Spraying substrate sprayer of high-pressure die casting machine

Abstract

The invention belongs to the technical field of mold spraying, and particularly relates to a high-pressure die casting machine spraying base plate spray head which comprises a spray head fixing seat internally provided with a coating flow guide channel and an air flow guide channel. The rear end of the lengthened extension pipe is rotatably connected to the spray head fixing seat through a universal adjusting ball, and the lengthened extension pipe is communicated with the air flow guide channel; the spraying flow guide pipe is arranged in the lengthened extension pipe in a penetrating mode, a gap is formed between the spraying flow guide pipe and the lengthened extension pipe, and the rear end of the spraying flow guide pipe is connected with the coating flow guide channel; and the atomizing head assembly is connected to the front end of the lengthened extension pipe and provided with an atomizing mixing cavity used for mixing and atomizing the coating and the compressed air, and the front end of the spraying flow guide pipe is connected with the atomizing mixing cavity. The device effectively solves the problem that the spray head is easy to block, ensures the spraying amount, reduces the influence of product mold sticking, shortens the abnormal shutdown time, improves the product quality, is suitable for high pressure casting machines with different mold opening distances, reduces the spraying time, and shortens the product rhythm.

Description

Technical Field

[0001] The invention belongs to the technical field of mold spraying, and in particular relates to a nozzle for spraying a substrate of a high-pressure casting machine. Background Art

[0002] High-pressure casting machine spraying is an important industrial technology, which involves spraying the coating evenly onto the surface of the mold cavity at high pressure to improve the surface quality and performance of high-pressure casting products. The principle of high-pressure casting machine spraying is mainly to use high-pressure spraying equipment to pressurize the coating and spray it through a special nozzle to form fine water mist particles, which are evenly attached to the surface of the mold cavity under the action of high-speed airflow. During the spraying process, the coating undergoes mixing, atomization and acceleration stages, and finally forms a uniform coating on the surface of the mold cavity, which is conducive to the demolding of high-pressure casting products.

[0003] The high-pressure casting machine spray nozzle is a key component in the high-pressure casting machine system, which is responsible for spraying the paint evenly and efficiently onto the surface of the mold cavity. The existing high-pressure casting machine spray substrates all use a multi-row nozzle method to spray and purge the mold dynamic and fixed molds. The main problems of this spraying and purging method are: the nozzle used for spraying paint is easy to clog, and after clogging, the nozzle paint is too small or does not spray, causing the product to stick to the mold or jam, affecting product quality and increasing abnormal downtime; because the mold opening position of the high-pressure casting machine cannot be adjusted (that is, the mold opening position is fixed), when spraying paint, the Y axis of the spray device will spray the dynamic and fixed molds back and forth or spray the dynamic mold first and then the fixed mold to meet the process spraying and purging requirements, resulting in the existing spray substrate nozzle spraying method. The spraying time is longer than the industry level, affecting the product beat and low production efficiency. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a nozzle for spraying a substrate of a high-pressure casting machine, which is used to solve the technical problems in the prior art that the nozzle is easily clogged and the spraying method affects the production efficiency.

[0005] To achieve the above objectives and other related objectives, the technical solution of the present invention is as follows:

[0006] A high pressure casting machine spraying substrate nozzle, comprising:

[0007] A nozzle fixing seat, inside of which a paint guide channel and an air guide channel are arranged;

[0008] An extended extension tube, the rear end of which is rotatably connected to the nozzle fixing seat through a universal adjustment ball and is communicated with the air guide channel;

[0009] A spray guide pipe is inserted into the elongated extension pipe and has a gap with the elongated extension pipe, and the rear end of the spray guide pipe is connected to the paint guide channel;

[0010] The atomizing head assembly is connected to the front end of the lengthened extension tube and has an atomizing mixing chamber for mixing and atomizing the paint and compressed air. The front end of the spray guide tube is connected to the atomizing mixing chamber.

[0011] Optionally, the paint guide channel is located in the middle of the nozzle fixing seat, at least two air guide channels are provided and are located around the paint guide channel, the front end of the nozzle fixing seat has a receiving groove, and each of the air guide channels is connected to the receiving groove.

[0012] Optionally, the universal adjustment ball is sleeved on the extended extension tube and is threadedly connected to the rear end of the extended extension tube, and the universal adjustment ball is rotatably located in the accommodating groove.

[0013] Optionally, a clamping piece is further included, which is sleeved on the extended extension tube and is threadedly connected to the front end of the nozzle fixing seat so that the universal adjustment ball is pressed into the nozzle fixing seat.

[0014] Optionally, the atomizing head assembly comprises a first nozzle component, a second nozzle component and a third nozzle component which are coaxially connected in sequence along a direction close to the elongated extension tube, and the atomizing mixing chamber is arranged in the first nozzle component.

[0015] Optionally, the front end of the third nozzle component is threadedly connected to the rear end of the first nozzle component, and the second nozzle component is clamped in the first nozzle component, and the rear end of the third nozzle component is threadedly connected to the front end of the extended extension tube.

[0016] Optionally, the front end of the spray guide tube is connected to the rear end of the second nozzle component, and the rear end of the spray guide tube is connected to the paint guide channel through a guide joint.

[0017] Optionally, the second nozzle component includes an end portion, a disc portion and a connecting portion connected in sequence, an axial paint channel is axially arranged inside the second nozzle component, the spray guide tube is connected to the connecting portion and communicated with the axial paint channel, a plurality of air holes are circumferentially arranged on the disc portion, and a radial paint channel connected with the axial paint channel is radially arranged on the end portion.

[0018] Optionally, an elbow is further included, and the elbow is used to connect between the two elongated extension tubes to change the angle between the two elongated extension tubes.

[0019] Optionally, both ends of the elbow have elbow parts with set angles, and the two elbow parts are respectively used for threaded connection with the two extended extension pipes.

[0020] As described above, the high pressure casting machine spraying substrate nozzle of the present invention has the following beneficial effects:

[0021] By setting a nozzle mounting seat, it is suitable for the existing spraying substrate control method and nozzle installation and fixation;

[0022] By setting extension tubes of different lengths to suit high-pressure casting machines with different mold opening distances, the Y-axis of the spraying device only needs one position to meet the requirements of spraying and purging the moving and fixed molds at the same time, which greatly reduces the spraying time, shortens the product process cycle, and improves production efficiency.

[0023] By setting up an atomizing head assembly, and isolating the paint and compressed air and transporting them to the atomizing mixing chamber of the atomizing head assembly for mixing and atomizing spraying, the paint is not easy to be blocked, and the atomization state of the paint is improved, so that the paint can be sprayed evenly and attached to the inner cavity of the mold, thereby improving the spraying efficiency, shortening the product process cycle, reducing the impact of mold sticking on the product surface, and improving product quality;

[0024] Furthermore, by setting elbows at different angles to meet the spraying requirements of the deep cavity of the mold, the mold change adjustment time is reduced, the impact of mold sticking in the deep cavity of the product is greatly reduced, and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure decomposition of a nozzle for spraying a substrate of a high-pressure casting machine according to an embodiment of the present invention;

[0026] Figure 2 This is a structural front view of a nozzle mounting seat according to an embodiment of the present invention;

[0027] Figure 3 A top view of the structure of a nozzle mounting seat according to an embodiment of the present invention;

[0028] Figure 4 A schematic structural diagram of a first nozzle component according to an embodiment of the present invention;

[0029] Figure 5 It is a structural front view of the second nozzle component of an embodiment of the present invention;

[0030] Figure 6 A bottom view of the structure of the second nozzle component according to an embodiment of the present invention;

[0031] Figure 7 It is a structural front view of the third nozzle component of the embodiment of the present invention;

[0032] Figure 8 It is a structural schematic diagram of an elbow according to an embodiment of the present invention;

[0033] Fig. 9 Schematic diagram of the elbow in the direction of A according to an embodiment of the present invention.

[0034] Description of Reference Numerals

[0035] 10-nozzle fixing seat; 11-paint guide channel; 12-air guide channel; 13-accommodating groove; 14-installation hole; 15-positioning hole;

[0036] 20-Extension tube; 30-Universal adjustment ball; 40-Spraying guide tube;

[0037] 50-atomizing head assembly;

[0038] 51-first nozzle component; 511-atomizing mixing chamber; 512-first through hole;

[0039] 52-second nozzle member; 521-end portion; 522-disc portion; 523-connecting portion; 524-axial coating passage; 525-radial coating passage; 526-air through hole;

[0040] 53-third nozzle member; 531-third through hole;

[0041] 60-pressing piece; 70-flow guide joint;

[0042] 80-elbow; 81-elbow part. DETAILED DESCRIPTION

[0043] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0044] It should be noted that the diagrams provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than drawing according to the number, shape and size of the components in the actual implementation. The form, quantity and proportion of each component in the actual implementation can be changed at will, and the component layout form may also be more complicated. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of the present specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0045] In order to describe the present invention in detail, the high pressure casting machine spray substrate nozzle of the present invention is specifically described below:

[0046] Please combine Figure 1 As shown, the present invention provides a high-pressure casting machine spray substrate nozzle, comprising: a nozzle fixing seat 10, an extended extension tube 20, a spray guide tube 40 and an atomizing head assembly 50, wherein the interior of the nozzle fixing seat 10 is provided with a paint guide channel 11 and an air guide channel 12; the rear end of the extended extension tube 20 is rotatably connected to the nozzle fixing seat 10 through a universal adjustment ball 30, and is connected to the air guide channel 12; the spray guide tube 40 is penetrated in the extended extension tube 20, and there is a gap between the extended extension tube 20, and the rear end of the spray guide tube 40 is connected to the paint guide channel 11; the atomizing head assembly 50 is connected to the front end of the extended extension tube 20, and has an atomizing mixing chamber 511 for mixing and atomizing paint and compressed air, and the front end of the spray guide tube 40 is connected to the atomizing mixing chamber 511.

[0047] Specifically, the nozzle fixing seat 10 is used for the control mode of the spraying substrate and the installation and fixation of the nozzle. The installation surface of the nozzle fixing seat 10 is connected to the spraying substrate, and the nozzle fixing seat 10 is provided with a paint guide channel 11 for introducing paint and an air guide channel 12 for introducing compressed air. The two are separated to ensure that the paint and compressed air can flow to the subsequent atomizing head assembly 50 separately and orderly, avoiding mutual interference between the two during the transmission process.

[0048] The paint is guided into the atomizing head assembly 50 through the spray guide tube 40, and the compressed air is guided into the atomizing head assembly 50 through the extended extension tube 20, so that the paint and the compressed air are independently transported to the atomizing mixing chamber 511 of the atomizing head assembly 50 for mixing, which is convenient for atomizing spraying, thereby making the paint less likely to be blocked, and improving the atomization state of the paint, so that the paint can be evenly sprayed and attached to the inner cavity of the mold, thereby improving the spraying efficiency, shortening the product process cycle, reducing the impact of mold sticking on the product surface, reducing abnormal downtime, and improving product quality.

[0049] In addition, the rear end of the extended extension tube 20 is rotatably connected to the nozzle fixing seat 10 through the universal adjustment ball 30, and the front end of the extended extension tube 20 is connected to the atomizing head assembly 50, so that the extended extension tube 20 and the spray guide tube 40 passing through it can be rotated to a certain angle under the action of the universal adjustment ball 30, so that the extended extension tube 20 can flexibly adjust the angle and position to adapt to spraying surfaces of different shapes and sizes, greatly enhancing the flexibility and adaptability of the spraying operation. By using extended extension tubes 20 of different lengths and specifications to suit high-pressure casting machines with different mold opening distances, the Y axis of the spraying device only needs one position to meet the process spraying and purging requirements of the moving and fixed molds during spraying, so as to greatly shorten the product process cycle and improve production efficiency.

[0050] See also Figure 2 and Figure 3In some embodiments, the paint guide channel 11 is located in the middle of the nozzle fixing seat 10, and at least two air guide channels 12 are provided and located around the paint guide channel 11. The front end of the nozzle fixing seat 10 has a receiving groove 13, and each of the air guide channels 12 is connected to the receiving groove 13. Specifically, a paint guide channel 11 is provided in the middle of the nozzle fixing seat 10 along its own axial direction for passing the paint. The front end of the paint guide channel 11 is connected to the spraying guide pipe 40 to guide the paint to the atomizing head assembly 50. The paint guide channel 11 in the middle position can more effectively utilize the space inside the nozzle fixing seat 10 and improve the transmission efficiency of the paint. At least two air guide channels 12 are provided on the mounting surface of the nozzle fixing seat 10 around the paint guide channel 11 for passing compressed air. This design provides more compressed air supply paths, ensuring that the compressed air can be evenly and fully delivered to the atomizing head assembly 50, providing sufficient power for the atomization of the paint. The air guide channel 12 extends along the axial direction of the nozzle fixing seat 10, and is connected to the receiving groove 13 along the radial direction of the nozzle fixing seat 10. In this embodiment, the two air guide channels 12 are symmetrically arranged relative to the paint guide channel 11. Each air guide channel 12 is connected to the receiving groove 13. This design ensures that the compressed air can flow out of each air guide channel 12 and enter the receiving groove 13 evenly, and then be transported to the atomizing head assembly 50 through the extended extension tube 20, providing a stable and sufficient compressed air supply for the atomization of the paint. The nozzle fixing seat 10 is provided with a mounting hole 14 diagonally along the upper edge, which is used to install the nozzle fixing seat 10 on the spraying substrate through a fastener (such as a bolt); the nozzle fixing seat 10 is also provided with a positioning hole 15, which is used to position the nozzle fixing seat 10 on the spraying substrate through a positioning member (such as a positioning pin).

[0051] In the above embodiment, the universal adjustment ball 30 is sleeved on the extended extension tube 20 and is threadedly connected to the rear end of the extended extension tube 20. The universal adjustment ball 30 is rotatably located in the receiving groove 13. Specifically, the rear end of the extended extension tube 20 is provided with an external thread, and the universal adjustment ball 30 is provided with an internal thread. The two threads cooperate to achieve the rapid connection and disassembly of the extended extension tube 20 and the universal adjustment ball 30. The receiving groove 13 at the front end of the nozzle fixing seat 10 is used to accommodate the universal adjustment ball 30, which is conducive to driving the extended extension tube 20 and the spray guide tube 40 to rotate together through the rotation of the universal adjustment ball 30. This design enables the extended extension tube 20 to be rotated and adjusted at multiple angles relative to the nozzle fixing seat 10, so as to adapt to spraying surfaces of different shapes and sizes.

[0052] See also Figure 1It can be understood that the high-pressure host spray substrate nozzle also includes a clamping member 60, which is sleeved on the extended extension tube 20 and is threadedly connected to the front end of the nozzle fixing seat 10, so that the universal adjustment ball 30 is pressed into the nozzle fixing seat 10. Specifically, the clamping member 60 is provided with an internal thread on the side facing the nozzle fixing seat 10, and the front end of the nozzle fixing seat 10 is provided with an external thread. The two threads cooperate to achieve a quick connection between the clamping member 60 and the nozzle fixing seat 10; the activity space of the universal adjustment ball 30 is jointly limited by the clamping member 60 and the accommodating groove 13, which effectively limits the shaking or displacement of the universal adjustment ball 30 and the extended extension tube 20 during the spraying process.

[0053] See also Figure 1 and Figure 4 In some embodiments, the atomizing head assembly 50 includes a first nozzle component 51, a second nozzle component 52, and a third nozzle component 53 which are coaxially connected in sequence along the direction close to the extended extension tube 20, and the atomizing mixing chamber 511 is arranged in the first nozzle component 51. Specifically, the front end of the first nozzle component 51 is provided with an atomizing mixing chamber 511, and the interior of the first nozzle component 51 is a hollow structure, having a through first through hole 512, and the first through hole 512 is connected to the atomizing mixing chamber 511, and the paint and compressed air are respectively introduced into the atomizing mixing chamber 511 for atomization and mixing, and then sprayed out from the front nozzle of the first nozzle component 51. Since the atomizing mixing chamber 511 is located in the first nozzle component 51, the paint and the compressed air are quickly mixed in a small space, so that the paint is effectively dispersed into tiny particles, forming fine and uniform paint droplets.

[0054] See also Figure 1 , Figures 4 to 7In the above embodiment, the front end of the third nozzle component 53 is threadedly connected to the rear end of the first nozzle component 51, and the second nozzle component 52 is clamped in the first nozzle component 51, and the rear end of the third nozzle component 53 is threadedly connected to the front end of the extended extension tube 20. Specifically, the interior of the third nozzle component 53 is a hollow structure, with a third through hole 531, and the third through hole 531 is connected to the extended extension tube 20. The front end of the third nozzle component 53 is provided with an external thread, and the rear end of the first nozzle component 51 is provided with an internal thread. The two threads cooperate, which is conducive to the rapid disassembly and assembly of the third nozzle component 53 and the first nozzle component 51; and the second nozzle component 52 can be firmly clamped in the first nozzle component 51. This clamping structure further enhances the overall stability of the atomizing head assembly 50 and avoids the problem of loosening or falling off due to vibration or external force during the spraying process. The rear end of the third nozzle component 53 is provided with an internal thread, and the front end of the extended extension tube 20 is provided with an external thread. The two threads cooperate to ensure a tight connection between the extended extension tube 20 and the atomizing head assembly 50, and also facilitate quick disassembly and assembly; moreover, it avoids leakage and loss of compressed air during transmission, ensuring the continuity and stability of the spraying operation.

[0055] See also Figure 1 In the above embodiment, the front end of the spray guide tube 40 is connected to the rear end of the second nozzle component 52, and the rear end of the spray guide tube 40 is connected to the paint guide channel 11 through the guide joint 70. Specifically, the guide joint 70 serves as a bridge connecting the spray guide tube 40 and the paint guide channel 11, ensuring the stability and continuity of the paint during the transmission process, and avoiding the paint from leaking or clogging and affecting the spraying effect. The front end of the spray guide tube 40 is connected to the rear end of the second nozzle component 52, ensuring that the paint can directly flow from the paint guide channel 11 through the guide joint 70 and the spray guide tube 40 into the second nozzle component 52 accurately, and then enter the atomization mixing chamber 511 of the first nozzle component 51 for atomization. This precise docking reduces the leakage and waste of paint during the transmission process and improves the utilization rate of the paint.

[0056] Continue reading Figure 5 and Figure 6In the above embodiment, the second nozzle component 52 includes an end portion 521, a disc portion 522 and a connecting portion 523 connected in sequence, and an axial paint channel 524 is axially arranged inside the second nozzle component 52. The spray guide tube 40 is connected to the connecting portion 523 and communicated with the axial paint channel 524. A plurality of air holes 526 are arranged circumferentially on the disc portion 522, and a radial paint channel 525 connected with the axial paint channel 524 is radially arranged on the end portion 521. Specifically, the axial paint channel 524 is located in the middle of the second nozzle component 52. The axial paint channel 524 ensures that the paint can flow smoothly and reduces the resistance of the paint during the transmission process. The radial paint channel 525 is connected to the front end of the axial paint channel 524, so that the paint can be evenly sprayed out from the radial paint channel 525; a plurality of air holes 526 are arranged circumferentially on the disc portion 522, and the outlets of the radial paint channels 525 correspond to each air hole 526, so that the compressed air can evenly enter the atomization mixing chamber 511 from the third nozzle component 53 through each air hole 526, and be mixed and atomized with the paint sprayed from the outlet of the radial paint channel 525; and a plurality of circumferentially arranged air holes 526 help to increase the contact area between the paint and the compressed air, improve the atomization effect, make the sprayed coating more delicate and uniform, and improve the spraying quality.

[0057] See also Figure 8 and Fig. 9 It should be noted that the high-pressure casting machine spray substrate nozzle also includes an elbow 80, which is used to connect between the two extended extension tubes 20 to change the angle between the two extended extension tubes 20. Specifically, the elbow 80 is an additional part. For the deep cavity part of the mold, the angle of the extended extension tube 20 can be greatly changed by adding an elbow 80 and setting two extended extension tubes 20. The introduction of the elbow 80 allows the angle between the two extended extension tubes 20 to be flexibly adjusted. This design enables the spray substrate nozzle to adapt to different spraying angles and position requirements, thereby improving the flexibility and adaptability of the spraying operation. By designing elbows 80 with different angles, the spraying requirements of the deep cavity part of the mold can be met, the mold change adjustment time can be reduced, the influence of the deep cavity sticking of the product can be greatly reduced, and the product quality can be improved.

[0058] See also Figure 8 and Fig. 9In some embodiments, the two ends of the elbow 80 have elbows 81 with set angles, and the two elbows 81 are respectively used to be threadedly connected with the two extended extension tubes 20. Specifically, the elbows 81 at both ends of the elbow 80 are provided with external threads, and match the internal threads of the extended extension tubes 20, so as to ensure the firmness and stability of the connection between the elbow 80 and the two extended extension tubes 20, and facilitate quick disassembly and assembly. The first end of the elbow 80 is connected to the first extended extension tube 20, and the first extended extension tube 20 is connected to the nozzle fixing seat 10 through the universal adjustment ball 30, and the second end of the elbow 80 is connected to the second extended extension tube 20, and the second extended extension tube 20 is connected to the atomizing head assembly 50. The angles of the elbows 81 at both ends of the elbow 80 can be designed according to actual needs to meet different working conditions and flexibly adapt to different spraying environments and spatial layouts.

[0059] To summarize, the high-pressure casting machine spray substrate nozzle provided by the present invention is suitable for high-pressure casting machines with different mold opening distances by setting extended extension tubes 20 of different lengths, so that the Y-axis of the spray device only needs one position to meet the process spraying and purging requirements of spraying the moving and fixed molds at the same time during spraying, so as to greatly shorten the product process cycle and improve production efficiency; by setting an atomizing head assembly 50, the paint and compressed air are isolated and transported to the front end atomizing mixing chamber 511 of the atomizing head assembly 50 for mixing and atomizing spraying, so that the paint is not easy to be blocked, and the atomization state of the paint is improved, so that the paint can be evenly sprayed and attached to the inner cavity of the mold, thereby improving the spraying efficiency, shortening the product process cycle, reducing the influence of mold sticking on the product surface, and improving the product quality; by setting elbows 80 of different angles, the spraying requirements of the deep cavity of the mold can be met, the mold change adjustment time can be reduced, the influence of mold sticking in the deep cavity of the product can be greatly reduced, and the product quality can be improved.

[0060] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A high pressure casting machine spray substrate nozzle, characterized in that: include: A nozzle fixing seat, inside of which a paint guide channel and an air guide channel are arranged; An extended extension tube, the rear end of which is rotatably connected to the nozzle fixing seat through a universal adjustment ball and is communicated with the air guide channel; A spray guide pipe is inserted into the elongated extension pipe and has a gap with the elongated extension pipe, and the rear end of the spray guide pipe is connected to the paint guide channel; The atomizing head assembly is connected to the front end of the lengthened extension tube and has an atomizing mixing chamber for mixing and atomizing the paint and compressed air. The front end of the spray guide tube is connected to the atomizing mixing chamber.

2. The high pressure casting machine spray substrate nozzle according to claim 1, characterized in that: The paint guide channel is located in the middle of the nozzle fixing seat, at least two air guide channels are provided and are located around the paint guide channel, the front end of the nozzle fixing seat has a receiving groove, and each of the air guide channels is connected to the receiving groove.

3. The high pressure casting machine spray substrate nozzle according to claim 2, characterized in that: The universal adjustment ball is sleeved on the lengthened extension tube and is threadedly connected to the rear end of the lengthened extension tube. The universal adjustment ball is rotatably located in the accommodating groove.

4. The high pressure casting machine spray substrate nozzle according to claim 1 or 3, characterized in that: It also includes a pressing piece, which is sleeved on the extended extension tube and is threadedly connected to the front end of the nozzle fixing seat so that the universal adjustment ball is pressed into the nozzle fixing seat.

5. The high pressure casting machine spray substrate nozzle according to claim 1, characterized in that: The atomizing head assembly comprises a first nozzle component, a second nozzle component and a third nozzle component which are coaxially connected in sequence along a direction close to the elongated extension tube, and the atomizing mixing chamber is arranged in the first nozzle component.

6. The high pressure casting machine spray substrate nozzle according to claim 5, characterized in that: The front end of the third nozzle component is threadedly connected to the rear end of the first nozzle component, and the second nozzle component is clamped in the first nozzle component. The rear end of the third nozzle component is threadedly connected to the front end of the extended extension tube.

7. The high pressure casting machine spray substrate nozzle according to claim 5, characterized in that: The front end of the spray guide tube is connected to the rear end of the second nozzle component, and the rear end of the spray guide tube is connected to the paint guide channel through a guide joint.

8. The high pressure casting machine spray substrate nozzle according to claim 7, characterized in that: The second nozzle component includes an end portion, a disc portion and a connecting portion connected in sequence, an axial paint channel is axially arranged inside the second nozzle component, the spray guide tube is connected to the connecting portion and communicated with the axial paint channel, a plurality of air holes are circumferentially arranged on the disc portion, and a radial paint channel connected with the axial paint channel is radially arranged on the end portion.

9. The high pressure casting machine spray substrate nozzle according to claim 1, characterized in that: It also includes an elbow, which is used to connect between the two elongated extension tubes to change the angle between the two elongated extension tubes.

10. The high pressure casting machine spray substrate nozzle according to claim 9, characterized in that: Both ends of the elbow are provided with elbow parts with set angles, and the two elbow parts are respectively used for threaded connection with the two extended extension pipes.

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