Pneumatic nozzle assembly for laser cutting machine

Abstract

The utility model discloses a pneumatic nozzle assembly for laser cutting machine, including the nozzle body, the nozzle body inside is provided with the light pipe, and still including the air duct of coaxial setting in the outside of light pipe, dust cover, the dust cover detachable setting in the output of nozzle body, the dust cover includes the cover body, the part of cover body corresponds the light pipe and the air duct and is provided with the through -hole, the movable symmetry of through -hole is provided with the baffle, the baffle is closed through -hole or each other away open through -hole each other. The utility model discloses through setting the dust cover with baffle structure in the output of nozzle body, in the non - working state of equipment, the baffle is closed through -hole automatically under the spring effect, realizes the effective closure of light pipe and air duct, avoids the dirt, the dirt and so on and enters the inside of nozzle, thereby protects the cleanliness of optical element, improves the laser transmission efficiency and cutting accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of pneumatic nozzle assemblies for laser cutting machines, and particularly relates to pneumatic nozzle assemblies for laser cutting machines. Background Technology

[0002] Laser cutting equipment typically includes a nozzle assembly, which not only guides the laser beam to focus onto the workpiece surface, but also delivers auxiliary gases (such as oxygen, nitrogen, etc.) through air ducts to achieve functions such as cooling, slag removal, and oxidation.

[0003] However, in actual use, it was found that the nozzle assembly, especially the light guide tube and air duct, is very susceptible to environmental dust when the equipment is not in operation. Since there is no laser output and gas flow at this time, the nozzle outlet is in an open state, and pollutants such as dust particles in the air and metal shavings generated during cutting will enter the nozzle through the through hole, adhere to the inner wall of the light guide tube or be deposited in the air duct, affecting its service life. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0005] This utility model provides a pneumatic nozzle assembly for a laser cutting machine, comprising:

[0006] The nozzle body has a light guide tube inside and also includes an air duct coaxially disposed outside the light guide tube.

[0007] A dust cover is detachably mounted on the output end of the nozzle body. The dust cover includes a cover body, on which a through hole is provided corresponding to the portion of the light guide tube and the air duct. Baffles are symmetrically and movable in the through hole, and the baffles are close to each other to close the through hole or far apart to open the through hole.

[0008] As a preferred embodiment of the above technical solution, the cover is symmetrically provided with embedding grooves for the side baffle to enter. A spring is provided in the embedding groove, and the two ends of the spring are respectively connected to the inner wall of the embedding groove and the baffle. An extension is provided at the bottom end of the baffle. A clearance groove is provided through the bottom end of the embedding groove for the extension to pass through. A second insertion hole is provided on the extension. A first insertion hole is provided at the bottom end of the embedding groove and on the side away from the baffle. When the second insertion hole of the extension is aligned with the first insertion hole, a pin can be inserted.

[0009] As a preferred embodiment of the above technical solution, the top of the air duct is also provided with an air duct interface that connects to an external air source.

[0010] As a preferred embodiment of the above technical solution, the pin is threaded into the insertion hole.

[0011] As a preferred embodiment of the above technical solution, the dust cover is threadedly fitted to the end of the nozzle body.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention features a dust cover with a baffle structure at the output end of the nozzle body. When the equipment is not in operation, the baffle automatically closes the through hole under the action of a spring, effectively sealing the light guide tube and air duct. This prevents dust, debris, and other contaminants from entering the nozzle, thus protecting the cleanliness of the optical components and improving laser transmission efficiency and cutting precision. At the same time, the extension part, in conjunction with the pin mechanism, can be locked in the open state, allowing users to flexibly control the opening and closing of the dust cover according to actual usage needs, improving operational convenience and work efficiency. Attached Figure Description

[0014] Figure 1 The diagram shown is a front view of the nozzle assembly in the embodiment;

[0015] Figure 2 The diagram shown is a cross-sectional view of the nozzle assembly in the embodiment;

[0016] Figure 3 The diagram shown is a schematic representation of the state of the dust cover in the embodiment;

[0017] Figure 4 The diagram shown is a schematic representation of the dust cover in state two of the embodiments;

[0018] Figure 5 What is shown is Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 6 What is shown is Figure 4 Enlarged schematic diagram of the structure at point B;

[0020] Reference numerals: 10. Nozzle body; 11. Light guide tube; 12. Air duct; 13. Air duct interface; 20. Dust cover; 21. Cover body; 210. Through hole; 22. Baffle; 23. Embedded groove; 24. Spring; 25. Relief groove; 26. Extension; 27. Insertion hole one; 28. Insertion hole two; 29. ​​Pin. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0022] Example

[0023] like Figure 1 , Figure 2 As shown, Figure 1The diagram shown is a front view of the nozzle assembly in the embodiment; Figure 2 The diagram shown is a cross-sectional view of the nozzle assembly in the embodiment;

[0024] This device includes:

[0025] The nozzle body 10 has a light guide tube 11 inside and an air duct 12 coaxially disposed outside the light guide tube 11. The top of the air duct 12 is also provided with an air duct interface 13 connected to an external air source.

[0026] Dust cover 20 is detachably mounted on the output end of nozzle body 10.

[0027] Specifically, the dust cover 20 is threadedly engaged with the end of the nozzle body 10.

[0028] The light guide tube 11 is used to guide the laser beam through the nozzle and focus it onto the material being processed. The air duct 12 is arranged around the light guide tube 11 to transport auxiliary gas (such as oxygen, nitrogen, etc.) and plays a role in cooling, slag blowing, oxidation and other functions during the laser cutting process.

[0029] The air duct interface 13 is used to connect to an external air supply system (such as an air compressor or gas cylinder) to provide an air source for the air duct 12;

[0030] The dust cover 20 prevents dust from entering the nozzle body 10 through the light guide tube 11 and air duct 12 when the nozzle body 10 is not in operation, thereby affecting the performance of its optical components.

[0031] like Figure 3 , Figure 4 As shown, Figure 3 The diagram shown is a schematic representation of the state of the dust cover in the embodiment; Figure 4 The diagram shown is a schematic representation of the dust cover in state two of the embodiments;

[0032] The dust cover 20 includes a cover body 21. The cover body 21 has a through hole 210 corresponding to the light guide tube 11 and the air duct 12. Baffles 22 are movably and symmetrically arranged in the through hole 210. The baffles 22 are close to each other to close the through hole 210 or far apart to open the through hole 210.

[0033] Figure 3 The image shows the first state of the baffle 22, where the baffles 22 are close to each other to close the through hole 210. In this state, dust can be prevented from entering the nozzle body 10 through the through hole 210. This state is suitable for non-working states or when the equipment is stopped.

[0034] Figure 4 The diagram shows the second state of the baffle 22, where the baffles 22 are far apart, causing the through hole 210 to open. At this time, the through hole 210 allows the laser beam and auxiliary gas to pass through, which is suitable for normal cutting operations.

[0035] like Figure 5 , Figure 6 As shown, Figure 5 What is shown is Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 What is shown is Figure 4 Enlarged schematic diagram of the structure at point B.

[0036] The cover 21 is symmetrically provided with an embedding groove 23 for the side baffle 22 to enter. A spring 24 is provided in the embedding groove 23. The two ends of the spring 24 are connected to the inner wall of the embedding groove 23 and the baffle 22, respectively. An extension 26 is provided at the bottom end of the baffle 22. A clearance groove 25 is provided through the bottom end of the embedding groove 23 for the extension 26 to pass through. A second insertion hole 28 is provided on the extension 26. A first insertion hole 27 is provided at the bottom end of the embedding groove 23 and on the side away from the baffle 22. When the second insertion hole 28 of the extension 26 is aligned with the first insertion hole 27, a pin 29 can be inserted. The pin 29 is threadedly engaged with the second insertion hole 28.

[0037] The embedded groove 23 is used to accommodate the baffle 22. A spring 24 is installed inside to realize the automatic reset of the baffle 22. In its natural state, the baffle 22 is in state one, that is, the embedded groove 23 is extended and the through hole 210 is closed. When it is necessary to open the through hole 210, by holding the extension part 26 by hand, the baffle 22 compresses the spring 24 and gradually enters the embedded groove 23 until the extension part 26 moves to the end of the relief groove 25. At this time, the insertion hole 28 of the extension part 26 is aligned with the insertion hole 27. Then, the pin 29 is inserted to lock the position of the baffle 22.

[0038] When this state is released, by rotating the pin 29, the pin 29 is disengaged from the second socket 28 and the first socket 27, and the baffle 22 will be reset under the action of the spring 24.

[0039] Working principle: When this device is in use, without external force, the dust cover 20 is pushed by the spring 24 to move the baffle 22 toward the center. The baffle 22 extends out of the embedded groove 23 and closes the through hole 210. At this time, neither laser nor gas can pass through, thus achieving the function of sealing and dust prevention. It is suitable for when the equipment is stopped or not in operation.

[0040] When it is necessary to switch back to the working state, hold the extension 26 and pull the baffle 22. The baffle 22 compresses the spring 24 and gradually retracts into the embedded groove 23. When the baffle 22 is fully opened, the extension 26 reaches the end of the relief groove 25. At this time, the second insertion hole 28 is aligned with the first insertion hole 27. Insert the pin 29 into the first insertion hole 27 and the second insertion hole 28 and tighten the thread to fix it. At this time, the baffle 22 is locked. At this time, both laser and gas can pass through.

[0041] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A pneumatic nozzle assembly for a laser cutting machine, characterized in that, include: The nozzle body (10) has a light guide tube (11) inside and also includes an air duct (12) coaxially disposed outside the light guide tube (11). A dust cover (20) is detachably mounted on the output end of the nozzle body (10). The dust cover (20) includes a cover body (21). A through hole (210) is provided on the cover body (21) corresponding to the light guide tube (11) and the air duct (12). Baffles (22) are symmetrically and movably arranged in the through hole (210). The baffles (22) are close to each other to close the through hole (210) or far away from each other to open the through hole (210).

2. The pneumatic nozzle assembly for a laser cutting machine according to claim 1, characterized in that, The cover (21) is symmetrically provided with an embedding groove (23) for the side baffle (22) to enter. A spring (24) is provided in the embedding groove (23). The two ends of the spring (24) are connected to the inner wall of the embedding groove (23) and the baffle (22) respectively. An extension (26) is provided at the bottom end of the baffle (22). A clearance groove (25) is provided through the bottom end of the embedding groove (23) for the extension (26) to pass through. A second insertion hole (28) is provided on the extension (26). A first insertion hole (27) is provided at the bottom end of the embedding groove (23) and away from the baffle (22). When the second insertion hole (28) of the extension (26) is aligned with the first insertion hole (27), a pin (29) can be inserted.

3. The pneumatic nozzle assembly for a laser cutting machine according to claim 1, characterized in that, The top of the air duct (12) is also provided with an air duct interface (13) that connects to an external air source.

4. The pneumatic nozzle assembly for a laser cutting machine according to claim 2, characterized in that, The pin (29) is threaded into the second insertion hole (28).

5. The pneumatic nozzle assembly for a laser cutting machine according to claim 2, characterized in that, The cover (21) of the dust cover (20) is threadedly engaged with the end of the nozzle body (10).

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