CN216938868U - Welding device capable of measuring temperature - Google Patents
Welding device capable of measuring temperature Download PDFInfo
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- CN216938868U CN216938868U CN202123109294.6U CN202123109294U CN216938868U CN 216938868 U CN216938868 U CN 216938868U CN 202123109294 U CN202123109294 U CN 202123109294U CN 216938868 U CN216938868 U CN 216938868U
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Abstract
The application discloses welding set of measurable temperature, but welding set of measurable temperature is used for waiting to weld region or an at least welding wire and carries out temperature detection, but welding set of measurable temperature includes a steering welding subassembly and a temperature control component, steering welding subassembly includes a welding piece, the welding piece is used for the welding, the temperature control component includes a temperature measurement piece, the temperature measurement piece install in steering welding subassembly is used for detecting welding temperature. The temperature measuring part can measure the temperature of the welding wire in a molten state and can also measure the temperature of a region to be welded, and the temperature of the welding wire or the part to be welded in the welding process is monitored at any time. The welding device is provided with the control piece, the control piece is electrically connected with the temperature measuring piece and can control whether the welding piece is electrified or not, and when the temperature measuring piece measures that the temperature of the piece to be welded or the welding wire is overhigh, the temperature measuring piece controls the power-off of the welding piece so as to ensure the welding quality and the operation safety.
Description
Technical Field
The utility model relates to the field of welding, in particular to a welding device capable of measuring temperature.
Background
Welding, which is a method of joining metals or other thermoplastic materials in a heated, high temperature or high pressure manner. The welding process can be divided into two types, one type does not need welding materials, the joint of two workpieces is melted, and the two workpieces are connected into a whole after being cooled. For the first kind of welding method, when welding is carried out, the temperature is too high, the loss of metal components of a part to be welded can be caused, the strength and the toughness of a welding position are reduced, and the deformation of the welded part is easy to cause.
While other welding techniques require the use of a welding wire, which acts as a filler metal to securely weld two workpieces together. The welding method requiring the welding wire has the advantages that the temperature of the welding wire in the molten state is important, the temperature of the welding wire in the molten state is too high, the reaction welding gun melts the welding wire, the current in the welding gun is too large, the adverse effects of melting of insulating substances in the welding gun and the like can be caused, and the service life of the welding gun is further shortened.
SUMMERY OF THE UTILITY MODEL
The welding device capable of measuring the temperature has the advantages that the welding device capable of measuring the temperature is provided with the temperature measuring part and the welding part, the temperature measuring part can measure the temperature of the welding wire in a molten state and can also measure the temperature of a region to be welded, and the temperature of the welding wire or a part to be welded in the welding process can be monitored at any time.
The welding device capable of measuring the temperature has the advantages that the control piece is arranged, the control piece is electrically connected with the temperature measuring piece and can control whether the welding piece is electrified or not, and when the temperature measuring piece measures that the temperature of the to-be-welded piece or the welding wire is overhigh, the temperature measuring piece controls the welding piece to be powered off, so that the welding quality is guaranteed, and the operation is safe.
The welding device capable of measuring the temperature has the advantages that the positioning piece is arranged, is arranged on the welding piece and moves along with the movement of the welding piece, so that the part needing to be welded can be accurately positioned, and the positioning accuracy can be improved.
Another advantage of the present invention is a temperature measurable welding apparatus that provides a welding member and a wire supply member with welding wire stored therein, and with welding wire within the wire supply member being provided with the welding member, avoiding manual feeding.
Another advantage of the present invention is a temperature-measurable welding apparatus that includes a solid orientation adjustment member for adjusting the position of the welding member in the X-axis, Y-axis, and Z-axis directions
Another advantage of the present invention is that the welding device capable of measuring temperature further comprises a fine adjustment guide mechanism for adjusting the spatial position of the welding member to a small extent, so that the welding member can be positioned more accurately.
Another advantage of the present invention is a welding apparatus capable of measuring temperature, wherein a wire cutting assembly is provided to cut a portion of a welding wire that is oxidized during welding, thereby improving the tightness of the joint between the steel plates.
The welding device capable of measuring temperature has the advantage that the splash-proof liquid spraying assembly is arranged for spraying the splash-proof liquid on the welding part, so that the injury of oxides splashed in the welding process to workers can be reduced.
The welding device capable of measuring temperature is further provided with a descaling piece, and the welding piece is provided with a welding wire installation channel and used for stripping oxide attached to the inner wall of the welding wire installation channel, so that excessive accumulation of the oxide is avoided, and the smoothness of the welding installation channel is ensured.
To achieve at least one of the above advantages, the present invention provides a temperature-measurable welding apparatus for temperature detection of a region to be welded or at least one welding wire, the temperature-measurable welding apparatus including:
the steering welding assembly comprises a welding piece, and the welding piece is used for welding;
and the temperature control component comprises a temperature measuring part, and the temperature measuring part is arranged on the steering welding assembly and is used for detecting the welding temperature.
According to an embodiment of the present invention, the temperature control member includes a control member, the temperature measuring member is electrically connected to the control member, and the welding member is controllably connected to the control member.
According to an embodiment of the utility model, the welding part is provided with a welding wire installation channel which is used for inserting the welding wire.
According to an embodiment of the present invention, the steering welding assembly further includes a rotating member, the rotating member is rotatably mounted on the welding member, and the rotating member is configured to drive the welding member to rotate.
According to an embodiment of the present invention, the steering welding assembly further includes a positioning member, the positioning member is mounted on the welding member, and the positioning member is used for positioning a welding position.
According to an embodiment of the present invention, the welding device capable of measuring temperature further comprises a welding wire feeding assembly, wherein the welding wire feeding assembly comprises a welding wire storage member, the welding wire storage member is provided with a storage cavity, the storage cavity is used for storing the welding wire, the welding wire storage member is used for supplying the welding wire, and the welding wire storage member is arranged at one end of the rotating member far away from the welding member.
According to an embodiment of the present invention, the wire supply assembly further comprises a wire feeder mounted between the wire storage and the welding member in such a manner as to be capable of feeding the welding wire.
According to an embodiment of the present invention, the welding device capable of measuring temperature further includes a three-dimensional orientation adjusting member, the three-dimensional orientation adjusting member includes a Y-axis direction guiding mechanism, and the steering welding assembly is mounted on the Y-axis direction guiding mechanism for adjusting the position of the steering welding assembly in the Y-axis direction.
According to an embodiment of the present invention, the Y-axis direction guiding mechanism includes at least a Y-axis member, a first sliding structure and a first connecting member, the first sliding structure is disposed between the Y-axis member and the first connecting member, the first sliding structure is configured to limit the first connecting member to slide relative to the Y-axis member, and the steering welding assembly is disposed on the first connecting member.
According to an embodiment of the present invention, the Y-axis component includes a fixing portion and at least one supporting portion, the supporting portion is used for supporting the fixing portion, and the first sliding structure is disposed between the fixing portion and the first connecting member in a manner of limiting the movement of the first connecting member.
According to an embodiment of the present invention, the attitude adjustment member further includes a Z-axis direction guide mechanism which is installed between the Y-axis direction guide and the steering weld unit in such a manner that the attitude of the steering weld unit in the Z-axis direction can be adjusted.
According to an embodiment of the present invention, the Z-axis direction guiding mechanism includes a Z-axis member, a second sliding structure and a second connecting member, the second connecting member is mounted at an end of the rotating member away from the welding member, the second sliding structure is disposed between the Z-axis member and the second connecting member, and the second sliding structure is configured to limit the second connecting member to slide relative to the Z-axis member.
According to an embodiment of the present invention, the three-dimensional orientation adjustment member further includes at least one X-axis direction guide structure, the X-axis direction guide structure is disposed at two end portions of the Y-axis direction guide, and the X-axis direction guide structure is configured to adjust a position of the steering welding assembly in the X-axis direction.
According to an embodiment of the present invention, the X-axis direction guiding mechanism includes at least an X-axis member, a third sliding mechanism disposed between the X-axis member and the Y-axis member, and the third sliding mechanism limits the Y-axis member to slide relative to the X-axis member.
According to an embodiment of the present invention, the X-axis direction guiding mechanism includes at least one X-axis auxiliary member, the X-axis auxiliary member is slidably mounted on the supporting portion, and the X-axis auxiliary member is used for increasing the stability of the movement of the Y-axis guiding mechanism.
According to an embodiment of the present invention, the orientation adjustment member further includes at least one fine adjustment guide mechanism, the fine adjustment guide mechanism is disposed between the second connecting member and the Y-axis direction guide mechanism, and the fine adjustment guide mechanism is used for adjusting the fine adjustment assembly in a small degree.
According to an embodiment of the present invention, the fine adjustment guide mechanism includes a guide member and a fine adjustment sliding structure, the guide member is installed on a side of the first connecting member away from the Y-axis member, the fine adjustment sliding structure is disposed between the guide member and the second connecting member, and the fine adjustment sliding structure is configured to limit the second connecting member to slide relative to the guide member.
According to an embodiment of the utility model, the welding device capable of measuring temperature further comprises a gun cleaning wire cutting assembly, and the gun cleaning wire cutting assembly comprises a main body and a wire cutting piece, wherein the main body is used for cutting the welding wire.
According to an embodiment of the utility model, the gun cleaning wire cutting assembly further comprises a scale cleaning piece, the scale cleaning piece is mounted on the main body, and the scale cleaning piece is used for removing attachments on the inner wall of the welding wire mounting channel.
According to an embodiment of the present invention, the main body forms an installation cavity, the scale removing member is movably installed in the installation cavity, the main body forms an insertion channel in the scale removing member, the insertion channel defines an insertion opening, and the insertion channel is used for defining an insertion position of the welding member.
According to an embodiment of the utility model, the main body further comprises a splash-proof liquid spraying assembly, the splash-proof liquid spraying assembly is mounted on the main body, and the splash-proof liquid spraying assembly is provided with a spraying opening which is used for spraying splash-proof liquid on the inner wall of the welding wire mounting channel.
According to an embodiment of the present invention, the spatter preventing liquid spraying assembly includes a spraying member, the spraying port is formed in the spraying member, the spraying member is installed at the main body, and the spraying member is used to spray spatter preventing liquid to the welding wire installation passage.
According to an embodiment of the present invention, the splash-proof spraying assembly further includes a liquid storage component, the liquid storage component has a liquid storage cavity, the liquid storage cavity is used for storing the splash-proof liquid, the liquid storage component is mounted on the main body, and the liquid storage component is disposed in the spraying component and communicated with the spraying component.
Drawings
Fig. 1 shows a schematic view of a temperature-measurable welding device according to the utility model.
FIG. 2 shows a cross-sectional view of a weldment of the present invention.
Fig. 3 shows a schematic view of a temperature-measurable welding device according to the utility model in another state.
Fig. 4 shows an overall block diagram of the temperature-measurable welding apparatus according to the present invention.
Fig. 5 is a schematic view showing the connection between the X-axis direction guide mechanism and the Y-axis direction guide mechanism according to the present invention.
Fig. 6 shows a structural schematic diagram of the gun cleaning wire cutting assembly.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1 to 6, a temperature-measurable welding apparatus for temperature-detecting a region to be welded or at least one welding wire according to a preferred embodiment of the present invention will be described in detail below. The welding device capable of measuring the temperature comprises a steering welding assembly 10 and a temperature control component 20, wherein the steering welding assembly 10 comprises at least one welding piece 11 for welding, the temperature control component 20 comprises a temperature measuring piece 21, and the temperature measuring piece 21 is installed on the steering welding assembly 10 and used for detecting the welding temperature.
Preferably, the temperature control member 20 includes a control part 22, the temperature measuring part 21 is electrically connected to the control part 22, and the welding part 11 is controllably connected to the control part 22.
Referring to fig. 2, the welding member 11 preferably has a wire installation channel 1101, the wire installation channel 1101 is used for inserting the welding wire, and the wire installation channel 1101 defines an opening 1102.
It is understood that, during the process of melting the welding member 11 by the welding wire, the temperature measuring member 21 detects the temperature of the welding wire in the molten state, and when the temperature detected by the temperature measuring member 21 exceeds a predetermined value, the control member 22 controls the welding member 11 to stop welding. And when the welding part 11 heats the area to be welded, the temperature measuring part 21 can detect the surface temperature of the area to be welded, and when the temperature detected by the temperature measuring part 21 exceeds a preset value, the control part 22 controls the welding part 11 to stop welding.
Preferably, the weldment 11 may be implemented as a welding gun.
Preferably, the steering welding assembly 10 further comprises a rotating member 12, the rotating member 12 is rotatably mounted to the welding member 11, and the rotating member 12 is configured to drive the welding member 11 to rotate.
Preferably, the rotary member 12 may be implemented as a six-axis robot arm.
It should be noted that the steering welding assembly 10 further includes a positioning member 13, the positioning member 13 is mounted on the welding member 11, and the positioning member 13 is used for positioning the welding position. Then, the positioning unit 13 positions the welding position of the welding material 11 to adjust the position of the welding material 11.
Further, the temperature measurable welding apparatus further includes a wire feeding assembly 30.
The welding wire supply assembly 30 comprises a welding wire storage 31, the welding wire storage 31 is provided with a storage cavity used for storing the welding wire, the welding wire storage 31 is used for supplying the welding wire, and the welding wire storage 31 is arranged at one end of the rotating part 12 far away from the welding part 11.
Preferably, the wire storage 31 may be embodied as a drum.
The wire feed assembly 30 further includes a wire feeder 32, the wire feeder 32 being mounted between the wire storage 31 and the welding member 11 in a manner to feed the welding wire. Thus, when the length of the welding wire in the welding wire installation path 1101 is shorter than a predetermined length, the wire feeder 32 feeds the welding member 11.
Referring to fig. 3 to 6, the temperature-measurable welding apparatus further includes a spatial orientation adjustment member 40.
The three-dimensional orientation adjusting member 40 includes a Y-axis direction guide mechanism 41, and the steering welding unit 10 is mounted on the Y-axis direction guide mechanism 41 to adjust the displacement of the steering welding unit 10 in the Y-axis direction.
Specifically, the Y-axis direction guide mechanism 41 includes at least a Y-axis element 411, a first sliding structure 412 and a first connecting element 413. The first sliding structure 412 is disposed between the Y-axis element 411 and the first connecting element 413, and the first sliding structure 412 is configured to limit the first connecting element 413 to slide relative to the Y-axis element 411. The steering weld assembly 10 remains below the Y-axis 411.
It should be mentioned that the Y-axis member 411 includes a fixing portion 4111 and at least one supporting portion 4112, the fixing portion 4111 extends in the Z-axis direction to form the supporting portion 4112, so as to support the fixing portion 4111. Preferably, two support portions 4112 are provided. The first sliding structure 412 is disposed between the fixing portion 4111 and the first connecting member 413 in a manner of limiting the movement of the first connecting member 413.
Preferably, the first sliding structure 412 may be implemented as a guide rail.
The attitude adjusting member 40 further includes a Z-axis direction guide mechanism 42, and the Z-axis direction guide mechanism 42 is installed between the Y-axis direction guide mechanism 41 and the steering weld module 10 in such a manner that the position of the steering weld module 10 in the Z-axis direction can be adjusted.
The Z-axis direction guiding mechanism 42 includes a Z-axis member 421, a second sliding structure 422 and a second connecting member 423, the second connecting member 423 is mounted at an end of the rotating member 12 away from the welding member 11, the second sliding structure 422 is disposed between the Z-axis member 421 and the second connecting member 423, and the second sliding structure 422 is used for limiting the second connecting member 423 to slide relative to the Z-axis member 421.
Preferably, the second sliding structure 422 may be implemented as a guide rail.
The three-dimensional orientation adjusting member 40 further includes at least one X-axis direction guiding mechanism 43, the X-axis direction guiding mechanisms 43 are disposed at two ends of the Y-axis direction guiding mechanism 41, and the X-axis direction guiding mechanism 43 is used for adjusting the position of the steering welding assembly 10 in the X-axis direction.
Specifically, the X-axis direction guiding mechanism 43 includes at least an X-axis member 431, a third sliding mechanism 432, the third sliding mechanism 432 is disposed between the X-axis member 431 and the Y-axis member 411, and the third sliding mechanism 432 limits the Y-axis member 411 to slide relative to the X-axis member 431.
Preferably, the X-axis direction guiding mechanism 43 further includes at least one X-axis auxiliary member 433, the X-axis auxiliary member 433 is slidably mounted on the supporting portion 4112, and the X-axis auxiliary member 433 is used to increase the stability of the movement of the Y-axis direction guiding mechanism 41.
Preferably, the X-axis member 431 and the X-axis auxiliary member 433 are positionally interchangeable.
Both the third sliding mechanism 432 and the X-axis auxiliary 433 may be implemented as a guide rail.
The three-dimensional orientation adjustment member 40 further includes at least one fine adjustment guide mechanism 44, and the fine adjustment guide mechanism 44 is disposed between the second connection member 423 and the Y-axis direction guide mechanism 41. The fine adjustment guide mechanism 44 is used to adjust the steering weld assembly 10 by a small amount.
Specifically, the fine adjustment guide mechanism 44 includes a guide element 441 and a fine adjustment sliding structure 442, and the guide element 441 is mounted on a side of the first connecting element 413 away from the Y-axis element 411. The fine adjustment sliding structure 442 is disposed between the guide 441 and the second connecting element 423, and the fine adjustment sliding structure 442 is used to limit the sliding of the second connecting element 423 relative to the guide 441.
Preferably, the fine adjustment sliding structure 442 may be implemented as a guide rail.
Referring to fig. 6, the temperature-measurable welding apparatus further includes a gun cleaning wire cutting assembly 50.
The gun cleaning wire cutting assembly 50 comprises a main body 51 and a wire cutting member 52, wherein the main body 51 is mounted on the steering welding assembly 10, the wire cutting member 52 is mounted on the main body 51, and the wire cutting member 52 is used for cutting the welding wire. During use of the weldment 11, a defective welding wire is produced, and the wire cutter 52 cuts the defective welding wire.
Preferably, the gun cleaning wire cutting assembly 50 further comprises a cleaning member 53, the cleaning member 53 is mounted on the main body 51, and the cleaning member 53 is used for removing attachments on the inner wall of the welding wire mounting passage 1101. In this way, the scale remover 53 is inserted into the wire installing passage 1101, and the frictional force between the scale remover 53 and the deposit on the inner wall of the wire installing passage 1101 peels off the deposit.
Preferably, the main body 51 forms an installation cavity, the cleaning element 53 is movably installed in the installation cavity, the main body 51 and the cleaning element 53 form an insertion channel, the insertion channel defines an insertion opening, and the insertion channel is used for limiting the insertion position of the welding element 11.
In one embodiment, the descaling member 53 is implemented as a reamer, which is rotatably mounted to the body 51.
The main body 51 further comprises a splashing prevention liquid spraying assembly 54, the splashing prevention liquid spraying assembly 54 is installed on the main body 51, the splashing prevention liquid spraying assembly 54 is provided with a spraying opening, and the spraying opening is used for spraying splashing prevention liquid on the inner wall of the welding wire installation channel 1101.
The anti-spattering liquid spraying assembly 54 includes a spraying member 541, the spraying opening is formed in the spraying member 541, the spraying member 541 is installed in the main body 51, and the spraying member 541 is used for spraying anti-spattering liquid to the welding wire installation passage 1101. The weld part 11 is prevented from generating splashed particles during use.
The splash-proof liquid spraying assembly 54 further includes a liquid storage component 542, the liquid storage component 542 has a liquid storage cavity for storing the splash-proof liquid, the liquid storage component 542 is mounted on the main body 51, and the liquid storage component 542 is disposed in the spraying component 541 for communication.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.
Claims (10)
1. Welding device with temperature measurement for detecting the temperature of the area to be welded or of at least one welding wire, characterized in that it comprises:
the steering welding assembly comprises a welding part and a steering control part, wherein the welding part is used for welding;
and the temperature control component comprises a temperature measuring part, and the temperature measuring part is arranged on the steering welding assembly and is used for detecting the welding temperature.
2. The temperature-measurable welding apparatus as set forth in claim 1 wherein said temperature control means includes a control member, said temperature measuring means being electrically connected to said control member, said welding member being controllably connected to said control member.
3. The temperature-measurable welding apparatus as set forth in claim 2 wherein said welding member has a wire-receiving passageway for receiving said welding wire.
4. The temperature-measurable welding apparatus as set forth in claim 3 wherein said steering weld assembly further includes a rotatable member rotatably mounted to said weldment, said rotatable member being adapted to rotate said weldment.
5. The temperature measurable welding apparatus as set forth in claim 4 wherein said steering weld assembly further includes a locating member mounted to said weldment for locating a welding location.
6. The temperature-measurable welding apparatus as defined in claim 5, further comprising a wire supply assembly including a wire storage member having a storage cavity for storing said welding wire, said wire storage member being configured to supply said welding wire, said wire storage member being disposed at an end of said rotating member remote from said welding member.
7. The temperature-measurable welding apparatus as set forth in claim 6, wherein said wire supply assembly further includes a wire feeder mounted between said wire storage member and said welding member in a manner enabling said wire to be fed.
8. The temperature-measurable welding apparatus according to claim 7, further comprising a spatial orientation adjustment member, said spatial orientation adjustment member including a Y-axis direction guide mechanism, said steering weld assembly being mounted to said Y-axis direction guide mechanism for adjusting the position of said steering weld assembly in the Y-axis direction.
9. The temperature-measurable welding apparatus as set forth in claim 8 wherein said Y-axis directional guide means includes at least a Y-axis member, a first slide structure and a first link member, said first slide structure being disposed between said Y-axis member and said first link member, said first slide structure being configured to limit sliding movement of said first link member relative to said Y-axis member, said steering weld assembly being disposed on said first link member.
10. The temperature-measurable welding apparatus as set forth in claim 9, wherein said Y-axis member includes a fixed portion and at least one supporting portion for supporting said fixed portion, said first sliding structure is disposed between said fixed portion and said first link member in such a manner as to restrict movement of said first link member, said attitude adjusting means further includes a Z-axis direction guide mechanism mounted between said Y-axis direction guide and said steering weld assembly in such a manner as to adjust attitude of said steering weld assembly in the Z-axis direction, said Z-axis direction guide mechanism includes a Z-axis member, a second sliding structure and a second link member, said second link member is mounted to an end portion of said rotating member remote from said weld member, said second sliding structure is disposed between said Z-axis member and said second link member, the second sliding structure is used for limiting the second connecting piece to slide relative to the Z-axis piece, the three-dimensional direction adjusting component further comprises at least one X-axis direction guiding structure, the X-axis direction guiding structure is arranged at two end parts of the Y-axis direction guiding structure, the X-axis direction guiding structure is used for adjusting the position of the steering welding assembly in the X-axis direction, the X-axis direction guiding structure comprises at least one X-axis piece and a third sliding mechanism, the third sliding mechanism is arranged between the X-axis piece and the Y-axis piece, and the third sliding mechanism is used for limiting the Y-axis piece to slide relative to the X-axis piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123109294.6U CN216938868U (en) | 2021-12-10 | 2021-12-10 | Welding device capable of measuring temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123109294.6U CN216938868U (en) | 2021-12-10 | 2021-12-10 | Welding device capable of measuring temperature |
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| CN216938868U true CN216938868U (en) | 2022-07-12 |
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| CN202123109294.6U Active CN216938868U (en) | 2021-12-10 | 2021-12-10 | Welding device capable of measuring temperature |
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