CN115637469A - Surface insulation treatment process and equipment for electrode holder electrode arm of suspension spot welding machine - Google Patents
Surface insulation treatment process and equipment for electrode holder electrode arm of suspension spot welding machine Download PDFInfo
- Publication number
- CN115637469A CN115637469A CN202211308931.9A CN202211308931A CN115637469A CN 115637469 A CN115637469 A CN 115637469A CN 202211308931 A CN202211308931 A CN 202211308931A CN 115637469 A CN115637469 A CN 115637469A
- Authority
- CN
- China
- Prior art keywords
- electrode arm
- glass fiber
- electrode
- fiber rope
- insulation treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 47
- 238000009413 insulation Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000000725 suspension Substances 0.000 title claims abstract description 16
- 239000003365 glass fiber Substances 0.000 claims abstract description 45
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 21
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 17
- 239000011651 chromium Substances 0.000 claims abstract description 17
- 238000007747 plating Methods 0.000 claims abstract description 16
- 230000004913 activation Effects 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000007598 dipping method Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000009713 electroplating Methods 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- ICLYJLBTOGPLMC-KVVVOXFISA-N (z)-octadec-9-enoate;tris(2-hydroxyethyl)azanium Chemical compound OCCN(CCO)CCO.CCCCCCCC\C=C/CCCCCCCC(O)=O ICLYJLBTOGPLMC-KVVVOXFISA-N 0.000 claims description 3
- 229960000583 acetic acid Drugs 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000012362 glacial acetic acid Substances 0.000 claims description 3
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000010288 sodium nitrite Nutrition 0.000 claims description 3
- 229940117013 triethanolamine oleate Drugs 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims 1
- 150000002191 fatty alcohols Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 18
- 239000002390 adhesive tape Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Landscapes
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention provides a suspension spot welder electrode holder surface insulation treatment process and equipment, wherein a layer of hard chromium is electroplated on the surface of an electrode arm through the process steps of local insulation treatment, oil removal, corrosion activation, chromium plating, glass fiber rope winding and the like on the electrode arm, and then the glass fiber rope is wound, so that the problem of electrode arm shunt in the spot welding process is solved. The treatment process is simple to operate and high in automation degree, and the treated electrode arm insulating layer has good insulativity, wear resistance and cutting resistance, and is long in service life and low in repair cost.
Description
Technical Field
The invention relates to the technical field of suspension spot welding machine electrode holder insulation treatment, in particular to a suspension spot welding machine electrode holder surface insulation treatment process and equipment.
Background
The quality of spot welding is a considerable problem in automotive production. The method comprises the steps that a car factory conducts half-damage inspection on welding assembly parts in daily production, and extracts a whole car body of each car type every half year to conduct full-damage inspection so as to monitor the welding quality of welding points of the car body, but local welding point failures still happen occasionally. The failure of the spot welding spot is mainly caused by various forms of shunting, namely that a part of current between two electrodes does not pass through the position of the welding spot in the welding process, so that welding heat loss is caused, the welding spot is not completely melted through, and the strength of the welding spot is reduced. When welder and part welding, because product structure is complicated, anchor clamps design is complicated, and the welding limit is narrow, and welder operating space is little, when manual operation electrode holder welding, holds very difficult to welding torch angle and position, and electrode holder electrode arm very easily contacts or interferes with product or anchor clamps when the welding, leads to the solder joint reposition of redundant personnel, avoids the reposition of redundant personnel hardly feasible through manual control welding operation. CN201710604807 soldering turret insulation protection adhesive tape and a preparation method thereof provide a preparation method of the insulation protection adhesive tape. The curing agent is doped into the adhesive tape, the adhesive tape is used for winding the electrode arm to realize insulation protection, the method has short operable time, the adhesive tape layers can only be pressed by hands, the bonding force between the adhesive tapes is poor, the service life of the adhesive tape is seriously influenced, the surface of the insulation protection adhesive tape is black after long-term use, whether the insulation layer is ground or not cannot be judged, and if the insulation layer is ground, shunting of the electrode arm possibly causes failure of a welding point.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a process and equipment for insulating the surface of an electrode arm of a welding tongs of a suspension spot welding machine.
In order to achieve the purpose, the invention provides a surface insulation treatment process for a welding tongs electrode arm of a suspension spot welding machine, which comprises the following steps:
s1, local insulation treatment of an electrode arm: the contact part of the electrode arm, the welding tongs and the electrode tip is wrapped by a rubber sleeve, and a water through hole of the electrode arm is blocked by a rubber plug;
s2, oil removal: dipping the electrode arm part in an oil removing solution to remove oil;
s3, corrosion activation: at room temperature, immersing the electrode arm part in a corrosive solution for 3min for activation;
s4, chromium plating: cleaning the electrode arm part subjected to corrosion activation by using flowing water, etching the electrode arm part in a nitric acid HNO3 solution, cleaning the electrode arm part by using flowing water again, and performing chromium plating operation;
s5, winding the glass fiber ropes: the electrode arm is wound with a glass fiber rope by a glass fiber winding machine, the glass fiber rope is positioned on a unwinding roller, the glass fiber rope is pre-soaked, heated by a heating device, the viscosity of the glass fiber rope is improved, the glass fiber rope passes through a wire nozzle and a tension pulley and is fixed on the surface of the electrode arm through rotation of an electrode arm clamping device, after the electrode arm is wound with a set part and a set thickness, the glass fiber rope on the surface of the electrode arm is solidified by a hot air gun, and the redundant part is polished by a grinding machine.
Specifically, in the step S2, the oil removing solution is prepared from: 15 to 18g/L fatty alcohol-polyoxyethylene ether AEO-7;4 to 6g/L sodium carbonate; 10 to 15g/L triethanolamine oleate; 4 to 6g/L of sodium nitrite.
Specifically, the ratio of the etching solution in the step S3 is: 25 to 30ml/L concentrated sulfuric acid H2SO4;20 to 30ml/L glacial acetic acid HAC;30 to 40ml/L of H2O2.
Specifically, in the step S4, the chromium plating operation is performed in a chromium plating solution ratio of: 200 to 250g/L CrO3;2 to 2.5g/L of concentrated sulfuric acid H2SO4; the chrome plating parameters are set as follows: the electroplating temperature is 55 to 60 ℃; the current density is 25 to 50A/dm2; the electroplating time is 120min.
Specifically, in the step S5, the prepreg solution is 196 resin +0.01% cobalt naphthenate, and the heating temperature of the heating device is 75 ℃.
On the other hand, the invention also provides equipment for winding the glass fiber rope, which consists of a rack, an uncoiling roller, a wire guide device, a worm transmission device and an electrode arm clamping device, wherein the worm transmission device is fixed on the rack, the wire guide device is arranged above the worm transmission device, the uncoiling roller is arranged on the rack on the right side of the worm transmission device, the electrode arm clamping device is arranged on the rack on the left side of the worm transmission device, the worm transmission device comprises a guide rail, a worm, a ball bearing, a stepping motor and a coupler, the guide rail is arranged on the rack, the worm is arranged between the guide rails, and the worm is connected with the stepping motor through the ball bearing and the coupler.
Further, the wire guiding device comprises a pre-dipping device, a supporting plate, a heating device and a tensioning device, the pre-dipping device comprises a pre-dipping groove and four guide rollers, the four guide rollers are distributed in an inverted boss mode, two ends of each guide roller are connected with the wall of the pre-dipping groove, the heating device is installed on the supporting plate, the tensioning device comprises wire nozzles, connecting blocks and tensioning wheels, the four tensioning wheels are four in number and distributed in a diamond shape and fixed on the connecting blocks through screws, the connecting blocks are fixed on the wire nozzles through welding, and the wire nozzles are fixed on the supporting plate through screws.
Further, electrode arm clamping device includes holder, connecting axle, connecting rod, three-jaw chuck, decelerator, reduction gear shaft coupling and brushless motor, reduction gear shaft coupling, decelerator install in proper order in the frame, the decelerator front end is connected with the three-jaw chuck, the connecting rod is fixed on the three-jaw chuck, connecting axle and connecting rod threaded connection, adopt the inner gearing structural connection between holder and the connecting axle, it is fixed to adopt screw rod, nut and gasket cooperation between holder and the connecting rod, the electrode arm is fixed on the holder through four locking screw rods.
Furthermore, the electric control system comprises a controller, an interface circuit, a stepping motor driver and a brushless motor controller, wherein the controller is an STM32F0 chip, the stepping motor driver is a constant-current control type stepping motor driver SLA7020M, the brushless motor controller is an MC33035 control chip, and the interface circuit comprises an abnormal alarm circuit, a rotating speed and turn number detection circuit, a keyboard and display interface circuit and a switch input value circuit.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the process steps of local insulation treatment, oil removal, corrosion activation, chrome plating, winding of the glass fiber rope and the like, the surface of the electrode arm is electroplated with a layer of hard chromium, and then the glass fiber rope is wound, so that the treatment process is simple to operate and high in automation degree, the treated electrode arm insulation layer has good insulation property, wear resistance and cut resistance, the service life is long, the repair cost is low, and the problem of electrode arm shunt in the spot welding process can be effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a suspension spot welder electrode holder according to an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of a glass fiber winding machine according to an embodiment of the present invention;
FIG. 3 is a prepreg box structure in an embodiment of the invention;
FIG. 4 is a schematic illustration of a tensioner in an embodiment of the present invention;
FIG. 5 is a schematic view of the electrode arm clamping mechanism in the embodiment of the present invention;
FIG. 6 is a schematic view of the electrode arm clamping mechanism in the embodiment of the present invention;
FIG. 7 is a schematic view of a connecting shaft according to an embodiment of the present invention;
FIG. 8 is a schematic view of the structure of the clamper in the embodiment of the invention;
FIG. 9 is a schematic view of a connecting rod according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an electrical control system in the embodiment of the present invention.
In the figure: 101. an electrode arm; 102. an electrode holding rod; 103 to 104, electrode tips; 105. an electrode arm; 106. a piston rod; 107. a cylinder; 201. a frame; 202 to 203 and guide rails; 204. a worm; 205. unwinding the roller; 206. pre-dipping boxes; 207. a heater; 208. a support plate; 209. a tensioner; 210. a coupling; 211. a stepping motor; 212. a rolling bearing; 213. a brushless motor; 214. a reducer coupling; 215. a reduction gear; 216. a three-jaw chuck; 217. a holder; 301. a pre-soaking tank; 302 to 305, and a guide roll; 401. a support plate; 402. connecting blocks; 403. tensioning the bolt; 404 to 406, and a tension pulley; 501. a connecting rod; 502. a gasket; 503 to 506, and locking a screw rod; 507. a clamper; 508. locking the nut; 610. and (7) connecting the shafts.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
The invention provides a surface insulation treatment process for a welding tongs electrode arm of a suspension spot welding machine, which comprises the following steps:
s1, local insulation treatment of an electrode arm: a rubber sleeve is adopted to wrap the contact part of the electrode arm, the welding tongs and the electrode tip, and a rubber plug is used for blocking a water through hole of the electrode arm;
s2, oil removal: dipping the electrode arm part in an oil removing solution to remove oil;
s3, corrosion activation: immersing the electrode arm part in a corrosive solution for 3min at room temperature for activation;
s4, chromium plating: cleaning the electrode arm part subjected to corrosion activation by using flowing water, etching the electrode arm part in a nitric acid HNO3 solution, cleaning the electrode arm part by using flowing water again, and performing chromium plating operation;
s5, winding the glass fiber ropes: the electrode arm is wound with a glass fiber rope by a glass fiber winding machine, the glass fiber rope is positioned on a unwinding roller, the glass fiber rope is pre-soaked, heated by a heating device, the viscosity of the glass fiber rope is improved, the glass fiber rope passes through a wire nozzle and a tension pulley and is fixed on the surface of the electrode arm through rotation of an electrode arm clamping device, after the electrode arm is wound with a set part and a set thickness, the glass fiber rope on the surface of the electrode arm is solidified by a hot air gun, and the redundant part is polished by a grinding machine.
Preferably, the oil removing solution in the step S2 is prepared from the following components in percentage by weight: 15 to 18g/L fatty alcohol-polyoxyethylene ether AEO-7;4 to 6g/L sodium carbonate; 10 to 15g/L triethanolamine oleate; 4 to 6g/L of sodium nitrite.
Preferably, the ratio of the etching solution in step S3 is: 25 to 30ml/L concentrated sulfuric acid H2SO4;20 to 30ml/L glacial acetic acid HAC;30 to 40ml/L30% of H2O2.
Preferably, in the step S4, the chrome plating operation includes: 200 to 250g/L CrO3;2 to 2.5g/L of concentrated sulfuric acid H2SO4; the chrome plating parameters are set as follows: the electroplating temperature is 55 to 60 ℃; the current density is 25 to 50A/dm2; the electroplating time is 120min.
Preferably, the pre-dipping solution in the step S5 is 196 resin and 0.01% cobalt naphthenate, and the heating temperature of the heating device is 75 ℃.
Further, on the basis of the insulation treatment process for the surface of the electrode arm of the electrode holder of the hanging spot welding machine, as shown in fig. 1-10, the present embodiment also provides a device for winding a glass fiber rope, which comprises a frame 201, an uncoiling roller 205, a wire guide device, a worm transmission device and an electrode arm clamping device, wherein the worm transmission device is fixed on the frame 201 and used for adjusting a wire feeding position, the wire guide device is arranged above the worm transmission device and used for feeding wires, the uncoiling roller 205 is arranged on the frame 201 on the right side of the worm transmission device and used for winding the glass fiber rope, the diameter of the glass fiber rope is 0.6mm, the electrode arm clamping device is arranged on the frame on the left side of the worm transmission device and used for clamping the electrode arm to make a rotating motion, the worm transmission device comprises a guide rail, a worm 204, a ball bearing, a stepping motor 211 and a coupler 210, the guide rail is arranged on the frame, the worm 204 is arranged between the guide rails, and the worm 204 is connected with the stepping motor 211 through the ball bearing and the coupler 210.
Specifically, the wire guiding device comprises a pre-dipping device, a supporting plate 401, a heating device and a tensioning device, the pre-dipping device comprises a pre-dipping groove and four guide rollers, the four guide rollers are distributed in an inverted boss mode, two ends of each guide roller are connected with the wall of the pre-dipping groove, the heating device is installed on the supporting plate 401, the tensioning device comprises wire nozzles, connecting blocks 402 and tensioning wheels, the four tensioning wheels are distributed in a diamond mode and fixed on the connecting blocks 402 through screws, the connecting blocks 402 are fixed on the wire nozzles through welding, and the wire nozzles are fixed on the supporting plate through screws.
Specifically, electrode arm clamping device includes holder, connecting axle 610, connecting rod 501, three-jaw chuck 216, decelerator 215, reduction gear coupling 214 and brushless motor 213, reduction gear coupling 214, decelerator 215 are installed in proper order on frame 201, decelerator 215 front end is connected with three-jaw chuck 216, connecting rod 501 is fixed on three-jaw chuck 216, connecting axle 610 and connecting rod 501 threaded connection, adopt the interior meshing structure to connect between holder and the connecting axle 610, the relative angle of holder 218 and connecting axle 601 can be adjusted wantonly, through the relative position who adjusts holder 218 and connecting axle 601 to when guaranteeing electrode arm 101 winding 520 position, 520 sections of electrode arm is parallel with the decoiler 205, when electrode arm 101 winds 521 position, 521 sections of electrode arm is parallel with the decoiler 205, thereby accomplishes electrode arm 101 glass fiber rope winding. The electrode arm is fixed on the holder through four locking screws, and the clamping position is the contact position of the electrode arm 101 and the electrode holding rod 102.
Specifically, the electric control system comprises a controller, an interface circuit, a stepping motor driver and a brushless motor controller, wherein the controller is an STM32F0 chip, the stepping motor driver is a constant-current control type stepping motor driver SLA7020M, the brushless motor controller is an MC33035 control chip, and the interface circuit comprises an abnormal alarm circuit, a rotating speed and turn number detection circuit, a keyboard and display interface circuit and a switch input quantity circuit. Through the various settings of keyboard interface circuit setting winding position and the number of turns, the controller passes through rotational speed and number of turns detection circuit statistics winding number of turns and winding speed, through DA circuit and brushless motor controller adjustment DC brushless motor rotational speed, makes it can be stabilized on the rotational speed of settlement when twining. The D/A circuit employs a MAX526D/A converter. The controller controls the rotating speed and the rotating direction of the stepping motor through the stepping motor driver.
Still further, in this embodiment, on the basis of the above insulating treatment process for the surface of the electrode holder of the suspension spot welding machine and the winding apparatus for the glass fiber rope, a repairing method for the damaged insulating layer of the electrode holder when the partially chromium-plated layer and the glass fiber layer are damaged is further provided:
firstly, removing a glass fiber layer and a chromium coating layer according to the following steps:
(1) Polishing a glass fiber layer at the damaged part of the electrode arm along the circumferential direction of the electrode arm on a grinding machine, and polishing the glass fiber layer to form a circular ring belt-shaped surface with a neat edge;
(2) Wrapping the surfaces of the electrode arms except the surfaces of the other parts of the annular belt-shaped surfaces by using a rubber belt, and blocking the water through holes of the electrode arms by using rubber plugs;
(3) The electrode arm parts were immersed in the following solutions to electrolytically remove chromium, and then washed with running water.
120-150 g/L of sodium hydroxide
The current density is 8 to 10A/dm 2
Temperature room temperature
Until time is faded
Cathode iron plate
And then, carrying out local insulation treatment on the damaged part of the electrode arm according to the insulation treatment process.
In conclusion, in the spot welding production process of the electrode arm treated by the surface insulation treatment process of the electrode arm of the suspension spot welding machine electrode holder, when the electrode arm insulation layer is frequently collided and rubbed with a clamp and a workpiece and oil stains are accumulated, the glass fiber insulation layer becomes thin and the surface of the electrode arm insulation layer is blackened, and further the glass fiber insulation layer at a certain position is abraded, the bright chromium coating layer on the inner surface of the electrode arm insulation layer is exposed, and a worker can judge whether the insulation layer of the glass fiber rope outside the electrode arm is damaged or not by observing whether the chromium coating layer is exposed or not so as to replace the glass fiber insulation layer of the electrode arm in time and effectively avoid shunting.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (9)
1. The surface insulation treatment process for the electrode arm of the welding tongs of the suspension spot welding machine is characterized by comprising the following steps of:
s1, local insulation treatment of an electrode arm: the contact part of the electrode arm, the welding tongs and the electrode tip is wrapped by a rubber sleeve, and a water through hole of the electrode arm is blocked by a rubber plug;
step S2, oil removal: dipping the electrode arm part in an oil removing solution to remove oil;
s3, corrosion activation: immersing the electrode arm part in a corrosive solution for 3min at room temperature for activation;
s4, chromium plating: cleaning the electrode arm part subjected to corrosion activation by using flowing water, etching the electrode arm part in a nitric acid HNO3 solution, cleaning the electrode arm part by using flowing water again, and performing chromium plating operation;
s5, winding the glass fiber ropes: the electrode arm is wound with a glass fiber rope by a glass fiber winding machine, the glass fiber rope is positioned on a unwinding roller, the glass fiber rope is pre-soaked, heated by a heating device, the viscosity of the glass fiber rope is improved, the glass fiber rope passes through a wire nozzle and a tension pulley and is fixed on the surface of the electrode arm through rotation of an electrode arm clamping device, after the electrode arm is wound with a set part and a set thickness, the glass fiber rope on the surface of the electrode arm is solidified by a hot air gun, and the redundant part is polished by a grinding machine.
2. The surface insulation treatment process for the electrode arm of the welding tongs of the suspension spot welding machine as claimed in claim 1, wherein the oil removing solution in the step S2 comprises the following components in percentage by weight: 15 to 18g/L fatty alcohol polyoxyethylene ether AEO-7;4 to 6g/L sodium carbonate; 10 to 15g/L triethanolamine oleate; 4 to 6g/L of sodium nitrite.
3. The surface insulation treatment process for the electrode arm of the welding tongs of the suspension spot welding machine as claimed in claim 1, wherein the proportion of the corrosive solution in the step S3 is as follows: 25 to 30ml/L concentrated sulfuric acid H 2 SO 4 (ii) a 20 to 30ml/L glacial acetic acid HAC;30 to 40ml/L30% 2 O 2 。
4. The surface insulation treatment process for the electrode arm of the suspension spot welder electrode holder according to claim 1, characterized in that in the step S4, the chromium plating operation is performed by using chromium plating solution with the following mixture ratio: 200 to 250g/L CrO 3 (ii) a 2 to 2.5g/L concentrated sulfuric acid H 2 SO 4 (ii) a The chrome plating parameters are set as follows: the electroplating temperature is 55 to 60 ℃; current density 25 to 50A/dm 2 (ii) a The electroplating time is 120min.
5. The process for insulating the surface of the electrode arm of the welding tongs of the suspension spot welder as claimed in claim 1, wherein the pre-dipping solution in the step S5 is 196 resin +0.01% cobalt naphthenate, and the heating temperature of the heating device is 75 ℃.
6. The glass fiber rope winding device according to claim 1, which comprises a frame, a unwinding roller, a thread guide device, a worm transmission device and an electrode arm clamping device, wherein the worm transmission device is fixed on the frame, the thread guide device is arranged above the worm transmission device, the unwinding roller is arranged on the frame on the right side of the worm transmission device, the electrode arm clamping device is arranged on the frame on the left side of the worm transmission device, the worm transmission device comprises a guide rail, a worm, a ball bearing, a stepping motor and a coupler, the guide rail is arranged on the frame, the worm is arranged between the guide rails, and the worm is connected with the stepping motor through the ball bearing and the coupler.
7. The apparatus according to claim 6, wherein the yarn guide device comprises a pre-dipping device, a support plate, a heating device and a tensioning device, the pre-dipping device comprises a pre-dipping tank and four guide rollers, the four guide rollers are distributed in an inverted boss manner, two ends of each guide roller are connected with the wall of the pre-dipping tank, the heating device is mounted on the support plate, the tensioning device comprises four yarn nozzles, connecting blocks and tensioning wheels, the four tensioning wheels are distributed in a diamond manner and fixed on the connecting blocks through screws, the connecting blocks are fixed on the yarn nozzles through welding, and the yarn nozzles are fixed on the support plate through screws.
8. The equipment for winding the glass fiber rope as claimed in claim 6, wherein the electrode arm clamping device comprises a clamp holder, a connecting shaft, a connecting rod, a three-jaw chuck, a speed reducer coupler and a brushless motor, the speed reducer coupler and the speed reducer are sequentially mounted on the frame, the front end of the speed reducer is connected with the three-jaw chuck, the connecting rod is fixed on the three-jaw chuck, the connecting shaft is in threaded connection with the connecting rod, the clamp holder is connected with the connecting shaft through an inner meshing structure, the clamp holder is fixed with the connecting rod through screws, nuts and gaskets, and the electrode arm is fixed on the clamp holder through four locking screws.
9. The apparatus according to claim 6, wherein the electrical control system comprises a controller, an interface circuit, a stepping motor driver and a brushless motor controller, the controller is an STM32F0 chip, the stepping motor driver is a constant current control type stepping motor driver SLA7020M, the brushless motor controller is an MC33035 control chip, and the interface circuit comprises an abnormality alarm circuit, a rotation speed and turn number detection circuit, a keyboard and display interface circuit and a switch input quantity circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211308931.9A CN115637469A (en) | 2022-10-25 | 2022-10-25 | Surface insulation treatment process and equipment for electrode holder electrode arm of suspension spot welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211308931.9A CN115637469A (en) | 2022-10-25 | 2022-10-25 | Surface insulation treatment process and equipment for electrode holder electrode arm of suspension spot welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115637469A true CN115637469A (en) | 2023-01-24 |
Family
ID=84947489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211308931.9A Pending CN115637469A (en) | 2022-10-25 | 2022-10-25 | Surface insulation treatment process and equipment for electrode holder electrode arm of suspension spot welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115637469A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB646277A (en) * | 1948-10-11 | 1950-11-15 | Geoffrey Russell Stafford Char | Improvements in or relating to electrical insulators for carrying tensile loads |
| US3469070A (en) * | 1967-06-29 | 1969-09-23 | Arthur A Bernard | Arc welding gun |
| US3488468A (en) * | 1966-06-24 | 1970-01-06 | Air Reduction | Welding nozzle locking mechanism |
| US3578942A (en) * | 1969-10-14 | 1971-05-18 | Ford Motor Co | Welding electrode assembly |
| DE4239369A1 (en) * | 1992-11-24 | 1994-05-26 | Bayerische Motoren Werke Ag | Multilayer insulation protection for electrode arms of spot resistant welder - is made of insulation layer with intermediate support shell |
| RU2245768C2 (en) * | 2001-12-24 | 2005-02-10 | Сергей Николаевич Аникин | Electrode holder for manual electric arc welding |
| US20070199556A1 (en) * | 2006-02-17 | 2007-08-30 | Toshio Murai | Resistance spot welder |
| CN108296703A (en) * | 2017-12-11 | 2018-07-20 | 安徽宝辰机电设备科技有限公司 | A kind of electrode machining treatment process of projection welder |
-
2022
- 2022-10-25 CN CN202211308931.9A patent/CN115637469A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB646277A (en) * | 1948-10-11 | 1950-11-15 | Geoffrey Russell Stafford Char | Improvements in or relating to electrical insulators for carrying tensile loads |
| US3488468A (en) * | 1966-06-24 | 1970-01-06 | Air Reduction | Welding nozzle locking mechanism |
| US3469070A (en) * | 1967-06-29 | 1969-09-23 | Arthur A Bernard | Arc welding gun |
| US3578942A (en) * | 1969-10-14 | 1971-05-18 | Ford Motor Co | Welding electrode assembly |
| DE4239369A1 (en) * | 1992-11-24 | 1994-05-26 | Bayerische Motoren Werke Ag | Multilayer insulation protection for electrode arms of spot resistant welder - is made of insulation layer with intermediate support shell |
| RU2245768C2 (en) * | 2001-12-24 | 2005-02-10 | Сергей Николаевич Аникин | Electrode holder for manual electric arc welding |
| US20070199556A1 (en) * | 2006-02-17 | 2007-08-30 | Toshio Murai | Resistance spot welder |
| CN108296703A (en) * | 2017-12-11 | 2018-07-20 | 安徽宝辰机电设备科技有限公司 | A kind of electrode machining treatment process of projection welder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211708342U (en) | Pipeline all-position automatic TIG welding machine | |
| CN115637469A (en) | Surface insulation treatment process and equipment for electrode holder electrode arm of suspension spot welding machine | |
| CN115321273B (en) | Coiling device for tinned copper wire processing | |
| CN103531303B (en) | Welding cladding process is adopted to produce the technique of soft state copper covered steel wire | |
| CN113560063A (en) | Electric arc spraying equipment for inner wall of pipeline | |
| CN109273244B (en) | Winding process of superconducting CICC cylindrical coil | |
| CN112798424B (en) | Tire bead wire on-line measuring device | |
| CN108710055B (en) | Cable on-line disconnection detection device and method | |
| CN112111703A (en) | Galvanized device for surface of I-steel | |
| CN216477190U (en) | Wax-proof coating oil pipe | |
| CN216037872U (en) | Textile yarn winding device | |
| CN114951079A (en) | Straight welding wire cleaning method | |
| CN212194917U (en) | Waterproof mechanism for outlet end of wheel shaft of electric vehicle | |
| CN210736923U (en) | Steel cord reverse plating device | |
| CN210029572U (en) | Precise tension control automatic stranding cage machine for outdoor optical cable | |
| CN219642605U (en) | A quick braiding equipment for cable processing | |
| CN113369637B (en) | Online surfacing device and method for conical roller of ring rolling machine | |
| CN220766092U (en) | Device for preventing wire arrangement from being uneven | |
| CN219009532U (en) | Wire winding device | |
| CN208266320U (en) | A kind of filament yarn winding apparatus | |
| CN112760684A (en) | Steel cord reverse plating device | |
| CN118218512A (en) | Flattening and winding device for processing electrothermal alloy wires | |
| CN220079163U (en) | Tungsten carbide spraying plating clamping fixing frame for roller repair | |
| CN221543716U (en) | Take-up pulley expansion fastening fixing device | |
| CN217141574U (en) | Straight pipe section pulling and washing workbench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |