Multifunctional casting machine

Abstract

The invention provides a multifunctional casting machine. The multifunctional casting machine comprises a smelting furnace capable of injecting molten metal into a mold through a pressure injection opening under the pressure effect. The manipulator is used for closing a mold of which the side surface is provided with a sprue gate and driving the mold to move so as to enable the sprue gate to be close to or far away from the pressure injection port; the pressure injection port is arranged on the side of the smelting furnace along the horizontal line; the manipulator is arranged on the base, and a first driver is arranged on the base and can drive the manipulator to rotate along the axis of the pressure injection opening. When pressure casting is achieved, the mechanical arm can be driven by the first driver to rotate along the axis of the pressure injection opening so that the mold can be turned over along the axis, in this way, the mold cavity cooled firstly can be turned over to the bottom, feeding is achieved through the gravity of molten metal, and in this way, dual feeding of pressure maintaining and force increasing can be achieved; the problem of looseness of the interior and the outer surface of the part is greatly reduced; and the structure is simple and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of casting devices, and more particularly, to a multi-functional casting machine. Background Art

[0002] A die casting machine is a device used to quickly inject molten metal into a mold under pressure to produce high-precision castings. Its casting process usually involves first injecting the molten metal under pressure into the cavity of the mold, then holding the pressure, cooling, and finally releasing the pressure to open the mold and remove the part.

[0003] During the die casting process, the solidification characteristic of the casting is that it starts to cool from the outside and the side far from the pouring gate first. Therefore, shrinkage porosity may occur on the inside and the surface of the side far from the pouring gate. Currently, the problem of part shrinkage porosity is usually avoided by applying pressure and holding the pressure. However, this method not only requires a higher-pressure pressurizing device but also requires the mold to have higher precision and tightness, greatly increasing the cost. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a multi-functional casting machine to solve the above problems.

[0005] The present invention adopts the following solutions:

[0006] The present application provides a multi-functional casting machine, including a melting furnace that can inject molten metal into a mold through a pouring port under pressure; and a manipulator that can close a mold with a pouring port on the side and drive the mold to move so that the pouring port approaches or moves away from the pouring port. An injection channel is inclined inside the melting furnace, and the injection channel penetrates the upper side of the melting furnace to form the pouring port; the manipulator is arranged on a base; a first drive is arranged on the base, which can drive the manipulator to rotate along the axis of the pouring port, thereby adjusting the flow of molten metal in the mold cavity under the action of gravity.

[0007] Further, the manipulator includes a first manipulator and a second manipulator with a first fixture and a second fixture respectively arranged at the ends; a second drive is arranged on the base for driving the first manipulator and the second manipulator to approach or move away from each other.

[0008] Further, the first fixture and the second fixture are respectively rotatably arranged at the ends of the first manipulator and the second manipulator; third drives are respectively arranged on the first manipulator and the second manipulator for driving the fixture to flip.

[0009] Further, a fourth drive is provided on the base for driving the manipulator to move in the vertical direction; a fifth drive is further provided on the frame of the manipulator for driving the manipulator to flip.

[0010] Further, the injection port on the upper side of the injection channel protrudes outward with an injection boss.

[0011] Further, a plurality of the injection channels are arranged in parallel along the horizontal direction inside the melting furnace; one or more pouring ports adapted to the injection ports of the injection channels can be provided on the mold. When there is one injection port on the mold, it can rotate along the axis of the injection port driven by the first drive, and the injection ports of the other injection channels are blocked by plugs.

[0012] Further, the mold performs horizontal or vertical parting on the product according to the characteristics of the product.

[0013] Further, another injection port is provided directly above the melting furnace.

[0014] Further, the base is rotatably arranged on the pedestal; the pedestal is connected to the mounting seat or is suspended and hoisted through a hanging pedestal.

[0015] Further, a plurality of the manipulators are provided on the base.

[0016] By adopting the above technical solutions, the following technical effects can be achieved by the present invention:

[0017] The present invention provides a multi-functional casting machine, which is provided with a melting furnace capable of injecting molten metal into a mold through an injection port under pressure to realize pressure casting; at the same time, its manipulator can rotate along the axis of the injection port driven by the first drive to realize the flipping of the mold along the axis, so that the previously cooled cavity can be flipped to the bottom to realize feeding by the gravity of the molten metal itself. This method can realize double feeding of pressure holding and gravity, greatly reducing the problems of shrinkage inside and on the outer surface of the part; and its structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a front structural schematic diagram of a multi-functional casting machine according to an embodiment of the present invention;

[0020] Figure 2 It is a top structural schematic diagram of a multi-functional casting machine according to an embodiment of the present invention;

[0021] Figure 3 It is a partial structural schematic diagram when the pouring port of the mold of a multi-functional casting machine according to an embodiment of the present invention abuts against the injection port of the melting furnace;

[0022] Figure 4 is Figure 3 The structural schematic diagram after the mold is flipped 180 degrees;

[0023] Figure 5 It is a structural schematic diagram when the mold of a multi-functional casting machine according to an embodiment of the present invention is at the loading and unloading station;

[0024] Figure 6 It is a structural schematic diagram of the melting furnace part according to another embodiment of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a multi-functional casting machine according to another embodiment of the present invention;

[0026] Figure 8 It is a top structural schematic diagram of a multi-functional casting machine according to yet another embodiment of the present invention;

[0027] Figure 9 It is a front structural schematic diagram of a multi-functional casting machine according to yet another embodiment of the present invention;

[0028] Figure 10 It is a top structural schematic diagram of a multi-functional casting machine adopting a hoisting method according to yet another embodiment of the present invention;

[0029] Figure 11 It is a front structural schematic diagram of a multi-functional casting machine adopting a hoisting method according to yet another embodiment of the present invention;

[0030] Figure 12 It is a front structural schematic diagram of a multi-functional casting machine with a melting furnace having a plurality of the injection channels according to an embodiment of the present invention;

[0031] Figure 13 It is a top structural schematic diagram of a multi-functional casting machine with a melting furnace having a plurality of the injection channels according to an embodiment of the present invention;

[0032] Icons: Furnace 1, Frame 2, First Manipulator 3, Second Manipulator 4, First Fixture 5, Second Fixture 6, First Drive 7, Second Drive 8, Third Drive 9, Fourth Drive 10, Sixth Drive 11, Injection Port 12, Fifth Drive 13, Seventh Drive 14, Base 15, Injection Channel 16, Injection Boss 17, Mold 18, Graphite Groove 19, Second Injection Port 20, Manipulator 21, Base 22, Suspension Base 23. Detailed Implementation Manner

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] Embodiment

[0035] Combined with Figures 1 to 5 As shown, this embodiment provides a multifunctional casting machine, including a furnace 1 that can inject molten metal into a mold 18 through an injection port 12 under pressure; and a manipulator that can close the mold 18 with a gating system on the side and drive the mold 18 to move so that the gating system approaches or moves away from the injection port 12; an injection channel 16 is inclined inside the furnace, and the injection channel 16 penetrates the upper side of the furnace 1 to form the injection port 12; the manipulator is arranged on a base, and a first drive 7 is arranged on the base, which can drive the manipulator to rotate along the axis of the injection port 12.

[0036] In this embodiment, as Figure 1 and Figure 2As shown, the manipulator is installed on the frame 2. It includes a first manipulator 3 and a second manipulator 4, and first fixtures 5 and second fixtures 6 are respectively arranged at their ends, which are respectively used for clamping two molds 18 that can be clamped. A second drive 8 is arranged on the base, which is used to drive the first manipulator 3 and the second manipulator 4 to approach or move away from each other, so as to realize the clamping and opening of the mold 18. The first fixture 5 and the second fixture 6 are respectively rotatably arranged at the ends of the first manipulator 3 and the second manipulator 4; and third drives 9 are respectively arranged on the first manipulator 3 and the second manipulator 4, which are hydraulic cylinders used to drive the fixtures to turn over, so that the cavity opening of the mold 18 is turned outward, facilitating the demolding of the formed parts.

[0037] In this embodiment, a fourth drive 10 is further arranged on the base, which is used to drive the manipulator to move in the vertical direction to adjust the height of the mold 18, so as to facilitate the adjustment of the pouring port to a position equal in height to the injection port 12. A sixth drive 11 is arranged on the base, which can drive the manipulator to move in the horizontal direction so that the pouring port of the mold 18 is in sealing contact with the injection port 12. A fifth drive 13 is further arranged on the frame 2, which is used to drive the manipulator to turn over, so as to cooperate with the fourth drive 10 to lower the mold 18 into the cooling tank or the graphite tank 19. The base is rotatably arranged on the base 15, and the base is driven by a seventh drive 14 to rotate along the vertical axis, so that the mold 18 is rotated and switched between the loading and unloading station and the injection station.

[0038] In this embodiment, as Figure 4 and Figure 5 shown, a pouring channel 16 that penetrates the upper side of the melting furnace 1 is inclinedly arranged inside the melting furnace 1, and a pouring boss 17 protrudes outward from the pouring port 12 on the upper side of the pouring channel 16. The mold 18 is driven by the first drive 7 to turn over along the horizontal axis of the pouring boss 17, and the inclined and penetrating pouring channel 16 facilitates the smooth pressing of the molten metal into the cavity of the mold 18. The inclined pouring channel 16 that penetrates the upper side of the melting furnace 1 can make the molten metal be more smoothly pressed into the cavity of the mold from the melting furnace 1, and at the same time, it can also avoid the situation that the molten metal blocks the pouring channel 16. Even if part of the molten metal adheres to the pouring channel 16, it is convenient for subsequent cleaning.

[0039] In this embodiment, the pouring port is arranged on the lower side of the mold 18, so that there is a larger cavity below the pouring port after the mold 18 is turned over, so as to better utilize gravity for feeding.

[0040] The casting process of this multi-functional casting machine is described below, asFigure 2 As shown in the top view, the furnace 1 is arranged at the injection molding station on the right side, and the loading and unloading station is in the front.

[0041] As Figures 2 to 5 shown. First, the manipulator of the mold 18 is installed and driven by the seventh drive 14 to rotate to the loading and unloading station, and the core is placed in the mold 18. Driven by the second drive 8, the first manipulator 3 and the second manipulator 4 approach each other to drive the mold 18 to close; then driven by the seventh drive 14, the manipulator is rotated to the injection molding station. Driven by the fourth drive 10, the height of the pouring gate is adjusted to be coaxial with the injection port 12; then the sixth drive 11 drives the mold 18 to move to the right, and the pouring gate is abutted against the injection port 12; furthermore, the molten metal liquid is pressure-injected into the cavity of the mold 18 by the furnace 1 through pressure. Then, the first drive 7 drives the mold 18 to flip at a certain angle along the axis of the injection port 12, and pressure is maintained for a certain period of time after the cavity is filled with the metal liquid; finally, driven by the seventh drive 14, the mold 18 is rotated to the loading and unloading station, and then driven by the second drive 8, the first manipulator 3 and the second manipulator 4 move away from each other to drive the mold 18 to open, and the parts are unloaded; after unloading, the third drive 9 drives the fixture to flip outwards, and at the same time the fifth drive 13 drives the manipulator to flip downwards. At this time, driven by the fourth drive 10, the mold 18 is lowered into the cooling tank below for cooling, or lowered into the graphite tank 19 for graphite coating.

[0042] It should be noted that the pressure maintaining time and the flipping angle along the axis of the injection port 12 are specifically set according to different part formations. Taking the die-casting of thin-walled parts as an example, the pouring gate is arranged on the lower side of the mold 18; when the pouring gate abuts against the injection port 12, the furnace 1 starts to pressure-inject the molten metal liquid into the cavity of the mold 18; at this time, the first drive 7 starts to drive the mold 18 to flip along the axis of the injection port 12 until it flips 180 degrees, so that most of the cavity is placed below the pouring gate; and pressure is maintained for about 5 seconds after the molten metal liquid fills the cavity, and then the pressure is released, and the mold 18 is rotated to the loading and unloading station for opening and unloading; in this way, a thin-walled casting without shrinkage porosity is obtained.

[0043] The above-mentioned multifunctional casting machine can flip the mold 18 along the axis of the injection port 12, which can not only maintain pressure in the cavity of the mold 18, but also flip at a certain angle according to different parts to realize feeding by the gravity of the molten metal. This method realizes double feeding of pressure maintaining and gravity, greatly reducing the problems of internal and external surface shrinkage of the parts; and its structure is simple and the cost is low.

[0044] Certainly, in other embodiments, such as Figure 12 and Figure 13 shown, a plurality of the injection channels 16 may also be arranged horizontally in parallel inside the melting furnace 1; one or more pouring ports adapted to the injection ports 12 of one of the injection channels 16 may be provided on the mold 18. When only one pouring port 12 is provided on the mold 18, the mold can perform vertical part separation on the product in the vertical direction, that is, the cavity in the mold is roughly divided into left and right parts. The pouring port 12 is arranged on the vertical part separation line and can rotate along the axis of the pouring port 12 driven by the first driver 7 to achieve feeding by the gravity of the molten metal; at the same time, the injection ports 12 of the other injection channels 16 are blocked by plugs (not shown in the drawings) to prevent the molten metal from flowing out of the other injection channels when the mold is turned over. When a plurality of pouring ports adapted to the injection ports 12 of a plurality of the injection channels 16 are provided on the mold 18, the mold performs horizontal part separation on the product in the horizontal plane, and the pouring ports are arranged on the part separation line; the arrangement of the plurality of injection channels is suitable for the injection of large products, can achieve rapid filling of the product, and has a lower requirement for the injection pressure, improving the quality of the product.

[0045] In other embodiments, such as Figure 6 and Figure 7 shown, a second injection port 20 may also be provided directly above the melting furnace 1. For some ordinary parts with low requirements for appearance, they only need to be filled and then pressure maintained. Therefore, the pouring port of the mold can be directly provided at the bottom. When the manipulator drives the mold directly above the melting furnace 1 and abuts the pouring port of the mold against the second injection port 20, filling and pressure maintaining can be carried out, thereby realizing conventional die casting.

[0046] In another embodiment, such as Figure 8 and Figure 11As shown, two manipulators 21 are symmetrically arranged on the base. One of the manipulators can hold the mold for mold closing, and then flip the mold to seal the pouring port against the injection port 12 on the side of the melting furnace, and then perform processes such as injection, flipping, and pressure holding to cast parts with high appearance requirements or thin-walled parts. The other manipulator holds the mold for mold closing, and then flips the mold to seal the pouring port against the second injection port 20 directly above the melting furnace, and then performs injection and pressure holding to cast ordinary parts with low appearance requirements. This method can achieve casting of multiple parts with one machine by sharing the same melting furnace. Of course, it can also be used for casting the same parts. One of the manipulators holds the mold for die casting and other series of processes. At this time, the mold held by the other manipulator can be used to place the core. In this way, the two molds can operate continuously, reducing the waiting time for placing the core when one mold is operating.

[0047] Of course, it should be noted that the symmetric arrangement of two manipulators 21 is just one feasible solution. It can also be that four manipulators are evenly arranged on the base, each holding a molding die. One feasible casting method is that when the mold in the first manipulator is injection molded, it rotates 90 degrees to the blanking station, while the other manipulator just rotates 90 degrees to the injection station. At this time, parts can be blanked and injection molded simultaneously respectively. By analogy, continuous injection molding can be achieved, improving efficiency.

[0048] Of course, in the above embodiments, the base 15 can be installed on the base 22 (as Figure 7 shown), or it can be hoisted by hanging the base 23 in a hoisting manner (as Figure 11 shown).

[0049] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0052] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

Claims

1. A multifunctional casting machine, comprising a melting furnace capable of injecting molten metal into a mold under pressure through a pouring port; and a manipulator capable of closing a mold with a pouring port provided on a side and driving the mold to move so that the pouring port approaches or moves away from the pouring port; characterized in that, The inside of the melting furnace is inclined and provided with a casting channel, and the casting channel penetrates through the upper side of the melting furnace to form the casting port; the manipulator is arranged on the base; a first drive is arranged on the base, and it can drive the manipulator to rotate along the axis of the casting port, so as to adjust the flow of molten metal in the mold cavity under the action of gravity.

2. The multifunctional casting machine according to claim 1, wherein The manipulator includes a first manipulator and a second manipulator with a first fixture and a second fixture respectively arranged at the ends; a second drive is arranged on the base for driving the first manipulator and the second manipulator to approach or move away from each other.

3. The multifunctional casting machine according to claim 2, characterized in that, The first fixture and the second fixture are respectively rotatably arranged at the ends of the first manipulator and the second manipulator; third drives are respectively arranged on the first manipulator and the second manipulator for driving the fixtures to turn over.

4. The multifunctional casting machine according to claim 3, characterized in that, A fourth drive is further arranged on the base for driving the manipulator to move in the vertical direction; a fifth drive is further arranged on the frame of the manipulator for driving the manipulator to turn over.

5. The multifunctional casting machine according to claim 1, characterized in that, The casting port of the casting channel on the upper side protrudes outwards with a casting boss.

6. The multi-functional casting machine according to claim 1, characterized in that, A plurality of the casting channels are arranged side by side in the horizontal direction inside the melting furnace; one or more casting ports adapted to the casting ports of the corresponding casting channels can be arranged on the mold. When there is one casting port on the mold, it can rotate along the axis of the casting port driven by the first drive, and the casting ports of the other casting channels are blocked by plugs.

7. The multifunctional casting machine according to claim 6, wherein, The mold performs horizontal or vertical partings on the product according to the characteristics of the product.

8. The multifunctional casting machine according to claim 1, wherein Another casting port is further arranged directly above the melting furnace.

9. The multi-functional casting machine according to any one of claims 1-8, characterized in that, The base is rotatably arranged on the base; the base is connected to the mounting seat or is suspended and hoisted through a hanging base.

10. The multi-functional casting machine according to claim 9, characterized in that, A plurality of the manipulators are arranged on the base.

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