CN112045286A

CN112045286A - Protection of electric welding clamp and automatic change equipment of welding rod

Info

Publication number: CN112045286A
Application number: CN202010980072.2A
Authority: CN
Inventors: 华怀艺
Original assignee: Fuzhou Changle Meister Electronic Technology Co ltd
Current assignee: Fuzhou Changle Meister Electronic Technology Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2020-12-08

Abstract

The invention discloses protection of an electric welding clamp and automatic replacement equipment of a welding rod, which comprises a placement block, wherein a placement cavity with a forward opening and a backward opening is arranged in the placement block, a replacement mechanism is arranged in the placement cavity and comprises a connecting plate fixedly connected with the rear end surface of the placement cavity, an electric welding clamp fixing block fixedly connected with the inner wall of the lower side of the placement cavity is arranged on the inner wall of the lower side of the placement cavity, and a lower electric welding clamp fixedly connected with the left side of the electric welding clamp fixing block is arranged on the left side of the electric welding clamp fixing block.

Description

Protection of electric welding clamp and automatic change equipment of welding rod

Technical Field

The invention relates to the field of welding rods, in particular to a device for protecting an electric welding clamp and automatically replacing a welding rod.

Background

The electrode holder is a tool for electric welding, is shaped like a clamp, is a device for holding an electrode to carry out electrode and arc welding, and has the working principle of holding the electrode and conducting welding current during welding. The hand-held insulating tool is matched with an electric arc welding machine for use, is used for clamping and operating a welding rod during manual electric arc welding and ensures the electric connection with the welding rod, but when welding, because of the occurrence of strong light, the mask has to be held by the other hand to shield the eyes, so as to prevent the strong light from damaging the eyes, and during welding, the generated splashed objects can not be splashed on the hands by a small degree and are damaged by hands, and after one welding rod is used, the welding rod is often required to be replaced additionally, so that the time is wasted.

Disclosure of Invention

The invention aims to provide automatic equipment for protecting an electric welding clamp and replacing a welding rod, and solves the problems that an eye shielding mask needs to be held by the other hand during welding, splashed objects generated by electric welding are splashed onto the hand, the welding rod needs to be replaced additionally and the like.

The invention is realized by the following technical scheme.

The invention relates to automatic replacement equipment for protection and welding rods of an electric welding clamp, which comprises a placement block, wherein a placement cavity with a forward opening and a backward opening is arranged in the placement block, a replacement mechanism is arranged in the placement cavity and comprises a connecting plate fixedly connected with the rear end surface of the placement cavity, an electric welding clamp fixing block fixedly connected with the inner wall of the lower side of the placement cavity is arranged on the inner wall of the lower side of the placement cavity, a lower electric welding clamp fixedly connected with the left side of the electric welding clamp fixing block is arranged on the left side of the electric welding clamp fixing block, a rotating torsion spring fixedly connected with the upper end surface of the electric welding clamp fixing block is arranged on the electric welding clamp fixing block, an upper clamp rotating block rotatably connected with the electric welding clamp fixing block is arranged on the upper clamp rotating block, an upper electric welding clamp fixedly connected with the lower end surface of the upper, the welding device is characterized in that a fixedly connected starting motor is arranged on the connecting plate, a rotatably connected starting winding shaft is arranged on the starting motor, a fixedly connected starting reel is arranged on the starting winding shaft, a fixedly connected first starting switch is arranged on the right end face of the starting motor, a fixedly connected second starting switch is arranged on the right end face of the starting motor, a fixedly connected third starting switch is arranged on the left end face of the upper side electric welding clamp, a fixedly connected fixed block is arranged on the inner wall of the left side of the placing cavity, a fixed cavity with a leftward opening is arranged in the fixed block, a fixedly connected starting block is arranged on the inner wall of the left side of the placing cavity, a fixedly connected fixed spring is simultaneously arranged on the inner wall of the left side of the placing cavity, a slidably connected conveying sliding block is arranged in the fixed cavity, the conveying sliding block is fixedly connected with the fixed spring, the starting chute and the starting block are positioned on the same horizontal plane, the right end face of the conveying sliding block is provided with a fixedly connected conveying fixed block, the conveying fixed block is provided with a conveying fixed cavity with a leftward opening, the inner wall of the rear side of the conveying fixed cavity is provided with a fixedly connected clamping motor, the clamping motor is fixedly connected with the conveying sliding block, the right end face of the clamping motor is provided with a rotatably connected clamping motor shaft, the clamping motor shaft is provided with a fixedly connected clamping reel, the right end face of the conveying fixed block is provided with a fixedly connected clamping plate, the clamping plate is provided with two vertically symmetrical clamping plates relative to the conveying fixed block, the clamping plate is provided with a clamping groove with a downward opening, a fixedly connected clamping spring is arranged in the clamping groove, the clamping groove is internally provided with a clamping plate in sliding connection, and the clamping plate is fixedly connected, the welding rod conveying device is characterized in that a fixedly connected welding rod conveying rail is arranged on the connecting plate, a plurality of fixedly connected welding rod conveying fixed blocks are simultaneously arranged on the connecting plate, a welding rod conveying groove is formed between each welding rod conveying fixed block and the corresponding welding rod conveying rail, welding rods which are connected in a sliding mode are arranged in the corresponding welding rod conveying groove, a plurality of welding rods are arranged in the corresponding welding rod conveying groove, the lower side electric welding clamp is fixedly connected with the inner wall of the lower side of the placement cavity, a fixedly connected collecting block is simultaneously arranged on the inner wall of the lower side of the placement cavity, a collecting cavity with an upward opening is arranged on the corresponding collecting block, and the collecting; the rear side of the placement cavity is provided with a protection mechanism, the protection mechanism comprises a fixed block connecting block fixedly connected with the electric welding clamp fixed block, the fixed block connecting block is provided with a fixedly connected hand protection fixed block, the fixed block connecting block is simultaneously provided with an upper opening and closing shaft in rotary connection, the upper opening and closing shaft is provided with a fixedly connected opening and closing torsion spring, the upper opening and closing shaft is provided with an upper opening and closing plate in rotary connection, the upper opening and closing plate is provided with two upper opening and closing plates which are vertically symmetrical relative to the electric welding clamp fixed block, a hand protection chute is arranged in the middle of the hand protection fixed block, a hand protection sliding block in sliding connection is arranged in the hand protection chute, a fixedly connected hand protection spring is arranged on the hand protection sliding block, a hand protection chute is arranged in the middle of the hand protection chute, and an opening and closing, be equipped with fixed connection's rotation torsional spring in the axis of rotation that opens and shuts, be equipped with the upside open-close plate that rotates the connection on the rotation torsional spring, be equipped with the ascending lens spout of opening on the upside open-close plate, lens spout downside inner wall is equipped with fixed connection's lens sliding spring, be equipped with sliding connection's eye protection lens in the lens spout, fixed block connecting block left side is equipped with fixed connection's catch bar, electric welding clamp fixed block up end is equipped with fixed connection's hand protection spring, the hand protection spring with upside clamp rotating block fixed connection.

Preferably, change mechanism still include in the welding rod conveyer trough with downside electric welding clamp fixed connection's welding rod push motor, be equipped with the welding rod that rotates the connection on the welding rod push motor and promote the spool, the welding rod promotes the reel that is equipped with fixed connection's welding rod on the spool, welding rod push motor right side is equipped with fixed connection's welding rod and promotes the spring, be equipped with sliding connection's welding rod catch plate in the welding rod conveyer trough, the welding rod catch plate with welding rod promotes spring fixed connection.

Preferably, the protection mechanism further comprises a lower side opening and closing shaft fixedly connected with the fixed block connecting block, a lower side torsion spring fixedly connected with the lower side opening and closing shaft is arranged on the lower side opening and closing shaft, and a lower side opening and closing plate rotatably connected with the lower side opening and closing shaft is arranged on the lower side opening and closing shaft.

Preferably, the start reel with carry the slider through winding line fixed connection, the centre gripping reel with the grip block passes through winding line fixed connection, the welding rod promote the reel with the welding rod promotes the board and passes through winding line fixed connection.

The invention has the beneficial effects that: the welding electrode clamp is provided with the protection equipment, so that a hand can be held after the hand is inserted, the hand is protected, the shading lens is arranged, strong light is prevented from irradiating eyes, the other hand is released, the waste welding electrode can be collected after the welding electrode is used, and a new welding electrode can be replaced.

Drawings

In order to more clearly illustrate the embodiments of the 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 only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the embodiment of the present invention in the direction of A-A in FIG. 1;

FIG. 3 is a schematic view of the embodiment of the present invention in the direction B-B in FIG. 2;

FIG. 4 is a schematic view of the embodiment of the present invention in the direction of C-C in FIG. 2.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

With reference to the accompanying drawings 1-4, the automatic replacement device for the protection and welding rod of the electric welding clamp comprises a placement block 10, a placement cavity 11 with an opening facing backwards forward and an opening facing backwards is arranged in the placement block 10, a replacement mechanism 70 is arranged in the placement cavity 11, the replacement mechanism 70 comprises a connecting plate 61 fixedly connected with the rear end face of the placement cavity 11, an electric welding clamp fixing block 48 fixedly connected with the inner wall of the lower side of the placement cavity 11 is arranged on the inner wall of the lower side of the placement cavity 11, a lower electric welding clamp 20 fixedly connected with the left side of the electric welding clamp fixing block 48 is arranged on the left side of the electric welding clamp fixing block 48, a rotary torsion spring 56 fixedly connected with the upper end face of the electric welding clamp fixing block 48 is arranged on the upper clamp rotating block 54, an upper electric welding clamp 27 fixedly connected with the upper electric welding clamp head 28 is arranged on the lower end, the left side of the upper side electric welding clamp 27 is provided with a fixedly connected third starting switch 25, the connecting plate 61 is provided with a fixedly connected starting motor 21, the starting motor 21 is provided with a rotatably connected starting winding shaft 23, the starting winding shaft 23 is provided with a fixedly connected starting reel 22, the right end face of the starting motor 21 is provided with a fixedly connected first starting switch 24, the right end face of the starting motor 21 is provided with a fixedly connected second starting switch 26, the left end face of the upper side electric welding clamp 27 is provided with a fixedly connected third starting switch 25, the left side inner wall of the settling cavity 11 is provided with a fixedly connected fixed block 14, the fixed block 14 is internally provided with a leftward opening fixed cavity 15, the left side inner wall of the settling cavity 11 is provided with a fixedly connected starting block 16, the left side inner wall of the settling cavity 11 is simultaneously provided with a fixedly connected fixed spring 17, and the fixed cavity 15 is internally provided with a sliding connection conveying, the conveying sliding block 19 is fixedly connected with the fixed spring 17, a starting sliding groove 18 with a leftward opening is arranged in the conveying sliding block 19, the starting sliding groove 18 and the starting block 16 are positioned on the same horizontal plane, a conveying fixed block 29 fixedly connected with the right end face of the conveying sliding block 19 is arranged on the right end face of the conveying sliding block 19, a conveying fixed cavity 31 with a leftward opening is formed in the conveying fixed block 29, a fixedly connected clamping motor 30 is arranged on the inner wall of the rear side of the conveying fixed cavity 31, the clamping motor 30 is fixedly connected with the conveying sliding block 19, a clamping motor shaft 32 rotatably connected with the right end face of the clamping motor 30 is arranged on the right end face of the clamping motor shaft 32, a fixedly connected clamping reel 33 is arranged on the right end face of the conveying fixed block 29, a clamping plate 34 fixedly connected with the right end face of the conveying fixed block 29 is provided with two clamping plates which are symmetrical up, a clamping spring 36 fixedly connected with the clamping groove 35 is arranged in the clamping groove 35, a clamping plate 62 in sliding connection with the clamping groove 35 is arranged in the clamping groove, the clamping plate 62 is fixedly connected with the clamping spring 36, the connecting plate 61 is provided with a fixedly connected welding rod conveying track 39, the connecting plate 61 is also provided with a fixedly connected welding rod conveying fixed block 41, a welding rod conveying groove 40 is arranged between the welding rod conveying fixed block 41 and the welding rod conveying track 39, the welding rod conveying groove 40 is internally provided with a plurality of welding rods 38 which are connected in a sliding way, the welding rods 38 are arranged in the welding rod conveying groove 40, the lower side electric welding clamp 20 is fixedly connected with the inner wall of the lower side of the placing cavity 11, the inner wall of the lower side of the placing cavity 11 is also provided with a fixedly connected collecting block 12, a collecting cavity 13 with an upward opening is formed in the collecting block 12, and the collecting block 12 is fixedly connected with the lower side electric welding clamp 20; the utility model discloses a welding clamp fixing block 48, including fixed block connecting block 63, be equipped with fixed connection's hand protection fixed block 50 on the fixed block connecting block 63, be equipped with the upside switching shaft 66 that rotates the connection on the fixed block connecting block 63, be equipped with the fixed connection on the fixed block connecting block 63 simultaneously, be equipped with the switching torsional spring 65 of fixed connection on the switching shaft 66 of upper side, be equipped with the upside switching plate 57 that rotates the connection on the switching shaft 66 of upper side, upside switching plate 57 is equipped with two of longitudinal symmetry about welding clamp fixed block 48, be equipped with hand protection spout 51 in the middle of the hand protection fixed block 50, be equipped with sliding connection's hand protection slider 53 in the hand protection spout 51, be equipped with fixed connection's hand protection spring 52 on the hand protection slider 53, be equipped with hand protection spout 51 in the middle of hand protection spout 51, be equipped with fixed connection's the axis of rotation 55 that opens and shuts simultaneously on fixed block connecting block 63, be equipped with fixed connection's rotation torsional spring 56 on the axis of rotation 55 that opens and shuts, be equipped with the upside open-close plate 57 that rotates the connection on the rotation torsional spring 56, be equipped with the ascending lens spout 59 of opening on the upside open-close plate 57, the lens spout 59 downside inner wall is equipped with fixed connection's lens sliding spring 60, be equipped with sliding connection's eye protection lens 58 in the lens spout 59, fixed block connecting block 63 left side is equipped with fixed connection's catch bar 64, the welding clamp fixed block 48 up end is equipped with fixed connection's hand protection spring 52, hand protection spring 52 with upside clamp rotating block 54 fixed connection.

Beneficially, change mechanism 70 still includes in welding rod conveyer trough 40 with welding rod pushing motor 44 of downside welding clamp 20 fixed connection, be equipped with the welding rod that rotates the connection and promote spool 43 on the welding rod pushing motor 44, the welding rod promotes the reel 42 that is equipped with fixed connection's welding rod on the spool 43, welding rod pushing motor 44 right side is equipped with fixed connection's welding rod and promotes spring 46, be equipped with sliding connection's welding rod push plate 47 in the welding rod conveyer trough 40, welding rod push plate 47 with welding rod pushes spring 46 fixed connection.

Beneficially, the protection mechanism 71 further includes a lower opening and closing shaft 69 fixedly connected to the fixed block connecting block 63, a lower torsion spring 68 fixedly connected to the lower opening and closing shaft 69 is provided on the lower opening and closing shaft 69, and a lower opening and closing plate 67 rotatably connected to the lower opening and closing shaft 69 is provided on the lower opening and closing shaft 69.

Advantageously, the starting reel 22 is fixedly connected to the feed shoe 19 by a winding wire, the clamping reel 33 is fixedly connected to the clamping plate 62 by a winding wire, and the welding wire pushing reel 42 is fixedly connected to the welding wire pushing plate 47 by a winding wire.

In the initial state, the clamping spring 36 is in the normal state, and can clamp the welding rod 38, the welding rod pushing spring 46 is in the compressed state, the fixing spring 17 is in the normal state, the third starting switch 25 is located between the first starting switch 24 and the second starting switch 26, the hand protecting spring 52 is in the normal state, the upper side opening plate 57 is in the horizontal state, and the clamping plate 34 extends into the welding rod conveying groove 40 to shield the other welding rods 38.

Application method

When the hand protection device is used, the upper side opening plate 57 and the lower side opening plate 67 are pulled, so that the upper side opening plate 57 and the lower side opening plate 67 are opened, the hand protection sliding block 53 moves upwards due to the elastic action of the hand protection spring 52, the distance between the hand protection sliding grooves 51 is increased, the hand is deeply inserted into the hand protection sliding grooves 51, the electric welding clamp fixing block 48 is held, the upper side opening plate 57 and the lower side opening plate 67 are loosened, the lower side opening plate 67 and the upper side opening plate 57 return to the horizontal position due to the torsion action of the opening and closing torsion spring 65 and the lower side torsion spring 68, the hand protection sliding block 53 moves upwards, the hand can be clamped in the hand protection sliding grooves 51, sparks and the like generated in the welding process cannot splash onto the hand to cause injury, and meanwhile, the upper side opening plate 57 is in the horizontal position, the pushing rod 64 pushes the eye protection lens 58 out of the lens sliding groove 59, so as to block the bright light generated by electric welding, and because of the light transmittance of the eye protection lens 58, the welding position can be seen clearly, so as to function as a light shield, when the welding rod 38 clamped by the upper side welding clamp head 28 and the lower side welding clamp 20 is about to use light, because the clamping plate 62 is clamped on the welding rod 38 at the same time, the upper side clamp rotating block 54 is held by hand, the upper side clamp rotating block 54 rotates counterclockwise around the opening and closing rotating shaft 55, the rotating torsion spring 56 is compressed, the upper side welding clamp 27 moves upward, the upper side welding clamp 27 drives the upper side welding clamp head 28 to move upward, the upper side welding clamp head 28 and the lower side welding clamp 20 do not clamp the welding rod 38 any more, at this time, the clamping plate 62 clamps the welding rod 38, and at the same time, the upper electric welding tongs 27 drives the third start switch 25 to move upward, the third start switch 25 contacts the first start switch 24, the start motor 21 is started, the start motor 21 drives the start spool 23 to rotate, the start spool 23 drives the start reel 22 to rotate, the start reel 22 rotates clockwise, the winding wire on the start reel 22 and the conveying slider 19 is tightened, the conveying slider 19 moves leftward, the conveying slider 19 drives the clamping motor 30 to move leftward, the clamping motor 30 drives the conveying fixed block 29 to move leftward, the conveying fixed block 29 drives the clamping plate 34 to move leftward, the clamping plate 34 drives the clamping plate 62 to move leftward, and the clamping plate 34 clamps the new welding rod 38 to move leftward, since the conveying slider 19 moves leftwards, the starting block 16 gradually extends into the starting chute 18, and when moving to the leftmost end, the starting block 16 touches the clamping motor 30, the clamping motor 30 is started to drive the clamping motor shaft 32 to rotate, the clamping motor shaft 32 drives the clamping reel 33 to rotate, the winding wire between the clamping reel 33 and the clamping plate 62 is tightened, the clamping plate 62 moves from the middle to the two sides, the clamping plate 62 no longer clamps the consumed welding rod 38, the old welding rod 38 falls into the collecting cavity 13, and at the same time, the clamping plate 34 clamps the new welding rod 38 to move to the middle of the upper welding clamp 27, at this time, the upper clamp rotating block 54 is released, and due to the elasticity of the rotating torsion spring 56, the upper clamp rotating block 54 rotates clockwise, the upper clamp rotating block 54 drives the upper welding clamp 27 to rotate clockwise, the upper welding clamp 27 drives the third start switch 25 to rotate clockwise, the third start switch 25 contacts with the second start switch 26, at this time, the start motor 21 is started reversely to drive the start spool 23 to rotate, the start spool 23 drives the start reel 22 to rotate, the winding wire on the start reel 22 is loosened, the conveying slider 19 is popped up due to the elastic action of the fixing spring 17, at this time, the upper welding clamp 27 can clamp the new welding rod 38, and at the same time, when the clamping plate 62 returns to the initial position, the clamping motor 30 is started reversely, the clamping motor shaft 32 rotates, the clamping motor shaft 32 drives the clamping reel 33 to rotate, the winding wire on the clamping reel 33 is loosened, due to the elastic force of the clamping spring 36, the clamping plate 62 clamps the new welding wire 38, when the clamping plate 34 clamps a new welding wire 38 to move to the middle, the welding wire pushing motor 44 is started, the welding rod pushes the winding shaft 43 to rotate, the welding rod pushes the winding shaft 43 to drive the welding rod to push the winding wheel 42 to rotate, the welding rod pushes the winding wire on the winding wheel 42 to be loosened, due to the elastic force of the wire pushing spring 46, the wire pushing plate 47 moves leftward, pushing out the wire 38, and at this time, the clamping plate 34 no longer shields the welding wire 38, the welding wire 38 is again pushed into a horizontal position in the middle of the clamping cavity 37, and so on, until the welding wire 38 in the wire feed trough 40 is depleted, and the discarded welding electrodes 38 are collected in the collection chamber 13, and the whole movement process is completed.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a protection of electric welding clamp and automatic change equipment of welding rod, is including settling the piece, its characterized in that: the utility model discloses a welding clamp, including settling chamber, fixed connection, the starting winding shaft is provided with a fixedly connected starting winding wheel, the right end face of the starting motor is provided with a fixedly connected first starting switch, the right end face of the starting motor is provided with a fixedly connected second starting switch, the left end face of the upper side electric welding clamp is provided with a fixedly connected third starting switch, the inner wall of the left side of the placing cavity is provided with a fixedly connected fixed block, a fixed cavity with a left opening is arranged in the fixed block, the inner wall of the left side of the placing cavity is provided with a fixedly connected starting block, the inner wall of the left side of the placing cavity is simultaneously provided with a fixedly connected fixed spring, a sliding connected conveying sliding block is arranged in the fixed cavity, the conveying sliding block is fixedly connected with the fixed spring, a starting sliding groove with a left opening is arranged in the conveying sliding block, the starting sliding groove and the starting block are positioned on the same horizontal plane, and the right, the conveying fixed block is provided with a conveying fixed cavity with a leftward opening, the inner wall of the rear side of the conveying fixed cavity is provided with a fixedly connected clamping motor, the clamping motor is fixedly connected with the conveying sliding block, the right end face of the clamping motor is provided with a rotatably connected clamping motor shaft, the clamping motor shaft is provided with a fixedly connected clamping reel, the right end face of the conveying fixed block is provided with a fixedly connected clamping plate, the clamping plate is provided with two vertically symmetrical clamping grooves relative to the conveying fixed block, the clamping plate is provided with a clamping groove with a downward opening, a fixedly connected clamping spring is arranged in the clamping groove, the clamping groove is provided with a sliding connected clamping plate, the clamping plate is fixedly connected with the clamping spring, the connecting plate is provided with a fixedly connected welding rod conveying track, and the connecting plate is also provided with a fixedly connected welding rod conveying fixed block, a welding rod conveying groove is formed between the welding rod conveying fixing block and the welding rod conveying rail, a plurality of welding rods which are connected in a sliding mode are arranged in the welding rod conveying groove, the lower side electric welding clamp is fixedly connected with the inner wall of the lower side of the placement cavity, a fixedly connected collecting block is arranged on the inner wall of the lower side of the placement cavity, a collecting cavity with an upward opening is formed in the collecting block, and the collecting block is fixedly connected with the lower side electric welding clamp; the rear side of the placement cavity is provided with a protection mechanism, the protection mechanism comprises a fixed block connecting block fixedly connected with the electric welding clamp fixed block, the fixed block connecting block is provided with a fixedly connected hand protection fixed block, the fixed block connecting block is simultaneously provided with an upper opening and closing shaft in rotary connection, the upper opening and closing shaft is provided with a fixedly connected opening and closing torsion spring, the upper opening and closing shaft is provided with an upper opening and closing plate in rotary connection, the upper opening and closing plate is provided with two upper opening and closing plates which are vertically symmetrical relative to the electric welding clamp fixed block, a hand protection chute is arranged in the middle of the hand protection fixed block, a hand protection sliding block in sliding connection is arranged in the hand protection chute, a fixedly connected hand protection spring is arranged on the hand protection sliding block, a hand protection chute is arranged in the middle of the hand protection chute, and an opening and closing, be equipped with fixed connection's rotation torsional spring in the axis of rotation that opens and shuts, be equipped with the upside open-close plate that rotates the connection on the rotation torsional spring, be equipped with the ascending lens spout of opening on the upside open-close plate, lens spout downside inner wall is equipped with fixed connection's lens sliding spring, be equipped with sliding connection's eye protection lens in the lens spout, fixed block connecting block left side is equipped with fixed connection's catch bar, electric welding clamp fixed block up end is equipped with fixed connection's hand protection spring, the hand protection spring with upside clamp rotating block fixed connection.

2. The automatic electrode-changing device for welding tongs according to claim 1, characterized in that: change mechanism still include in the welding rod conveyer trough with downside electric welding clamp fixed connection's welding rod push motor, be equipped with the welding rod that rotates the connection on the welding rod push motor and promote the spool, the welding rod promotes the reel that is equipped with fixed connection on the spool, welding rod push motor right side is equipped with fixed connection's welding rod and promotes the spring, be equipped with sliding connection's welding rod slurcam in the welding rod conveyer trough, the welding rod slurcam with welding rod promotes spring fixed connection.

3. The automatic electrode-changing device for welding tongs according to claim 1, characterized in that: the protection mechanism still include with fixed block connecting block fixed connection's downside switching shaft, the epaxial downside torsional spring that is equipped with fixed connection of downside switching, the epaxial downside switching board that rotates the connection that is equipped with of downside switching.

4. The automatic electrode-changing device for welding tongs according to claim 1, characterized in that: the start reel with carry the slider to pass through winding line fixed connection, the centre gripping reel with the grip block passes through winding line fixed connection, the welding rod promote the reel with the welding rod promotes the board and passes through winding line fixed connection.