Surfacing device

Abstract

The utility model discloses a surfacing device applicable to a multi-caliber shaft system, which is an efficient device integrating a plurality of high-difficulty operation requirements such as workpiece fixing, workpiece overturning, efficient welding, controllable energy input, automatic setting of a welding stroke, stable supporting and the like, and particularly comprises a surfacing device which comprises a rotating device and a welding device, the welding device is arranged on one side of the rotating device; the rotating device comprises a base, a clamping rotating disc, a supporting assembly and a jacking assembly. The clamping rotating disc is arranged at one end of the base, and the supporting assembly and the jacking assembly are arranged on the base and can horizontally move along the base; the clamping rotary disc is used for clamping one end of a workpiece and achieving rotation of the workpiece, the supporting assembly is used for supporting the middle of the workpiece, and the jacking assembly is used for fixing the other end of the workpiece. And the welding device is used for performing surfacing repair on the fixed workpiece.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship shafting repair technical field, concretely relates to a surfacing device. BACKGROUND

[0002] Now ship equipment is numerous, and the ship equipment advocates high speed and high efficiency, and the rotating speed of equipment is very high, and higher requirements are put forward to the strength and precision of shafting, so the damage and deformation of high speed rotating shafting are one of the most common faults of equipment, and the repair of shafting is a very common repair engineering in conventional ship repair. The repair process of shafting is complex, and many shipyards adopt outsourcing for processing, because there are the following difficulties in the maintenance of shafting: 1, the types of shaft parts are various, and the lengths are different, and the sensitivity to thermal stress is also different; 2, shaft repair processing has various tolerance requirements, and the precision requirement is high; 3, manufacturers are not easy to determine the maintenance scheme under the condition of uncertain detailed size of shaft deformation, and the repair processing time cannot be determined; 4, under the condition of poor repair effect or the existence of deformation and other factors, once the equipment is started at high speed, it may cause serious consequences that cannot be estimated.

[0003] In the prior art, the repair of shafting is mainly carried out by surfacing and light car process, and the shafting is easily twisted and deformed due to uneven heat receiving in surfacing, so that slight wear of the shafting becomes more serious damage, therefore, a uniform, adjustable speed and stable surfacing device plays a crucial role in the repair engineering of shafting. In the conventional shafting repair operation, the following problems mainly exist: 1, the shafting is not easy to fix, because welding is needed, and it is easy to move under the condition of easy fixing, and multiple people are needed to cooperate operation; 2, manual welding, the welding seam spacing and hand speed are not easy to control, the surfacing quality is unstable, the energy input is uneven, and the deformation risk is increased; 3, the wear area is discontinuous, which leads to a larger butt welding area, and increases the risk of shafting twist and deformation; 4, if the butt welding effect is not good, it will be reworked, and repeated surfacing is easy to cause irregular deformation and make the workpiece into a waste product. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming at least one defect of the prior art, and provides a surfacing device, which has the advantages of high construction precision, high automation degree, simple and easy operation, low rework rate, energy saving and environmental protection.

[0005] The utility model discloses a kind of surfacing devices applicable to multi-caliber shaft system, fixed workpiece, workpiece overturning, efficient welding, energy input controllable, welding stroke can be automatically set, support stable and multiple high-difficulty operation requirements are integrated into one's body in high-efficiency device, specific and including a surfacing device, including rotating device and welding device;The welding device is located at one side of the rotating device;The rotating device includes base, clamping turntable, support assembly, top tight component;The clamping turntable is located at one end of the base, and the support assembly and top tight component are located on the base and can move horizontally along the base;The clamping turntable is used to clamp one end of workpiece and realize the rotation of workpiece, the support assembly is used to support the middle part of workpiece, and the top tight component is used to fix the other end of workpiece;The welding device is used to carry out surfacing repair to fixed workpiece.

[0006] The rotating device of the utility model has three functions of clamping workpiece, stable support and uniform rotation;The welding device mainly realizes uniform and stable welding of workpiece;Since the lengths of workpieces are different, and in order to improve stability during rotation of shaft workpiece, the utility model also designs support assembly;And support assembly can also move horizontally relative to base, and the support point thereof is adjusted according to the length of workpiece.

[0007] Further, the bottom of the clamping turntable is provided with a turntable lifting device;The base is provided with a guide rail;The bottom of the support assembly is provided with a first roller set matched with the guide rail, and the top is provided with a support roller for supporting shaft system.

[0008] The utility model designs first roller set and locking device to meet the rotation of various shafts, and bearing parts are designed on the contact surface between support roller and workpiece, so that the friction between workpiece shaft and support assembly is reduced while low-speed rotation is ensured, and the vibration of workpiece is reduced.The first roller set is installed on the guide rail, and the position can be flexibly adjusted as required.The design of guide rail and roller set realizes that shafts of different lengths can be constructed, and the operation is simple.The guide rail is composed of two channel steels arranged in face-to-face parallel and large angle steels arranged in transverse interval to form a frame, and then two angle steels arranged in parallel are laid on the channel steels, and are welded with the surface of the channel steels;Between the two channel steels, the upper surface of the transverse angle steel is integrally laid with a thin steel plate, so that the rigidity and strength of the guide rail are ensured, the flatness of the guide rail is ensured, and the waste of welding is more conveniently collected and cleaned.

[0009] Further, the top-tightening assembly comprises a top-tightening piece, a second roller set, a V-shaped groove, and a clamping plate; the second roller set is arranged at the bottom of the top-tightening piece and is embedded with the V-shaped groove, and the V-shaped groove is fixed with the guide rail; the clamping plate is fixedly arranged at the lower side of the guide rail and is detachably fixed with the top-tightening piece through a screw rod. More preferably, the V-shaped groove is 90°.

[0010] The base of the top-tightening piece is provided with a second roller set, which comprises four roller pieces, and a 90° V-shaped groove is formed on the outer side of each roller piece and precisely matches the vertical surface of the guide rail angle steel; the top-tightening assembly is additionally provided with a clamping plate, and the clamping plate is tightly attached to the lower edge of the guide rail by tightening the long nut at the top and pulling the two screw rods, so that the top-tightening assembly is concentric with the clamping device and is more firmly fixed and stable.

[0011] Further, the inside of the clamping turntable is provided with a first gear box for adjusting the rotating speed; the turntable lifting device comprises a first fixed plate, a screw set, and a second fixed plate, the top of the first fixed plate is connected with the clamping turntable, the middle part is connected with the second fixed plate through the screw set, and the second fixed plate is fixed with the base; the cross section of the first fixed plate and the second fixed plate is L-shaped.

[0012] Further, the welding device comprises a base, a lifting column assembly, a horizontal telescopic arm assembly, an electric control assembly, and a welding machine assembly; the lifting column assembly is vertically arranged on the base, the horizontal telescopic arm assembly is arranged on one side of the top of the lifting column assembly, and the two are perpendicular to each other; the welding machine assembly comprises a welding machine piece, a cable, and a welding gun which are connected in sequence; the welding machine piece is installed on the lifting column assembly; the welding gun is hung below the horizontal telescopic arm assembly; the position of the welding gun is adjusted through the electric control assembly to realize the surfacing welding of the shaft system.

[0013] Further, the electric control assembly comprises a power control box and a control panel; the power control box is used for controlling the movement of the base; the control panel is used for adjusting the lifting of the lifting column assembly and the telescoping of the horizontal telescopic arm assembly to realize the adjustment of the position of the welding gun.

[0014] Further, the lifting column assembly comprises a column and a lifting gear box arranged at the top of the column; the horizontal telescopic arm assembly comprises a horizontal arm and a horizontal movement gear box arranged at one end of the horizontal arm; one end of the horizontal movement gear box is further provided with a control line flexible connection guide rail.

[0015] Further, the inner side of the column is also provided with a cantilever, the cantilever is provided with a lifting ring for hanging a cable, the cantilever end of the horizontal arm is also provided with an electric sliding rail set, the welding gun is fixed with the electric sliding rail set, and the bottom of the electric sliding rail set is also provided with a baffle, and the included angle between the baffle and the horizontal plane is 30-90 degrees.

[0016] Specifically, the sliding distance of the base can be controlled by the power control box, so that the position of the welding gun is matched with the position of the workpiece to be welded, the lifting and horizontal moving distance of the column are controlled by the operation control panel, so that the welding gun can normally weld, the welding angle, the advancing speed and the stroke of the welding gun fixed on the electric sliding rail set are set on the control panel, so that a circumferential weld satisfying the requirements can be perfectly built up.

[0017] The improved full-automatic multi-caliber shaft system build-up welding device can be applied to circumferential build-up welding of various diameters, and the outer diameter can be more than 1 m, far exceeding the working range of similar devices. The support assembly can firmly support the cylindrical workpiece and ensure uniform speed and stable rotation by using the clamping turntable, thereby providing a powerful guarantee for uniform speed welding. By setting the initial parameters of the welding machine and the electric sliding rail, the deformation caused by excessive energy input during welding can be effectively avoided, and the welding seam can be uniform, beautiful and continuous, thereby providing excellent processing conditions for the next light vehicle process.

[0018] Further, the build-up welding device also comprises one or more groups of dust collection devices, the dust collection devices are movably arranged on the other side of the base, and are used for absorbing dust generated during build-up welding. The dust absorption rate of the dust collection device is improved by 60% compared with the movable dust collection device, the pollution of dust and smoke on the site is effectively reduced, and high efficiency and environmental protection are truly realized.

[0019] Compared with the prior art, the build-up welding device has the following beneficial effects:

[0020] The build-up welding device comprises the fixation, build-up welding and dust collection of the shaft system, has high automation degree, and can quickly enter the welding preparation state.

[0021] The surfacing device of the utility model has wide application range, can be suitable for surfacing of cylindrical outer walls of various diameters according to actual conditions, can also be used for the auxiliary turnover device of workpieces which are difficult to be welded, and has high automation degree, is simple and easy to operate.

[0022] The surfacing device of the utility model effectively avoids excessive input of energy and re-deformation of workpieces, has high dust and flue gas absorption rate, and has advantages such as energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure schematic view of the surfacing device of the utility model.

[0024] Figure 2 It is the structure schematic view of the rotating device of the utility model.

[0025] Figure 3 It is the rotating device A-A view of the utility model.

[0026] Figure 4 It is the rotating device B-B view of the utility model.

[0027] Figure 5 It is the structure schematic view of the welding device of the utility model. DETAILED DESCRIPTION

[0028] The accompanying drawings of the embodiments, the technical scheme in the embodiments of the utility model is described in more detail.In the drawings, the same or similar reference signs represent the same or similar elements or elements with the same or similar functions from beginning to end.The described embodiments are part of the embodiments of the utility model, not all the embodiments.The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.The embodiments of the utility model are described in detail below in combination with the drawings.

[0029] It should be noted that if the application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc.between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications also change accordingly.

[0030] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] Example

[0032] This embodiment provides a welding device, such as... Figure 1 As shown, the device includes a rotating device 1, a welding device 2, and a dust collection device 3; the welding device 2 is located on one side of the rotating device 1; the number of dust collection devices 3 matches the number of welding devices 2. The dust collection device 3 is movably located on the other side of the rotating device 1 to absorb the dust generated during welding.

[0033] like Figure 2 As shown, the rotating device 1 includes a base 11, a clamping turntable 12, a support assembly 13, and a clamping assembly 14; the clamping turntable 12 is disposed at one end of the base 11, and the support assembly 13 and the clamping assembly 14 are disposed on the base 11 and can move horizontally along the base 11; the clamping turntable 12 is used to clamp one end of the workpiece and realize the rotation of the workpiece, the support assembly 13 is used to support the middle part of the workpiece, and the clamping assembly 14 is used to fix the other end of the workpiece; the welding device 2 is used to perform weld overlay repair on the fixed workpiece.

[0034] Combination Figure 3 As shown, the bottom of the clamping turntable 12 is provided with a turntable lifting device 15; the base 11 is provided with a guide rail 16; the interior of the clamping turntable 12 is provided with a first gearbox (not shown in the figure) for adjusting the rotation speed; the turntable lifting device 15 includes a first fixing plate 151, a screw assembly 152 and a second fixing plate 153, the top of the first fixing plate 151 is connected to the clamping turntable 12, and the middle part is connected to the second fixing plate 153 through the screw assembly 152, the second fixing plate 153 is fixed to the base 11; the cross-section of the first fixing plate 151 and the second fixing plate 153 is L-shaped. Figure 2 As shown, the bottom of the support assembly 13 is provided with a first roller group 17 that matches the guide rail 16, and the top is provided with a support roller 18 for supporting the shaft system.

[0035] like Figure 2 and Figure 4As shown, the top tight component 14 includes a top tight piece 141, a second roller group 142, a V-shaped groove 143, a clamping plate 144, and a pull rod 145; the second roller group 142 is arranged at the bottom of the top tight piece 141 and is embedded with the V-shaped groove 143, and the V-shaped groove 143 is fixed with the guide rail 16; the clamping plate 144 is fixedly arranged at the lower side of the guide rail 16, and the clamping plate 144 is detachably fixed with the top tight piece 141 through the pull rod 145, and the V-shaped groove 143 is 90°. The base 21 of the top tight piece 141 is provided with the second roller group 142, which includes four roller pieces, and the outer side of each roller piece is provided with a 90° V-shaped groove 143 and is precisely matched with the vertical surface of the angle steel of the guide rail 16; the top tight component 14 of the utility model further includes the design of the clamping plate 144 and the pull rod 145, the two clamping plates 144 pulled by the two screw rods can be tightly attached to the lower edge of the guide rail 16 by tightening the long nut at the top, and the clamping plate and the top tight piece are fixed through the pull rod 145, so that the top tight component 14 is concentric with the rotating device and is more firmly fixed and has higher stability.

[0036] As shown in the figure, Figure 5 As shown, the welding device 2 includes a base 21, a stand 22, a lifting gear box 23 arranged at the top of the stand 22, a horizontal arm 24, a horizontal moving gear box 25 arranged at one end of the horizontal arm 24, a power control box 26, a control panel 27, a welding machine piece 28, a cable 10, and a welding gun 29; the stand 22 is vertically arranged on the base 21, and the horizontal arm 24 is arranged at one side of the top of the stand 22 and is perpendicular to each other; the welding machine piece 28 is installed on the stand 22; the welding gun 29 is hung below the horizontal arm 24; the position of the welding gun 29 is adjusted through the control panel 27 to realize the surfacing welding of the shafting. The power control box 26 is used for controlling the movement of the base 21; the control panel 27 is used for adjusting the lifting of the stand 22 and the extension of the horizontal arm 24 to realize the adjustment of the position of the welding gun 29. The power control box 26 is arranged at one side of the stand 22 and is located on the base 21; the control panel 27 is hung below the cantilever end of the horizontal arm 24 and is located beside the electric sliding rail group 4. One end of the horizontal moving gear box 25 is further provided with a control line soft connection guide rail 100. The control line soft connection guide rail 100 is mainly used for accommodating the control line, and when the welding gun 29 needs to be extended, it can also play the role of auxiliary extension of the cable 10. The welding device of the utility model can be arranged on a group of sliding tracks 200 parallel to the guide rail 16, and one or more groups of welding devices can be designed according to the need to adjust the position.

[0037] As shown in the figure, Figure 5As shown, the inner side of the column 22 is also provided with a cantilever 20, which is provided with a hanging ring 30 for hanging the cable 10; the cantilever end of the horizontal arm 24 is also provided with an electric sliding rail group 4, and the welding gun 29 is fixed to the electric sliding rail group 4; the bottom of the electric sliding rail group 4 is also provided with a baffle 5, and the included angle between the baffle 5 and the horizontal plane is 52°. The bottom of the base 21 is provided with a pulley, which can be controlled to move on the sliding track 200 by the power control box 26. The base 21 is also provided with a tool box 40 for placing commonly used tools.

[0038] Before construction, check the cleanliness of the guide rail 16 of the rotating device 1, and preset the support assembly 13 and the end pressing assembly 14 according to the length of the workpiece. Slowly hoist the workpiece to the clamping turntable 12 and the support assembly 13 by the crane, adjust the height of the support assembly 13 under the assistance of the crane, so that the center of the workpiece is basically coaxial with the center of the clamping turntable 12, adjust the clamping turntable 12 until the workpiece is tightly pressed, and finely adjust the support assembly 13 so that the workpiece can fully fit the contact surface of the support assembly 13. Slowly rotate the clamping turntable 12 to observe the coaxiality of the axis of the workpiece and the clamping turntable 12, and finely adjust if necessary. Then push the end pressing assembly 14 of the workpiece forward, so that it is tightly pressed at the axial position of the workpiece, and then tighten the long nut at the top of the pull rod below the pressing piece 141 by using a wrench, so that the bottom clamping plate 144 is tightly fitted with the track through the two long screw rods, thereby firmly fixing the pressing piece 141. Control the base 21 so that the starting position of the workpiece surfacing of the welding gun 29 is basically in the same vertical plane, and fix the bottom platform. Adjust the lifting gear box 23 and the horizontal moving gear box 25 to make the distance of the welding gun 29 meet the welding requirements, and set the travel speed and stroke of the electric sliding rail group 4. Align the welding position with the dust collecting device 3 and start it to effectively collect dust and smoke.

[0039] During construction, start the welding machine to observe the starting state of the welding work, and finely adjust the angle of the welding gun 29 if necessary, and start the clamping turntable 12 at the same time, and burn a small section according to the pre-set parameters, observe the surfacing effect, and smoothly surfacing to the end of the surfacing stroke under the condition that everything is normal, and the whole process can be observed, and no other operation is needed. When the electric sliding rail group 4 for fixing the welding gun 29 moves to the end of the set stroke, the welding gun 29 is automatically turned off. During the whole construction process, the workpiece only rotates at a constant speed, and the welding gun 29 only moves horizontally, and the generated dust can be quickly absorbed by the dust collecting device 3. After a section of surfacing construction is completed, cool the workpiece for one hour, then turn off the clamping turntable 12, move the welding gun 29 to a new surfacing starting position by controlling the base 21, reset the stroke of the next electric sliding rail group 4 according to the length of the workpiece surfacing if necessary, start the welding machine and the clamping turntable 12, and then perform a new section of surfacing operation.

[0040] After the construction, the lifting gear box 23 and the horizontal arm 24 of the surfacing device are adjusted to make the welding gun 29 away from the workpiece and reset to the idle state, the power of the automatic surfacing device is turned off, the base 21 is controlled to the fixed storage position and locked. The rotating speed of the clamping turntable 12 is reduced to 1 / 2 of the rotating speed in the welding process, the workpiece is cooled for one hour, and then the clamping turntable 12 is turned off. The workpiece is transported to the transfer platform under the cooperation of the travelling crane. The clamping turntable 12, the support assembly 13, the jacking assembly 14 and the dust collecting device 3 are reset, and the equipment, the guide rail 16 and the site are cleaned. The garbage collecting groove can also be laid on the middle rib plate of the two guide rails 16 of the base 21, so that the bottom of the garbage collecting groove is integrally raised and there is no obstacle, so that the garbage is more easily cleaned.

[0041] The utility model have good applicability, can be applicable to cylindrical outer wall surfacing of a plurality of diameters according to actual condition, also can be used for the auxiliary turnover device of the workpiece of difficult welding position, and the automation degree is higher, simple and easy operation.

[0042] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit, although the utility model is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the utility model technical solutions. The technical personnel in the art can also make other changes in the spirit of the utility model and use in the design of the utility model, as long as it does not deviate from the technical effect of the utility model. These changes made according to the spirit of the utility model should be included in the scope of the utility model claimed.

Claims

1. A welding overlay device, characterized in that, It includes a rotating device (1) and a welding device (2); the welding device (2) is located on one side of the rotating device (1); The rotating device (1) includes a base (11), a clamping turntable (12), a support assembly (13), and a clamping assembly (14); the clamping turntable (12) is located at one end of the base (11), and the support assembly (13) and the clamping assembly (14) are located on the base (11) and can move horizontally along the base (11); The clamping turntable (12) is used to clamp one end of the workpiece and realize the rotation of the workpiece; the support assembly (13) is used to support the middle part of the workpiece; the clamping assembly (14) is used to fix the other end of the workpiece; the welding device (2) is used to perform overlay welding repair on the fixed workpiece.

2. The welding apparatus according to claim 1, characterized in that, The bottom of the clamping turntable (12) is provided with a turntable lifting device (15); the base (11) is provided with a guide rail (16); the bottom of the support assembly (13) is provided with a first roller group (17) that matches the guide rail (16), and the top is provided with a support roller (18) for supporting the shaft system.

3. The welding apparatus according to claim 2, characterized in that, The clamping assembly (14) includes a clamping member (141), a second roller assembly (142), a V-groove (143), a retaining plate (144), and a pull rod (145); the second roller assembly (142) is located at the bottom of the clamping member (141) and is fitted with the V-groove (143), and the V-groove (143) is fixed to the guide rail (16); the retaining plate (144) is fixedly located on the lower side of the guide rail (16), and the retaining plate (144) is detachably fixed to the clamping member (141) by the pull rod (145).

4. The welding apparatus according to claim 3, characterized in that, The V-groove (143) is 90°.

5. The welding apparatus according to claim 2, characterized in that, The clamping turntable (12) is equipped with a first gearbox for adjusting the rotation speed; the turntable lifting device (15) includes a first fixing plate (151), a screw assembly (152) and a second fixing plate (153). The top of the first fixing plate (151) is connected to the clamping turntable (12), and the middle part is connected to the second fixing plate (153) through the screw assembly (152). The second fixing plate (153) is fixed to the base (11); the cross-section of the first fixing plate (151) and the second fixing plate (153) is L-shaped.

6. The welding apparatus according to claim 1, characterized in that, The welding device (2) includes a base (21), a lifting column (22) assembly, a horizontal telescopic arm assembly, an electrical control assembly, and a welding machine assembly. The lifting column (22) assembly is vertically mounted on the base (21), and the horizontal telescopic arm assembly is located on one side of the top of the lifting column (22) assembly, with the two being perpendicular to each other. The welding machine assembly includes a welding machine component (28), a cable (10), and a welding torch (29) connected in sequence. The welding machine component (28) is mounted on the lifting column (22) assembly. The welding torch (29) is hung below the horizontal telescopic arm assembly. The position of the welding torch (29) is adjusted by the electrical control assembly to achieve welding of the shaft system.

7. The welding apparatus according to claim 6, characterized in that, The electrical control components include a power control box (26) and a control panel (27); the power control box (26) is used to control the movement of the base (21); the control panel (27) is used to regulate the lifting and lowering of the lifting column (22) assembly and the extension and retraction of the horizontal telescopic arm assembly to adjust the position of the welding torch (29).

8. The welding apparatus according to claim 6, characterized in that, The lifting column (22) assembly includes a column (22) and a lifting gearbox (23) located on the top of the column (22); the horizontal telescopic arm assembly includes a horizontal arm (24) and a horizontal moving gearbox (25) located at one end of the horizontal arm (24); one end of the horizontal moving gearbox (25) is also provided with a control line flexible connection guide rail (100).

9. The welding apparatus according to claim 8, characterized in that, The inner side of the column (22) is also provided with a cantilever (20), and the cantilever (20) is provided with a hanging ring (30) for hanging cables (10); the cantilever end of the horizontal arm (24) is also provided with an electric slide rail assembly (4), and the welding gun (29) is fixed to the electric slide rail assembly (4); the bottom of the electric slide rail assembly (4) is also provided with a baffle (5), and the baffle (5) has an angle of 30 to 90° with the horizontal plane.

10. The welding apparatus according to any one of claims 1 to 9, characterized in that, It also includes one or more dust collection devices (3), which are movably located on the other side of the base (11) for absorbing the dust generated by welding.

Images