A spray head for a die casting spray machine

Abstract

The utility model discloses a spray machine nozzle for die casting, including nozzle tailstock and nozzle body, nozzle body is connected on the nozzle tailstock, be equipped with the mixing chamber in the nozzle tailstock, be equipped with the injection chamber in the nozzle body, and the injection chamber is connected with the mixing chamber between series connection and has the cyclone chamber of circular platform state, and the cyclone chamber's little head end is connected with the injection chamber, and the big head end is connected with the mixing chamber, and the tower spring of outer wall adhesion cavity inner wall is adapted and is embedded in the cyclone chamber, and the big head end of tower spring is equipped with the limit baffle ring of limit making axial sliding, and the limit baffle ring is equipped on the nozzle tailstock, and the side of nozzle tailstock is equipped with the release agent supply connector, and the side of nozzle tailstock still is equipped with the gas water supply combination connector, and the one end with the outside connection, the other end with the injection chamber connection of the atomizing hole of nozzle body is arranged in the one end away from the nozzle tailstock. This spray machine nozzle has the characteristics of low processing difficulty, convenient maintenance, perfect overall function and strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of die-casting equipment technology, and more specifically, it relates to a spray nozzle for a die-casting sprayer. Background Technology

[0002] In die casting production, the atomization effect of the spray nozzle directly affects the uniformity of the release agent coverage and the quality of the die castings. To improve the atomization effect, existing nozzles often use a swirl structure machined into the wall of the internal swirl chamber to create a swirling flow of the gas-liquid mixture before spraying it out. However, the swirl chamber space is small, and directly milling or casting the swirl blades into the chamber wall presents problems such as difficulty in controlling machining accuracy, complex processes, and high production costs. Furthermore, for small-sized nozzles, machining the swirl blades into the chamber wall can easily result in insufficient structural strength and rapid blade wear, leading to a short nozzle lifespan and difficulty in meeting the requirements of efficient and stable die casting production, resulting in poor overall performance. Therefore, this utility model proposes a spray nozzle for die casting. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a spray nozzle for die casting, which has the characteristics of low processing difficulty and convenient maintenance.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The present utility model relates to a spray nozzle for a die-casting sprayer, comprising a nozzle tail seat and a nozzle body. The nozzle body is threadedly connected to the nozzle tail seat. The nozzle tail seat has a mixing chamber, and the nozzle body has a spraying chamber. A frustum-shaped swirling chamber is connected in series between the spraying chamber and the mixing chamber. The small end of the swirling chamber is connected to the spraying chamber, and the large end is connected to the mixing chamber. A tower-shaped spring with its outer wall conforming to the inner wall of the swirling chamber is fitted inside the swirling chamber. The large end of the tower-shaped spring has a limiting ring to restrict axial sliding. The limiting ring is located on the nozzle tail seat. A mold release agent supply connector is provided on the side of the nozzle tail seat. An air supply and water supply combination connector is also provided on the side of the nozzle tail seat. An atomizing hole is provided at one end of the nozzle body facing away from the nozzle tail seat, with one end connected to the outside and the other end connected to the spraying chamber.

[0005] The present invention is further configured such that: a shaft is rotatably connected to one end of the nozzle tailstock facing away from the nozzle body; a mixing cam is provided at one end of the shaft; and a motor for controlling rotation is connected to the other end of the shaft; the motor is fixedly connected to the nozzle tailstock; and the mixing cam is located in the mixing chamber.

[0006] The present invention is further configured such that: an internally threaded countersunk hole is provided on the nozzle tail seat, and an externally threaded post is connected to the internal thread of the internally threaded countersunk hole, and the externally threaded post is connected to the nozzle body.

[0007] The present invention is further configured such that: a sealing washer is provided at the bottom of the internal thread countersunk hole, and the external thread post is pressed against the sealing washer.

[0008] The present invention is further configured such that the included angle between the release agent supply connector and the gas and water supply combination connector is 180°.

[0009] The present invention is further configured such that the limiting ring and the nozzle tail seat are an integral structure.

[0010] In summary, this utility model has the following beneficial effects: 1. By pre-embedding a tower-shaped spring in the swirl chamber to form a spiral groove, there is no need to directly process the swirl blades on the chamber wall, which avoids the problem of precision machining in a narrow space, simplifies the nozzle production process, reduces the investment in processing equipment and labor time, and significantly reduces production costs.

[0011] 2. The spiral structure of the tower-shaped spring can form a continuous and uniform spiral groove, which can stably generate swirling flow when the gas-liquid mixture flows through it. Compared with the irregularity of the spiral blades that are easy to occur in traditional processing, the atomization is more delicate and uniform, improving the surface quality of the die-cast parts.

[0012] 3. The tower spring can be flexibly selected according to the size of the nozzle chamber to fit different models of sprayer nozzles; if the spiral structure wears out in the future, only the tower spring needs to be replaced, without replacing the entire nozzle, thus extending the service life of the nozzle body and reducing maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram illustrating the nozzle body of this utility model; Figure 3 This is a schematic diagram illustrating the structure of the nozzle tailstock of this utility model; Figure 4 This is a schematic diagram illustrating the structure of the tower-shaped spring in this utility model. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0015] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0016] Example 1 See Figures 1 to 4 As shown, the spray nozzle for a die-casting sprayer in this embodiment includes a nozzle tailstock 100 and a nozzle body 200. The nozzle body 200 is threaded onto the nozzle tailstock 100. The nozzle tailstock 100 contains a mixing chamber 1, and the nozzle body 200 contains a spray chamber 2. A frustum-shaped swirling chamber 3 is connected in series between the spray chamber 2 and the mixing chamber 1. The smaller end of the swirling chamber 3 is connected to the spray chamber, and the larger end is connected to the mixing chamber. A tower-shaped spring 4 with its outer wall conforming to the inner wall of the swirl chamber 3 is fitted inside the chamber. The large end of the tower-shaped spring 4 is provided with a limiting ring 5 to restrict axial sliding. The limiting ring 5 is provided on the nozzle tail seat 100. The side of the nozzle tail seat 100 is provided with a mold release agent supply connector 6. The side of the nozzle tail seat 100 is also provided with an air supply and water supply combination connector 7. The nozzle body 200 has an atomizing hole 8 at one end connected to the outside and the other end connected to the spray chamber.

[0017] Furthermore, the nozzle tailstock 100 is provided with an internally threaded countersunk hole 12, and an externally threaded post 13 is internally threaded to the internally threaded countersunk hole 12, which is connected to the nozzle body 200.

[0018] Furthermore, a sealing washer 14 is provided at the bottom of the internal thread countersunk hole 12, and the external thread post 13 is pressed against the sealing washer 14.

[0019] Furthermore, the angle between the mold release agent supply connector 6 and the gas and water supply combination connector 7 is 180°.

[0020] Furthermore, the limiting ring 5 and the nozzle tail seat 100 are an integral structure.

[0021] In this embodiment, a release agent supply connector 6 is used to connect to a release agent supply pipe for pumping release agent into the mixing chamber 1. A water and air supply combination connector 7 is used to connect to the mixed water-air mixture for pumping water and air into the mixing chamber 1. When the release agent and the water-air mixture meet in the mixing chamber 1, the increased internal pressure causes the mixture to be squeezed into the swirling chamber 3. Because a tower-shaped spring 4 is arranged inside, a spiral groove is formed near the wall by the tower-shaped spring 4. When the release agent and the water-air mixture pass through the swirling chamber 3, a swirling flow is formed with strong internal turbulence, and finally flows into the spraying chamber 2 and is sprayed out from the atomizing hole 8.

[0022] The internal thread countersunk hole 12 and the external thread post 13 facilitate the disassembly and assembly of the nozzle tail seat 100 and the nozzle body 200.

[0023] The sealing gasket 14 is used to enhance the sealing effect.

[0024] Example 2 See Figures 1 to 4 As shown, the spray nozzle for die casting involved in this embodiment is further configured based on embodiment 1, wherein the end of the nozzle tail seat 100 facing away from the nozzle body is rotatably connected to a shaft 9, one end of the shaft 9 is provided with a mixing cam 10, and the other end is drivenly connected to a motor 11 for controlling rotation, the motor 11 is fixedly connected to the nozzle tail seat 100, and the mixing cam 10 is provided in the mixing chamber 1.

[0025] In this embodiment, the combination of shaft 9, mixing cam 10 and motor 11 enables the mixing cam 10 to rotate within the mixing chamber 1, thereby enhancing the mixing effect of the additives in the chamber.

[0026] The spray nozzle for die casting involved in this utility model forms a spiral groove by pre-embedding a tower-shaped spring in the swirling chamber. This eliminates the need to directly machine the swirl blades on the chamber wall, avoiding the precision machining challenges in confined spaces, simplifying the nozzle production process, reducing investment in processing equipment and labor time, and significantly lowering production costs. The spiral structure of the tower-shaped spring can form a continuous and uniform spiral groove, which can stably generate swirling flow when the gas-liquid mixture flows through it. Compared with the irregular swirl blades that are prone to occur in traditional processing, the atomization is more delicate and uniform, improving the surface quality of the die casting. Furthermore, the tower-shaped spring can be flexibly selected according to the size of the nozzle chamber to adapt to different models of spray nozzles. If the spiral structure wears out in the future, only the tower-shaped spring needs to be replaced, without replacing the entire nozzle, extending the service life of the nozzle body, reducing maintenance costs, and making the overall function complete and highly practical.

[0027] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0028] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A spray nozzle for die casting, comprising a nozzle tailstock and a nozzle body, wherein the nozzle body is threadedly connected to the nozzle tailstock, characterized in that: The nozzle tailstock has a mixing chamber, and the nozzle body has a spraying chamber. A frustum-shaped swirling chamber is connected in series between the spraying chamber and the mixing chamber. The small end of the swirling chamber is connected to the spraying chamber, and the large end is connected to the mixing chamber. A tower-shaped spring with its outer wall conforming to the inner wall of the swirling chamber is fitted inside the swirling chamber. The large end of the tower-shaped spring has a limiting ring to restrict axial sliding. The limiting ring is located on the nozzle tailstock. The side of the nozzle tailstock has a mold release agent supply connector and an air and water supply combination connector. The end of the nozzle body facing away from the nozzle tailstock has an atomizing hole with one end connected to the outside and the other end connected to the spraying chamber.

2. The spray nozzle for die casting according to claim 1, characterized in that: The nozzle tailstock is rotatably connected to a shaft at one end facing away from the nozzle body. One end of the shaft is equipped with a mixing cam, and the other end is connected to a motor that controls the rotation. The motor is fixedly connected to the nozzle tailstock, and the mixing cam is located in the mixing chamber.

3. The spray nozzle for die casting according to claim 1 or 2, characterized in that: The nozzle tailstock has an internally threaded countersunk hole, and an externally threaded post is connected to the internal thread of the countersunk hole. The externally threaded post is connected to the nozzle body.

4. The spray nozzle for die casting according to claim 3, characterized in that: The bottom of the internally threaded countersunk hole is provided with a sealing gasket, and the externally threaded post is pressed against the sealing gasket.

5. The spray nozzle for die casting according to claim 1, characterized in that: The angle between the release agent supply connector and the gas and water supply combination connector is 180°.

6. The spray nozzle for die casting according to claim 1, characterized in that: The limiting ring and the nozzle tailstock are an integral structure.

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