Die casting machine injection head with self-compensation function

Abstract

The utility model discloses a die -casting machine injection head with self -compensation function, including support body and working body, and support body one end is provided with connecting hole, and working body is installed in the one end of support body away from connecting hole, and the recess is provided with in the one end of working body away from support body. The utility model discloses can make working body expand and stick to the inner wall of material pipe through the reverse force of material liquid, to make up the gap of both, avoid material liquid to leak.

Description

Technical Field

[0001] This utility model relates to the field of injection technology, and more specifically, to an injection head for a die-casting machine with self-compensation function. Background Technology

[0002] Pressure casting is a special type of casting within the foundry industry. It's a high-efficiency, precision casting method that involves pouring molten or semi-molten metal into the pressure chamber of a die-casting machine. Driven by the injection head, the molten metal fills the mold cavity at high speed, and under high pressure, the molten or semi-molten metal cools and solidifies to form the final casting. The component that propels the molten alloy material forward in the pressure chamber and fills the mold cavity is the injection head of the die-casting machine. Conventional injection heads are usually manufactured as a single piece, with a lifespan of 3,000-10,000 cycles. Injection heads made of special materials with increased hardness and wear resistance can have a lifespan of 20,000-30,000 cycles, but this significantly impacts the lifespan of the feed tube, increasing the lifespan of the injection head while reducing the lifespan of the feed tube.

[0003] Die casting has a high production efficiency, typically producing one mold per minute. However, the production environment is also quite harsh. The lifespan of the material tube is usually around 50,000-100,000 mold cycles, and the lifespan of the injection head is even shorter. Conventional injection heads become smaller with use due to sliding wear, and the gap between the worn head and the material tube increases, requiring frequent replacement. Downtime for repairs is a waste of time. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a die-casting machine injection head with self-compensation function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a die-casting machine injection head with self-compensation function, including a support body and a working body. One end of the support body is provided with a connecting hole, and the working body is installed at the end of the support body away from the connecting hole. The end of the working body away from the support body is provided with a groove.

[0007] Furthermore, the diameter of the groove at the end closer to the support is smaller than the diameter at the end farther from the support.

[0008] Furthermore, the working body is made of soft alloy.

[0009] Furthermore, the soft alloy is a copper-based alloy.

[0010] Furthermore, the support body and the working body are connected in a detachable manner.

[0011] Furthermore, the end of the support body is connected to a connecting stud, and the working body has a threaded hole that mates with the connecting stud.

[0012] Furthermore, the support body includes a first column part and a second column part connected together, the diameter of the first column part being larger than that of the second column part, and a working body is installed on the first column part, the diameter of the working body being larger than that of the first column part.

[0013] The beneficial effects of this utility model are: after the alloy liquid filling is completed, pressurization is carried out, and the liquid transfers a reverse force to the working body. The inner wall of the groove encounters great pressure, causing the working body to deform. The working body expands and sticks tightly to the inner wall of the material tube, compensating for the part lost due to friction between the working body and the material tube, and extending the service life of the injection head. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a die-casting machine injection head with self-compensation function in this embodiment.

[0015] Reference numerals in the attached drawings: 1. Support body; 2. Working body; 3. Groove; 4. Connecting hole; 5. Column part one; 6. Column part two; 7. Connecting stud. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 As shown, a die-casting machine injection head with self-compensation function includes a support body 1 and a working body 2. One end of the support body 1 has a connecting hole 4, and the working body 2 is installed at the end of the support body 1 away from the connecting hole 4. The end of the working body 2 away from the support body 1 has a groove 3. The working body 2 is made of soft alloy, which is a copper-based alloy, so that the working body 2 can be deformed under pressure.

[0018] During normal operation, the injection head advances, filling the mold cavity with molten alloy. The pressurization start-up increases the pressure of the molten material. The groove 3 on the end face of the working body 2 is subjected to the reverse force of the molten material, causing the working body 2 to expand and press tightly against the inner wall of the material tube. This compensates for the loss caused by the friction between the working body 2 and the material tube, extending the service life of the injection head.

[0019] Because the working body 2 is made of soft alloy, it causes less wear on the feed tube, protects the feed tube, and extends its service life.

[0020] It extends the lifespan of the feed tube and injection head, reduces downtime, improves production efficiency, and lowers production costs.

[0021] Furthermore, the diameter of the groove 3 near the support 1 is smaller than the diameter of the end away from the support 1, which makes the wall thickness of the working body 2 away from the support 1 thinner. Under the reverse pressure of the liquid material, it will expand and deform more easily, so that the end of the working body 2 away from the support 1 can better fit the inner wall of the material tube and prevent the liquid material from leaking between the working body 2 and the material tube.

[0022] Furthermore, the support body 1 and the working body 2 are detachably connected. The end of the support body 1 is connected to a connecting stud 7, and the working body 2 has a threaded hole that mates with the connecting stud 7. The connection between the two is achieved through the engagement of the threaded hole and the connecting stud 7. With this detachable connection, only the working body 2 of the injection head needs to be replaced, instead of replacing the entire injection head, which can greatly reduce production costs.

[0023] Furthermore, the support body 1 includes a connected column portion 5 and a column portion 6. The diameter of column portion 5 is larger than that of column portion 6. The working body 2 is installed on column portion 5, and the diameter of the working body 2 is larger than that of column portion 5. This diameter setting ensures that the support body 1 will not come into contact with the inner wall of the material tube and generate friction, thus only serving a supporting function. The diameter of the working body 2 is slightly smaller than the inner diameter of the material tube, so that it can be slightly deformed to fit tightly against the inner wall of the material tube.

[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A die-casting machine injection head with self-compensation function, characterized in that, It includes a support body (1) and a working body (2). One end of the support body (1) is provided with a connecting hole (4). The working body (2) is installed at the end of the support body (1) away from the connecting hole (4). The end of the working body (2) away from the support body (1) is provided with a groove (3). The working body (2) is made of soft alloy.

2. The die-casting machine injection head with self-compensation function according to claim 1, characterized in that, The diameter of the groove (3) near the support (1) is smaller than the diameter of the groove away from the support (1).

3. The die-casting machine injection head with self-compensation function according to claim 1, characterized in that, Soft alloys are copper-based alloys.

4. The die-casting machine injection head with self-compensation function according to claim 1, characterized in that, The support (1) and the working body (2) are detachably connected.

5. The die-casting machine injection head with self-compensation function according to claim 4, characterized in that, The end of the support body (1) is connected to a connecting stud (7), and the working body (2) has a threaded hole that matches the connecting stud (7).

6. The die-casting machine injection head with self-compensation function according to claim 1, characterized in that, The support (1) includes a first column part (5) and a second column part (6) connected together. The diameter of the first column part (5) is larger than that of the second column part (6). The working body (2) is installed on the first column part (5). The diameter of the working body (2) is larger than that of the first column part (5).

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