CN111906423B - DC arc welding machine - Google Patents
DC arc welding machine Download PDFInfo
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- CN111906423B CN111906423B CN202010779136.2A CN202010779136A CN111906423B CN 111906423 B CN111906423 B CN 111906423B CN 202010779136 A CN202010779136 A CN 202010779136A CN 111906423 B CN111906423 B CN 111906423B
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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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/321—Protecting means
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- Mechanical Engineering (AREA)
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- Optics & Photonics (AREA)
- Arc Welding Control (AREA)
Abstract
The invention discloses a direct current arc welding machine which comprises a shell, wherein a control panel is arranged on the front surface of the shell, a heat dissipation window is arranged on the front surface of the shell and close to the lower end of the control panel, a port protection device is fixedly arranged on the front surface of the shell and close to the lower end of the heat dissipation window, a heat dissipation fan is arranged at the middle position of the rear surface of the shell, a cooling plate is fixedly arranged at the bottom end inside the shell, a first rectifier is arranged at one end of the upper surface of the cooling plate, and an IGBT transistor is arranged on one side of the upper surface of the cooling plate and close to the first rectifier. The direct current output port is provided with the port protection device, the telescopic rod is used for telescopic movement of the direct current output port, the cover plate is used for isolating air, dust and moisture in the air are prevented from entering the direct current output port, the drying device arranged on the cover plate can dry the air in the cavity, and the direct current output port can be protected in an environment with high air humidity.
Description
Technical Field
The invention relates to the technical field of arc welding machines, in particular to a direct-current arc welding machine.
Background
The inverter type direct current arc welding machine is a common welding device and has the working principle that: the three-phase power frequency (50Hz) AC network voltage is firstly rectified and filtered by an input rectifier to become DC, then the rectified DC is inverted into intermediate frequency AC voltage of several kHz to several dozen kHz by the alternate switching action of a high-power switch electronic element (a thyristor SCR, a transistor GTR, a field effect transistor MOSFET or an IGBT), and is reduced to dozens of volts suitable for welding by a transformer, and then is rectified again and outputs quite stable DC welding current by reactance filtering (if the AC after inversion voltage reduction is directly used for welding, because the frequency is high, the inductance is large, the active power in a welding loop is greatly reduced, therefore, the AC needs to be rectified again), and the conversion sequence can be simply expressed as: industrial frequency alternating current (rectified and filtered) → direct current (inverted) → intermediate frequency alternating current (step-down, rectified and filtered) → direct current, if symbolized, this is: AC → DC → AC → DC.
In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: 1. when the welding machine is idle, the direct current output lead is generally rolled additionally, so that the direct current output port is directly exposed (the direct current output port is generally made of red copper or brass), the brass port is easy to rust after being placed for a long time in an environment with high air humidity, most direct current output ports are butted with direct current plugs of electrode holders and grounding pliers through internal threads, if the direct current output ports are seriously corroded, the electric conductivity of the direct current output ports and the normal use of the welding machine are influenced, and a common dust cover cannot effectively isolate moisture; 2. direct current arc welding machine current is great in the use, and electronic component can produce more heat, if these heats are not in time discharged, can cause the inside high temperature of arc welding machine, influences arc welding machine's normal work, among the prior art, dispel the heat through installation fan-fan cooperation heat dissipation window usually, nevertheless in high temperature weather, it is relatively poor only to carry out radiating effect through radiator fan, can not be fine dispel the heat, and then influence arc welding machine's safe work.
To this end, a dc arc welder is proposed.
Disclosure of Invention
The invention aims to provide a direct current arc welding machine, which can utilize a telescopic rod to perform telescopic movement on a direct current output port by arranging a port protection device, then utilizes a cover plate to isolate air, prevents air dust and moisture from entering the direct current output port, can dry air in a cavity by a drying device arranged on the cover plate, can protect the direct current output port in an environment with higher air humidity, solves the problem that the direct current output port is rusted by the moisture, and further influences the electric conductivity and the normal use of the welding machine, can utilize a water inlet and a water outlet to circulate cooling water in a main cooling channel and an auxiliary cooling channel by arranging a cooling plate, takes away heat emitted by electronic elements, has better heat dissipation effect, is suitable for the condition of poor heat dissipation effect of a heat dissipation fan in a high-temperature environment, and ensures the normal use of the direct current arc welding machine in the high-temperature environment, to solve the problems set forth in the background art described above.
In order to achieve the purpose, the invention provides the following technical scheme: a direct current arc welding machine comprises a shell, wherein a control panel is arranged at the upper end of the front surface of the shell, a heat dissipation window is arranged at the lower end position, close to the control panel, of the front surface of the shell, a port protection device is fixedly arranged at the lower end position, close to the heat dissipation window, of the front surface of the shell, a heat dissipation fan is arranged at the middle position of the rear surface of the shell, a cooling plate is fixedly arranged at the bottom end inside the shell, a first rectifier is arranged at one end of the upper surface of the cooling plate, an IGBT transistor is arranged at one side position, close to the first rectifier, of the upper surface of the cooling plate, a transformer is arranged at one side position, close to the IGBT transistor, of the upper surface of the cooling plate, and a second rectifier is arranged at one side position, close to the transformer, of the upper surface of the cooling plate;
the port protection device comprises a telescopic rod fixedly arranged at the lower end of the cooling plate, one end of the telescopic rod is fixedly provided with an installation block, one end of the installation block is provided with a direct current output port, a top column is fixedly arranged at a position, close to the upper part of the direct current output port, of one end of the installation block, and one end of the cooling plate is rotatably connected with a cover plate through a hinge;
the cooling plate comprises a plate body fixedly mounted at the bottom end inside the shell, a water inlet and a water outlet are formed in one end of the plate body penetrating through the rear surface of the shell, a main cooling channel is arranged inside the plate body, an auxiliary cooling channel is connected to the side surface of the main cooling channel in a penetrating mode, and one end of the main cooling channel is respectively connected with the water inlet and the water outlet in a penetrating mode.
When the welding machine is idle, the direct current lead is generally rolled additionally, so that the direct current output port is directly exposed (the direct current output port is generally made of red copper or brass), the brass port is easy to rust after being placed for a long time in an environment with high air humidity, most direct current output ports are butted with direct current plugs of electrode holders and grounding pliers through internal threads, if the direct current output ports are seriously corroded, the internal threads are blocked, the electric conductivity of the direct current output port and the normal use of the welding machine are affected, a common dust cover cannot effectively isolate moisture, through arranging a port protection device, the mounting block is driven by a telescopic rod to telescopically move the direct current output port, then a cover plate is used for isolating air, so that air dust and the moisture are prevented from entering the direct current output port, a drying device arranged on the cover plate can dry air in a cavity, and the direct current output port can be protected in the environment with high air humidity, the problem that the conductivity and the normal use of a welding machine are influenced due to the fact that moisture causes corrosion of the direct current output port is solved; the direct current arc welding machine has larger current in the using process, the electronic element can generate more heat, if the heat is not discharged in time, the internal temperature of the arc welding machine is overhigh, and the normal work of the arc welding machine is influenced, in the prior art, the heat is usually radiated by installing a hot fan and matching a heat radiation window, but in high-temperature weather, the heat radiation effect is poor only by the heat radiation fan, the heat can not be radiated well, and further the safe work of the arc welding machine is influenced, through arranging a cooling plate, cooling water can circulate in a main cooling channel and an auxiliary cooling channel by utilizing a water inlet and a water outlet, the heat radiated by the electronic element is taken away, the heat radiation effect is better, the direct current arc welding machine is suitable for the condition that the heat radiation effect of the heat radiation fan in the high-temperature environment is not good, and the normal use of the direct current arc welding machine in the high-temperature environment is ensured; according to the invention, the cooling plate is matched with the port protection device, so that waterproof and heat dissipation protection can be well performed on the direct current output port and internal electronic elements, the normal work of the welding machine is ensured, and the service life of the welding machine is prolonged.
Preferably, the side surface of the cover plate close to the direct current output port is provided with a drying device, the drying device is arranged in a mounting groove in the side surface of the cover plate in an embedded mode, a drying layer is arranged inside the mounting groove, the outer edge of the mounting groove is fixedly provided with a fixing plate through a bolt, and the side surface of the fixing plate is provided with a plurality of drying holes in a rectangular penetrating mode.
When the welding machine is idle, under the great condition of air humidity, drying device can carry out the drying to the intracavity air, can protect DC output port in the higher environment of air humidity, but drying device uses the back for a long time, and the dry layer can become invalid, and drying effect descends, needs to dismantle the change to drying device, through setting up the fixed plate, only need take off the fixed plate through the bolt when dismantling, again to the inside dry layer of mounting groove.
Preferably, the side surfaces of the water inlet and the water outlet are connected with a screwing cap in a sleeved mode through threads, the edge position of the side surface of the screwing cap is provided with a second sealing ring, the port positions of the water inlet and the water outlet are fixedly connected with a connecting piece, and the connecting positions of the water inlet and the water outlet and the connecting piece are provided with first sealing rings.
When the welding machine works, the water inlet and the water outlet need to be communicated with an external pipeline for circulating supply of cooling water, the water inlet and the water outlet are generally connected with the external pipeline in a flange connection mode in the prior art, the connection mode has poor tightness, once water leakage occurs, serious consequences can be caused, equipment damage or casualties can be caused, the flange connection mode is troublesome to install and disassemble and inconvenient to use, screwing caps are arranged on the side surfaces of the water inlet and the water outlet, connecting pieces are arranged at ports of the water inlet and the water outlet, the water inlet and the water outlet are fixedly connected with the connecting pieces through threads, the installation and the disassembly are convenient, after the connecting pieces are screwed, the first sealing ring can be extruded, the first sealing ring is deformed, a good sealing ring effect is generated, and the sealing effect is further ensured by matching with a second sealing ring arranged on the screwing caps, the water leakage situation is avoided.
Preferably, the side surfaces of the port positions of the water inlet and the water outlet are provided with threads, the connecting positions of the connecting piece and the water inlet and the water outlet are also provided with threads, and the connecting piece is fixedly connected with the water inlet and the water outlet through the threads respectively.
The connecting piece passes through the screw thread respectively in water inlet, delivery port fixed connection, and the installation is dismantled conveniently, and the back is screwed to the connecting piece, can extrude first sealing washer for first sealing washer warp, produces good sealing washer effect, and the cooperation is screwed the second sealing washer that sets up on the cap, has further guaranteed sealed effect, has avoided the emergence of the condition of leaking.
Preferably, a third sealing ring is arranged at the connecting position of the cover plate and the shell, and the third sealing ring is a rubber component.
The third sealing ring is arranged at the connecting position of the cover plate and the shell, so that the sealing performance of the port protection device can be guaranteed, and external moisture is prevented from entering the cavity to corrode the direct current output port.
Preferably, a temperature sensor is fixedly mounted in the middle of the top end in the shell, and a communication module is arranged in the temperature sensor.
A temperature sensor is fixedly arranged in the middle of the top end inside the shell, the temperature inside the shell can be detected in real time, and when the temperature exceeds a preset temperature, the heat radiation fan 8 can be turned on or the cooling plate can be connected to perform cooling.
Preferably, four rollers are arranged at the edge of the lower surface of the shell in a rectangular distribution mode, and a lifting handle is fixedly arranged on the upper surface of the shell.
The lower surface border position of casing is the rectangle and distributes and installs four gyro wheels, the last fixed surface of casing installs the handle, and the mobility that the welding machine can be improved to gyro wheel cooperation handle, is convenient for remove.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the port protection device is arranged, the telescopic rod is used for driving the mounting block to stretch and move the direct current output port, the cover plate is used for isolating air, so that air dust and moisture are prevented from entering the direct current output port, the drying device arranged on the cover plate can dry air in the cavity, the direct current output port can be protected in an environment with high air humidity, and the problems that the conductivity and the normal use of a welding machine are influenced due to the corrosion of the direct current output port caused by the moisture are solved.
2. By arranging the cooling plate, cooling water can circulate in the main cooling channel and the auxiliary cooling channel by utilizing the water inlet and the water outlet to take away heat emitted by the electronic element, the cooling fan has a good cooling effect, is suitable for the condition of poor cooling effect of the cooling fan in a high-temperature environment, and ensures the normal use of the direct-current arc welding machine in the high-temperature environment; according to the invention, the cooling plate is matched with the port protection device, so that waterproof and heat dissipation protection can be well performed on the direct current output port and internal electronic elements, the normal work of the welding machine is ensured, and the service life of the welding machine is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic structural diagram of a port protection device according to the present invention;
FIG. 4 is a schematic diagram of a cooling plate structure according to the present invention;
FIG. 5 is a schematic view of the drying apparatus according to the present invention;
FIG. 6 is a schematic view of a water outlet connection structure according to the present invention;
fig. 7 is a rear view structural diagram of the present invention.
Description of reference numerals:
in the figure: 1. a housing; 2. a roller; 3. a port protection device; 31. a telescopic rod; 32. mounting blocks; 33. a DC output port; 34. a drying device; 341. mounting grooves; 342. drying the layer; 343. a fixing plate; 344. drying the pores; 35. a third seal ring; 36. a cover plate; 37. a top pillar; 4. a heat dissipation window; 5. a control panel; 6. a handle; 7. a temperature sensor; 8. a heat radiation fan; 9. a cooling plate; 91. a plate body; 92. a main cooling channel; 93. a water inlet; 94. a water outlet; 95. a secondary cooling channel; 10. a second rectifier; 11. a transformer; 12. an IGBT transistor; 13. a first rectifier; 14. screwing the cap; 15. a first seal ring; 16. a connecting member; 17. and a second seal ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 7, the present invention provides a technical solution of a dc arc welding machine:
a direct current arc welding machine is shown in figure 1 and comprises a shell 1, wherein a control panel 5 is arranged at the upper end of the front surface of the shell 1, a heat dissipation window 4 is arranged at the lower end position, close to the control panel 5, of the front surface of the shell 1, and a port protection device 3 is fixedly arranged at the lower end position, close to the heat dissipation window 4, of the front surface of the shell 1;
as shown in fig. 2, a heat dissipation fan 8 is disposed at a middle position of the rear surface of the housing 1, a cooling plate 9 is fixedly mounted at the bottom end inside the housing 1, a first rectifier 13 is disposed at one end of the upper surface of the cooling plate 9, an IGBT transistor 12 is disposed at a position on one side of the upper surface of the cooling plate 9, which is close to the first rectifier 13, a transformer 11 is disposed at a position on one side of the upper surface of the cooling plate 9, which is close to the IGBT transistor 12, wherein the selectable models of the transformer 11 are: the model of NDK-100, the position of one side that the upper surface of cooling plate 9 is close to transformer 11 is provided with second rectifier 10, and the optional model of second rectifier 10 is: HF-R type 226-42;
as shown in fig. 3, the port protection device 3 includes an expansion link 31 fixedly mounted at the lower end of the cooling plate 9, one end of the expansion link 31 is fixedly mounted with a mounting block 32, one end of the mounting block 32 is provided with a dc output port 33, one end of the mounting block 32 is fixedly mounted with a top pillar 37 at a position above the dc output port 33, and one end of the cooling plate 9 is rotatably connected with a cover plate 36 through a hinge;
as shown in fig. 4, the cooling plate 9 includes a plate body 91 fixedly mounted at the bottom end inside the housing 1, one end of the plate body 91 penetrates through the rear surface of the housing 1 and is provided with a water inlet 93 and a water outlet 94, a main cooling channel 92 is arranged inside the plate body 91, an auxiliary cooling channel 95 is connected to the side surface of the main cooling channel 92 in a penetrating manner, and one end of the main cooling channel 92 is respectively connected to the water inlet 93 and the water outlet 94 in a penetrating manner.
When the welding machine is idle, the direct current lead is generally additionally wound, so that the direct current output port 33 is directly exposed (the direct current output port 33 is generally made of red copper or brass), the brass port is easy to rust after being placed for a long time in an environment with high air humidity, most direct current output ports 33 are butted with direct current plugs of electrode holders and grounding pliers through internal threads, if the direct current output ports are seriously corroded, the internal threads are blocked, the electric conductivity of the direct current output port 33 and the normal use of the welding machine are influenced, a common dust cover cannot effectively isolate moisture, through arranging the port protection device 3, the telescopic rod 31 is used for driving the mounting block 32 to telescopically move the direct current output port 33, then the cover plate 36 is used for isolating the air, air dust and the moisture are prevented from entering the direct current output port 33, and the drying device 34 arranged on the cover plate 36 can dry the air in the cavity, the direct current output port 33 can be protected in an environment with high air humidity, and the problems that the conductivity and the normal use of a welding machine are influenced due to the fact that the direct current output port 33 is rusted by moisture are solved; the direct current arc welding machine has the advantages that the current is large in the using process, electronic elements can generate more heat, if the heat is not discharged in time, the internal temperature of the arc welding machine is overhigh, and the normal work of the arc welding machine is influenced, in the prior art, the heat is usually radiated by installing the heat radiation fan 8 and matching the heat radiation window 4, but in high-temperature weather, the heat radiation effect is poor only through the heat radiation fan 8, the heat radiation cannot be performed well, and further the safe work of the arc welding machine is influenced, through the arrangement of the cooling plate 9, cooling water can be circulated in the main cooling channel 92 and the auxiliary cooling channel 95 through the water inlet 93 and the water outlet 94, the heat radiated by the electronic elements is taken away, the heat radiation effect is good, the direct current arc welding machine is suitable for the condition that the heat radiation effect of the heat radiation fan 8 in the high-temperature environment is poor, and the normal use of the direct current arc welding machine in the high-temperature environment is ensured; according to the invention, the cooling plate 9 is matched with the port protection device 3, so that waterproof and heat dissipation protection can be well performed on the direct current output port 33 and internal electronic elements, the normal work of the welding machine is ensured, and the service life of the welding machine is prolonged.
As an embodiment of the present invention, as shown in fig. 5, a drying device 34 is disposed on a side surface of the cover plate 36 close to the dc output port 33, the drying device 34 includes a mounting groove 341 embedded in the side surface of the cover plate 36, a drying layer 342 is disposed inside the mounting groove 341, a fixing plate 343 is fixedly mounted at an outer edge position of the mounting groove 341 by bolts, and a plurality of drying holes 344 are penetratingly disposed on a side surface of the fixing plate 343 in a rectangular shape; when the welding machine is idle, under the great condition of air humidity, drying device 34 can carry out the drying to the intracavity air, can protect DC output port 33 in the higher environment of air humidity, but drying device 34 uses the back for a long time, dry layer 342 can become invalid, drying effect descends, need dismantle the change to drying device 34, through setting up fixed plate 343, only need take off fixed plate 343 through the bolt when dismantling, again to mounting groove 341 inside dry layer 342 change can, the installation is dismantled simply, be convenient for change, dry layer 342's change efficiency has been improved.
As an embodiment of the present invention, as shown in fig. 6, a screwing cap 14 is connected to side surfaces of the water inlet 93 and the water outlet 94 in a sleeved manner by a screw thread, a second sealing ring 17 is disposed at an edge position of the side surface of the screwing cap 14, a connecting member 16 is fixedly connected to a port position of the water inlet 93 and the water outlet 94, and a first sealing ring 15 is disposed at a connecting position of the connecting member 16 and the water inlet 93 and the water outlet 94; when the welding machine works, the water inlet 93 and the water outlet 94 need to be communicated with an external pipeline for circulating supply of cooling water, the prior art generally adopts a flange connection mode to connect the water inlet 93 and the water outlet 94 with the external pipeline, the connection mode has poor tightness, once water leakage occurs, serious consequences can be caused, equipment damage or casualties can be caused, the flange connection mode is troublesome to install and disassemble and is inconvenient to use, the screwing caps 14 are arranged on the side surfaces of the water inlet 93 and the water outlet 94, the connecting pieces 16 are arranged at the ports of the water inlet 93 and the water outlet 94, the water inlet 93 and the water outlet 94 are fixedly connected with the connecting pieces 16 through threads, the installation and the disassembly are convenient, after the connecting pieces 16 are screwed, the first sealing ring 15 can be extruded, so that the first sealing ring 15 is deformed, a good sealing ring effect can be generated, and the second sealing ring 17 arranged on the screwing cap 14 is matched, further ensuring the sealing effect and avoiding the water leakage.
Specifically, as shown in fig. 6, the side surfaces of the port positions of the water inlet 93 and the water outlet 94 are provided with threads, the connecting positions of the connecting piece 16 and the water inlet 93 and the water outlet 94 are also provided with threads, and the connecting piece 16 is fixedly connected to the water inlet 93 and the water outlet 94 through the threads.
Through adopting above-mentioned technical scheme, connecting piece 16 is respectively in water inlet 93, delivery port 94 fixed connection through the screw thread, and the installation is dismantled conveniently, and connecting piece 16 screws the back, can extrude first sealing washer 15 for first sealing washer 15 warp, produces good sealing washer effect, and the cooperation is screwed the second sealing washer 17 that sets up on the cap 14, has further guaranteed sealed effect, has avoided the emergence of the condition of leaking.
Specifically, as shown in fig. 3, a third sealing ring 35 is disposed at a connecting position of the cover plate 36 and the housing 1, and the third sealing ring 35 is a rubber member.
Through adopting above-mentioned technical scheme, the hookup location of apron 36 and casing 1 is provided with third sealing washer 35, can guarantee port protection device 3's leakproofness, prevents that outside moisture from getting into the intracavity, corrodes direct current output port 33.
Specifically, as shown in fig. 2, a temperature sensor 7 is fixedly mounted in the middle of the top end inside the casing 1, a communication module is arranged inside the temperature sensor 7, wherein the selectable models of the temperature sensor 7 are as follows: T10R-PT type.
Through adopting above-mentioned technical scheme, casing 1 inside top intermediate position fixed mounting has temperature sensor 7, can detect casing 1 inside temperature in real time, when the temperature surpassed predetermined temperature, can open radiator fan 8 or switch-on cooling plate 9 and carry out cooling.
Specifically, as shown in fig. 1, four rollers 2 are arranged at the edge of the lower surface of the housing 1 in a rectangular distribution, and a handle 6 is fixedly arranged on the upper surface of the housing 1.
Through adopting above-mentioned technical scheme, the lower surface border position of casing 1 is the rectangle and distributes and install four gyro wheels 2, the last fixed surface of casing 1 installs handle 6, and gyro wheel 2 cooperates handle 6 can improve the mobility of welding machine, is convenient for remove.
The working principle is as follows: according to the invention, the port protection device 3 is arranged, the mounting block 32 is driven by the telescopic rod 31 to perform telescopic movement on the direct current output port 33, the cover plate 36 is used for isolating air, so that air dust and moisture are prevented from entering the direct current output port 33, the drying device 34 arranged on the cover plate 36 can dry air in the cavity, the direct current output port 33 can be protected in an environment with high air humidity, and the problems that the corrosion of the direct current output port 33 caused by the moisture further affects the conductivity and the normal use of a welding machine are solved; by arranging the cooling plate 9, cooling water can circulate in the main cooling channel 92 and the auxiliary cooling channel 95 by utilizing the water inlet 93 and the water outlet 94, so that heat emitted by electronic elements is taken away, the heat dissipation effect is good, the direct-current arc welding machine is suitable for the condition that the heat dissipation effect of the heat dissipation fan 8 in a high-temperature environment is not good, and the normal use of the direct-current arc welding machine in the high-temperature environment is ensured; according to the invention, the cooling plate 9 is matched with the port protection device 3, so that waterproof and heat dissipation protection can be well performed on the direct current output port 33 and internal electronic elements, the normal work of the welding machine is ensured, and the service life of the welding machine is prolonged.
The using method comprises the following steps: when the invention is used, firstly the welding machine is transported to a using place through the roller 2 and the handle 6, when the welding machine is used, the power supply is switched on, the power frequency (50Hz) alternating current is firstly rectified and filtered by the first rectifier 13 to become direct current, then the direct current is inverted into the intermediate frequency alternating current of several kHz to dozens of kHz through the IGBT transistor 12, simultaneously the voltage is reduced to dozens of volts suitable for welding through the transformer 11, the direct current is rectified again through the second rectifier 10 and filtered by the reactance, and the stable direct current welding current is output through the direct current output port 33 for welding, when in high temperature weather, the expected heat dissipation effect can not be achieved by only depending on the heat dissipation fan 8 for heat dissipation, at the moment, the external pipeline can be switched on through the water inlet 93 and the water outlet 94, the cooling water can circulate in the main cooling channel 92 and the auxiliary cooling channel 95, the heat dissipated by the electronic elements is taken away, the heat dissipation effect is better, and the invention is suitable for the condition that the heat dissipation effect of the heat dissipation fan 8 in high temperature environment is not good, the normal use of the direct current arc welding machine in a high-temperature environment is ensured, when the welding machine is idle, a direct current lead is generally coiled additionally, so that the direct current output port 33 is directly exposed outside (the direct current output port 33 is generally made of red copper or brass), the brass port is easy to rust after being placed for a long time in an environment with high air humidity, most of the direct current output ports 33 are butted with direct current plugs of electrode holders and grounding pliers through internal threads, if the direct current output ports are seriously corroded, the electric conductivity of the direct current output port 33 and the normal use of the welding machine are influenced, a common dust cover cannot effectively isolate moisture, through the arrangement of the port protection device 3, the telescopic rod 31 is used for driving the installation block 32 to telescopically move the direct current output port 33, the cover plate 36 is used for isolating air, and air dust and moisture are prevented from entering the direct current output port 33, the drying device 34 provided on the cover plate 36 can dry the air in the chamber, and can protect the dc output port 33 in an environment with high air humidity.
The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A direct current arc welder comprising a housing (1), characterized in that: a control panel (5) is arranged at the upper end of the front surface of the shell (1), a heat radiation window (4) is arranged at the lower end of the front surface of the shell (1) close to the control panel (5), a port protection device (3) is fixedly arranged on the front surface of the shell (1) close to the lower end of the heat dissipation window (4), a heat radiation fan (8) is arranged in the middle of the rear surface of the shell (1), a cooling plate (9) is fixedly arranged at the bottom end in the shell (1), a first rectifier (13) is arranged at one end of the upper surface of the cooling plate (9), an IGBT transistor (12) is arranged on one side of the upper surface of the cooling plate (9) close to the first rectifier (13), a transformer (11) is arranged on one side of the upper surface of the cooling plate (9) close to the IGBT transistor (12), a second rectifier (10) is arranged on one side of the upper surface of the cooling plate (9) close to the transformer (11);
the port protection device (3) comprises an expansion link (31) fixedly mounted at the lower end of the cooling plate (9), a mounting block (32) is fixedly mounted at one end of the expansion link (31), a direct current output port (33) is arranged at one end of the mounting block (32), a top column (37) is fixedly mounted at a position, close to the upper part of the direct current output port (33), at one end of the mounting block (32), and a cover plate (36) is rotatably connected at one end of the cooling plate (9) through a hinge;
the cooling plate (9) comprises a plate body (91) fixedly mounted at the bottom end inside the shell (1), one end of the plate body (91) penetrates through the rear surface of the shell (1) and is provided with a water inlet (93) and a water outlet (94), a main cooling channel (92) is arranged inside the plate body (91), an auxiliary cooling channel (95) penetrates through the side surface of the main cooling channel (92), and one end of the main cooling channel (92) is respectively connected with the water inlet (93) and the water outlet (94) in a penetrating manner;
and a third sealing ring (35) is arranged at the connecting position of the cover plate (36) and the shell (1), and the third sealing ring (35) is a rubber component.
2. A direct current arc welder according to claim 1, characterized in that: the side surface of the cover plate (36) close to the direct current output port (33) is provided with a drying device (34), the drying device (34) comprises an installation groove (341) embedded in the side surface of the cover plate (36), a drying layer (342) is arranged inside the installation groove (341), the outer edge of the installation groove (341) is fixedly provided with a fixing plate (343) through a bolt, and the side surface of the fixing plate (343) is rectangular and is provided with a plurality of drying holes (344) in a penetrating mode.
3. A direct current arc welder according to claim 1, characterized in that: the side surface of water inlet (93) and delivery port (94) is connected with through threaded sleeve and is screwed up cap (14), the side surface edge position of screwing up cap (14) is provided with second sealing washer (17), the port position fixedly connected with connecting piece (16) of water inlet (93) and delivery port (94), the hookup location of water inlet (93) and delivery port (94) and connecting piece (16) is provided with first sealing washer (15).
4. A direct current arc welder according to claim 3, characterized in that: the side surfaces of the port positions of the water inlet (93) and the water outlet (94) are provided with threads, the connecting positions of the connecting piece (16) and the water inlet (93) and the water outlet (94) are also provided with threads, and the connecting piece (16) is fixedly connected with the water inlet (93) and the water outlet (94) through the threads.
5. A direct current arc welder according to claim 1, characterized in that: the temperature sensor (7) is fixedly mounted in the middle of the top end in the shell (1), and the communication module is arranged in the temperature sensor (7).
6. A direct current arc welder according to claim 1, characterized in that: the lower surface border position of casing (1) is the rectangle and distributes and installs four gyro wheels (2), the last fixed surface of casing (1) installs handle (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010779136.2A CN111906423B (en) | 2020-08-05 | 2020-08-05 | DC arc welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010779136.2A CN111906423B (en) | 2020-08-05 | 2020-08-05 | DC arc welding machine |
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| Publication Number | Publication Date |
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| CN111906423A CN111906423A (en) | 2020-11-10 |
| CN111906423B true CN111906423B (en) | 2021-11-19 |
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| CN202010779136.2A Active CN111906423B (en) | 2020-08-05 | 2020-08-05 | DC arc welding machine |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068987A (en) * | 1991-07-27 | 1993-02-17 | 成都科技大学 | Arc stabilizer of intermediate frequency |
| CN2352301Y (en) * | 1998-06-12 | 1999-12-08 | 燕山大学 | Normal shocking, contravariant, circuitous ventilating type arc welding machine |
| US6831838B1 (en) * | 2003-05-14 | 2004-12-14 | Illinois Tool Works Inc. | Circuit board assembly for welding power supply |
| CN206253787U (en) * | 2016-12-06 | 2017-06-16 | 北京居佳祥和装饰工程有限公司 | Domestic miniature arc-welding machine |
| CN206366736U (en) * | 2016-12-29 | 2017-08-01 | 浙江普尔尼机电有限公司 | A kind of new mainboard structure of IGBT inversion submerged arc welding machines |
| CN206702446U (en) * | 2017-03-06 | 2017-12-05 | 青岛澳铃逆变科技有限公司 | Double medium cooling systems of argon arc welding machine |
| CN208961199U (en) * | 2018-11-05 | 2019-06-11 | 浙江普尔尼机电股份有限公司 | A kind of argon arc welding machine |
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Effective date of registration: 20211101 Address after: 201412 fourth floor, building 2, No. 39, Lane 628, Haiyi Road, Situan Town, Fengxian District, Shanghai Applicant after: Shanghai Welding Huang Electric Co.,Ltd. Address before: 241002 iFLYTEK intelligent building, No. 9, Wenjin West Road, Shugang street, Yijiang District, Wuhu City, Anhui Province Applicant before: Wuhu Huiyue Mechanical Design Co.,Ltd. |
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