Handheld laser cladding welding device

Abstract

The utility model relates to the technical field of laser welding, and discloses a handheld laser cladding welding device which comprises a gun body, a connecting mechanism and a light path mechanism, the lower end of the gun body is fixedly connected with a gun handle, one side of the gun body is provided with the connecting mechanism, the connecting mechanism comprises a movable sleeve and a pipe nozzle, and the movable sleeve is fixedly connected with the gun handle. A front cover plate is fixedly connected to the outer wall of one side of the gun body, a gun barrel is fixedly connected to the center of the outer wall of one side of the front cover plate, a reset spring is fixedly connected to the other side of a movable sleeve, limiting blocks are fixedly connected to the upper end and the lower end of the outer wall of the front end of the movable sleeve, and clamping blocks are fixedly connected to the upper end and the lower end of a nozzle. According to the pipe nozzle, the connecting groove formed in the connecting sleeve in the connecting mechanism is in sliding connection with the clamping block, the reset spring is matched to act on the movable sleeve, the limiting block is connected with the clamping block in a clamped mode, the movable sleeve is used for driving the limiting block to move out of the connecting groove, the clamping state of the clamping block can be relieved, and disassembly and assembly of the pipe nozzle are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a handheld laser cladding welding device. Background Technology

[0002] A handheld laser cladding welding device is a welding device that applies laser technology to the cladding and welding process of metal materials. It uses a laser source to generate a laser beam, which is transmitted to the welding torch through an optical fiber. After being focused, the laser beam irradiates the surface of the workpiece, causing the surface of the workpiece to melt. At the same time, the wire fed by the wire feeder is rapidly melted and combined with the workpiece. After cooling, the wires are joined together, thus realizing the welding operation.

[0003] However, handheld laser cladding welding devices have various types of nozzles that can be changed by workers to meet different welding needs. At the same time, nozzles are consumables and need to be changed frequently. However, most of the handheld laser cladding welding devices currently on the market are not convenient for workers to change different types or new nozzles, which reduces the efficiency of replacement.

[0004] Therefore, those skilled in the art have provided a handheld laser cladding welding device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a handheld laser cladding welding device. The device uses a connecting groove on the connecting sleeve in the connecting mechanism to slide with a locking block. With the help of a return spring acting on the moving sleeve, the limiting block and the locking block are locked together. The locking state of the locking block can be released by using the moving sleeve to move the limiting block out of the connecting groove, which facilitates the disassembly and assembly of the nozzle.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A handheld laser cladding welding device includes a gun body, a connecting mechanism, and an optical path mechanism. A gun handle is fixedly connected to the lower end of the gun body. A connecting mechanism is provided on one side of the gun body. The connecting mechanism includes a movable sleeve and a nozzle. A front cover plate is fixedly connected to the outer wall of one side of the gun body. A gun barrel is fixedly connected to the center of the outer wall of one side of the front cover plate. A return spring is fixedly connected to the other side of the movable sleeve. A limiting block is fixedly connected to the upper and lower ends of the outer wall of the front end of the movable sleeve. A locking block is fixedly connected to the upper and lower ends of the nozzle. A connecting sleeve is fixedly connected to one side of the gun barrel. A connecting groove is provided at the upper and lower ends of the outer wall of one side of the connecting sleeve. An optical path mechanism is provided inside the gun body.

[0008] The optical path mechanism includes a focusing lens frame, a protective lens frame, and a collimating lens frame. A first mounting groove is provided in the middle of the upper end of the gun body, a second mounting groove is provided on one side of the upper end of the gun body, a third mounting groove is provided on the outer wall of the other side of the gun handle, a first optical path groove is provided in the middle of the inner part of the gun body, a second optical path groove is provided inside the gun handle, a servo motor is provided on the other side of the bottom surface inside the first optical path groove, a refractive lens is fixedly connected to the output shaft of the servo motor, and a rear cover plate is fixedly connected to the outer wall of the other side of the gun body.

[0009] The above technical solution involves sliding the two L-shaped connecting slots on the connecting sleeve with the locking blocks, allowing the nozzle to be inserted into the connecting sleeve. Rotating the nozzle presses against the two limiting blocks, causing the locking blocks to rotate into the innermost part of the connecting slots. In conjunction with the return spring acting on the moving sleeve, the moving sleeve drives the two limiting blocks to reset and engage with the locking blocks, thus completing the nozzle installation. By using the moving sleeve to move the limiting blocks out of the connecting slots, the locking state of the locking blocks can be released, and the nozzle can be removed.

[0010] Furthermore, a button is provided on the outer wall of one side of the gun handle, and a wire feed tube is fixedly connected to the other side of the outer wall of the gun barrel;

[0011] The above technical solution allows the operator to control the operation of the device by using a button on the gun handle. The wire feed tube fixedly connected to the gun barrel can be connected to a wire feeder, allowing the wire feeder to deliver the welding wire to the vicinity of the nozzle, where it is melted by the laser beam and combines with the molten workpiece surface to cover the weld.

[0012] Furthermore, the other side of the return spring is fixedly connected to the barrel, and the inner wall of the movable sleeve is slidably connected to the barrel;

[0013] Through the above technical solution, the return spring acts on the moving sleeve, so that the moving sleeve, which is slidably connected to the outer wall of the barrel, can drive the limiting block to keep blocking the connecting groove opened on the connecting sleeve.

[0014] Furthermore, each of the locking blocks is slidably connected to the connecting groove, and one side of each limiting block passes through the connecting sleeve and is locked in place with the locking block;

[0015] The above technical solution involves squeezing the inclined limiting block out of the connecting groove by the locking block, causing the locking block to slide into the innermost part of the L-shaped connecting groove. The elastic force of the reset spring pushes the moving sleeve to move the limiting block to block the connecting groove, thus locking the locking block inside the connecting groove and fixing the nozzle inside the connecting sleeve.

[0016] Furthermore, the focusing lens frame is fixedly connected to the gun body by bolts, the protective lens frame is fixedly connected to the gun body by bolts, and the collimating lens frame is fixedly connected to the gun handle by bolts;

[0017] The above technical solution uses bolts to fix the focusing lens frame and the protective lens frame to the gun body, and bolts to fix the collimating lens frame to the gun handle, so that each lens frame can be firmly installed and is not easy to loosen.

[0018] Furthermore, the inner walls of the first mounting groove are slidably connected to the focusing lens frame, the inner walls of the second mounting groove are slidably connected to the protective lens frame, and the upper ends of the inner walls of the first and second mounting grooves are fixedly connected with a first sealing ring.

[0019] Through the above technical solution, by allowing the focusing lens frame, protective lens frame, and the first and second mounting slots to slide together, the focusing lens frame and protective lens frame can be easily removed from the gun body for replacement and maintenance after the bolts are unscrewed. The first sealing ring fixed in the first and second mounting slots can improve the sealing performance when the lens frame is installed inside the gun body, preventing external liquid from seeping in and protecting the internal lens. The focusing lens frame contains a focusing lens that can focus the laser refracted by the refraction lens to a single point, and the protective lens frame contains a protective lens that can protect other lenses inside the gun body.

[0020] Furthermore, the inner walls around the third mounting groove are slidably connected to the collimating lens frame, and a second sealing ring is fixedly connected to the other side of the inner wall of the third mounting groove;

[0021] Through the above technical solution, the collimating lens frame is slidably connected to the third mounting slot, allowing the collimating lens frame to be easily removed from the gun body for replacement and maintenance after the bolts are unscrewed. The second sealing ring fixed in the third mounting slot can improve the sealing performance when the collimating lens frame is mounted on the gun body, preventing external liquid from seeping in and protecting the collimating lens. The collimating lens frame contains a collimating lens that can straighten the scattered laser light emitted from the optical fiber inserted in the second optical path slot into parallel light and transmit it to the refractive lens.

[0022] Furthermore, a third sealing ring is fixedly connected to the outer wall on one side of the rear cover plate, and a storage battery is installed in the cavity at the lower end of the gun body.

[0023] The above technical solution uses bolts to fix the rear cover plate to the fixed gun body, allowing workers to unscrew the bolts, remove the rear cover plate, and inspect and maintain the servo motor and refractive lens inside the gun body. The third sealing ring improves the sealing performance when the rear cover plate is fixed to the gun body, preventing external liquids from seeping into the gun body and protecting the internal components. The battery installed inside the gun body provides power to maintain the normal operation of the device. The refractive lens converts the obliquely incident laser light from the collimating lens into a horizontal laser light, which is then transmitted to the focusing lens. The servo motor drives the refractive lens to move back and forth slightly, changing the refraction angle, thus causing the laser point focused by the focusing lens to swing back and forth, preventing the laser focus point from failing to irradiate the workpiece surface due to excessively large weld seams.

[0024] This utility model has the following beneficial effects:

[0025] 1. This utility model proposes a handheld laser cladding welding device. Two L-shaped connecting grooves on the connecting sleeve of the connecting mechanism are slidably connected to a locking block fixed on the nozzle. This allows the nozzle to be inserted into the connecting sleeve. Rotating the nozzle presses against two inclined limiting blocks, rotating the locking block into the innermost part of the connecting groove. A return spring acts on the moving sleeve, causing the moving sleeve to reset the two fixed limiting blocks and engage with the locking block, completing the nozzle installation. The moving sleeve then moves the limiting blocks out of the connecting groove, releasing the locking block and allowing the nozzle to be removed. This facilitates the replacement of nozzles of different shapes or new nozzles, improving replacement efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of a handheld laser cladding welding device proposed in this utility model;

[0027] Figure 2 This is an exploded view of the overall structure of a handheld laser cladding welding device proposed in this utility model;

[0028] Figure 3 This is an axial sectional view of a handheld laser cladding welding device proposed in this utility model;

[0029] Figure 4 This is an exploded view of a partial structure of a handheld laser cladding welding device proposed in this utility model;

[0030] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Gun body; 2. Gun handle; 3. Button; 4. Connecting mechanism; 401. Barrel; 402. Connecting sleeve; 403. Connecting groove; 404. Return spring; 405. Moving sleeve; 406. Limiting block; 407. Nozzle; 408. Locking block; 5. Front cover plate; 6. Wire feed tube; 7. Optical path mechanism; 701. First mounting groove; 702. Second mounting groove; 703. First optical path groove; 704. Second optical path groove; 705. Focusing lens frame; 706. Protective lens frame; 707. Third mounting groove; 708. Collimating lens frame; 709. Servo motor; 710. Refraction lens; 8. First sealing ring; 9. Second sealing ring; 10. Rear cover plate; 11. Third sealing ring; 12. Battery. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figure 1-5 The present invention provides a specific embodiment of a handheld laser cladding welding device, comprising a gun body 1, a connecting mechanism 4, and an optical path mechanism 7. A gun handle 2 is fixedly connected to the lower end of the gun body 1. A connecting mechanism 4 is provided on one side of the gun body 1. The connecting mechanism 4 includes a movable sleeve 405 and a nozzle 407. A front cover plate 5 is fixedly connected to the outer wall of one side of the gun body 1. A gun barrel 401 is fixedly connected to the center of the outer wall of one side of the front cover plate 5. A return spring 404 is fixedly connected to the other side of the movable sleeve 405. A limiting block 406 is fixedly connected to the upper and lower ends of the outer wall of the front end of the movable sleeve 405. A locking block 408 is fixedly connected to the upper and lower ends of the nozzle 407. A connecting sleeve 402 is fixedly connected to one side of the gun barrel 401. A connecting groove 403 is provided at the upper and lower ends of the outer wall of one side of the connecting sleeve 402. An optical path mechanism 7 is provided inside the gun body 1.

[0035] The optical path mechanism 7 includes a focusing lens frame 705, a protective lens frame 706, and a collimating lens frame 708. A first mounting groove 701 is provided in the middle of the upper end of the gun body 1, a second mounting groove 702 is provided on one side of the upper end of the gun body 1, a third mounting groove 707 is provided on the outer wall of the other side of the gun handle 2, a first optical path groove 703 is provided in the middle of the interior of the gun body 1, a second optical path groove 704 is provided in the interior of the gun handle 2, a servo motor 709 is provided on the other side of the bottom surface of the interior of the first optical path groove 703, a refractive lens 710 is fixedly connected to the output shaft of the servo motor 709, and a rear cover plate 10 is fixedly connected to the outer wall of the other side of the gun body 1.

[0036] The two L-shaped connecting grooves 403 on the connecting sleeve 402 of the connecting mechanism 4 are slidably connected to the locking block 408 fixed on the nozzle 407, allowing the nozzle 407 to be inserted into the connecting sleeve 402. Rotating the nozzle 407 presses against the two inclined limiting blocks 406, turning the locking block 408 into the innermost part of the connecting groove 403. With the help of the return spring 404 acting on the moving sleeve 405, the moving sleeve 405 drives the two limiting blocks 406 fixedly connected to it to reset and engage with the locking block 408, completing the installation of the nozzle 407. By using the moving sleeve 405 to move the limiting blocks 406 out of the connecting groove 403, the locking state of the locking block 408 can be released, and the nozzle 407 can be removed. This makes it easier for workers to replace different types or new nozzles 407, improving replacement efficiency.

[0037] A button 3 is provided on the outer wall of one side of the gun handle 2, and a wire feed tube 6 is fixedly connected to the other side of the outer wall of the gun barrel 401. The button 3 on the gun handle 2 allows the operator to control the operation of the device, while the wire feed tube 6 fixedly connected to the gun barrel 401 can be connected to a wire feeder, allowing the wire feeder to deliver the welding wire to the vicinity of the nozzle 407, where it is melted by the laser beam and combines with the molten workpiece surface to cover the weld. The other side of the return spring 404 is fixedly connected to the gun barrel 401, and the inner wall of the movable sleeve 405 is slidably connected to the gun barrel 401. The return spring 404 acts on the movable sleeve 405, allowing the movable sleeve 405, which is slidably connected to the outer wall of the gun barrel 401, to drive the limiting block 406 to maintain the connection on the connecting sleeve 402. The connecting groove 403 is blocked, and the locking block 408 is slidably connected to the connecting groove 403. One side of the limiting block 406 passes through the connecting sleeve 402 and is locked to the locking block 408. By allowing the locking block 408 to press the inclined limiting block 406 out of the connecting groove 403, the locking block 408 slides into the innermost part of the L-shaped connecting groove 403. With the elastic force of the return spring 404, the moving sleeve 405 is pushed, which drives the limiting block 406 to block the connecting groove 403, so that the locking block 408, which has rotated into the connecting groove 403, is locked and restricted in the connecting groove 403. This fixes the nozzle 407 in the connecting sleeve 402. The focusing frame 705 is fixedly connected to the gun body 1 by bolts, the protective frame 706 is fixedly connected to the gun body 1 by bolts, and the collimating frame 708 passes through... The focusing lens frame 705 and the protective lens frame 706 are fixed to the gun body 1 by bolts, while the collimating lens frame 708 is fixed to the gun handle 2 by bolts, ensuring that each lens frame is firmly installed and not easily loosened. The inner walls of the first mounting groove 701 and the second mounting groove 702 are slidably connected to the focusing lens frame 705 and the protective lens frame 706, respectively. The upper ends of the inner walls of the first mounting groove 701 and the second mounting groove 702 are fixedly connected to the first sealing ring 8. By allowing the focusing lens frame 705, the protective lens frame 706, and the first mounting groove 701 and the second mounting groove 702 to be slidably connected, the focusing lens frame 705 and the protective lens frame 706 can be easily removed after the bolts are unscrewed. The gun body 1 is removed for replacement and maintenance. The first sealing ring 8, fixed in the first mounting slot 701 and the second mounting slot 702, improves the sealing performance when the lens frame is installed inside the gun body 1, preventing external liquid from seeping in and protecting the internal lens. The focusing lens frame 705 contains a focusing lens that can focus the laser refracted by the refractive lens 710 to a single point. The protective lens frame 706 contains a protective lens that can protect other lenses inside the gun body 1. The inner walls of the third mounting slot 707 are slidably connected to the collimating lens frame 708. The other side of the inner wall of the third mounting slot 707 is fixedly connected to the second sealing ring 9. The collimating lens frame 708 is slidably connected to the third mounting slot 707, so that after the bolts are unscrewed...The collimating lens frame 708 can be easily removed from the gun body 1 for replacement and maintenance. The second sealing ring 9, fixed in the third mounting slot 707, improves the sealing performance when the collimating lens frame 708 is mounted on the gun body 1, preventing external liquid from seeping in and protecting the collimating lens. The collimating lens frame 708 contains a collimating lens, which can straighten the scattered laser light emitted from the optical fiber inserted in the second optical path slot 704 into parallel light and transmit it to the refracting lens 710. The third sealing ring 11 is fixedly connected to the outer wall of one side of the rear cover plate 10. A battery 12 is installed in the cavity at the lower end of the gun body 1. The rear cover plate 10 is fixedly connected to the fixed gun body 1 by bolts, allowing the operator to unscrew the bolts and remove the rear cover plate 10. Next, the servo motor 709 and refractive lens 710 inside the gun body 1 are inspected and maintained. The third sealing ring 11 improves the sealing performance when the rear cover plate 10 is fixed to the gun body 1, preventing external liquids from seeping into the gun body 1 and protecting the internal components. The battery 12 inside the gun body 1 provides power to maintain the device's normal operation. The refractive lens 710 converts the obliquely incident laser light from the collimating lens into a horizontal laser light, which is then transmitted to the focusing lens. The servo motor 709 drives the refractive lens 710 to move slightly back and forth, changing the refraction angle, thus causing the laser point focused by the focusing lens to oscillate back and forth, preventing the laser focus point from failing to irradiate the workpiece surface due to excessively large weld seams.

[0038] Working Principle: When using this handheld laser cladding welding device, the operator first connects the wire feed tube 6 to the wire feeder using a connecting tube, allowing the wire to extend near the nozzle 407. Then, the fiber optic cable is inserted into the second optical path slot 704 of the handle 2 to provide the laser source. Next, the operator aligns the nozzle 407 with the welding area and presses button 3. At this point, the dispersed laser beam is straightened by the collimating lens 708 and transmitted to the refractive lens 710. The refractive lens 710 refracts the laser beam into a horizontal beam, which is then focused by the focusing lens 705, forming a laser point that exits the nozzle 407 through the protective lens 706. The servo motor 709 then drives the refractive lens... The plate 710 rotates back and forth, causing the laser spot to swing back and forth, melting the workpiece surface and welding wire for welding. Finally, the operator can use the movable sleeve 405 to move the limiting block 406 out of the connecting groove 403, thereby releasing the locking state of the locking block 408. The nozzle 407 is then removed, and the locking block 408 on the other nozzle 407 is inserted into the connecting groove 403 on the connecting sleeve 402. The nozzle 407 is rotated to rotate the locking block 408 into the innermost part of the connecting groove 403. With the help of the reset spring 404 acting on the movable sleeve 405, the movable sleeve 405 drives the limiting block 406 to reset and lock into the locking block 408, completing the installation of the nozzle 407.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld laser cladding welding device, comprising a gun body (1), a connecting mechanism (4), and an optical path mechanism (7), characterized in that: A gun handle (2) is fixedly connected to the lower end of the gun body (1). A connecting mechanism (4) is provided on one side of the gun body (1). The connecting mechanism (4) includes a movable sleeve (405) and a nozzle (407). A front cover plate (5) is fixedly connected to the outer wall of one side of the gun body (1). A gun barrel (401) is fixedly connected to the center of the outer wall of one side of the front cover plate (5). A return spring (404) is fixedly connected to the other side of the movable sleeve (405). A limiting block (406) is fixedly connected to the upper and lower ends of the outer wall of the front end of the movable sleeve (405). A locking block (408) is fixedly connected to the upper and lower ends of the nozzle (407). A connecting sleeve (402) is fixedly connected to one side of the gun barrel (401). A connecting groove (403) is opened at the upper and lower ends of the outer wall of one side of the connecting sleeve (402). An optical path mechanism (7) is provided inside the gun body (1). The optical path mechanism (7) includes a focusing lens frame (705), a protective lens frame (706), and a collimating lens frame (708). A first mounting groove (701) is provided in the middle of the upper end of the gun body (1). A second mounting groove (702) is provided on one side of the upper end of the gun body (1). A third mounting groove (707) is provided on the outer wall of the other side of the gun handle (2). A first optical path groove (703) is provided in the middle of the inside of the gun body (1). A second optical path groove (704) is provided in the inside of the gun handle (2). A servo motor (709) is provided on the other side of the bottom surface inside the first optical path groove (703). A refractive lens (710) is fixedly connected to the output shaft of the servo motor (709). A rear cover plate (10) is fixedly connected to the outer wall of the other side of the gun body (1).

2. The handheld laser cladding welding device according to claim 1, characterized in that: A button (3) is provided on the outer wall of one side of the gun handle (2), and a wire feed tube (6) is fixedly connected to the other side of the outer wall of the gun barrel (401).

3. The handheld laser cladding welding device according to claim 1, characterized in that: The other side of the return spring (404) is fixedly connected to the barrel (401), and the inner wall of the movable sleeve (405) is slidably connected to the barrel (401).

4. The handheld laser cladding welding device according to claim 1, characterized in that: The locking blocks (408) are all slidably connected to the connecting grooves (403), and one side of the limiting block (406) passes through the connecting sleeve (402) and is locked to the locking blocks (408).

5. The handheld laser cladding welding device according to claim 1, characterized in that: The focusing lens frame (705) is fixedly connected to the gun body (1) by bolts, the protective lens frame (706) is fixedly connected to the gun body (1) by bolts, and the collimating lens frame (708) is fixedly connected to the gun handle (2) by bolts.

6. The handheld laser cladding welding device according to claim 1, characterized in that: The inner walls of the first mounting groove (701) are slidably connected to the focusing lens frame (705), and the inner walls of the second mounting groove (702) are slidably connected to the protective lens frame (706). The upper ends of the inner walls of the first mounting groove (701) and the second mounting groove (702) are fixedly connected with a first sealing ring (8).

7. The handheld laser cladding welding device according to claim 1, characterized in that: The inner walls of the third mounting groove (707) are slidably connected to the collimating lens frame (708), and a second sealing ring (9) is fixedly connected to the other side of the inner wall of the third mounting groove (707).

8. The handheld laser cladding welding device according to claim 1, characterized in that: A third sealing ring (11) is fixedly connected to the outer wall of one side of the rear cover plate (10), and a storage battery (12) is provided in the cavity at the lower end of the gun body (1).

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