CN114749781A - Environment-friendly electronic product spot welding device and method with smoke absorption loop - Google Patents
Environment-friendly electronic product spot welding device and method with smoke absorption loop Download PDFInfo
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- CN114749781A CN114749781A CN202210441950.2A CN202210441950A CN114749781A CN 114749781 A CN114749781 A CN 114749781A CN 202210441950 A CN202210441950 A CN 202210441950A CN 114749781 A CN114749781 A CN 114749781A
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- 238000003466 welding Methods 0.000 title claims abstract description 332
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 103
- 239000000779 smoke Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 21
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 238000001179 sorption measurement Methods 0.000 claims description 72
- 238000006073 displacement reaction Methods 0.000 claims description 52
- 239000002910 solid waste Substances 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 102220159183 rs779048359 Human genes 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 102220152218 rs143647619 Human genes 0.000 description 1
- 102220305346 rs1555469504 Human genes 0.000 description 1
- 102220302183 rs370972197 Human genes 0.000 description 1
- 102220202945 rs748892906 Human genes 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Classifications
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- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to an environment-friendly electronic product spot welding device with a smoke absorption loop, which comprises an electric welding gun, a smoke absorption loop and a control system, wherein the electric welding gun is used for spot welding an electronic product; the stabilizing mechanism is connected with the electric welding gun and used for maintaining the stability of the electric welding gun, wherein the stabilizing mechanism comprises a first sliding unit and a supporting unit; the absorption mechanism is connected with the electric welding gun and is used for absorbing the smoke of the welding spot; the control mechanism is used for adjusting the supporting force of the stabilizing mechanism and the rotating speed of the absorbing unit according to the deviation distance of the spot welding position, acquiring that the deviation distance of the spot welding position is larger than a preset value, judging and adjusting the supporting force of the supporting unit by the control mechanism to enable the spot welding position to accord with a preset standard, acquiring the stability degree of the current electric welding gun by the control mechanism according to the detection mechanism, and adjusting the supporting force of the supporting unit according to the stability degree of the current electric welding gun to enable the spot welding of the electronic product to accord with the preset standard.
Description
Technical Field
The invention relates to the field of spot welding of electronic products, in particular to an environment-friendly spot welding device for electronic products, which is provided with a smoke absorption loop.
Background
Due to the feature of precision, electronic products generally need to include the following four steps after entering the soldering process: 1. spot welding: welding an enameled wire leading-out contact of an electronic product; 2. breaking the wire: cutting off the tail of the welded enameled wire; 3. testing and dredging: carrying out welding quality detection on the electronic element after welding and wire breaking are finished; 4. dispensing: and carrying out dispensing curing and insulation protection on the electronic components qualified in the testing by using a dispenser to carry out the dispensing curing and the insulation protection on the welding spots. Wherein, spot welding plays crucial effect to the subsequent use quality problems of electronic product, and traditional spot welding mode is mostly through manual, at artifical manual removal in-process, because the people makes power size and the difference that makes the power direction for the skew of electric welding gun or electronic product probably causes in the removal process leads to two work piece welding points to appear the skew, makes fixed unstability between the work piece on the one hand, and on the other hand also can cause the harm to electronic product, may have hidden danger during the later stage use.
Chinese patent ZL201210185599.1 discloses an autonomous mobile type shaking hot wire TIG welding robot system for welding large-scale precision equipment, and provides a system which can autonomously and flexibly move on the surface of the precision equipment at all positions, reliably adsorb and implement shaking hot wire TIG all-position welding operation and has good comprehensive performance, but the technical problem of how to ensure that spot welding positions meet preset standards is not solved.
Disclosure of Invention
Therefore, the invention provides an environment-friendly electronic product spot welding device with a smoke absorption loop, which can solve the technical problem that the rotating speed of an absorption mechanism and the supporting force of a stabilizing mechanism cannot be adjusted according to the offset distance of a spot welding position so that the spot welding position meets the preset standard.
In order to achieve the above object, in one aspect, the present invention provides an environmental protection type electronic product spot welding device with a smoke absorption loop, including:
the electric welding gun is used for spot welding of electronic products;
the stabilizing mechanism is connected with the electric welding gun and used for maintaining the stability of the electric welding gun, wherein the stabilizing mechanism comprises a first sliding unit and a supporting unit;
the absorption mechanism is connected with the electric welding gun and used for absorbing smoke of welding spots, the absorption mechanism comprises an absorption unit and a rotating unit for controlling the absorption unit to rotate, the absorption unit comprises an adsorption unit arranged in an absorption pipe, an air suction unit for controlling the absorption amount of the smoke and a filtering unit for filtering the smoke, the adsorption unit comprises an adsorption net for adsorbing solid wastes and a weight sensor arranged on the adsorption net, and the weight sensor is used for acquiring the weight of the solid wastes on the adsorption net;
the detection mechanism is connected with the supporting unit and used for acquiring the stability of the electric welding gun;
the control mechanism is connected with the electric welding gun, the stabilizing mechanism, the absorbing mechanism and the detecting mechanism and used for adjusting the supporting force of the stabilizing mechanism and the rotating speed of the absorbing unit according to the spot welding position deviation distance, wherein the control mechanism obtains that the spot welding position deviation distance is larger than a preset value, the control mechanism judges and adjusts the supporting force of the supporting unit so that the spot welding position meets a preset standard, the control mechanism obtains the stability degree of the current electric welding gun according to the detecting mechanism and adjusts the supporting force of the supporting unit according to the stability degree of the current electric welding gun, and meanwhile the control mechanism controls the rotating speed of the rotating unit to adjust the absorbing unit according to the adsorption quantity obtained by the adsorption unit so that the spot welding of an electronic product meets the preset standard.
Further, the control mechanism obtains the deviation distance D of the spot welding position and compares the deviation distance D with the deviation distance D of the spot welding position preset by the control mechanism, and judges whether the current spot welding position meets the preset standard or not, wherein,
when D is less than or equal to D1, the control mechanism judges that the current spot welding position meets the preset standard;
when D1 is greater than D and less than D2, the control mechanism judges that the current electric welding position meets the preset standard, and the control mechanism adjusts the rotation speed of the absorption unit according to the absorption amount obtained by the absorption unit;
when D is larger than or equal to D2, the control mechanism judges that the current spot welding position does not meet the preset standard, and the control mechanism adjusts the supporting force of the supporting unit of the stabilizing mechanism according to the stability degree of the electric welding gun obtained by the detection mechanism;
the control mechanism presets a spot welding position offset distance D, sets a first preset spot welding position offset distance D1 and a second preset spot welding position offset distance D2.
Further, the control mechanism acquires the deviation distance of the current spot welding position at a first preset spot welding position deviation distance and a second preset spot welding position deviation distance, acquires the adsorption quantity Δ M of the adsorption unit within a preset time, compares the acquired adsorption quantity with a preset adsorption quantity M, and judges whether the current spot welding solid waste generation quantity meets a preset standard or not, wherein,
when the delta M is less than or equal to M1, the control mechanism judges that the generation amount of the solid waste of the current spot welding meets the preset standard;
when M1 is smaller than Δ M and smaller than M2, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not meet the preset standard, and the control mechanism improves the rotation speed of the absorption unit;
when the delta M is larger than or equal to M2, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not accord with the preset standard, the control mechanism improves the rotation speed of the absorption unit and simultaneously improves the heating temperature of the electric welding gun;
the control mechanism presets an adsorption amount M, sets a first preset adsorption amount M1 and a second preset adsorption amount M2.
Further, the control mechanism obtains the adsorption amount between a first preset adsorption amount and a second preset adsorption amount, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not meet a preset standard, the control mechanism increases the rotation speed p to p1 of the absorption unit, and sets p1= p x (1+ (. DELTA.m-M1) x (M2-. DELTA.m)/(M1. times.M 2)).
Further, the control means obtains the suction amount equal to or greater than a second preset suction amount, and increases the rotation rate p to p2 of the suction unit, sets p2= p × (1+ (. DELTA.m-M2)/M2), and at the same time, increases the heating temperature w to w1 of the electric welding gun, and sets w1= w × (1+ (. DELTA.m-M2)/M2).
Further, the rotating unit comprises a rotator connected with the absorbing unit and a first motor for controlling the rotating speed of the rotator, wherein the first motor is connected with the rotator, the absorbing unit comprises an absorbing pipe and an air suction pump for controlling the smoke absorption capacity, the control mechanism presets a rotating speed rate P, the control mechanism obtains the rotating speed rate of the absorbing unit and compares the rotating speed rate with the preset rotating speed rate to adjust the power parameter of the first motor and the pressure of the air suction pump, wherein,
when pi is less than or equal to P, the control mechanism increases the power parameter F1 of the first motor to F11;
when pi is larger than P, the control mechanism increases the power parameter F1 of the first motor to F12, and the control mechanism increases the pressure Fx of the suction pump to Fx 1;
wherein i =1, 2.
Further, the support unit includes a first supporter contacting one side of the electric welding gun and a second supporter contacting the other side of the electric welding gun, wherein the first supporter includes a first connection plate, a second motor controlling a supporting force of the first connection plate, and a first spring for damping vibration, the second supporter includes a second connection plate, a third motor controlling a supporting force of the second connection plate, and a second spring for damping vibration, the detection mechanism includes a first displacement sensor connected to the first spring, and a second displacement sensor connected to the second spring, the detection mechanism acquires a degree of stability s of the electric welding gun based on a displacement amount s1 of the first spring acquired by the first displacement sensor and a displacement amount s2 of the second spring acquired by the second displacement sensor, sets s = (1+ (s1-s10)/s10) × (1+ (s2-s20)/s20), wherein s10 is the first standard value of spring displacement preset by the control mechanism, and s20 is the second standard value of spring displacement preset by the control mechanism.
Further, the control mechanism obtains the offset distance of the spot welding position to be greater than or equal to a second preset offset distance of the spot welding position, and the control mechanism judges whether the current electric welding gun is stable or not according to the comparison between the stability degree S of the current electric welding gun obtained by the detection mechanism and the preset stability degree S0 of the control mechanism, wherein,
when S is less than S0, the control mechanism judges that the current welding gun is stable, adjusts the positioning of the welding gun and simultaneously increases the absorbing pump pressure Fx 'to Fx 1';
and when S is larger than or equal to S0, the control mechanism judges that the welding gun is unstable currently, and the control mechanism judges to adjust the supporting force of the supporting unit according to the displacement of the first spring and the displacement of the second spring.
Further, the control means determines that the electric welding gun is currently unstable, acquires a difference Δ S between the displacement amount S1 of the first spring and the displacement amount S2 of the second spring, sets Δ S = S1-S2, and compares the difference with a preset difference Δ S to adjust the supporting force of the supporting unit, wherein,
when the delta S is more than or equal to the delta S1, the control mechanism increases the power parameters F3 to F31 of the third motor, and reduces the power parameters F2 to F21 of the second motor;
when the power parameter of the third motor is increased from F3 to F32 by the control mechanism and the power parameter of the second motor is increased from F2 to F22 by the control mechanism when the power parameter of the third motor is increased from S1 to S2;
when the delta S is not less than or equal to the delta S2, the control mechanism improves the power parameters F2 to F23 of the second motor, and reduces the power parameters F3 to F32 of the third motor;
the control mechanism presets a difference value deltaS, and sets a first preset difference value deltaS 1 and a second preset difference value deltaS 2.
In another aspect, the present invention provides an environmental protection type spot welding method for electronic products, comprising,
step S1, placing the electronic product to be spot-welded on a placing table, and clamping the electronic product to be spot-welded by a clamping mechanism;
step S2, the electric welding gun performs spot welding on the position to be spot welded;
step S3, the control means adjusts the supporting force of the stabilizing means and the rotational speed of the absorbing means according to the spot welding position deviation distance;
and step S4, the absorption mechanism absorbs the solid waste and the smoke around the spot welding according to the acquired rotation rate of the absorption unit and the pressure of the suction pump.
Compared with the prior art, the welding device has the beneficial effects that the welding device is provided with a control mechanism for adjusting the supporting force of the stabilizing mechanism and the rotating speed of the absorption unit according to the deviation distance of the spot welding position, wherein the control mechanism obtains that the deviation distance of the spot welding position is larger than a preset value, the control mechanism judges and adjusts the supporting force of the supporting unit so as to enable the spot welding position to meet the preset standard, the control mechanism obtains the current stability degree of the electric welding gun according to the detection mechanism and adjusts the supporting force of the supporting unit according to the current stability degree of the electric welding gun, and meanwhile, the control mechanism controls the rotating unit according to the absorption amount obtained by the absorption unit so as to adjust the rotating speed of the absorption unit, so that the spot welding of an electronic product meets the preset standard.
In particular, the control mechanism of the invention divides the preset spot welding position deviation distance into two definite standards, the control mechanism compares the obtained spot welding position deviation distance with the preset spot welding position deviation distance, and judges whether the spot welding position is accurate, wherein, when the spot welding position deviation distance obtained by the control mechanism is less than or equal to the first preset spot welding position deviation distance, the current spot welding position is accurate and the spot welding position accords with the preset standard, when the control mechanism obtains that the spot welding position deviation distance is between the first preset spot welding position deviation distance and the second preset spot welding position deviation distance, the current spot welding position is accurate but has a certain deviation, in order to avoid the deviation from expanding, the control mechanism judges whether the current spot welding operation process is reasonable or not through the adsorption quantity obtained by the adsorption unit, and then adjusts the rotation speed of the adsorption unit, the spot welding position deviation distance that acquires when control mechanism predetermines electric welding position deviation distance as the second, explains that current spot welding position is inaccurate, and the spot welding position is not conform to preset standard, for correcting the spot welding position of electric welding gun, ensures next spot welding position accurate, and control mechanism passes through detection mechanism acquires the stability of electric welding gun is in order to right stabilizing mechanism's supporting element holding power is adjusted.
Particularly, the control mechanism of the invention is provided with an adsorption amount, and judges whether the currently generated solid waste meets a preset standard or not by comparing the obtained adsorption amount with a preset adsorption amount, so as to judge whether the operation of the current spot welding position is in compliance, wherein if the adsorption amount of the current spot welding position obtained by the control mechanism is less than or equal to a first preset adsorption amount, the quantity of the currently generated solid waste in the spot welding process meets the preset standard, so as to explain the operation compliance of the current spot welding position, if the adsorption amount of the current spot welding position obtained by the control mechanism is between the first preset adsorption amount and a second preset adsorption amount, the current generation quantity of the solid waste is more, in order to avoid inaccurate obtaining of the offset distance of the spot welding position due to larger smoke gas quantity in the generation process of the solid waste, the control mechanism improves the rotation speed of the absorption unit so as to improve the absorption efficiency, if the control mechanism obtains that the adsorption capacity of current spot welding position is more than or equal to the second and predetermines the adsorption capacity, explain that a large amount of solid waste has been produced in the current spot welding process, the reason that causes this condition lies in that the spot welding temperature is low excessively for welding material has produced incomplete combustion, and control mechanism is through improving the slew rate of absorption unit in order to absorb a large amount of flue gas, improves electric welding gun's heating temperature simultaneously, reduces the production of discarded object, the effect of guarantee spot welding.
Particularly, the invention is provided with a suction pump which controls the rotation speed of the rotator by adjusting the power parameter of the first motor and can control the suction amount to avoid the poor absorption effect caused by the overlarge rotation speed of the absorption unit, wherein the rotation speed of the absorption unit acquired by the control mechanism is less than or equal to the rotation speed, the control mechanism increases the rotation speed by adjusting the power parameter of the first motor, the rotation speed of the absorption unit acquired by the control mechanism is greater than the preset rotation speed, and the pressure of the suction pump is increased while the control mechanism adjusts the power parameter of the first motor to increase the rotation speed, thereby avoiding the situation that the absorption of smoke and waste is not in accordance with the preset standard caused by the overlarge rotation speed.
Particularly, the invention is provided with a detection mechanism connected with a supporting unit, the detection mechanism acquires the displacement of a first supporter and the displacement of a second supporter which are respectively different from the displacement standard values, the stability of the electric welding gun is comprehensively acquired, the stability of the electric welding gun is acquired according to the displacement of the electric welding gun acquired by the detection mechanism, a control mechanism compares the acquired stability of the electric welding gun with a preset stability and judges whether the current spot welding process of the electric welding gun is stable or not, wherein the control mechanism acquires that the stability of the current electric welding gun is less than the preset stability, which indicates that the current electric welding gun is stable in spot welding and causes that the deviation distance of the spot welding position exceeds the second preset stability because the positioning of the spot welding operation of the electric welding gun is not accurate, the control mechanism judges that the positioning of the electric welding gun is adjusted, simultaneously the pressure of an absorption pump is improved, and the inaccuracy of the acquisition of the deviation distance of the spot welding position due to overlarge smoke is avoided, the control mechanism obtains the current welding gun stability degree which is more than or equal to the preset stability degree, the control mechanism judges that the current welding gun is unstable in spot welding, and the control mechanism judges that the supporting force of the supporting unit is adjusted according to the displacement of the first spring and the displacement of the second spring so that the stability degree of the welding gun meets the preset standard.
In particular, the control mechanism of the present invention determines that the welding gun is unstable, the control mechanism obtains a difference between the first spring displacement and the second spring displacement and compares the difference with a preset value, and adjusts the power parameters of the second motor and the third motor to control the stability of the welding gun, wherein, when the obtained difference is smaller than or equal to a first preset difference, the deviation of the welding gun to the direction of the second support is indicated, the control mechanism increases the supporting force of the second support by adjusting the power parameter of the third motor, and simultaneously adjusts the power parameter of the second motor to reduce the supporting force of the first support, when the obtained difference is between the first preset difference and a second preset difference, the control mechanism ensures the stability of the welding gun by simultaneously increasing the supporting force of the first support and the second support, and when the obtained difference is larger than or equal to the second preset difference, the deviation of the welding gun to the direction of the first support is indicated, the control mechanism adjusts the power parameter of the third motor to reduce the supporting force of the second support, and adjusts the power parameter of the second motor to improve the supporting force of the first support, so that the stability of the electric welding gun is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of an environmental protection type electronic product spot welding device with a smoke absorption loop according to an embodiment;
FIG. 2 is a schematic structural view of a stabilizing mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic view of an embodiment of an absorbing mechanism according to the invention;
FIG. 4 is a schematic view of a placement mechanism according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a spot welding method for an environment-friendly electronic product according to an embodiment of the invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in conjunction with the following examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of an environmental protection type electronic product spot welding device with a smoke absorption loop according to an embodiment of the present invention, which includes an electric welding gun 1 for spot welding an electronic product; the stabilizing mechanism 2 is connected with the electric welding gun and used for maintaining the stability of the electric welding gun, wherein the stabilizing mechanism comprises a first sliding unit and a supporting unit; the absorption mechanism 3 is connected with the electric welding gun and is used for absorbing the smoke of the welding spot; the detection mechanism is connected with the supporting unit and is used for acquiring the stability of the electric welding gun; the control mechanism is connected with the electric welding gun, the stabilizing mechanism, the absorbing mechanism and the detecting mechanism and used for adjusting the supporting force of the stabilizing mechanism and the rotating speed of the absorbing unit according to the spot welding position deviation distance, wherein the control mechanism obtains that the spot welding position deviation distance is larger than a preset value, the control mechanism judges and adjusts the supporting force of the supporting unit so that the spot welding position meets a preset standard, the control mechanism obtains the stability degree of the current electric welding gun according to the detecting mechanism and adjusts the supporting force of the supporting unit according to the stability degree of the current electric welding gun, and meanwhile the control mechanism controls the rotating speed of the rotating unit to adjust the absorbing unit according to the adsorption quantity obtained by the adsorption unit so that the spot welding of an electronic product meets the preset standard.
Referring to fig. 2, it is a schematic structural diagram of a stabilizing mechanism according to an embodiment of the present invention, which includes a first sliding unit and a supporting unit, wherein the first sliding unit includes a first sliding rod, a first loop 22 and a second sliding rod 20 disposed on the first sliding rod, and a second loop 28 disposed on the second sliding rod, the first loop is connected to a first supporting device, the second loop is connected to a second supporting device, the first supporting device includes a first connecting plate 23, a second motor 24 for controlling a supporting force of the first connecting plate, and a first spring 27 for damping, the second supporting device includes a second connecting plate 29, a third motor 25 for controlling a supporting force of the second connecting plate, and a second spring 26 for damping, and the embodiment of the present invention does not limit a manner of adjusting a supporting force of the first supporting device by the second motor, and adjusting a supporting force of the second supporting device by the third motor, the embodiment of the invention provides a preferable implementation scheme, taking a first supporter as an example, a first connecting plate is connected with a first spring through a screw rod, and a first motor controls the supporting force of the first connecting plate by controlling the screw rod to rotate.
Please refer to fig. 3, which is a schematic structural diagram of an absorption mechanism according to an embodiment of the present invention, including an absorption unit and a rotation unit for controlling rotation of the absorption unit, where the rotation unit includes a rotator 31 and a fourth motor 32 for controlling rotation speed of the rotator, the absorption unit includes an adsorption unit disposed in an absorption pipe 33, an air suction unit for controlling absorption amount of flue gas, and a filtering unit for filtering flue gas, the adsorption unit includes an adsorption net 35 for adsorbing solid waste and a weight sensor 34 disposed on the adsorption net, where the weight sensor is used to obtain weight of the solid waste on the adsorption net;
specifically, in the embodiment of the present invention, the filter unit 4 in the absorption mechanism of the environment-friendly electronic product spot welding device with the filter unit provided with the smoke absorption loop can be arranged according to the raw material in the electric welding gun, and can absorb the smoke generated by spot welding of the raw material, and a preferred embodiment is provided in the embodiment of the present invention, the filter unit comprises coarse filtration, high-efficiency filtration and an activated carbon layer, the coarse filtration can adsorb relatively large particles in the air flow to avoid premature blockage of the main filter, the high-efficiency filtration is made of HEPA material with a filtration efficiency of 99.99% for 0.3 micron particles, and the activated carbon layer can effectively remove harmful gas in the air flow.
Please refer to fig. 4, which is a schematic structural diagram of a placement mechanism according to an embodiment of the present invention, including a placement plate 53 for placing an electronic product to be spot-welded, and a clamping mechanism for clamping the electronic product to be spot-welded, including a first clamping member 52 and a second clamping member 51.
The control mechanism obtains the deviation distance D of the spot welding position and compares the deviation distance D of the spot welding position with the deviation distance D of the spot welding position preset by the control mechanism, and judges whether the current spot welding position meets the preset standard or not, wherein,
when D is less than or equal to D1, the control mechanism judges that the current spot welding position meets the preset standard;
when D1 is more than D and less than D2, the control mechanism judges that the current electric welding position meets the preset standard, and the control mechanism adjusts the rotation rate of the absorption unit according to the absorption amount obtained by the absorption unit;
when D is larger than or equal to D2, the control mechanism judges that the current spot welding position does not meet the preset standard, and the control mechanism adjusts the supporting force of the supporting unit of the stabilizing mechanism according to the stability degree of the electric welding gun obtained by the detection mechanism;
the control mechanism presets a spot welding position offset distance D, sets a first preset spot welding position offset distance D1 and a second preset spot welding position offset distance D2.
Specifically, the control mechanism of the invention divides the preset spot welding position deviation distance into two definite standards, the control mechanism compares the acquired spot welding position deviation distance with the preset spot welding position deviation distance and judges whether the spot welding position is accurate, wherein when the spot welding position deviation distance acquired by the control mechanism is less than or equal to the first preset spot welding position deviation distance, the current spot welding position is accurate, the spot welding position accords with the preset standard, when the spot welding position deviation distance acquired by the control mechanism is between the first preset spot welding position deviation distance and the second preset spot welding position deviation distance, the current spot welding position is accurate, but has a certain deviation, in order to avoid the deviation from expanding, the control mechanism judges whether the current spot welding operation process is reasonable or not through the adsorption quantity acquired by the adsorption unit, and then adjusts the rotation speed of the adsorption unit, the spot welding position deviation distance that acquires when control mechanism predetermines electric welding position deviation distance as the second, explains that current spot welding position is inaccurate, and the spot welding position is not conform to preset standard, for correcting the spot welding position of electric welding gun, ensures next spot welding position accurate, and control mechanism passes through detection mechanism acquires the stability of electric welding gun is in order to right stabilizing mechanism's supporting element holding power is adjusted.
Specifically, the embodiment of the present invention provides a preferable implementation manner, as long as the obtaining manner of the deviation distance between the spot welding positions is not limited, and only a deviation condition between the actual position of the spot welding and the original position can be obtained, and specifically, an image processing mechanism is disposed above the electronic component to be spot welded, the preset position to be spot welded is stored in the image processing mechanism, after the spot welding machine spot welds the position to be spot welded, the image processing mechanism obtains an image after spot welding, and the difference between the distance from the center point of the preset position and the center point of the position after spot welding is set as the deviation distance between the spot welding positions.
Wherein the control mechanism acquires the deviation distance of the current spot welding position at a first preset spot welding position deviation distance and a second preset spot welding position deviation distance, acquires the adsorption quantity Deltam of the adsorption unit within preset time, compares the acquired adsorption quantity with a preset adsorption quantity M, and judges whether the generation quantity of the current spot welding solid waste meets a preset standard or not, wherein,
when the delta M is less than or equal to M1, the control mechanism judges that the generation amount of the solid waste of the current spot welding meets the preset standard;
when M1 is smaller than Δ M and smaller than M2, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not meet the preset standard, and the control mechanism improves the rotation speed of the absorption unit;
when the delta M is larger than or equal to M2, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not accord with the preset standard, the control mechanism improves the rotation speed of the absorption unit and simultaneously improves the heating temperature of the electric welding gun;
the control mechanism presets an adsorption amount M, sets a first preset adsorption amount M1 and a second preset adsorption amount M2.
Specifically, the control means obtains an adsorption amount between a first preset adsorption amount and a second preset adsorption amount, the control means determines that the amount of solid waste generated by current spot welding does not meet a preset standard, the control means increases the rotation rate p to p1 of the absorption unit, and sets p1= p × (1+ (. DELTA.m-M1) × (M2-. DELTA.m)/(M1. times.M 2)).
Specifically, the control means obtains the suction amount equal to or greater than a second preset suction amount, and increases the rotation rate p to p2 of the suction unit to set p2= p × (1+ (. DELTA.m-M2)/M2), and at the same time increases the heating temperature w to w1 of the electric welding torch to set w1= w × (1+ (. DELTA.m-M2)/M2).
Wherein, the control mechanism of the invention is provided with an adsorption amount, and judges whether the current generated solid waste accords with the preset standard or not by comparing the obtained adsorption amount with the preset adsorption amount, and further judges whether the operation of the current spot welding position is in compliance, wherein, if the control mechanism obtains that the adsorption amount of the current spot welding position is less than or equal to the first preset adsorption amount, the quantity of the solid waste generated in the current spot welding process accords with the preset standard, and further the operation compliance of the current spot welding position is explained, if the control mechanism obtains that the adsorption amount of the current spot welding position is between the first preset adsorption amount and the second preset adsorption amount, the current solid waste generation quantity is more, in order to avoid the inaccurate acquisition of the spot welding position offset distance due to the larger smoke gas quantity in the solid waste generation process, the control mechanism improves the rotation speed of the absorption unit so as to improve the absorption efficiency, if the control mechanism obtains that the adsorption capacity of current spot welding position is more than or equal to the second and predetermines the adsorption capacity, explain that a large amount of solid waste has been produced in the current spot welding process, the reason that causes this condition lies in that the spot welding temperature is low excessively for welding material has produced incomplete combustion, and control mechanism is through improving the slew rate of absorption unit in order to absorb a large amount of flue gas, improves electric welding gun's heating temperature simultaneously, reduces the production of discarded object, the effect of guarantee spot welding.
Specifically, the solid waste generated in the spot welding process in the embodiment of the present invention is not limited as long as it is generated in the spot welding process and can be adsorbed by the adsorption net, and the solid waste includes cooled sparks, particles of molten metal and slag, and the like.
Wherein, the rotating unit comprises a rotator connected with the absorbing unit and a first motor for controlling the rotating speed of the rotator, wherein, the first motor is connected with the rotator, the absorbing unit comprises an absorbing pipe and an air suction pump for controlling the smoke absorbing capacity, the control mechanism presets a rotating speed P, the control mechanism obtains the rotating speed of the absorbing unit and compares the rotating speed with the preset rotating speed to adjust the power parameter of the first motor and the pressure of the air suction pump, wherein,
when pi ≦ P, the control mechanism increases the power parameter F1 of the first motor to F11, setting F11= F1 × (1+ (P-pi)/P);
when pi > P, the control mechanism increases the power parameter F1 of the first motor to F12, setting F12= F1 × (1+ (pi-P)/P), the control mechanism increases the pressure Fx of the suction pump to Fx1, setting Fx1= Fx × (1+ (pi-P)/P);
wherein i =1, 2.
Specifically, the embodiment of the present invention does not limit the rotator as long as it can rotate the absorption unit, and the rotator may be a structure having a rotation capability such as a gear, a turntable, or the like.
The invention is provided with a rotating speed controller which controls the rotating speed of the rotator by adjusting the power parameter of the first motor, and is also provided with an air suction pump which can control the air suction amount to avoid the poor absorption effect caused by the overlarge rotating speed of the absorption unit, wherein the rotating speed of the absorption unit acquired by the control mechanism is less than or equal to the rotating speed, the control mechanism increases the rotating speed by adjusting the power parameter of the first motor, the rotating speed of the absorption unit acquired by the control mechanism is greater than the preset rotating speed, and the pressure of the air suction pump is increased while the rotating speed is increased by adjusting the power parameter of the first motor by the control mechanism, so that the situation that the absorption of smoke and waste is not in accordance with the preset standard caused by the overlarge rotating speed is avoided.
Specifically, the support unit includes a first support in contact with one side of the electric welding gun and a second support in contact with the other side of the electric welding gun, wherein the first support includes a first link plate, a second motor controlling a support force of the first link plate, and a first spring for damping vibration, the second support includes a second link plate, a third motor controlling a support force of the second link plate, and a second spring for damping vibration, the detection mechanism includes a first displacement sensor connected to the first spring, and a second displacement sensor connected to the second spring, the detection mechanism acquires a degree of stability s of the electric welding gun based on a displacement amount s1 of the first spring acquired by the first displacement sensor and a displacement amount s2 of the second spring acquired by the second displacement sensor, sets s = (1+ (s1-s10)/s10) × (1+ (s2-s20)/s20), wherein s10 is a first standard value of the spring displacement preset by the control mechanism, and s20 is a second standard value of the spring displacement preset by the control mechanism.
Wherein the control mechanism obtains the deviation distance of the spot welding position which is more than or equal to the second preset deviation distance of the spot welding position, the control mechanism compares the stability degree S of the current electric welding gun obtained by the detection mechanism with the preset stability degree S0 of the control mechanism to judge whether the current electric welding gun is stable, wherein,
when S < S0, the control mechanism determines that the electric welding gun is stable, the control mechanism adjusts the positioning of the electric welding gun, and simultaneously increases the absorbing pump pressure Fx ' to Fx1 ', and sets Fx1 ' = Fx x (1+ (S0-S)/S0);
and when S is larger than or equal to S0, the control mechanism judges that the welding gun is unstable currently, and the control mechanism judges to adjust the supporting force of the supporting unit according to the displacement of the first spring and the displacement of the second spring.
Specifically, the invention provides a detection mechanism connected with a supporting unit, the detection mechanism acquires the displacement of a first supporter and the displacement of a second supporter respectively and is different from the displacement standard value, the stability of the electric welding gun is comprehensively acquired, the stability of the electric welding gun is acquired according to the displacement of the electric welding gun acquired by the detection mechanism, a control mechanism compares the acquired stability of the electric welding gun with a preset stability, and whether the current spot welding process of the electric welding gun is stable is judged, wherein the control mechanism acquires that the stability of the current electric welding gun is less than the preset stability, which indicates that the current electric welding gun is stable in spot welding, and causes the deviation distance of the spot welding position to exceed the second preset stability because the positioning of the spot welding operation of the electric welding gun is inaccurate, and the control mechanism judges that the positioning of the electric welding gun is adjusted, and simultaneously the pressure of an absorption pump is increased, the inaccuracy of obtaining because of too big influence spot welding position skew distance of flue gas volume is avoided, and control mechanism obtains current electric welding gun stability degree more than or equal to and predetermines the stability, and control mechanism judges current electric welding gun spot welding unstability, and control mechanism judges according to the displacement volume of first spring and the displacement volume of second spring to adjust the holding power to the support element to make electric welding gun's stability degree accord with preset standard.
Wherein the control mechanism determines that the electric welding gun is currently unstable, acquires a difference Δ S between a displacement amount S1 of the first spring and a displacement amount S2 of the second spring, sets Δ S = S1-S2, and compares the difference with a preset difference Δ S to adjust the supporting force of the supporting unit, wherein,
when Δ S is less than or equal to Δ S1, the control mechanism increases the third motor power parameters F3 to F31, sets F31= F3 × (1+0.8 × (Δs1- Δ S)/. DELTA.s 1), decreases the second motor power parameters F2 to F21, sets F21= F2 × (1-0.8 × (. DELTA.s 1- Δ S)/. DELTA.s 1);
when Δ S1 is smaller than Δ S and smaller than Δ S2, the control mechanism increases the third motor power parameters F3 to F32, sets F32= F3 × (1+0.5 × (Δs- Δ S1) × (Δs2- Δ S)/(Δs1 × Δ S2)), and the control mechanism increases the second motor power parameters F2 to F22, and sets F22= F2 × (1+0.5 × (Δs- Δ S1) × (Δs2- Δ S)/(Δs1 × Δ S2));
when Δ S ≧ Δ S2, the control mechanism increases the second motor power parameters F2 to F23, sets F23= F2 × (1-0.8 × (. DELTA.s- Δ S2)/. DELTA.s 2), lowers the third motor power parameters F3 to F32, and sets F32= F3 × (1-0.8 × (. DELTA.s- Δ S2)/. DELTA.s 2);
the control mechanism presets a difference value deltaS, sets a first preset difference value deltaS 1 and a second preset difference value deltaS 2.
Specifically, the control mechanism of the invention judges that the current electric welding gun is unstable, the control mechanism obtains the difference value between the first spring displacement and the second spring displacement and compares the difference value with a preset value, and adjusts the power parameters of the second motor and the third motor to control the stability degree of the electric welding gun, wherein, when the obtained difference value is less than or equal to a first preset difference value, the deviation of the current electric welding gun towards the direction of the second support is indicated, the control mechanism improves the supporting force of the second support by adjusting the power parameter of the third motor, and simultaneously adjusts the power parameter of the second motor to reduce the supporting force of the first support, when the obtained difference value is between the first preset difference value and a second preset difference value, the control mechanism ensures the stability of the electric welding gun by simultaneously improving the supporting force of the first support and the second support, when the obtained difference value is greater than or equal to the second preset difference value, the deviation of the current electric welding gun towards the first support is indicated, the control mechanism adjusts the power parameter of the third motor to reduce the supporting force of the second support, and adjusts the power parameter of the second motor to improve the supporting force of the first support, so that the stability of the electric welding gun is guaranteed.
Referring to fig. 5, a schematic diagram of a spot welding method for an environment-friendly electronic product according to an embodiment of the invention includes,
step S1, placing the electronic product to be spot-welded on a placing table, and clamping the electronic product to be spot-welded by a clamping mechanism;
step S2, the electric welding gun performs spot welding on the position to be spot welded;
step S3, the control means adjusts the supporting force of the stabilizing means and the rotational speed of the absorbing means according to the spot welding position deviation distance;
and step S4, the absorption mechanism absorbs the solid waste and the smoke around the spot welding according to the acquired rotation rate of the absorption unit and the pressure of the suction pump.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can be within the protection scope of the invention.
Claims (10)
1. The utility model provides an environmental protection formula electronic product spot welding device with flue gas absorption return circuit which characterized in that includes:
the electric welding gun is used for spot welding of electronic products;
the stabilizing mechanism is connected with the electric welding gun and used for maintaining the stability of the electric welding gun, wherein the stabilizing mechanism comprises a first sliding unit and a supporting unit;
the absorption mechanism is connected with the electric welding gun and used for absorbing smoke of welding spots, the absorption mechanism comprises an absorption unit and a rotating unit for controlling the absorption unit to rotate, the absorption unit comprises an adsorption unit arranged in an absorption pipe, an air suction unit for controlling the absorption amount of the smoke and a filtering unit for filtering the smoke, the adsorption unit comprises an adsorption net for adsorbing solid wastes and a weight sensor arranged on the adsorption net, and the weight sensor is used for acquiring the weight of the solid wastes on the adsorption net;
the detection mechanism is connected with the supporting unit and used for acquiring the stability of the electric welding gun;
the control mechanism is connected with the electric welding gun, the stabilizing mechanism, the absorbing mechanism and the detecting mechanism and used for adjusting the supporting force of the stabilizing mechanism and the rotating speed of the absorbing unit according to the spot welding position deviation distance, wherein the spot welding position deviation distance obtained by the control mechanism is larger than a preset value, the control mechanism judges and adjusts the supporting force of the supporting unit so that the spot welding position meets a preset standard, the control mechanism obtains the stability degree of the current electric welding gun according to the detecting mechanism and adjusts the supporting force of the supporting unit according to the stability degree of the current electric welding gun, and simultaneously the control mechanism controls the rotating rate of the rotating unit so as to adjust the absorbing unit according to the absorption amount obtained by the absorbing unit so that the spot welding of an electronic product meets the preset standard.
2. The spot welding device of claim 1, wherein the control mechanism compares the deviation distance D of the spot welding position with the deviation distance D of the spot welding position preset by the control mechanism to determine whether the current spot welding position meets the preset standard, wherein,
when D is less than or equal to D1, the control mechanism judges that the current spot welding position meets the preset standard;
when D1 is more than D and less than D2, the control mechanism judges that the current electric welding position meets the preset standard, and the control mechanism adjusts the rotation rate of the absorption unit according to the absorption amount obtained by the absorption unit;
when D is larger than or equal to D2, the control mechanism judges that the current spot welding position does not meet the preset standard, and the control mechanism adjusts the supporting force of the supporting unit of the stabilizing mechanism according to the stability degree of the electric welding gun obtained by the detection mechanism;
the control mechanism presets a spot welding position offset distance D, sets a first preset spot welding position offset distance D1 and a second preset spot welding position offset distance D2.
3. The spot welding device of claim 2, wherein the control means obtains the deviation distance of the current spot welding position between the first preset spot welding position deviation distance and the second preset spot welding position deviation distance, obtains the absorption quantity Δ M of the absorption unit within a preset time, compares the obtained absorption quantity with the preset absorption quantity M, and determines whether the current spot welding solid waste generation quantity meets the preset standard, wherein,
when the delta M is less than or equal to M1, the control mechanism judges that the generation amount of the solid waste of the current spot welding meets the preset standard;
when M1 is smaller than Δ M and smaller than M2, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not meet the preset standard, and the control mechanism improves the rotation speed of the absorption unit;
when the delta M is larger than or equal to M2, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not accord with the preset standard, the control mechanism improves the rotation speed of the absorption unit and simultaneously improves the heating temperature of the electric welding gun;
the control mechanism presets an adsorption amount M, and sets a first preset adsorption amount M1 and a second preset adsorption amount M2.
4. The spot welding device for the environmental protection type electronic products with the smoke absorption loop as claimed in claim 3, wherein the control mechanism obtains the adsorption amount between a first preset adsorption amount and a second preset adsorption amount, the control mechanism judges that the generation amount of the solid waste of the current spot welding does not meet a preset standard, the control mechanism increases the rotation speed p to p1 of the absorption unit, and the setting is p1= p x (1+ (. DELTA.m-M1) x (M2-DELTA.m)/(M1 xM 2)).
5. The environment-friendly electronic product spot welding device with the smoke absorption circuit as claimed in claim 4, wherein the control mechanism obtains the absorption amount which is equal to or larger than a second preset absorption amount, the control mechanism increases the rotation speed p to p2 of the absorption unit, sets p2= p x (1+ (. DELTA.m-M2)/M2), and simultaneously increases the heating temperature w to w1 of the electric welding gun, sets w1= w x (1+ (. DELTA.m-M2)/M2).
6. The spot welding device for environmental protection electronic products with a smoke absorption loop according to claim 5, wherein the rotating unit comprises a rotator connected with the absorption unit and a first motor for controlling the rotation speed of the rotator, wherein the first motor is connected with the rotator, the absorption unit comprises an absorption tube and a suction pump for controlling the smoke absorption amount, the control mechanism presets a rotation speed P, the control mechanism obtains the rotation speed of the absorption unit and compares the rotation speed with the preset rotation speed to adjust the power parameter of the first motor and the pressure of the suction pump, wherein,
when pi is less than or equal to P, the control mechanism increases the power parameter F1 of the first motor to F11;
when pi is larger than P, the control mechanism increases the power parameter F1 of the first motor to F12, and the control mechanism increases the pressure Fx of the suction pump to Fx 1;
wherein i =1, 2.
7. The spot welding apparatus for electronic products with environmental protection provided with a smoke absorption circuit according to claim 2, wherein said supporting unit comprises a first supporter contacting one side of said electric welding gun and a second supporter contacting the other side of said electric welding gun, wherein said first supporter comprises a first connecting plate, a second motor controlling a supporting force of said first connecting plate and a first spring for damping vibration, said second supporter comprises a second connecting plate, a third motor controlling a supporting force of said second connecting plate and a second spring for damping vibration, said detecting mechanism comprises a first displacement sensor connected to said first spring and a second displacement sensor connected to said second spring, said detecting mechanism is based on a displacement s1 of said first spring obtained by said first displacement sensor and a displacement s2 of said second spring obtained by said second displacement sensor, and acquiring the stability degree s of the electric welding gun, and setting s = (1+ (s1-s10)/s10) × (1+ (s2-s20)/s20), wherein s10 is a first spring displacement standard value preset by the control mechanism, and s20 is a second spring displacement standard value preset by the control mechanism.
8. The spot welding device for environmental protection electronic products with a smoke absorption loop according to claim 7, wherein the control mechanism obtains the spot welding position deviation distance greater than or equal to a second preset spot welding position deviation distance, and the control mechanism determines whether the current electric welding gun is stable according to the stability S of the current electric welding gun obtained by the detection mechanism compared with the preset stability S0 of the control mechanism, wherein,
when S is less than S0, the control mechanism judges that the current electric welding gun is stable, adjusts the positioning of the electric welding gun and simultaneously increases the pressure Fx 'of the absorption pump to Fx 1';
and when S is larger than or equal to S0, the control mechanism judges that the current electric welding gun is unstable, and the control mechanism judges to adjust the supporting force of the supporting unit according to the displacement of the first spring and the displacement of the second spring.
9. The spot welding apparatus for electronic products with environmental protection provided with a smoke absorption circuit according to claim 8, wherein said control means determines that the welding torch is currently unstable, obtains a difference Δ S between a displacement amount S1 of the first spring and a displacement amount S2 of the second spring, sets Δ S = S1-S2, and compares the difference with a preset difference Δ S to adjust the supporting force of said supporting unit, wherein,
when the delta S is less than or equal to delta S1, the control mechanism increases the power parameters F3 to F31 of the third motor, and decreases the power parameters F2 to F21 of the second motor;
when the power parameter of the third motor is increased from F3 to F32 by the control mechanism and the power parameter of the second motor is increased from F2 to F22 by the control mechanism when the power parameter of the third motor is increased from S1 to S2;
when the delta S is not less than or equal to the delta S2, the control mechanism improves the power parameters F2 to F23 of the second motor, and reduces the power parameters F3 to F32 of the third motor;
the control mechanism presets a difference value deltaS, sets a first preset difference value deltaS 1 and a second preset difference value deltaS 2.
10. A spot welding method of an environment-friendly electronic product, which uses the spot welding apparatus according to any one of claims 1 to 9, comprising,
step S1, placing the electronic product to be spot-welded on a placing table, and clamping the electronic product to be spot-welded by a clamping mechanism;
step S2, the electric welding gun performs spot welding on the position to be spot welded;
step S3, the control means adjusts the supporting force of the stabilizing means and the rotational speed of the absorbing means according to the spot welding position deviation distance;
and step S4, the absorption mechanism absorbs the solid waste and the smoke around the spot welding according to the acquired rotation rate of the absorption unit and the pressure of the suction pump.
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