CN115635192A - Welding method and device applied to oxyhydrogen material - Google Patents
Welding method and device applied to oxyhydrogen material Download PDFInfo
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- CN115635192A CN115635192A CN202211653195.0A CN202211653195A CN115635192A CN 115635192 A CN115635192 A CN 115635192A CN 202211653195 A CN202211653195 A CN 202211653195A CN 115635192 A CN115635192 A CN 115635192A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a welding method and a welding device applied to oxyhydrogen materials, which comprise a three-axis platform, wherein the top end of the three-axis platform is movably connected with an underframe, the underframe is simultaneously provided with a limiting mechanism and a preheating mechanism, the right upper part of the limiting mechanism is provided with a welding mechanism, the limiting mechanism comprises a bottom plate, the outer wall of the top end of the bottom plate is oppositely provided with two inclined clamping plates, the tops of the two inclined clamping plates are movably connected with an upper die, the top end of the upper die is provided with a welding channel, the two sides of the bottom end of the upper die are respectively provided with an inner inclined surface, the inner inclined surfaces are tangent to the inclined surfaces of the inclined clamping plates, and the two sides of the upper die are provided with a plurality of limiting plates at equal density.
Description
Technical Field
The invention relates to the technical field of welding equipment, in particular to a welding method and a welding device applied to oxyhydrogen materials.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. In addition, the fuel cell uses fuel and oxygen as raw materials, and has no mechanical transmission component, so that the discharged harmful gas is very little, and the service life is long. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy conservation and ecological environment conservation.
Among the fuel cell, need weld the bipolar plate that oxyhydrogen materials such as stainless steel material and titanium alloy material were made, among the prior art, the welding problem is mainly solved through the mode of three-axis platform with the mirror that shakes to the scheme commonly used, before the welding, need fix bipolar plate on the tool, the tool of general fixed bipolar plate need dismantle the back just can install bipolar plate, and in the installation, need confirm and manual adjustment the position of bipolar plate, the operation is comparatively complicated, the installation effectiveness has been reduced.
Disclosure of Invention
The invention discloses a welding method and a welding device applied to oxyhydrogen materials, and aims to solve the technical problems that a bipolar plate needs to be fixed on a jig before welding, the bipolar plate can be installed after the jig for fixing the bipolar plate is generally disassembled, in the installation process, the position of the bipolar plate needs to be confirmed and manually adjusted, the operation is complex, and the installation efficiency is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
be applied to welding set of oxyhydrogen material, including three-axis platform, three-axis platform's top swing joint has the chassis, and is provided with stop gear and preheat the mechanism on the chassis simultaneously, be provided with welding mechanism directly over stop gear, stop gear includes the bottom plate, and the top outer wall of bottom plate is provided with two inclined plane splint, two relatively the top swing joint of inclined plane splint has last mould, and the top of going up the mould is provided with the welding way, the bottom both sides of going up the mould are provided with the inner inclined plane respectively, and the inner inclined plane of inner inclined plane and inclined plane splint is tangent, the both sides equidensity of going up the mould is provided with a plurality of limiting plates, and the bottom fixedly connected with cylinder of one of them limiting plate, the top of bottom plate is located both sides position and is provided with the spout respectively, the bottom of inclined plane splint is provided with a plurality of sliders, and the inner wall connection of slider has the spring.
Through being provided with stop gear, when bipolar plate installs on stop gear, at first will go up the mould and back down through the cylinder, go up the mould and back down the in-process, the tangent position transform of inclined plane on its inner inclined plane and the inclined plane splint, under the effect of spring, drive inclined plane splint and outwards remove along the spout short distance, insert two bipolar plates between inclined plane splint and the last mould this moment, the top supports one side of bottom plate, back through control cylinder playback, go up the mould return, the tangent position playback of inner inclined plane and inclined plane splint simultaneously, it carries out the centre gripping to drive inclined plane splint to carry out the bipolar plate, arrange in order the position of bipolar plate in the clamping process, under this structure, arrange in order double-deck bipolar plate automatically, the accuracy of bipolar plate fixed position has been ensured, the installation degree of difficulty of bipolar plate has also been reduced, guarantee the stability of bipolar plate in the welding process simultaneously, and improve work efficiency.
In a preferred scheme, the top of bottom plate is provided with a plurality of gag lever posts, and a plurality of gag lever posts pass other limiting plates, one side of bottom plate is connected with hollow casing, the inner wall swing joint of hollow casing has the shrouding, and one side of hollow casing is provided with second spout and draw-in groove, one side of shrouding is provided with articulated seat, and the shrouding is connected with the shifting block through articulated seat, the shifting block passes the second spout, and the activity joint is in the draw-in groove, the bottom both sides of shrouding are provided with the hole, downthehole swing joint has branch, the outer wall parcel of branch has the second spring, and the bottom of second spring and branch is connected in hollow casing, welding mechanism includes laser generator, and laser generator is including two couplers, optical resonator and focusing lens, optical resonator sets up between two couplers, focusing lens sets up the lower extreme at optical resonator and coupler, and focusing lens's outer wall is provided with the lens seat, be provided with optic fibre in the optical resonator, and optic fibre connection has the power supply port, the bottom of laser generator is connected with the soldered connection, the core footpath of laser generator is 10-20 mu m, and has the laser generator in the core 254, the collimating lens specification is the long accurate core head for 14 mm.
By arranging the welding mechanism, laser is focused by utilizing a collimation focusing mode in the welding mechanism, and the core diameter and the specification of the focusing lens are set by lengthening the collimation head in the laser generator, the formed light spot can be minimized and thinnest, so that the welding precision of the welding mechanism is improved.
In a preferred scheme, the preheating mechanism comprises a plurality of constant temperature heating plates, a plurality of mounting grooves are formed in the inner wall of the top end of the base plate, the constant temperature heating plates are fixed in the mounting grooves and are simultaneously connected with a controller, a support plate is connected to the bottom end of the base plate, a plurality of radiating fans are arranged in the support plate and act on the bottom ends of the constant temperature heating plates, the heating surfaces of the constant temperature heating plates are arranged on the top surfaces of the constant temperature heating plates, and the radiating fans are simultaneously connected with a time relay;
the welding method applied to the oxyhydrogen material comprises the following specific steps of:
s1: opening the mold: controlling the cylinder to jack the upper die;
s2: placing a first layer of bipolar plates: placing a first layer of bipolar plates on the base plate;
s3: correspondingly placing a second layer of bipolar plates;
s4: die assembly: controlling the cylinder to retract, and clamping two layers of bipolar plates;
s5: preheating: starting a preheating mechanism, and heating the bottom surface of the bipolar plate by using a plurality of constant-temperature heating plates;
s6: starting laser flight welding: performing flight welding on the bipolar plate along the welding channel by using a welding mechanism;
s7: and (3) finishing welding: after welding is finished, the welding mechanism stops;
s8: heat dissipation: the time relay controls the heat radiation fan to radiate heat for a certain time, and the bipolar plate is taken down
The preheating is arranged, the constant temperature heating plates are controlled under the action of the controller to perform constant temperature heating, the constant temperature is controlled to be 60-200 ℃, the heating surface of the constant temperature heating plates is directly contacted with the bipolar plates, the bipolar plates are preheated, materials are heated, deformation is smaller, welding precision is higher, the bipolar plates are prevented from being directly welded, the temperature difference of the materials is increased, deformation is increased, precision is reduced, meanwhile, the timing is started during welding, the starting and stopping time of the cooling fans is controlled through a time relay, the constant temperature heating plates and the bipolar plates can be rapidly cooled after welding, the constant temperature heating plates are cooled at the time of secondary installation of the bipolar plates, the temperature is increased from low temperature, the preheating temperature and the speed of each group of bipolar plates are balanced, rapid temperature rise is avoided, and the service life of the bipolar plates is guaranteed.
From the above, be applied to welding method and device of oxyhydrogen material, including three-axis platform, three-axis platform's top swing joint has the chassis, and is provided with stop gear and preheating mechanism simultaneously on the chassis, be provided with welding mechanism directly over stop gear, stop gear includes the bottom plate, and the top outer wall of bottom plate is provided with two inclined plane splint relatively, two the top swing joint of inclined plane splint has last mould, and the top of going up the mould is provided with the welding way, the bottom both sides of going up the mould are provided with the inner inclined plane respectively, and the inner inclined plane is tangent with the inclined plane of inclined plane splint, the both sides isopycnic of going up the mould is provided with a plurality of limiting plates, and the bottom fixedly connected with cylinder of one of them limiting plate, the top of bottom plate is located both sides position and is provided with the spout respectively, the bottom of inclined plane splint is provided with a plurality of sliders, and the inner wall connection of slider has the spring. The welding method and the welding device applied to the oxyhydrogen material have the technical effects that the double-layer bipolar plate can be automatically arranged, the fixed position accuracy of the bipolar plate is ensured, the installation difficulty of the bipolar plate is reduced, the stability of the bipolar plate in the welding process is ensured, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the welding device applied to oxyhydrogen materials according to the present invention.
Fig. 2 is a schematic structural diagram of a laser welding mechanism applied to a welding device of oxyhydrogen materials.
FIG. 3 is a schematic view of a part of a limiting mechanism of the welding device applied to oxyhydrogen materials according to the present invention.
FIG. 4 is a schematic view of the inclined clamping plate connection structure of the welding device applied to oxyhydrogen materials according to the present invention.
FIG. 5 is a schematic view of a disassembled structure of another part of the limiting mechanism of the welding device applied to oxyhydrogen materials according to the present invention.
FIG. 6 is a schematic diagram showing a disassembled structure of a preheating mechanism of the welding device for oxyhydrogen materials according to the present invention.
FIG. 7 is a general flow chart of the welding method applied to oxyhydrogen materials according to the present invention.
In the figure: 1. a welding mechanism; 2. a limiting mechanism; 3. a preheating mechanism; 4. a chassis; 5. a three-axis platform; 101. a laser generator; 102. a coupler; 103. a power supply port; 104. an optical resonant cavity; 105. a focusing lens; 106. a lens holder; 107. welding a head; 201. a base plate; 202. a limiting rod; 204. an upper die; 205. welding a channel; 206. a limiting plate; 207. a cylinder; 208. a chute; 209. a bevel splint; 210. an inner bevel; 211. a slider; 212. a spring; 213. closing the plate; 214. shifting blocks; 215. a hinged seat; 216. an aperture; 217. a strut; 218. a hollow shell; 219. a card slot; 220. a second chute; 221. a second spring; 301. heating the plate at constant temperature; 302. a controller; 303. mounting grooves; 304. a support plate; 305. a heat-dissipating fan; 306. a time relay.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The welding method and device applied to the oxyhydrogen material are mainly based on the scene of oxyhydrogen material welding.
Referring to fig. 1, 3 and 4, the welding method applied to oxyhydrogen materials comprises a three-axis platform 5, wherein the top end of the three-axis platform 5 is movably connected with an underframe 4, the underframe 4 is simultaneously provided with a limiting mechanism 2 and a preheating mechanism 3, a welding mechanism 1 is arranged right above the limiting mechanism 2, the limiting mechanism 2 comprises a bottom plate 201, the outer wall of the top end of the bottom plate 201 is relatively provided with two inclined plane clamping plates 209, the tops of the two inclined plane clamping plates 209 are movably connected with an upper die 204, the top end of the upper die 204 is provided with a welding channel 205, two sides of the bottom end of the upper die 204 are respectively provided with an inner inclined plane 210, the inner inclined planes 210 are tangent to the inclined planes of the inclined plane clamping plates 209, two sides of the upper die 204 are equidistantly provided with a plurality of limiting plates 206, the bottom end of one limiting plate 206 is fixedly connected with an air cylinder 207, the positions of the top end of the bottom plate 201 at two sides are respectively provided with sliding grooves 208, and the bottom ends of the inclined plane clamping plates 209 are provided with a plurality of sliding blocks 211, and the inner wall of the slide block 211 is connected with a spring 212, when the bipolar plate is installed on the limiting mechanism 2, the upper die 204 is firstly jacked open by the air cylinder 207, the tangent position of the inner inclined surface 210 on the inclined surface clamping plate 209 is changed in the jacking process of the upper die 204, the inclined surface clamping plate 209 is driven to move outwards along the chute 208 in a short distance under the action of the spring 212, two bipolar plates are inserted between the inclined surface clamping plate 209 and the upper die 204 at the moment, the top end of the bipolar plates is propped against one side of the bottom plate 201, then the upper die 204 is reset by controlling the air cylinder 207, meanwhile, the tangent positions of the inner inclined surface 210 and the inclined surface clamping plate 209 are reset, the inclined surface clamping plate 209 is driven to clamp the bipolar plate, the position of the bipolar plate is arranged in the clamping process, under the structure, the double-layer bipolar plate is automatically arranged, the accuracy of the fixed position of the bipolar plate is ensured, and the installation difficulty of the bipolar plate is also reduced, meanwhile, the stability of the bipolar plate in the welding process is guaranteed, and the working efficiency is improved.
Referring to fig. 3 to 5, in a preferred embodiment, a plurality of position-limiting rods 202 are disposed on the top end of the bottom plate 201, and the plurality of position-limiting rods 202 pass through the other position-limiting plates 206, a hollow housing 218 is connected to one side of the bottom plate 201, a sealing plate 213 is movably connected to the inner wall of the hollow housing 218, and a second sliding slot 220 and a locking slot 219 are disposed on one side of the hollow housing 218.
Referring to fig. 3-5, in a preferred embodiment, a hinge seat 215 is disposed on one side of the closing plate 213, and a shifting block 214 is connected to the closing plate 213 through the hinge seat 215, the shifting block 214 passes through the second sliding slot 220 and is movably clamped in the clamping slot 219, and holes 216 are disposed on two sides of a bottom end of the closing plate 213.
Referring to fig. 5, in a preferred embodiment, a rod 217 is movably connected in the hole 216, a second spring 221 is wrapped around the outer wall of the rod 217, and the second spring 221 and the bottom end of the rod 217 are connected in a hollow shell 218.
Referring to fig. 2, in a preferred embodiment, the welding mechanism 1 includes a laser generator 101, and the laser generator 101 includes two couplers 102, an optical cavity 104 and a focusing lens 105, the optical cavity 104 is disposed between the two couplers 102, the focusing lens 105 is disposed at the lower ends of the optical cavity 104 and the couplers 102, and a lens holder 106 is disposed on the outer wall of the focusing lens 105. In other embodiments, the welding mechanism 1 can select a galvanometer welding head as a substitute, and utilizes the galvanometer to realize rapid scanning and deflection of laser, so that accessibility of the laser is increased, compared with the traditional mode, the galvanometer laser welding machine is replaced by a scanning lens moving at a high speed, and the instantaneous multipoint welding controlled by a program is realized by matching with professional software with a strong graphic processing function, so that the production efficiency and the flexibility are effectively improved, and the method is embodied in the aspects of high welding speed, small welding spots (the diameter of a light spot at a focus is only 0.3 mm), less welding heat, small thermal deformation and the like.
Referring to fig. 2, in a preferred embodiment, an optical fiber is disposed in the optical cavity 104, the optical fiber is connected to the power supply port 103, the bottom end of the laser generator 101 is connected to the bonding head 107, the core diameter of the laser generator 101 is 10-20 μm, the laser generator 101 has a longer collimating head therein, the focusing lens 105 has a specification of 160-254mm, and the core diameter of the optical fiber is 14 μm, wherein the laser is focused by means of collimating focusing in the welding mechanism 1, and the core diameter and the specification of the focusing lens 105 are set by lengthening the collimating head in the laser generator 101, so that the formed light spot can be minimized and minimized, thereby improving the welding precision of the welding mechanism 1.
Referring to fig. 6, in a preferred embodiment, the preheating mechanism 3 includes a plurality of constant temperature heating plates 301, a plurality of mounting grooves 303 are provided on the top inner wall of the bottom plate 201, the plurality of constant temperature heating plates 301 are fixed in the plurality of mounting grooves 303, and a controller 302 is connected to the plurality of constant temperature heating plates 301.
Referring to fig. 6, in a preferred embodiment, a support plate 304 is connected to the bottom end of the base plate 201, a plurality of heat dissipation fans 305 are disposed in the support plate 304, the plurality of heat dissipation fans 305 act on the bottom ends of the plurality of constant temperature heating plates 301, the heating surface of the constant temperature heating plates 301 is disposed on the top surface of the constant temperature heating plates, and a time relay 306 is connected to the plurality of heat dissipation fans 305.
Referring to fig. 1-7, the welding method applied to oxyhydrogen materials comprises the following specific steps:
s1: opening the mold: controlling the cylinder 207 to jack the upper die 204;
s2: placing a first layer of bipolar plates: placing a first layer of bipolar plates on the base plate 201;
s3: correspondingly placing a second layer of bipolar plates;
s4: die assembly: controlling the retraction of the cylinder 207 and clamping two layers of bipolar plates;
s5: preheating: the preheating mechanism 3 is started to heat the bottom surface of the bipolar plate by using a plurality of constant temperature heating plates 301.
Referring to fig. 1 to 7, in a preferred embodiment, S5, after preheating, further includes the following specific steps:
s6: starting laser flight welding: performing flight welding on the bipolar plate along the welding channel 205 by using the welding mechanism 1;
s7: and (3) finishing welding: after welding, the welding mechanism 1 stops;
s8: heat dissipation: the time relay 306 controls the heat radiation fan 305 to radiate heat for a certain time, the bipolar plate is taken down, the plurality of constant temperature heating plates 301 are arranged on the bottom plate 201, the constant temperature heating plates 301 are controlled to heat at constant temperature under the action of the controller 302, wherein the constant temperature is controlled to be 60-200 ℃, the bipolar plate is directly contacted with the heating surface of the constant temperature heating plates 301 through the bipolar plate, the bipolar plate is preheated, after the material is heated, the deformation is smaller, the welding precision is higher, the bipolar plate is prevented from being directly welded, the temperature difference of the material is increased, the deformation is increased, the precision is reduced, meanwhile, the plurality of heat radiation fans 305 are arranged, timing is started during welding, the time relay 306 controls the starting and stopping time of the heat radiation fan 305, the heat radiation can be rapidly radiated for the constant temperature heating plates 301 and the bipolar plate after welding, wherein the heat radiation for the constant temperature bipolar plate 301 can be secondarily installed, the temperature is raised from low temperature, the preheating temperature and the speed of each group of the bipolar plate are balanced, the rapid temperature rise is avoided, and the service life of each group is ensured.
The working principle is as follows: when the bipolar plate is installed on the limiting mechanism 2, the upper die 204 is firstly jacked open by the cylinder 207, the upper die 204 is limited under the action of the limiting rods 202 and the limiting plates 206, the displacement in the opening process is avoided, the tangent position of the inner inclined plane 210 on the inclined plane clamping plate 209 is changed in the jacking process of the upper die 204, the inclined plane clamping plate 209 is driven to move outwards along the chute 208 in a short distance under the action of the spring 212, at the moment, two bipolar plates are inserted between the inclined plane clamping plate 209 and the upper die 204, the top end of each bipolar plate is propped against one side of the bottom plate 201, the shifting block 214 clamped in the clamping groove 219 is shifted to enter the second chute 220, the opposite end where the sealing plate 213 is propped against the bipolar plate is limited under the action of the second spring 221, then the upper die 204 returns by controlling the cylinder 207, and the tangent position of the inner inclined plane 210 and the inclined plane clamping plate 209 returns at the same time, the inclined plane clamping plate 209 is driven to clamp the bipolar plate, the position of the bipolar plate is arranged in the clamping process, under the structure, the double-layer bipolar plate is automatically arranged, the accuracy of the fixed position of the bipolar plate is ensured, the installation difficulty of the bipolar plate is also reduced, meanwhile, the stability of the bipolar plate in the welding process is ensured, the working efficiency is improved, the constant temperature heating plates 301 are controlled to be heated at constant temperature under the action of the controller 302 by arranging the constant temperature heating plates 301 on the bottom plate 201 before welding, wherein the constant temperature is controlled to be 60-200 ℃, the bipolar plate is directly contacted with the heating surface of the constant temperature heating plates 301 through the bipolar plate, the bipolar plate is preheated, after the material is heated, the deformation is smaller, the welding accuracy is higher, the direct welding is avoided, the temperature difference of the material is increased, the deformation is increased, the accuracy is poor, and during the welding, because the laser is focused by utilizing the collimation focusing mode in the bipolar plate 1, and through lengthening the collimation head in the laser generator 101, set up its core diameter and specification of the focusing lens 105, can make the facula formed accomplish minimum thinnest, thus improve the welding accuracy of the welding mechanism 1, after welding, through being provided with a plurality of radiator fans 305, begin timing when welding, start and stop time through time relay 306 control radiator fan 305, can dispel the heat for constant temperature heating plate 301 and bipolar plate fast after welding, wherein, dispel the heat to the constant temperature heating plate 301 and can be when the secondary installation bipolar plate, begin to heat up from the low temperature, balance the preheating temperature and the speed of every group bipolar plate, avoid rapid heating up, guarantee the life of bipolar plate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a be applied to welding set of oxyhydrogen material, includes three-axis platform (5), its characterized in that, the top swing joint of three-axis platform (5) has chassis (4), and is provided with stop gear (2) and preheats mechanism (3) on chassis (4) simultaneously, be provided with welding mechanism (1) directly over stop gear (2), stop gear (2) are including bottom plate (201), and the top outer wall of bottom plate (201) is provided with two inclined plane splint (209) relatively, two the top swing joint of inclined plane splint (209) has last mould (204), and the top of going up mould (204) is provided with welding track (205), the bottom both sides of going up mould (204) are provided with interior inclined plane (210) respectively, and interior inclined plane (210) are tangent with the inclined plane of inclined plane splint (209), the both sides isopycnic of going up mould (204) is provided with a plurality of limiting plates (206), and the bottom fixedly connected with cylinder (207) of one of them limiting plate (206), the top of bottom plate (201) is located both sides position and is provided with spout (208) respectively, the bottom of splint (209), the inclined plane (209) is provided with a plurality of sliders (211), and the inner wall (212) of slider (212).
2. The welding device applied to oxyhydrogen materials according to claim 1, wherein a plurality of limiting rods (202) are arranged on the top end of the bottom plate (201), and the limiting rods (202) pass through other limiting plates (206), a hollow shell (218) is connected to one side of the bottom plate (201), a sealing plate (213) is movably connected to the inner wall of the hollow shell (218), and a second sliding groove (220) and a clamping groove (219) are arranged on one side of the hollow shell (218).
3. The welding device applied to oxyhydrogen materials according to claim 2, wherein one side of the closing plate (213) is provided with a hinged seat (215), the closing plate (213) is connected with a shifting block (214) through the hinged seat (215), the shifting block (214) passes through the second chute (220) and is movably clamped in the clamping groove (219), and holes (216) are arranged on two sides of the bottom end of the closing plate (213).
4. The welding device applied to oxyhydrogen materials according to claim 3, wherein a support rod (217) is movably connected in the hole (216), the outer wall of the support rod (217) is wrapped by a second spring (221), and the second spring (221) and the bottom end of the support rod (217) are connected in the hollow shell (218).
5. The welding device applied to oxyhydrogen materials according to claim 1, wherein the welding mechanism (1) comprises a laser generator (101), the laser generator (101) comprises two couplers (102), an optical resonant cavity (104) and a focusing lens (105), the optical resonant cavity (104) is arranged between the two couplers (102), the focusing lens (105) is arranged at the lower ends of the optical resonant cavity (104) and the couplers (102), and the outer wall of the focusing lens (105) is provided with a lens seat (106).
6. The welding device applied to oxyhydrogen materials according to claim 5, wherein an optical fiber is arranged in the optical resonant cavity (104) and is connected with a power supply port (103), the bottom end of the laser generator (101) is connected with a welding head (107), the core diameter of the laser generator (101) is 10-20 μm, a longer collimation head is arranged in the laser generator (101), the size of the focusing lens (105) is 160-254mm, and the core diameter of the optical fiber is 14 μm.
7. The welding device applied to oxyhydrogen materials according to claim 6, wherein the preheating mechanism (3) comprises a plurality of constant temperature heating plates (301), the top inner wall of the bottom plate (201) is provided with a plurality of mounting grooves (303), the plurality of constant temperature heating plates (301) are fixed in the plurality of mounting grooves (303), and the plurality of constant temperature heating plates (301) are simultaneously connected with a controller (302).
8. The welding device applied to oxyhydrogen materials according to claim 7, characterized in that a support plate (304) is connected to the bottom end of the bottom plate (201), a plurality of heat dissipation fans (305) are arranged in the support plate (304), the plurality of heat dissipation fans (305) act on the bottom ends of the plurality of constant temperature heating plates (301), the heating surface of the constant temperature heating plates (301) is arranged on the top surface of the constant temperature heating plates, and a time relay (306) is simultaneously connected to the plurality of heat dissipation fans (305).
9. The welding method applied to oxyhydrogen materials is based on the welding device applied to oxyhydrogen materials in claim 7, and is characterized by comprising the following specific steps:
s1: opening the die: controlling an air cylinder (207) to push open the upper die (204);
s2: placing a first layer of bipolar plates: placing a first layer of bipolar plates on a base plate (201);
s3: correspondingly placing a second layer of bipolar plates;
s4: die assembly: controlling the retraction of the cylinder (207) to clamp two layers of bipolar plates;
s5: preheating: the preheating mechanism (3) is started, and the bottom surface of the bipolar plate is heated by a plurality of constant temperature heating plates (301).
10. The welding method applied to oxyhydrogen materials according to claim 9, wherein the preheating of the S5 further comprises the following steps:
s6: starting laser flight welding: performing flight welding on the bipolar plate along the welding channel (205) by using a welding mechanism (1);
s7: and (4) finishing welding: after welding is finished, the welding mechanism (1) stops;
s8: heat dissipation: the time relay (306) controls the heat radiation fan (305) to radiate heat for a certain time, and the bipolar plate is taken down.
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| CN202211653195.0A CN115635192B (en) | 2022-12-22 | 2022-12-22 | Welding method and device applied to oxyhydrogen material |
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| CN216264301U (en) * | 2021-11-05 | 2022-04-12 | 大连辰宇精密机械制造有限公司 | Positioning bracket for welding metal structural part |
| CN216967042U (en) * | 2022-02-08 | 2022-07-15 | 珠海市春宇科技有限公司 | Quick clamping device on machine |
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| CN113020794A (en) * | 2021-03-31 | 2021-06-25 | 龙俊耀 | Ultrahigh-speed precise welding process and welding clamp for hydrogen energy automobile bipolar plate |
| CN216264301U (en) * | 2021-11-05 | 2022-04-12 | 大连辰宇精密机械制造有限公司 | Positioning bracket for welding metal structural part |
| CN216967042U (en) * | 2022-02-08 | 2022-07-15 | 珠海市春宇科技有限公司 | Quick clamping device on machine |
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| CN115635192B (en) | 2023-04-28 |
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