Laser pressure tuning assembly

Abstract

This application discloses a laser pressure regulating component, comprising a valve island and a gas regulating component. The valve island has gas channels, including a first gas channel, a second gas channel, and a mixing gas channel. One end of the mixing gas channel is connected to the first gas channel, and the other end is connected to the second gas channel. An outlet is provided on the mixing gas channel. The gas regulating component is respectively disposed on the first gas channel and the second gas channel. The valve island includes a first valve island and a second valve island, which are detachably connected. The gas regulating component includes a two-position two-way valve and a pressure proportional valve. The pressure proportional valve is located on the first valve island, and the two-position two-way valve is located on the second valve island. This application improves the ease of installation and disassembly of the laser pressure regulating component, while also optimizing the convenience of its refined transportation.

Description

Technical Field

[0001] This application relates to the field of pressure valve technology, and in particular to a laser pressure regulating component. Background Technology

[0002] Laser cutting equipment requires different auxiliary gases when cutting different materials. Common auxiliary gases include nitrogen and oxygen. Moreover, the required pressure and flow rate of the auxiliary gas vary depending on the thickness of the material being cut. If each gas is delivered through a separate pipeline, and each control valve is installed on the corresponding pipeline to control the gas circuit switching and check valve, this approach has disadvantages such as low integration, large size, and inconvenience in movement.

[0003] To address the aforementioned issues, existing technologies integrate multiple pipelines and control valves onto a valve island, achieving integrated management and facilitating the management of these pipelines and control valves. However, existing technologies still have some shortcomings. Because the valve island adopts an integrated design, the valve components are arranged linearly and tightly, meaning the valve body can only be assembled and disassembled in a linear sequence. Generally, the first valve component installed allows for comprehensive observation by the installer, has the most installation space, and achieves the highest installation and disassembly efficiency. Furthermore, the integrated valve island, once installed, is large and heavy, making transportation very inconvenient; it can only be transported in relatively fragmented valve bodies. Therefore, existing technologies still have room for further improvement. Utility Model Content

[0004] This application proposes a laser voltage regulation component, which aims to improve the ease of installation and disassembly of the laser voltage regulation component, while optimizing the convenience of its precision transportation.

[0005] Specifically, this laser pressure regulating assembly employs a valve island design, splitting it into a first valve island and a second valve island. This allows for the disassembly of the largest component, enabling the valves connected to both islands to be transported together without further disassembly, significantly facilitating the precise transport of the laser pressure regulating assembly. The installation and disassembly of the integrated valve islands are also more flexible. During installation, the valves on both islands can be assembled separately before reassembling the first and second valve islands. Similarly, during disassembly, both islands are disassembled first, followed by the removal of their respective components. This approach avoids linear installation and disassembly of the valves. The two-part design of the valve islands allows for installation and disassembly from any direction and space, effectively increasing the installation freedom of the laser pressure regulating assembly and thus optimizing its installation and disassembly efficiency.

[0006] The laser voltage regulation component provided in this application adopts the following technical solution:

[0007] A laser pressure regulating component includes a valve island and a gas regulating component. The valve island has gas channels, including a first gas channel, a second gas channel, and a mixing gas channel. One end of the mixing gas channel is connected to the first gas channel, and the other end is connected to the second gas channel. An outlet is provided on the mixing gas channel. The gas regulating component is respectively disposed on the first gas channel and the second gas channel. The valve island includes a first valve island and a second valve island, which are detachably connected. The gas regulating component includes a two-position two-way valve and a pressure proportional valve. The pressure proportional valve is located on the first valve island, and the two-position two-way valve is located on the second valve island.

[0008] By adopting the above technical solution, during installation, the workers first install the pressure proportional valve on the first valve island, then install the two-position two-way valve on the second valve island, and then connect the first and second valve islands. Since the workers can observe and extend the installation from all directions when installing the first valve on the valve island, installing the valve island in two parts is more efficient than linear installation on a single valve island. During disassembly, the workers first disassemble the first and second valve islands, and then disassemble the pressure proportional valve on the first valve island and the two-position two-way valve on the second valve island respectively. Similarly, the ability to observe and extend the installation from all directions is also more efficient. When the user needs to transport the laser pressure regulating component, the user can directly disassemble the first and second valve islands and then carefully store them separately, thereby reducing the disassembly steps and making transportation more convenient. Moreover, the more valves there are on the valve island, the more obvious the advantages of the laser pressure regulating component become.

[0009] Preferably, the valve island has a filter groove on the air passage, the filter groove contains a filter element, and the filter groove is located at the connection between the first valve island and the second valve island.

[0010] By adopting the above technical solution, the first valve island and the second valve island are separated, and users can conveniently open filter slots at the air passage of the first valve island or the second valve island, which facilitates the installation and replacement of filter elements and optimizes the ease of use of the laser pressure regulating component.

[0011] Preferably, the inner diameter of the filter groove is larger than the inner diameter of the air passage.

[0012] By adopting the above technical solution, since the filter element slows down the fluid rate, setting a filter groove with a larger inner diameter in the air passage can reduce the impact of the filter element on the fluid, ensure the stability of the fluid rate in the air passage, and facilitate the fine control of the fluid rate. In general, when the inner diameter of the filter groove is larger than the inner diameter of the air passage, not only is it inconvenient to open the filter groove, but it is also more difficult to install the filter element. By separating the first valve island and the second valve island, it is not only convenient to open the filter groove, but also convenient to install and replace the filter element.

[0013] Preferably, the pressure proportional valve is located near the air outlet, the pressure proportional valve includes a first pressure proportional valve and a second pressure proportional valve, the two-position two-way valve includes a first two-position two-way valve and a second two-position two-way valve, the first pressure proportional valve is connected to the first air passage, the second pressure proportional valve is connected to the second air passage, the first two-position two-way valve is connected to the first air passage, and the second two-position two-way valve is connected to the second air passage.

[0014] By adopting the above technical solution, after the gas enters the first gas passage, it passes through the first two-position two-way valve and then returns to the first gas passage. Then it passes through the first pressure proportional valve and returns to the first gas passage again, and finally enters the mixing gas passage. At the same time, another wave of gas also enters the second gas passage, the second two-position two-way valve, the second gas passage, the second pressure proportional valve, the second gas passage, and the mixing gas passage in sequence. Then the two waves of mixed gas are discharged from the outlet. In this way, the mixing ratio and discharge rate of the two waves of gas can be finely adjusted by the two-position two-way valve and the pressure proportional valve.

[0015] Preferably, the pressure proportional valve has a valve inlet and a valve outlet, both of which face downwards, and the air passage is connected to the valve inlet and the valve outlet.

[0016] By adopting the above technical solution, the air passage is connected to the pressure proportional valve. The fluid enters the valve inlet through the air passage, and then the fluid is regulated by the pressure proportional valve. The regulated fluid then enters the air passage from the valve outlet. By placing the valve inlet and outlet at the bottom, the difficulty of connecting the valve island with the valve inlet and outlet on both sides of the existing pressure proportional valve is reduced. It also helps to reduce the volume of the valve island, so that the flat valve island can complete its connection with the pressure proportional valve. This further improves the convenience of precise transportation of the laser pressure regulating component. At the same time, the valve inlet and outlet can be directly opened at the lower end of the commonly used pressure proportional valve components in the existing technology, which helps to save costs.

[0017] Preferably, a groove is provided on the upper side of the first valve island, the groove cooperates with the pressure proportional valve, and an air port is provided on the groove to communicate with the air passage, the air port being connected to the valve inlet and the valve outlet respectively.

[0018] By adopting the above technical solution, the pressure proportional valve can be quickly positioned and limited by the groove. Furthermore, by bringing the center of gravity of the pressure proportional valve closer to the center of gravity of the first valve island, the connection between the first valve island and the pressure proportional valve is enhanced.

[0019] The distance between the upper parts of the valve inlet and the valve outlet is less than the distance between their lower parts.

[0020] By adopting the above technical solution, when the pressure proportional valve uses common valve components in the existing technology, it is necessary to block the original air inlet and air outlet on both sides of the valve component. Therefore, when opening the valve air inlet and valve air outlet on the lower side of the valve component, it is necessary to avoid this. Therefore, the upper part of the valve air inlet and valve air outlet needs to bend inward to ensure that the air inlet and air outlet have sufficient wall thickness.

[0021] Preferably, the horizontal height of the mixing airway is greater than the horizontal height of the first airway; the horizontal height of the second airway is equal to the horizontal height of the first airway.

[0022] By adopting the above technical solution, this setting not only facilitates the installation of the one-way valve, ensuring that after the one-way valve is installed in the first and second air passages, the fluid can quickly enter the mixing air passage after pushing the one-way valve, but also facilitates the fluid to fill the first and second air passages before entering the mixing air passage, which is beneficial for expelling the initial irrelevant gas and ensuring the accuracy of the subsequent gas ratio between the two.

[0023] Preferably, both the first airway and the second airway are provided with a one-way valve at one end near the mixing airway.

[0024] By adopting the above technical solution, the gas in the first air passage can only enter the mixing air passage from the inlet end, preventing fluid backflow and ensuring the ratio of the two gases after mixing.

[0025] Preferably, an air outlet connector is rotatably connected to the air outlet; and an air inlet connector is rotatably connected to the end of the first air passage and the second air passage away from the mixing air passage.

[0026] By adopting the above technical solution, both the air inlet connector and the air outlet connector can rotate, which not only allows the air inlet connector and the air outlet connector to allow fluid to pass through at multiple angles, but also facilitates the unfolding when in use and the storage when not in use. This facilitates the fine transportation of the laser pressure regulating component after storage, and allows the air inlet connector and the air outlet connector to be stored and transported without disassembly.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During installation, the workers first install the pressure proportional valve on the first valve island, then install the two-position two-way valve on the second valve island, and then connect the first and second valve islands. Because the workers can observe and extend the installation from all directions when installing the first valve on the valve island, installing the valve island in two parts is more efficient than linear installation on a single valve island. During disassembly, the workers first disassemble the first and second valve islands, and then disassemble the pressure proportional valve on the first valve island and the two-position two-way valve on the second valve island respectively. Similarly, observation and extension of the installation from all directions are more efficient. When the user needs to transport the laser pressure regulating component, the user can directly disassemble the first and second valve islands and then carefully store them separately, thereby reducing the disassembly steps and making transportation more convenient. The more valves there are on the valve island, the more obvious the advantages of the laser pressure regulating component become.

[0029] 2. Since the filter element slows down the fluid rate, setting a filter groove with a larger inner diameter in the air passage can reduce the impact of the filter element on the fluid, ensure the stability of the fluid rate in the air passage, and facilitate the fine control of the fluid rate. In general, when the inner diameter of the filter groove is larger than the inner diameter of the air passage, not only is it inconvenient to open the filter groove, but it is also more difficult to install the filter element. By separating the first valve island and the second valve island, it is not only convenient to open the filter groove, but also convenient to install and replace the filter element.

[0030] 3. Both the air inlet and outlet connectors can rotate, which not only allows fluid to pass through at multiple angles, but also facilitates deployment when in use and storage when not in use. This makes it easier to transport the laser pressure regulating component after storage, allowing the air inlet and outlet connectors to be stored and transported without disassembly. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the laser voltage regulation component in this embodiment;

[0032] Figure 2 This is a left view of the laser voltage modulation component in this embodiment;

[0033] Figure 3 for Figure 2 A cross-sectional view along the direction shown in A-A;

[0034] Figure 4 for Figure 2 A cross-sectional view along the direction shown by B-B;

[0035] Figure 5 This is a front view of the laser voltage regulation component in this embodiment;

[0036] Figure 6 for Figure 5A cross-sectional view along the direction shown in C-C.

[0037] Reference numerals: 1. Valve island; 11. First air passage; 111. First air passage section 1; 112. First air passage section 2; 113. First air passage section 3; 114. First air passage section 4; 12. Second air passage; 13. Mixing air passage; 14. First valve island; 141. Groove; 142. Air port; 15. Second valve island; 151. Valve groove; 16. Filter groove; 17. One-way valve; 2. Gas regulating assembly; 21. Pressure proportional valve; 211. First pressure proportional valve; 212. Second pressure proportional valve; 213. Valve inlet; 214. Valve outlet; 22. Two-position two-way valve; 221. First two-position two-way valve; 222. Second two-position two-way valve; 3. Outlet connection; 4. Inlet connection. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0039] This application discloses a laser voltage regulation component.

[0040] Reference Figure 1-6 It includes a valve island 1 and a gas regulating component 2. The valve island 1 has a gas passage, and the gas regulating component 2 is located on the valve island 1 and is connected to the gas passage.

[0041] Valve island 1 includes a first valve island 14 and a second valve island 15. The right end of the first valve island 14 is bolted to the left end of the second valve island 15. The air passage includes a first air passage 11, a second air passage 12 and a mixing air passage 13. The mixing air passage 13 is located at the left end of the first valve island 14 and has an air outlet in the middle. The first air passage 11 and the second air passage 12 are arranged perpendicularly to the mixing air passage 13. One end of the first air passage 11 is connected to the front end of the mixing air passage 13 and the other end is the first air inlet. One end of the second air passage 12 is connected to the rear end of the mixing air passage 13 and the other end is the second air inlet. Both the first air passage 11 and the second air passage 12 are partially located on the first valve island 14 and partially located on the second valve island 15. The first air passage 11 and the second air passage 12 are non-connecting channels. The gas regulating component 2 forms a connecting channel for fluid passage with the first air passage 11 and the second air passage 12 respectively.

[0042] The upper side of the first valve island 14 is symmetrically provided with grooves 141, namely the first groove and the second groove. Two air ports 142 are laterally provided on both the first and second grooves. The upper side of the second valve island 15 is symmetrically provided with valve slots 151, including the first valve slot and the second valve slot. The gas regulating assembly 2 includes a first pressure proportional valve 211, a second pressure proportional valve 212, a first two-position two-way valve 221, and a second two-position two-way valve 222. The first pressure proportional valve 211 is located in the first groove, and its lower end engages with the first groove. The second pressure proportional valve 212 is located in the second groove and is engaged with the second groove. The first valve island 14 is bolted to the first pressure proportional valve 211 and the second pressure proportional valve 212. The lower ends of the first pressure proportional valve 211 and the second pressure proportional valve 212 are both equipped with a valve inlet 213 and a valve outlet 214. The valve inlet 213 and the valve outlet 214 open downwards and are respectively connected to two air ports 142. The first two-position two-way valve 221 is sealed and inserted into the first valve groove, and the second two-position two-way valve 222 is sealed and inserted into the second valve groove.

[0043] The first air passage 11 includes a first air passage section 111, a first air passage section 112, a first air passage section 113, and a first air passage section 114. The first air passage section 111 and the first air passage section 112 are located on the second valve island 15, while the first air passage section 113 and the first air passage section 114 are located on the first valve island 14. One end of the first air passage section 111 is the first air inlet, and the other end is connected to the first valve groove. One end of the first air passage section 112 is connected to the first valve groove, and the other end is located at the end of the first valve island 14 furthest from the first air inlet. One end of the first air passage section 113 is connected to the first air passage section 112. One end is connected to the air port 142 of the first groove, and the other air port 142 of the first groove is connected to one end of the first air passage section 114. The other end of the first air passage section 114 is connected to the mixing air passage 13. Similarly, the second air passage 12 includes the second air passage section 1, the second air passage section 2, the second air passage section 3, and the second air passage section 4. After the fluid enters the second air passage 12 from the second air inlet, it passes through the second air passage section 1, the second valve groove, the second air passage section 2, the second air passage section 3, the air port 142 of the second groove, the second pressure proportional valve 212, the other air port 142 of the second groove, the second air passage section 4, the mixing air passage 13, and the air outlet in sequence.

[0044] During installation, the workers first install the pressure proportional valve 21 on the first valve island 14, then install the two-position two-way valve 22 on the second valve island 15. The first valve island 14 and the second valve island 15 are then connected. Because installing the first valve on valve island 1 allows for comprehensive observation and spatial expansion, installing valve island 1 in two parts is more efficient than linear installation on a single valve island 1. During disassembly, the workers first separate the first valve island 14 from the second valve island 15, then disassemble the pressure proportional valve 21 on the first valve island 14 and the two-position two-way valve 22 on the second valve island 15. Similarly, comprehensive observation and spatial expansion during disassembly are also more efficient. When the user needs to transport the laser pressure regulating component, the user can directly disassemble the first valve island 14 and the second valve island 15, then carefully store them separately, reducing the number of valve disassembly steps and making transportation more convenient. Furthermore, the more valves are on valve island 1, the more obvious the advantages of the laser pressure regulating component become. In the specific ventilation process of the laser pressure regulating component, after the gas enters the first gas channel 11, it passes through the first two-position two-way valve 221 and then returns to the first gas channel 11. It then passes through the first pressure proportional valve 211 and returns to the first gas channel 11 again, finally entering the mixing gas channel 13. Simultaneously, another wave of gas sequentially enters the second gas channel 12, the second two-position two-way valve 222, the second gas channel 12, the second pressure proportional valve 212, and the mixing gas channel 13. The flow rate and volume of the two waves of gas are regulated by the two-position two-way valve 22 and the pressure proportional valve 21, respectively. After mixing in the mixing gas channel 13 at a certain ratio, the two waves of gas are discharged from the outlet. In this way, the mixing ratio and discharge rate of the two gases can be precisely adjusted through the two-position two-way valve 22 and the pressure proportional valve 21. Furthermore, the lower placement of the valve inlet 213 and valve outlet 214 reduces the difficulty of connecting the valve island 1 to the valve inlet 213 and valve outlet 214 on both sides of the existing pressure proportional valve 21. This also helps to reduce the volume of the valve island 1, allowing the flatter valve island 1 to connect with the pressure proportional valve 21, further improving the convenience of precise transportation of the laser pressure regulating component. Simultaneously, the valve inlet 213 and valve outlet 214 can be directly opened at the lower end of the commonly used pressure proportional valve 21, saving costs. The groove 141 allows for quick positioning and limiting of the pressure proportional valve 21. It also brings the center of gravity of the pressure proportional valve 21 closer to the center of gravity of the first valve island 14, thereby enhancing the connection stability between the first valve island 14 and the pressure proportional valve 21.

[0045] Furthermore, in this embodiment, the valve island 1 has a filter groove 16 at the third section of the second air passage and the fourth section of the second air passage. The filter groove 16 is provided with a filter element. By setting the position of the filter groove 16 at the detachable connection between the first valve island 14 and the second valve island 15, the user can not only conveniently open the filter groove 16 through the detachable connection between the first valve island 14 and the second valve island 15, but also facilitate the installation and replacement of the filter element, thus optimizing the convenience of using the laser pressure regulating component.

[0046] Furthermore, in this embodiment, the inner diameter of the filter groove 16 is larger than the inner diameter of the air passage. Since the filter element slows down the fluid rate, setting a filter groove 16 with a larger inner diameter in the air passage can reduce the influence of the filter element on the fluid, ensure the stability of the fluid rate in the air passage, and facilitate the fine control of the fluid rate. In general, when the inner diameter of the filter groove 16 is larger than the air passage, not only is it inconvenient to open the filter groove 16, but it is also more difficult to install the filter element. By separating the first valve island 14 and the second valve island 15, it is not only convenient to open the filter groove 16, but also convenient to install and replace the filter element.

[0047] Furthermore, in this embodiment, the distance between the upper parts of the valve inlet 213 and the valve outlet 214 is smaller than the distance between their lower parts.

[0048] When the pressure proportional valve 21 adopts common valve components in the existing technology, it is beneficial to reduce the mold opening cost and make full use of the original valve components, which is beneficial to reduce the production cost. However, common valve components in the existing technology need to block the original air inlet and air outlet on both sides of the valve component. Therefore, when opening the valve inlet 213 and valve outlet 214 on the lower side of the valve component, it is necessary to avoid this. Therefore, the upper part of the valve inlet 213 and valve outlet 214 needs to bend inward to ensure that the air inlet and air outlet have sufficient wall thickness.

[0049] Furthermore, in this embodiment, both the first air passage 11 and the second air passage 12 are bolted with one-way valves 17 at one end near the mixing air passage 13, so that the gas in the first air passage 11 and the second air passage 12 can only enter the mixing air passage 13 from the first air passage 11 and the second air passage 12, and cannot flow back from the mixing air passage 13 to the first air passage 11 and the second air passage 12. In this way, fluid backflow is prevented, the ratio of the two gases after mixing is guaranteed, and the gas in the first air passage 11 and the second air passage 12 is not contaminated.

[0050] Furthermore, in this embodiment, the horizontal height of the mixing air passage 13 is greater than the horizontal height of the first air passage 11, and the horizontal height of the second air passage 12 is equal to the horizontal height of the first air passage 11. This arrangement not only facilitates the installation of the one-way valve 17, ensuring that after the one-way valve 17 is installed in the first air passage 11 and the second air passage 12, the fluid can quickly enter the mixing air passage 13 after pushing the one-way valve 17, but also facilitates the fluid to fill the first air passage 11 and the second air passage 12 before entering the mixing air passage 13, which is beneficial for expelling the initial irrelevant gas and ensuring the accuracy of the ratio of the two gases in the subsequent process.

[0051] Furthermore, in this embodiment, the horizontal height of the mixing channel 13 is greater than the horizontal height of the outlet.

[0052] Furthermore, in this embodiment, an air outlet connector 3 is rotatably connected to the air outlet; an air inlet connector 4 is rotatably connected to the first air passage 11 and the second air passage 12 at the end away from the mixing air passage 13. Both the air inlet connector 4 and the air outlet connector 3 can rotate, which not only allows the air inlet connector 4 and the air outlet connector 3 to allow fluid to pass through at multiple angles, but also facilitates the unfolding when in use and the storage when not in use. This facilitates the fine transportation of the laser pressure regulating component after storage, so that the air inlet connector 4 and the air outlet connector 3 can be stored and transported without disassembly.

[0053] Furthermore, in this embodiment, the present invention does not impose any particular restrictions on the number and connection form of the air passages and air outlets. Any air passage structure and number that can achieve fine mixing function of mixing multiple gases, which is well known to those skilled in the art, can be used. Those skilled in the art can select and adjust according to specific application conditions, raw material conditions and product requirements.

[0054] Furthermore, in this embodiment, the present invention does not impose any particular limitation on the specific number of valve islands 1. Any number of valve islands 1 that are known to those skilled in the art and can achieve detachable connection and convenient transportation of valve islands 1 is acceptable. Those skilled in the art can select and adjust the number of valve islands 1 according to the specific application, raw material conditions and product requirements.

[0055] Furthermore, in this embodiment, the present invention does not particularly limit the form of detachable connection between the first valve island 14 and the second valve island 15. Any connection method known to those skilled in the art that can achieve detachable connection between the first valve island 14 and the second valve island 15 can be used. Those skilled in the art can select and adjust according to specific application conditions, raw material conditions and product requirements. It can be common plug-in connection, bolt connection, snap-fit ​​connection and other methods in the prior art.

[0056] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laser voltage modulation component, characterized in that: It includes a valve island (1) and a gas regulating component (2). The valve island (1) has an air passage, which includes a first air passage (11), a second air passage (12) and a mixing air passage (13). One end of the mixing air passage (13) is connected to the first air passage (11) and the other end is connected to the second air passage (12). The mixing air passage (13) has an air outlet. The gas regulating component (2) is respectively installed on the first air passage (11) and the second air passage (12). The valve island (1) includes a first valve island (14) and a second valve island (15), the first valve island (14) and the second valve island (15) are detachably connected, the gas regulating assembly (2) includes a two-position two-way valve (22) and a pressure proportional valve (21), the pressure proportional valve (21) is located on the first valve island (14), and the two-position two-way valve (22) is located on the second valve island (15).

2. The laser voltage modulation assembly according to claim 1, characterized in that: The valve island (1) has a filter groove (16) on the air passage, and a filter element is provided in the filter groove (16). The filter groove (16) is located at the connection between the first valve island (14) and the second valve island (15).

3. The laser voltage modulation assembly according to claim 2, characterized in that: The inner diameter of the filter tank (16) is larger than the inner diameter of the air passage.

4. The laser voltage modulation assembly according to claim 1, characterized in that: The pressure proportional valve (21) is located near the air outlet. The pressure proportional valve (21) includes a first pressure proportional valve (211) and a second pressure proportional valve (212). The two-position two-way valve (22) includes a first two-position two-way valve (221) and a second two-position two-way valve (222). The first pressure proportional valve (211) is connected to the first air passage (11), and the second pressure proportional valve (212) is connected to the second air passage (12). The first two-position two-way valve (221) is connected to the first air passage (11), and the second two-position two-way valve (222) is connected to the second air passage (12).

5. The laser voltage modulation assembly according to claim 1, characterized in that: The pressure proportional valve (21) has a valve inlet (213) and a valve outlet (214). The openings of the valve inlet (213) and the valve outlet (214) are both downward, and the air passage is connected to the valve inlet (213) and the valve outlet (214).

6. The laser voltage modulation assembly according to claim 5, characterized in that: The first valve island (14) has a groove (141) on its upper side. The groove (141) is engaged with the pressure proportional valve (21). The groove (141) has an air port (142) that communicates with the air passage. The air port (142) is connected to the valve inlet (213) and the valve outlet (214) respectively.

7. The laser voltage modulation assembly according to claim 5, characterized in that: The distance between the upper parts of the valve inlet (213) and the valve outlet (214) is less than the distance between their lower parts.

8. The laser voltage modulation assembly according to claim 1, characterized in that: The horizontal height of the mixed airway (13) is greater than the horizontal height of the first airway (11); the horizontal height of the second airway (12) is equal to the horizontal height of the first airway (11).

9. The laser voltage modulation assembly according to claim 1, characterized in that: Both the first airway (11) and the second airway (12) are provided with a one-way valve (17) at one end near the mixing airway (13).

10. The laser voltage modulation assembly according to claim 1, characterized in that: An air outlet connector (3) is rotatably connected to the air outlet; an air inlet connector (4) is rotatably connected to the first air passage (11) and the second air passage (12) at the end away from the mixing air passage (13).

Images