CN110814314A - A casting and forging integrated die-casting machine - Google Patents

Abstract

The invention is applicable to the technical field of die casting, and discloses a casting and forging integrated die-casting machine, comprising a frame, the frame is provided with a clamping device for locking the mould and an extruder for filling the cavity of the mould with molten raw materials The machine frame is further provided with a forging system for extruding the pre-stored raw material into the die cavity, the forging system includes a forging rod and a forging driving part for driving the action of the forging rod. In a casting and forging integrated die-casting machine provided by an embodiment of the present invention, after the extrusion system fills the mold cavity with molten raw material, the forging rod moves to extrude the pre-stored raw material at least partially into the mold cavity, so that the mold cavity can be filled with molten raw material. The raw material is further densified to avoid the generation of stomata and sand holes inside the part, and to prevent the parts from having cracks, cold insulation, shrinkage and other defects. Due to the forging effect of the forging rod, the performance of the product is greatly increased, and its density and tensile strength are high. The parts have good performance.

Description

A casting and forging integrated die-casting machine

technical field

The invention belongs to the technical field of die casting, and in particular relates to a casting and forging integrated die casting machine.

Background technique

At present, the die-casting machines on the market generally can only use cast aluminum alloys, such as ADC12, 380 and other materials. If the deformed aluminum alloy die-casting products are used, the obtained parts may have various defects at the same time, such as cracks, cold insulation, shrinkage, etc. Because deformed aluminum alloys can only be used in extrusion and forging.

Moreover, the aluminum alloy parts cast by the current ordinary die-casting machines are relatively low in density and tensile strength, and cannot meet the standards required for high-strength use in automobiles, nor can they be anodized.

In addition, the current ordinary die-casting machine must use high-speed injection during die-casting to ensure no defects on the surface of the product. During the process of high-speed injection production, the internal stomata and sand holes are inevitably generated, and the parts cannot be heat treated. When the workpiece is heat treated, the pores inside it will expand, resulting in poor surface bulging and poor performance of the workpiece.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the above-mentioned technical problems, and provides a casting and forging integrated die-casting machine, which has good product performance.

The technical scheme of the present invention is as follows: a casting and forging integrated die-casting machine includes a frame, and the frame is provided with a clamping device for locking the mold and an extrusion system for filling the cavity of the mold with molten raw materials. The frame is also provided with a forging system for extruding the pre-stored raw material into the die cavity, the forging system includes a forging rod and a forging driving component for driving the forging rod to move.

Specifically, the frame has a mold installation position, and the extrusion system and the forging system are respectively disposed on two sides of the mold installation position.

Alternatively, the frame has a mold installation position, and the forging system is provided with two sets, which are respectively disposed on both sides of the mold installation position.

Specifically, the forging driving component includes a forging oil cylinder, and the forging rod is connected to the forging oil cylinder.

Specifically, the forging oil cylinder has a forging piston, and the forging piston is connected with a first driving component for driving the forging piston to move forward. A forged compressed gas tank that instantly fills the forged oil cylinder with compressed gas when in position.

Specifically, the forging oil cylinder is connected with a forging oil circuit plate, and the forging rod is connected with the forging oil circuit plate.

Specifically, the forged compressed gas tank is a nitrogen tank, and one or at least two nitrogen tanks are provided.

Specifically, the extrusion system includes an extrusion rod and an extrusion oil cylinder for driving the extrusion rod.

Specifically, the squeezing oil cylinder has a squeezing piston, the squeezing piston is connected with a second driving member for driving the squeezing piston to move forward, and the squeezing driving member is further included in the squeezing piston When moving forward to the set position, the injection compressed air tank continuously fills the compressed air into the extrusion cylinder.

Specifically, the die is provided with a forging hole, the forging rod is provided at one end of the forging hole, and the other end of the forging hole communicates with the cavity of the die.

In a casting and forging integrated die-casting machine provided by the embodiment of the present invention, after the extrusion system fills the mold cavity with molten raw material, the forging rod moves to extrude the pre-stored raw material at least partially into the mold cavity, so that the mold cavity can be filled with molten raw material. The raw material is further densified to avoid the generation of stomata and sand holes in the part, and to prevent the parts from having cracks, cold insulation, shrinkage and other defects. Due to the forging effect of the forging rod, the performance of the product is greatly increased, and its density and tensile strength are high. It can meet the high-strength requirements of automobiles. The raw materials can be cast aluminum alloy materials such as ADC12 and 380, or deformed aluminum alloys. The parts can be anodized and the performance of the parts is good.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic plan view of a casting and forging integrated die-casting machine provided by an embodiment of the present invention;

2 is a schematic cross-sectional view of a casting and forging integrated die-casting machine provided by an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

As shown in FIG. 1 and FIG. 2 , an integrated casting and forging die-casting machine provided by an embodiment of the present invention includes a frame 1 , and the frame 1 is provided with a clamping device 2 for locking a mold and a mold clamping device 2 for casting molten raw materials. The extrusion system 40 for filling the mold cavity, the frame 1 is also provided with a forging system 30 for extruding the pre-stored raw material into the mold cavity, the forging system 30 includes a forging rod 31 (in this embodiment, the forging The rod 31 refers to the rod used for the forging system 30 to forge the workpiece, not specifically the forging rod) and the forging driving part used to drive the forging rod 31 to act. The extrusion system 40 fills the mold cavity with molten raw material Afterwards, the forging rod 31 moves to extrude the pre-stored raw material at least partially into the cavity of the mold, so as to further densify the raw material in the cavity, avoid the generation of air holes and sand holes in the part, and prevent the part from cracks, cold insulation and shrinkage. Due to the forging effect of the forging rod 31, the performance of the product is greatly increased, and its density and tensile strength are high, which can meet the high-strength requirements of automobiles. Deformed aluminum alloys can be used, and the parts can be anodized.

Deformed aluminum alloy (7075, 6061 and other market materials) can be used, mainly for the forming of deformed aluminum alloy high-strength materials, melt into liquid at a high temperature of 730 to 750 degrees, pour into the feeding cup, and squeeze the system at 0.1M/S. The speed and high pressure are extruded forward, filling the cavity, runner, and forging hole of the forging die. During the cooling process, the forging system will forge the product in the die cavity with high pressure (usually a delay of 0.1S after the injection is completed). to 1 second, the product temperature is around 600 degrees Celsius). Among them, the extrusion system is more than 3 times the pressure of the injection system of the ordinary die-casting machine, which can ensure sufficient continuous high pressure without turning on the high-speed to meet the slow-speed high-pressure forward extrusion (the ordinary die-casting machine does not turn on the high-speed The injection pressure does not have high pressure), extrusion makes the deformed aluminum alloy fill the cavity in the forging die at low speed and high pressure, and the air has enough time to be removed during the extrusion process, which will not cause pores in the product and can make the appearance density meet the requirements. The forging system performs high pressure forging on the product after the extrusion system is completed, and the forging start time, pressure holding time and pressure can be freely adjusted. The forging system requires the cooperation of a die with a forging function, and this type of die is called a forging die. The forging system forges a part of the product or a whole surface according to the die, and the depth of the product forging can be between 0.5 and 1 mm. Forging is to maximize the density of the product and prevent cracks and shrinkage holes in the heat shrinkage due to insufficient density.

Specifically, the frame 1 has a mold installation position, and the extrusion system 40 and the forging system 30 are respectively disposed on two sides of the mold installation position. The frame 1 may also be provided with a mold clamping device 2. After the mold is installed in place, the mold clamping device 2 can lock the mold, and open and close the mold through the mold opening and closing mechanism. The die has forging holes and cavities. Forging holes can be point pressure holes or integral pressurized holes. The shape of the front end of the forged rod 31 may match the shape of the forged hole.

Alternatively, the forging system 30 is provided with two sets, which are respectively provided on the same side or both sides of the die installation position. Of course, more than two groups of forging systems 30 or forging rods 31 can also be provided, and when forming large-scale products, the parts that need structural reinforcement can be respectively forged. Each forging system 30 or forging rod 31 can be controlled synchronously or independently.

Specifically, the forging driving component includes a forging oil cylinder 32 , and the forging rod 31 is directly or indirectly connected to the forging oil cylinder 32 .

Specifically, the forging oil cylinder 32 (in this embodiment, refers to the oil cylinder used for the forging system 30, not specifically the forging-shaped oil cylinder) has a forged piston 33 (in this embodiment, refers to the piston used for the forging system 30, (not referring to a forged piston), the forged piston 33 is connected with a first driving component for driving the forged piston 33 to move forward, and the first driving component may be a driving device for driving the forged piston 33 to drive linearly, It can be a drive component such as a linear motor. The forging driving component also includes a forging compressed air tank 34 (in this embodiment, for the forging system 30 ) that instantly fills the forging cylinder 32 with compressed gas when the forging piston 33 moves forward to a set position. Compressed gas tanks, not specifically forged compressed gas tanks).

Specifically, the forging oil cylinder 32 is connected with a forging oil circuit plate (in this embodiment, it refers to the oil circuit plate used for the forging system 30 , rather than the forged oil circuit plate), and the forging rod 31 is connected to the oil circuit plate. Forged oil circuit board.

Specifically, the forged compressed gas tank 34 is a nitrogen tank, and one or at least two nitrogen tanks may be provided. When there are two (groups) or more than two (groups) of nitrogen tanks, each (group) of nitrogen tanks can work synchronously to increase the instantaneous pressure. Each (group) of nitrogen tanks can also work alternately. When one (group) of nitrogen tanks is deflated, the rest of the nitrogen tanks can be inflated.

Specifically, the extrusion system 40 includes an extrusion rod 41 and an extrusion driving component for driving the extrusion rod 41 , and the extrusion driving component may be an extrusion oil cylinder 42 .

Specifically, the squeezing cylinder 42 has a squeezing piston 43, and the squeezing piston 43 is connected with a second driving member for driving the squeezing piston 43 to move forward, and the squeezing driving member is further included in the When the extrusion piston 43 moves forward to the set position, the injection compressed gas tank 44 that continuously fills the extrusion cylinder 42 with compressed gas, so that the raw material can quickly fill the mold. The injection compressed air tank 44 is a nitrogen tank, and the nitrogen tank is provided with one (group) or at least two (groups). Each (group) nitrogen tank can work synchronously, and each (group) nitrogen tank can also work alternately. When one (group) nitrogen tank is deflated, the other nitrogen tanks can be inflated.

Specifically, the die is provided with a forging hole, the forging rod 31 is provided at one end of the forging hole, and the other end of the forging hole communicates with the cavity of the die. The front end of the forged rod 31 can be aligned or protruded into the forged hole. There may be multiple forging holes. In specific applications, one or more groups of forging holes may be provided opposite to each other. In this way, each group of forging holes corresponds to forging rods 31 for forging opposite to each other, which is beneficial to further improve the performance of the product. A protective cover may be provided at the forging hole, and the forging rod 31 passes through the protective cover and extends into the forging hole. The protective cover can be connected with a pressurized gas pipe to prevent the raw material from overflowing from the forging hole and the forging rod 31 . The forging rod 31 and the forging hole may be provided with high temperature resistant sealing oil. The forging rod 31 can be connected with a distance sensor, which can accurately sense the amount of forging pressure.

In an integrated die-casting machine for casting and forging provided by the embodiment of the present invention, after the extrusion system 40 fills the mold cavity with molten raw material, the forging rod 31 moves to extrude the pre-stored raw material at least partially into the mold cavity, so that the cavity The raw materials inside are further densified, so as to avoid the generation of stomata and sand holes in the parts, and to prevent defects such as cracks, cold insulation, and shrinkage in the parts. It has high strength and can meet the high-strength requirements of automobiles. The raw materials can be cast aluminum alloy materials such as ADC12 and 380, or deformed aluminum alloys can be used. The parts can be anodized.

In a specific application, the above-mentioned method of using a casting and forging integrated die-casting machine may include the following steps:

Fix the mold with forging holes and cavities to the frame 1 of the integrated casting and forging machine through the clamping device 2, and control the mold clamping;

The injection extrusion rod 41 of the extrusion system 40 fills the mold cavity and the forging hole with molten raw material;

The forging rod 31 of the forging system 30 at least partially extrudes the pre-stored raw material of the forging hole into the cavity of the die.

Specifically, the extrusion cylinder 42 continuously drives the injection extrusion rod 41 at a set pressure to fill the mold cavity and the forging hole with molten raw material.

Specifically, the second driving component drives the injection piston in the extrusion cylinder 42 to move forward to a set position, and the injection compressed air tank 44 keeps the extrusion cylinder 42 under continuous pressure, so that the injection cylinder 42 is compressed. Rod 41 fills the mold cavity and forging hole with molten raw material.

Specifically, the first driving component drives the forging piston 33 in the forging oil cylinder 32 to move forward to the set position, the forging compressed air tank 34 instantly fills the forging oil cylinder 32 with compressed air, and the forging oil cylinder 32 is instantly pressurized and The forging rod 31 is used to forge the workpiece in the cavity. After the workpiece is formed and cooled, the mold is opened, and the workpiece can be ejected through the ejection system 5 .

Specifically, the pressure of the forging rod 31 acting on the pre-stored raw material in the forging hole is greater than the pressure of the injection extrusion rod 41 acting on the raw material.

Specifically, the extrusion speed of the injection extrusion rod 41 acting on the raw material is lower than or greater than the instantaneous speed of the forging rod 31 acting on the raw material pre-stored in the forging hole.

Specifically, before the forging system 30 starts to work, the pressure and pressure holding time of the forging system 30 are set first.

Specifically, before the forging system 30 starts to work, the working times of the forging system 30, as well as the interval time, pressure and pressure holding time of each time are set. Specifically, the next forging pressure can be greater than the current one. The forging pressure of the forging, specifically, the pressure holding time of the next forging may be greater than the holding pressure time of the current forging. By increasing the pressure successively, the lattice structure in the part can be gradually densified, the mechanical properties of the part are better, the product reliability is high, and it can meet the application of high strength.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. The utility model provides an integrative die casting machine of casting and forging, includes the frame, the frame is provided with the mode locking device who is used for locking mould and is used for annotating the extrusion system of mould cavity with the melting raw materials, a serial communication port, the frame still is provided with and is used for prestoring raw materials and extrudees the forging and pressing system to mould cavity, the forging and pressing system is including forging the pole and being used for the drive forge the forging and pressing driver part of pole action.

2. The die casting and forging integrated machine as claimed in claim 1, wherein said frame has a die mounting location, and said extruding system and said forging system are disposed on both sides of said die mounting location.

3. The casting and forging integrated die-casting machine according to claim 1, wherein the frame has die mounting positions, and the forging system is provided in two sets and is respectively provided on both sides of the die mounting positions.

4. The cast-forged integrated die casting machine of claim 1, wherein said forging actuator comprises a forging cylinder, and said forging rod is connected to said forging cylinder.

5. The cast-forge integrated die-casting machine of claim 4, wherein said forging cylinder has a forging piston, said forging piston is connected with a first driving part for driving said forging piston to move forward, said forging driving part further comprises a forging compressed air tank for instantaneously filling said forging cylinder with compressed air when said forging piston moves forward to a set position.

6. The cast-forging integrated die-casting machine as claimed in claim 4, wherein the forging cylinder is connected with a forging oil passage plate, and the forging rod is connected with the forging oil passage plate.

7. The integrated die casting and forging machine according to claim 5, wherein the forging compressed gas tank is a nitrogen gas tank provided with one or at least two.

8. The die casting and forging integrated machine as claimed in any one of claims 1 to 7, wherein said extrusion system includes an extrusion rod and an extrusion cylinder for driving said extrusion rod.

9. The all-in-one die casting machine according to claim 8, wherein said squeeze cylinder has a squeeze piston to which a second drive means for driving said squeeze piston forward is connected, and said squeeze drive means further comprises a shot compressed gas tank for continuously charging said squeeze cylinder with compressed gas when said squeeze piston moves forward to a set position.

10. The die casting and forging integrated die casting machine as claimed in any one of claims 1 to 7, wherein said die is provided with a forging hole, said forging bar is provided at one end of said forging hole, and the other end of said forging hole communicates with a cavity of said die.

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