Low-pressure casting and forging composite casting system with holding furnace exchange system

Abstract

The utility model discloses a low-pressure casting and forging composite casting system with a holding furnace exchange system. The low-pressure casting and forging composite casting system comprises a low-pressure casting and forging composite casting machine, a crucible type holding furnace group, a trolley transfer system and a transverse moving guide rail, the low-pressure casting and forging composite casting machine comprises a static template, a lower die is installed on the static template, an upper die is arranged above the lower die, the upper die is connected with a casting and forging module, and the lower die is provided with a liquid inlet used for being communicated with the crucible type heat preservation furnace set. The crucible type holding furnace group comprises at least two crucible type holding furnaces; the transverse moving guide rail and the low-pressure casting and forging composite casting machine are arranged in a matched mode, at least two mutually independent molten aluminum adding stations are arranged on the transverse moving guide rail, and the trolley transfer system moves on the transverse moving guide rail. The crucible type heat preservation furnace can be controlled by the trolley transfer system to move between the transverse moving guide rail and the low-pressure casting and forging composite casting machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-pressure casting, and particularly relates to a low-pressure casting and forging composite casting system with a holding furnace exchange system. Background Art

[0002] In the casting field of air pressure furnace feeding, whether it is a low-pressure machine, a differential pressure machine or a low-pressure casting and forging composite machine, the casting system mainly consists of a main machine, an aluminum liquid holding furnace and a control system. Among them, the aluminum liquid holding furnace generally adopts a double-chamber furnace made of low-moisture non-sticking aluminum casting material through one-time casting and sintering. This double-chamber furnace has two furnace cavities, one for pressurization and one for heat preservation, and there is a cut-off valve in the middle for isolation. During the casting process, the aluminum liquid holding furnace is located at the bottom of the machine. Through the riser pipe fixed in the aluminum liquid holding furnace, pressurization is carried out by the control system, so that the aluminum liquid in the holding furnace enters the mold cavity through the riser pipe for forming. After continuous production for a period of time, when the aluminum liquid in the holding furnace gradually decreases to the limit position at the bottom of the riser pipe, the cut-off valve needs to be opened at this time to put the aluminum liquid in the heat preservation chamber into the pressurization chamber, and then the cut-off valve is closed to replenish the aluminum liquid through the front furnace door of the holding furnace. This is repeated. The disadvantages of this double-chamber furnace are as follows:

[0003] 1. There is generally a certain distance between the bottom of the riser pipe and the inner bottom of the holding furnace, and the utilization rate of aluminum liquid is not high. The purpose is to prevent the aluminum slag deposited at the bottom from being sucked into the riser pipe to cause defective castings. This design results in the aluminum liquid at the bottom of the riser pipe that can never be used up. Over time, the alloy composition will change, and the old aluminum liquid will change the composition of the new aluminum liquid, thus affecting the quality of the castings.

[0004] 2. When the new aluminum liquid is poured into the holding furnace through the furnace door, it will form a scouring force, stirring up the aluminum slag and other substances originally deposited at the bottom of the holding furnace. The impurities will enter the castings along with the filling of the riser pipe, and it is easy to produce defective products.

[0005] 3. Due to long-term erosion in the aluminum water, the isolation cut-off valve of the double-chamber furnace sometimes adheres to sundries such as aluminum slag on the surface, resulting in the cut-off valve not closing tightly, causing the double-chamber to be connected and the pressurization pressure to get out of control, leading to unqualified castings and generating shutdown maintenance costs. Content of the Utility Model

[0006] In view of the above technical problems, the utility model discloses a low-pressure casting and forging composite casting system with a holding furnace exchange system, which improves the casting efficiency and use stability of the casting machine.

[0007] To achieve the above object, the technical solution adopted by the present utility model is as follows: A low-pressure casting and forging composite casting system with a heat-insulated furnace exchange system, comprising a low-pressure casting and forging composite casting machine, a crucible-type heat-insulated furnace group, a trolley transfer system, and a transverse movement guide rail; the low-pressure casting and forging composite casting machine includes a static template, a lower mold is installed on the static template, an upper mold is provided above the lower mold, the upper mold is connected to a casting and forging module, and the lower mold is provided with a liquid inlet for communicating with the crucible-type heat-insulated furnace group; the crucible-type heat-insulated furnace group includes at least two crucible-type heat-insulated furnaces; the transverse movement guide rail is provided in a supporting manner with the low-pressure casting and forging composite casting machine, and at least two independent aluminum liquid adding stations are provided on the transverse movement guide rail, and the trolley transfer system moves on the transverse movement guide rail; the crucible-type heat-insulated furnace can be controlled by the trolley transfer system to move between the transverse movement guide rail and the low-pressure casting and forging composite casting machine.

[0008] Further, it further includes a heat-insulated furnace lifting system, the heat-insulated furnace lifting system is arranged at the bottom of the low-pressure casting and forging composite casting machine, a crucible-type heat-insulated furnace installation position is provided on the heat-insulated furnace lifting system, and a lifting module is drivingly connected to the crucible-type heat-insulated furnace installation position. The crucible-type heat-insulated furnace is controlled by the heat-insulated furnace lifting system to rise or fall at the bottom of the low-pressure casting and forging composite casting machine.

[0009] Further, it further includes a control system, the control system is used to control the operation of the low-pressure casting and forging composite casting machine; the control system is arranged on one side of the low-pressure casting and forging composite casting machine away from the aluminum liquid adding station.

[0010] Further, the casting and forging module includes an oil cylinder installed on a moving template, the oil cylinder includes an extrusion piston rod, and the free end of the extrusion piston rod is connected to a sealing extrusion composite punch head; the sealing extrusion composite punch head includes an extrusion part and a sealing part; the upper mold is installed on the moving template, and the upper mold is provided with a through hole; the sealing extrusion composite punch head passes through the through hole, the size of the through hole is the same as the outer edge of the extrusion part, the outer edge of the sealing part is the same as the size of the liquid inlet, and the through hole is larger than the liquid inlet.

[0011] Further, the liquid inlet includes a lower mold opening and a mold gate sleeve installed at the lower mold opening.

[0012] Further, the upper mold and the moving template are detachably connected, and the sealing extrusion composite punch head and the extrusion piston rod are detachably connected.

[0013] The crucible-type heat-insulated furnace filled with aluminum liquid is transferred to the bottom of the low-pressure casting machine by the trolley transfer system, and the heat-insulated furnace lifting system is lifted to the working position.

[0014] When the aluminum liquid in the crucible-type heat-insulated furnace I is exhausted, the heat-insulated furnace lifting system descends, and the trolley transfer system transfers the crucible-type heat-insulated furnace I to the aluminum liquid adding station, then pushes the filled crucible-type heat-insulated furnace II into the low-pressure casting and forging composite casting machine, and the heat-insulated furnace lifting system is lifted to the working position, and the above work is repeated.

[0015] The utility model adopts a special working station and can interchangeably use a crucible-type holding furnace. On the one hand, when the crucible-type holding furnace is refilled with molten aluminum, impurities such as aluminum slag can be conveniently and thoroughly removed, ensuring the cleanliness of the molten aluminum, enabling the cast products to have high quality, and greatly improving the product quality. On the other hand, the alternative use of the crucible-type holding furnace eliminates the risk of pressure out-of-control caused by long-term use of the stop valve. Finally, the holding furnace exchange system can shorten the downtime for adding molten aluminum and other operations, improving the casting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure diagram of the low-pressure casting and forging composite casting system with a holding furnace exchange system according to an embodiment of the utility model.

[0017] Figure 2 The exchange action of the low-pressure casting and forging composite casting system with a holding furnace exchange system according to an embodiment of the utility model Figure 1 .

[0018] Figure 3 The exchange action of the low-pressure casting and forging composite casting system with a holding furnace exchange system according to an embodiment of the utility model Figure 2 .

[0019] Figure 4 The exchange action of the low-pressure casting and forging composite casting system with a holding furnace exchange system according to an embodiment of the utility model Figure 3 .

[0020] In the figure: 1 is a low-pressure casting and forging composite casting machine, 2 is crucible-type holding furnace I, 3 is crucible-type holding furnace II, 4 is a trolley transfer system, 5 is a holding furnace lifting system, 6 is a control system, 7 is molten aluminum adding station I, 8 is molten aluminum adding station II, and 9 is a transverse movement guide rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] For the convenience of understanding by those skilled in the art, the utility model will be further described below in conjunction with the embodiments and the drawings.

[0022] The low-pressure casting and forging composite casting system with a holding furnace exchange system in this embodiment includes a low-pressure casting and forging composite casting machine 1, a crucible-type holding furnace group (including crucible-type holding furnace I 2 and crucible-type holding furnace II 3), a trolley transfer system 4, a holding furnace lifting system 5, a control system 6, and a transverse movement guide rail 9;

[0023] The low-pressure casting and forging composite casting machine includes a static template, a lower mold is installed on the static template, an upper mold is provided above the lower mold, the upper mold is connected with a casting and forging module, and the lower mold is provided with a liquid inlet for communicating with the crucible-type holding furnace group; the crucible-type holding furnace group includes at least two crucible-type holding furnaces.

[0024] The crucible-type holding furnace I 2 or the crucible-type holding furnace II 3 can be lifted up and down in the low-pressure casting machine 1 by the holding furnace lifting system 5 as required. For example, Figure 1 As shown, the holding furnace lifting system is arranged at the bottom of the low-pressure casting and forging compound casting machine. The holding furnace lifting system is provided with a mounting position for the crucible-type holding furnace and a lifting module drivingly connected to the mounting position of the crucible-type holding furnace. The control system is used to control the operation of the low-pressure casting and forging compound casting machine; the crucible-type holding furnace I 2 is arranged on one side of the low-pressure casting and forging compound casting machine 1, and the control system 6 is arranged on the other side.

[0025] For example, Figure 2 As shown, a transverse movement guide rail 9 is arranged in front of the low-pressure casting and forging compound casting machine 1. The transverse movement guide rail 9 is provided with an independent molten aluminum adding station I 7 and a molten aluminum adding station II 8. The trolley transfer system 4 moves on the transverse movement guide rail 9. The crucible-type holding furnace I 2 and the crucible-type holding furnace II 3 can be controlled by the trolley transfer system to move between the transverse movement guide rail and the low-pressure casting and forging compound casting machine to achieve exchange.

[0026] The casting and forging module includes an oil cylinder installed on the moving template. The oil cylinder includes an extrusion piston rod, and the free end of the extrusion piston rod is connected to a sealing extrusion composite punch head; the sealing extrusion composite punch head includes an extrusion part and a sealing part; the upper die is installed on the moving template, and the upper die is provided with a through hole; the sealing extrusion composite punch head passes through the through hole, the size of the through hole is the same as the outer edge of the extrusion part, the outer edge of the sealing part is the same as the size of the liquid inlet, and the through hole is larger than the liquid inlet. The liquid inlet includes a lower die opening and a mold gate sleeve installed at the lower die opening. The upper die and the moving template are detachably connected, and the sealing extrusion composite punch head and the extrusion piston rod are detachably connected.

[0027] The crucible-type holding furnace I 2 filled with molten aluminum is transported by the trolley transfer system 4 to the bottom of the low-pressure casting machine 1, and the holding furnace lifting system 5 is lifted to the working position. The control system 6 then controls the low-pressure casting machine 1 to perform continuous casting operations.

[0028] For example, Figure 2-4 As shown, when the molten aluminum in the crucible-type holding furnace I 2 is exhausted, the control system 6 issues an instruction, the holding furnace lifting system 5 descends, and the trolley transfer system 4 horizontally moves the crucible-type holding furnace I 2 along the transverse movement guide rail 9 to the molten aluminum adding station II 8, and then pushes the crucible-type holding furnace II 3 filled with molten aluminum from the molten aluminum adding station I 7 into the low-pressure casting machine 1, and the holding furnace lifting system 5 is lifted to the working position. When the molten aluminum in the crucible-type holding furnace II 3 is exhausted, the above work is repeated.

[0029] The above embodiments are only used to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the present invention.

Claims

1. A low-pressure casting and forging composite casting system with a heat preservation furnace exchange system, characterized in that: It includes a low-pressure casting and forging composite casting machine, a crucible-type holding furnace group, a trolley transfer system, and a transverse movement guide rail; The low-pressure casting and forging composite casting machine includes a static template, a lower mold is installed on the static template, an upper mold is arranged above the lower mold, the upper mold is connected with a casting and forging module, and the lower mold is provided with a liquid inlet for communicating with the crucible-type holding furnace group; The crucible-type holding furnace group includes at least two crucible-type holding furnaces; The transverse movement guide rail is arranged in a supporting manner with the low-pressure casting and forging composite casting machine, at least two independent aluminum liquid adding stations are arranged on the transverse movement guide rail, and the trolley transfer system moves on the transverse movement guide rail; the crucible-type holding furnace can be controlled by the trolley transfer system to move between the transverse movement guide rail and the low-pressure casting and forging composite casting machine.

2. The low-pressure casting and forging composite casting system with a holding furnace exchange system according to claim 1, characterized in that: It further includes a holding furnace lifting system, the holding furnace lifting system is arranged at the bottom of the low-pressure casting and forging composite casting machine, a crucible-type holding furnace installation position is arranged on the holding furnace lifting system, and a lifting module is drivingly connected with the crucible-type holding furnace installation position.

3. The low-pressure casting and forging composite casting system with a holding furnace exchange system according to claim 1, characterized in that: It further includes a control system, the control system is used to control the operation of the low-pressure casting and forging composite casting machine; the control system is arranged on the side of the low-pressure casting and forging composite casting machine away from the aluminum liquid adding station.

4. The low-pressure casting and forging composite casting system with a holding furnace exchange system according to claim 1, characterized in that: The casting and forging module includes an oil cylinder installed on a moving template, the oil cylinder includes an extrusion piston rod, and the free end of the extrusion piston rod is connected with a sealing and extrusion composite punch head; the sealing and extrusion composite punch head includes an extrusion part and a sealing part; The upper mold is installed on the moving template, and the upper mold is provided with a through hole; the sealing and extrusion composite punch head passes through the through hole, the size of the through hole is the same as the outer edge of the extrusion part, the outer edge of the sealing part is the same as the size of the liquid inlet, and the through hole is larger than the liquid inlet.

5. The low-pressure casting and forging composite casting system with a holding furnace exchange system according to claim 4, characterized in that: The liquid inlet includes a lower mold opening and a mold gate sleeve installed at the lower mold opening.

6. The low-pressure casting and forging composite casting system with a holding furnace exchange system according to claim 4, characterized in that: The upper mold and the moving template are detachably connected, and the sealing and extrusion composite punch head and the extrusion piston rod are detachably connected.

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