CN112404877B

CN112404877B - Fixing device for metal welding

Info

Publication number: CN112404877B
Application number: CN202011266014.XA
Authority: CN
Inventors: 喻文杰; 李小飞; 易春红; 贾刊和
Original assignee: China Railway 24th Bureau Group Co Ltd; Xinyu Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
Current assignee: China Railway 24th Bureau Group Co Ltd; Xinyu Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2022-07-19
Anticipated expiration: 2040-11-12
Also published as: CN112404877A

Abstract

The invention provides a fixing device for metal welding, which relates to the technical field of fixing devices for welding and comprises a workbench, wherein both ends of the top of the workbench are provided with limiting grooves, an impurity storage groove is formed between the two limiting grooves in the top of the workbench, a rust removal assembly is fixedly arranged at one end of the two limiting grooves in the top of the workbench, and a fastening device is fixedly arranged at the other end of the two limiting grooves in the top of the workbench. According to the invention, the fixing is more accurate through two-time position adjustment, meanwhile, the buffer spring is arranged, the resilience force of the buffer spring effectively counteracts the vibration generated during welding, so that the condition that the welding quality is influenced by the pipe deviation caused by the deviation of the traditional circular hoop due to long-term extrusion is avoided, and meanwhile, the anti-slip strip is arranged on the inner wall of the clamping hoop, so that the condition of slipping during pipeline welding can be further prevented, and the welding accuracy is improved.

Description

Fixing device for metal welding

Technical Field

The invention relates to the technical field of fixing devices for welding, in particular to a fixing device for metal welding.

Background

With the development of society, forging and application of metal pipelines are more and more extensive in China, some pipelines are devices for conveying gas, liquid or fluid with solid particles, and the pipelines are widely applied to multiple industries and multiple fields due to unique characteristics of the pipelines, are widely used, and are mainly used for water supply, drainage, heat supply, gas supply, long-distance conveying of petroleum and natural gas, agricultural irrigation, water conservancy projects and various industrial devices.

The metal pipeline is used as one type of pipeline, and is quite common in the construction process of chemical engineering buildings, but in the prefabrication process of the metal pipeline, the metal pipeline is often required to be welded, butt welding and fillet welding are required according to the requirements of a welding process, and the metal pipeline is required to be fixed before welding.

The fixed effect of current welding fixing device to metal pipeline is relatively poor, directly adopts the circular hoop to fix usually, and at the welded in-process, can produce vibrations sometimes, and vibrations are that the pipeline extrudees the circular hoop, because fixing device does not have the subassembly that can cushion the extrusion force of own for the circular hoop receives the extrusion for a long time just as can produce the skew, and the skew of pipe is just caused very easily at the skew of fixed pipe in-process to the circular hoop, thereby has influenced welding quality.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a fixing device for metal welding.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a fixing device for metal welding, includes the workstation, the spacing groove has all been seted up at the top both ends of workstation, the top of workstation is located and has been seted up between two spacing grooves and store up miscellaneous groove, the one end fixed mounting that the top of workstation is located two spacing grooves has the rust cleaning subassembly, the other end fixed mounting that the top of workstation is located two spacing grooves has fastener, the both sides and the top that the top of workstation is located the storage miscellaneous groove are provided with clean subassembly.

Fastener includes the back shaft, the both ends of back shaft are fixed mounting in one side of two spacing grooves respectively, the surface of back shaft rotates and is connected with the commentaries on classics piece, the inside both ends of commentaries on classics piece all run through and are provided with the thread bush, the inside threaded connection of thread bush has the screw rod, the one end that the piece was kept away from to the screw rod is provided with fine setting buffering subassembly.

Preferably, through holes are formed in one end, located inside the rotating block, of the supporting shaft and the inside of the rotating block, and the inserting rod is inserted into the supporting shaft and the rotating block through the through holes.

Preferably, the fine setting buffering subassembly includes a groove and No. two grooves, a groove and No. two grooves have been seted up respectively to the screw rod inside keeping away from the one end of commentaries on classics piece, the inner wall sliding connection in a groove has the mounting panel, the mounting panel is kept away from the both ends in a groove and is all articulated to have the articulated slab, the one end inner wall sliding connection that the mounting panel was kept away from to the articulated slab has the traction lever, the one end fixed mounting that the articulated slab was kept away from to the traction lever has the centre gripping hoop.

Preferably, a groove and No. two grooves are mutually linked, and are mutually perpendicular setting, a plurality of regulation hole has all been seted up to the inside of a groove and mounting panel, the inside of regulation hole is inserted and is equipped with the adjusting pin, the one end that the adjusting pin kept away from the adjusting hole runs through No. two grooves and extends to the outside in No. two grooves.

Preferably, a buffer spring is sleeved at one end of the traction rod, which is positioned between the hinged plate and the clamping hoop, and two ends of the buffer spring are fixedly connected with the outer surfaces of the hinged plate and the clamping hoop respectively.

Preferably, the number of the clamping hoops is two, the two clamping hoops are hinged with each other through a pin shaft, and a plurality of anti-slip strips are arranged on one side of the two clamping hoops, which is opposite to the limiting groove.

Preferably, the rust cleaning subassembly includes connecting piece and slot, connecting piece and slot set up the both sides at the single spacing groove in workstation top respectively, the top of connecting piece articulates there is half hoop, half hoop one side fixed mounting relative with the spacing groove has the scraper, the top of workstation is located edge fixed mounting and has the lug, surface one side lateral wall fixed mounting of lug has the sleeve pipe, sheathed tube inner wall sliding connection has the locating pin, the surface of locating pin is provided with the spacing ring, the locating pin is located the pot head between spacing ring and the sleeve pipe and is equipped with elastic spring, elastic spring's both ends respectively with spacing ring and sheathed tube fixed surface be connected.

Preferably, one end of the half hoop, which is far away from the connecting piece, is provided with a straight section, a positioning hole is formed in the straight section of the half hoop, the size of the positioning hole is matched with that of the positioning pin, and the inner shape of the slot is in a half arc shape.

Preferably, the cleaning assembly comprises a strip-shaped block, the top of the workbench is located on two sides of the impurity storage groove, the strip-shaped block is fixedly mounted on two sides of the impurity storage groove, a sliding groove is formed between the two opposite sides of the strip-shaped block, a sliding block is slidably connected to the inner wall of the sliding groove, a shaft rod is fixedly mounted on the two opposite sides of the sliding block, a connecting rod is rotatably connected to the outer surface of the shaft rod, a connecting block is fixedly mounted at one end, away from the shaft rod, of the connecting rod, an impurity removing knife and a brush are fixedly mounted on two sides of the outer surface of the connecting block respectively, and a reset spring is fixedly mounted between the sliding block and the opposite side of the sliding groove.

Preferably, the sundry storage groove is internally provided with a sundry outlet, supporting legs are fixedly arranged at four corners of the bottom of the workbench, a groove is formed in the inner wall of one of the supporting legs, the supporting legs are connected with a collecting box in a sliding mode through the grooves, and the collecting box is located under the sundry outlet.

Compared with the prior art, the invention has the advantages and positive effects that,

1. in the invention, through arranging the fastening device, when a pipeline needs to be welded, the pipeline is firstly placed in the limiting groove, the insert rod is rotated to enable the insert rod to drive the rotating block to rotate along the outer surface of the supporting shaft, when the rotating block drives the clamping hoop to rotate to be right above the limiting groove, the insert rod is inserted into the rotating block and the through hole of the supporting shaft to achieve the effect of fixing the rotating block, the screw rod is rotated to slide along the inner wall of the threaded sleeve and drive the clamping hoop to initially descend to the position matched with the pipeline, the adjusting pin is pulled out of the adjusting hole and pulled to enable the limiting pin to slide along the inner wall of the first groove and drive the mounting plate to slide along the inner part of the second groove, the mounting plate drives the hinged rods at two sides to move when moving, the hinged rods drive the traction rods to move, the traction rods draw the clamping hoops to enable the two clamping hoops to be hinged through the pin shafts, the pipe clamp is further tightly attached to the inside of a pipeline, the adjusting pin is inserted into the adjusting hole at the position again to achieve the fixing effect, the pipeline is fixed simply and conveniently by arranging the fastening device, the operation limitation is reduced, the operation requirements of more workers are met, the fixing time is saved, meanwhile, the fixing is more accurate by adjusting the position twice, a buffer spring is arranged, when the welding shakes, the clamping hoop is subjected to the extrusion force of the pipeline and is transmitted to the traction rod, the hinge plate slides along the inner wall of the traction rod and extrudes the buffer spring, the resilience of the buffer spring effectively offsets the shake generated during the welding, the phenomenon that the traditional circular hoop is extruded for a long time to generate deviation, so that the pipe deviation influences the welding quality is avoided, and the inner wall of the clamping hoop is provided with the anti-slip strips, the condition of skidding when can further preventing the pipeline welding has improved the welded precision.

2. In the invention, by arranging the cleaning component, when welding, a large amount of welding scraps are generated to fall into the impurity storage groove, the collecting box is slid to move the collecting box to be under the impurity outlet, the connecting rod is held by hands and is lifted, so that the connecting rod rotates through the shaft rod, the impurity removing knife and the brush are lowered to the inner wall of the impurity storage groove, the connecting rod is pushed and the reset spring is extruded, the connecting rod drives the connecting block to slide along the inner wall of the chute through the sliding block, the connecting block drives the impurity removing knife to move along the inner wall of the impurity storage groove and scrape the welding scraps adhered to the inside of the impurity storage groove, meanwhile, the brush behind the connecting block cleans the welding scraps which are separated from the inner wall of the impurity storage groove and pushes the welding scraps to the impurity outlet, the welding scraps are pushed into the impurity outlet and fall into the inside of the impurity receiving box, the connecting rod is loosened, and the impurity removing knife is quickly reset through the resilience force of the reset spring, at this moment repeat above-mentioned operation once more, so relapse many times, can clear up this welding bits fast, through this clean subassembly, effective and quick clean store up the welding bits that the miscellaneous inslot portion of bonding, avoided the later stage to weld the bits and gathered too much, when leading to the welding, weld the bits if receive the air current factor and fly in disorder, and influence welded precision, also avoided the later stage to spend a large amount of manual clear circumstances appearance in a large number simultaneously, become to have practiced thrift the cost of labor mutually.

3. In the invention, by arranging the rust removing component, when the pipeline needs to be welded, the welded part needs to be removed rust firstly, the pipeline is placed in the limiting groove, the limiting ring is slid, the limiting ring drives the positioning pin to move along the inner wall of the sleeve, the positioning pin is separated from the top of the slot, the elastic spring is extruded, the half hoop is rotated and inserted into the slot, the limiting ring is loosened, the positioning pin is inserted into the positioning hole through the resilience force of the elastic spring, the half hoop drives the scraper to tightly adhere to the outer surface of the pipeline, the pipeline is rotated and the pull-pull pipeline is pulled back, the scraper is used for scraping the rust on the outer surface of the pipeline, the outer surface welding part of the pipeline can be directly pretreated through the rust removing component, the step operation is avoided, the time period for carrying the pipeline to remove rust is saved, and the operation time is saved, the efficiency of welding has been improved, the practicality of the device has been improved.

Drawings

FIG. 1 is a schematic perspective view of a fixing device for metal welding according to the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 at A according to the present invention;

FIG. 3 is a schematic bottom view of a fixing device for metal welding according to the present invention;

FIG. 4 is a schematic structural view of a cleaning assembly of a fixing device for metal welding according to the present invention;

FIG. 5 is a side view of the cleaning assembly of the fixing device for metal welding according to the present invention;

FIG. 6 is a schematic structural view of a fastening device of a fixing device for metal welding according to the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6 at B according to the present invention.

Illustration of the drawings:

1. a work table; 11. a collection box; 2. a limiting groove; 3. an impurity storage tank; 31. a sundry outlet; 4. a rust removal assembly; 41. a connecting member; 42. half hoops; 43. positioning holes; 44. a scraper; 45. a slot; 46. a bump; 47. a sleeve; 48. positioning pins; 49. a limiting ring; 410. an elastic spring; 5. a fastening device; 51. a support shaft; 52. rotating the block; 53. a threaded sleeve; 54. a rod is inserted; 55. a screw; 56. fine tuning the buffer assembly; 561. a first groove; 562. a second groove; 563. mounting a plate; 564. an adjustment hole; 565. an adjustment pin; 566. a hinge plate; 567. a draw bar; 568. a buffer spring; 569. a clamping hoop; 6. a cleaning assembly; 61. a bar-shaped block; 62. a chute; 63. a slider; 64. a shaft lever; 65. a connecting rod; 66. connecting blocks; 67. removing impurities; 68. a brush; 69. a return spring; 7. and (3) a support leg.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the present invention is not limited to the specific embodiments disclosed in the following description.

Embodiment 1, as shown in fig. 1 to 7, the invention provides a fixing device for metal welding, which comprises a workbench 1, wherein both ends of the top of the workbench 1 are provided with limiting grooves 2, the top of the workbench 1 is positioned between the two limiting grooves 2 and is provided with an impurity storage groove 3, one end of the top of the workbench 1 positioned in the two limiting grooves 2 is fixedly provided with a rust removal component 4, the other end of the top of the workbench 1 positioned in the two limiting grooves 2 is fixedly provided with a fastening device 5, and the two sides and the top of the workbench 1 positioned in the impurity storage groove 3 are provided with cleaning components 6.

The specific arrangement and function of the fastening means 5 will be described in detail below.

As shown in fig. 2 and 3, the fastening device 5 includes a supporting shaft 51, two ends of the supporting shaft 51 are respectively and fixedly installed at one side of the two limiting grooves 2, a rotating block 52 is rotatably connected to an outer surface of the supporting shaft 51, both ends of the interior of the rotating block 52 are respectively provided with a threaded sleeve 53 in a penetrating manner, a through hole is formed in one end of the supporting shaft 51 located inside the rotating block 52 and the interior of the rotating block 52, an insertion rod 54 is inserted into the supporting shaft 51 and the rotating block 52 through the through hole, a screw 55 is connected to the interior of the threaded sleeve 53 in a threaded manner, a fine adjustment buffer assembly 56 is arranged at one end of the screw 55 far away from the rotating block 52, the fine adjustment buffer assembly 56 includes a first groove 561 and a second groove 562, a first groove 561 and a second groove 562 are respectively formed in one end of the screw 55 far away from the rotating block 52, a mounting plate 563 is slidably connected to an inner wall of the mounting plate 563, both ends of the mounting plate 563 are hinged to both ends, a hinge plate 566 far away from the mounting plate 566, a end of the hinge plate 566 far away from the mounting plate 563 is slidably connected to a traction rod 567, the end of the draw bar 567 far away from the hinged plate 566 is fixedly provided with a clamping hoop 569, the first groove 561 is communicated with the second groove 562 and is arranged vertically, a plurality of adjusting holes 564 are formed in the first groove 561 and the mounting plate 563, an adjusting pin 565 is inserted in the adjusting hole 564, one end of the adjusting pin 565 far away from the adjusting hole 564 penetrates through the second groove 562 and extends to the outside of the second groove 562, one end of the draw bar 567, which is located between the hinged plate 566 and the clamping hoop 569, is sleeved with a buffer spring 568, two ends of the buffer spring 568 are fixedly connected with the outer surfaces of the hinged plate 566 and the clamping hoop 569 respectively, the number of the clamping hoops 569 is two, the two clamping hoops 569 are hinged with each other through a pin shaft, and one side of the two clamping hoops 569, which faces the limiting groove 2, is provided with a plurality of anti-slip strips.

The whole fastening device 5 achieves the effect that by arranging the fastening device 5, when the pipeline needs to be welded, the pipeline is firstly placed in the limiting groove 2, the inserting rod 54 is rotated, the inserting rod 54 drives the rotating block 52 to rotate along the outer surface of the supporting shaft 51, when the rotating block 52 drives the clamping hoop 569 to rotate to the position right above the limiting groove 2, the inserting rod 54 is inserted into the rotating block 52 and the through hole of the supporting shaft 51 to achieve the effect of fixing the rotating block 52, at the moment, the screw 55 is rotated, the screw 55 slides along the inner wall of the threaded sleeve 53 and drives the clamping hoop 569 to descend to the position matched with the pipeline for the first time, at the moment, the adjusting pin 565 is pulled out of the adjusting hole 564, the limiting pin is pulled to slide along the inner wall of the first groove 561, the mounting plate 563 is driven to slide along the inner part of the second groove 562, and the mounting plate 563 is driven to move when moving, the hinging rod drives the traction rod 567 to move, the traction rod 567 pulls the clamping hoops 569, so that the two clamping hoops 569 are further tightly attached to the interior of the pipeline through the hinging of the pin shaft, at the moment, the adjusting pin 565 is inserted into the adjusting hole 564 at the position again to achieve the fixing effect, the fastening device 5 is arranged to ensure that the pipeline is fixed, the operation is simple and convenient, the operation limit is reduced, the operation requirements of more workers are met, the fixing time is saved, meanwhile, the fixing is more accurate through two adjusting positions, meanwhile, the buffer spring 568 is arranged, when the welding shakes, the clamping hoops 569 are subjected to the extrusion force of the pipeline and are transmitted to the traction rod 567, so that the traction rod 567 slides along the inner wall of the hinging plate 566 and extrudes the buffer spring 568, and the resilience force of the buffer spring 568 effectively counteracts the shaking generated during the welding, the skew can not appear receiving the extrusion for a long time in traditional circular hoop to cause the pipe skew to influence welding quality's the condition to take place, the inner wall of centre gripping hoop 569 is provided with the antislip strip simultaneously, the condition of skidding when can further preventing the pipe welding has improved the welded precision.

Example 2

The specific arrangement and function of the rust removing assembly 4 will be described in detail below.

As shown in fig. 2 and 4, the rust removing assembly 4 includes a connecting member 41 and a slot 45, the connecting member 41 and the slot 45 are respectively disposed on two sides of the single limiting groove 2 on the top of the worktable 1, a half hoop 42 is hinged on the top of the connecting member 41, a scraper 44 is fixedly mounted on one side of the half hoop 42 opposite to the limiting groove 2, a projection 46 is fixedly mounted on the top edge of the worktable 1, a sleeve 47 is fixedly mounted on a side wall of an outer surface of the projection 46, a positioning pin 48 is slidably connected to an inner wall of the sleeve 47, a limiting ring 49 is disposed on an outer surface of the positioning pin 48, an elastic spring 410 is sleeved on one end of the positioning pin 48 between the limiting ring 49 and the sleeve 47, two ends of the elastic spring 410 are respectively fixedly connected to outer surfaces of the limiting ring 49 and the sleeve 47, one end of the half hoop 42 away from the connecting member 41 is disposed as a straight section, the half hoop 42 is disposed at the straight section and provided with a positioning hole 43, a size of the positioning hole 43 is adapted to a size of the positioning pin 48, the inner shape of the slot 45 is a half arc.

The whole rust removing component 4 has the effects that through the arrangement of the cleaning component 6, when welding is carried out, a large amount of welding scraps are generated, the welding scraps fall into the impurity storage groove 3, at the moment, the collecting box 11 slides, the collecting box 11 moves to the position right below the impurity outlet 31, the connecting rod 65 is held by hand, the connecting rod 65 is lifted, the connecting rod 65 rotates through the shaft rod 64, the impurity removing knife 67 and the brush 68 descend to the inner wall of the impurity storage groove 3, the connecting rod 65 is pushed, the return spring 69 is extruded, the connecting rod 65 drives the connecting block 66 to slide along the inner wall of the sliding groove 62 through the sliding block 63, the impurity removing knife 67 is driven by the connecting block 66 to move along the inner wall of the impurity storage groove 3, the welding scraps adhered to the inner part of the impurity storage groove 3 are scraped, the brush 68 behind the connecting block 66 cleans the welding scraps which are separated from the inner wall of the impurity storage groove 3 and pushes the position of the impurity outlet 31, and pushes the welding scraps into the impurity outlet 31, and drop to the inside of inbox, loosen connecting rod 65, through reset spring 69 resilience force, make the quick reset of edulcoration sword 67, at this moment operation above the repetition, so relapse many times, can clear up this welding bits fast, through this cleaning assembly 6, effective and quick clean the welding bits that store up the inside bonding in miscellaneous groove 3, avoided the later stage to weld the bits and gathered too much, when leading to the welding, if it flies in disorder to receive the air current factor to weld the bits, and influence welded precision, also avoided the later stage to spend a large amount of manual works to carry out manual clear's the condition to appear simultaneously, the cost of labor has been practiced thrift mutually in the change.

Example 3

The specific arrangement and function of the cleaning assembly 6 will be described in detail below.

The cleaning component 6 comprises a bar-shaped block 61, the two sides of the top of the workbench 1, which are positioned on the impurity storage groove 3, are fixedly provided with the bar-shaped block 61, a sliding groove 62 is arranged between the two opposite sides of the bar-shaped block 61, the inner wall of the sliding groove 62 is connected with a sliding block 63 in a sliding way, the two opposite sides of the sliding block 63 are fixedly provided with a shaft lever 64, the outer surface of the shaft lever 64 is connected with a connecting rod 65 in a rotating way, one end of the two connecting rods 65, which is far away from the shaft lever 64, is fixedly provided with a connecting block 66, the two sides of the outer surface of the connecting block 66 are respectively fixedly provided with an impurity removing knife 67 and a hair brush 68, a return spring 69 is fixedly arranged between the sliding block 63 and the opposite side of the sliding groove 62, the impurity storage groove 3 is internally provided with an impurity outlet 31, the four corners of the bottom of the workbench 1 are fixedly provided with supporting legs 7, the inner wall of one of the support legs 7 is provided with a groove, the support leg 7 is connected with a collecting box 11 in a sliding way through the groove, and the collecting box 11 is positioned under the sundry outlet 31.

The whole cleaning component 6 has the effects that by arranging the rust removing component 4, when the pipeline needs to be welded, the welded part needs to be subjected to rust removal firstly, the pipeline is placed in the limiting groove 2 firstly, the limiting ring 49 slides to enable the limiting ring 49 to drive the positioning pin 48 to move along the inner wall of the sleeve 47, the positioning pin is separated from the top of the slot 45, the elastic spring 410 is extruded, the half hoop 42 is rotated again to enable the half hoop 42 to rotate and be inserted into the slot 45, the limiting ring 49 is loosened, the positioning pin 48 is inserted into the positioning hole 43 through the resilience force of the elastic spring 410, the half hoop 42 drives the scraper 44 to be tightly attached to the outer surface of the pipeline, at the moment, the pipeline is rotated and the pull-back pipeline is pulled back to enable the scraper 44 to scrape the rust on the outer surface of the pipeline, the outer surface welding part of the pipeline can be directly pretreated through the rust removing component 4, and the step operation is avoided, the time period for carrying the pipeline to remove rust is saved, the operation time is saved, the welding efficiency is improved, and the practicability of the device is improved.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.

Claims

1. The utility model provides a fixing device for metal welding, includes workstation (1), its characterized in that: both ends of the top of the workbench (1) are provided with limiting grooves (2), the top of the workbench (1) is positioned between the two limiting grooves (2) and is provided with a sundry storage groove (3), the top of the workbench (1) is positioned at one end of the two limiting grooves (2) and is fixedly provided with a rust removal assembly (4), the top of the workbench (1) is positioned at the other end of the two limiting grooves (2) and is fixedly provided with a fastening device (5), and the top of the workbench (1) is positioned at both sides and the top of the sundry storage groove (3) and is provided with cleaning assemblies (6);

the fastening device (5) comprises a supporting shaft (51), two ends of the supporting shaft (51) are respectively and fixedly installed on one side of the two limiting grooves (2), the outer surface of the supporting shaft (51) is rotatably connected with a rotating block (52), two ends inside the rotating block (52) are respectively provided with a threaded sleeve (53) in a penetrating mode, the internal thread of the threaded sleeve (53) is connected with a screw rod (55), and one end, far away from the rotating block (52), of the screw rod (55) is provided with a fine adjustment buffer component (56);

The fine adjustment buffer assembly (56) comprises a first groove (561) and a second groove (562), the first groove (561) and the second groove (562) are respectively formed in one end, far away from the rotating block (52), of the screw (55), the inner wall of the first groove (561) is connected with a mounting plate (563) in a sliding mode, two ends, far away from the first groove (561), of the mounting plate (563) are hinged to hinge plates (566), the inner wall, far away from the mounting plate (563), of one end of each hinge plate (566) is connected with a pull rod (567) in a sliding mode, and one end, far away from the hinge plates (566), of each pull rod (567) is fixedly provided with a clamping hoop (569);

groove (561) and No. two groove (562) communicate each other, and be mutually perpendicular setting, a plurality of regulation hole (564) have all been seted up to the inside of groove (561) and mounting panel (563), regulation round pin (565) have been inserted to the inside of regulation hole (564), the one end that regulation round pin (565) kept away from regulation hole (564) runs through groove (562) No. two and extends to the outside of groove (562) No. two.

2. A fixing device for metal welding according to claim 1, wherein: the supporting shaft (51) is located the one end of changeing the inside of piece (52) and the inside of changeing piece (52) and has seted up the through-hole, inserted bar (54) are inserted through the through-hole in supporting shaft (51) and changeing piece (52).

3. A fixing device for metal welding according to claim 1, wherein: one end of the draw bar (567) between the hinged plate (566) and the clamping hoop (569) is sleeved with a buffer spring (568), and two ends of the buffer spring (568) are fixedly connected with the outer surfaces of the hinged plate (566) and the clamping hoop (569) respectively.

4. A fixing device for metal welding according to claim 1, wherein: the number of the clamping hoops (569) is two, the clamping hoops (569) are hinged to each other through a pin shaft, and a plurality of anti-slip strips are arranged on one side, right opposite to the limiting groove (2), of the two clamping hoops (569).

5. A fixing device for metal welding according to claim 1, characterized in that: the rust removing component (4) comprises a connecting piece (41) and a slot (45), the connecting piece (41) and the slot (45) are respectively arranged on two sides of the single limiting groove (2) at the top of the workbench (1), the top of the connecting piece (41) is hinged with a half hoop (42), one surface of the half hoop (42) opposite to the limiting groove (2) is fixedly provided with a scraper (44), a convex block (46) is fixedly arranged at the edge of the top of the workbench (1), a sleeve (47) is fixedly arranged on the side wall of one side of the outer surface of the convex block (46), the inner wall of the sleeve (47) is connected with a positioning pin (48) in a sliding way, the outer surface of the positioning pin (48) is provided with a limit ring (49), an elastic spring (410) is sleeved at one end of the positioning pin (48) positioned between the limiting ring (49) and the sleeve (47), two ends of the elastic spring (410) are respectively fixedly connected with the outer surfaces of the limiting ring (49) and the sleeve (47).

6. A fixing device for metal welding according to claim 5, characterized in that: one end, far away from the connecting piece (41), of the half hoop (42) is provided with a straight section, a positioning hole (43) is formed in the position, located at the straight section, of the half hoop (42), the size of the positioning hole (43) is matched with the size of the positioning pin (48), and the inner shape of the slot (45) is in a half arc shape.

7. A fixing device for metal welding according to claim 1, wherein: clean subassembly (6) include strip-shaped block (61), the top of workstation (1) is located the equal fixed mounting in both sides that stores up miscellaneous groove (3) has strip-shaped block (61), two spout (62) have been seted up between the relative one side of strip-shaped block (61), the inner wall sliding connection of spout (62) has slider (63), two the equal fixed mounting in one side that slider (63) is relative has axostylus axostyle (64), the surface rotation of axostylus axostyle (64) is connected with connecting rod (65), two the one end fixed mounting that axostylus axostyle (64) were kept away from in connecting rod (65) has connecting block (66), the surface both sides of connecting block (66) fixed mounting respectively has edulcoration sword (67) and brush (68), fixed mounting has reset spring (69) between the relative one side of slider (63) and spout (62).

8. A fixing device for metal welding according to claim 1, characterized in that: sundry outlet openings (31) are formed in the sundry storage grooves (3), supporting legs (7) are fixedly mounted at the positions, located at the four corners, of the bottom of the workbench (1), grooves are formed in the inner walls of the supporting legs (7), the supporting legs (7) are connected with collecting boxes (11) in a sliding mode through the grooves, and the collecting boxes (11) are located under the sundry outlet openings (31).