Medium fluid control valve for medium-power laser fine micromachining

Abstract

The utility model provides a medium fluid control valve for medium-power laser fine micromachining, which is characterized in that a nitrogen channel and a left gas inlet channel arranged on a base are communicated with a diaphragm arranged on the upper surface of the base so as to control the gas feeding and stopping actions of nitrogen; an oxygen channel and a right air inlet channel which are formed in the base are communicated with a switch valve mounted on the upper surface of the base so as to control the ventilation and cutoff actions of oxygen; a right air inlet channel and an exhaust channel are formed in the base; the right air outlet channel is communicated with a proportional valve mounted on the upper surface of the base; the left air inlet channel and the right air outlet channel are communicated in the base through a transition channel, and a movable sealing piece formed by embedding a plug into an inner hole of the guide sleeve is arranged in the transition channel in a sliding mode so as to plug the left air inlet channel or the right air outlet channel to achieve the shuttle valve function; the transition channel is communicated with a shuttle valve structure air outlet formed in the base. And multiple valves are integrally installed, so that the compactness of the valve group is improved, interfaces are reduced, and the possibility of leakage is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas regulation of laser equipment, and in particular relates to a medium fluid control valve for medium-power laser fine micromachining. Background Art

[0002] As an important technology in modern manufacturing, laser technology has advantages that traditional processing methods do not have, such as high efficiency, low energy consumption and low cost. With the continuous advancement of laser technology and laser processing application technology, laser processing technology is gradually replacing traditional mechanical processing methods in many fields. Laser fine micro-machining technology has gradually become the core processing technology in the field of high-end manufacturing due to its higher precision, stronger flexibility, smaller thermal effect and wider applicability. In laser fine micro-machining, medium-power laser equipment adjusts the oxygen output through a proportional valve to ensure the quality of cutting thick plates. At the same time, the other nitrogen does not need to be adjusted and can be used to cut stainless steel plates. The gas regulating valve groups currently used in the market are all connected by pipes, which not only take up a large space, but also have many threaded interfaces and are prone to leakage. Utility Model Content

[0003] In order to reduce the installation space of the low-power gas regulating valve group and improve the application stability of the product, the utility model provides a medium fluid control valve for medium-power laser fine micromachining. Through an integrated base, the switch valve, diaphragm valve, shuttle valve and proportional valve are integrated into the same base, which improves the compactness of the valve group, reduces the interface, greatly reduces the possibility of leakage, and thus improves the application stability of the product.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A medium fluid control valve for medium-power laser fine micromachining is provided on a base with a nitrogen channel, a left air inlet, an oxygen channel, a right air inlet, an exhaust channel, a right air outlet and a shuttle valve structure outlet; wherein the nitrogen channel and the left air inlet are connected with a diaphragm valve installed on the upper surface of the base to control the ventilation and air cut-off of nitrogen; the oxygen channel and the right air inlet are connected with a switch valve installed on the upper surface of the base to control the ventilation and air cut-off of oxygen; the right air inlet is correspondingly connected with the air inlet of a proportional valve installed on the upper surface of the base, the exhaust channel is correspondingly connected with the exhaust port of the proportional valve, and the right air outlet is correspondingly connected with the air outlet of the proportional valve; the left air inlet and the right air outlet are connected through a transition channel inside the base, and a dynamic seal is slidably provided in the transition channel to block the left air inlet or the right air outlet so as to realize the shuttle valve function; the dynamic seal is composed of a plug embedded in the inner hole of a guide sleeve, and the above transition channel is connected with the air outlet of the shuttle valve structure.

[0006] Furthermore, a first rectangular sealing ring is provided between the exhaust channel and the exhaust port of the proportional valve; a second rectangular sealing ring is provided between the right air inlet channel and the air inlet of the proportional valve; and a third rectangular sealing ring is provided between the right air outlet channel and the air outlet of the proportional valve.

[0007] Furthermore, an O-ring a is positioned and installed in the left air inlet passage through a positioning sleeve a; an O-ring b is positioned and installed in the right air outlet passage through a positioning sleeve b; and the sliding range of the dynamic seal is between the O-ring a and the O-ring b.

[0008] Furthermore, the positioning sleeve a is fixed to the base via a retaining ring a, and the positioning sleeve b is fixed to the base via a retaining ring b.

[0009] Furthermore, the exhaust passage is connected to a mounting hole on the side of the base, and a muffler is installed in the mounting hole.

[0010] Furthermore, a screw plug is installed at each of the multiple process holes on the side wall of the base for opening each air channel to seal the process holes.

[0011] The beneficial effects of the utility model include:

[0012] The valve group integrates the proportional valve, switch valve, and diaphragm valve flow passages in one valve block through a compact and staggered flow passage design, which improves the integration, simplifies the installation steps, and reduces the use of components such as pipelines and adapters. The high degree of integration reduces the space requirements. The valve block integrates the function of the shuttle valve, and its structure is compact and simple, durable, and easy to assemble. The dynamic seal formed by plugging and embedding the inner hole of the guide sleeve can provide higher sealing performance and longer service life for medium-power laser equipment. The overall device has a simple and reliable structure, is easy to maintain and debug, reduces the installation space, improves the stability of the gas supply, and reduces the cost of manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top view of the overall structure of the utility model;

[0014] Figure 2 It is a side view of the overall structure of the utility model;

[0015] Figure 3 It is a cross-sectional view of the first position of the utility model;

[0016] Figure 4 It is a cross-sectional view of the second position of the utility model;

[0017] Figure 5 It is a cross-sectional view of the third position of the utility model.

[0018] In the figure: 1, proportional valve; 2, diaphragm valve; 3, switch valve; 4.1, base; 4.2, muffler; 4.3, first rectangular sealing ring; 4.4, second rectangular sealing ring; 4.5, third rectangular sealing ring; 4.6, screw plug a; 4.7, retaining ring a; 4.8, guide sleeve; 4.9, plugging; 4.10, retaining ring b; 4.11, screw plug b; 4.12, positioning sleeve b; 4.13, O-ring b; 4.14, O-ring a; 4.15, positioning sleeve a.

[0019] A.1, nitrogen channel; A.2, left air inlet; B.1, oxygen channel; B.2, right air inlet; C.1, exhaust channel; D.1, right air outlet; E.1, shuttle valve structure outlet. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "first", "second", "third", "a", "b", etc. are only used to distinguish components and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Embodiment 1:

[0023] A medium fluid control valve for medium power laser fine micromachining, reference Figure 1 The proportional valve 1 is fixedly mounted on the front of the upper surface of the base 4.1 by screws, and the diaphragm valve 2 and the switch valve 3 are installed in parallel on the rear of the upper surface of the base 4.1. In medium-power laser equipment, the regulation accuracy of gas flow and pressure is higher, and more precise control is required. The combination of diaphragm valve, switch valve and proportional valve can achieve more precise regulation and higher stability.

[0024] The base 4.1 is provided with a nitrogen channel A.1, a left air inlet channel A.2, an oxygen channel B.1, a right air inlet channel B.2, an exhaust channel C.1, a right air outlet channel D.1 and a shuttle valve structure air outlet E.1;

[0025] The nitrogen channel A.1 and the left air inlet A.2 pass through the diaphragm valve 2 to realize the ventilation and air cut-off of nitrogen. The oxygen channel B.1 and the right air inlet B.2 pass through the switch valve 3 to realize the ventilation and air cut-off of oxygen.

[0026] The exhaust channel C.1 is connected to the mounting hole on the side of the base 4.1, and the muffler 4.2 is installed in the mounting hole on the side of the base 4.1 for exhaust and silencing; the exhaust channel C.1 is correspondingly connected to the exhaust port of the proportional valve 1, and the first rectangular sealing ring 4.3 is used to seal the exhaust port of the proportional valve 1 and the exhaust channel C.1 of the base 4.2; the right side air inlet channel B.2 is correspondingly connected to the air inlet of the proportional valve 1, and the second rectangular sealing ring 4.4 is used to seal the air inlet of the proportional valve 1 and the right side air inlet channel B.2 of the base 4.2; the right side air outlet channel D.1 is correspondingly connected to the air outlet of the proportional valve 1, and the third rectangular sealing ring 4.5 is used to seal the air outlet of the proportional valve 1 and the right side air outlet channel D.1 of the base 4.2.

[0027] The O-ring a4.14 is positioned at the air inlet A.2 on the left side of the base 4.1 through the positioning sleeve a4.15, and is fixed to the base 4.1 with a retaining ring a4.7; the O-ring b4.13 is positioned at the air outlet D.1 on the right side of the base 4.1 through the positioning sleeve b4.12, and is fixed to the base 4.1 with a retaining ring b4.10; the air inlet A.2 on the left side is connected to the air outlet D.1 on the right side through a transition channel inside the base 4.1, and the dynamic seal slides in the transition channel, and the sliding range is between the O-ring a4.14 and the O-ring b4.13. This part of the structure realizes the shuttle valve function. The dynamic seal is composed of a plug 4.9 embedded in the inner hole of the guide sleeve 4.8. In the gas regulating valve group of the medium-power laser equipment, due to the increase in power and pressure, a more durable sealing solution is required. Therefore, the dynamic seal composed of a plug embedded in the inner hole of the guide sleeve can provide higher sealing performance and longer service life. The screw plug a4.6 and the screw plug b4.11 respectively seal the process holes on the two sides of the base 4.1.

[0028] The operating principle of the medium fluid control valve is as follows:

[0029] Nitrogen and oxygen control:

[0030] Diaphragm valve 2 controls the ventilation and air cutoff of nitrogen channel A.1 and left air inlet A.2. When nitrogen needs to be introduced, diaphragm valve 2 opens to allow nitrogen to enter left air inlet A.2 from nitrogen channel A.1. When nitrogen needs to be cut off, diaphragm valve 2 closes to prevent nitrogen from entering.

[0031] The switch valve 3 controls the ventilation and shutoff of the oxygen channel B.1 and the right air intake channel B.2. When oxygen needs to be introduced, the switch valve 3 is opened to allow oxygen to enter the right air intake channel B.2 from the oxygen channel B.1. When oxygen needs to be shut off, the switch valve 3 is closed to prevent oxygen from entering.

[0032] Shuttle valve structure and dynamic seal action:

[0033] The dynamic seal sliding in the transition channel plays the function of a shuttle valve, and the guide sleeve 4.8 drives the plug 4.9 to plug the left air inlet channel A.2 or the right air outlet channel D.1 as required.

[0034] When the diaphragm valve 2 is opened and the switch valve 3 is closed, nitrogen flows from the nitrogen channel A.1 into the left air inlet channel A.2, and from the left air inlet channel A.2 into the transition channel, and the dynamic seal is blocked at the position of the right air outlet channel D.1, thereby allowing nitrogen to flow out through the transition channel and the shuttle valve structure outlet E.1.

[0035] When the diaphragm valve 2 is closed, the switch valve 3 is opened, and the proportional valve 1 is given an input signal, oxygen flows from the oxygen channel B.1 into the right air inlet duct B.2, and flows from the right air inlet duct B.2 into the right air outlet channel D.1 through the control of the proportional valve 1, and flows from the right air outlet channel D.1 into the transition channel, and the dynamic seal is blocked at the position of the left air inlet duct A.2, thereby allowing oxygen to flow out through the transition channel and the shuttle valve structure outlet E.1.

[0036] Adjustment of proportional valve:

[0037] The proportional valve is connected to the right air intake duct, the exhaust duct and the right air outlet duct to adjust the flow and direction of oxygen as needed. When oxygen flows in through the right air intake duct, the proportional valve controls whether the oxygen enters the right air outlet duct or the exhaust duct, thereby achieving precise control of the oxygen flow.

[0038] Diaphragm valves and switch valves allow the selection of ventilation or gas cut-off as needed, thereby controlling the supply of nitrogen and oxygen. Proportional valves provide precise control of gas flow. The gas flow can be precisely adjusted by adjusting the input signal of the proportional valve to meet the precise requirements of medium-power laser equipment for gas supply. The shuttle valve function is realized through the design of the dynamic seal in the transition channel, thereby achieving rapid switching and flow distribution of gas. The design of the shuttle valve structure avoids the possibility of gas mixing and ensures the safety of the system.

[0039] The medium fluid control valve achieves precise control of gas supply through simple diaphragm valve, switch valve and proportional valve operation, without complicated operation steps or tedious debugging process, which improves the usability of the system. The overall device structure is simple and reliable, reducing the use of components such as pipelines and adapters, facilitating maintenance and debugging, reducing installation space, improving gas supply stability, and reducing labor maintenance costs.

[0040] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A medium fluid control valve for medium power laser fine micromachining, characterized in that: A nitrogen channel (A.1), a left air inlet (A.2), an oxygen channel (B.1), a right air inlet (B.2), an exhaust channel (C.1), a right air outlet (D.1) and an air outlet (E.1) of a shuttle valve structure are provided on a base (4.1); wherein the nitrogen channel (A.1) and the left air inlet (A.2) are connected to a diaphragm valve (2) installed on the upper surface of the base (4.1) to control the ventilation and air cut-off of nitrogen; the oxygen channel (B.1) and the right air inlet (B.2) are connected to a switch valve (3) installed on the upper surface of the base (4.1) to control the ventilation and air cut-off of oxygen; the right air inlet (B.2) is connected to a switch valve (3) installed on the upper surface of the base (4.1) to control the ventilation and air cut-off of oxygen; The air inlet of the proportional valve (1) mounted on the upper surface of the base (4.1) is connected correspondingly, the exhaust channel (C.1) is connected correspondingly to the exhaust port of the proportional valve (1), and the right air outlet channel (D.1) is connected correspondingly to the air outlet of the proportional valve (1); the left air inlet channel (A.2) and the right air outlet channel (D.1) are connected inside the base (4.1) through a transition channel, and a dynamic seal is slidably arranged in the transition channel to block the left air inlet channel (A.2) or the right air outlet channel (D.1) so as to realize the shuttle valve function; the dynamic seal is composed of a seal (4.9) embedded in the inner hole of the guide sleeve (4.8), and the above transition channel is connected to the air outlet (E.1) of the shuttle valve structure.

2. The medium fluid control valve for medium power laser fine micromachining according to claim 1, characterized in that: A first rectangular sealing ring (4.3) is provided between the exhaust channel (C.1) and the exhaust port of the proportional valve (1); a second rectangular sealing ring (4.4) is provided between the right air inlet channel (B.2) and the air inlet of the proportional valve (1); and a third rectangular sealing ring (4.5) is provided between the right air outlet channel (D.1) and the air outlet of the proportional valve (1).

3. The medium fluid control valve for medium power laser fine micromachining according to claim 1, characterized in that: An O-ring a (4.14) is positioned and installed in the left air inlet passage (A.2) through a positioning sleeve a (4.15); an O-ring b (4.13) is positioned and installed in the right air outlet passage (D.1) through a positioning sleeve b (4.12); and the sliding range of the dynamic seal is between the O-ring a (4.14) and the O-ring b (4.13).

4. The medium fluid control valve for medium power laser fine micromachining according to claim 3, characterized in that: The positioning sleeve a (4.15) is fixed on the base (4.1) via a retaining ring a (4.7), and the positioning sleeve b (4.12) is fixed on the base (4.1) via a retaining ring b (4.10).

5. A medium fluid control valve for medium power laser fine micromachining according to any one of claims 1 to 4, characterized in that: The exhaust passage (C.1) is connected to a mounting hole on the side of the base (4.1), and a muffler (4.2) is installed in the mounting hole.

6. The medium fluid control valve for medium power laser fine micromachining according to claim 5, characterized in that: A screw plug is installed at each of the multiple process holes on the side wall of the base (4.1) for opening each air channel to seal the process holes.

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