CN217571229U - Remote controller for electric welding machine - Google Patents

Remote controller for electric welding machine Download PDF

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Publication number
CN217571229U
CN217571229U CN202221015776.7U CN202221015776U CN217571229U CN 217571229 U CN217571229 U CN 217571229U CN 202221015776 U CN202221015776 U CN 202221015776U CN 217571229 U CN217571229 U CN 217571229U
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China
Prior art keywords
welding
switch
pair
arranged below
button switch
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CN202221015776.7U
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Chinese (zh)
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罗国峰
蒋朝
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Chengdu Xinhecheng Technology Co ltd
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Chengdu Xinhecheng Technology Co ltd
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Abstract

A remote controller for an electric welding machine comprises a main body and antennas, wherein the antennas are arranged at two ends of the main body; the front of the main body is provided with an LCD screen, a band switch is arranged below the LCD screen and provided with a power switch, the LCD screen is provided with a current adjusting knob, a voltage adjusting knob and a speed adjusting knob, an operator lifting control button switch is arranged below the band switch and provided with an operator moving button switch, the operator moving button switch is provided with a flux recycling button switch, the operator lifting control button switch is provided with a first roller frame direction button switch, a second roller frame direction button switch is arranged below the first roller frame direction button switch, a flux is fed to the button switch below the second roller frame direction button switch, a pair of welding wire buttons is arranged below the speed adjusting knob, three pairs of machine head posture adjusting buttons are arranged below the welding wire advancing and retreating buttons, a welding button is arranged below the machine head posture adjusting button, and a stop button is arranged on one side of the welding button.

Description

Remote controller for electric welding machine
Technical Field
The utility model relates to a remote controller technical field especially relates to a remote controller for electric welding machine.
Background
When the existing large-scale electric welding machine is used for welding, the welding process is controlled in a wired control mode, the wired control mode is not beneficial to position movement of an operator, and therefore the welding process is monitored and mastered in real time, direct influence is caused on the welding effect, and the existing wireless remote control is short in signal transmission distance, so that limitation is large, and practicability is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a remote controller for electric welding machine to solve above-mentioned prior art not enough, the accessible lower signal transmission distance is 200 meters, conveniently shows various data of electric welding in real time, and then makes things convenient for human-computer interaction and operating personnel to control and command the welding process, has stronger practicality.
In order to realize the purpose of the utility model, the following technologies are adopted:
a remote controller for an electric welding machine comprises a main body and a pair of antennas, wherein the antennas are respectively arranged at two ends of the main body;
the main body is of a cuboid structure, an LCD screen is arranged at one end of the front side of the main body, a band switch is arranged below the LCD screen, a power switch is arranged at one side of the band switch, a current adjusting knob, a voltage adjusting knob and a speed adjusting knob are sequentially arranged at one side of the LCD screen from top to bottom, an operator lifting control button switch is arranged below the band switch, an operator moving button switch is arranged below the operator lifting control button switch, a welding flux recycling button switch is arranged below the operator moving button switch, a first roller frame direction button switch is arranged at one side of the operator lifting control button switch, a second roller frame direction button switch is arranged below the first roller frame direction button switch, a welding flux is fed to the button switch below the second roller frame direction button switch, a pair of welding wire advancing and retreating buttons is arranged below the welding wire advancing and retreating buttons, three pairs of head posture adjusting buttons are arranged below the head adjusting buttons, a welding button is arranged below the welding button, a stopping button is arranged at one side of the welding button, and a quick-stop switch is arranged at one end of the main body;
the current adjusting knob is used for controlling the welding current;
the voltage adjusting knob is used for controlling the welding voltage;
the speed adjusting knob is used for controlling the welding speed;
the wave band switch is used for switching the operations of extension, walking, lifting, rotation and small arm of the manipulator;
the manipulator lifting control button switch is used for controlling the lifting of the manipulator;
the manipulator moving button switch is used for controlling the forward extension and the backward extension of the manipulator;
the flux recovery toggle switch is used for controlling the start and stop of flux recovery;
the second roller carrier direction button switch and the first roller carrier direction button switch are used for controlling the forward rotation and the reverse rotation of the roller carrier;
the flux feeding button switch is used for starting and stopping flux feeding;
the pair of welding wire advance and retreat buttons are used for controlling the advance and retreat operation of the welding wire;
the three pairs of machine head posture adjusting buttons are used for controlling the up and down, left and right, advancing and retreating operations of the machine head;
the welding button is used for controlling the operation of welding start;
the stop button is used to control the operation of welding stop.
Furthermore, the characters of welding current are marked below the current adjusting knob, the characters of welding voltage are marked below the voltage adjusting knob, and the characters of advancing and retreating speed are marked below the speed adjusting knob.
Furthermore, words of 'telescopic', 'walking', 'lifting', 'rotating' and 'forearm' are marked above the band switch from left to right, and words of 'manipulator' are marked above the words of 'telescopic', 'walking', 'lifting', 'rotating' and 'forearm'.
Furthermore, the upper part of the operating machine lifting control button switch is marked with an ascending character, and the lower part of the operating machine lifting control button switch is marked with a descending character;
the upper side and the lower side of the second roller frame direction button switch and the first roller frame direction button switch are marked with characters of 'forward rotation' and 'reverse rotation';
the upper part of the flux recovery toggle switch is marked with a character of 'welding machine recovery', and the lower part of the flux recovery toggle switch is marked with a character of 'stop';
the upper part of the solder feeding button switch is marked with a character of 'solder feeding', and the lower part of the solder feeding button switch is marked with a character of 'stopping'.
Furthermore, a welding wire is marked at the upper position between the pair of welding wire advancing and retreating buttons, an advancing character is marked below one of the welding wire advancing and retreating buttons, and a retreating character is marked below the other welding wire advancing and retreating button.
Further, the antenna includes and installs in a pair of connecting rod of main part tip through the nut, the tip of connecting rod has all taken shape the elbow, the other end of elbow has all taken shape first sleeve pipe, a pair of first spacing groove has been seted up on the first sheathed tube pipe wall, the second sleeve pipe has all been worn in the first sleeve pipe, the sheathed tube tip of second is equipped with a pair of first spacing arch, first spacing arch is worn in first spacing inslot respectively, a pair of second spacing groove has been seted up on the sheathed tube wall of second, the second sleeve pipe endotheca is equipped with the loop bar, the tip of loop bar is equipped with a pair of spacing protruding, spacing protruding all is worn in the second spacing inslot, the tip of loop bar is equipped with the antenna head, the tip of loop bar is equipped with locking mechanical system.
Furthermore, a plurality of grooves are formed in the roots of the second sleeve and the sleeve rod, copper spring pieces are arranged in the grooves, and the outer walls of the copper spring pieces are respectively in contact with the inner walls of the first sleeve and the second sleeve.
Further, the locking mechanism comprises a rotating sleeve which is rotatably arranged at the end part of the loop bar, a pair of convex plates are symmetrically arranged on the rotating sleeve, rotating side plates are hinged to two sides of each convex plate, an end plate is arranged at the other end of each rotating side plate, a spring pin penetrates through each end plate, a disc is arranged at the outer side end of each spring pin, a positioning column is arranged on each disc, an end disc is arranged at the other end of each positioning column, a spring is sleeved at the inner side end of each spring pin and located at the inner side of each end plate, clamping grooves are formed in the upper sides of the roots of the rotating side plates, a pair of lower ejector pins are arranged on the convex plates in an upward extending mode, lower ejector springs are sleeved at the upper ends of the lower ejector pins, lower ejector plates are arranged at the lower ends of the lower ejector springs, inserting plates are arranged at two ends of the lower ejector plates in an downward extending mode, a pair of outward extending plates is symmetrically arranged at the end part of the first sleeve, and U-shaped grooves are formed in an opening mode at the outer side ends of the outward extending plates.
Furthermore, a middle connecting rod is arranged between the elbows, and a T-shaped seat made of rubber is arranged on the middle connecting rod.
The technical scheme has the advantages that:
the utility model provides a signal transmission distance is 200 meters under the accessible, conveniently shows various data of electric welding machine in real time, and then makes things convenient for human-computer interaction and operating personnel to control and master the welding process, supports simultaneously that 2 way 5K ohm keeps apart the output of digital potentiometer, realizes electric welding current, voltage remote control adjusts; 2-path 0-10V analog quantity voltage output is supported, and the speed of 2 frequency converters can be controlled to be remotely controlled and adjusted; the output of 25 paths of 250V/3A relays is supported, and the contactor can be controlled remotely; through 1 way normally open scram relay output conveniently carry out scram control operation, strengthened signal transmission's stability and accuracy nature simultaneously through the antenna, also prolonged the transmission distance of signal simultaneously, have stronger practicality.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 shows a perspective view of one embodiment.
Figure 2 shows a front view of one of the embodiments.
Fig. 3 shows an enlarged view at a.
Fig. 4 shows an enlarged view at B.
Fig. 5 shows a cross-sectional view at C-C.
Fig. 6 shows an enlarged view at D.
Detailed Description
As shown in fig. 1 to 6, a remote controller for an electric welding machine includes a main body 1 and a pair of antennas 2, wherein the antennas 2 are respectively disposed at two ends of the main body 1. The main body 1 is of a cuboid structure, an LCD screen 10 is arranged at one end of the front face of the main body 1, a band switch 14 is arranged below the LCD screen 10, a power switch 15 is arranged at one side of the band switch 14, a current adjusting knob 11, a voltage adjusting knob 12 and a speed adjusting knob 13 are sequentially arranged at one side of the LCD screen 10 from top to bottom in a row, an operator lifting control button switch 16 is arranged below the band switch 14, an operator moving button switch 18 is arranged below the operator lifting control button switch 16, a flux recycling button switch 190 is arranged below the operator moving button switch 18, a first roller frame direction button switch 17 is arranged at one side of the operator lifting control button switch 16, a second roller frame direction button switch 19 is arranged below the first roller frame direction button switch 17, a flux feeding button 191 is arranged below the second roller frame direction button switch 19, a pair of welding wire buttons 30 is arranged below the speed adjusting knob 13, three pairs of head forward and backward attitude adjusting buttons 32 are arranged below the welding head attitude adjusting button 32, a stopping button 38 is arranged at one side of the welding button 39, and a stop button 38 is arranged at one end of the main body 1. The current adjusting knob 11 is used for controlling the welding current; the voltage adjusting knob 12 is used for controlling the welding voltage; the speed adjusting knob 13 is used for controlling the welding speed; the waveband switch 14 is used for switching the operations of extension, walking, lifting, rotation and small arm of the manipulator; the manipulator lifting control button switch 16 is used for controlling the lifting of the manipulator; the manipulator moving button switch 18 is used for controlling the forward extension and backward extension of the manipulator; the flux recovery toggle 190 is used for controlling the start and stop of flux recovery; the second roller carrier direction button switch 19 and the first roller carrier direction button switch 17 are used for controlling the forward rotation and the reverse rotation of the roller carrier; the flux feeding toggle 191 is used for start-stop control of flux feeding; a pair of welding wire advance and retreat buttons 30 for controlling the advance and retreat operations of the welding wire; three pairs of head attitude adjustment buttons 32 are used for controlling the up and down, left and right, and forward and backward operations of the head; a welding button 39 for controlling the operation of welding start; the stop button 38 is used to control the operation of the welding stop. The characters of welding current are marked below the current adjusting knob 11, welding voltage is marked below the voltage adjusting knob 12, and advancing and retreating speed is marked below the speed adjusting knob 13. The words of "telescoping", "walking", "lifting", "rotating" and "forearm" are marked above the band switch 14 from left to right, and the words of "manipulator" is marked above the words of "telescoping", "walking", "lifting", "rotating" and "forearm". The upper side of the operating device elevation control button switch 16 is marked with an "ascending" character, and the lower side of the operating device elevation control button switch 16 is marked with a "descending" character. The upper and lower sides of the second roller frame direction button switch 19 and the first roller frame direction button switch 17 are marked with characters of 'forward rotation' and 'reverse rotation'. The upper side of the flux recovery toggle 190 is marked with a "welder recovery" character, and the lower side of the flux recovery toggle 190 is marked with a "stop" character. The upper side of the solder feeding toggle 191 is marked with a "solder feeding" character, and the lower side of the solder feeding toggle 191 is marked with a "stop" character. A "welding wire" is marked at an upper position between the pair of welding wire advancing and retracting buttons 30, an "advancing" character is marked below one of the welding wire advancing and retracting buttons 30, and an "retreating" character is marked below the other welding wire advancing and retracting button 30.
The current adjusting knob 11, the voltage adjusting knob 12, the speed adjusting knob 13, the wave band switch 14, the operator lifting control button switch 16, the second roller frame direction button switch 19, the first roller frame direction button switch 17, the flux recovery button switch 190, the flux feeding button switch 191, the welding wire advancing and retreating button 30 and the machine head posture adjusting button 32 are used for identifying characters, so that the operation of an operator is facilitated, the threshold during the operation is reduced, the misoperation during the operation is avoided, the operation accuracy is improved, wherein the machine head posture adjusting button 32 is marked with 'advancing', 'retreating', 'upper', 'lower', 'left' and 'right', and the posture of the machine head is further conveniently adjusted through the machine head posture adjusting button 32.
Wherein, control of whole welding process is conveniently carried out through a plurality of control button and knob. The current adjusting knob 11 is convenient for adjusting the welding current; the voltage adjusting knob 12 is convenient for adjusting the welding voltage; the speed adjusting knob 13 is convenient for adjusting the welding speed; the band switch 14 is convenient for switching the telescopic mode, the walking mode, the lifting mode, the rotating mode and the forearm mode of the manipulator; the operating machine lifting control button switch 16 is convenient for controlling the lifting of the operating machine; the operator moving button switch 18 is convenient for controlling the forward and backward operation of the operator; the flux recovery toggle 190 is convenient for controlling the start and stop operation of flux recovery; the second roller frame direction button switch 19 and the first roller frame direction button switch 17 are convenient for controlling the forward rotation and the reverse rotation of the roller frame, thereby facilitating the forward and backward operation during welding; the flux feeding toggle 191 facilitates control of starting and stopping of flux feeding; a pair of welding wire advance and retreat buttons 30 facilitate the operation of controlling the advance and retreat of the welding wire; the three pairs of machine head posture adjusting buttons 32 are convenient for controlling the up and down, left and right, advancing and retreating operations of the machine head; the welding button 39 facilitates control of the start of welding; a stop button 38 facilitates control of the stop of the weld.
Antenna 2 includes and installs in a pair of connecting rod 20 of 1 tip of main part through the nut, the tip of connecting rod 20 has all been formed with elbow 21, the other end of elbow 21 has all been formed with first sleeve 25, a pair of first spacing groove 250 has been seted up on the pipe wall of first sleeve 25, second sleeve 26 has all been worn in the first sleeve 25, the tip of second sleeve 26 is equipped with a pair of first spacing arch 261, first spacing arch 261 wears respectively in first spacing groove 250, a pair of second spacing groove 260 has been seted up on the pipe wall of second sleeve 26, set pole 27 has been established to second sleeve 26 endotheca, the tip of set pole 27 is equipped with a pair of spacing protruding 270, spacing protruding 270 all wears in second spacing groove 260, the tip of set pole 27 is equipped with antenna head 28, the tip of set pole 27 is equipped with locking mechanical system 4. The root parts of the second sleeve 26 and the loop bar 27 are provided with a plurality of grooves 60, copper spring pieces are arranged in the grooves 60, and the outer walls of the copper spring pieces are respectively contacted with the inner walls of the first sleeve 25 and the second sleeve 26. The locking mechanism 4 comprises a rotating sleeve 40 rotatably arranged at the end part of the sleeve rod 27, the rotating sleeve 40 is symmetrically provided with a pair of convex plates 41, two sides of each convex plate 41 are hinged with a rotating side plate 42, the other end of each pair of rotating side plates 42 is provided with an end plate 43, a spring pin 44 penetrates through each end plate 43, the outer side end of each spring pin 44 is provided with a disc 46, each disc 46 is provided with a positioning column 47, the other end of each positioning column 47 is provided with an end disc 48, the inner side end of each spring pin 44 is sleeved with a spring 45, each spring 45 is positioned at the inner side of each end plate 43, the upper side of the root part of each rotating side plate 42 is provided with a clamping groove 420, each convex plate 41 is provided with a pair of lower ejector pins 49 in an upward extending mode, the upper end of each lower ejector pin 49 is sleeved with a lower ejector spring 50, the lower end of each lower ejector spring 50 is provided with a lower top plate 51, the two ends of each lower ejector plate 51 are provided with inserting plates in a downward extending mode, each lower ejector pin 49 penetrates through each lower top plate 51, the end part of the first sleeve 25 is symmetrically provided with a pair of outward extending plates 251, and the outer ends of the outward extending plates are provided with a U-shaped groove 252 in an opening mode. A middle connecting rod 22 is arranged between the elbows 21, and a T-shaped seat 24 made of rubber is arranged on the middle connecting rod 22.
Wherein, the T-shaped seat 24 made of rubber can prevent the front surface of the remote controller from directly contacting with the ground when the remote controller falls, thereby preventing the LCD screen 10 from being cracked.
The arrangement of the copper spring piece can improve the connection effect between the first sleeve 25 and the second sleeve 26 and between the second sleeve 26 and the sleeve rod 27, so that the stability of signal transmission is improved.
The arrangement of the first limiting protrusion 261, the first limiting groove 250, the limiting protrusion 270 and the second limiting groove 260 improves the stability of connection between the first sleeve 25 and the second sleeve 26 and between the second sleeve 26 and the loop bar 27, and avoids the phenomenon of disconnection caused by excessive elongation.
Wherein, the locking mechanical system 4 that sets up when antenna 2 shortens, conveniently carries out the fixed of loop bar 27 to the convenience is adjusted according to actual conditions, avoids antenna 2 to shorten the back simultaneously, the phenomenon that antenna 2 lengthens appears, and then causes the influence to the use of remote controller.
Wherein, locking mechanical system 4 is when locking, wear the reference column 47 in the U-shaped groove 252 to spring 45 is the state of compression this moment, and guarantee the stability after connecting through this kind of mode, consequently set up protruding board 41 with reference column 47 ground of rotating simultaneously in order to connect conveniently, and in order to fix a position rotating side plate 42, consequently set up corresponding picture peg and draw-in groove 420, and when rotating the fixed of curb plate 42, insert the picture peg in draw-in groove 420, conveniently carry out the state locking through this kind of mode, and improved the stability after the locking.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (6)

1. A remote controller for an electric welding machine is characterized by comprising a main body (1) and a pair of antennas (2), wherein the antennas (2) are respectively arranged at two ends of the main body (1);
the main body (1) is of a cuboid structure, an LCD screen (10) is arranged at one end of the front face of the main body (1), a band switch (14) is arranged below the LCD screen (10), a power switch (15) is arranged at one side of the band switch (14), a current adjusting knob (11) is sequentially arranged at one side of the LCD screen (10) from top to bottom, the welding machine comprises a voltage adjusting knob (12) and a speed adjusting knob (13), an operator lifting control toggle switch (16) is arranged below a waveband switch (14), an operator moving toggle switch (18) is arranged below the operator lifting control toggle switch (16), a welding flux recovery toggle switch (190) is arranged below the operator moving toggle switch (18), a first roller frame direction toggle switch (17) is arranged on one side of the operator lifting control toggle switch (16), a second roller frame direction toggle switch (19) is arranged below the first roller frame direction toggle switch (17), a welding flux feeding toggle switch (191) is arranged below the second roller frame direction toggle switch (19), a pair of welding wire advancing and retreating buttons (30) is arranged below the speed adjusting knob (13), three pairs of machine head posture adjusting buttons (32) are arranged below the welding wire advancing and retreating buttons (30), a welding button (39) is arranged below the machine head posture adjusting buttons (32), and a stop button (38) is arranged on one side of the welding button (39).
2. The remote controller for electric welding machine according to claim 1, wherein:
the current adjusting knob (11) is used for controlling the welding current;
the voltage adjusting knob (12) is used for controlling the size of welding voltage;
the speed adjusting knob (13) is used for controlling the welding speed;
the wave band switch (14) is used for switching the operations of extension, walking, lifting, rotation and small arm of the manipulator;
the operator lifting control button switch (16) is used for controlling the lifting of the operator;
the manipulator moving button switch (18) is used for controlling the forward extension and the backward extension of the manipulator;
the flux recovery toggle (190) is used for controlling the start and stop of flux recovery;
the second roller carrier direction button switch (19) and the first roller carrier direction button switch (17) are used for controlling the forward rotation and the reverse rotation of the roller carrier;
the flux feeding toggle (191) is used for starting and stopping control of flux feeding;
a pair of welding wire advance and retreat buttons (30) for controlling the advance and retreat operations of the welding wire;
three pairs of machine head posture adjusting buttons (32) are used for controlling the up and down, left and right, and the forward and backward operations of the machine head;
a welding button (39) for controlling the operation of welding start;
a stop button (38) is used to control the operation of the welding stop.
3. The remote controller for the electric welding machine according to claim 1, wherein the antenna (2) comprises a pair of connecting rods (20) mounted at the end of the main body (1) through nuts, elbows (21) are formed at the ends of the connecting rods (20), first sleeves (25) are formed at the other ends of the elbows (21), a pair of first limiting grooves (250) are formed in the tube walls of the first sleeves (25), second sleeves (26) are penetrated in the first sleeves (25), a pair of first limiting bulges (261) are arranged at the ends of the second sleeves (26), the first limiting bulges (261) are respectively penetrated in the first limiting grooves (250), a pair of second limiting grooves (260) are formed in the tube walls of the second sleeves (26), loop bars (27) are sleeved in the second sleeves (26), a pair of limiting bulges (270) are arranged at the ends of the loop bars (27), the limiting bulges (270) are all penetrated in the second limiting grooves (260), antenna heads (28) are arranged at the ends of the loop bars (27), and locking mechanisms (4) are arranged at the ends of the loop bars (27).
4. The remote controller for electric welding machine according to claim 3, wherein the second sleeve (26) and the sleeve rod (27) are provided with a plurality of grooves (60) at the root portions thereof, the grooves (60) are provided with copper spring pieces, and the outer walls of the copper spring pieces are respectively in contact with the inner walls of the first sleeve (25) and the second sleeve (26).
5. The remote controller for the electric welding machine as claimed in claim 3, wherein the locking mechanism (4) comprises a rotating sleeve (40) rotatably disposed at the end of the loop bar (27), the rotating sleeve (40) is provided with a pair of convex plates (41) in a symmetrical structure, two sides of each convex plate (41) are hinged with a rotating side plate (42), the other end of each pair of rotating side plates (42) is provided with an end plate (43), a spring pin (44) penetrates through the end plate (43), the outer side end of each spring pin (44) is provided with a disc (46), a positioning column (47) is arranged on each disc (46), the other end of each positioning column (47) is provided with an end disc (48), the inner side end of each spring pin (44) is sleeved with a spring (45), each spring (45) is located at the inner side of the end plate (43), the upper side of the root of each rotating side plate (42) is provided with a clamping groove (420), each convex plate (41) is provided with a pair of lower top pins (49) extending upwards, the upper end of each lower top pin (49) is sleeved with a lower top spring (50), the lower end of each lower top plate (51) is provided with a pair of lower top plate (51), and each lower top plate (251) extends outwards and a pair of a symmetrical U-shaped groove (251) is provided with a pair of a corresponding upper end groove (251).
6. The remote control for electric welding machine according to claim 3, wherein a middle link (22) is provided between the elbows (21), and a T-shaped seat (24) made of rubber is provided on the middle link (22).
CN202221015776.7U 2022-04-29 2022-04-29 Remote controller for electric welding machine Active CN217571229U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221015776.7U CN217571229U (en) 2022-04-29 2022-04-29 Remote controller for electric welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221015776.7U CN217571229U (en) 2022-04-29 2022-04-29 Remote controller for electric welding machine

Publications (1)

Publication Number Publication Date
CN217571229U true CN217571229U (en) 2022-10-14

Family

ID=83548390

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221015776.7U Active CN217571229U (en) 2022-04-29 2022-04-29 Remote controller for electric welding machine

Country Status (1)

Country Link
CN (1) CN217571229U (en)

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