CN115255801A - Seamless welding machining center - Google Patents

Abstract

The invention relates to the technical field of welding processing, in particular to a seamless welding processing center which comprises a workbench, wherein a support rod is connected to the rear end of the middle part of the upper surface of the workbench in a sliding manner, the support rod is in an inverted L shape, an electric telescopic rod is fixedly connected to the lower surface of the tail end of the support rod, an electric welding head is fixedly connected to the lower end surface of the electric telescopic rod, a cooling protection mechanism is arranged on the left side of the upper end surface of the workbench, the cooling protection mechanism drives a pipeline to rotate when welding is carried out, and cooled inert gas can be introduced into the pipeline by the cooling protection mechanism, so that the problems that the mechanical property and the corrosion resistance of the weld metal are reduced due to oxidation of the weld metal on the back surface during welding of the pipeline and the alloy elements are burnt to generate welding defects are prevented, the stability of the welding process can be ensured by the cooled inert gas, the heat is reduced, and the pipeline welding effect is optimized.

Description

Seamless welding machining center

Technical Field

The invention relates to the technical field of welding processing, in particular to a seamless welding processing center.

Background

Welding is the process of joining metal parts using various fusible alloys (solders). The melting point of the solder is lower than that of the material to be welded, so that the welding is completed by intermolecular connection between the surfaces of the parts without melting the parts. The seamless steel pipe has a hollow section, is widely used as a pipeline for conveying fluid, such as petroleum, natural gas, coal gas, water and some solid materials, and the welding processing art of the seamless steel pipe is more and more valued by people.

In the existing pipeline welding process, firstly, ports of two pipelines are manually closed, then a joint part is welded from the outer side surface of the pipeline, and aiming at a circular pipeline, a weldment needs to be manually moved around the periphery of a welding line in the welding process to finish welding.

However, in the above-mentioned pipe welding process, the part corresponding to the joint part on the inner surface of the pipe is located, because the metal reacts with oxygen or oxygen-containing substances such as water vapor, carbon dioxide, sulfur dioxide and the like in a high-temperature gas phase environment and is converted into metal oxide, the metal oxide is easy to be separated from the metal and cannot form a whole, the metal is corroded and oxidized at high temperature, thus alloy elements are burnt, welding defects are easily generated, the mechanical property and the corrosion resistance of the weld metal are reduced, the oxidation speed of the weld metal can be increased by a large amount of heat retained in the pipe in the welding process, the welding stability is affected, and the ideal welding effect of people cannot be met.

Therefore, a seamless welding machining center is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a seamless welding machining center, which solves the problems that: the technical problem that the mechanical property and the corrosion resistance of the weld metal are reduced due to the fact that the weld metal on the back side is oxidized in the welding process when the pipeline is welded and alloy elements are burnt to generate welding defects; and the technical problem of unstable welding caused by the heat retention in the pipeline in the welding process;

in order to achieve the above purpose, the invention is realized by the following technical scheme:

the invention provides a seamless welding machining center which comprises a workbench, wherein a support rod is connected to the rear end of the middle of the upper surface of the workbench in a sliding mode, the support rod is of an inverted L shape, an electric telescopic rod is fixedly connected to the lower surface of the tail end of the support rod, an electric welding head is fixedly connected to the lower end face of the electric telescopic rod, and a cooling protection mechanism is arranged on the position, to the left side, of the upper end face of the workbench.

Preferably, workstation up end middle part bilateral symmetry fixedly connected with two sets of supports, it is two sets of the equal fixedly connected with fixing bearing of support up end, it is two sets of the equal fixedly connected with solid fixed cylinder in fixing bearing internal surface, gu fixed cylinder length value is greater than solid fixed bearing length value, gu the fixed cylinder both ends are the conical gear structure, gu the fixed cylinder is located the equal annular equidistance in fixed bearing both sides position and is provided with three fixed subassemblies of group.

Preferably, fixed subassembly includes cylindricality piece, push rod one, push rod two, arc shell fragment, reset spring and cylindrical groove, fixed cylinder is located fixed bearing both sides position symmetry and annular equidistance link up three groups of cylindricality pieces of fixedly connected with, three groups the inside cylindrical groove that has all seted up of cylindricality piece, cylindrical groove bottom middle part fixedly connected with reset spring, reset spring upper end fixedly connected with push rod two, sliding connection between push rod two and the cylindricality piece, two upper end fixedly connected with arc shell fragments of push rod, the one end middle part screw thread transmission that arc shell fragment was kept away from to the cylindricality piece is connected with push rod one, controls two sets ofly fixed cylinder is inside to be located six groups of equal sliding connection with pipeline between the arc shell fragment.

Preferably, scales are marked on the annular outer surface of the push rod.

Preferably, the cooling protection mechanism comprises a motor frame, a right-angle motor, a column rod, a driving wheel, a first bevel gear, a support plate, a second bevel gear and a driving belt, the upper end face of the workbench is close to the motor frame fixedly connected with the left end support, the upper end face of the motor frame is fixedly connected with the right-angle motor, the upper end output shaft of the right-angle motor is fixedly connected with the column rod, the upper end of the column rod is fixedly connected with the first bevel gear, the first bevel gear is meshed with the right end of the left fixed cylinder, the right side of the first bevel gear is fixedly connected with the support plate in the middle of the right end face of the support, the upper end face of the support plate is rotatably connected with the second bevel gear through a bearing, the second bevel gear is meshed with the right end of the right fixed cylinder, the two groups of the driving wheels are fixedly connected with the annular outer surfaces of the column rod, and the driving belt is rotatably connected between the two groups of the driving wheels.

Preferably, the cooling protection mechanism further comprises an annular block, a guide block, an L-shaped rod, a sliding block, an arc block and a sliding rod, wherein the L-shaped rod is fixedly connected to an output shaft at the right end of the right-angle motor, the annular block is fixedly connected to the right end face of the right-angle motor and the output shaft at the right end, the two groups of guide blocks are fixedly connected to the upper end face and the lower end face of the annular block through inclined rods in an up-and-down symmetrical mode, the sliding rods are slidably connected to the inner portions of the upper and lower groups of guide blocks, the sliding rods are divided into an upper section and a lower section, the arc block is fixedly connected between the upper section of the sliding rods and the lower section of the sliding rods, the tail end of the L-shaped rod is rotatably connected with the sliding block through a bearing, and the sliding block is slidably connected with the arc grooves formed in the inner portions of the arc block.

Preferably, the adjacent surfaces of the two groups of the brackets are fixedly connected with a baffle above the cooling protection mechanism.

Preferably, the lower end face of the workbench is fixedly connected with a box body, the lower end of the workbench is fixedly connected with a third push rod, the lower end of the third push rod is fixedly connected with a piston, and the lower ends of the left side and the right side of the box body are connected with a through pipe in a penetrating manner.

Preferably, the four walls and the bottom end face of the box body are arranged in a hollow mode, a spiral pipe is fixedly connected to the inner portion of the hollow wall body of the box body, the spiral pipe is in an S-shaped spiral design, the top end of the spiral pipe penetrates through the outer wall of the upper end of the rear side of the box body, and the tail end of the spiral pipe penetrates through the outer wall of the lower end of the front side of the box body.

Preferably, two sets of siphunculus outer ends equal fixedly connected with hose about the box, two sets of the hose other end all rotates through the bearing and is connected with the disc, and is two sets of disc other end edge fixedly connected with rubber rand, right side disc right-hand member face through connection has the breather pipe, and is two sets of the rubber rand slides and cup joints at pipeline end surface.

The invention has the following beneficial effects:

through set up cooling protection mechanism in the device, when weldment work goes on, cooling protection mechanism can drive the pipeline and rotate, can realize like this that three hundred sixty degrees weld in two sets of pipeline contact departments under the circumstances that the soldered connection does not rotate, cooling protection mechanism still can let in through refrigerated inert gas toward pipeline inside simultaneously, prevent that the pipeline from the welding seam metal at the back when the welding from oxidizing at welding process, the loss of alloy element burns and produces welding defect, thereby cause the bad situation problem that the mechanical properties and the corrosion resistance of welding seam metal descend, and can ensure welding process's stability through refrigerated inert gas, reduce thermal delay, optimize pipeline welded effect.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view of the fixing assembly of the present invention;

FIG. 4 is an enlarged view of the invention at B in FIG. 1;

FIG. 5 is a perspective view of the mechanical assembly at the right end of the right angle motor of the present invention;

FIG. 6 is a cross-sectional view of the case of the present invention;

FIG. 7 is a structural view of the convolute duct of the present invention;

fig. 8 is a left side view of fig. 1 of the present invention.

Description of reference numerals:

1. a work table; 11. a strut; 12. an electric telescopic rod; 13. an electric welding head; 21. a support; 22. fixing a bearing; 23. a fixed cylinder; 24. a fixing component; 241. a cylindrical block; 242. a first push rod; 243. a second push rod; 244. an arc-shaped elastic sheet; 245. a return spring; 246. a cylindrical groove; 3. a pipeline; 4. a cooling protection mechanism; 40. a motor frame; 41. a right-angle motor; 411. a post rod; 412. a driving wheel; 42. a first bevel gear; 43. a support plate; 431. a second bevel gear; 44. a transmission belt; 45. an annular block; 451. a guide block; 46. an L-shaped rod; 461. a slider; 47. an arc-shaped block; 471. a slide bar; 48. a third push rod; 481. a piston; 49. a box body; 491. a coiled pipe; 492. pipe passing; 5. a baffle plate; 6. a disc; 61. a rubber collar; 62. a breather pipe; 63. a hose.

Detailed Description

In order to make the objects, technical means and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a seamless welding machining center, which solves the technical problems that the mechanical property and the corrosion resistance of weld metal are reduced due to the welding defect caused by the burning loss of alloy elements because the weld metal on the back surface is oxidized in the welding process when a pipeline is welded; and the technical problem of unstable welding caused by heat retention inside the pipeline in the welding process.

In order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: through set up cooling protection mechanism in the device, when weldment work goes on, cooling protection mechanism can drive the pipeline and rotate, can realize like this that three hundred sixty degrees weld in two sets of pipeline contact departments under the circumstances that the soldered connection does not change, cooling protection mechanism still can let in through refrigerated inert gas toward pipeline inside simultaneously, prevent that the welding seam metal at the pipeline back is at welding in-process oxidation when the welding, the loss of alloying element scaling produces welding defect, thereby cause the bad situation problem that the mechanical properties and the corrosion resistance of welding seam metal descend, and can ensure welding process's stability when the pipeline is inside through refrigerated inert gas, reduce thermal delay, optimize pipeline welding's effect.

Referring to fig. 1 to 8, the present invention provides a technical solution:

the utility model provides a seamless welding machining center, includes workstation 1, 1 upper surface middle part rear end position sliding connection of workstation has branch 11, branch 11 is the type of falling L and its terminal lower fixed surface is connected with electric telescopic handle 12, terminal surface fixedly connected with electric welding head 13 under electric telescopic handle 12, 1 up end left side position in workstation is provided with cooling protection mechanism 4.

Through set up cooling protection mechanism 4 in the device, when weldment work goes on, cooling protection mechanism 4 can cooperate other parts to drive a welding piece and rotate, can realize like this that three hundred sixty degrees weld at two sets of welding piece contact departments under the circumstances that the soldered connection does not rotate, cooling protection mechanism 4 still can let in through refrigerated inert gas toward welding piece inside simultaneously, inert gas is not reacted with the metal under the high temperature, isolated metal and air, reduce the degree that the metal is oxidized, thereby reduce the welding defect that the welding seam metal at the welding piece back burns out the production at welding process oxidation alloy element, thereby cause the bad situation problem that the mechanical properties and the corrosion resistance of welding seam metal descend, and can ensure welding process's stability when welding piece inside through refrigerated inert gas flows through, reduce thermal delay, optimize welded effect.

As an embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, two sets of brackets 21 are fixedly connected to the middle of the upper end surface of the working table 1 in a bilateral symmetry manner, the upper end surfaces of the two sets of brackets 21 are fixedly connected with fixed bearings 22, the inner surfaces of the two sets of fixed bearings 22 are fixedly connected with fixed cylinders 23, the length of each fixed cylinder 23 is greater than that of the corresponding fixed bearing 22, the two ends of each fixed cylinder 23 are of a conical gear structure, three sets of fixed assemblies 24 are annularly and equidistantly arranged on the fixed cylinders 23 at the two sides of the fixed bearings 22, each fixed assembly 24 includes a cylindrical block 241, a first push rod 242, a second push rod 243, an arc-shaped elastic sheet 244, a return spring 245 and a cylindrical groove 246, the fixed cylinder 23 is located two sides of the fixed bearing 22 and is symmetrically arranged and fixedly connected with three groups of cylindrical blocks 241 in an annular equidistant mode, three groups of cylindrical blocks 241 are all provided with cylindrical grooves 246, the middle of the bottom end of each cylindrical groove 246 is fixedly connected with a return spring 245, the upper end of each return spring 245 is fixedly connected with a push rod 243, the two push rods 243 and the cylindrical blocks 241 are connected in a sliding mode, the upper ends of the two push rods 243 are fixedly connected with arc-shaped elastic pieces 244, one end of the cylindrical block 241, far away from the arc-shaped elastic pieces 244, is connected with a push rod 242 in a threaded transmission mode, the left side and the right side are two groups of fixed cylinders 23 are located between six groups of arc-shaped elastic pieces 244 in an all sliding mode and are connected with pipelines 3, and scales are marked on the annular outer surfaces of the push rods 242.

By adopting the technical scheme, before welding, a pipe 3 is inserted into the left fixed cylinder 23, because the diameter of the pipe 3 is smaller than that of the fixed cylinder 23, the bottoms of the push rods 243 in the three groups of fixed assemblies 24 on both sides of the fixed bearing 22 are close to the part far away from the arc-shaped elastic sheet 244 in the cylindrical groove 246 under the pulling force of the return spring 245 in the initial state, a distance is reserved between the top end of the push rod 242 and the bottoms of the push rods 243, after the pipe 3 enters the fixed cylinder 23, the three groups of push rods 242 on both sides of the fixed bearing 22 are rotated to enable the push rod 242 to spirally move to the inside of the cylindrical groove 246 towards the direction of the pipe 3, the push rod 242 is then contacted with the push rods 243 and can slowly push the push rods 243 to move towards the direction close to the pipe 3, and the return spring 245 is in a stretching state in the process, finally, the arc-shaped elastic sheet 244 fixedly connected to the top end of the second push rod 243 is tightly attached to the pipeline 3, and the six groups of first push rods 242 can not perform spiral transmission any more, so that the left pipeline 3 is fixed, the positions of the scales on the four groups of first push rods 242 positioned at the two sides of the fixed bearing 22 at the lower end of the left fixed cylinder 23 are observed, the scales arranged on the annular outer surface of the first push rod 242 can record the number of rotating turns, an arrow mark is arranged at the position close to the cylindrical block 241, the scales on the annular outer surface of the first push rod 242 are divided into 0-degree scale lines aligned with the arrow mark in the initial state of 0-degree to 360-degree, the number of turns of the 0-degree scale lines rotated relative to the arrow mark is manually calculated in the rotating process, the number of incomplete rotation is calculated in the last turn, the total number of rotation is finally calculated, the push rods 242 at the lower ends of the rest fixed cylinders 23 are ensured to rotate by the same angle, and then the other pipeline 3 is inserted into the fixed cylinder 23 on the right support 21, promote right side pipeline 3 and remove to the direction that is close to left side pipeline 3 until two pipeline 3 tops are closely laminated, because the position of lower extreme push rod 242 has already been adjusted, adjust the position of two sets of push rods 242 on the fixed section of thick bamboo 23 upper end of right side with reference to the scale of two sets of push rods 242 on the fixed section of thick bamboo 23 upper end in left side after that to accomplish the fixed to right side pipeline 3, prepare for welding work.

As an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 4 and fig. 5, the cooling protection mechanism 4 includes a motor frame 40, a right-angle motor 41, a column 411, a transmission wheel 412, a first bevel gear 42, a support plate 43, a second bevel gear 431 and a transmission belt 44, the motor frame 40 is fixedly connected to the upper end surface of the workbench 1 near the left end bracket 21, the right-angle motor 41 is fixedly connected to the upper end surface of the motor frame 40, the column 411 is fixedly connected to an output shaft at the upper end of the right-angle motor 41, the first bevel gear 42 is fixedly connected to the upper end of the column 411, the first bevel gear 42 is engaged with the right end of the left side fixed cylinder 23, the support plate 43 is fixedly connected to the middle portion of the right end surface of the right side bracket 21, the upper end surface of the support plate 43 is rotatably connected to the upper end of the column 411 through a bearing, the second bevel gear 431 is fixedly connected to the upper end of the support plate 43, the second bevel gear 431 is engaged with the right end of the right side fixed cylinder 23, the outer annular surfaces of the two groups of the posts 411 are fixedly connected with driving wheels 412, a driving belt 44 is rotatably connected between the two groups of the driving wheels 412, the cooling protection mechanism 4 further comprises an annular block 45, a guide block 451, an L-shaped rod 46, a sliding block 461, an arc-shaped block 47 and a sliding rod 471, the output shaft at the right end of the right-angle motor 41 is fixedly connected with the L-shaped rod 46, the right-angle motor 41 is a double-output-shaft motor, the annular block 45 is fixedly connected at the position corresponding to the right-end output shaft on the right end surface of the right-angle motor 41, the two groups of the guide blocks 451 are vertically and symmetrically and fixedly connected with the upper end surface and the lower end surface of the annular block 45 through an oblique rod, the sliding rods 471 are slidably connected inside the upper and lower groups of the guide blocks 451, the sliding rod 471 is divided into an upper section and a lower section, the arc-shaped block 47 is fixedly connected between the upper and the lower section of the sliding rod 471, and the tail end of the L-shaped rod 46 is rotatably connected with the sliding block 461 through a bearing, the sliding block 461 is connected with the arc-shaped groove arranged in the arc-shaped block 47 in a sliding way.

By adopting the above technical scheme, when welding, turn on the switch of right angle motor 41, the output shaft of the upper end of right angle motor 41 can drive left side post rod 411 to rotate, because connect through drive belt 44 between the left and right sides post rod 411, right side post rod 411 also can rotate when left side post rod 411 rotates, simultaneously the conical gear 42 and conical gear two 431 at the top of two post rods 411 also can rotate along with it, because conical gear 42 and conical gear two 431 are respectively in the meshing of the one end of left and right sides fixed cylinder 23, so left and right sides fixed cylinder 23 can rotate and drive pipeline 3 to carry out synchronous rotation when right angle motor 41 works, prepare for welding work, the output shaft of its right-hand member can drive L type pole 46 to rotate when right angle motor 41 works, slider 461, the end of which is connected through bearing rotation when L type pole 46 rotates, can rotate in the inside arc-shaped slot of arc-shaped block 47 and drive arc-shaped block 47 to move up and down, prepare for the following protection work.

As an embodiment of the present invention, as shown in fig. 1, fig. 6, fig. 7 and fig. 8, a box 49 is fixedly connected to a lower end surface of the table 1, a push rod third 48 is fixedly connected to a lower end of the slide rod 471, a piston 481 is fixedly connected to a lower end of the push rod third 48, through pipes 492 are connected to lower ends of left and right sides of the box 49, four walls and a bottom end surface of the box 49 are hollow, a convolute pipe 491 is fixedly connected to an inner wall of the hollow wall of the box 49, the convolute pipe 491 is in an S-shaped convolute design, a top end of the convolute pipe 491 passes through an outer wall of a rear upper end of the box 49, an external air source is fixedly connected to a top end of the convolute pipe 491 near the rear end of the box 49, a tail end of the convolute pipe 491 penetrates through an outer wall of a lower end of the front end of the box 49, hoses 63 are fixedly connected to outer ends of the left and right sets of through pipes 492, a disc 6 is rotatably connected to the other ends of the two sets of the hoses 63 through bearings, a rubber collar 61 is fixedly connected to edges of the other ends of the two sets of the other ends of the discs 6, a right end surface of the discs 6 is through a breather pipe 62, the two sets of the discs 6, the two sets of the rubber collar 61 are slidably connected to an outer surface of the pipe collar is fixedly connected to an outer surface of the pipe 3, and the cooling protection baffle 5 is connected to an adjacent to the bracket 21.

By adopting the technical scheme, before the power switch of the right-angle motor 41 is turned on, the two disks 6 are firstly taken to the positions corresponding to the left end and the right end of the pipeline 3, then the rubber clamping rings 61 on the disks 6 are sleeved on the outer surface of the pipeline 3, the rubber clamping rings 61 have certain elasticity, so that the disks can be clamped at the ports of the pipelines 3 with different specifications, after the pipelines 3 at the two ends are clamped, a relatively closed space is formed inside the two pipelines 3, the valve of the vent pipe 62 of the disk 6 at the right side is opened, inert gas is introduced, because the top end of the hose 63 is provided with the one-way valve, the inert gas only enters the two pipelines 3 firstly after entering the pipelines 3, then the valve of the vent pipe 62 is closed, the supporting rod 11 is moved to the welding position, then the electric telescopic rod 12 is controlled to move the electric welding head 13 downwards to be contacted with the joint of the two pipelines 3, and the switch of the electric welding head 13 is turned on for welding work, at the same time, the right-angle motor 41 is started, the right-angle motor 41 drives the left and right fixed cylinders 23 to drive the two pipelines 3 to synchronously rotate, when the right-angle motor 41 works, the output shaft at the right end thereof drives the slide bar 471 fixedly connected with the upper and lower arc end faces of the arc block 47 to slide up and down in the upper and lower groups of guide blocks 451, because the lower slide bar 471 is fixedly connected with the push bar III 48, when the slide bar 471 moves up and down, the push bar III 48 drives the piston 481 to move up and down in the box 49, when the right-angle motor 41 works, cold air is continuously introduced into the spiral pipe 491 from the outside, when the cold air flows in the spiral pipe 491, the inside of the box 49 is cooled, and when the piston 481 moves down in the box 49, sufficient inert gas is introduced into the box 49, when the piston 481 moves down in the box 49, the inert gas is extruded, because the inside of the left and right groups of through pipes 492 at the lower end of the box 49 is provided with one-way valves, the low-temperature inert gas subjected to extrusion force can only move from the inside of the right-side through pipe 492, and then enters the inside of the pipe 3 along the right-side hose 63, the low-temperature inert gas flowing into the inside of the pipe 3 can protect the pipe 3 when the pipe 3 is welded, the weld metal on the back of the pipe 3 during welding is prevented from being oxidized in the welding process, when the push rod three 48 drives the piston 481 to move upwards in the box 49, a certain suction force is generated inside the box 49, because the check valves are arranged inside the left and right groups of through pipes 492 at the lower end of the box 49, a certain amount of inert gas can be sucked from the inside of the pipe 3 through the left-side hose 63 to supplement inside the box 49, because the low-temperature inert gas is in a flowing state inside the pipe 3, the low-temperature inert gas can not only protect the pipe 3 but also take away part of heat, the retention of heat is reduced, the welding process is more stable, the electric welding process can be synchronized with the electric welding process and the refrigeration process without an external power device, when the rotary welding of the pipe 3 is stopped, the inert gas can be immediately stopped from being input into the inert gas and the high-temperature scrap iron, the high-temperature splashing protection device can be prevented from being damaged, the high-temperature splashing.

The working principle is as follows: firstly, a pipe 3 is inserted into the left fixed cylinder 23, because the diameter of the pipe 3 is smaller than that of the fixed cylinder 23, the bottoms of the push rods 243 in the three groups of fixed assemblies 24 at the two sides of the fixed bearing 22 are both close to the part far away from the arc-shaped elastic sheet 244 in the cylindrical groove 246 under the pulling force of the return spring 245 in the initial state, a distance is reserved between the top end of the push rod 242 and the bottoms of the push rods 243, after the pipe 3 enters the fixed cylinder 23, the three groups of push rods 242 at the two sides of the fixed bearing 22 are rotated to enable the push rods 242 to spirally move to the inside of the cylindrical groove 246 towards the direction of the pipe 3, the push rods 242 are then contacted with the push rods 243 and can slowly push the push rods 243 to move towards the direction close to the pipe 3, the return spring 245 is in a stretching state in the process, finally, the arc-shaped elastic sheet 244 fixedly connected with the top ends 243 of the push rods is tightly attached to the pipe 3, and the six groups of push rods 242 can not perform spiral transmission any more, the process finishes the fixation of the left pipeline 3, observes the positions of the scales on the four groups of push rod one 242 at the two sides of the fixed bearing 22 at the lower end of the left fixed cylinder 23, and the scales arranged on the annular outer surface of the push rod one 242 can record the number of rotating circles, specifically, the scales of two grids correspond to the number of rotating circles, and screws the push rod one 242 at the lower end of the right fixed cylinder 23 to the position corresponding to the scales of the left side according to the calculated number of the circles, then inserts another pipeline 3 into the fixed cylinder 23 on the right bracket 21, pushes the right pipeline 3 to move towards the direction close to the left pipeline 3 until the top ends of the two pipelines 3 are tightly attached, and adjusts the positions of the two groups of push rod one 242 at the upper end of the right fixed cylinder 23 by referring to the scales of the two groups of push rod one 242 at the upper end of the left fixed cylinder 23 after the position of the push rod one 242 at the lower end of the left fixed cylinder 23 is adjusted, thereby completing the fixation of the right pipeline 3 and preparing for welding work;

then, the two disks 6 are taken to the positions corresponding to the left end and the right end of the pipeline 3, the rubber clamping rings 61 on the disks 6 are sleeved on the outer surface of the pipeline 3, the rubber clamping rings 61 have certain elasticity and can be clamped at the ports of the pipelines 3 with different specifications, after the clamping work of the pipelines 3 at the two ends is completed, a relatively closed space is formed inside the two pipelines 3, a valve 62 of the vent pipe 6 at the right side is opened, a certain amount of inert gas is introduced, because the top end of the hose 63 is provided with the one-way valve, the inert gas only enters the two pipelines 3 after entering the pipelines 3, then the valve of the vent pipe 62 is closed, the support rod 11 is moved to the welding position, then the electric telescopic rod 12 is controlled to move the electric welding head 13 downwards to be in contact with the joint of the two pipelines 3, the switch of the electric welding head 13 is opened for welding work, meanwhile, the power switch of the right-angle motor 41 is opened, the output shaft of the right-angle motor 41 drives the upper end 411 of the column rod at the left side to rotate, because the left side pole 411 and the right side pole 411 are connected through the transmission belt 44, the right side pole 411 rotates when the left side pole 411 rotates, meanwhile, the first conical gear 42 and the second conical gear 431 at the top ends of the two poles 411 rotate along with the rotation, because the first conical gear 42 and the second conical gear 431 are respectively meshed with one end of the left side fixed cylinder 23 and one end of the right side fixed cylinder 23, when the right-angle motor 41 works, the left side fixed cylinder 23 and the right side fixed cylinder 23 rotate and drive the pipeline 3 to synchronously rotate, preparation is made for welding work, when the right-angle motor 41 works, the output shaft at the right end of the right-angle motor 41 drives the L-shaped rod 46 to rotate, when the L-shaped rod 46 rotates, the sliding block 461 rotatably connected at the tail end through the bearing rotates in the arc-shaped groove in the arc-shaped block 47 and drives the arc-shaped block 47 to move up and down, and therefore the sliding rod 471 fixedly connected with the upper and lower arc-shaped end faces of the arc-shaped block 47 slides up and down in the upper and lower two groups of guide blocks 451 Because the lower sliding rod 471 is fixedly connected with the push rod tri-48, when the sliding rod 471 moves up and down, the push rod tri-48 can drive the piston 481 to move up and down in the box 49, when the right-angle motor 41 works, cold air is continuously introduced into the coiled pipe 491 from the outside, when the cold air flows in the coiled pipe 491, the temperature in the box 49 can be reduced, when in an initial state, sufficient inert gas is introduced into the box 49, when the piston 481 moves down in the box 49, the inert gas can be squeezed, because the check valves are arranged in the left and right groups of through pipes 492 at the lower end of the box 49, the low-temperature inert gas which is subjected to squeezing force can only move from the right side through pipe 492 and then enters the inside of the pipeline 3 along the right side hose 63, the low-temperature inert gas which flows into the inside of the pipeline 3 can play a role in protecting the pipeline 3 when the pipeline 3 is welded, and the weld metal on the back side of the pipeline 3 is prevented from being oxidized in the welding process, when the third push rod 48 drives the piston 481 to move upwards in the box 49, a certain suction force is generated in the box 49, because the two sets of through pipes 492 are all provided with one-way valves at the left and right of the lower end of the box 49, a certain amount of inert gas is sucked from the inside of the pipeline 3 through the left hose 63 to supplement the inside of the box 49, and because the low-temperature inert gas is in a flowing state in the pipeline 3, the low-temperature inert gas can not only protect the pipeline 3, but also can take away a part of heat, thereby reducing the retention of heat, and enabling the welding process to be more stable, the design of the structure can enable the electric welding process to be synchronous with the inert gas and the refrigeration process without an external power device, when the pipeline 3 is stopped to be rotatably welded, the input of the low-temperature inert gas into the pipeline 3 can be immediately stopped, the operation is simple, and the device is more integrated, and the baffle 5 can play a certain role of protecting the parts such as the transmission belt 44 and the right-angle motor 41 in the welding process The device is prevented from being damaged by high-temperature splashing scrap iron generated during welding.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a seamless welding machining center, includes workstation (1), its characterized in that: workstation (1) upper surface middle part rear end position sliding connection has branch (11), branch (11) are the type of falling L and its terminal lower fixed surface is connected with electric telescopic handle (12), terminal surface fixedly connected with electric welding head (13) under electric telescopic handle (12), workstation (1) upper end position to the left side is provided with cooling protection mechanism (4).

2. The seamless welding machining center according to claim 1, wherein: workstation (1) up end middle part bilateral symmetry fixedly connected with two sets of supports (21), two sets of support (21) the equal fixedly connected with fixing bearing (22) of up end, it is two sets of fixing bearing (22) the equal fixedly connected with solid fixed cylinder (23) of internal surface, solid fixed cylinder (23) length value is greater than fixing bearing (22) length value, gu fixed cylinder (23) both ends are the conical gear structure, gu fixed cylinder (23) are located fixing bearing (22) both sides position equal annular equidistance and are provided with three fixed subassemblies of group (24).

3. The seamless welding machining center according to claim 2, wherein: the fixing assembly (24) comprises cylindrical blocks (241), a first push rod (242), a second push rod (243), an arc-shaped elastic sheet (244), a return spring (245) and a cylindrical groove (246), and the fixing cylinder (23) is symmetrically arranged on two sides of the fixing bearing (22) and is fixedly connected with three groups of cylindrical blocks (241) in a penetrating mode in an annular and equidistant mode;

three groups cylindrical block (241) inside all seted up cylindrical groove (246), cylindrical groove (246) bottom middle part fixedly connected with reset spring (245), reset spring (245) upper end fixedly connected with push rod two (243), sliding connection between push rod two (243) and cylindrical block (241), push rod two (243) upper end fixedly connected with arc shell fragment (244), the one end middle part screw thread transmission that arc shell fragment (244) was kept away from in cylindrical block (241) is connected with push rod one (242), controls two sets of fixed section of thick bamboo (23) inside is located equal sliding connection between six groups of arc shell fragments (244) has pipeline (3).

4. A seamless welding machining center according to claim 3, characterized in that: scales are marked on the annular outer surface of the first push rod (242).

5. The seamless welding machining center according to claim 1, wherein: the cooling protection mechanism (4) comprises a motor frame (40), a right-angle motor (41), a pole (411), a transmission wheel (412), a first bevel gear (42), a support plate (43), a second bevel gear (431) and a transmission belt (44), the motor frame (40) is fixedly connected to the position, close to the left end support (21), of the upper end face of the workbench (1), and the right-angle motor (41) is fixedly connected to the upper end face of the motor frame (40);

the upper end output shaft of the right-angle motor (41) is fixedly connected with a column rod (411), the upper end of the column rod (411) is fixedly connected with a first conical gear (42), the first conical gear (42) is meshed with the right end of a left fixed cylinder (23), the right side is fixedly connected with a support plate (43) in the middle of the right end face of the support (21), the upper end of the support plate (43) is rotatably connected with a second conical gear (431) through a bearing, the second conical gear (431) is meshed with the right end of the right fixed cylinder (23), two groups of transmission wheels (412) are fixedly connected to the annular outer surface of the column rod (411), and a transmission belt (44) is rotatably connected between the two groups of transmission wheels (412).

6. The seamless welding machining center of claim 5, wherein: the cooling protection mechanism (4) further comprises an annular block (45), a guide block (451), an L-shaped rod (46), a sliding block (461), an arc-shaped block (47) and a sliding rod (471), wherein the L-shaped rod (46) is fixedly connected with an output shaft at the right end of the right-angle motor (41), and the annular block (45) is fixedly connected with the right end surface of the right-angle motor (41) at a position corresponding to the output shaft at the right end;

the end surface passes through two sets of guide blocks (451) of down-and-up symmetry fixedly connected with of down-tilting rod about annular piece (45), and upper and lower two sets of guide block (451) inside sliding connection has slide bar (471), slide bar (471) divide into two sections from top to bottom, fixedly connected with arc piece (47) between two sections upper and lower slide bars (471), L type pole (46) end rotates through the bearing and is connected with slider (461), sliding connection between the inside arc wall of seting up of slider (461) and arc piece (47).

7. The seamless welding machining center of claim 6, wherein: the adjacent surfaces of the two groups of brackets (21) are fixedly connected with a baffle (5) at the position above the cooling protection mechanism (4).

8. The seamless welding machining center of claim 6, wherein: the lower end face of the workbench (1) is fixedly connected with a box body (49), the lower end of the sliding rod (471) is fixedly connected with a third push rod (48), the lower end of the third push rod (48) is fixedly connected with a piston (481), and the lower ends of the left side and the right side of the box body (49) are in through connection with a through pipe (492).

9. The seamless welding machining center of claim 8, wherein: the box body (49) is characterized in that four walls and the bottom end face of the box body (49) are arranged in a hollow mode, a spiral pipe (491) is fixedly connected to the inner portion of the hollow wall body of the box body (49), the spiral pipe (491) is in an S-shaped spiral design, the top end of the spiral pipe (491) penetrates through the outer wall of the upper end of the rear side of the box body (49), and the tail end of the spiral pipe (491) penetrates through the outer wall of the lower end of the front side of the box body (49).

10. The seamless welding machining center of claim 9, wherein: two sets of siphunculus (492) outer end equal fixedly connected with hose (63) about box (49), two sets of hose (63) the other end all rotates through the bearing and is connected with disc (6), two sets of disc (6) other end edge fixedly connected with rubber rand (61), right side disc (6) right-hand member face through connection has breather pipe (62), and is two sets of rubber rand (61) slip cup joint at pipeline (3) tip surface.

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