Laser welding machine for high-precision steel and laser welding method thereof

Abstract

The invention discloses a high-precision steel laser welding machine and a laser welding method thereof, and relates to the technical field of laser welding, the high-precision steel laser welding machine comprises a machine body, one side of the machine body is fixedly connected with an adjusting arm, the top of the adjusting arm is fixedly connected with a welding device in a penetrating mode, one side of the welding device is connected with a welding head lens in an inserted mode, and one side of the welding device is fixedly connected with a supporting arm; the end, away from the welding device, of the supporting arm is fixedly connected with a shielding gas output pipe, and when the lens is overhauled, the sliding baffle can slide down instantly under the influence of gravity and block an installation opening of the welding device, so that the operation that a worker seals the installation opening through a rubber tape is reduced, the cleaning or overhauling speed of the welding head lens is increased, and the working efficiency is improved. Meanwhile, resources are saved, the maintenance cost is reduced, fixing of the welding head lens can be omitted through the operation of pushing the sliding piece and the sliding shell, the operation that a worker uses a tool to disassemble bolts one by one is omitted, and the cleaning or maintenance speed of the welding head lens is further increased.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, in particular to a laser welding machine for high-precision steel and a laser welding method thereof. Background Art

[0002] High-precision steel is a high-precision metal alloy steel. It is made through a special smelting process and has special properties to meet the needs of users. During the production of high-precision steel, laser welding machines are needed to weld it. Laser welding machines focus, adjust and control the laser beam through an optical system to generate a high-energy laser beam. It is a device specially used for welding high-precision steel. It is developed based on background technologies in multiple aspects such as laser technology, optical system technology, motion control technology and welding parameter control technology.

[0003] At present, when the existing laser welding machine is in use, the welding head needs to use the internal lens to focus the laser beam and adjust the focal length to assist the laser welding. It is an indispensable component in laser welding. However, due to the high energy and high temperature of the laser beam, the lens will also cause damage such as burning and cracking. Therefore, the lens needs to be replaced frequently. At present, when replacing, most of them are done by manually holding tools and turning multiple bolts to complete the removal of the lens, which is relatively cumbersome. Moreover, when replacing, since the lens needs to be removed from the welding head, a gap will appear at the lens installation on the welding head. At this time, in order to prevent dust in the air from entering the installation port, it is necessary to manually use tape to seal the installation port, and then clean and repair the removed lens, resulting in a waste of some tape each time the removal is performed. At the same time, the tape needs to be taken out each time, which will slow down the sealing speed and increase the risk of dust particles entering the installation port.

[0004] At the same time, during the laser welding process, in order to ensure the welding quality, shielding gas must be used to assist. The shielding gas nozzle should be set on one side of the welding head to achieve off-axis side blowing protection. This measure can effectively isolate the air, thereby preventing certain gases in the air from oxidizing the weld and ensuring the smooth progress of the welding process. However, when the shielding gas nozzle is not in use, dust particles in the air may gather at one end of the nozzle. Long-term accumulation will cause the nozzle outlet to be blocked, resulting in the need for frequent cleaning or maintenance of the shielding gas nozzle, increasing maintenance costs.

[0005] Therefore, a laser welding machine for high-precision steel and a laser welding method thereof are proposed to solve the above problems. Summary of the invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a laser welding machine for high-precision steel and a laser welding method thereof to solve the problems of low maintenance efficiency of welding head lenses and frequent cleaning of shielding gas nozzles in the prior art.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser welding machine for high-precision steel and a laser welding method thereof, comprising a machine body, an adjusting arm fixedly connected to one side of the machine body, a welder fixedly connected to the top of the adjusting arm, a welding head lens plugged into one side of the welder, a supporting arm fixedly connected to one side of the welder, a shielding gas output pipe fixedly connected to one end of the supporting arm away from the welder, the laser welding machine for high-precision steel and the laser welding method thereof comprising: a shielding protection mechanism and a sliding protection mechanism, the shielding protection mechanism being located above the sliding protection mechanism;

[0008] The shielding and protection mechanism is used for fixing and disassembling the welding head lens;

[0009] The sliding protection mechanism is used to protect the protective gas output pipe from dust accumulation when it is in use.

[0010] Preferably, the shielding and protection mechanism includes a mounting plate, which is fixedly connected to one side of the welder, and the mounting plate is symmetrically and slidably connected to a sliding shell on the side away from the welder, a limit rod is slidably connected inside the sliding shell, the limit rod passes through the sliding shell, a guide column is fixedly connected to the top of the limit rod, and a resist rod is fixedly connected to the side of the limit rod close to the mounting plate, and the resist rod can movably pass through the sliding shell, a fixing plate is fixedly connected to the upper end of the mounting plate, a guide bevel is symmetrically passed through the top of the fixing plate, the guide column is slidably connected to the guide bevel, a sliding baffle is slidably connected to the bottom of the mounting plate, a hole is passed through the mounting plate on the side away from the welder, and the resist rod can pass through the hole and abut against the sliding baffle.

[0011] Preferably, the two sliding shells are slidably connected with sliding plates on the sides away from each other, and the sliding plates are slidably connected with sliding seats through square grooves on the sides away from the sliding shells. The outer sides of the sliding seats are fixedly connected with locking teeth, spring rods are symmetrically fixedly connected between the sliding seats and the sliding plates, and the mounting plate is symmetrically fixedly connected with bevel teeth on the side away from the welder.

[0012] Preferably, the lower end of the limit rod is fixedly connected to a push column, the welder is slidably connected to a clamping rod on the side close to the mounting plate, the welder is symmetrically rotationally connected to a torsion spring column on the side close to the clamping rod, and the outer surface of the torsion spring column is fixedly connected to a toggle rod.

[0013] Preferably, the sliding protection mechanism includes a sliding sleeve, which is arranged on the outer surface of the protective gas output pipe, a sliding block is fixedly connected to the top of the sliding sleeve, a sliding groove is provided on the outer surface of the protective gas output pipe, the sliding block is slidably connected to the sliding groove, the lower end of the sliding sleeve is rotatably connected to a cover plate, one side of the cover plate is embedded with a magnetic block 1, the lower end of the sliding sleeve is fixedly connected to a magnetic block 2, and the magnetic poles of the magnetic block 1 and the magnetic block 2 are arranged with opposite poles.

[0014] Preferably, a slide plate is slidably connected to the outer surface of the sliding sleeve, a slide column is slidably connected to the outer surface of the slide plate, a tension spring is fixedly connected between the slide column and the slide plate, and one end of the slide column close to the sliding sleeve abuts against the sliding sleeve.

[0015] Preferably, the upper end of the slide plate is slidably connected to a T-shaped rod, the upper end of the T-shaped rod is slidably connected to a counterweight block, the counterweight block is plugged into the protective gas output pipe near one end of the protective gas output pipe, and the upper end of the slide plate is symmetrically fixedly connected to an elastic block, which is clamped to the lower end of the T-shaped rod.

[0016] A method for using a laser welding machine for high-precision steel includes the following steps:

[0017] Step 1: Prepare the required welding workpiece and welding equipment before welding;

[0018] Step 2: Laser welding the prepared welding workpiece;

[0019] Step 3: Check and sort the workpiece and equipment after welding.

[0020] The step 1 includes: firstly, the welding workpiece needs to be prepared, including cleaning and removing possible impurities such as grease, dust, etc., then according to the specifications of the material, an appropriate welding head needs to be selected, and processing and assembly are performed as required, and finally, the parameters and process parameters of the laser welding equipment are determined, including power, focal length, and scanning speed;

[0021] The step 2 includes: when performing laser welding through a welder, first, the workpiece prepared in step 1 needs to be placed on the upper surface of the machine body for correct positioning and fixing to ensure the accuracy and stability of the welding position, and then, through the set welding parameters, the laser beam is focused on the weld to perform welding. The laser energy will generate high temperature in the welding area, melt the welding material, and form a weld. During the welding process, the relative position of the laser welding head and the weld needs to be kept stable to ensure the welding quality.

[0022] The step three comprises: first, inspecting and evaluating the weld of the workpiece welded in step two, and non-destructive testing methods including X-ray and ultrasonic testing can be used to check whether the weld is complete and has no defects, and the weld needs to be arranged and trimmed to meet the required size and shape to achieve high precision requirements, and then, the shielding gas output pipe is protected to prevent dust from clogging its output port when not in use, thereby affecting the next use, and the output port can be isolated from the air by covering with a sliding sleeve and a cover plate to prevent interference from dust.

[0023] Compared with the prior art, the present invention provides a laser welding machine and a laser welding method for high-precision steel, which have the following beneficial effects:

[0024] 1. When inspecting the lens, the sliding baffle can slide down instantly under the influence of gravity and block the installation port of the welder, thereby reducing the need for workers to seal the installation port with tape, reducing the risk of dust entering the installation port, and improving the cleaning or inspection speed of the welding head lens, while saving resources and reducing the inspection cost. At the same time, by pushing the sliding sheet and the sliding shell, the fixation of the welding head lens can be cancelled, saving the need for workers to use tools to remove the bolts one by one, and further improving the cleaning or inspection speed of the welding head lens;

[0025] 2. The limiting rod abuts against the front side of the welding head lens, and the clamping rod and the sliding baffle abut against the upper and lower sides of the welding head lens. By simply pushing the sliding shell, the limiting abutment operation on multiple sides of the welding head lens is realized, which improves the fixing effect of the welding head lens after installation, prevents the welding head lens from shaking or shifting after installation, improves the stability of the welding head lens during use, and is simple to operate, thereby improving the installation efficiency of the welding head lens;

[0026] 3. The lower end of the shielding gas output pipe is covered by the sliding sleeve and the cover plate, so as to protect the outlet of the shielding gas output pipe, and prevent the shielding gas output pipe from being exposed to the outside air and affected by dust particles in the air when not in use, so as to reduce the contact between the dust in the air and the shielding gas output pipe, thereby reducing the frequency of cleaning or maintenance of the shielding gas output pipe, reducing the cleaning cost, and ensuring the stable progress of laser welding;

[0027] 4. The covering of the lower end of the protective gas output pipe by the sliding sleeve and the cover plate can block the impact of external force, thereby preventing the protective gas output pipe from being twisted and deformed due to external impact when not in use, ensuring the stability of the protective gas output pipe during operation, reducing the risk of wear or damage to the protective gas output pipe when not in use, and improving the durability of the protective gas output pipe;

[0028] 5. By setting the counterweight block, inertia applies pressure to the slide plate through the counterweight block and pushes the slide plate to slide. Under the action of the slide column and the tension spring, the cover plate is automatically closed, making it more convenient to close. At the same time, the suction force of the second and first magnetic blocks makes the cover plate more firmly closed, ensuring the protective effect of the sliding sleeve and the cover plate on the protective gas output pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 It is a partial three-dimensional structural diagram of the regulating arm of the present invention;

[0031] Figure 3 It is a partial three-dimensional structural diagram of the welding head of the present invention;

[0032] Figure 4 This is a transverse cross-sectional structural diagram of the mounting plate of the present invention;

[0033] Figure 5 This is a three-dimensional structural diagram of the middle part of the welding head of the present invention;

[0034] Figure 6 This is a structural diagram of the welding head lens of the present invention when it is taken out;

[0035] Figure 7 This is a three-dimensional structural diagram of the bottom of the adjusting arm of the present invention;

[0036] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0037] Fig. 9 This is a partial three-dimensional structural diagram of the protective gas output pipe of the present invention;

[0038] Fig.10 It is a partial three-dimensional structural diagram of the sliding sleeve of the present invention.

[0039] In the figure:

[0040] 1. Machine body; 2. Adjustment arm; 3. Welding machine; 31. Welding head lens; 32. Support arm; 33. Shielding gas output pipe;

[0041] 4. Mounting plate; 401. Sliding shell; 402. Limit rod; 403. Guide column; 404. Stop rod; 405. Fixing plate; 406. Guide inclined groove; 407. Insertion hole; 408. Sliding baffle; 409. Sliding sheet; 410. Sliding seat; 411. Clamping teeth; 412. Spring rod; 413. Oblique teeth; 414. Push column; 415. Clamping rod; 416. Toggle rod;

[0042] 501, sliding sleeve; 502, sliding block; 503, sliding groove; 504, cover plate; 505, magnetic block 1; 506, magnetic block 2; 507, sliding plate; 508, sliding column; 509, tension spring; 510, T-bar; 511, counterweight block; 512, elastic block. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0045] Embodiment 1 of the present invention

[0046] Please refer to Figures 1 to 6 As shown:

[0047] In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a laser welding machine for high-precision steel and a laser welding method thereof, comprising a machine body 1, an adjusting arm 2 is fixedly connected to one side of the machine body 1, a welder 3 is fixedly connected to the top of the adjusting arm 2, a welding head lens 31 is plugged into one side of the welder 3, a supporting arm 32 is fixedly connected to one side of the welder 3, and a protective gas output pipe 33 is fixedly connected to one end of the supporting arm 32 away from the welder 3. A laser welding machine for high-precision steel and a laser welding method thereof include: a shielding protection mechanism and a sliding protection mechanism, wherein the shielding protection mechanism is located above the sliding protection mechanism;

[0048] The shielding protection mechanism is used for fixing and disassembling the welding head lens 31;

[0049] The sliding protection mechanism is used to protect the protective gas output pipe 33 from dust accumulation during use.

[0050] The shielding and protection mechanism includes a mounting plate 4, which is fixedly connected to one side of the welder 3. The mounting plate 4 is symmetrically slidably connected to a sliding shell 401 on the side away from the welder 3. A limit rod 402 is slidably connected inside the sliding shell 401. The limit rod 402 penetrates the sliding shell 401. A guide column 403 is fixedly connected to the top of the limit rod 402. A stop rod 404 is fixedly connected to the side of the limit rod 402 close to the mounting plate 4. The stop rod 404 can movably penetrate the sliding shell 401. A fixing plate 405 is fixedly connected to the upper end of the mounting plate 4. A guide inclined groove 406 is symmetrically penetrated at the top of the fixing plate 405. The guide column 403 penetrates and slides through the guide inclined groove 406. A sliding baffle 408 is slidably connected to the bottom of the mounting plate 4. The mounting plate 4 penetrates through an opening on the side away from the welder 3. A plug hole 407 is provided, and the abutting rod 404 can penetrate the plug hole 407 and abut against the sliding baffle 408. The two sliding shells 401 are slidably connected to the side away from each other with a sliding sheet 409, and the side of the sliding sheet 409 away from the sliding shell 401 is slidably connected to a sliding seat 410 through a square groove. The outer side of the sliding seat 410 is fixedly connected with a latch tooth 411, and a spring rod 412 is symmetrically fixedly connected between the sliding seat 410 and the sliding sheet 409. The side of the mounting plate 4 away from the welder 3 is symmetrically fixedly connected with a helical tooth 413, and the lower end of the limiting rod 402 is fixedly connected with a push column 414, and the side of the welder 3 close to the mounting plate 4 is slidably connected with a clamping rod 415, and the side of the welder 3 close to the clamping rod 415 is symmetrically rotatably connected with a torsion spring column, and the outer surface of the torsion spring column is fixedly connected with a toggle rod 416;

[0051] Wherein: the oblique teeth 413 are arranged in a right triangle shape, the oblique surface of which can push the latch teeth 411 to slide, and the vertical surface can prevent the latch teeth 411 from sliding.

[0052] In the prior art, when the welding head lens 31 is replaced, it is mostly done by manually holding tools and turning multiple bolts to complete the disassembly of the lens, which is rather cumbersome. During replacement, since the lens needs to be removed from the welding head, a gap will appear at the lens mounting position on the welding head. At this time, in order to prevent dust in the air from entering the mounting port, it is necessary to manually seal the mounting port with tape, and then clean and repair the removed lens, resulting in some tape being wasted each time the lens is disassembled. At the same time, the tape needs to be taken away each time, which slows down the sealing speed and affects the cleaning or repair speed of the welding head lens 31. Compared with the prior art, the implementation of this embodiment reduces the operation of the staff using tape to seal the mounting port, improves the cleaning or repair speed of the welding head lens 31, saves resources, and reduces the repair cost. At the same time, by pushing the sliding sheet 409 and the sliding shell 401, the fixation of the welding head lens 31 can be canceled, saving the staff the operation of using tools to remove the bolts one by one, and further improving the cleaning or repair speed of the welding head lens 31.

[0053] For further examples, please refer to Figures 7 to 10 As shown:

[0054] The sliding protection mechanism includes a sliding sleeve 501, which is sleeved on the outer surface of the protective gas output pipe 33. The top of the sliding sleeve 501 is fixedly connected with a slider 502. The outer surface of the protective gas output pipe 33 is provided with a slide groove 503. The slider 502 is slidably connected to the slide groove 503. The lower end of the sliding sleeve 501 is rotatably connected with a cover plate 504. A magnetic block 1 505 is embedded on one side of the cover plate 504. The lower end of the sliding sleeve 501 is fixedly connected with a magnetic block 2 506. The magnetic poles of the magnetic block 1 505 and the magnetic block 2 506 are arranged oppositely. The outer surface of the sliding sleeve 501 is slidably connected with a slide plate 507. The outer surface of the slide plate 507 is penetrated by a sliding column 508 in sliding connection, and a tension spring 509 is fixedly connected between the sliding column 508 and the slide plate 507. The sliding column 508 is close to the sliding sleeve 501 and abuts against the sliding sleeve 501. The upper end of the slide plate 507 is slidably connected to a T-shaped rod 510, and the upper end of the T-shaped rod 510 is penetrated by a counterweight block 511 in sliding connection. The counterweight block 511 is plugged into the protective gas output pipe 33 at one end thereof. The upper end of the slide plate 507 is symmetrically fixedly connected to an elastic block 512, and the elastic block 512 is clamped with the lower end of the T-shaped rod 510;

[0055] Wherein: the counterweight block 511 is provided, and when it is disconnected from the outer wall of the protective gas output pipe 33 and plugged in, it can ensure sufficient pressure on the T-shaped rod 510 and the slide plate 507 by utilizing inertia and its weight.

[0056] In the prior art, when the shielding gas output pipe 33 is not in use, dust particles in the air may gather at one end of the nozzle. The long-term accumulation may cause the nozzle outlet end to be blocked, which results in the shielding gas nozzle needing to be frequently cleaned or repaired, increasing maintenance costs and affecting the laser welding work. Compared with the prior art, the implementation of this embodiment prevents the shielding gas output pipe 33 from being affected by dust particles in the outside air when it is not in use, causing the shielding gas output pipe 33 to be blocked. This reduces the contact between the dust in the air and the shielding gas output pipe 33, thereby reducing the frequency of cleaning or repair of the shielding gas output pipe 33 and reducing the cleaning cost, while ensuring the stable progress of laser welding.

[0057] Embodiment 2

[0058] A method for using a laser welding machine for high-precision steel includes the following steps:

[0059] Step 1: Prepare the required welding workpiece and welding equipment before welding;

[0060] Step 2: Laser welding the prepared welding workpiece;

[0061] Step 3: Check and sort the workpiece and equipment after welding.

[0062] Step 1 includes: first, the welding workpiece needs to be prepared, including cleaning and removing possible impurities such as grease, dust, etc. Next, according to the specifications of the material, the appropriate welding head should be selected, and processing and assembly should be performed as needed. Finally, the parameters and process parameters of the laser welding equipment, including power, focal length, and scanning speed, should be determined;

[0063] Step 2 includes: when laser welding is performed by the welder 3, first, the workpiece prepared in step 1 needs to be placed on the upper surface of the machine body 1 for correct positioning and fixing to ensure the accuracy and stability of the welding position, and then, through the set welding parameters, the laser beam is focused on the weld to perform welding. The laser energy will generate high temperature in the welding area to melt the welding material and form a weld. During the welding process, the relative position between the laser welding head and the weld needs to be kept stable to ensure the welding quality;

[0064] Step three includes: first, inspect and evaluate the welds of the workpieces welded in step two. Non-destructive testing methods, including X-rays and ultrasound, can be used to check whether the welds are complete and have defects. At the same time, the welds need to be arranged and trimmed to meet the required size and shape to achieve high precision requirements. Then, the protective gas output pipe 33 is protected to prevent dust from clogging its output port when not in use, thereby affecting the next use. The output port can be isolated from the air by covering the sliding sleeve 501 and the cover plate 504 to prevent interference from dust.

[0065] Everything in the above example works like this:

[0066] In the initial state: when the sliding shell 401 is located at the left and right ends of the mounting plate 4, the sliding shell 401 has not yet slid close to each other. At this time, the abutment rod 404 has not yet penetrated the sliding shell 401 and the insertion hole 407, nor has it abutted against the sliding baffle 408. Under the influence of gravity, the bottom of the sliding baffle 408 is in contact with the welding head lens 31, and the spring rod 412 is in a normal state. The toggle rod 416 is rotatably connected to the welder 3 through the torsion spring column, and supported by the torsion spring column, the toggle rod 416 is in an inclined state, and the tension spring 509 is in a stretched state, but under the obstruction of the sliding sleeve 501, the tension spring 509 cannot drive the sliding column 508 to slide in the direction of the sliding sleeve 501.

[0067] The following is the working process of the shielding protection mechanism for fixing and removing the welding head lens 31:

[0068] When the welding head lens 31 is being installed, after the welding head lens 31 is inserted into the installation port of the welder 3, the staff can manually slide the sliding shell 401 so that the sliding shell 401 slides on the outside of the mounting plate 4 and approaches each other. When the sliding shells 401 approach each other, the sliding shells 401 drive the limiting rods 402 to approach each other, and at the same time, the limiting rods 402 slide to the front side of the welding head lens 31. When the limiting rods 402 slide, the guide posts 403, under the guidance of the guide bevel grooves 406, drive the limiting rods 402 to slide in the sliding shell 401 toward the welding head lens 31. At the same time, in the process of the limiting rods 402 sliding close to each other, driven by the guide posts 403, The limiting rod 402 drives the resisting rod 404 to gradually penetrate the sliding shell 401 and the insertion hole 407. When the limiting rod 402 slides toward the welding head lens 31 and contacts the welding head lens 31, the resisting rod 404 contacts the sliding baffle 408 at the same time. At the same time, when the sliding shells 401 approach each other, they gradually approach the bevel gear 413. When the sliding shell 401 passes the bevel gear 413, the latch gear 411 approaches the bevel gear 413. At this time, under the push of the inclined surface of the bevel gear 413, the latch gear 411 and the sliding seat 410 will slide in the opposite direction of the bevel gear 413, and the spring rod 412 will be compressed. Then, at the moment when the latch gear 411 and the bevel gear 413 are offset, under the rebound of the spring rod 412 , which will drive the sliding seat 410 and the latch tooth 411 to reset, and make the latch tooth 411 contact the vertical surface of the bevel tooth 413. At this time, under the limitation of the vertical surface of the bevel tooth 413, the latch tooth 411 cannot slide back, so that the sliding shell 401 cannot slide back, thereby improving the abutment effect between the abutting rod 404 and the sliding baffle 408, and the abutment effect of the sliding shell 401 on the welding head lens 31. At the same time, when the limiting rods 402 approach each other and abut against the welding head lens 31, the limiting rod 402 gradually approaches the toggle rod 416 and pushes the lower end of the toggle rod 416, so that the toggle rod 416 and the torsion spring column rotate at the same time, and the upper end of the toggle rod 416 approaches the clamping rod 415. The arc-shaped movement during rotation pushes the clamping rod 415 to slide upward, so that the clamping rod 415 completes the abutment against the lower end of the bevel tooth 413, and then the limiting rod 402 abuts against the front side of the welding head lens 31, and the clamping rod 415 and the sliding baffle 408 abut against the upper and lower sides of the welding head lens 31. By simply pushing the sliding shell 401, the abutment for limiting the position of multiple sides of the welding head lens 31 is achieved, thereby improving the fixing effect of the welding head lens 31 after installation, preventing the welding head lens 31 from shaking or deviating after installation, and improving the stability of the welding head lens 31 during use. At the same time, the operation is simple, and the installation efficiency of the welding head lens 31 is improved.

[0069] Furthermore, when the welding head lens 31 needs to be disassembled, the staff can first push the sliding plate 409 upwards, so that the sliding plate 409 drives the latch tooth 411 to move upwards, and then the latch tooth 411 is staggered with the bevel tooth 413, so that the sliding shell 401 can slide back, so that the sliding shells 401 are separated from each other. At this time, under the guidance of the guide bevel groove 406, the limit rod 402 gradually cancels the abutment against the welding head lens 31, and at the same time, the abutment rod 404 cancels the abutment against the sliding baffle 408, and the push column 414 cancels the push on the toggle rod 416. At this time, under the rebound of the torsion spring column, the toggle rod 416 and the clamping rod 415 are reset, and the clamping rod 415 also cancels the abutment against the lower side of the welding head lens 31. At this time, the welding head lens 31 can be pulled outward, and because the abutment rod 404 cancels the abutment against the sliding baffle 408 The welding head lens 31 is connected to the welding head lens 31 by sliding on the sliding baffle plate 408, and when the staff pulls and takes out the welding head lens 31 from the outer surface of the welding device 3, the sliding baffle plate 408 loses the support on the lower side of the welding head lens 31. When the welding head lens 31 is taken out, the sliding baffle plate 408 slides down instantly under the influence of gravity and blocks the mounting port of the welding device 3, thereby reducing the operation of the staff to seal the mounting port with adhesive tape, improving the cleaning or maintenance speed of the welding head lens 31, saving resources and reducing maintenance costs. At the same time, by pushing the sliding sheet 409 and the sliding shell 401, the fixing of the welding head lens 31 can be cancelled, saving the staff the operation of using tools to remove the bolts one by one, and further improving the cleaning or maintenance speed of the welding head lens 31.

[0070] Please refer to the above working process Figures 1 to 6 .

[0071] The following is the working process of the sliding protection mechanism for protecting the protective gas output pipe 33 from dust accumulation and interference from external factors during use:

[0072] Furthermore, when the protective gas output pipe 33 is not in use, the counterweight 511 is pulled so that the counterweight 511 is disengaged from the plug-in connection with the protective gas output pipe 33. At this time, the sliding sleeve 501 loses the limit of the counterweight 511 and the protective gas output pipe 33, and is affected by gravity. At the same time, under the guidance of the slider 502 and the slide groove 503, the sliding sleeve 501 will begin to slide downward. When the slider 502 slides to the lower end of the slide groove 503, the slider 502 and the sliding sleeve 501 stop sliding. At the same time, the slider 502 is located on the outer surface of the air outlet at the lower end of the protective gas output pipe 33. At the same time, when the sliding sleeve 501 stops sliding, the counterweight 511 is affected by inertia and exerts a certain pressure on the T-bar 510, so that under the pressure of the T-bar 510, the elastic block 51 2 is deformed and disengaged from the clamping connection with the T-shaped rod 510, so that the T-shaped rod 510 continues to slide downward, and when the T-shaped rod 510 slides to the bottom of the slideway at the upper end of the slide plate 507, it stops sliding. At the same time, the pressure exerted by the counterweight block 511 due to the inertia is transmitted to the slide plate 507 through the T-shaped rod 510. The pressure exerted by the inertia makes the slide plate 507 overcome the friction force generated by the contact between the slide column 508 and the sliding sleeve 501 and start to slide downward. When the lower end of the slide plate 507 slides to the side of the cover plate 504, one end of the slide column 508 loses the limit of the sliding sleeve 501. At this time, since the tension spring 509 is in a stretched state, the slide column 508 can be driven to penetrate the slide plate 507 and push the cover plate 504 to rotate under the rebound of the tension spring 509, so that The cover plate 504 drives the first magnetic block 505 to approach the second magnetic block 506, and then the cover plate 504 automatically closes the lower end of the sliding sleeve 501 under the suction force of the second magnetic block 506 and the first magnetic block 505, and the sliding sleeve 501 and the cover plate 504 cover the lower end of the protective gas output pipe 33, thereby completing the protection of the air outlet at the lower end of the protective gas output pipe 33, and preventing the protective gas output pipe 33 from being exposed to the outside air when not in use and being affected by dust particles in the air, thereby reducing the contact between dust in the air and the protective gas output pipe 33, thereby reducing the frequency of cleaning or maintenance of the protective gas output pipe 33 and reducing the cleaning cost. At the same time, the stability of laser welding is guaranteed. Through the setting of the counterweight block 511, inertia exerts pressure on the slide plate 507 through the counterweight block 511 and pushes the slide plate 507 to slide, so that the cover plate 504 is automatically closed under the action of the slide column 508 and the tension spring 509, making it more convenient to close. At the same time, through the suction force of the second magnetic block 506 and the first magnetic block 505, the cover plate 504 is more firmly closed when closed, ensuring the protective effect of the sliding sleeve 501 and the cover plate 504 on the protective gas output pipe 33. At the same time, the covering of the lower end of the protective gas output pipe 33 by the sliding sleeve 501 and the cover plate 504 can block the impact of external force, thereby preventing the protective gas output pipe 33 from being subjected to external force impact and distortion when not in use.The stability of the protective gas output pipe 33 during operation is ensured, the risk of wear or damage of the protective gas output pipe 33 when not in use is reduced, and the durability of the protective gas output pipe 33 is improved;

[0073] Please refer to the above working process Figures 7 to 10 .

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding machine for high-precision steel, comprising a machine body (1), one side of the machine body (1) is fixedly connected to an adjusting arm (2), the top of the adjusting arm (2) is penetrated and fixedly connected to a welder (3), one side of the welder (3) is plugged with a welding head lens (31), one side of the welder (3) is fixedly connected to a supporting arm (32), and one end of the supporting arm (32) away from the welder (3) is fixedly connected to a protective gas output pipe (33), characterized in that: The laser welding machine for high-precision steel comprises: a shielding protection mechanism and a sliding protection mechanism, wherein the shielding protection mechanism is located above the sliding protection mechanism; The shielding and protection mechanism is used for fixing and disassembling the welding head lens (31); The sliding protection mechanism is used to protect the protective gas output pipe (33) to avoid dust accumulation when in use.

2. The laser welding machine for high-precision steel according to claim 1, characterized in that: The shielding protection mechanism comprises a mounting plate (4), the mounting plate (4) being fixedly connected to a side wall of the welder (3), the mounting plate (4) being symmetrically slidably connected to a sliding shell (401) on a side away from the welder (3), a limiting rod (402) being slidably connected inside the sliding shell (401), the limiting rod (402) passing through the sliding shell (401), a guide column (403) being fixedly connected to the top of the limiting rod (402), a stop rod (404) being fixedly connected to a side of the limiting rod (402) close to the mounting plate (4), the stop rod (404) being ) can movably penetrate the sliding shell (401), the upper end of the mounting plate (4) is fixedly connected with a fixing plate (405), the top of the fixing plate (405) is symmetrically penetrated with a guide bevel (406), the guide column (403) is slidably penetrated in the guide bevel (406), the bottom of the mounting plate (4) is slidably penetrated with a sliding baffle (408), the side of the mounting plate (4) away from the welder (3) is penetrated with a socket (407), and the abutment rod (404) can penetrate the socket (407) and abut against the sliding baffle (408).

3. The laser welding machine for high-precision steel according to claim 2, characterized in that: The two sliding shells (401) are slidably connected to a sliding sheet (409) on the side away from the sliding shell (401), and the sliding sheet (409) is slidably connected to a sliding seat (410) through a square groove on the side away from the sliding shell (401). The outer side of the sliding seat (410) is fixedly connected with a latch tooth (411), and a spring rod (412) is symmetrically fixedly connected between the sliding seat (410) and the sliding sheet (409), and the side of the mounting plate (4) away from the welder (3) is symmetrically fixedly connected with a bevel tooth (413).

4. The laser welding machine for high-precision steel according to claim 3, characterized in that: The lower end of the limiting rod (402) is fixedly connected to a push column (414), the side of the welder (3) close to the mounting plate (4) is slidably connected to a clamping rod (415), the side of the welder (3) close to the clamping rod (415) is symmetrically rotatably connected to a torsion spring column, and the outer surface of the torsion spring column is fixedly connected to a toggle rod (416).

5. The laser welding machine for high-precision steel according to claim 1, characterized in that: The sliding protection mechanism comprises a sliding sleeve (501), the sliding sleeve (501) is sleeved on the outer surface of the protective gas output pipe (33), a sliding block (502) is fixedly connected to the top of the sliding sleeve (501), a sliding groove (503) is provided on the outer surface of the protective gas output pipe (33), the sliding block (502) is slidingly connected to the sliding groove (503), the lower end of the sliding sleeve (501) is rotatably connected to a cover plate (504), one side of the cover plate (504) is embedded with a magnetic block 1 (505), and the lower end of the sliding sleeve (501) is fixedly connected to a magnetic block 2 (506), and the magnetic poles of the magnetic block 1 (505) and the magnetic block 2 (506) are arranged oppositely.

6. The laser welding machine for high-precision steel according to claim 5, characterized in that: The outer surface of the sliding sleeve (501) is slidably connected to a slide plate (507), and the outer surface of the slide plate (507) is slidably connected to a slide column (508), a tension spring (509) is fixedly connected between the slide column (508) and the slide plate (507), and one end of the slide column (508) close to the sliding sleeve (501) is in contact with the sliding sleeve (501).

7. The laser welding machine for high-precision steel according to claim 6, characterized in that: The upper end of the slide plate (507) is slidably connected to a T-shaped rod (510), and the upper end of the T-shaped rod (510) is penetrated and slidably connected to a counterweight block (511), and the counterweight block (511) is plugged into the protective gas output pipe (33) at one end close to the protective gas output pipe (33), and the upper end of the slide plate (507) is symmetrically fixedly connected to an elastic clamping block (512), and the elastic clamping block (512) is clamped to the lower end of the T-shaped rod (510).

8. A method for using a laser welding machine for high-precision steel as claimed in any one of claims 1 to 7, characterized in that the steps include: Step 1: Prepare the required welding workpiece and welding equipment before welding; Step 2: Laser welding the prepared welding workpiece; Step 3: Check and sort the workpiece and equipment after welding.

9. The laser welding method of a laser welding machine for high-precision steel according to claim 8, characterized in that: The step 1 includes: firstly, the welding workpiece needs to be prepared, including cleaning and removing possible impurities such as grease, dust, etc., then according to the specifications of the material, an appropriate welding head needs to be selected, and processing and assembly are performed as required, and finally, the parameters and process parameters of the laser welding equipment are determined, including power, focal length, and scanning speed; The step 2 comprises: when laser welding is performed by the welder (3), first, the workpiece prepared in the step 1 needs to be placed on the upper surface of the machine body (1) for correct positioning and fixing to ensure the accuracy and stability of the welding position; then, the laser beam is focused on the weld seam by setting welding parameters to perform welding; the laser energy will generate high temperature in the welding area to melt the welding material and form a weld seam; during the welding process, the relative position between the laser welding head and the weld seam needs to be kept stable to ensure the welding quality.

10. The laser welding method of a laser welding machine for high-precision steel according to claim 9, characterized in that: The step three comprises: first, inspecting and evaluating the weld seams of the workpieces welded in step two. Non-destructive testing methods, including X-rays and ultrasonic waves, may be used to inspect whether the weld seams are complete and have defects. The weld seams also need to be arranged and trimmed to meet the required size and shape to achieve high precision requirements. Then, the shielding gas output pipe (33) is protected to prevent dust from clogging its output port when not in use, thereby affecting the next use. The output port can be isolated from the air by covering the sliding sleeve (501) and the cover plate (504), thereby preventing interference from dust.

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