CN203918247U - A kind of multi-functional nail mash welder of planting - Google Patents
A kind of multi-functional nail mash welder of planting Download PDFInfo
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- CN203918247U CN203918247U CN201420165210.1U CN201420165210U CN203918247U CN 203918247 U CN203918247 U CN 203918247U CN 201420165210 U CN201420165210 U CN 201420165210U CN 203918247 U CN203918247 U CN 203918247U
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- 238000003466 welding Methods 0.000 claims abstract description 131
- 239000003990 capacitor Substances 0.000 claims abstract description 51
- 238000007599 discharging Methods 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 40
- 229910052742 iron Inorganic materials 0.000 abstract description 20
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 13
- 239000004411 aluminium Substances 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000010009 beating Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000010409 ironing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Resistance Welding (AREA)
Abstract
The utility model discloses a kind of multi-functional nail mash welder of planting, comprise main circuit and control module, main circuit part comprises electric capacity output type loop and transformer output type loop, electric capacity output type loop comprises the mains electricity input end connecting successively, capacitor charging transformer, rectification module, charge switch, electrolytic capacitor, discharge switch, the first coil and welding gun, transformer output type loop comprises the mains electricity input end connecting successively, power model, main transformer and welding gun, wherein, primary coil of main transformer is the second coil that connects power model, the secondary coil of main transformer is the first coil.The multi-functional nail mash welder of planting of the present utility model possesses two kinds of discharge modes, can realize the functions such as welding iron meson, aluminium nail, carbon-point heating, a tractor serves several purposes, realizing iron car aluminium car all can repair, and it is high to be welded into power, hot-zone impact is little, requires low to electrical network, can adopt light cable, user-friendly.
Description
Technical Field
The utility model relates to an automobile maintenance equipment field, concretely relates to multi-functional nail spot welder that plants.
Background
The most common of the existing welding machines for repairing the metal plates of the car body are about two types, one type is a resistance type spot welding machine, and the other type is a capacitance type nail implanting machine, and the welding machines respectively have respective welding principles and performances and are respectively suitable for different application fields. See the following table for a comparison of the performance of the two welders:
fig. 1 is a schematic circuit diagram of a conventional resistance spot welder, and referring to fig. 1, a main circuit of the conventional resistance spot welder includes a mains supply input terminal, a power module, a main transformer, and a welding gun output terminal, and a control module is connected to the power module for setting welding parameters such as welding current and welding time and giving a power output trigger instruction. The traditional resistance spot welding machine has the advantages of controllable welding current and time, continuous heating and general heating for welding iron mesons and carbon rods. However, the conventional resistance spot welding machine also has the following defects: a) the resistance spot welding machine uses a small output current and a relatively long welding time compared with a capacitance type nail planting machine to exchange heat energy required by welding, but if welding materials with extremely low impedance such as aluminum nails and the like are encountered, the instantly output energy is not enough to ensure thatThe welding of the aluminum nail generates melting, and only continuous heating is performed, so that the situation that the aluminum nail cannot be welded is caused; b) because the welding current output to the maximum of the resistance type spot welding machine is small, the required welding time is long, the heat affected area of a welding spot is large, the anti-rust layer of a metal plate is easy to damage, the welding spot is easy to rust, the temperature behind the metal plate is high due to long welding time, soundproof cotton is used behind the metal plate of some advanced vehicle types, and the danger of igniting soundproof materials due to overhigh temperature is caused; c) the resistance spot welder has the advantages that the input current is large at the working moment, the requirement on a user power grid is high, voltage drop is easy to generate during welding, the power consumption of a user is influenced, and a 110V single-phase power supply cannot be used for welding basically due to the large required power; d) the resistance spot welder has long current output time and high requirement on output cables, and the general use specification is 70mm2The cable is heavy and difficult to carry, and the length of the cable is generalIs not limited toMore than 2 meters, the use is inconvenient.
Fig. 2 is a schematic circuit diagram of a capacitive nailing machine, and referring to fig. 2, a main circuit of the capacitive nailing machine comprises a mains supply input end, a charging transformer, a rectifying module, a charging switch tube, an electrolytic capacitor, a discharging switch tube and a welding gun output end, and a control module is respectively connected with the charging switch tube, the electrolytic capacitor and the discharging switch tube and used for detecting a set charging voltage and controlling the charging and discharging of the switch tube. The capacitive nail-planting machine adopts a large-capacity capacitor for storage after the commercial power is rectified, and releases the capacitor when in use so as to obtain instantaneous large current, and is generally used for welding aluminum nails with high requirements on instantaneous output. However, the capacitive nail-implanting machine adopts a capacitive energy storage discharge mode to perform welding, the welding time is uncontrollable, although the instantly output current is large, the dI/dt (current change rate) is too high, so that the solid/liquid conversion time of a welding spot is too short during welding, and sometimes the situation that solid metal is directly gasified in the conversion process to cause welding failure occurs; moreover, the welding causes a serious noise, spark, and spatter due to an excessively high dI/dt (current change rate). The capacitive nail-planting machine has low success rate of welding the iron medium, has low welding strength, and cannot knock a drawing hammer even if the iron medium is welded, so the capacitive nail-planting machine cannot weld the iron medium basically. Because the recharging of electrolytic capacitor needs to be carried out after the nail machine is planted to capacitanc discharges, so can't carry out the output of continuation, just also can't use the carbon-point continuous heating, the carbon-point heating is one of the important process when car panel beating is repaired, after panel beating welded meson or nail, can use the puller to draw, use the carbon-point to heat drawing the region simultaneously, can improve the effect of drawing, this function is particularly important to aluminium automobile body panel beating repair, but capacitanc plants the nail machine and hinders the function can't be realized, the user only has to prepare a spot welder in addition and does the carbon-point heating, the carbon-point heating also can carry out regional heating to the panel beating of unevenness after with the extremely fast cooling of wet cloth, utilize the principle of expend with heat and contract with cold to repair the panel beating.
The power supply device for stud welding machine (patent number: 201010120500.0) of the Chinese utility model patent previously applied by the applicant solves the problem that the capacitance type nail-planting machine can not weld the iron because of the over-high current change rate. Through increasing the second transformer before the welder output of capacitanc nail machine of planting, the electric current of releasing in the twinkling of an eye from the electric capacity passes through the second transformer vary voltage adjustment back, reduces dI/dt (current rate of change), and extension current release time makes it satisfy the welding requirement of indisputable meson, compares resistance-type spot welder moreover, and the hot zone influence is little when adopting the device to carry out indisputable meson welding, and the effect is better. However, the device still has the problem of capacitor charging time, can not continuously heat and can not heat the carbon rod, and the second transformer has power loss during voltage transformation adjustment, so that the device does not meet the requirements of energy conservation and environmental protection.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a collect welding iron meson, welding aluminium nail and carbon-point heating function in multi-functional planting nail spot welder of an organic whole.
The utility model provides a technical scheme that its technical problem adopted is:
a multifunctional spot welder for planting nails comprises a main circuit and a control module, wherein the main circuit comprises a capacitor output circuit and a transformer output circuit:
the capacitor output type loop comprises a mains supply input end, a capacitor charging transformer, a rectifier module, a charging switch, an electrolytic capacitor, a discharging switch, a first coil and a welding gun which are sequentially connected, wherein a ground wire I is led out of the electrolytic capacitor and forms the output end of the capacitor output type loop with the welding gun, and the first coil is connected in series between the discharging switch and the output end to serve as a reactor in the capacitor output type loop;
the transformer output type loop comprises a mains supply input end, a power module, a main transformer and a welding gun which are sequentially connected, wherein a ground wire II is led out of the main transformer and forms the output end of the transformer output type loop together with the welding gun; wherein,
the primary coil of the main transformer is a second coil connected with the power module, and the secondary coil of the main transformer is a first coil.
The utility model discloses a multi-functional nail spot welder that plants possesses two kinds of discharge modes, provides different welding performance and effect respectively. Mode one-capacitive discharge: the welding gun and the ground wire I are used as output ends, the first coil is used as a reactor, and due to the addition of the reactor, when the capacitive nail planting machine or the welding meson is used, the output current dI/dt (current change rate) is effectively reduced, the sound, spark and splash generated during welding are reduced, the welding time is prolonged, the sufficient solid-liquid state conversion time is given to welding metal, the welding success rate is improved, and the problem that the traditional capacitive nail planting machine cannot weld the meson is solved; mode two-main transformer discharge: the first coil and the second coil are combined to be used as a main transformer of a resistance type output loop, the welding gun and the ground wire II are used as output ends, output power and welding time can be regulated and controlled through the control module, continuous discharge is carried out, and the defect that a traditional capacitance type nail planting machine cannot heat a carbon rod is overcome.
As a further improvement of the above technical solution, the control module is respectively connected to the charging switch, the electrolytic capacitor, the discharging switch and the power module, and is configured to control the switch to perform charging and discharging, detect and set a charging voltage of the capacitor, trigger the operation of the transformer output circuit, and set an operating parameter of the transformer output circuit.
Further, when the transformer output type loop works, the control module closes the discharging switch to stop discharging the electrolytic capacitor.
Further, when the capacitor output type loop is in a working discharge state, the control module prohibits triggering the transformer output type loop to work.
Further, when the charging voltage of the electrolytic capacitor does not reach the preset value, the control module closes the discharging switch to prohibit the electrolytic capacitor from discharging.
As a further improvement of the technical scheme, the welding gun is provided with a plurality of replaceable welding tool heads, the welding gun has different functions by replacing the welding tool heads, and the operation is convenient. Still further, the welding tool head includes a head for implanting nails and installing carbon rods.
The utility model has the advantages that: above-mentioned multi-functional nail spot welder that plants has following advantage:
1. the iron meson, the aluminum nail and the carbon rod can be welded and heated, and the iron car and the aluminum car can be repaired by one machine;
2. the multifunctional nail-planting spot welding machine of the utility model is adopted to carry out capacitive welding of iron mesons, the success rate is high, the welding time is far shorter than that of the traditional resistance-type spot welding, the heat affected zone is extremely small, and the influence on the base metal is little;
3. when the capacitive discharge welding iron medium is used, because the energy required by welding is input discontinuously and directly in the capacitive energy storage mode, the input current is far lower than that of a traditional resistance-type spot welder, the requirement on a user power grid is extremely low, no voltage drop is generated during use, and a 110V single-phase power supply can be used for welding;
4. compared with the traditional spot welding machine, the capacitive welding machine has extremely short welding time, thereby improving the utilization rate of the output cable, reducing the square number of the output cable or increasing the length of the cable and ensuring that a user is more convenient;
5. when the discharge mode of the main transformer is switched, the continuous output can be carried out on the metal plate, and the function which cannot be realized by capacitive discharge such as carbon rod heating, pulse seam welding, electric ironing leveling and the like can be realized;
6. the first coil is used as a reactor and a part of a main transformer, and the machine volume and the manufacturing cost are reduced due to the double-purpose.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a circuit schematic of a resistance spot welder;
FIG. 2 is a schematic circuit diagram of a capacitive nailer;
FIG. 3 is a schematic circuit diagram of the multifunctional spot welding machine for planting nails of the present invention;
fig. 4 is a comparison diagram of the spot welding effect of the multifunctional nail-planting spot welding machine (a) and the resistance spot welding machine (b).
Detailed Description
Referring to fig. 3, the present invention provides a preferred embodiment, a multifunctional spot welding machine for nail implantation, which comprises a main circuit and a control module 15, wherein the main circuit comprises a capacitor output circuit 101 and a transformer output circuit 102.
The capacitor output type loop 101 is composed of a mains supply input end 1, a capacitor charging transformer 2, a rectifier module 3, a charging switch 4, an electrolytic capacitor 5, a discharging switch 6, a first coil 7 and a welding gun 8 which are sequentially connected, an earth wire I9 is led out of the electrolytic capacitor 5 and forms an output end of the capacitor output type loop 101 with the welding gun 8, and the first coil 7 is connected in series between the discharging switch 6 and the output end to serve as a reactor in the capacitor output type loop 101.
The transformer output type loop 102 comprises a mains supply input end 1, a power module 10, a main transformer and a welding gun 8 which are sequentially connected, wherein a primary coil of the main transformer 12 is a second coil 11 connected with the power module 10, a secondary coil of the main transformer 12 is a first coil 7, and a ground wire II 13 led out of the main transformer 12 and the welding gun 8 form an output end of the transformer output type loop 102.
The control module 15 is respectively connected with the charging switch 4, the electrolytic capacitor 5, the discharging switch 6 and the power module 10. When the transformer output type loop 102 works, the control module 15 triggers the working output of the transformer output type loop 102 and sets working parameters of the transformer output type loop 102, such as welding current, welding time and the like, through adjusting the power module 10; at the same time, the control module 15 closes the discharge switch 6, stopping discharging the electrolytic capacitor 5. When the capacitor output type loop 101 works, the control module 15 can detect the charging voltage of the electrolytic capacitor 5 and compare the charging voltage with a preset voltage value to judge whether the electrolytic capacitor 5 is charged completely, if the electrolytic capacitor 5 is not charged completely (the voltage at two ends of the electrolytic capacitor 5 does not reach the preset value), the charging switch 4 is turned on and the discharging switch 6 is turned off to charge the electrolytic capacitor 5, and discharging is forbidden under the condition that charging is not completed until the electrolytic capacitor 5 is charged completely (the voltage reaches the preset value), the electrolytic capacitor 5 enters a standby state after charging is completed, at this time, the discharging switch 6 can be turned on by the control module 15 to discharge, and when the electrolytic capacitor 5 is in a discharging state, the control module 15 forbids triggering of the work of the transformer output type loop 102.
Further, welder 8 can be provided with a plurality of removable welding frock heads, makes welder 8 have different functions through changing the welding frock head, and convenient operation, and further, the welding frock head is including the heating head that is used for planting the head of nailing and installation carbon-point of nail, and specific example can refer to patent "multi-functional plastics repair machine" and "the removable rifle head of a multi-functional electric welding rifle" that earlier applied for.
The utility model discloses a multi-functional nail spot welder that plants possesses two kinds of discharge modes, provides different welding performance and effect respectively. Mode one-capacitive discharge: the welding gun 8 and the ground wire I9 are used as output ends, the first coil 7 is used as a reactor, and due to the addition of the reactor, when the capacitive nail-planting machine or the welding meson is used, the output current dI/dt (current change rate) is effectively reduced, the sound, spark and splash generated during welding are reduced, the welding time is prolonged, the sufficient solid-liquid state conversion time is given to welding metal, the welding success rate is improved, and the problem that the traditional capacitive nail-planting machine cannot weld the meson is solved; mode two-main transformer discharge: the first coil 7 and the second coil 11 are used in combination as a main transformer 12 of a resistance type output loop 102, the welding gun 8 and the ground wire II 13 are used as output ends, output power and welding time can be regulated and controlled through the control module 15, continuous discharge can be carried out, and the defect that a traditional capacitance type nail planting machine cannot heat a carbon rod is overcome.
Compared with the traditional resistance-type spot welder and the capacitive type nail planting machine, the utility model discloses a multi-functional nail planting spot welder has following advantage:
1. the device has two discharge modes, can weld the iron medium, the aluminum nail and the carbon rod for heating, can realize that both the iron car and the aluminum car can be repaired by one machine, and needs two machines for realizing the functions in the prior art, wherein one resistance-type spot welding machine is responsible for welding the iron medium and heating the carbon rod, and one capacitance-type nail implanting machine is responsible for welding the aluminum nail;
2. referring to fig. 4, the left side (a) is the front and back schematic diagram of the iron medium welded by the multifunctional nail-planting spot welding machine of the present invention, and the right side (b) is the front and back schematic diagram of the iron medium welded by the traditional resistance spot welding machine. Because the heating time is long when the traditional resistance spot welding machine is used for welding iron mesons, and a heat affected zone is large, scorching traces appear before and after the parent metal, and an anti-rust layer of a metal plate is damaged; the multifunctional spot welding machine for planting nails of the utility model is adopted to carry out capacitive welding of iron mesons, the success rate is high, the welding time is far shorter than that of the traditional resistance type spot welding, the heat affected zone is extremely small, the parent metal is smooth and has no trace, the sheet metal antirust layer is not damaged, and the spot welding can be called as traceless and rustless spot welding;
3. when the capacitive discharge welding iron medium is used, because the energy required by welding is input discontinuously and directly in the capacitive energy storage mode, the input current is far lower than that of a traditional resistance-type spot welder, the requirement on a user power grid is extremely low, no voltage drop is generated during use, and a 110V single-phase power supply can be used for welding;
4. compared with the traditional spot welding machine, the capacitive welding has extremely short welding time, thereby improving the utilization rate of the output cable, reducing the square number of the output cable or increasing the length of the cable, and reducing the specification of the cable to 25mm2The cable is lighter and more convenient, and the length of the cable can be extended to 4 meters or more, so that the convenience is brought to users;
5. when the discharge mode of the main transformer is switched, the continuous output can be carried out on the metal plate, and the function which cannot be realized by capacitive discharge such as carbon rod heating, pulse seam welding, electric ironing leveling and the like can be realized;
6. the first coil 7 serves as a reactor and a part of the main transformer 12, and is double-purpose, so that the volume of the machine is reduced, and the manufacturing cost is reduced.
The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides a multi-functional spot welder of planting nail which characterized in that, the welding machine includes main circuit and control module, and main circuit part includes electric capacity output formula return circuit and transformer output formula return circuit:
the capacitor output type loop comprises a mains supply input end, a capacitor charging transformer, a rectifier module, a charging switch, an electrolytic capacitor, a discharging switch, a first coil and a welding gun which are sequentially connected, wherein a ground wire I is led out of the electrolytic capacitor and forms the output end of the capacitor output type loop with the welding gun, and the first coil is connected in series between the discharging switch and the output end to serve as a reactor in the capacitor output type loop;
the transformer output type loop comprises a mains supply input end, a power module, a main transformer and a welding gun which are sequentially connected, wherein a ground wire II is led out of the main transformer and forms the output end of the transformer output type loop together with the welding gun; wherein,
the primary coil of the main transformer is a second coil connected with the power module, and the secondary coil of the main transformer is a first coil.
2. The multifunctional spot welding machine for planted nails according to claim 1, wherein: the control module is respectively connected with the charging switch, the electrolytic capacitor, the discharging switch and the power module and is used for controlling the switch to charge and discharge, detecting and setting the charging voltage of the capacitor, triggering the work of the output loop of the transformer and setting the working parameters of the output loop of the transformer.
3. The multifunctional spot welding machine for implanted nails according to claim 2, characterized in that: when the transformer output type loop works, the control module closes the discharge switch to stop discharging the electrolytic capacitor.
4. The multifunctional spot welding machine for planted nails according to claim 3, wherein: and when the capacitor output type loop is in a working discharge state, the control module prohibits triggering the transformer output type loop to work.
5. The multifunctional spot welding machine for implanted nails as claimed in claim 4, wherein: and when the charging voltage of the electrolytic capacitor does not reach the preset value, the control module closes the discharging switch to forbid the electrolytic capacitor from discharging.
6. The multifunctional spot welding machine for planted nails according to claim 1, wherein: the welding gun is provided with a plurality of replaceable welding tool heads.
7. The multifunctional spot welding machine for implanted nails according to claim 6, wherein: the welding tool head comprises a chuck for implanting nails and installing carbon rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165210.1U CN203918247U (en) | 2014-04-04 | 2014-04-04 | A kind of multi-functional nail mash welder of planting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420165210.1U CN203918247U (en) | 2014-04-04 | 2014-04-04 | A kind of multi-functional nail mash welder of planting |
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| Publication Number | Publication Date |
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| CN203918247U true CN203918247U (en) | 2014-11-05 |
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| CN201420165210.1U Expired - Lifetime CN203918247U (en) | 2014-04-04 | 2014-04-04 | A kind of multi-functional nail mash welder of planting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949785A (en) * | 2014-04-04 | 2014-07-30 | 江门市保值久机电有限公司 | Multifunctional stud point welding machine |
| CN105057868A (en) * | 2015-08-10 | 2015-11-18 | 江门市保值久机电有限公司 | Handheld active control type spot welder for planting nails |
-
2014
- 2014-04-04 CN CN201420165210.1U patent/CN203918247U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949785A (en) * | 2014-04-04 | 2014-07-30 | 江门市保值久机电有限公司 | Multifunctional stud point welding machine |
| CN103949785B (en) * | 2014-04-04 | 2016-02-10 | 江门市保值久机电有限公司 | One is multi-functional plants nail mash welder |
| CN105057868A (en) * | 2015-08-10 | 2015-11-18 | 江门市保值久机电有限公司 | Handheld active control type spot welder for planting nails |
| CN105057868B (en) * | 2015-08-10 | 2017-10-10 | 江门市保值久机电有限公司 | A kind of hand-held active control type plants nail mash welder |
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