Horizontal die casting machine low speed injection mechanism

Abstract

The application discloses a horizontal die-casting machine low-speed injection mechanism and belongs to the injection mechanism field of the horizontal die-casting machine, in particular relates to a horizontal die-casting machine low-speed injection mechanism which can improve the fullness of an injection tube and provide high injection specific pressure, characterized by comprising a low-speed injection oil tank fixing table, a low-speed injection oil tank, a low-speed injection oil tank pushing cross beam, an injection connecting rod, an injection connecting rod cushion block, an injection punch, an injection connecting rod position adjuster and an injection tube. The low-speed injection mechanism can realize a very short low-speed stroke and does not affect the high-speed of the machine table, thereby improving the fullness of the injection tube, solving the air rolling problem existing in the die-casting of a series of products with low injection tube fullness, such as thin-walled parts, and multiplying the injection specific pressure, thereby realizing extrusion die-casting.

Description

Technical Field

[0001] This application belongs to the field of injection mechanisms for horizontal die casting machines, and particularly relates to a low-speed injection mechanism for horizontal die casting machines that can improve the filling degree of the injection tube and provide a high injection pressure ratio. Technical Background

[0002] Die casting machines are a series of industrial casting machines that use pressure to inject molten metal into a mold, where it cools and solidifies, resulting in a solid metal casting after the mold is opened. They were initially used for die casting type. With advancements in science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles, electronics, and home appliances, die casting technology has experienced extremely rapid development.

[0003] In the current die casting process, die-cast products are prone to casting defects, and products produced by conventional die casting machines have low density. This is mainly due to porosity caused by casting. In addition, the specific pressure of the original die casting machines was generally low, resulting in low product density and a large number of defective products. Especially as the wall thickness of die-cast products becomes thinner, the filling degree of the injection tube becomes lower, causing serious air entrapment during injection and making the product prone to porosity. In order to achieve the molding injection speed, sufficient injection stroke must be ensured. Therefore, simply shortening the injection tube length and reducing the injection tube diameter cannot improve the filling degree. Currently, there is no die casting machine that can meet the requirements of thin-walled die casting. Since the filling degree of the injection tube cannot be guaranteed, the only solution is to increase the injection speed and injection specific pressure. This is equivalent to using a large die casting machine to produce small products, which requires a huge investment in equipment. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a low-speed injection mechanism for a horizontal die casting machine that can improve the filling degree of the injection tube and provide a high injection ratio, thereby solving the casting defects caused by low filling degree of the injection tube, resulting in air entrapment during injection, which leads to low density and porosity in the product.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] A low-speed injection mechanism for a horizontal die-casting machine, characterized in that it includes a low-speed injection oil tank fixing platform, a low-speed injection oil tank, a low-speed injection oil tank pushing beam, an injection connecting rod, an injection connecting rod pad, an injection punch, an injection connecting rod position adjuster, and an injection material pipe.

[0007] The low-speed injection oil tank fixing platform is fixed on the die-casting machine platform, and the low-speed injection oil tank is fixed on the low-speed injection oil tank fixing platform; the two ends of the low-speed injection oil tank pushing beam are respectively fixed to the protruding ends of the left and right low-speed injection oil tanks, and the middle is fixed with the injection connecting rod position adjuster; one end of the injection connecting rod is fixedly connected to the injection punch, and the other end passes through the injection connecting rod position adjuster and the low-speed injection oil tank pushing beam, and is fixedly connected to the injection connecting rod pad; the injection punch is slidably connected in the injection tube; the injection connecting rod pad is provided with a distance from the machine platform injection rod before injection.

[0008] Furthermore, the injection connecting rod and the injection connecting rod position adjuster are slidably connected. The injection connecting rod is provided with a mounting plate, and the injection connecting rod position adjuster has a sliding distance between the mounting plate and the injection connecting rod pad. In this way, when the low-speed injection oil tank pushes the injection punch to bring the molten metal to the gate position in the mold, the machine's injection rod catches up with the injection connecting rod pad at high speed, and provides the high-speed speed required for injection, so that the molten metal fills the mold cavity at high speed. This sliding distance can avoid the machine's injection rod and the injection punch driven by the low-speed injection oil tank from having different speeds, which would affect the injection speed of the injection punch. Before the high-speed filling is almost completed, the low-speed injection oil tank pushes the crossbeam forward to meet the mounting plate on the injection connecting rod, and continues to provide injection force, thereby achieving high injection pressure.

[0009] Furthermore, the two ends of the low-speed injection oil tank push beam are respectively fixed to the extended ends of the left and right low-speed injection oil tanks, and an injection connecting rod position adjuster is fixed in the middle. The position of the injection punch and the injection tube can be adjusted to be on the same central axis by the injection connecting rod position adjuster, thereby ensuring that the injection punch slides smoothly in the injection tube and reducing wear between the two.

[0010] Furthermore, the injection punch is slidably connected in the injection tube, and the injection tube, the injection punch, and the injection connecting rod are aligned with the machine's injection rod. The injection connecting rod pad is positioned a distance from the machine's injection rod before injection. This distance, combined with the low-speed stroke of the injection oil tank pushing the injection punch forward, ensures that the machine's injection rod reaches the required high-speed injection stroke.

[0011] In summary, the technical advantages of this application are as follows: by adding a low-speed injection mechanism, the length of the injection tube is shortened without changing the original injection stroke of the machine's injection rod, thereby improving the filling degree of the injection tube; before the high-speed filling is almost completed, the low-speed injection oil tank pushes the crossbeam forward to meet the mounting plate on the injection connecting rod, continuing to provide injection force. In this way, the force on the punch is the sum of the force of the low-speed injection oil tank and the force of the machine's injection tank, thereby achieving high-pressure injection and enabling extrusion molding, which can improve product density and reduce porosity; this technical solution has low equipment investment and can save costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a common horizontal die-casting machine.

[0013] Figure 2 A partial view of the injection mechanism of a common horizontal die-casting machine;

[0014] Figure 3 A partial view of the low-speed injection mechanism of a horizontal die-casting machine;

[0015] Figure 4 A partial cross-sectional view of a low-speed injection mechanism of a horizontal die-casting machine;

[0016] Figure 5 This is a schematic diagram of a low-speed injection mechanism for a horizontal die-casting machine.

[0017] In the diagram: 1. Injection tube; 2. Injection punch; 3. Injection connecting rod commonly used in die casting machines; 4. Machine base injection rod; 5. Injection connecting rod; 6. Low-speed injection oil tank fixing platform; 7. Low-speed injection oil tank; 8. Injection connecting rod position adjuster; 9. Low-speed injection oil tank push beam; 10. Injection connecting rod pad. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0019] Reference Figures 1 to 5 A low-speed injection mechanism for a horizontal die-casting machine includes an injection pipe 1, an injection punch 2, a machine base injection rod 4, an injection connecting rod 5, a low-speed injection oil tank fixing platform 6, a low-speed injection oil tank 7, an injection connecting rod position adjuster 8, a low-speed injection oil tank pushing beam 9, and an injection connecting rod pad 10.

[0020] The low-speed injection oil tank fixing platform 6 is fixed on the die-casting machine platform, and the low-speed injection oil tank 7 is fixed on the low-speed injection oil tank fixing platform 6; the two ends of the low-speed injection oil tank pushing beam 9 are respectively fixed to the extended ends of the left and right low-speed injection oil tanks 7, and the injection connecting rod position adjuster 8 is fixed in the middle; one end of the injection connecting rod 5 is fixedly connected to the injection punch 2, and the other end passes through the injection connecting rod position adjuster 8 and the low-speed injection oil tank pushing beam 9, and is fixedly connected to the injection connecting rod pad 10; the injection punch 2 is slidably connected in the injection tube 1; the injection connecting rod pad 10 is provided with a distance from the machine platform injection rod 4 before injection.

[0021] Furthermore, the injection connecting rod 5 and the injection connecting rod position adjuster 8 are slidably connected. The injection connecting rod 5 is provided with a hanging platform, and the injection connecting rod position adjuster 8 has a sliding distance between the hanging platform and the injection connecting rod pad 10. In this way, when the low-speed injection oil tank 7 pushes the injection punch 2 to bring the molten metal to the gate position in the mold, the machine injection rod 4 follows the injection connecting rod pad 10 at high speed, and provides the high-speed speed required for injection so that the molten metal fills the mold cavity at high speed. This sliding distance can avoid the machine injection rod 4 and the injection punch 2 pushed by the low-speed injection oil tank 7 from having different speeds, which would affect the injection speed of the injection punch 2. Before the high-speed filling is almost completed, the low-speed injection oil tank 7 pushes the crossbeam 9 forward to meet the hanging platform on the injection connecting rod 5, and continues to provide injection force, thereby achieving high injection pressure.

[0022] Furthermore, the two ends of the low-speed injection oil tank push beam 9 are respectively fixed to the extended ends of the left and right low-speed injection oil tanks 7, and the middle is fixed with an injection connecting rod position adjuster 8. The position of the injection punch 2 and the injection tube 1 can be adjusted by the injection connecting rod position adjuster 8 to keep them on the same central axis, thereby ensuring that the injection punch 2 slides smoothly in the injection tube 1 and reducing wear between them.

[0023] Furthermore, the injection punch 2 is slidably connected in the injection tube 1, and the center of the injection tube 1, the injection punch 2, and the injection connecting rod 5 are kept on the same center line as the machine injection rod 4; the injection connecting rod pad 10 is provided with a distance from the machine injection rod 4 before injection, and this distance, plus the low-speed stroke of the low-speed injection oil tank 7 pushing the injection punch 2 forward, can ensure that the machine injection rod 4 reaches the required high-speed injection stroke.

[0024] Working principle: The low-speed injection oil tank 7 pushes the crossbeam 9 forward. After advancing a certain distance, the front end of the injection connecting rod position adjuster 8 touches the mounting plate on the injection connecting rod, and continues to push the injection connecting rod 5, injection punch 2, and injection connecting rod pad 10 forward. When the injection punch 2 pushes the molten metal to the gate position in the mold at low speed, the machine injection rod 4, under the action of the machine injection tank, follows the injection connecting rod pad 10 at high speed, touches it, and performs high-speed injection, providing the high speed required for injection so that the molten metal fills the mold cavity at high speed. Subsequently, before the high-speed filling is almost completed, the low-speed injection oil tank 7 pushes the crossbeam 9 and the injection connecting rod position adjuster 8 forward to touch the mounting plate on the injection connecting rod 5, and continues to provide injection force, thereby achieving high injection pressure. After the injection is completed, the hammer returns. The machine injection rod 4 retracts to its original position under the action of the machine injection tank. The low-speed injection oil tank 7 pushes the crossbeam 9 and the injection connecting rod position adjuster 8 backward to touch the injection connecting rod pad 10 and return to its original position. This completes one cycle of the operation.

[0025] Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A low-speed injection mechanism for a horizontal die-casting machine, characterized in that: Includes a low-speed injection oil tank fixing platform, a low-speed injection oil tank, a low-speed injection oil tank push beam, an injection connecting rod, an injection connecting rod pad, an injection punch, an injection connecting rod position adjuster, and an injection material pipe; The low-speed injection oil tank fixing platform is fixed on the die-casting machine platform, and the low-speed injection oil tank is fixed on the low-speed injection oil tank fixing platform; the two ends of the low-speed injection oil tank pushing beam are respectively fixed to the two protruding ends of the left and right oil tanks, and the injection connecting rod position adjuster is fixed in the middle; one end of the injection connecting rod is fixedly connected to the injection punch, and the other end passes through the injection connecting rod position adjuster and the low-speed injection oil tank pushing beam, and is fixedly connected to the injection connecting rod pad; the injection punch is slidably connected in the injection tube; the injection connecting rod pad is provided with a distance from the machine platform injection rod before injection.

2. The low-speed injection mechanism for a horizontal die-casting machine according to claim 1, characterized in that, The low-speed injection oil tank fixing platform is fixed on the die-casting machine platform, and the low-speed injection oil tank is fixed on the low-speed injection oil tank fixing platform.

3. The low-speed injection mechanism for a horizontal die-casting machine according to claim 1, characterized in that, The injection connecting rod and the injection connecting rod position adjuster are slidably connected. The injection connecting rod is provided with a hanging platform, and the injection connecting rod position adjuster has a sliding distance between the hanging platform and the injection connecting rod pad.

4. The low-speed injection mechanism for a horizontal die-casting machine according to claim 1, characterized in that, The low-speed injection oil tank push beam is fixed at both ends to the left and right oil tank extension ends, and an injection connecting rod position adjuster is fixed in the middle.

5. The low-speed injection mechanism for a horizontal die-casting machine according to claim 1, characterized in that, The injection punch is slidably connected in the injection tube, and the center of the injection tube, the injection punch, and the connecting rod is kept on the same center line as the injection rod of the machine. The injection connecting rod pad is provided with a distance from the injection rod of the machine before injection.

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