Blowing protection mechanism and laser processing head

Abstract

The utility model relates to laser equipment technical field especially, and more particularly relates to a kind of blowing protection mechanism and laser processing head.Blowing protection mechanism includes support frame, first air knife subassembly and second air knife subassembly;The first air knife subassembly is installed on the support frame, the first air knife subassembly is equipped with two air outlets of symmetrical distribution, the first air knife subassembly is used to blow out the positive pressure gas for protecting laser head by the air outlet;The second air knife subassembly is surrounded with the through-hole for the laser beam emitted by laser head to pass through, the second air knife subassembly is equipped with annular air outlet hole, and the annular air outlet hole is connected with the through-hole;The second air knife subassembly is used to blow out protective gas to workpiece by the annular air outlet hole.The utility model is compact in the structure of this blowing protection mechanism, low in cost, and adjustment operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of laser head technology, and in particular to an air blowing protection mechanism and a laser processing head. Background Technology

[0002] In laser welding, solder spatter and high-temperature weld oxidation are key issues affecting welding quality. Existing gas protection devices cannot adjust the angle of the gas blown onto the workpiece, resulting in problems such as incomplete removal of spattered solder and insufficient protection of the gas shield leading to weld oxidation in practical applications. Furthermore, existing gas protection devices also suffer from technical problems such as complex structure and high cost. Summary of the Invention

[0003] This utility model provides a gas blowing protection mechanism and a laser processing head to solve the technical problems of complex structure and high cost of existing gas blowing protection devices. The gas blowing protection mechanism in this application has a simple structure and low manufacturing cost.

[0004] An embodiment of the present invention provides an air blowing protection mechanism, including a support frame, a first air knife assembly, and a second air knife assembly;

[0005] The first air knife assembly is mounted on the support frame. The first air knife assembly has two symmetrically distributed air outlets. The first air knife assembly is used to blow out positive pressure gas to protect the laser head through the air outlets.

[0006] The second air knife assembly is surrounded by a through hole through which the laser beam emitted from the laser head passes, and the first air knife assembly is located between the laser head and the second air knife assembly; the second air knife assembly is provided with an annular air outlet hole, which communicates with the through hole; the second air knife assembly is used to blow protective gas onto the workpiece through the annular air outlet hole.

[0007] Optionally, the support frame includes a support plate and a slide rod mounted on the support plate; the air blowing protection mechanism further includes a first adapter and a second adapter, wherein the first air knife assembly is mounted on the slide rod via the first adapter, and the second air knife assembly is mounted on the slide rod via the second adapter.

[0008] Optionally, the air blowing protection mechanism further includes a rotating shaft rotatably mounted on the first adapter, the first adapter being mounted on the slide rod, and the first air knife assembly being mounted on the rotating shaft; the rotating shaft is used to drive the first air knife assembly to rotate, so as to adjust the air outlet angle.

[0009] Optionally, the first adapter is provided with a first clamping hole and a first side hole communicating with the first clamping hole. The air blowing protection mechanism further includes a first fastener, which is installed on the first adapter and passes through the first side hole. The first adapter is sleeved on the slide rod through the first clamping hole.

[0010] Optionally, the second adapter is provided with a second clamping hole and a second side hole communicating with the second clamping hole. The air blowing protection mechanism further includes a second fastener, which is installed on the second adapter and passes through the second side hole. The second adapter is sleeved on the slide rod through the second clamping hole.

[0011] Optionally, the second air knife assembly includes a first annular cover plate, a second annular cover plate, and an annular air knife body, wherein the first annular cover plate and the second annular cover plate are respectively installed at opposite ends of the annular air knife body;

[0012] The annular air knife body is provided with an air storage cavity and a first air inlet hole communicating with the air storage cavity. The first annular cover plate and the second annular cover plate are respectively used to cover the air storage cavity from opposite ends.

[0013] The annular air outlet is disposed between the second annular cover plate and the annular air knife body, and the air storage cavity is connected to the annular air outlet.

[0014] Optionally, the gas storage chamber includes an annular groove and a plurality of vent holes circumferentially spaced around the through hole, the first annular cover plate is used to cover the annular groove, and the second annular cover plate is used to cover all the vent holes;

[0015] The first air inlet is connected to the annular groove, and the annular groove is connected to the annular air outlet through the vent.

[0016] Optionally, the first air knife assembly includes a first cover plate, a second cover plate, and a purge air knife body, wherein the first cover plate and the second cover plate are respectively installed at opposite ends of the purge air knife body;

[0017] The blower body is provided with a receiving cavity and a second air inlet communicating with the receiving cavity. The first cover plate and the second cover plate are used to cover the receiving cavity from opposite ends.

[0018] One of the air outlets is disposed between the first cover plate and the blow-off air knife body, and the other air outlet is disposed between the second cover plate and the blow-off air knife body.

[0019] Optionally, the first air knife assembly is located above the second air knife assembly.

[0020] Another embodiment of this utility model provides a laser processing head, including a laser head and the above-mentioned air blowing protection mechanism, wherein the support frame is mounted on the laser head, and the laser beam emitted by the laser head passes through the through hole.

[0021] In this invention, both the air-sweeping knife assembly and the second air-knife assembly are mounted on the support frame, which is mounted on the laser head. The first air-knife assembly is located between the laser head and the second air-knife assembly. The laser emitted by the laser head passes through the through hole of the second air-knife assembly and irradiates the workpiece. During the laser cutting process, the first air-knife assembly can blow out positive pressure gas flowing to the side below the laser head. When welding slag or other debris splashes towards the laser head, the positive pressure gas flowing to the side will prevent the welding slag or other debris from splashing towards the laser head (that is, the positive pressure gas can drive the welding slag to flow to the side), thereby preventing the welding slag or other debris from splashing onto the laser head and damaging it. The second air-knife assembly blows protective gas from all sides towards the welding area of ​​the workpiece through an annular air outlet. This protective gas can prevent oxidation of the welding area of ​​the workpiece.

[0022] Furthermore, the height of the first and second air knife assemblies mounted on the support frame can be adjusted according to actual needs, thereby adjusting the distance between the first and second air knife assemblies and the laser head, improving the applicability and versatility of the air blowing protection mechanism. In addition, the first air knife assembly has two symmetrically distributed air outlets, which can blow out uniform high-pressure gas, avoiding the problem of uneven air blowing caused by a single air outlet. Moreover, this air blowing protection mechanism has a simple structure and low manufacturing cost. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a laser processing head provided in an embodiment of the present invention;

[0025] Figure 2 This is an exploded structural diagram of the air-blowing protection mechanism provided in one embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of the first air knife assembly of the air blowing protection mechanism provided in an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional view of the second air knife assembly of the air blowing protection mechanism provided in one embodiment of the present invention.

[0028] The reference numerals in the accompanying drawings are as follows:

[0029] 1. Support frame; 11. Support plate; 12. Slide rod; 2. First air knife assembly; 21. Air outlet; 22. First cover plate; 23. Second cover plate; 24. Blowing air knife body; 241. Receiving cavity; 242. Second air inlet; 3. Second air knife assembly; 31. Through hole; 32. Annular air outlet; 33. First annular cover plate; 34. Second annular cover plate; 35. Annular air knife body; 351. Air storage cavity; 3511. Annular groove; 3512. Vent hole; 352. First air inlet; 4. First adapter; 41. First clamping hole; 42. First side hole; 43. First fastener; 5. Second adapter; 51. Second clamping hole; 52. Second side hole; 6. Rotating shaft; 100. Laser head. Detailed Implementation

[0030] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] like Figures 1 to 4 As shown, an embodiment of the present invention provides an air blowing protection mechanism, including a support frame 1, a first air knife assembly 2, and a second air knife assembly 3;

[0032] The first air knife assembly 2 is mounted on the support frame 1. The first air knife assembly 2 is provided with two symmetrically distributed air outlets 21. The first air knife assembly 2 is used to blow out positive pressure gas to protect the laser head 100 through the air outlets 21.

[0033] The second air knife assembly 3 is provided with a through hole 31 through which the laser beam emitted by the laser head 100 passes. The first air knife assembly 2 is located between the laser head 100 and the second air knife assembly 3. The second air knife assembly 3 is provided with an annular air outlet 32, which is connected to the through hole 31. The second air knife assembly 3 is used to blow protective gas to the workpiece through the annular air outlet 32.

[0034] The first air knife assembly 2 is a rectangular structure, and the air outlet 21 is an outlet slit with a small opening, resulting in a high pressure for the positive pressure gas blown out of the first air knife assembly 2 through the air outlet 21. The second air knife assembly 3 is a flange-type structure, and the annular air outlet 32 ​​is an annular slit with a small opening, resulting in a high pressure for the protective gas blown out of the second air knife assembly 3 through the annular air outlet 32; the protective gas includes, but is not limited to, inert gases.

[0035] In this invention, both the air-sweeping knife assembly and the second air-knife assembly 3 are mounted on the support frame 1, which is mounted on the laser head 100. The first air-knife assembly 2 is located between the laser head 100 and the second air-knife assembly 3. The laser emitted by the laser head 100 passes through the through hole 31 of the second air-knife assembly 3 and irradiates the workpiece. During the laser cutting process of the workpiece by the laser head 100, the first air-knife assembly 2 can blow out positive pressure gas flowing to the side below the laser head 100. When welding slag or other materials splash towards the laser head 100, the positive pressure gas flowing to the side will prevent the welding slag or other materials from splashing towards the laser head 100 (that is, the positive pressure gas can drive the welding slag to flow to the side), thereby preventing the welding slag or other materials from splashing onto the laser head 100 and causing damage to the laser head 100. The second air-knife assembly 3 blows protective gas from all sides to the welding part of the workpiece through the annular air outlet 32. This protective gas can prevent oxidation of the welding part of the workpiece.

[0036] Furthermore, the height of the first air knife assembly 2 and the second air knife assembly 3 mounted on the support frame 1 can be adjusted according to actual needs, thereby adjusting the distance between the first air knife assembly 2 and the second air knife assembly 3 and the laser head 100, improving the applicability and versatility of the air blowing protection mechanism. In addition, the first air knife assembly has two symmetrically distributed air outlets 21, which can blow out uniform high-pressure gas, avoiding the problem of uneven air blowing caused by a single air outlet 21 in the first air knife assembly 2. Moreover, this air blowing protection mechanism has a simple structure and low manufacturing cost.

[0037] In one embodiment, such as Figure 1 and Figure 2 As shown, the support frame 1 includes a support plate 11 and a slide rod 12 mounted on the support plate 11; the air blowing protection mechanism also includes a first adapter 4 and a second adapter 5, the first air knife assembly 2 is mounted on the slide rod 12 through the first adapter 4, and the second air knife assembly 3 is mounted on the slide rod 12 through the second adapter 5.

[0038] Multiple slide rods 12 can be provided according to actual needs, and the support plate 11 is installed on the top of the slide rod 12. The first adapter 4 can be installed on the slide rod 12 through clamping holes, threaded holes, etc., and the second adapter 5 can be installed on the slide rod 12 through clamping holes, threaded holes, etc.

[0039] In this embodiment, the first air knife assembly 2 is mounted on the slide rod 12 via the first adapter 4, and the height of the first air knife assembly 2 on the slide rod 12 is easily adjustable; the second air knife assembly 3 is mounted on the slide rod 12 via the second adapter 5, and the height of the second air knife assembly 3 on the slide rod 12 is easily adjustable.

[0040] In one embodiment, such as Figure 1 and Figure 2 As shown, the air blowing protection mechanism also includes a rotating shaft 6 rotatably mounted on the first adapter 4. The first adapter 4 is mounted on the slide rod 12, and the first air knife assembly 2 is mounted on the rotating shaft 6. The rotating shaft 6 is used to drive the first air knife assembly 2 to rotate, so as to adjust the air outlet angle of the air outlet 21.

[0041] In this embodiment, the user can adjust the installation angle of the first air knife assembly 2 on the first adapter 4 through the rotating shaft 6, thereby adjusting the direction of the positive pressure gas blown out of the air outlet 21. The precise adjustability ensures that the splashes can be blown away from the optimal angle in a timely and thorough manner, so that the positive pressure gas blown out by the first air knife assembly 2 can better protect the laser head 100.

[0042] In one embodiment, such as Figure 1 and Figure 2 As shown, the first adapter 4 is provided with a first clamping hole 41 and a first side hole 42 communicating with the first clamping hole 41. The air blowing protection mechanism also includes a first fastener 43, which is installed on the first adapter 4 and passes through the first side hole 42. The first adapter 4 is sleeved on the slide rod 12 through the first clamping hole 41.

[0043] The first fastener 43 includes, but is not limited to, screws, bolts, etc.; the first adapter 4 is also provided with a first connecting hole that passes through the first side hole 42, the first fastener 43 is inserted into the first connecting hole, and the first adapter can adjust the width of the first side hole 42 so that the first adapter 4 can clamp or loosen the slide rod 12.

[0044] In this embodiment, the first adapter 4 is sleeved on the slide rod 12 through the first clamping hole 41, and the first fastener 43 can adjust the tightness of the clamping of the first adapter 4, thereby facilitating the adjustment of the height of the first air knife assembly 2 installed on the slide rod 12.

[0045] In one embodiment, such as Figure 1 and Figure 2 As shown, the second adapter 5 is provided with a second clamping hole 51 and a second side hole 52 communicating with the second clamping hole 51. The air blowing protection mechanism also includes a second fastener, which is installed on the second adapter 5 and passes through the second side hole 52. The second adapter 5 is sleeved on the slide rod 12 through the second clamping hole 51.

[0046] The second fastener includes, but is not limited to, screws, bolts, etc.; the second adapter 5 is also provided with a second connecting hole that passes through the second side hole 52, the second fastener is inserted into the second connecting hole, and the second adapter can adjust the width of the second side hole 52 so that the second adapter 5 can clamp or loosen the slide rod 12.

[0047] In this embodiment, the second adapter 5 is sleeved on the slide rod 12 through the second clamping hole 51, and the second fastener can adjust the tightness of the clamping of the second adapter 5, thereby facilitating the adjustment of the height of the second air knife assembly 3 installed on the slide rod 12.

[0048] In one embodiment, such as Figure 2 and Figure 4 As shown, the second air knife assembly 3 includes a first annular cover plate 33, a second annular cover plate 34, and an annular air knife body 35. The first annular cover plate 33 and the second annular cover plate 34 are respectively installed at opposite ends of the annular air knife body 35.

[0049] The annular air knife body 35 is provided with an air storage cavity 351 and a first air inlet 352 communicating with the air storage cavity 351. The first annular cover plate 33 and the second annular cover plate 34 are respectively used to cover the air storage cavity 351 from opposite ends.

[0050] The annular air outlet 32 ​​is disposed between the second annular cover plate 34 and the annular air knife body 35, and the air storage cavity 351 is connected to the annular air outlet 32.

[0051] The first annular cover plate 33 can cover the air storage cavity 351 from the top, and the second annular cover plate 34 can cover the air storage cavity 351 from the bottom; the second air knife assembly 3 also includes a first air connector inserted into the first air inlet 352, and an external air pipe can be connected to the air storage cavity 351 through the first air connector; the annular air outlet 32 ​​is the annular gap between the second annular cover plate 34 and the annular air knife body 35.

[0052] In this embodiment, the annular air knife body 35 has a simple structure, low cost, and convenient disassembly and assembly.

[0053] In one embodiment, such as Figure 4 As shown, the gas storage chamber 351 includes an annular groove 3511 and a plurality of vent holes 3512 circumferentially spaced around the through hole 31. The first annular cover plate 33 is used to cover the annular groove 3511, and the second annular cover plate 34 is used to cover all the vent holes 3512.

[0054] The first air inlet 352 is connected to the annular groove 3511, and the annular groove 3511 is connected to the annular air outlet 32 ​​through the vent 3512.

[0055] The number of vent holes 3512 can be set according to actual needs; the upper end of the annular groove 3511 is open, and the first annular cover plate 33 can cover the annular groove 3511 from the upper end; the lower end of the vent hole 3512 is open, and the second annular cover plate 34 can cover the vent hole 3512 from the lower end.

[0056] In this embodiment, the protective gas is input into the annular groove 3511 through the first air inlet 352, and the protective gas in the annular groove 3511 is blown toward the processing part of the workpiece through the vent 3512 and the annular air outlet 32 ​​in sequence.

[0057] In one embodiment, such as Figure 2 and Figure 3 As shown, the first air knife assembly 2 includes a first cover plate 22, a second cover plate 23, and a blowing air knife body 24. The first cover plate 22 and the second cover plate 23 are respectively installed at opposite ends of the blowing air knife body 24.

[0058] The blow-off air knife body 24 is provided with a receiving cavity 241 and a second air inlet 242 communicating with the receiving cavity 241. The first cover plate 22 and the second cover plate 23 are used to cover the receiving cavity 241 from opposite ends.

[0059] One of the air outlets 21 is disposed between the first cover plate 22 and the blow-off air knife body 24, and the other air outlet 21 is disposed between the second cover plate 23 and the blow-off air knife body 24.

[0060] The first cover plate 22 can cover the receiving cavity 241 from the top, and the second cover plate 23 can cover the receiving cavity 241 from the bottom. The first air knife assembly 2 also includes a second air connector inserted into the second air inlet 242, and an external air pipe can be connected to the receiving cavity 241 through the second air connector. One air outlet 21 is the gap between the first cover plate 22 and the blowing air knife body 24, and the other air outlet 21 is the gap between the second cover plate 23 and the blowing air knife body 24.

[0061] In this embodiment, the first air knife assembly 2 has a simple structure, low cost, and convenient disassembly and assembly.

[0062] In one embodiment, such as Figure 1 and Figure 2 As shown, the first air knife assembly 2 is located above the second air knife assembly 3.

[0063] like Figure 1 As shown, another embodiment of the present invention also provides a laser processing head, including a laser head 100 and the above-mentioned air blowing protection mechanism, wherein the support frame 1 is mounted on the laser head 100, and the laser beam emitted by the laser head 100 passes through the through hole 31.

[0064] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A blowout protection mechanism, characterized in that Includes a support frame, a first air knife assembly, and a second air knife assembly; The first air knife assembly is mounted on the support frame. The first air knife assembly has two symmetrically distributed air outlets. The first air knife assembly is used to blow out positive pressure gas to protect the laser head through the air outlets. The second air knife assembly is provided with a through hole through which the laser beam emitted from the laser head passes, and the first air knife assembly is located between the laser head and the second air knife assembly; the second air knife assembly is provided with an annular air outlet hole, which communicates with the through hole; the second air knife assembly is used to blow protective gas onto the workpiece through the annular air outlet hole.

2. The blowout protection mechanism of claim 1, wherein, The support frame includes a support plate and a slide rod mounted on the support plate; the air blowing protection mechanism further includes a first adapter and a second adapter, wherein the first air knife assembly is mounted on the slide rod via the first adapter, and the second air knife assembly is mounted on the slide rod via the second adapter.

3. The blowout protection mechanism of claim 2, wherein, The air blowing protection mechanism further includes a rotating shaft rotatably mounted on the first adapter, the first adapter being mounted on the slide rod, and the first air knife assembly being mounted on the rotating shaft; the rotating shaft is used to drive the first air knife assembly to rotate, so as to adjust the air outlet angle.

4. The blowout protection mechanism of claim 2, wherein, The first adapter is provided with a first clamping hole and a first side hole communicating with the first clamping hole. The air blowing protection mechanism also includes a first fastener, which is installed on the first adapter and passes through the first side hole. The first adapter is sleeved on the slide rod through the first clamping hole.

5. The blowout protection mechanism of claim 2, wherein, The second adapter is provided with a second clamping hole and a second side hole communicating with the second clamping hole. The air blowing protection mechanism also includes a second fastener, which is installed on the second adapter and passes through the second side hole. The second adapter is sleeved on the slide rod through the second clamping hole.

6. The blowout protection mechanism of claim 1, wherein, The second air knife assembly includes a first annular cover plate, a second annular cover plate, and an annular air knife body, wherein the first annular cover plate and the second annular cover plate are respectively installed at opposite ends of the annular air knife body; The annular air knife body is provided with an air storage cavity and a first air inlet hole communicating with the air storage cavity. The first annular cover plate and the second annular cover plate are respectively used to cover the air storage cavity from opposite ends. The annular air outlet is disposed between the second annular cover plate and the annular air knife body, and the air storage cavity is connected to the annular air outlet.

7. The blowout protection mechanism of claim 6, wherein, The gas storage chamber includes an annular groove and a plurality of vent holes circumferentially spaced around the through hole. The first annular cover plate is used to cover the annular groove, and the second annular cover plate is used to cover all the vent holes. The first air inlet is connected to the annular groove, and the annular groove is connected to the annular air outlet through the vent.

8. The blowout prevention mechanism of claim 1, wherein, The first air knife assembly includes a first cover plate, a second cover plate, and a purge air knife body, wherein the first cover plate and the second cover plate are respectively installed at opposite ends of the purge air knife body; The blower body is provided with a receiving cavity and a second air inlet communicating with the receiving cavity. The first cover plate and the second cover plate are used to cover the receiving cavity from opposite ends. One of the air outlets is disposed between the first cover plate and the blow-off air knife body, and the other air outlet is disposed between the second cover plate and the blow-off air knife body.

9. Blow-out protection mechanism according to any one of claims 1 to 8, characterized in that The first air knife assembly is located above the second air knife assembly.

10. A laser processing head, characterized in that, It includes a laser head and a blowing protection mechanism as described in any one of claims 1 to 9, wherein the support frame is mounted on the laser head and the laser beam emitted from the laser head passes through the through hole.

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