Injection molding device for machine tool casting

Abstract

The utility model relates to the technical field of casting, in particular to an injection molding device for machine tool castings, which comprises a casting sand box, a cooling barrel, a pouring cup, a cooling component, a water tank, a recycling box, a water level sensor and a supporting block, the inner wall of the cooling barrel is connected with the pouring cup; the cooling assembly is connected to the periphery of the cooling barrel; the cooling assembly comprises a cooling shell, a gap is reserved between the inner wall of the cooling shell and the periphery of the cooling barrel to form a cooling liquid chamber, the upper portion of the cooling liquid chamber is connected with a cooling liquid injection pipe, and the lower portion is connected with a cooling liquid discharge pipe which is movably and hermetically connected with the cover. And the water tank is connected to one side of the casting sand box. The injection molding device for the machine tool casting further meets the requirements of high-temperature discharging and low-temperature pouring of the pouring process, reduces the gas solubility and liquid shrinkage in a metal solution and baking of high-temperature metal on the surface of a cavity, avoids the defects of sand sticking, shrinkage cavities and the like, and improves the using effect of the injection molding device for the machine tool casting.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and in particular to an injection molding device for machine tool castings. Background Technology

[0002] Machine tools are an indispensable production factor and equipment in the era of mechanized mass production. Machine tools are composed of various parts, a large part of which come from the casting industry. These castings play an important role in the production of machine tools.

[0003] Chinese Patent No. CN210305671U discloses an injection molding device for machine tool castings. The bottom of the pouring cup is fixedly connected to a first sprue, the bottom of which is fixedly connected to the middle of a passageway. Second sprues are fixedly connected to both sides of the passageway, and a horizontal sprue is fixedly connected to one side of each second sprue. One end of the horizontal sprue is fixedly fitted onto both sides of the casting sand box. Cooling tanks are fixedly fitted onto both sides of the first sprue. This invention utilizes the coordination of a water tank, a recovery water tank, a water pump, and cooling tanks to circulate cold water within these four devices. When the molten metal passes through the first sprue, the cold water flowing in the cooling tanks cools the molten metal, thereby meeting the requirements of "high-temperature furnace exit, low-temperature casting" in the casting process. This reduces the solubility of gases in the molten metal, the amount of liquid shrinkage, and the baking effect of the high-temperature metal on the mold cavity surface, preventing defects such as sand adhesion and shrinkage cavities.

[0004] In existing injection molding devices for machine tool castings, the cooling tank is connected to the pouring cup and pouring pipe, which makes the temperature of the cold water inside the cooling tank higher than that in the water tank and the recovery water tank. The cooling tank has a single function, is not convenient for temperature adjustment, reduces its practicality, and when the temperature is too high, it can cause damage to the casting sand mold, sand shedding, and problems such as sand adhesion and shrinkage cavities. Utility Model Content

[0005] To address the problems existing in the background technology, an injection molding device for machine tool castings is proposed.

[0006] This utility model proposes an injection molding device for machine tool castings, including: a casting sand box, a cooling barrel, a pouring cup, a cooling component, a water tank, a recycling box, a water level sensor, and a support block;

[0007] The casting sand box is connected to a cooling tank, and the inner wall of the cooling tank is connected to a pouring cup.

[0008] A cooling component is connected to the outside of the cooling barrel. The cooling component includes a cooling shell, and a gap is left between the inner wall of the cooling shell and the outside of the cooling barrel to form a coolant chamber. A coolant injection pipe is connected above the coolant chamber and a coolant discharge pipe is connected below it. The coolant discharge pipe is movably and sealingly connected to the cover.

[0009] And the water tank is connected to one side of the casting sand box.

[0010] Preferably, the pouring cup is connected to the sprue a, both sides of the sprue a are connected to passageways, the passageways are connected to the sprue b, and the sprue b is connected to three horizontal runners, all of which are connected to the casting sand box.

[0011] Preferably, the water tank is connected to a water injection pipe and a water pump is connected above it. The water pump has a pipe body connected to its inlet end and a delivery pipe connected to its outlet end. The outlet end of the delivery pipe passes through the coolant chamber and the cooling tank.

[0012] Preferably, the water tank is connected to the recycling bin via an interconnecting pipe, and the recycling bin is connected to the drain pipe;

[0013] The recycling bin is connected to a connecting pipe, and the water outlet of the connecting pipe passes through the coolant chamber and the cooling tank.

[0014] Preferably, the water tank is connected to a water level sensor, and three water level sensors are provided, with the other two water level sensors connected to the coolant chamber and the recovery tank, respectively.

[0015] Preferably, support blocks are connected to both sides above the pouring cup, each support block is connected to a support rod, the support rod is connected to a bracket, and the two brackets are respectively connected to the outer walls of the water tank and the recycling tank;

[0016] The support block connects to the filter element.

[0017] Preferably, the filter element includes a vertical block connected to the support block, the vertical block is connected to filter screen a, connecting plates are connected to the lower two sides of filter screen a, the connecting plates are connected to filter screen b, and filter screen b and filter screen a are movably connected to the inner wall of the pouring cup.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] This invention connects the outer perimeter of the cooling barrel to the cooling shell, creating a coolant chamber between the interior of the cooling shell and the outer perimeter of the cooling barrel. Coolant is introduced into the coolant chamber through a coolant injection pipe, achieving temperature reduction of the cooling barrel. During the casting and pouring process of molten metal, this design prevents the cold water inside the cooling barrel from being affected by the high temperature of the molten metal, thus avoiding temperature rise. It facilitates the use of coolant to assist the cooling barrel in cooling the molten metal, further meeting the requirements of "high-temperature furnace exit, low-temperature pouring" in the casting process. This reduces the solubility of gases in the molten metal, the amount of liquid shrinkage, and the baking of the mold cavity surface by the high-temperature metal, preventing defects such as sand adhesion and shrinkage cavities, and improving the functionality of the cooling barrel. At the same time, filter screens a and b are detachably connected to the pouring cup, facilitating the disassembly and cleaning of the filter components and improving the practicality of the injection molding device for machine tool castings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the cooling shell structure in this utility model;

[0022] Figure 3 This is a schematic diagram of the filter element structure in this utility model.

[0023] Reference numerals in the attached drawings: 1. Casting sand box; 2. Cooling tank; 3. Pour cup; 301. Sprue a; 302. Passageway; 303. Horizontal sprue; 4. Cooling assembly; 401. Cooling shell; 402. Coolant injection pipe; 403. Coolant discharge pipe; 404. Cover; 5. Water tank; 501. Water injection pipe; 502. Water pump; 503. Pipe body; 504. Conveying pipe; 6. Recovery box; 601. Drainage pipe; 602. Connecting pipe; 7. Water level sensor; 8. Support block; 801. Support rod; 802. Bracket; 803. Vertical block; 804. Filter screen a; 805. Connecting plate; 806. Filter screen b. Detailed Implementation

[0024] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0025] Example 1

[0026] like Figure 1 - Figure 3 As shown, this utility model proposes an injection molding device for machine tool castings, comprising: a casting sand box 1, a cooling tank 2, a pouring cup 3, a cooling component 4, a water tank 5, a recovery tank 6, a water level sensor 7, and a support block 8; the casting sand box 1 is connected to the cooling tank 2, and the pouring cup 3 is connected to the inner wall of the cooling tank 2; the cooling component 4 is connected to the outer periphery of the cooling tank 2; the cooling component 4 includes a cooling shell 401, the inner wall of the cooling shell 401 and the outer periphery of the cooling tank 2 are spaced to form a coolant chamber, a coolant injection pipe 402 is connected above the coolant chamber and a coolant discharge pipe 403 is connected below the coolant chamber, and the coolant discharge pipe 403 is movably and sealingly connected to a cover 404; the water tank 5 is connected to one side of the casting sand box 1. The cooling component 4 facilitates the use of the cooling tank 2 to cool the molten metal, and during the casting and injection process of the molten metal, it avoids the cold water in the cooling tank 2 from being affected by the high temperature of the molten metal, thus preventing the temperature from rising, and facilitates the use of coolant to assist the cooling tank 2 in cooling the molten metal.

[0027] To further explain, water tank 5 is connected to water level sensors 7, and there are three water level sensors 7. The other two water level sensors 7 are connected to the coolant chamber and the recovery tank 6, respectively. The water level sensors 7 facilitate the monitoring of the water level in water tank 5, recovery tank 6, and coolant chamber, ensuring that there is enough cold water in water tank 5 and recovery tank 6 to supply the cooling tank 2. They also facilitate increasing the coolant level in the coolant chamber, which is beneficial for the overall operation of the injection molding device for machine tool castings.

[0028] To further explain, support blocks 8 are connected to both sides above the pouring cup 3. Each support block 8 is connected to a support rod 801, which in turn is connected to a bracket 802. The two brackets 802 are respectively connected to the outer walls of the water tank 5 and the recovery tank 6. The support blocks 8 are connected to the filter element. By using bolts to connect the support blocks 8 and the support rods 801, the support rods 801 support and connect the filter element inside the pouring cup 3, facilitating the disassembly and cleaning of the filter element according to usage needs, thus improving the practicality of the filter element.

[0029] To further explain, the filter element includes a vertical block 803 connected to the support block 8. The vertical block 803 is connected to a filter screen a804. Connecting plates 805 are connected to both sides below the filter screen a804. The connecting plates 805 are connected to a filter screen b806, and the filter screen b806 and the filter screen a804 are movably connected to the inner wall of the pouring cup 3. When the molten metal is poured into the pouring cup 3, non-metallic impurities in the molten metal are first filtered through the filter screens a804 and b806 to prevent smaller non-metallic impurities from being trapped in the casting, thereby further preventing local deformation and cracking of the casting.

[0030] Example 2

[0031] like Figure 1 As shown, this utility model proposes an injection molding device for machine tool castings. Based on the above embodiments, this embodiment also details the specific components of the pouring cup 3, water tank 5, and recycling tank 6, as well as their arrangement.

[0032] To further explain, the pouring cup 3 is connected to the sprue a301. Both sides of the sprue a301 are connected to runners 302, which in turn connect to sprue b. Each sprue b is connected to three runners 303, which are all connected to the casting sand box 1. When the molten metal is poured into the pouring cup 3, it is filtered by the filter and flows into the sprue a301. Then, through the runners 302, it is divided into two parts, flowing into the sprue b and the two runners 303 respectively. Finally, it flows into the casting sand box 1 through the runners 303 for casting.

[0033] To further explain, water tank 5 is connected to water injection pipe 501 and water pump 502 is connected above it. The inlet end of water pump 502 is connected to pipe body 503, and the outlet end is connected to delivery pipe 504. The outlet end of delivery pipe 504 passes through the coolant chamber and connects to cooling tank 2. Cold water is injected into water tank 5 through water injection pipe 501. Water pump 502 is started. Cold air in water tank 5 flows into cooling tank 2 through pipe body 503, water pump 502 and delivery pipe 504. Cooling tank 2 cools the molten metal to meet the requirements of "high temperature tapping and low temperature casting" in the casting process. This reduces the solubility of gas in the molten metal, the amount of liquid shrinkage, and the baking of the cavity surface by the high temperature metal, avoiding defects such as sand adhesion and shrinkage cavities.

[0034] To further explain, water tank 5 is connected to recovery tank 6 via an interconnecting pipe, and recovery tank 6 is connected to drain pipe 601. Recovery tank 6 is also connected to connecting pipe 602, the outlet of which passes through the coolant chamber and connects to cooling tank 2. Water tank 5 and recovery tank 6 are connected via an interconnecting pipe, and recovery tank 6 and water tank 5 have identical structures. Furthermore, the interconnecting pipe is parallel to the bottom surfaces of water tank 5 and recovery tank 6. Water flows through the interconnecting pipe, and under the action of water pump 502, water tank 5 and recovery tank 6 move back and forth, achieving circulating cooling and facilitating more efficient cooling of molten metal.

[0035] The working principle of this utility model is as follows: When the injection molding device is in use, coolant is injected into the coolant chamber through the coolant injection pipe 402. The coolant chamber is connected to the outside of the cooling tank 2, so that the coolant chamber cools the cooling tank 2. During the process of the molten metal flowing through the pouring cup 3, the sprue a301 and the channel 302, the temperature of the molten metal coming out of the furnace is high. The temperature of the cold water in the cooling tank 2 changes through the pouring cup 3 and the sprue a301, and then the cooling tank 2 is cooled through the coolant chamber. This conveniently improves the requirement of "high temperature furnace exit, low temperature casting" in the casting process. At the same time, it avoids the cold water in the cooling tank 2 from changing due to heating and circulates in the water tank 5 and the recovery tank 6, which conveniently improves the use of the injection molding device for machine tool castings.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An injection molding device for machine tool castings, characterized in that, include: Casting sand box (1); the casting sand box (1) is connected to the cooling barrel (2), and the inner wall of the cooling barrel (2) is connected to the pouring cup (3); Cooling component (4) is connected to the periphery of cooling barrel (2); cooling component (4) includes cooling shell (401), the inner wall of cooling shell (401) and the periphery of cooling barrel (2) are separated to form a coolant chamber, a coolant injection pipe (402) is connected above the coolant chamber and a coolant discharge pipe (403) is connected below the coolant chamber, and the coolant discharge pipe (403) is movably and sealingly connected to cover (404); And a water tank (5), which is connected to one side of the casting sand box (1).

2. The injection molding device for machine tool castings according to claim 1, characterized in that, The pouring cup (3) is connected to the sprue a (301). Both sides of the sprue a (301) are connected to the passageway (302). The passageway (302) is connected to the sprue b. The sprue b is connected to three runners (303). The three runners (303) are connected to the casting sand box (1).

3. The injection molding device for machine tool castings according to claim 1, characterized in that, The water tank (5) is connected to the water injection pipe (501) and the water pump (502) is connected above it. The water pump (502) has a pipe body (503) connected to the water inlet end and a delivery pipe (504) connected to the water outlet end. The water outlet end of the delivery pipe (504) passes through the coolant chamber and the cooling tank (2) and is connected.

4. The injection molding device for machine tool castings according to claim 3, characterized in that, The water tank (5) is connected to the recycling tank (6) via an interconnecting pipe, and the recycling tank (6) is connected to the drain pipe (601); The recycling bin (6) is connected to a connecting pipe (602), and the water outlet of the connecting pipe (602) passes through the coolant chamber and the cooling tank (2).

5. The injection molding device for machine tool castings according to claim 4, characterized in that, The water tank (5) is connected to a water level sensor (7), and there are three water level sensors (7). The other two water level sensors (7) are connected to the coolant chamber and the recovery tank (6) respectively.

6. The injection molding device for machine tool castings according to claim 5, characterized in that, Support blocks (8) are connected to the upper sides of the pouring cup (3). The support blocks (8) are connected to the support rods (801). The support rods (801) are connected to the brackets (802). The two brackets (802) are respectively connected to the outer walls of the water tank (5) and the recycling tank (6). The support block (8) connects to the filter element.

7. The injection molding device for machine tool castings according to claim 6, characterized in that, The filter element includes a vertical block (803) connected to the support block (8), the vertical block (803) is connected to the filter screen a (804), the filter screen a (804) is connected to the two sides below the filter screen a (804) and the connecting plate (805) is connected to the filter screen b (806), and the filter screen b (806) and the filter screen a (804) are movably connected to the inner wall of the pouring cup (3).

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