CN214185212U - Casting ladle device - Google Patents

Abstract

The utility model discloses a casting is watered a packet device, including one and water the package, the bottom of watering the package is equipped with the pouring pipe, the top of watering the package is sealed by the closing plate, is connected with evacuation pipe and forcing pipe on the closing plate, be equipped with the bleeder valve on the evacuation pipe, be equipped with the admission valve on the forcing pipe, still include a motion, motion can be connected with watering the package to can drive and water the package and realize multidirectional motion. The utility model can control the air pressure in the sealed casting ladle, and conveniently switch different casting modes such as negative pressure casting, gravity casting, low pressure casting and the like; the casting tube following technology and the casting speed control technology can be adopted, the temperature gradient problem in the casting production process is effectively solved, the states of lowest temperature, solidification at first and best performance of the key surface of the casting are ensured, and a perfect solution is provided for improving the mechanical performance and the internal quality of the casting.

Description

Casting ladle device

Technical Field

The utility model relates to a metal casting equipment especially relates to a casting is watered a packet device.

Background

With the development of the automobile industry, higher requirements are also put forward on indexes of environmental protection emission, oil consumption and the like of automobiles. Because the engine has great influence on the performance of the automobile, the requirements on the integration level and the mechanical performance of the engine cylinder cover are further improved, the casting requirement of the aluminum alloy cylinder cover is higher and higher, the design requirement on the temperature field of the mold is higher and higher, the mold is more and more complex, and even the condition that the design of the mold cannot meet the product performance requirement appears. Meanwhile, the phenomenon of carelessness occurs in the new requirements of the traditional aluminum alloy cylinder cover casting mode, namely gravity casting and low-pressure casting on the cylinder cover parts, the phenomenon is particularly remarkable in SDAS (secondary dendrite arm spacing), and the SDAS is larger on the combustion chamber surface of the cylinder cover due to the gravity casting and low-pressure casting modes and always loiters at the qualified edge. The higher SDAS indicates that the dendrite of the cylinder head is larger, which causes the problem of lower mechanical performance of the product. The cylinder cover produced by the gravity casting and the low-pressure casting has respective advantages, but inherent defects which cannot be solved exist, such as the problem of inverse hanging of the solidification temperature field of the gravity bottom casting and the low-pressure casting, and the feeding effect of the casting is greatly influenced.

SUMMERY OF THE UTILITY MODEL

To prior art's weak point, the utility model provides a casting is watered a packet device can solve the problem that the temperature gradient hangs upside down in the casting solidification process to can fill type speed, realize different casting modes as required control.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a casting is watered a packet of device, includes one and waters the package, waters the bottom of package and is equipped with the pouring pipe, the top of watering the package is sealed by the closing plate, is connected with evacuation pipe and forcing pipe on the closing plate, be equipped with the bleeder valve on the evacuation pipe, be equipped with the admission valve on the forcing pipe, still include a motion, the motion can be connected with watering the package to can drive and water the package and realize multidirectional motion.

Preferably, the pouring tube is a single tube, and the moving mechanism can drive the casting ladle and the pouring tube to rotate around the axis of the pouring tube together.

Preferably, the pouring tube has a plurality of pouring tubes, the axes of the pouring tubes are parallel to each other, and the pouring tubes can be synchronously inclined under the driving of the moving mechanism.

Preferably, the movement mechanism comprises an automatic control system, and the air suction valve and the air inlet valve are also connected with the automatic control system.

Preferably, the movement mechanism is a casting robot.

Preferably, a quick-change device which can be connected with an arm of a casting robot is fixed on the sealing plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses the casting is watered a packet device and has been adopted sealed to having set up evacuation pipe and forcing pipe, can controlling the atmospheric pressure in the sealed packet of watering, conveniently switching different casting methods such as negative pressure casting, gravity casting and low pressure casting.

2. During the pouring process, the opening of the air inlet valve can be adjusted in real time according to the sectional area of the casting in the height direction, so that the molten metal mold filling speed can be adjusted in real time.

3. The weight of the molten metal sucked into the ladle can be accurately controlled by adopting a vacuum material taking mode.

4. The pouring tube following technology and the pouring speed control technology can effectively solve the problem of temperature gradient in the production process of castings, ensure the states of lowest temperature, the first solidification and the best performance of key surfaces of the castings, and provide a perfect solution for the improvement of the mechanical performance and the internal quality of the castings.

Drawings

Fig. 1 is a schematic view of a casting ladle apparatus according to the present invention.

Figure 2 is a schematic view of another casting ladle apparatus according to the present invention.

Figure 3 is a cross-sectional view of the casting ladle apparatus of figure 2 according to the present invention.

FIG. 4 is a schematic view of a casting ladle apparatus according to the present invention sucking molten metal.

Fig. 5 is a schematic view of a casting ladle apparatus according to the present invention during casting.

In the figure:

1. casting ladle 2, casting pipe 3 and pressurizing pipe

4. Quick change device 5, closing plate 6, vacuum tube

7. Molten metal 8, mold 9, liquid level probe

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 and 2, the casting ladle device of the present invention comprises a ladle 1, wherein a pouring tube 2 is arranged at the bottom of the ladle 1, and as shown in fig. 1, the pouring tube 2 may be a single tube; preferably, as shown in fig. 2 and 3, the pouring tube 2 has a plurality of tubes, and the axes thereof are parallel to each other. The top of the casting ladle 1 is sealed by a sealing plate 5, the sealing plate 5 is connected with an evacuating pipe 6 and a pressurizing pipe 3, and the evacuating pipe 6 is provided with an evacuating valve (not shown in the figure) for controlling the on-off of the evacuating pipe 6; an intake valve (not shown) is provided in the pressurizing pipe 3 to control the opening/closing of the pressurizing pipe 3 and the flow rate of intake air.

The utility model discloses in still include a motion (not shown in the figure), this motion can be connected with casting ladle 1, and can drive casting ladle 1 and realize multidirectional motion, for example, along horizontal direction translation and along vertical direction lift, in addition, because the discharge gate of pouring tube 2 lower extreme probably opens in the side, when pouring tube 2 is single, in the pouring process, the motion can also drive casting ladle 1 and pouring tube 2 and revolve 360 degrees rotations around the axis of pouring tube 2 together, make the ejection of compact of each direction more even; when a plurality of pouring pipes 2 are arranged, the moving mechanism can also drive the pouring ladle 1 and the pouring pipe 2 to swing or incline around a horizontal shaft together in the pouring process so as to ensure that the discharging in all directions is more uniform. There are many known moving mechanisms that can perform the function of moving the ladle 1 in multiple directions, but it is preferable that a robot arm is used to connect the ladle 1, for example, a known casting robot, and a quick-change device 4 that can be connected to the casting robot is provided on the sealing plate 5, and the quick-change device 4 is also a known structure that can be quickly connected to or disconnected from the arm of the casting robot.

Preferably, the motion mechanism comprises an automatic control system, the motion track of the motion mechanism can be controlled, and the air suction valve and the air inlet valve are also connected with the automatic control system, and the opening, closing or opening of the air suction valve and the air inlet valve is controlled by the automatic control system.

The following explains a casting method implemented by the casting ladle device of the present invention, the casting method comprising the steps of:

A. connecting a motion mechanism (such as a casting robot) with a casting ladle, moving the casting ladle to the upper part of a molten metal holding furnace to lower the casting ladle, and inserting the lower end of a casting pipe into the molten metal;

B. as shown in fig. 4, the intake valve is closed, the pressurizing pipe 3 is closed, the suction valve is opened, the ladle 1 is evacuated by the vacuum tube 6, and the molten metal 7 is sucked into the ladle 1 from the pouring pipe 2; the weight of the molten metal 7 sucked into the ladle 1 can be accurately controlled by controlling the degree of vacuum in the ladle 1. Of course, the weight of the sucked-in molten metal 7 can also be checked by the level probe 9 or the weight sensor.

C. After the molten metal in the ladle 1 reaches a desired fixed amount, the degree of vacuum in the ladle is maintained as shown in fig. 5, and the molten metal is prevented from leaking out of the pour tube 2. The moving mechanism moves the casting ladle 1 to the position above the casting mold 8, and then the casting ladle 1 is lowered until the lower end of the casting pipe 2 reaches the bottom of the cavity of the mold 8;

D. then closing the air extraction valve, opening the air inlet valve, inflating the casting ladle 1 through the pressurizing pipe 3, and injecting the molten metal into the cavity of the mold 8 through the casting pipe 2 due to the rising of the air pressure in the casting ladle 1; the opening of the air inlet valve is controlled, so that the air pressure in the casting ladle 1 is smaller than the atmospheric pressure, negative pressure casting is realized, the mold filling speed is low, and the mold filling process is stable; the air pressure in the casting ladle 1 can be equal to the atmospheric pressure, gravity casting is realized, the mold filling speed is high, and the mold cavity with a complex shape is easy to fill; or the air pressure in the casting ladle 1 can be larger than the atmospheric pressure, the mold filling speed is the fastest, the molding capacity is good for the shape which is difficult to fill, and the low-pressure casting is realized. And the three casting modes can be switched at any time in one casting process to form a mixed casting mode.

E. Along with the rise of the liquid level in the cavity of the mold 8, the moving mechanism drives the casting ladle 1 to rise correspondingly, so that the outlet at the lower end of the casting pipe 2 is ensured to be always kept above the liquid level in the cavity of the mold, the temperature gradient of the molten metal in the cavity is ensured to be in a required low-low high-high state until the riser part of the final mold filling casting is reached, and the casting and mold filling process is finished. During the pouring process, the opening of the air inlet valve can be adjusted in real time by the automatic control system according to the sectional area of the casting in the height direction, so that the molten metal mold filling speed can be adjusted in real time.

The utility model discloses can control the switching of evacuation pipe 6 and forcing pipe 3, switch at any time, the pressure of watering in 1 can carry out real time control through automatic control system according to the pressure curve of predetermineeing, consequently can reach the switching at any time of three kinds of pouring modes. The switching is preset according to the sectional area of the casting in the height direction, so that the mold filling process is controlled, and the mold filling speed is easy to adjust.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a casting is watered a ladle and is put, includes one and waters the package, waters the bottom of package and is equipped with the pouring tube, its characterized in that, the top of watering the package is sealed by the closing plate, is connected with evacuation pipe and forcing pipe on the closing plate, be equipped with the bleeder valve on the evacuation pipe, be equipped with the admission valve on the forcing pipe, still include a motion, the motion can be connected with watering the package to can drive and water the package and realize multidirectional motion.

2. The casting ladle apparatus of claim 1, wherein the pour tube is a single piece and the movement mechanism rotates the ladle and the pour tube together about the axis of the pour tube.

3. A casting ladle apparatus according to claim 1, wherein the pouring tube has a plurality of tubes whose axes are parallel to each other and which can be tilted synchronously by the moving mechanism.

4. A casting ladle apparatus according to claim 1, wherein the movement mechanism comprises an automatic control system to which the suction and intake valves are also connected.

5. A casting ladle apparatus according to claim 1, wherein the movement mechanism is a casting robot.

6. A casting ladle apparatus according to claim 5, wherein a quick-change device connectable to an arm of a casting robot is fixed to the sealing plate.

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