CN105478959B - Underwater dry-type electric arc welder and welding method with nozzle - Google Patents
Underwater dry-type electric arc welder and welding method with nozzle Download PDFInfo
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- CN105478959B CN105478959B CN201610025906.8A CN201610025906A CN105478959B CN 105478959 B CN105478959 B CN 105478959B CN 201610025906 A CN201610025906 A CN 201610025906A CN 105478959 B CN105478959 B CN 105478959B
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- 238000003466 welding Methods 0.000 title claims abstract description 178
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010891 electric arc Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 68
- 230000001141 propulsive effect Effects 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- 230000009471 action Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007778 shielded metal arc welding Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0061—Underwater arc welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention discloses a kind of underwater dry-type electric arc welder and welding method with nozzle, the welder includes welding gun, air feed equipment and control unit：The welding gun includes gun barrel and electrode holder, gun barrel is provided with air inlet, the automatic clamping mechanism of assembling welding rod is provided with gun barrel, on axial direction, the side tube chamber of gun barrel is connected by the outlet side of the air inlet and air feed equipment, be provided with gas nozzle at the port of the side pipe chamber, and provided with can external-open upset end cap, end cap automatically controls closing by elastic mechanism；Propulsive mechanism is provided with gun barrel opposite side tube chamber, automatic clamping mechanism is arranged on propulsive mechanism, is driven by propulsive mechanism and is moved on gun barrel axial direction.The present invention is novel in design, easy to operate and is easily achieved, and by the way of protective gas sprays out of torch neck, quickly forms a local space dry type environment, and can ensure the drying of welding rod during Underwater Welding.
Description
Technical field
The invention belongs to field of machining, is related to underwater welding technology, specially a kind of underwater dry-type electricity with nozzle
Arc welding device and welding method.
Background technology
At present, Underwater Welding is just turning into a more and more popular and practical welding technique, the ship that is particularly suitable for use in, ocean
The occasion repaired to underwater portion is much needed in engineering, but is influenceed by working environment, Underwater Welding also exists many real
Apply the difficult point of technology, including easily water inlet causes the increase of weld seam hydrogen content for weld seam and welding material, the peace that the electric conductivity of water is brought
Full hidden danger, and worker does not see the position of electric arc and weld seam during welding in water, requires higher etc. to the operative skill of worker, its
In, the waterproof problem of weld seam and welding material is the most prominent when being welded in water.Most of dry type welding technique is in traditional water
To form the confined space of a dry type using drainage arrangement, the method then welded again is carried out.Such as there are forefathers in head
Add a welding enclosure on helmet, dry type space is formed using air draining in welding enclosure, although this method can be to greatest extent
Accomplish in water effect of the welding with welding on the bank as, but its cost is huge, device complexity, and takes time and effort, often not
The occasion of especially emergency maintenance is repaired to welding structure suitable for water.And in existing welding method, using water
Middle SMAW compares welding wire and is omitted from the mechanisms such as the wire feed flexible pipe grown very much and very big wire reel, therefore welding rod arc in water
Weldering is a kind of underwater welding method of current most prospect again.Asked so developing a set of waterproof that can either solve underwater electrode
Topic, and can reduces the requirement to operation technical ability when being welded in water, while and can ensures that the weldering device of welder's safety just shows
Obtain particularly urgent and important.
The content of the invention
The technical purpose of the present invention is to provide a kind of underwater dry-type electric arc with nozzle for improving prior art deficiency
Weldering device and welding method are welded, using gas draining, manufactures the dry type environment for being adapted to welding.
To realize above-mentioned technical purpose, technical scheme disclosed by the invention is：
Underwater dry-type electric arc welder with nozzle, it is characterised in that single including welding gun, air feed equipment and control
Member：
The welding gun includes gun barrel and electrode holder, and gun barrel is provided with air inlet, and the Automatic-clamping of assembling welding rod is provided with gun barrel
Mechanism, on axial direction, the side tube chamber of gun barrel is connected by the outlet side of the air inlet and air feed equipment, the side pipe chamber
Be provided with gas nozzle at port, and the end cap provided with closed port, the end cap can external-open upset, it is and automatic by elastic mechanism
Control is closed；Propulsive mechanism is provided with gun barrel opposite side tube chamber, the automatic clamping mechanism is arranged on the propulsive mechanism, by
Propulsive mechanism drive moved on gun barrel axial direction, the air feed equipment, automatic clamping mechanism, propulsive mechanism respectively with it is described
Control unit connects.
On the basis of such scheme, further improve or preferable technical scheme also includes：
The welder is additionally provided with welding rod warmer, and the welding rod warmer is provided with the cylinder that can be enclosed on welding gun gun barrel
Chamber, is provided with the barrel chamber end cap of closed port at barrel chamber port, the barrel chamber end cap can in open upset, it is and automatic by elastic mechanism
Control is closed, and welding rod location and installation is in the location mid-shaft of barrel chamber, warmer barrel chamber one electrode of interior storage.
The welding rod warmer is provided with sealing ring, the internal diameter of the sealing ring and the weldering of pluggable barrel chamber on the outside of end cap
The external diameter of rifle gun barrel section agrees with, and gun barrel is just inserted in sealing ring, prevents from putting in warmer and intakes.
In view of in underwater environment, judge that the usage degree of welding rod is relatively difficult by eyesight merely, propulsive mechanism or oneself
Dynamic clamp system is easily burnt out, and mounting temperature sensor, the temperature can be passed on the propulsive mechanism or automatic clamping mechanism
Sensor is connected with described control unit.Electric arc is from the original that the nearlyer temperature of temperature sensor can steeply rise when being soldered using welding rod
Reason is by electric arc automatic distinguishing, operation difficulty when further being welded in reduction water.
The middle part of welding gun gun barrel is provided with the guide rail of the constraint propulsive mechanism direction of motion, and guide rail passes through cable and source of welding current electricity
Connection, as the part of electrode, welding rod is electrically connected by automatic clamping mechanism with guide rail.
The propulsive mechanism preferably uses double-acting cylinder or hydraulic cylinder, and the chuck of automatic clamping mechanism, which is arranged on, stretches out cylinder
On the piston rod of body；The current sensor of detection welding current is provided with welding circuit, the cylinder or hydraulic cylinder are used for will be living
The air inlet or inlet passing ratio solenoid valve control for the cavity that stopper rod promotes to gun barrel port side open and close, and the electric current passes
Sensor, proportion magnetic valve are connected with control unit respectively, and ratio is controlled according to the output signal of current sensor by control unit
The aperture of magnetic valve.
A kind of underwater dry-type electric arc welding method with the underwater dry-type electric arc welder with nozzle as described above,
Characterized in that, its welding process comprises the following steps：
Using the current signal of current sensor detection welding circuit, and detection signal is exported to control unit；
After welding process starts, continue to introduce air-flow to the gas nozzle of welding gun, gun barrel end cap top is opened, by gas nozzle
Water body in surrounding weld zone arranges；
Start welding gun propulsive mechanism, welding rod is pushed to gun barrel port, after welding rod encounters workpiece, produced in welding circuit
Electric current, current sensor export corresponding detection signals to control unit, and control unit controls propulsive mechanism by one section of welding rod pumpback
Distance, ignite electric arc, then controls propulsive mechanism to push welding rod forward and welded；
The position relationship of automatic clamping device or propulsive mechanism and weld zone electric arc is judged using temperature sensor, and is exported
Detection signal is automatic by control unit when electrode feeding to preset stoping point or temperature exceed preset temperature to control unit
Control blow-out.
Further technical scheme also includes：
Determine the proportionate relationship between welding current and electrode feeding speed before welding, it is single by control in welding process
Member adjusts the pushing speed of propulsive mechanism according to the detection signal of the current sensor, makes electrode feeding speed and burn-off rate
It is adapted.
The propulsive mechanism preferably uses double-acting cylinder or hydraulic cylinder, and the chuck of automatic clamping mechanism, which is arranged on, stretches out cylinder
On the piston rod of body, the cylinder or hydraulic cylinder are used for the air inlet of cavity for promoting piston rod to gun barrel port side or entered
Liquid mouth passing ratio solenoid valve control opens and closes, and control unit controls opening for proportion magnetic valve according to the output signal of current sensor
Degree, so as to adjust the fltting speed of cylinder or hydraulic cylinder.
Further, the process of the welding method assembling welding rod is:
Air-flow is introduced to welding gun gas nozzle, gun barrel end cap is closed using air-flow top Kaifeng, the water body around nozzle is arranged,
Gun barrel nozzle is aligned with welding rod warmer port, opened warmer end cap top using gun barrel, gun barrel is inserted into warmer barrel chamber
Interior, the automatic clamping mechanism in gun barrel clamps welding rod after encountering welding rod, and gun barrel is withdrawn from from warmer, welding rod is assemblied in rifle
Guan Zhong.
Beneficial effect：
Welder of the present invention and welding method are novel in design, easy to operate, safe to use and be easily achieved, using protection
The mode that gas sprays out of welding gun gas nozzle, a local space dry type environment is quickly formed, and can ensured underwater
The drying of welding rod during welding, it is low and easily operated present invention is implemented as this, it is adapted to promote the use of, high-quality, efficient, province can be achieved
When, the underwater Arc Welding Process in labour-saving.
Brief description of the drawings
Fig. 1 is the structural representation of welding gun；
Fig. 2 is the structural representation of warmer；
Fig. 3 is the fundamental diagram of control unit；
Fig. 4 is the automatic blow-out theory diagram of welding rod；
Fig. 5 is the schematic flow sheet of welding process；
In figure：1- electrode holders, 2- cables, 3- welding buttons, 4- pause buttons, 5- send bar button, and 6- supplies gas button, 7- air inlets
Mouthful, 8- air inlets, 9- piston rods, 10- gas nozzles, 11- piston rod guides, 12- waterproof insulation overcoats, 13- end caps, 14- bullets
Property mechanism, 15- electromagnetic chucks, 16- temperature sensors, 17- welding rods, 18- air inlets.
In Fig. 2：The waterproof thermal-insulated overcoats of 19-, 20- elastic mechanisms, 21- sealing rings, 22- end caps, 23- welding rods, 24- are fixed
Support.
Embodiment
In order to illustrate technical scheme and technical purpose, below in conjunction with the accompanying drawings and specific embodiment is done to the present invention
It is further to introduce.
A kind of underwater dry-type electric arc welder with nozzle, including welding gun, air feed equipment, welding rod warmer and circuit
Control system etc..
The magnetic valve that the circuit control system is connected by the control unit based on PLC and respectively with control unit（Including
Proportion magnetic valve）, temperature sensor, current sensor, the part such as displacement transducer form.
As shown in figure 1, the welding gun includes gun barrel and there is provided weld button 3, pause button 4, send bar button 5, receipt
The electrode holder 1 of the control buttons such as button, button 6 of supplying gas, clamp bar button, welding gun are externally provided with waterproof insulation overcoat 12.
The gun barrel is provided with air inlet 18, is provided with the automatic clamping mechanism of assembling welding rod 17 in gun barrel, in the present embodiment
Using electromagnetic clamping mechanism.On gun barrel axial direction, gun barrel side tube chamber passes through the air inlet 18 and the outlet of air feed equipment
End connects, and gas nozzle 10 is provided with the port of the side pipe chamber, and the end cap 13 provided with closed port, the end cap 13 pass through hinge
Chain is arranged on gun barrel, can external-open upset, and pass through elastic mechanism 14（Such as torsion spring）Automatically control closing；Gun barrel opposite side tube chamber
In be provided with double-acting miniature cylinder form propulsive mechanism, the electromagnetic clamping mechanism be arranged on double-acting miniature cylinder stretch out cylinder
The end of the piston rod 9 of body, under control unit control, driven by cylinder and moved on gun barrel axial direction, completed to welding rod
17 push and pumpback action.
The temperature sensor is arranged on the chuck of electromagnetic clamping mechanism, and the middle part of gun barrel is provided with constraint double-acting miniature
The guide rail 11 of the direction of motion of cylinder piston rod 9, the guide rail 11 are electrically connected by cable 2 with the source of welding current, the group as electrode
Into part, welding rod 17 is electrically connected by electromagnetic clamping mechanism with guide rail 11, forms welding circuit.
The current sensor of detection welding current is provided with the welding circuit, double-acting miniature cylinder is used for piston rod
The passing ratio magnetic valve 1A4 of air inlet 7 of 9 cavitys promoted to gun barrel port side, which is controlled, to be opened and closed, the air inlet of opposite side cavity
Mouth 8 is controlled by magnetic valve 1A2.
As shown in Fig. 2 the welding rod warmer is provided with waterproof thermal-insulated overcoat 19 and deposits the barrel chamber of welding rod 23, barrel chamber port
Barrel chamber end cap 22 of the place provided with closed port, the barrel chamber end cap 22 are arranged on welding rod warmer by hinge, interior can be opened and be turned over
Turn, and pass through elastic mechanism 20（Such as torsion spring）Closing is automatically controlled, welding rod 23 is by the location and installation of fixed support 24 in barrel chamber
Location mid-shaft, it is convenient to be aligned with the electromagnetic clamping mechanism in welding gun, and only deposit an electrode in a warmer barrel chamber.Welding rod
Warmer is provided with sealing ring 21 on the outside of end cap, and the internal diameter of the sealing ring 21 is outer with the welding gun gun barrel section of pluggable barrel chamber
Agree with footpath.
During welding, the welding button 3 on electrode holder 1 is pressed, proportion magnetic valve 1A4 coil obtains electric, spool position movement, pressure
Contracting air enters from double-acting miniature cylinder air inlet 7, and cylinder piston rod 9 moves downward along the guide direction of guide rail 11, welding rod
17 are down sent into.After welding rod 17 and workpiece contact, control unit output signal closes proportion magnetic valve 1A4 immediately, opens control
After the magnetic valve 1A2 for the air inlet 8 that piston rod moves upwards, the pumpback campaign 0.5s of welding rod 17, ignite electric arc.By controlling after 0.5s
Element output signal processed, air inlet 8 is closed, and open proportion magnetic valve 1A4, welding rod 17 is continued down to be sent into and welded.
The chuck upper end of electromagnetism clamping mechanism is equipped with temperature sensor, when welding rod 17 is soon soldered, temperature sensor due to now from
Arc position is nearer, and temperature steeply rises.Control unit output signal, solid-state relay SSR inputs lose signal, output end
Disconnect, welding arc extinguishes, with burnout-proof piston rod 9 and chuck.During welding, the instant piston 9 of the feed rate of welding rod 17 down
Move down speed, the aperture for moving down speed passing ratio magnetic valve 1A4 of piston rod 9 is adjusted, and welding rod 17 is past before striking
Proportion magnetic valve 1A4 apertures remain maximum when moving down；After striking, it will be welded by the current sensor inside the source of welding current
The digital module for meeting A/D module EM235, PLC that electric current sends PLC control unit to exports an amplified circuit of pwm signal
One 4 ~ 20mA proportional to welding current of proportion magnetic valve 1A4 coils analog signal is given afterwards.Proportion magnetic valve 1A4's opens
Degree and the proportional relation of the analog quantity.Welding current determined by engineer testing in advance and piston rod moves down ratio between speed
Example relation, to ensure that electrode feeding speed and burn-off rate are equal.
The present embodiment is moved up and down to realize the automatic feed of welding rod 1 and return by double-acting miniature cylinder piston rod 9
Function is taken out, so does mainly to avoid welding in water and send bar by hand, reduce operation difficulty.The size design of gas nozzle 10 should be big
Small moderate, if being made too big welding gun operation inconvenience, too small then protection domain is too small, and weld seam easily soaks after electric arc.Welding rod
Clamping realizes that the waterproof in welding process is mainly by the protection gas that high speed is sprayed from gas nozzle 10 by electromagnetic clamping mechanism
Body ensures.
When being welded using underwater dry-type electric arc welder of the present invention with nozzle, it can implement as follows：
Step 1：Before lower water, electric welding machine and PLC control cabinet are first opened on the coast and sets welding current.
Step 2：After lower water, first send protection gas and installation the first electrode.
The button 6 of supplying gas on electrode holder 1 is pressed, the magnetic valve 1A1 coils of PLC control unit output signal control protection gas obtain
Electricity, magnetic valve 1A1 are opened.Air feed equipment output gas is sent into from nozzle air inlet 18 on the bank, and the end cap 13 below nozzle is opened on top,
And the water body around weld zone is arranged.Now, piston rod 9 and electromagnetic chuck are in the initial position at top dead centre, will weld
Rifle gun barrel inserts warmer barrel chamber, and when the bottom of welding rod warmer barrel chamber contacts welding gun port, welding rod upper end is just and electromagnetism
Chuck contacts.Now click the clamp bar button on electrode holder, the coil of electromagnetic chuck obtains electric, and welding rod 23 is clamped.Treat welding rod 23
After end is clamped, gun barrel is withdrawn from from waterproof thermal-insulated device barrel chamber.The upper end of end cap 22 of welding rod warmer is equipped with rubber seal
Circle, under the effect of elastic mechanism 20, welding rod warmer separates rear end cap 11 with welding gun and can closed quickly, will not soak.
Step 3：By the position adjustment of welding gun it is good after, press welding button 3.PLC control unit output signal controls ratio
Magnetic valve 1A4 coil obtains electric, and the follows track 11 of piston rod 9 of double-acting miniature cylinder moves down, and welding rod 17 is quick to be sent into downwards.
After welding rod 17 contacts with workpiece, PLC control unit detects welding current, output control signal, makes proportion magnetic valve 1A4's
Coil losing electricity, magnetic valve 1A2 obtain electric, and piston rod moves 0.5s upwards, and welding rod pumpback, ignite electric arc.Proportion magnetic valve after 0.5s
1A4 coil again it is electric, magnetic valve 1A2 dead electricity, welding rod continues feeding and welded.The speed that moves down of piston rod 9 passes through water
Lower welding procedure test and welding current match.
Step 4：When welding rod is nearly soldered, temperature is experienced by the temperature sensor on electromagnetic chuck top, PLC control unit is defeated
Go out signal by welding arc automatic distinguishing, with burnout-proof piston rod 9 and electromagnetic chuck.Operating personnel should stand after finding arc extinction
Unclamp welding button 3.Now, the piston rod 9 of double-acting miniature cylinder in succession electromagnetic chuck should be in lower dead center.Now press weldering
Upper receipt button, magnetic valve 1A2 coil obtains electric, and piston rod 9 is moved up, and displacement transducer is triggered when above moving on to top dead centre,
Magnetic valve 1A2 coil losing electricity, piston rod 9 are parked in top dead center position.The clamp bar button on electrode holder is now clicked again, by clamp bar
Push-button reset.Electromagnetic chuck coil KA3 dead electricity, the electrode stub not burnt down is from gun barrel port Automatic-falling.
Step 4：The action of welding rod is installed in repeat step 2.The action that step 3 is repeated after welding rod clamping is welded
Connect.If needing pause to handle workpiece in welding process, the pause button 4 on electrode holder is clicked, now PLC is controlled
Element output signal processed, proportion magnetic valve 1A4 coils and magnetic valve 1A2 coils all dead electricity, welding rod is controlled no longer down to send, electric arc
Extinguish.Piston rod 9 is parked in as you were.To weld again, then pause button 4 is pressed, button resets, proportion magnetic valve 1A4
Coil again it is electric, welding rod is down sent, and the action of welding rod pumpback striking is as described in step 3.
Step 5：At the end of welding process, the clamp bar button on electrode holder is first clicked, electrode stub is come off.Then one is pressed
Under supply gas button 6, the button 6 that will supply gas resets.Now protect the valve core of the electromagnetic valve of gas to reset, protection air to close is fallen.At nozzle
End cap 13 closes under the effect of elastic mechanism 14, to prevent being soaked in gun barrel port (nozzle).Finally click the receipt on electrode holder 1
Button, piston rod 9 return to top dead center position and prepared for welding next time.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, the present invention
Claimed scope is by appended claims, specification and its equivalent thereof.
Claims (5)
1. the underwater dry-type electric arc welder with nozzle, it is characterised in that including welding gun, air feed equipment, control unit, weldering
Bar warmer：
The welding gun includes gun barrel and electrode holder, and gun barrel is provided with air inlet, and the automatic clamping mechanism of assembling welding rod is provided with gun barrel,
On axial direction, the side tube chamber of gun barrel is connected by the outlet side of the air inlet and air feed equipment, the port of the side pipe chamber
Place is provided with gas nozzle, and the end cap provided with closed port, the end cap can external-open overturn, and automatically controlled by elastic mechanism
Close；Propulsive mechanism is provided with gun barrel opposite side tube chamber, the automatic clamping mechanism is arranged on the propulsive mechanism, by promoting
Mechanism drive moved on gun barrel axial direction, the air feed equipment, automatic clamping mechanism, propulsive mechanism respectively with the control
Unit connects；
The welding rod warmer is provided with the barrel chamber that can be enclosed on welding gun gun barrel, and the barrel chamber end of closed port is provided with barrel chamber port
Lid, the barrel chamber end cap interior can open upset, and automatically control closing, axis of the welding rod location and installation in barrel chamber by elastic mechanism
Position, warmer barrel chamber one electrode of interior storage, the welding rod warmer is provided with sealing ring on the outside of end cap, described close
The internal diameter of seal and the external diameter of the welding gun gun barrel section of pluggable barrel chamber agree with；
The propulsive mechanism is double-acting cylinder or hydraulic cylinder, and the chuck of automatic clamping mechanism is arranged on the piston rod for stretching out cylinder body
On；
The current sensor of detection welding current is provided with welding circuit, the cylinder or hydraulic cylinder are used for piston rod to gun barrel
The air inlet or inlet passing ratio solenoid valve control for the cavity that port side promotes open and close, the current sensor, ratio
Magnetic valve is connected with control unit respectively, and opening for proportion magnetic valve is controlled according to the output signal of current sensor by control unit
Degree.
2. the underwater dry-type electric arc welder according to claim 1 with nozzle, it is characterised in that the pusher
Temperature sensor is installed, the temperature sensor is connected with described control unit on structure or automatic clamping mechanism.
3. the underwater dry-type electric arc welder according to claim 1 with nozzle, it is characterised in that welding gun gun barrel
Middle part is provided with the guide rail of the constraint propulsive mechanism direction of motion, and guide rail is electrically connected by cable with the source of welding current, the group as electrode
Into part, welding rod is electrically connected by automatic clamping mechanism with guide rail.
A kind of 4. underwater dry-type electric arc welding of underwater dry-type electric arc welder with nozzle with described in claim 1
Method, it is characterised in that its welding process comprises the following steps：
Using the current signal of current sensor detection welding circuit, and detection signal is exported to control unit；
After welding process starts, continue to introduce air-flow to the gas nozzle of welding gun, gun barrel end cap top is opened, around gas nozzle
Water body in weld zone arranges；
Start welding gun propulsive mechanism, welding rod is pushed to gun barrel port, after welding rod encounters workpiece, electricity is produced in welding circuit
Stream, current sensor exports corresponding detection signals to control unit, control unit control propulsive mechanism by one section of welding rod pumpback away from
From ignite electric arc, then controls propulsive mechanism to push welding rod forward and welded；
The position relationship of automatic clamping device or propulsive mechanism and weld zone electric arc is judged using temperature sensor, and exports detection
Signal when electrode feeding to preset stoping point or temperature exceed preset temperature, is automatically controlled by control unit to control unit
Blow-out；
The welding method also includes：
The proportionate relationship between welding current and electrode feeding speed is determined before welding, in welding process, by control unit root
The pushing speed of propulsive mechanism is adjusted according to the detection signal of the current sensor, electrode feeding speed is mutually fitted with burn-off rate
Match somebody with somebody；The propulsive mechanism is double-acting cylinder or hydraulic cylinder, and the chuck of automatic clamping mechanism is arranged on the piston rod for stretching out cylinder body
On, the air inlet from piston rod to gun barrel port side or inlet of the cavity that the cylinder or hydraulic cylinder are used to promote pass through ratio
Example solenoid valve control opens and closes, and control unit controls the aperture of proportion magnetic valve according to the output signal of current sensor, so as to adjust
The fltting speed of whole cylinder or hydraulic cylinder.
5. underwater dry-type electric arc welding method according to claim 4, it is characterised in that it assembles the process of welding rod
For:
Air-flow is introduced to welding gun gas nozzle, gun barrel end cap is closed using air-flow top Kaifeng, the water body around nozzle is arranged, by rifle
Pipe nozzle is aligned with welding rod warmer port, is opened warmer end cap top using gun barrel, gun barrel is inserted in warmer barrel chamber, rifle
Automatic clamping mechanism in pipe clamps welding rod after encountering welding rod, and gun barrel is withdrawn from from warmer, welding rod is assemblied in gun barrel.
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| CN201610025906.8A CN105478959B (en) | 2016-01-15 | 2016-01-15 | Underwater dry-type electric arc welder and welding method with nozzle |
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| CN201610025906.8A CN105478959B (en) | 2016-01-15 | 2016-01-15 | Underwater dry-type electric arc welder and welding method with nozzle |
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| CN105478959B true CN105478959B (en) | 2018-01-23 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392277A (en) * | 2016-11-28 | 2017-02-15 | 江苏海事职业技术学院 | Underwater local dry arc welding gun device generating vortex airflow |
| CN108274093B (en) * | 2017-12-19 | 2021-01-01 | 山西云度知识产权服务有限公司 | Electric welding device for bridge construction |
| CN109174488B (en) * | 2018-08-08 | 2020-08-18 | 西安交通大学 | Underwater spraying device |
| CN113070547B (en) * | 2021-04-19 | 2023-03-14 | 广西天正钢结构有限公司 | Steel structure on-site welding process |
| CN113452255B (en) * | 2021-06-03 | 2022-08-19 | 江苏科技大学 | Split type multifunctional underwater arc welding power supply and working method thereof |
| CN116268714A (en) * | 2023-04-14 | 2023-06-23 | 浙江旭达鞋业有限公司 | Gluing device for shoe processing and gluing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3989920A (en) * | 1975-05-15 | 1976-11-02 | Massachusetts Institute Of Technology | Underwater stud welding gun |
| US4182949A (en) * | 1976-07-21 | 1980-01-08 | The United States Of America As Represented By The Secretary Of The Navy | Self-contained, portable underwater stud welder |
| CN86206543U (en) * | 1986-11-26 | 1987-11-07 | 陈式亮 | Submarine locally dry welding apparatus |
| JPH0653316B2 (en) * | 1990-03-07 | 1994-07-20 | 新日本製鐵株式会社 | Decompression type underwater stud welding method and apparatus |
| US5981896A (en) * | 1998-08-26 | 1999-11-09 | Electric Power Research Institute, Inc. | Apparatus and method for creating dry underwater welds |
| US20050211676A1 (en) * | 2004-03-25 | 2005-09-29 | Arthur Metcalfe | Underwater ceramic electrodes |
| CN101244498B (en) * | 2007-02-16 | 2011-05-11 | 北京石油化工学院 | Partial dry type automatic welding drainage arrangement |
| CN201579553U (en) * | 2009-12-02 | 2010-09-15 | 广州中船黄埔造船有限公司 | Thermal insulation barrel for welding rods |
| CN204035769U (en) * | 2014-07-14 | 2014-12-24 | 中国人民解放军海军潜艇学院 | One is stud welding gun under water |
| CN104259637B (en) * | 2014-07-14 | 2016-08-24 | 中国人民解放军海军潜艇学院 | One Multi-functional stud welder and welding method thereof under water |
| CN104722973B (en) * | 2015-02-03 | 2016-10-05 | 华南理工大学 | A kind of Underwater Welding robot local dry-type drainage arrangement and water discharge method thereof |
| CN205380346U (en) * | 2016-01-15 | 2016-07-13 | 江苏海事职业技术学院 | Take arc welding of dry -type under water welding set of nozzle |
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