Assembly welding device for engine room outfitting piece and welding method of assembly welding device

Abstract

The invention relates to a welding technology, in particular to an assembly welding device and a welding method of a cabin outfitting piece, comprising a rotation driving piece arranged on a movable welding frame and connected with a transmission piece arranged on the movable welding frame; and the rotation driving piece is used for driving the transmission piece to act. In the linear electric arc welding process of an outfitting piece, the quality of a welding seam can be remarkably improved by using a gas injection structure; specifically, a gas injection structure is arranged on one side of a nozzle of the electric arc welding gun and acts on a welding area through the force of injected gas, and the gas injection structure is used for conducting swing type injection on molten metal solution at a weld joint, so that the molten metal can flow in a more uniform mode, and irregular weld joints are prevented from being formed; the process not only can ensure the stable flow of the metal molten pool, but also can effectively eliminate the defects such as air holes and cracks possibly generated at the weld joints.

Description

Technical Field

[0001] The present invention relates to a welding technology, specifically an assembly welding device for engine room outfitting parts and a welding method thereof. Background Art

[0002] Engine room outfitting parts refer to various components and facilities used for assembly, fixation, support, connection, and improvement of functionality, comfort, safety, etc. within means of transportation such as ships, airplanes, and vehicles. These components do not directly participate in the basic structure and power system of the means of transportation, but they are crucial for the operation of the means of transportation, the passenger experience, and the safety of the system. On ships, outfitting parts include facilities on the deck, storage racks in the cabin, pipeline systems, navigation and communication equipment, etc., ensuring the functionality and operational convenience of the ship during navigation.

[0003] An assembly welding device for engine room outfitting parts generally refers to welding tools and equipment used for installing and fixing various outfitting parts within the engine room of equipment such as ships or airplanes. The function of these devices is to fix outfitting parts (such as seats, luggage racks, pipelines, electronic equipment brackets, etc.) to the structural framework of the engine room through the welding process, ensuring their firmness, stability, and safety. These devices require high precision and high reliability.

[0004] During the welding process of engine room outfitting parts, arc welding technology is usually adopted, especially straight-line arc welding; arc welding is a common welding method that uses the high temperature of the arc to heat the metal to a molten state, enabling the welded parts to be firmly joined together; in straight-line arc welding, the welding equipment adjusts the heat input of the welding by controlling the current intensity of the arc; however, due to different current intensities, the temperature change in the welding area during the arc welding process will be very large, resulting in uneven fluctuations in the temperature of the molten metal solution at the weld; the appearance of this temperature difference directly affects the fluidity of the molten metal solution.

[0005] Specifically, when the current is too large, the metal in the welding area will be quickly heated and melted, and the fluidity of the molten metal solution in the molten pool increases. However, due to the too high temperature, uneven metal flow is likely to occur after cooling; on the contrary, if the current is too small, the temperature of the molten metal solution cannot reach a sufficient melting degree, resulting in poor fluidity of the molten pool and uneven filling in the weld area, and finally, the weld may be uneven; this uneven metal flow will cause the surface of the weld after cooling to be uneven, thereby affecting the quality and firmness of the weld. Summary of the Invention

[0006] The purpose of the present invention is to provide an assembly welding device for engine room outfitting parts and a welding method thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions: An assembly and welding device for engine room outfitting parts, comprising a welding table and a movable welding frame longitudinally movably arranged on the welding table. A gas blowing structure is arranged on the movable welding frame, and the gas blowing structure includes: A rotation driving member arranged on the movable welding frame, connected to a transmission member arranged on the movable welding frame, and used to drive the transmission member to act; A transverse movement and swing member arranged on the transmission member, with a blowing member arranged on the transverse movement and swing member. When the transmission member acts, it drives the transverse movement and swing member to perform a transverse movement relative to the movable welding frame, and during the transverse movement, the blowing member reciprocally swings and blows on the transverse movement and swing member.

[0008] An assembly and welding device for engine room outfitting parts as described above: The rotation driving member includes a driving mechanism arranged on the movable welding frame and a reciprocating mechanism connected to the driving mechanism; The driving mechanism includes a first lead screw rotatably arranged on the movable welding frame and a driving source with an output shaft arranged at one end of the first lead screw. The driving source is installed on the movable welding frame.

[0009] An assembly and welding device for engine room outfitting parts as described above: The reciprocating mechanism includes a driving disk connected to the first lead screw, a guiding groove opened on the driving disk, an adjusting component arranged in the guiding groove, and a reciprocating component connected to the adjusting component; The adjusting component includes a sliding block slidably arranged in the guiding groove, a screw rod rotatably arranged in the guiding groove and threadedly connected to the sliding block, a rotating column rotatably arranged on the sliding block, and an adjusting knob arranged at one end of the screw rod. The adjusting knob protrudes from the edge of the driving disk.

[0010] An assembly and welding device for engine room outfitting parts as described above: The reciprocating component includes a guiding seat installed on the movable welding frame, a T-shaped frame slidably arranged on the guiding seat, and a sliding groove opened on the T-shaped frame. The sliding groove is inserted into the rotating column.

[0011] An assembly and welding device for engine room outfitting parts as described above: The reciprocating component further includes a rack arranged on the T-shaped frame, a third gear meshing with the rack, and a guiding wheel abutted against one side of the rack. The guiding wheel is connected to the movable welding frame.

[0012] An assembly and welding device for engine room outfitting parts as described above: The transmission member includes a first gear arranged on the first lead screw on one side of the driving disk, a second gear connected by a chain below the first gear, and a second lead screw arranged at the central part of the second gear. The second lead screw rotates on the movable welding frame; It further includes a driving shaft rotating on the movable welding frame below the second lead screw. One end of the driving shaft is fixedly connected to the third gear, and a strip-shaped groove is arranged on the outer wall of the driving shaft.

[0013] An assembly and welding device for engine room outfitting parts as described above: The transverse movement and swing member includes a mounting frame connected to the second lead screw and the driving shaft, and a swing member arranged on the mounting frame; The mounting frame is composed of two symmetrically arranged transverse movement frames. A threaded hole threadedly connected to the second lead screw is arranged on one of the transverse movement frames. A cavity is formed between the two transverse movement frames. A sleeve is rotatably arranged in the cavity below the threaded hole. The sleeve is slidably sleeved on the driving shaft. A convex strip is fixed on the inner wall of the sleeve in cooperation with the strip-shaped groove. A transmission belt is connected to the sleeve.

[0014] An assembly and welding device for engine room outfitting parts as described above: The swing member includes a rotating shaft rotating in the cavity and connected to the transmission belt, and a swing frame arranged at one end of the rotating shaft.

[0015] An assembly and welding device for engine room outfitting parts as described above: The blowing member includes a gas blowing seat mounted on the swing frame and a gas blowing flexible pipe mounted on the gas blowing seat. The blowing port of the gas blowing flexible pipe faces the tabletop of the welding table.

[0016] A welding method using an assembly and welding device for engine room outfitting parts as described above includes the following steps: Step 1: Place the two outfitting part plates to be welded on the welding table, and adjust the movable welding frame to move to the welding position through the driving motor on the welding table; Step 2: Weld the weld seam with the arc welding gun head arranged on the movable welding frame. Driven by the driving source, the first lead screw makes the arc welding gun head arranged on the movable welding frame move on the movable welding frame for linear welding; Step 3: Driven by the driving source, the gas blowing seat transversely moves on the movable welding frame, and during the transverse movement, the gas blowing seat reciprocally swings on the movable welding frame; Step 4: The blowing port of the gas blowing seat discharges gas during the swinging process to blow the molten metal solution at the weld seam of the arc welding gun head; Step Five: Make the molten metal solution evenly fill the weld, improving the flatness of the weld during linear arc welding.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: During the linear arc welding process of outfitting parts, using the gas blowing structure can significantly improve the quality of the weld. Specifically, a gas blowing structure is arranged on one side of the nozzle of the arc welding torch. It acts on the welding area through the force of jetting gas. The function of the gas blowing structure is to perform a swinging blow on the molten metal solution at the weld, enabling these molten metals to flow in a more uniform manner and avoiding the formation of irregular welds. This process can not only ensure the smooth flow of the metal molten pool but also effectively eliminate defects such as pores and cracks that may occur at the weld, thereby improving the quality of the welded joint. During this process, through the precise jetting of gas, the molten metal can be better distributed along the length direction of the weld. This uniform metal flow helps prevent problems such as local overheating or excessive cooling, thereby ensuring the flatness of the weld. In addition, the gas blowing structure can also control the distribution of heat input during the welding process, making the temperature in the welding area more uniform, reducing the internal stress generated due to uneven cooling in the heat-affected zone, and thus avoiding deformation of the weld. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the assembly welding device for engine room outfitting parts.

[0019] Figure 2 It is a schematic structural diagram of the assembly welding device for engine room outfitting parts from another perspective.

[0020] Figure 3 It is a schematic structural diagram of the mobile welding frame in the assembly welding device for engine room outfitting parts.

[0021] Figure 4 It is a schematic structural diagram of the gas blowing structure in the assembly welding device for engine room outfitting parts.

[0022] Figure 5 It is a schematic structural diagram of the rotation driving part in the assembly welding device for engine room outfitting parts.

[0023] Figure 6 It is a schematic structural diagram of the transmission part in the assembly welding device for engine room outfitting parts.

[0024] Figure 7 It is a schematic structural diagram of the reciprocating mechanism in the assembly welding device for engine room outfitting parts.

[0025] Figure 8 It is a schematic structural diagram of the reciprocating part in the assembly welding device for engine room outfitting parts.

[0026] Figure 9 It is a schematic structural diagram of a gas blow seat in an assembly and welding device for engine room outfitting parts.

[0027] Figure 10 It is a schematic structural diagram of a transverse movement and swing part in an assembly and welding device for engine room outfitting parts.

[0028] In the figure: 1, welding table; 2, movable welding frame; 3, first lead screw; 4, first gear; 5, second gear; 6, chain; 7, second lead screw; 8, driving disc; 9, guide groove; 10, sliding block; 11, screw; 12, rotating column; 13, adjusting knob; 14, T-shaped frame; 15, sliding groove; 16, guide seat; 17, rack; 18, third gear; 19, guide wheel; 20, driving shaft; 21, transverse movement frame; 22, threaded hole; 23, sleeve; 24, transmission belt; 25, rotating shaft; 26, swing frame; 27, gas blow seat. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Please refer to Figures 1 to 4 , in the embodiments of the present invention, an assembly and welding device for engine room outfitting parts includes a welding table 1 and a movable welding frame 2 that can be longitudinally moved and arranged on the welding table 1. A gas blow structure is arranged on the movable welding frame 2, and the gas blow structure includes: A rotation driving member, the rotation driving member is arranged on the movable welding frame 2, the rotation driving member is connected to a transmission member arranged on the movable welding frame 2, and the rotation driving member is used to drive the transmission member to act; A transverse movement and swing part, the transverse movement and swing part is arranged on the transmission member, a blow part is arranged on the transverse movement and swing part, when the transmission member acts, it drives the transverse movement and swing part to perform a transverse movement relative to the movable welding frame 2, and during the transverse movement, the blow part reciprocally swings and blows on the transverse movement and swing part.

[0031] In this embodiment, when performing linear arc welding of outfitting parts, first, two outfitting parts need to be precisely placed on the welding table 1 to ensure that their weld seams are aligned; at this time, the driving motor on the welding table 1 plays a key role. By adjusting the operation of the driving motor, the movement of the moving welding frame 2 on the tabletop can be adjusted smoothly; when the moving welding frame 2 is accurately moved to the welding position, it provides a stable and precise basis for the subsequent arc welding work; next, through the arc welding equipment installed on the moving welding frame 2, the weld seams of the two outfitting parts can be welded efficiently and evenly; during the welding process, the rotating driving part equipped on the moving welding frame 2 starts to operate, pushing the arc welding to move evenly along the welding track to achieve linear welding operation; at this time, the operation of the rotating driving part not only pushes the linear movement of the arc welding, but also drives the transmission part connected to it to work; after being driven, the transmission part drives the transverse swing part to move. Under the action of the transmission part, it starts to move horizontally and swings accordingly; The swing of this transverse swing part can drive the blowing part installed above it to swing, thereby realizing the impact blowing on the welding area; the swing of the blowing part can accurately blow the molten metal solution at the weld seam; the gas ejected by the blowing part has a certain blowing force, and this airflow effectively impacts the surface of the molten metal at the weld seam, causing the molten metal to flow within the weld seam; the blowing force of the gas enables these molten metals to flow evenly within the weld seam, avoiding uneven metal accumulation or local overheating phenomena, thereby ensuring that the molten metal can be evenly filled into the weld area; During this process, the blowing force not only improves the fluidity of the metal, but also plays a crucial role in the flatness of the weld seam; through the gas blowing action, the fluidity and filling properties of the molten metal are effectively improved, the weld surface becomes smoother and flatter, and the welding quality is significantly improved; this technical means is particularly important in the field of high-precision welding. It can effectively reduce defects in the welding process, such as pores, cracks, and irregular weld seams, thereby providing stronger structural strength and higher fatigue resistance for the welded joint.

[0032] Please refer to Figure 4 、 Figure 5 、 Figure 7 and Figure 8 , as a further solution of the present invention, the rotating driving part includes a driving mechanism arranged on the moving welding frame 2 and a reciprocating mechanism connected to the driving mechanism; The driving mechanism includes a first lead screw 3 rotatably arranged on the moving welding frame 2 and a driving source with an output shaft arranged at one end of the first lead screw 3. The driving source is installed on the moving welding frame 2.

[0033] The reciprocating mechanism includes a driving disk 8 connected to the first lead screw 3, a guiding groove 9 formed in the driving disk 8, an adjusting member disposed in the guiding groove 9, and a reciprocating member connected to the adjusting member; The adjusting member includes a sliding block 10 slidably disposed in the guiding groove 9, a screw rod 11 rotatably disposed in the guiding groove 9 and threadedly connected to the sliding block 10, a rotating column 12 rotatably disposed on the sliding block 10, and an adjusting knob 13 disposed at one end of the screw rod 11, and the adjusting knob 13 protrudes from the edge of the driving disk 8.

[0034] The reciprocating member includes a guiding seat 16 mounted on the moving welding frame 2, a T-shaped frame 14 slidably disposed on the guiding seat 16, and a sliding groove 15 formed in the T-shaped frame 14, and the sliding groove 15 is inserted into the rotating column 12.

[0035] The reciprocating member further includes a rack 17 disposed on the T-shaped frame 14, a third gear 18 meshed with the rack 17, and a guiding wheel 19 abutted against one side of the rack 17, and the guiding wheel 19 is connected to the moving welding frame 2.

[0036] In this embodiment, the driving source drives the first lead screw 3 to rotate on the moving welding frame 2 by transmitting power, so as to realize the adjustment of the arc welding gun head; one end of the first lead screw 3 is connected to the driving disk 8; the rotation of the first lead screw 3 drives the driving disk 8 to rotate, and the rotation of the adjusting knob 13 is used to drive the rotation of the screw rod 11; through the rotation of the screw rod 11, the sliding block 10 can accurately slide in the guiding groove 9, so as to adjust the distance between the rotating column 12 and the center of the driving disk 8; This adjustment process can accurately control the rotation circumference of the rotating column 12 when the driving disk 8 rotates in a circle; the rotating column 12 moves along a circle with the rotation of the driving disk 8; the rotating column 12 rotates on the sliding block 10 and is connected to the T-shaped frame 14, and the T-shaped frame 14 is also slidably inserted into the guiding seat 16; the guiding seat 16 is firmly mounted on the moving welding frame 2, playing a role of support and guidance to ensure the stability and accuracy of the whole movement process; as the rotating column 12 rotates along the circumference of the driving disk 8, the guiding and limiting effect in the guiding seat 16 enables the rotating column 12 to accurately drive the T-shaped frame 14 to perform a lifting movement in the vertical direction; thus meeting different working requirements; whether it is when adjusting the distance between the rotating column 12 and the center of the driving disk 8, or controlling the lifting movement distance of the T-shaped frame 14 during the adjustment process, different swing adjustment requirements can be accurately realized; The rack 17 fixed on the T-shaped frame 14 is in close meshing engagement with the third gear 18; one side of the rack 17 is in contact with the guide wheel 19, and the guide wheel 19 serves to restrict the rack 17 and the third gear 18 to always maintain the meshing state; due to the restriction of the guide wheel 19, the meshing of the rack 17 and the third gear 18 can be kept consistent, avoiding deviation or dislocation; during the lifting adjustment process of the T-shaped frame 14, the lifting movement of the rack 17 drives the guide wheel 19 to rotate reciprocally, ensuring the smooth meshing of the rack 17 and the third gear 18.

[0037] Please refer to Figure 6 , as a further solution of the present invention, the transmission member includes a first gear 4 provided on the first lead screw 3 on one side of the drive disk 8, a second gear 5 provided below the first gear 4 and connected by a chain 6, and a second lead screw 7 provided at the central portion of the second gear 5, and the second lead screw 7 rotates on the moving welding frame 2; It further includes a drive shaft 20 that rotates on the moving welding frame 2 below the second lead screw 7, one end of the drive shaft 20 is fixedly connected to the third gear 18, and a strip-shaped groove is provided on the outer wall of the drive shaft 20.

[0038] In this embodiment, when the drive source is started and drives the first lead screw 3 to rotate, the first gear 4 provided at one end of the first lead screw 3 is tightly connected to the second gear 5 provided at one end of the second lead screw 7 through the chain 6, ensuring the coordinated operation of the two; under this structural design, the rotation of the first lead screw 3 is directly transmitted to the second lead screw 7, causing the second lead screw 7 to rotate synchronously; in this way, through this transmission system, the rotation accuracy and synchronism between the two lead screws can be ensured, so as to ensure the stable performance of the entire system; At the same time, a drive shaft 20 is provided below the second lead screw 7, and one end of the drive shaft 20 is fixedly connected to the third gear 18; the third gear 18 and the rack 17 are tightly combined by meshing to form an accurate power transmission channel; as the rack 17 reciprocates up and down, the third gear 18 will rotate reciprocally accordingly, thereby adjusting and driving the operation of the drive shaft 20; the up and down movement of the rack 17 is driven by the transmission system mentioned earlier, and its up and down process is closely related to the rotation of the third gear 18; under the action of this transmission system, the drive shaft 20 can achieve accurate reciprocating rotation on the moving welding frame 2.

[0039] Please refer to Figures 9 to 10 , as a further solution of the present invention, the transverse swing member includes a mounting bracket connected to the second lead screw 7 and the drive shaft 20 and a swing member provided on the mounting bracket; The mounting bracket is composed of two symmetrically arranged transverse moving brackets 21. A threaded hole 22 threadedly connected to the second lead screw 7 is provided on one of the transverse moving brackets 21. A cavity is formed between the two transverse moving brackets 21. A sleeve 23 is rotatably provided in the cavity below the threaded hole 22. The sleeve 23 is slidably sleeved on the drive shaft 20. A convex strip is fixed to the inner wall of the sleeve 23 in cooperation with the strip-shaped groove. A transmission belt 24 is connected to the sleeve 23.

[0040] The swinging member includes a rotating shaft 25 rotatably disposed in the cavity and connected to the transmission belt 24, and a swinging bracket 26 provided at one end of the rotating shaft 25.

[0041] The blowing member includes a gas blowing seat 27 mounted on the swinging bracket 26 and a gas blowing coiled pipe mounted on the gas blowing seat 27. The blowing port of the gas blowing coiled pipe faces the tabletop of the welding table 1.

[0042] In this embodiment, a threaded hole 22 is provided on one side of the transverse moving bracket 21. The threaded hole 22 is tightly threadedly connected to the second lead screw 7. A slot hole is provided on the other side of the transverse moving bracket 21 in cooperation with the threaded hole 22 to ensure that when the second lead screw 7 operates synchronously with the rotation of the first lead screw 3, the second lead screw 7 can be driven to rotate, so that the transverse moving bracket 21 can perform a transverse movement and fine adjustment under the guidance of the second lead screw 7; A cavity is provided between the two transverse moving brackets 21. A sleeve 23 is rotatably provided in the cavity. The sleeve 23 is tightly sleeved on the drive shaft 20. A strip-shaped groove is provided on the outer wall of the drive shaft 20, and a convex strip is designed on the inner wall of the sleeve 23. The two are connected in a sliding manner to keep a stable connection between the sleeve 23 and the drive shaft 20, and effectively limit the movement state of the sleeve 23 on the drive shaft 20; the sleeve 23 can only move along the axial direction and cannot rotate, so as to ensure that the reciprocating rotation of the drive shaft 20 can directly drive the reciprocating movement of the sleeve 23; in this process, the transverse movement of the transverse moving bracket 21 on the second lead screw 7 is not affected by the movement of the sleeve 23, ensuring the coordination and efficient operation between the two.

[0043] The sleeve 23 is connected to the rotating shaft 25 through a transmission belt 24, forming a power transmission channel, enabling the rotating shaft 25 to rotate synchronously with the reciprocating motion of the sleeve 23; this design allows the rotating shaft 25 to accurately and smoothly follow the movement of the sleeve 23, thereby driving the swing frame 26 to perform corresponding swing adjustments; the gas injection seat 27 installed on the swing frame 26 also swings together, ensuring that the gas injection seat 27 can maintain an accurate position during the welding process; the gas injection flexible pipe installed on the gas injection seat 27 can efficiently inject the molten metal solution at the weld during welding; through the injection action, the gas can effectively distribute the molten metal solution evenly, so that the metal solution in the weld can be spread flatly, filling the weld and ensuring the quality and consistency of the welding effect.

[0044] The welding method using the assembly welding device for a cabin outfitting part as described above includes the following steps: Step 1: Place the two outfitting part plates to be welded on the welding table 1, and adjust the moving welding frame 2 to move to the welding position through the driving motor on the welding table 1; Step 2: Weld the weld with the arc welding gun head set on the moving welding frame 2. Under the drive of the driving source, the arc welding gun head set on the moving welding frame 2 moves on the moving welding frame 2 for linear welding; Step 3: Under the drive of the driving source, the gas injection seat 27 moves horizontally on the moving welding frame 2, and during the horizontal movement, the gas injection seat 27 swings reciprocally on the moving welding frame 2; Step 4: The air outlet of the gas injection seat 27 emits gas during the swinging process, blowing the molten metal solution at the weld melted by the arc welding gun head; Step 5: Make the molten metal solution evenly fill the weld, improving the flatness of the weld during linear arc welding.

[0045] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of the present invention, all technical solutions that can implement the present invention in other specific forms are included in the present invention.

Claims

1. An assembly welding device for cabin outfitting parts, comprising a welding table (1) and a movable welding frame (2) longitudinally movable on the welding table (1), characterized in that: The movable welding frame (2) is provided with a gas blowing structure, and the gas blowing structure comprises: A rotating drive member, the rotating drive member being arranged on the movable welding frame (2), the rotating drive member being connected to a transmission member arranged on the movable welding frame (2), the rotating drive member being used to drive the transmission member to move; A transverse swinging member is arranged on the transmission member, and a blowing member is arranged on the transverse swinging member. When the transmission member is in motion, the transverse swinging member is driven to perform transverse movement relative to the movable welding frame (2), and during the transverse movement, the blowing member reciprocates on the transverse swinging member to perform blowing.

2. The assembly welding device for cabin outfitting according to claim 1 is characterized in that: The rotary drive member comprises a drive mechanism arranged on the movable welding frame (2) and a reciprocating mechanism connected to the drive mechanism; The driving mechanism comprises a first screw rod (3) rotating on the movable welding frame (2) and a driving source having an output shaft arranged at one end of the first screw rod (3), and the driving source is mounted on the movable welding frame (2).

3. The assembly welding device for cabin outfitting according to claim 2, characterized in that: The reciprocating mechanism comprises a driving disc (8) connected to the first screw rod (3), a guide groove (9) provided on the driving disc (8), an adjusting component arranged in the guide groove (9), and a reciprocating component connected to the adjusting component; The adjusting component comprises a sliding block (10) sliding in the guide groove (9), a screw rod (11) rotating in the guide groove (9) and threadedly connected to the sliding block (10), a rotating column (12) rotating on the sliding block (10), and an adjusting button (13) arranged at one end of the screw rod (11), wherein the adjusting button (13) protrudes from the edge of the driving disk (8).

4. The assembly welding device for cabin outfitting according to claim 3 is characterized in that: The reciprocating component comprises a guide seat (16) mounted on the movable welding frame (2), a T-shaped frame (14) sliding on the guide seat (16), and a sliding groove (15) provided on the T-shaped frame (14), wherein the sliding groove (15) is plugged into the rotating column (12).

5. The assembly welding device for cabin outfitting according to claim 4, characterized in that: The reciprocating component further comprises a rack (17) arranged on the T-shaped frame (14), a third gear (18) meshing with the rack (17), and a guide wheel (19) abutting against one side of the rack (17); the guide wheel (19) is connected to the movable welding frame (2).

6. The assembly welding device for cabin outfitting according to claim 1 or 5, characterized in that: The transmission member comprises a first gear (4) arranged on the first screw rod (3) on one side of the driving disc (8), a second gear (5) arranged below the first gear (4) and connected via a chain (6), and a second screw rod (7) arranged at the center of the second gear (5), the second screw rod (7) rotating on the movable welding frame (2); It also includes a driving shaft (20) that rotates on the movable welding frame (2) below the second screw rod (7), one end of the driving shaft (20) is fixedly connected to the third gear (18), and the outer wall of the driving shaft (20) is provided with a strip groove.

7. The assembly welding device for cabin outfitting according to claim 6, characterized in that: The transverse swing member comprises a mounting frame connected to the second screw rod (7) and the drive shaft (20), and a swing member arranged on the mounting frame; The mounting frame is composed of two symmetrically arranged transverse frames (21), one of the transverse frames (21) is provided with a threaded hole (22) threadedly connected to the second screw rod (7), a cavity is formed between the two transverse frames (21), a sleeve (23) is rotatably arranged in the cavity below the threaded hole (22), the sleeve (23) is slidably sleeved on the drive shaft (20), the inner wall of the sleeve (23) is fixed with a convex strip in cooperation with the strip groove, and a transmission belt (24) is connected to the sleeve (23).

8. The assembly welding device for cabin outfitting according to claim 7, characterized in that: The swing component comprises a rotating shaft (25) rotating in the cavity and connected to the transmission belt (24), and a swing frame (26) arranged at one end of the rotating shaft (25).

9. The assembly welding device for cabin outfitting according to claim 8, characterized in that: The blowing member comprises a gas blowing seat (27) mounted on the swing frame (26) and a gas blowing coiled pipe mounted on the gas blowing seat (27), wherein the blowing port of the gas blowing coiled pipe faces the table surface of the welding table (1).

10. A welding method using the assembly welding device for cabin outfitting according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: placing two outfitting plates to be welded on a welding table (1), and adjusting a movable welding frame (2) to move to a welding position by driving a motor on the welding table (1); Step 2: The arc welding gun head arranged on the movable welding frame (2) welds the weld seam, and the first screw rod (3) is driven by the driving source so that the arc welding gun head arranged on the movable welding frame (2) moves on the movable welding frame (2) to perform linear welding; Step 3: under the drive of the driving source, the gas blowing seat (27) moves horizontally on the movable welding frame (2), and in the process of moving horizontally, the gas blowing seat (27) swings back and forth on the movable welding frame (2); Step 4: The gas blowing port of the gas blowing seat (27) emits gas during the swinging process, blowing the molten metal solution at the weld of the arc welding gun head; Step 5: Make the molten metal solution fill the weld evenly to improve the flatness of the weld during linear arc welding.

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