阅读说明：本技术 一种yag激光焊接设备 (YAG laser welding equipment ) 是由 不公告发明人 于 2021-07-08 设计创作，主要内容包括：本发明公开了一种YAG激光焊接设备,属于激光焊接领域,一种YAG激光焊接设备,本方案可以实现当全反射镜的温度持续升高时,石墨层将热量导流吸附在表面传导至散热鳍片上进行散热,同时热量通过进气口传导至膨胀球囊表面,使得氯化铵粉末受热分解成氨气和氯化氢,膨胀球囊膨胀,使得滑杆逐渐将闭合开关推开进行散热,同时当散热外壳内温度过高,散热鳍片散热效果达到最佳且对外排放热量时,温度还是持续升高时,高度的热量通过导热线传导至玻璃管表面,使得玻璃管内的易膨胀液体逐渐受热膨胀,使玻璃管破裂,然后套环内的冷却液通过压力释放向全反射镜得方向喷射,对全反射镜持续降温,使得全反射镜不易因温度过高导致爆裂。(The invention discloses YAG laser welding equipment, which belongs to the field of laser welding, and can realize that when the temperature of a holophote is continuously raised, a graphite layer guides and adsorbs heat to the surface to be conducted to radiating fins for radiating, meanwhile, the heat is conducted to the surface of an expansion balloon through an air inlet, ammonium chloride powder is heated and decomposed into ammonia gas and hydrogen chloride, the expansion balloon expands, a slide rod gradually pushes a closed switch to be pushed away for radiating, and when the temperature in a radiating shell is overhigh, the radiating effect of the radiating fins reaches the best and the heat is discharged outwards, and the temperature is also continuously raised, high-level heat is conducted to the surface of a glass tube through a heat conducting wire, so that easily-expandable liquid in the glass tube is gradually heated and expanded, the glass tube is broken, then cooling liquid in a sleeve ring is released to be sprayed to the direction of the holophote through pressure, the temperature of the holophote is continuously reduced, so that the holophote is not easy to burst due to overhigh temperature.)

1. YAG laser welding equipment, includes control cabinet (1), its characterized in that: the improved YAG laser device is characterized in that a fixed support frame (2) is installed on the right side of the control console (1), a welding placing table (3) is fixedly connected to the upper end of the fixed support frame (2), a laser reflection copper cavity (4) is fixedly connected to the upper end of the fixed support frame (2), the laser reflection copper cavity (4) is electrically connected with the control console (1), a light-gathering cavity (5) is embedded in the laser reflection copper cavity (4), a YAG laser crystal (6) is installed in the laser reflection copper cavity (4), a holophote (7) is fixedly connected to the left end of the YAG laser crystal (6), a reflecting film (8) is fixedly connected to the outer end of the holophote (7), a semi-reflecting mirror (9) is fixedly connected to the right end of the YAG laser crystal (6), a semi-reflecting film (10) is fixedly connected to the outer end of the semi-reflecting mirror (9), and a pump lamp (11) is installed in the laser reflection copper cavity (4), the pump lamp (11) is positioned at the lower side of the YAG laser crystal (6), and the left end of the total reflector (7) is fixedly connected with a heat dissipation device.

2. The YAG laser welding apparatus of claim 1, wherein: the heat dissipation device comprises a heat dissipation shell (12) fixedly connected with the outer end of a total reflector (7), heat dissipation fins (13) are fixedly connected between the inner walls of the heat dissipation shell (12), heat conduction carbon fibers (14) are fixedly connected between the inner walls of the heat dissipation shell (12), the heat conduction carbon fibers (14) are located at the upper ends of the heat dissipation fins (13), a graphite layer (15) is fixedly connected between the inner walls of the heat dissipation shell (12), the graphite layer (15) is located at the upper end of the heat conduction carbon fibers (14), the outer end of the heat dissipation shell (12) is rotatably connected with a closed switch (16), two air holes (17) are cut at the left end of the heat dissipation shell (12), a shell (18) is fixedly connected with the bottom end of the air holes (17), a sliding channel (19) is cut at the left end of the shell (18), and a sliding rod (20) is slidably connected in the sliding channel (19), slide bar (20) right-hand member fixedly connected with inflation sacculus (21), inflation sacculus (21) are located cover shell (18), inflation sacculus (21) intussuseption is filled with ammonium chloride powder (22), cover shell (18) right-hand member is dug has a plurality of evenly distributed's air inlet (23), fixedly connected with anti-explosion device between heat dissipation shell (12) inner wall.

3. The YAG laser welding apparatus of claim 2, characterized in that: the anti-explosion device comprises a lantern ring (24) fixedly connected with the inner wall of the heat dissipation shell (12), a glass tube (25) is embedded at the right end of the lantern ring (24), an easily-expandable liquid (26) is filled in the glass tube (25), a heat conducting line (27) is fixedly connected between the glass tube (25) and the total reflector (7), a cooling liquid (28) is filled in the lantern ring (24), a communicating pipeline (29) is fixedly connected with the right end of the lantern ring (24), and the communicating pipeline (29) is in contact with the total reflector (7).

4. The YAG laser welding apparatus of claim 2, characterized in that: the outer end of the sliding rod (20) is fixedly connected with two limiting rods (30), and the two limiting rods (30) are all in contact with the inner wall of the shell (18).

5. The YAG laser welding apparatus as recited in claim 4, wherein: the outer end of the limiting rod (30) is provided with a spherical groove, and a ball is rotationally connected in the spherical groove.

6. The YAG laser welding apparatus of claim 3, characterized in that: the easily expandable liquid (26) is a member made of kerosene.

7. The YAG laser welding apparatus of claim 2, characterized in that: a traction rope is fixedly connected between the inner cavities of the expansion sacculus (21), and the traction rope is in mutual contact with the ammonium chloride powder (22).

8. The YAG laser welding apparatus of claim 2, characterized in that: and a sealing gasket is fixedly connected to one end of the closed switch (16) close to the heat dissipation shell (12).

9. The YAG laser welding apparatus of claim 3, characterized in that: the heat conducting line (27) is a member made of heat conducting silica gel.

Technical Field

The invention relates to the field of laser welding, in particular to YAG laser welding equipment.

Background

Laser welding is a machine for processing laser materials, also commonly called as a laser welder and a laser welder, and can be divided into a laser die welding machine (a manual welder), an automatic laser welder, a laser spot welder and an optical fiber transmission laser welder according to the working mode.

At present in the laser welding machine welding process, because laser energy is higher, when laser reflection was on lens, laser can be with some energy transfer for lens, and the phenomenon that lens probably appears bursting in the course of the work, still can remain when the lens is cracked and be difficult to clear up in the welding machine, probably still can cause unexpected injury during the change.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide YAG laser welding equipment which can realize that after laser is expanded, reflected and focused in a laser reflection copper cavity, when the temperature of a holophote is continuously raised, heat is guided and adsorbed on the surface through a graphite layer, meanwhile, heat on the surface of the graphite layer is conducted to heat dissipation fins by heat conduction carbon fibers for heat dissipation, and meanwhile, the heat is conducted to the surface of an expansion balloon through an air inlet, so that ammonium chloride powder is heated and decomposed into ammonia gas and hydrogen chloride, the expansion balloon is gradually expanded, a slide rod gradually pushes a closed switch away for heat dissipation, meanwhile, when the temperature in a heat dissipation shell is overhigh, the heat dissipation effect of the heat dissipation fins reaches the best and discharges heat to the outside, and when the temperature is continuously raised, high heat is conducted to the surface of a glass tube through heat conduction wires, so that easily-expandable liquid in the glass tube is gradually heated and expanded, the glass tube is broken, then the cooling liquid in the sleeve ring is sprayed in the direction of the total reflector through pressure release, and the total reflector is continuously cooled, so that the total reflector is not easy to burst due to overhigh temperature.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

YAG laser welding equipment comprises a control console, a fixed support frame is arranged on the right side of the control console, the upper end of the fixed support frame is fixedly connected with a welding placing table, the upper end of the fixed support frame is fixedly connected with a laser reflection copper cavity, the laser reflection copper cavity is electrically connected with the console, a light-gathering cavity is embedded in the laser reflection copper cavity, a YAG laser crystal is arranged in the laser reflection copper cavity, the left end of the YAG laser crystal is fixedly connected with a holophote, the outer end of the total reflector is fixedly connected with a reflecting film, the right end of the YAG laser crystal is fixedly connected with a half reflector, the outer end of the semi-reflecting mirror is fixedly connected with a semi-reflecting film, a pump lamp is arranged in the laser reflecting copper cavity, the pump lamp is positioned at the lower side of the YAG laser crystal, the left end of the holophote is fixedly connected with a heat dissipation device, the pump lamp is a xenon lamp, and a laser power supply firstly pre-burns the pulse xenon lamp;

the pulse xenon lamp is discharged by a laser power supply, so that the xenon lamp generates light waves with certain frequency and pulse width, the light waves irradiate the YAG laser crystal through a light-gathering cavity, the YAG laser crystal is excited to generate laser, the laser passes through a resonant cavity to generate pulse laser with the wavelength of 1064nm, the laser is radiated to the surface of a workpiece after beam expansion, reflection and focusing, the workpiece is locally melted to realize welding, the frequency, the pulse width, the moving speed and the moving direction of the workbench of the pulse laser required during welding can be controlled by a control console, the energy of the laser is controlled by adjusting the current, the frequency and the pulse width of the laser, the workpiece can be subjected to spot welding, butt welding, stitch welding, seal welding and the like, and meanwhile, the depth-width ratio is high, the width of a welding line is small, the deformation area is small, the welding speed is high, the welding line is smooth.

Further, the heat dissipation device comprises a heat dissipation shell fixedly connected with the outer end of the holophote, heat dissipation fins are fixedly connected between the inner walls of the heat dissipation shell, heat conduction carbon fibers are fixedly connected between the inner walls of the heat dissipation shell, the heat conduction carbon fibers are positioned at the upper ends of the heat dissipation fins, a graphite layer is fixedly connected between the inner walls of the heat dissipation shell, the graphite layer is positioned at the upper ends of the heat conduction carbon fibers, the outer end of the heat dissipation shell is rotatably connected with a closed switch, the left end of the heat dissipation shell is provided with two air holes, the bottom ends of the air holes are fixedly connected with a shell, the left end of the shell is provided with a sliding channel, a sliding rod is slidably connected in the sliding channel, the right end of the sliding rod is fixedly connected with an expansion balloon, the expansion balloon is positioned in the shell, the expansion balloon is filled with ammonium chloride powder, and the right end of the shell is provided with a plurality of uniformly distributed air inlets, an anti-explosion device is fixedly connected between the inner walls of the heat dissipation shells;

when laser is expanded, reflected and focused in the laser reflection copper cavity, and the temperature of the holophote is continuously raised, heat is guided and adsorbed on the surface through the graphite layer, meanwhile, heat on the surface of the graphite layer is conducted to the heat dissipation fins by the heat conduction carbon fibers for heat dissipation, when the welding power is overhigh, the heat dissipation efficiency of the heat dissipation fins reaches the best, and when the temperature in the heat dissipation shell is still higher, the heat is conducted to the surface of the expansion balloon through the air inlet, so that ammonium chloride powder is heated and decomposed into ammonia gas and hydrogen chloride, the expansion balloon is gradually expanded to drive the slide bar to push outwards, the slide bar pushes the closed switch away gradually, hot gas in the heat dissipation shell is discharged in a certain amount for heat dissipation, and when the temperature is reduced, the expansion balloon retracts to drive the slide bar to retract into the shell, so that external dust is not easy to enter the heat dissipation shell, and the heat dissipation effect of the heat dissipation fins is not easy to reduce, meanwhile, when the temperature in the radiating shell is too high, the radiating effect of the radiating fins reaches the best and the heat is discharged outwards, and the temperature is continuously increased, emergency measures are also arranged in the radiating shell.

Further, the anti-burst device comprises a lantern ring fixedly connected with the inner wall of the heat dissipation shell, a glass tube is embedded and installed at the right end of the lantern ring, the glass tube is filled with easily-expandable liquid, a heat conducting line is fixedly connected between the glass tube and the holophote, cooling liquid is filled in the lantern ring, a communicating pipeline is fixedly connected at the right end of the lantern ring, and the communicating pipeline is in contact with the holophote;

when the temperature in the radiating shell is too high, the radiating effect of the radiating fins reaches the best and the heat is discharged outwards, and the temperature is continuously raised, the high heat is conducted to the surface of the glass tube through the heat conducting wires, so that the easily-expandable liquid in the glass tube is gradually heated and expanded to break the glass tube, then the cooling liquid in the sleeve ring is released through pressure to be sprayed towards the direction of the total reflector, the total reflector is continuously cooled, and the total reflector is not easy to burst due to the too high temperature.

Further, two gag lever posts of slide bar outer end fixedly connected with, two the gag lever post all contacts with the cover shell inner wall, through setting up the gag lever post, can carry out certain spacing to the slide bar, makes in the slide bar is difficult for breaking away from the cover shell, guarantees the normal function of work.

Further, the gag lever post outer end is excavated there is spherical groove, the spherical inslot internal rotation is connected with the ball, through setting up spherical groove and ball, can make the slide bar gliding more smooth in the cover shell, makes heat exhaust faster.

Furthermore, the easily-expandable liquid is a component made of kerosene, and due to the fact that the kerosene is arranged, the kerosene is high in thermal conductivity due to thermal expansion, the easily-expandable liquid expands by heating to burst the glass tube more quickly, and the total reflection mirror can be cooled rapidly.

Further, fixedly connected with haulage rope between the inflation sacculus inner chamber, haulage rope and ammonium chloride powder contact each other, through setting up the haulage rope, when can making the ammonium chloride powder receive the thermal energy, the haulage rope stirs the ammonium chloride powder, makes the ammonium chloride powder be heated more fast that decomposes, inflation sacculus inflation speed is accelerated.

Further, the one end fixedly connected with that closed switch is close to the heat dissipation shell is sealed to fill up, through setting up sealed the pad, can make closed switch laminating heat dissipation shell outer wall during tighter, the dust is difficult for getting into in the heat dissipation shell, causes the damage to the part in the heat dissipation shell.

Further, the heat conduction line adopts the component that heat conduction silica gel made, through setting up heat conduction silica gel, can make heat conduction to glass pipe efficiency better, simultaneously because of toughness material, is difficult for resulting in the fracture because of the high temperature.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme can realize that when the temperature of the holophote is continuously raised after laser is expanded, reflected and focused in the laser reflection copper cavity, heat is guided and adsorbed on the surface through the graphite layer, meanwhile, heat on the surface of the graphite layer is conducted to the heat dissipation fins by the heat conduction carbon fibers for heat dissipation, and simultaneously, the heat is conducted to the surface of the expansion ball bag through the air inlet, so that ammonium chloride powder is heated and decomposed into ammonia gas and hydrogen chloride, the expansion ball bag is gradually expanded, the slide rod gradually pushes the closed switch open for heat dissipation, and when the temperature in the heat dissipation shell is overhigh, the heat dissipation effect of the heat dissipation fins reaches the best and discharges heat outwards, and the temperature is continuously raised, high heat is conducted to the surface of the glass tube through the heat conduction lines, so that easily-expandable liquid in the glass tube is gradually heated and expanded, the glass tube is broken, and then the cooling liquid in the lantern ring is released to be sprayed to the direction of the holophote through pressure, the temperature of the holophote is continuously reduced, so that the holophote is not easy to burst due to overhigh temperature.

(2) The heat dissipation device comprises a heat dissipation shell fixedly connected with the outer end of the holophote, heat dissipation fins are fixedly connected between the inner walls of the heat dissipation shell, heat conduction carbon fibers are fixedly connected between the inner walls of the heat dissipation shell, the heat conduction carbon fibers are positioned at the upper ends of the heat dissipation fins, a graphite layer is fixedly connected between the inner walls of the heat dissipation shell, the upper end of each heat conduction carbon fiber is positioned at the upper end of each heat conduction carbon fiber, the outer end of the heat dissipation shell is rotatably connected with a closed switch, the left end of the heat dissipation shell is provided with two air holes, the bottom ends of the air holes are fixedly connected with a shell, the left end of the shell is provided with a sliding channel, a slide bar is slidably connected in the sliding channel, the right end of the slide bar is fixedly connected with an expansion balloon, the expansion balloon is positioned in the shell, ammonium chloride powder is filled in the expansion balloon, the right end of the shell is provided with a plurality of uniformly distributed air inlets, and an anti-burst device is fixedly connected between the inner walls of the heat dissipation shell;

when laser is expanded, reflected and focused in the laser reflection copper cavity, and the temperature of the holophote is continuously raised, heat is guided and adsorbed on the surface through the graphite layer, meanwhile, heat on the surface of the graphite layer is conducted to the heat dissipation fins by the heat conduction carbon fibers for heat dissipation, when the welding power is overhigh, the heat dissipation efficiency of the heat dissipation fins reaches the best, and when the temperature in the heat dissipation shell is still higher, the heat is conducted to the surface of the expansion balloon through the air inlet, so that ammonium chloride powder is heated and decomposed into ammonia gas and hydrogen chloride, the expansion balloon is gradually expanded to drive the slide bar to push outwards, the slide bar pushes the closed switch away gradually, hot gas in the heat dissipation shell is discharged in a certain amount for heat dissipation, and when the temperature is reduced, the expansion balloon retracts to drive the slide bar to retract into the shell, so that external dust is not easy to enter the heat dissipation shell, and the heat dissipation effect of the heat dissipation fins is not easy to reduce, meanwhile, when the temperature in the radiating shell is too high, the radiating effect of the radiating fins reaches the best and the heat is discharged outwards, and the temperature is continuously increased, emergency measures are also arranged in the radiating shell.

(3) The anti-burst device comprises a lantern ring fixedly connected with the inner wall of the radiating shell, a glass tube is embedded and installed at the right end of the lantern ring, easily expandable liquid is filled in the glass tube, a heat conducting line is fixedly connected between the glass tube and the holophote, cooling liquid is filled in the lantern ring, and a communicating pipeline is fixedly connected at the right end of the lantern ring and is in contact with the holophote;

when the temperature in the radiating shell is too high, the radiating effect of the radiating fins reaches the best and the heat is discharged outwards, and the temperature is continuously raised, the high heat is conducted to the surface of the glass tube through the heat conducting wires, so that the easily-expandable liquid in the glass tube is gradually heated and expanded to break the glass tube, then the cooling liquid in the sleeve ring is released through pressure to be sprayed towards the direction of the total reflector, the total reflector is continuously cooled, and the total reflector is not easy to burst due to the too high temperature.

(4) Two gag lever posts of slide bar outer end fixedly connected with, two gag lever posts all contact with the cover shell inner wall, through setting up the gag lever post, can carry out certain spacing to the slide bar, make the slide bar be difficult for breaking away from in the cover shell, guarantee the normal function of work.

(5) The utility model discloses a slide bar, including the slide bar, the slide bar is fixed on the shell, the gag lever post outer end is excavated there is spherical groove, and spherical inslot rotation is connected with the ball, through setting up spherical groove and ball, can make the slide bar gliding more smooth in the shell, makes heat exhaust faster.

(6) The easy-expansion liquid is a component made of kerosene, and due to the fact that the kerosene is high in thermal conductivity of heated expansion, the easy-expansion liquid can expand the glass tube more quickly due to heating expansion, and the total reflection mirror can be cooled rapidly.

(7) Fixedly connected with haulage rope between the inflation sacculus inner chamber, haulage rope and ammonium chloride powder contact each other, through setting up the haulage rope, when can making ammonium chloride powder receive the thermal energy, the haulage rope stirs ammonium chloride powder, makes ammonium chloride powder be heated more fast that decomposes, inflation sacculus inflation speed is accelerated.

(8) The one end fixedly connected with that closed switch is close to the heat dissipation shell is sealed to fill up, through setting up sealed the pad, can make closed switch laminating heat dissipation shell outer wall during tighter, and the dust is difficult for getting into in the heat dissipation shell, causes the damage to the part in the heat dissipation shell.

(9) The heat conduction line adopts the component that heat conduction silica gel made, through setting up heat conduction silica gel, can make heat conduction to glass pipe efficiency better, simultaneously because of tough material, is difficult for resulting in the fracture because of the high temperature.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a schematic diagram of the structure within a laser-reflective copper cavity of the present invention;

FIG. 3 is a schematic structural diagram of a heat dissipation housing according to the present invention;

FIG. 4 is a schematic view of a portion of the heat dissipation housing of the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 4;

FIG. 6 is a schematic structural view of a graphite layer of the present invention;

FIG. 7 is a schematic structural view of a thermally conductive carbon fiber according to the present invention;

fig. 8 is a schematic structural view of a heat sink fin according to the present invention;

fig. 9 is a schematic view of the structure inside the case of the present invention.

The reference numbers in the figures illustrate:

the device comprises a control console 1, a fixed support frame 2, a welding placing table 3, a laser reflection copper cavity 4, a light gathering cavity 5, a YAG laser crystal 6, a total reflection mirror 7, a reflection film 8, a semi-reflection mirror 9, a semi-reflection film 10, a pump lamp 11, a heat dissipation shell 12, a heat dissipation fin 13, heat conduction carbon fibers 14, a graphite layer 15, a closed switch 16, air vents 17, a casing 18, a sliding channel 19, a sliding rod 20, an expansion balloon 21, ammonium chloride powder 22, an air inlet 23, a lantern ring 24, a glass tube 25, easily expandable liquid 26, a heat conduction line 27, cooling liquid 28, a communicating pipeline 29 and a limiting rod 30.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-3, a YAG laser welding device includes a console 1, a fixed support frame 2 is installed on the right side of the console 1, a welding placing table 3 is fixedly connected to the upper end of the fixed support frame 2, a laser reflection copper cavity 4 is fixedly connected to the upper end of the fixed support frame 2, the laser reflection copper cavity 4 is electrically connected to the console 1, a light-gathering cavity 5 is embedded in the laser reflection copper cavity 4, a YAG laser crystal 6 is installed in the laser reflection copper cavity 4, a total reflection mirror 7 is fixedly connected to the left end of the YAG laser crystal 6, a reflection film 8 is fixedly connected to the outer end of the total reflection mirror 7, a half reflection mirror 9 is fixedly connected to the right end of the YAG laser crystal 6, a half reflection film 10 is fixedly connected to the outer end of the half reflection mirror 9, a pump lamp 11 is installed in the laser reflection copper cavity 4, the pump lamp 11 is located on the lower side of the YAG laser crystal 6, a heat dissipation device is fixedly connected to the left end of the total reflection mirror 7, the pump lamp is a xenon lamp, firstly, pre-burning a pulse xenon lamp by a laser power supply;

the pulse xenon lamp is discharged by a laser power supply, so that the xenon lamp generates light waves with certain frequency and pulse width, the light waves irradiate the YAG laser crystal through a light-gathering cavity, the YAG laser crystal is excited to generate laser, the laser passes through a resonant cavity to generate pulse laser with the wavelength of 1064nm, the laser is radiated to the surface of a workpiece after beam expansion, reflection and focusing, the workpiece is locally melted to realize welding, the frequency, the pulse width, the moving speed and the moving direction of the workbench of the pulse laser required during welding can be controlled by a control console, the energy of the laser is controlled by adjusting the current, the frequency and the pulse width of the laser, the workpiece can be subjected to spot welding, butt welding, stitch welding, seal welding and the like, and meanwhile, the depth-width ratio is high, the width of a welding line is small, the deformation area is small, the welding speed is high, the welding line is smooth, and the reflecting mirror is not easy to burst.

Referring to fig. 3-9, the heat dissipating device includes a heat dissipating housing 12 fixedly connected to the outer end of the total reflector 7, heat dissipating fins 13 fixedly connected between the inner walls of the heat dissipating housing 12, heat conductive carbon fibers 14 fixedly connected between the inner walls of the heat dissipating housing 12, the heat conductive carbon fibers 14 located at the upper ends of the heat dissipating fins 13, a graphite layer 15 fixedly connected between the inner walls of the heat dissipating housing 12, the graphite layer 15 located at the upper end of the heat conductive carbon fibers 14, a closed switch 16 rotatably connected to the outer end of the heat dissipating housing 12, two air vents 17 drilled at the left end of the heat dissipating housing 12, a casing 18 fixedly connected to the bottom ends of the air vents 17, a sliding channel 19 drilled at the left end of the casing 18, a sliding rod 20 slidably connected to the sliding channel 19, an expansion balloon 21 fixedly connected to the right end of the sliding rod 20, the expansion balloon 21 located in the casing 18, ammonium chloride powder 22 filled in the casing 21, and a plurality of air inlets 23 drilled at the right end of the casing 18, an anti-explosion device is fixedly connected between the inner walls of the heat dissipation shells 12;

when laser beam expands, reflects and focuses in the laser reflection copper cavity 4, and the temperature of the total reflector 7 continuously rises, heat is guided and adsorbed on the surface through the graphite layer 15, and simultaneously the heat on the surface of the graphite layer 15 is conducted to the heat dissipation fins 13 by the heat conduction carbon fibers 14 for heat dissipation, when the welding power is too high, the heat dissipation efficiency of the heat dissipation fins 13 reaches the best, and when the temperature in the heat dissipation shell 12 is still high, the heat is conducted to the surface of the expansion balloon 21 through the air inlet 23, so that the ammonium chloride powder 22 is heated and decomposed into ammonia gas and hydrogen chloride, the expansion balloon 21 is gradually expanded, the slide bar 20 is driven to push outwards, the slide bar 20 is driven to push the closed switch 16 away gradually, the hot gas in the heat dissipation shell 12 is discharged by a certain amount for heat dissipation, after the temperature is reduced, the expansion balloon 21 retracts, the slide bar 20 is driven to retract into the shell 18, so that external dust is not easy to enter the heat dissipation shell 12, the heat dissipation effect of the heat dissipation fins 13 is not easy to decrease, and when the temperature in the heat dissipation housing 12 is too high, the heat dissipation effect of the heat dissipation fins 13 is optimal, and the heat is discharged to the outside, and the temperature is continuously increased, emergency measures are provided in the heat dissipation housing 12.

Referring to fig. 3, the anti-burst device includes a lantern ring 24 fixedly connected with the inner wall of the heat dissipation housing 12, a glass tube 25 is embedded at the right end of the lantern ring 24, an easily expandable liquid 26 is filled in the glass tube 25, a heat conducting wire 27 is fixedly connected between the glass tube 25 and the total reflector 7, a cooling liquid 28 is filled in the lantern ring 24, a communicating pipe 29 is fixedly connected at the right end of the lantern ring 24, and the communicating pipe 29 is in contact with the total reflector 7;

when the temperature in the heat dissipation housing 12 is too high, the heat dissipation effect of the heat dissipation fins 13 is optimal, and the heat is discharged to the outside, and the temperature is still continuously raised, the high heat is conducted to the surface of the glass tube 25 through the heat conduction line 27, so that the easily expandable liquid 26 in the glass tube 25 is gradually heated and expanded, the glass tube 25 is broken, then the cooling liquid 28 in the lantern ring 24 is released by pressure to be sprayed towards the direction of the total reflector 7, the total reflector 7 is continuously cooled, and the total reflector 7 is not easily burst due to the too high temperature.

Referring to fig. 9, two limiting rods 30 are fixedly connected to the outer end of the sliding rod 20, both the limiting rods 30 contact with the inner wall of the casing 18, and the limiting rods 30 are arranged to limit the sliding rod 20 to a certain extent, so that the sliding rod 20 is not easily separated from the casing 18, and the normal operation of the work is ensured.

Referring to fig. 9, the outer end of the limiting rod 30 is drilled with a spherical groove, a ball is rotatably connected in the spherical groove, and the sliding rod 20 can slide more smoothly in the casing 18 and the heat can be discharged more rapidly by the arrangement of the spherical groove and the ball.

Referring to fig. 3, the easily expandable liquid 26 is a member made of kerosene, and by providing the kerosene, the heat conductivity of the kerosene is high, so that the easily expandable liquid 26 expands by heating to burst the glass tube 25 more quickly, and the total reflection mirror 7 can be cooled rapidly.

Referring to fig. 9, a hauling cable is fixedly connected between the inner cavity of the expansion balloon 21, the hauling cable is in contact with the ammonium chloride powder 22, and the hauling cable is arranged to stir the ammonium chloride powder 22 when the ammonium chloride powder 22 is heated and expanded, so that the ammonium chloride powder 22 is heated and decomposed more quickly, and the expansion speed of the expansion balloon 21 is increased.

Referring to fig. 3, a sealing gasket is fixedly connected to one end of the closing switch 16 close to the heat dissipation housing 12, and by the sealing gasket, the closing switch 16 can be attached to the outer wall of the heat dissipation housing 12 more tightly, so that dust is not easy to enter the heat dissipation housing 12 and damage components in the heat dissipation housing 12.

Referring to fig. 3, the heat conducting line 27 is made of heat conducting silica gel, and the heat conducting silica gel is arranged to conduct heat to the glass tube 25 with better efficiency, and the glass tube is not easily broken due to over-high temperature due to the tough material.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.