CN214816058U

CN214816058U - Pipe fitting welding set

Info

Publication number: CN214816058U
Application number: CN202121770777.8U
Authority: CN
Inventors: 成彦杰
Original assignee: Beris Engineering and Research Corp
Current assignee: Beris Engineering and Research Corp
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-11-23
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to a pipe fitting processing technology field specifically discloses a pipe fitting welding set, including work platform, fixed mounting has the support frame on the work platform, and support frame upper portion rotates through the bearing and installs the threaded rod, and support frame top fixed mounting has a support diaphragm, installs on the support diaphragm to be used for driving threaded rod pivoted drive assembly, and slidable mounting has the lead screw slider on the threaded rod, and it has the movable rod to articulate on the lead screw slider, and the other end of movable rod articulates the connecting plate, and the bottom fixed mounting of connecting plate has the welding machine. Still fixed mounting has the pointer on the connecting plate, and the terminal cooperation of pointer is provided with the scale, and scale fixed mounting is on the support frame. And the working platform is also provided with a rotating assembly and a dust collecting assembly for assisting welding work.

Description

Pipe fitting welding set

Technical Field

The utility model relates to a pipe fitting processing technology field, concretely relates to pipe fitting welding set.

Background

The pipe fittings are general names of parts which play roles in connection, control, diversion, sealing, support and the like in a pipeline system, and the steel pipe fittings are pressure-bearing pipe fittings and are mainly divided into four types of pipe fitting connection modes, namely butt welding connection, socket welding connection, threaded connection and flange connection according to different processing technologies.

And in the welding process technology, most current pipe fitting welding set, can't be according to the position of treating the accurate adjustment welding machine of size of welded pipe spare, thereby lead to the welding effect not good, influence the normal use of pipe spare, and the pipe spare often can not convenient adjustment in welding process treats the welding position, bring a great deal of inconvenience for the weldment work personnel, and simultaneously, most current pipe fitting welding set, welding residue and dust that can not be timely are collected, lead to operational environment dirty and disorderly, therefore, to above current situation, an urgent need develops a pipe fitting welding set, in order to overcome not enough in the current practical application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipe fitting welding set to solve the technical problem who proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pipe welding apparatus comprising: a frame.

The frame includes: the supporting leg, by the work platform of supporting leg support, set up the support frame in work platform top.

The frame is from last fixedly connected with welding machine actuating system, pipe fitting fixed system down.

The welding machine driving system is provided with a plurality of lifting modes to be connected with a control connecting plate, and the welding machine is fixed through the connecting plate; the pipe fitting fixing system is arranged below the welding machine and comprises a rotating mechanism which is horizontally and coaxially arranged, an air bag is arranged in the rotating mechanism, and the air bag wraps and fixes the pipe fitting to be welded.

The welder drive system includes: a telescopic lifting mechanism and a lead screw slide block lifting mechanism.

The screw rod sliding block lifting mechanism is provided with a horizontal threaded rod, and the threaded rod is provided with a left threaded section and a right threaded section; the left side screw thread section and the right side screw thread section are opposite in rotating direction, screw rod sliding blocks are arranged on the left side screw thread section and the right side screw thread section respectively, the screw rod sliding blocks are connected with movable rods, and the lower ends of the movable rods are hinged to the connecting plate.

The telescopic lifting mechanism adopts a longitudinal telescopic rod structure; the top end of the telescopic rod structure is fixedly connected with a supporting transverse plate at the top of the frame, and the bottom end of the telescopic rod structure is fixedly connected with the connecting plate.

The pipe fitting fixing system is arranged on a horizontal working platform in the middle of the frame and comprises a fixing table; the fixed table is provided with a dust collecting port and a supporting block.

The pipe fitting securing system includes a first motor; the first motor is connected with a gear transmission system, and the gear transmission system is connected with a rotating mechanism.

The supporting block is a rectangular block-shaped supporting part, and different shapes are arranged on the top surface of the supporting block according to the cross section shape of the pipe fitting to be welded so as to meet the requirements of welding operation.

The rotating mechanism is sequentially provided with a transmission bearing, a rotating ring and an air bag from outside to inside; the axial width of the rotating ring is larger than that of the transmission bearing, and the outer side face of one end, exceeding the transmission bearing, of the rotating ring is provided with inclined teeth.

A dust collecting operation system is also arranged below the horizontal working platform in the middle of the frame; the dust collecting operation system comprises: the dust collection box is of a cuboid structure with an open top, a slag discharge port is further formed in the bottom of the rear side face of the cuboid structure, and symmetrical ventilation openings are formed in the left side face and the right side face of the cuboid structure.

The dust collection box is arranged under the pipe fitting fixing system, is communicated with a dust collection port on the fixing platform through an opening at the top, and penetrates through the working platform and the fixing platform of the frame.

The utility model has the advantages that:

(1) in one or more embodiments of the utility model, the driving component drives the threaded rod to rotate, so that the screw rod slide block slides left and right on the threaded rod; the connecting plate is enabled to move up and down, and the function of adjusting the height of the welding machine according to the specification of the pipe fitting to be welded is achieved, so that the position of the welding machine is flexibly adjusted above the working platform, and the welding operation efficiency and the welding effect are greatly improved.

(2) The utility model discloses a one or more embodiment the subassembly that gathers dust carries out centralized processing with various residues and dust that produce in the welding operation, has guaranteed the sanitation and hygiene of work all ring edge borders.

(3) The utility model discloses a pipe fitting is treated to one or more embodiment can rotate as required to the welding position of adjustment pipe fitting has made things convenient for the welding machine to carry out the operation of welding, and can get rid of the human factor, good assurance welding precision.

(4) The utility model discloses a cooperation of pointer and scale is passed through to one or more embodiments, and the staff of being convenient for accurately observes the welding machine and treats the high situation of welded tube spare, further improves welded accuracy, the operation of welding of being more convenient for staff.

(5) The utility model discloses an one or more embodiment the runner assembly can fasten according to the size of pipe diameter, has improved the application scope and the practicality of equipment greatly.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

FIG. 1 is a front view of the overall structure of one or more embodiments of the present invention;

FIG. 2 is a side view of a drive bearing portion according to one or more embodiments of the present disclosure;

FIG. 3 is an enlarged schematic perspective view of a portion of a retaining table portion according to one or more embodiments of the present disclosure;

fig. 4 is a side view of the overall structure in one or more embodiments of the invention;

the device comprises a working platform 1, a working platform 2, supporting legs 3, supporting rods 4, a slag discharge port 5, a dust collection box 6, a ventilation opening 7, an air pump 8, an air pipe 9, a supporting frame 10, a first motor 11, a transmission shaft 12, a bevel gear 13, a fixed cushion block 14, a transmission bearing 15, a rotating ring 16, helical teeth 17, a supporting block 18, a fixed table 19, a dust collection port 20, a supporting bearing 21, a scale 22, a pointer 23, a ball 24, an air bag 25, an air inlet 26, a connecting plate 27, a movable rod 28, a screw rod slider 29, a threaded rod 30, a guide slider 31, a supporting transverse plate 32, a guide sliding sleeve 33, a sliding rod 34, a base 35, a second motor 36, a driving gear 37, a driven gear 38, a welding machine 39 and an inflation port.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The terms "mounted," "connected," "fixed," and the like in this application are to be construed broadly, e.g., as meaning a fixed connection, a detachable connection, or an integral connection; the connection may be direct, indirect through an intermediate medium, an internal connection between two elements, or an interaction relationship between two elements; for those skilled in the art, the above terms can be understood according to specific situations, and should not be construed as limiting the present invention.

The first embodiment is as follows:

the present invention will be described in detail with reference to the accompanying drawings, and the specific structure is as follows:

the embodiment provides a pipe fitting welding set, includes: a working platform 1, a supporting frame 9 is fixedly arranged on the working platform 1, a threaded rod 29 is rotatably arranged on the supporting frame 9 through a bearing, the screw thread turning directions of the two sides of the threaded rod 29 are opposite, a supporting transverse plate 31 is fixedly arranged on the supporting frame 9, a driving component for driving the threaded rod 29 to rotate is arranged on the supporting transverse plate 31, a screw rod sliding block 28 is arranged on the threaded rod 29 in a sliding manner, a movable rod 27 is hinged on the screw rod slide block 28, one end of the movable rod 27 is hinged with a connecting plate 26, the bottom end of the connecting plate 26 is fixedly provided with a welding machine 38, the pointer 22 is fixedly arranged on the connecting plate 26, a graduated scale 21 is arranged at one end of the pointer 22 in a matching way, the graduated scale 21 is fixedly arranged on the support frame 9, and the working platform 1 is also provided with a rotating assembly and a dust collecting assembly for assisting welding work.

The screw rod 29 can be driven to rotate by the arranged driving component, the screw rod sliding block 28 can slide left and right on the screw rod 29, the connecting plate 26 can move up and down by the transmission action of the arranged movable rod 27, the height of the welding machine 38 can be adjusted according to the position of a pipe to be welded, the horizontal position and the vertical position of the welding machine can be flexibly adjusted, and the welding efficiency and the welding effect are greatly improved; through the cooperation of pointer 22 and scale 21 that sets up, the staff of being convenient for observes welding machine 38 and treats the height of welded tube spare, can further improve welded precision to provide convenience for welding work, through the subassembly that gathers dust that sets up, can carry out centralized processing with various residues and dust that produce in the welding work, keep the sanitation and hygiene of work surrounding environment, through the runner assembly work that sets up, make welding set can fasten according to the size of pipe diameter, has improved the practicality of equipment, makes operation process more simple and convenient, and can rotate as required and treat the welded tube spare, with the welding position of adjustment pipe spare, be favorable to welding machine 38 to carry out welding work, and can get rid of the human factor, effectively guaranteed the welding precision.

Example two:

this embodiment provides a pipe welding set, the quantity of threaded rod 29 is two, fixed mounting has direction slide rail 30 and slide bar 33 on the support diaphragm 31, slidable mounting has lead screw slider 28 on the direction slide rail 30, slide bar 33 slidable mounting is in direction sliding sleeve 32, the one end fixed mounting of direction sliding sleeve 32 is on connecting plate 26, and the quantity of direction sliding sleeve 32 is two sets to guarantee the stability of welding machine 38 during operation.

Fixed mounting has fixed station 18 in the upper end middle part of work platform 1, fixed mounting has supporting shoe 17 on the fixed station 18, the quantity of supporting shoe 17 is two, mouth 19 that gathers dust has been seted up at the middle part of fixed station 18 to the dust that produces when being convenient for the welding falls into the subassembly that gathers dust through mouthful 19 that gathers dust, fixed mounting has supporting leg 2 on work platform 1, the quantity of supporting leg 2 is four.

The rotating assembly comprises a first motor 10, a transmission shaft 11, helical gears 12 and supporting bearings 20, wherein the first motor 10 is fixedly installed on the working platform 1, the transmission shaft 11 is fixedly installed at the output end of the first motor 10, the helical gears 12 are fixedly installed on the transmission shaft 11, the number of the helical gears 12 is two, the supporting bearings 20 are rotatably installed on the transmission shaft 11, and the supporting bearings 20 are fixedly installed on the working platform 1.

Fixed mounting has fixed cushion 13 on work platform 1, fixed mounting has drive bearing 14 on the fixed cushion 13, fixed mounting has a plurality of ball 23 in the drive bearing 14, it is connected with swivel becket 15 to rotate on the ball 23, fixed mounting has gasbag 24 on the swivel becket 15, scribble the heat-insulating material on the gasbag 24, the last fixed mounting that goes back of gasbag 24 has air inlet 25, be equipped with sealing device on the air inlet 25, the width of swivel becket 15 is greater than drive bearing 14's width, has seted up skewed tooth 16 on the one end outward flange of swivel becket 15, skewed tooth 16 meshes and connects helical gear 12, drive bearing 14's quantity is two sets.

Zero scale of scale 21 and the horizontal top surface of fixed station 18 are located same horizontal plane, still fixed mounting has air pump 7 on work platform 1, fixed mounting has gas-supply pipe 8 on the output of air pump 7, the material of gas-supply pipe 8 is plastic hose, and the other end fixed mounting of gas-supply pipe 8 has inflation interface 39, inflation interface 39's size and air inlet 25 cooperation set up, when treating the pipe diameter of welding the pipe fitting less, can be connected inflation interface 39 with air inlet 25 to start air pump 7, be used for aerifing and compressing tightly the pipe fitting in gasbag 24, after inflating, make inflation interface 39 and air inlet 25 separation and sealed air inlet 25, thereby guarantee the steady welding jobs that carries on of small-diameter pipe fitting.

The driving assembly comprises a base 34, a second motor 35, a driving gear 36 and a driven gear 37, the base 34 is fixedly mounted on the supporting transverse plate 31, the second motor 35 is fixedly mounted on the base 34, the driving gear 36 is fixedly mounted on the output end of the second motor 35, the driving gear 36 is in meshed connection with the driven gear 37, the driven gear 37 is fixedly mounted on the threaded rod 29, the diameter of the driving gear 36 is smaller than that of the driven gear 37, and the rotating speed ratio of the driving gear 36 and the driven gear 37 is adjusted by adjusting the gear ratio of the driving gear 36 to the driven gear 37, so that the welding machine 38 is driven by the connecting plate 26 to move up and down smoothly.

The dust collecting assembly comprises a supporting rod 3, a slag discharge port 4, a dust collecting box 5 and ventilation openings 6, wherein the supporting rod 3 is fixedly mounted on a supporting leg 2, the dust collecting box 5 is fixedly mounted on the supporting rod 3, the slag discharge port 4 is fixedly mounted on the dust collecting box 5, a plurality of ventilation openings 6 are further arranged on two sides of the dust collecting box 5, the cross section of each ventilation opening 6 is triangular, and a dust inlet formed in the dust collecting box 5 is connected with a dust collecting port 19 through a hole channel in a working platform 1 so as to facilitate dust collecting work.

Example three:

the embodiment provides a pipe fitting welding set, includes: a frame.

The frame is from last fixedly connected with welding machine actuating system, pipe fitting fixed system, dust collecting operation system down.

The frame includes: the supporting legs 2, the working platform 1 supported by the supporting legs 2 and the supporting frame 9 arranged above the working platform 1.

The supporting legs 2 are used for stably supporting the working platform 1 and the supporting frames 9, the specific number can be correspondingly adjusted according to actual needs, and a four-leg supporting mode is common.

The support frame 9 is used for fixing the welder 38 and the welder driving system above the working platform 1.

The welder drive system includes: the base 34 is fixed above the top supporting transverse plate 31 of the supporting frame 9; a second motor 35 is fixed on the base 34, and the second motor 35 is engaged with a driven gear 37 fixed on the end of the threaded rod 29 through a driving gear 36 fixed on the end of the output shaft of the motor, so that power is transmitted to the threaded rod 29, and the threaded rod 29 is rotated.

Two ends of the threaded rod 29 are fixed on the frame bodies on two sides of the support frame 9 and are rotatably connected with the frame bodies on two sides of the support frame 9; the threaded rod 29 can be a rod body, and the left part and the right part of the threaded rod are respectively provided with a left threaded section and a right threaded section with opposite rotation directions; or two rod bodies are respectively provided with a left-side thread section and a right-side thread section with opposite screwing directions and then are butted together.

The left side thread section and the right side thread section of the threaded rod 29 are respectively provided with a left screw rod sliding block 28 and a right screw rod sliding block 28, the left screw rod sliding block 28 and the right screw rod sliding block 28 are hinged with the upper ends of the left movable rod 27 and the right movable rod 27, and the lower ends of the left movable rod 27 and the right movable rod 27 are respectively hinged with the left side and the right side of the connecting plate 26; for stabilizing the control link 26.

A welding machine 38 is fixedly connected below the connecting plate 26; the pointer 22 is arranged on the left side of the connecting plate 26, and the pointer 22 is matched with the graduated scale 21 arranged on the supporting frame 9 and used for marking the height of the welding machine, so that a good welding distance is effectively guaranteed, and the welding precision is improved.

The telescopic link of the vertical direction of still fixedly connected with on the support frame 9 top support diaphragm 31, the telescopic link includes top and support diaphragm 31 fixed connection's slide bar 33 and cup joints the direction sliding sleeve 32 that reciprocates outside slide bar 33 and along slide bar 33, direction sliding sleeve 32 bottom and connecting plate 26 fixed connection.

Preferably, the telescopic rod can be an electric telescopic rod or a hydraulic telescopic rod.

Preferably, the left-side threaded section and the right-side threaded section of the welding machine 38, the connecting plate 26, the left-right movable rod 27, the left-right screw rod slide block 28 and the threaded rod 29 are respectively in bilateral symmetry along the vertical center line of the frame.

The tubular securement system includes: the fixing table 18 is arranged right below the welding machine 38, and the left side and the right side of the horizontal top surface of the fixing table 18 are respectively provided with a supporting block 17; the dust collecting device is characterized in that a dust collecting port 19 is further formed in the center of the horizontal top face of the fixed table 18, and the dust collecting port 19 penetrates through the fixed table 18 and the working platform 1 and is communicated with a dust collecting operation system below the working platform 1.

The supporting block 17 is a rectangular block-shaped supporting part, and the top surface of the supporting block can be set into different shapes according to the cross section shape of the pipe fitting to be welded so as to meet the requirements of welding operation; preferably, the top surface of the supporting block 17 is a circular arc shape recessed downward.

The fixed table 18 is fixedly arranged on the working platform 1, and the left side and the right side of the fixed table 18 are also provided with fixed cushion blocks 13.

The fixed cushion block 13 is provided with a transmission bearing 14, an inner ring of the transmission bearing 14 is fixedly sleeved with a rotating ring 15, the width of the rotating ring 15 in the direction of the central axis of the transmission bearing 14 is larger than that of the transmission bearing 14, one end of the rotating ring 15 extends out of the outer edge of the transmission bearing 14 to be provided with helical teeth 16, and the helical teeth 16 are meshed with the helical gear 12.

Preferably, the transmission bearing 14, the rotating ring 15 and the helical gear 16 are respectively arranged on two sides of the fixed platform 18 as fixed cushion blocks, the arc-shaped circle centers of the top surfaces of the transmission bearing 14, the rotating ring 15, the helical gear 16 and the supporting block 17 on the fixed platform 18 are coaxially arranged along a first horizontal axis of the working platform 1, the helical gears 12 on two sides are coaxially arranged along a second horizontal axis of the working platform 1, and the second horizontal axis is parallel to the first horizontal axis.

A plurality of balls 23 are fixedly arranged in the transmission bearing 14, and the balls 23 are rotatably connected with the rotating ring 15 in the transmission bearing 14.

Still be provided with gasbag 24 in the swivel 15, the heat insulating material has been scribbled on the gasbag 24, still fixed mounting has air inlet 25 on the gasbag 24, be provided with sealing device on the air inlet 25 for the gasbag 24 is aerifyd the back sealed, the air inlet 25 is connected with air pump 7 through gas-supply pipe 8, air pump 7 sets up respectively in support frame 9 both sides to respectively set up an inflation interface 39 in support frame 9 both sides and the same high department of air inlet 25, aerify for gasbag 24.

And a transmission shaft 11 for supporting the helical gear 12 and fixedly connected with the helical gear 12, a support bearing 20 for supporting the transmission shaft 11 and rotatably connected with the transmission shaft 11, and a first motor 10 for driving the transmission shaft 11 to rotate are also arranged coaxially with the helical gear 12 along the second horizontal axis.

The support bearings 20 are fixed on the working platform 1, and the number can be set according to actual needs.

The dust collecting operation system comprises: a plurality of supporting rods 3 fixed on the supporting legs 2, a plurality of supporting rods 3 are arranged in the same horizontal plane, and can adopt various combination modes such as parallel and cross for fixedly supporting the dust collection box 5 right below the dust collection port 19.

Preferably, the dust collection box 5 is of a conventional cuboid structure with an open top, the bottom of the rear side face of the cuboid structure is further provided with a slag discharge port 4, and the left side face and the right side face of the cuboid structure are provided with symmetrical ventilation ports 6.

Preferably, the ventilation opening 6 may adopt a louver structure.

The working principle is as follows:

the utility model discloses the utilization is fixed in the welding machine actuating system at frame top, the vertical lift of control welding machine 38 to the mode of the three tie point fixed connection board of movable rod 27 and telescopic link about utilizing, through steady, accurate control connection board, and then more steady, accurate control welding machine 38 improves the stability of welding precision and welding machine 38.

In order to cooperate the operation of welding machine 38, the utility model discloses a first motor 10 drive transmission shaft 11, helical gear 12 on the work platform 1 to through the meshing of helical gear 12 with the skewed tooth 16 on the rotating ring 15, drive rotating ring 15 and rotate, and then make and rotating ring 15 fixed connection's gasbag 24 utilize the atmospheric pressure parcel to live and treat the welded tube spare, and with treat that the welded tube spare rotates together, the welding position of welded tube spare is treated in the adjustment, improves welding efficiency.

And simultaneously, work platform 1 below still is provided with the operating system that gathers dust, through the mouth 19 that gathers dust of seting up on the fixed station 18, makes various residues and the dust that produce directly fall into in the dust collection box 5 of work platform 1 below in the weldment work for guarantee operational environment's sanitation and hygiene.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipe welding apparatus, comprising: a frame; the frame is fixedly connected with a welding machine driving system and a pipe fitting fixing system from top to bottom;

2. A pipe welding apparatus as defined in claim 1, wherein said welder drive system comprises: a telescopic lifting mechanism and a lead screw slide block lifting mechanism.

3. A pipe welding device as claimed in claim 2, wherein said screw slider lifting mechanism is provided with a horizontal threaded rod, said threaded rod being provided with a left-hand threaded section and a right-hand threaded section; the left side screw thread section and the right side screw thread section are opposite in rotating direction, screw rod sliding blocks are arranged on the left side screw thread section and the right side screw thread section respectively, the screw rod sliding blocks are connected with movable rods, and the lower ends of the movable rods are hinged to the connecting plate.

4. A pipe welding device as claimed in claim 2, wherein said telescopic lifting mechanism is a longitudinal telescopic rod structure; the top end of the telescopic rod structure is fixedly connected with a supporting transverse plate at the top of the frame, and the bottom end of the telescopic rod structure is fixedly connected with the connecting plate.

5. A pipe welding device as claimed in claim 1, wherein said pipe fixing system is provided on a horizontal work platform in the middle of the frame, comprising a fixing table; the fixed table is provided with a dust collecting port and a supporting block.

6. A pipe welding apparatus as claimed in claim 5, wherein said pipe fixing system comprises a first motor; the first motor is connected with a gear transmission system, and the gear transmission system is connected with a rotating mechanism.

7. A pipe welding device as claimed in claim 5, wherein said supporting block is a rectangular block-shaped supporting member, and the top surface thereof is differently shaped according to the cross-sectional shape of the pipe to be welded to meet the requirements of the welding operation.

8. A pipe fitting welding device as claimed in claim 6, wherein the rotating mechanism is provided with a transmission bearing, a rotating ring and an air bag in sequence from outside to inside; the axial width of the rotating ring is larger than that of the transmission bearing, and the outer side face of one end, exceeding the transmission bearing, of the rotating ring is provided with inclined teeth.

9. A pipe fitting welding device as claimed in claim 5, wherein a dust collecting operation system is further arranged below the horizontal working platform in the middle of the frame; the dust collecting operation system comprises: the dust collection box is of a cuboid structure with an open top, a slag discharge port is further formed in the bottom of the rear side face of the cuboid structure, and symmetrical ventilation openings are formed in the left side face and the right side face of the cuboid structure.

10. The pipe welding device of claim 9, wherein the dust box is disposed directly below the pipe fixing system and communicates with the dust collecting port on the fixing table through the top opening, and penetrates through the work platform and the fixing table of the frame.