A protective lens rotating device for a handheld laser welding gun

Abstract

This utility model discloses a protective lens rotation device for a handheld laser welding gun. A transmission box (11) is provided on the left side of the welding gun body (1). The transmission box (11) has a countersunk groove (12). A protective lens drawer (3) is installed in the countersunk groove (12). A plug ring (2) and a pressure plate gear (4) are installed in the inner hole of the protective lens drawer (3). A protective lens (9) is connected between the plug ring (2) and the pressure plate gear (4). A sealing cover (10) is installed on the top of the protective lens drawer (3). A mounting base (7) is installed at the bottom of the transmission box (11). A bearing (6) is installed on the mounting base (7). A rotating shaft (8) passes through the bearing (6) and is installed on a bevel gear (5). The bevel gear (5) meshes with the pressure plate gear (4). This utility model can rotate and adjust the lens by meshing the bevel gear, which is convenient and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of laser welding gun technology and relates to a protective lens rotation device for a handheld laser welding gun. Background Technology

[0002] Handheld laser welding machines utilize high-energy-density laser beams to weld workpieces, enabling precise heat input control. Compared to traditional arc welding or gas welding, laser welding produces a smaller heat-affected zone, resulting in less material deformation and heat damage, leading to more stable weld quality. Handheld laser welding machines also significantly enhance operational flexibility, allowing operators to hold the device directly and operate it in environments with varying angles and limited space, thus broadening its applicability.

[0003] The protective lens of a handheld laser welding gun is mainly used to block spatter, dust and debris generated during the welding process, preventing them from directly contacting the focusing lens and other core optical components, thus avoiding equipment damage; the protective lens can also reduce the harm of laser radiation to the operator.

[0004] Traditional methods of adjusting protective lenses involve either directly replacing the lens or using tools to adjust the protective lens pressure plate. Directly replacing the lens significantly increases production costs, while adjusting by adjusting the protective lens pressure plate is not very precise and has disadvantages such as inconvenience, complicated operation procedures, and affecting the internal sealing of the welding torch. Utility Model Content

[0005] In view of the above-mentioned problems in the prior art, this application provides a protective lens rotation device for a handheld laser welding gun.

[0006] The technical solution of this utility model is as follows:

[0007] A protective lens rotating device for a handheld laser welding gun includes a welding gun body, a transmission box on the left side of the welding gun body, a countersunk groove in the transmission box, a protective lens drawer inserted into the countersunk groove, a plug ring and a pressure gear fitted into the inner hole of the protective lens drawer, a protective lens being connected in contact between the plug ring and the pressure gear, a sealing cap installed above the protective lens drawer, a mounting base installed at the bottom of the transmission box, a bearing fitted into the mounting base, a rotating shaft passing through the bearing and fitted into a bevel gear, the bevel gear meshing with the pressure gear.

[0008] In a preferred embodiment of this utility model, the rotating shaft and the bevel gear are locked together by a set screw.

[0009] In a preferred embodiment of this utility model, the mounting base and the welding torch body are locked together by a first screw.

[0010] In a preferred embodiment of this utility model, the sealing cover and the transmission box are locked together by a second screw.

[0011] In a preferred embodiment of this utility model, a flange plate is installed on the left side of the transmission box, and the flange plate holds the welding gun barrel by a locking pipe clamp.

[0012] In a preferred embodiment of this utility model, a welding torch handle is provided at the bottom of the welding torch body.

[0013] The beneficial effects of this utility model are:

[0014] This invention relates to a protective lens rotation device for a handheld laser welding gun. Rotating the rotating shaft drives a bevel gear to rotate, which meshes with a pressure gear. A protective lens is connected to the sealing ring and the pressure gear. The synchronous rotation adjustment of the protective lens is achieved under the static friction between the sealing ring and the pressure gear. The rotation of the protective lens is controlled by gear transmission, and the adjustment accuracy is improved through the transmission ratio of the bevel gear meshing. This device offers high stability and adjustment precision, eliminating the need to disassemble the sealing cap and reducing the impact on sealing caused by disassembly and installation. It solves the problems of inconvenient adjustment, unstable adjustment effect, and impact on sealing of traditional laser welding gun protective lenses. Adjustment can be performed directly by rotating the rotating shaft, saving adjustment time and reducing production costs. Attached Figure Description

[0015] Figure 1 This is a front view of a protective lens rotation device for a handheld laser welding gun according to the present invention.

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 This is a sectional view along direction A;

[0018] Figure 4 This is an exploded view of the top of the transmission box;

[0019] Figure 5 This is an exploded view of the bottom of the transmission box.

[0020] In the diagram: 1-Welding torch body; 2-Plug ring; 3-Protective lens drawer; 4-Pressure plate gear; 5-Bevel gear; 6-Bearing; 7-Mounting base; 8-Rotating shaft; 9-Protective lens; 10-Sealing gland; 11-Transmission box; 12-Counterhead groove; 13-Flange plate; 14-Locking tube; 15-Welding torch barrel; 16-Welding torch handle. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1-5 As shown, a protective lens rotating device for a handheld laser welding gun includes a welding gun body 1. A transmission box 11 is provided on the left side of the welding gun body 1. The transmission box 11 has a countersunk groove 12. A protective lens drawer 3 is installed in the countersunk groove 12. A plug ring 2 and a pressure gear 4 are fitted into the inner hole of the protective lens drawer 3. A protective lens 9 is connected in contact between the plug ring 2 and the pressure gear 4. A sealing cover 10 is installed on the top of the protective lens drawer 3. A mounting base 7 is installed at the bottom of the transmission box 11. A bearing 6 is fitted on the mounting base 7. A rotating shaft 8 passes through the bearing 6 and is fitted to a bevel gear 5. The bevel gear 5 meshes with the pressure gear 4.

[0023] The rotating shaft 8 and the bevel gear 5 are locked together by a set screw, which can work stably in harsh environments and has good versatility and interchangeability; the mounting base 7 is locked together with the welding torch body 1 by a first screw; the sealing cover 10 is locked together with the transmission box 11 by a second screw; a flange plate 13 is installed on the left side of the transmission box 11, and the flange plate 13 holds the welding torch barrel 15 by a locking tube 14; a welding torch handle 16 is provided at the bottom of the welding torch body 1 to improve the grip stability.

[0024] During operation, place the bearing 6 into the mounting base 7, insert the rotating shaft 8 into the bearing 6 from below the mounting base 7, and finally install the bevel gear 5 above the rotating shaft 8. After the ends of the rotating shaft 8 and the bevel gear 5 are flush, tighten them with the set screw. Place the protective lens 9 between the plug ring 2 and the pressure gear 4, and then install the plug ring 2, the pressure gear 4, and the protective lens 9 into the protective lens drawer 3. Insert the protective lens drawer 3 into the countersunk groove 12 above the transmission box 11, insert the mounting base 7 into the mounting groove below the transmission box 11, and slightly rotate the rotating shaft 8. After confirming that the bevel gear 5 and the pressure gear 4 are properly engaged, cover the sealing cover 10 and tighten the first screw of the mounting base 7.

[0025] Rotating the rotating shaft 8 will drive the bevel gear 5 to rotate. The bevel gear 5 precisely meshes with the pressing gear 4. Under the action of static friction between the sealing ring 2 and the pressing gear 4, the protective lens 9 can be rotated synchronously. The protective lens can be rotated without disassembling the sealing cover. Due to the eccentric design of the protective lens, the usable area of ​​the protective lens is expanded. Originally, if one position was damaged, the protective lens had to be replaced. Now, after rotation, it is equivalent to replacing the protective lens with a new one. The protective lens can be reused 6 to 8 times after rotation, thereby reducing production costs.

[0026] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details.

Claims

1. A protective lens rotation device for a handheld laser welding gun, characterized in that: The device includes a welding torch body (1), a transmission box (11) is provided on the left side of the welding torch body (1), the transmission box (11) has a countersunk groove (12), a protective lens drawer (3) is installed in the countersunk groove (12), a plug ring (2) and a pressure plate gear (4) are installed in the inner hole of the protective lens drawer (3), a protective lens (9) is connected between the plug ring (2) and the pressure plate gear (4), a sealing cover (10) is installed on the top of the protective lens drawer (3), a mounting base (7) is installed at the bottom of the transmission box (11), a bearing (6) is installed on the mounting base (7), a rotating shaft (8) passes through the bearing (6) and is installed on a bevel gear (5), the bevel gear (5) meshes with the pressure plate gear (4).

2. The protective lens rotating device for a handheld laser welding gun according to claim 1, characterized in that: The rotating shaft (8) and the bevel gear (5) are locked together by a set screw.

3. The protective lens rotating device for a handheld laser welding gun according to claim 1, characterized in that: The mounting base (7) is locked to the welding torch body (1) by the first screw.

4. The protective lens rotating device for a handheld laser welding gun according to claim 1, characterized in that: The sealing cap (10) and the transmission box (11) are locked together by the second screw.

5. The protective lens rotating device for a handheld laser welding gun according to claim 1, characterized in that: A flange plate (13) is installed on the left side of the transmission box (11), and the flange plate (13) holds the welding gun barrel (15) by means of a locking tube (14).

6. The protective lens rotating device for a handheld laser welding gun according to any one of claims 1 to 5, characterized in that: The bottom of the welding torch body (1) is provided with a welding torch handle (16).

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