Turnover type stand column piece welding device and stand column piece welding method

Abstract

The invention provides a turnover type stand column piece welding device and a stand column piece welding method.The turnover type stand column piece welding device comprises a turnover beam and at least two sets of material positioning frames connected to the turnover beam, the material positioning frames move from a feeding station to a welding station along with the turnover beam, and the material positioning frames guarantee that the position of a stand column piece cannot deviate in the turnover process. A welding assembly is further arranged and comprises four sets of welding guns arranged on the upper side, the lower side and the longitudinal side of the welding station, the welding guns are driven by a first transverse movement driving module to move from one side of the material positioning frame to the other side of the material positioning frame, and the two sets of welding guns located on the upper side and the lower side sequentially weld all connecting positions. And the two groups of welding guns positioned on the two longitudinal sides are used for simultaneously welding the two sides of each connecting position. According to the welding device, welding of all point positions of the stand column piece can be completed within one stroke of the welding gun moving mechanism, the precision is high, the circulation degree is high, and the machining efficiency of the stand column piece can be remarkably improved.

Description

Technical Field

[0001] The invention relates to a welding device, in particular to a flip-type column sheet welding device and a column sheet welding method. Background Art

[0002] Storage shelves are an indispensable and important equipment in modern warehouses. They are used to store various goods, improve the space utilization of warehouses, and facilitate the storage and management of goods. Figure 2 As shown, the column piece 4 is an important component of the shelf, and is composed of a column 41, a cross brace 42 and a diagonal brace 43, wherein the column 41 is the main supporting component of the shelf, and the cross brace 42 and the diagonal brace 43 play the role of connecting and reinforcing the column 41, making the column piece 4 more stable.

[0003] The columns, cross braces and diagonal braces are generally made by welding technology, and welding points are distributed in the extension direction and on both sides of the columns. In conventional technology, each point is usually welded manually, which is time-consuming and laborious. The applicant disclosed a storage column sheet welding machine in the text of the Chinese authorized patent with announcement number CN218426411U. The column sheet is fixed on a flip platform, and the welding guns controlled by two sets of horizontal modules are welded to the welding positions on one side of the column sheet in sequence, and then the column sheet is flipped on the plane by the flip platform, and the two sets of welding guns are fixed-point welded on the other side of the column sheet. The invention can complete the welding of all points on the column sheet, and the degree of automation is high, but the flip platform has insufficient positioning ability for the column sheet. The position of the column sheet may be offset when flipping, causing deviation of the target welding point position, thereby affecting the overall strength of the column sheet. It takes the moving stroke of two horizontal modules to complete the welding of all points of the column sheet at the same time. There is room for further improvement in efficiency and accuracy of the welding equipment for the column sheet. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a flip-type column sheet welding device, comprising: a frame, on which a flip beam extending along a first direction is provided, the flip beam rotates around its own central axis under the drive of a flip driving mechanism, and two sides of the flip beam are respectively a welding station and a loading station;

[0005] At least two sets of material positioning frames connected to the turning beam, each set of material positioning frames respectively positions a set of column pieces; each set of material positioning frames comprises two sets of material supporting beams and two sets of material positioning beams extending along the first direction, each set of material positioning frames comprises two sets of material supporting longitudinal beams arranged at both ends of the two sets of material supporting beams; each set of material positioning beams is connected to at least one set of clamping components for positioning the column pieces on the surface of the material supporting beams;

[0006] And a welding assembly, the welding assembly includes four groups of welding guns arranged on the longitudinal and upper and lower sides of the welding station and a welding gun moving mechanism for driving the welding guns to move, the welding gun moving mechanism includes a welding gun support beam and a first transverse driving module, the frame is respectively provided with a first track extending along a first direction on the upper and lower sides of the welding station, the four groups of welding guns are connected to the first track through the welding gun support beam, and the first transverse driving module drives the welding gun support beam to move from one side of the welding station to the other side along the first track.

[0007] Furthermore, a blocking piece for preventing the column piece from falling is arranged on the longitudinal inner side of the material supporting cross beam.

[0008] Furthermore, each set of material positioning frames includes two sets of material supporting longitudinal beams arranged at both ends of the two sets of material supporting cross beams, vertical slide rails are arranged on the material supporting longitudinal beams, and the ends of the material supporting cross beams are slidably connected to the vertical slide rails.

[0009] Furthermore, the first transverse driving module includes transmission wheels arranged at both ends of the first track and chains connected between the two sets of transmission wheels. The transmission wheels are driven to rotate by the first servo motor, and the chain is fixedly connected to the welding gun support beam.

[0010] Furthermore, the welding gun moving mechanism also includes a first vertical moving module arranged on both lateral sides of the welding gun support beam, each group of first vertical moving modules is provided with a horizontal moving module along a second direction, the second direction is perpendicular to the first direction, and the welding gun is connected to the output end of the horizontal moving module.

[0011] Furthermore, the frame is provided with second tracks extending along the first direction on the upper and lower sides of the welding station, and a sliding plate is connected to the second track via a second transverse driving module, and the welding assembly includes a wire feeding disc arranged on the sliding plate.

[0012] The present invention also provides a column sheet welding method, which uses the above welding device to weld the column sheet, comprising the following steps:

[0013] S1. Loading: The turning drive mechanism is started, and the position of one set of material positioning racks is adjusted to the welding station, and the position of the other set of material positioning racks is adjusted to the loading station. The column piece is placed on the material supporting beam of the material positioning rack, and the position of the column piece is adjusted until one end of the column piece contacts the end of the material supporting longitudinal beam;

[0014] S2, Positioning and flipping: The clamping assembly is activated to fix the position of the column piece. The flip drive mechanism drives the flip beam to rotate, and the column piece at the loading station is flipped to the welding station;

[0015] S3. Welding: The welding gun moving mechanisms on the upper and lower sides of the welding station start to start, driving the welding guns to move from the beginning of the stroke to the end of the stroke along the first direction. During the movement of the welding guns, the four groups of welding guns weld the target points in turn until each welding point on the column piece is welded.

[0016] Furthermore, two groups of welding guns connected to the same welding gun support beam simultaneously weld the longitudinal sides of a welding position.

[0017] Furthermore, the welding gun support beam moves from the beginning of the stroke to the end of the stroke and stays at the end of the stroke during the welding process at one welding station, and returns from the end of the stroke to the beginning of the stroke during the welding process at the next welding station.

[0018] Furthermore, a sensor for monitoring whether the column piece is in place is provided on the material supporting crossbeam, and the sensor is electrically connected to the control center, and the clamping assembly is started according to the in-place information fed back by the sensor.

[0019] The present invention provides a flip-type column sheet welding device, comprising a flip beam and at least two groups of material positioning frames connected to the flip beam. The material positioning frames move from the loading station to the welding station along with the flip beam. The material positioning frames are provided with material support beams to support the column sheets. The material positioning beams are provided with clamping components to clamp the column sheets on the surface of the material support beams to ensure that the column sheets will not be offset during the flipping process. A welding component is also provided, the welding component comprises four groups of welding guns disposed above and below the welding station and on both sides of the longitudinal direction. The welding guns move from one side of the material positioning frame to the other side under the drive of the first transverse driving module. During the movement of the welding guns, the two groups of welding guns located on the upper and lower sides weld each connection position in turn, and the two groups of welding guns located on the two sides of the longitudinal direction weld both sides of each connection position at the same time, thereby ensuring the uniformity and reliability of both sides of the welding position.

[0020] The welding device provided by the present invention can complete the welding of all points of the column piece within one stroke of the welding gun moving mechanism, with high precision and high circulation degree. When one group of material positioning frames is in the welding state, the material positioning frame of the loading station can load and unload at the same time, so that the welding time in the prior art is halved, and the processing efficiency of the column piece can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the appearance of a flip-type column sheet welding device of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the column piece;

[0023] Figure 3 It is the main view of the frame;

[0024] Figure 4 It is a structural schematic diagram of the material positioning frame;

[0025] Figure 5 It is a schematic diagram of the structure of the welding assembly;

[0026] Figure 6 is a structural schematic diagram of a first transverse drive module;

[0027] Figure 7 It is a structural schematic diagram of the second transverse drive module.

[0028] Frame 1, flip drive mechanism 11, flip motor 111, flip beam 112, gantry column 12, electrical cabinet 13, first track 14, second track 15;

[0029] Material positioning frame 2, material supporting beam 21, material supporting longitudinal beam 22, lifting plate 23, vertical slide rail 24, material positioning beam 25, pressing assembly 26, baffle 27;

[0030] Welding assembly 3, welding gun 31, wire feeding reel 32, welding gun moving mechanism 33, welding gun support beam 34, first transverse driving module 35, chain 351, first servo motor 352, transmission wheel 353, first vertical moving module 36, horizontal moving module 37, second vertical moving module 38, second transverse driving module 39, rack 391, gear 392, first servo motor 352;

[0031] Column piece 4, column 41, horizontal brace 42, diagonal brace 43. DETAILED DESCRIPTION

[0032] like Figure 1 The flip-type column sheet welding device shown includes a frame 1, on which a flip beam 112 connected to the frame 1 at both ends is provided, the flip beam 112 extends along a first direction and can rotate around its own central axis under the drive of a flip driving mechanism 11, and the two sides of the flip beam 112 are respectively a welding station and a loading station; a support unit includes at least two groups of material positioning frames 2 arranged in a ring around the flip beam 112, each group of material positioning frames 2 is connected to the flip beam 112, each positioning a group of column sheets 4, loading the column sheets 4 at the loading station, and welding at the welding station, and each group of material positioning frames 2 moves between the welding station and the loading station with the flip beam 112. In the embodiment, two groups of material positioning frames 2 are connected to the flip beam 112, symmetrically arranged on both sides of the flip beam 112, and when one group of material positioning frames 2 is located at the welding station, the other group of material positioning frames 2 is located at the loading station.

[0033] like Figure 3As shown, the frame 1 in this embodiment includes gantry columns 12 arranged on both sides of the flip beam 112 along the first direction, and the outer side of the gantry column 12 is an electrical cabinet 13 for storing various electrical components of the welding device. The flip driving mechanism 11 is a flip motor 111 installed on the gantry column 12, and the two ends of the flip beam 112 are connected to the rotating shaft of the flip motor 111 and connected to the gantry columns 12 on both sides through bearings, and are driven to rotate by the flip motor 111.

[0034] like Figure 4 As shown, each group of material positioning racks 2 includes two groups of material supporting beams 21 extending along the first direction, and material supporting longitudinal beams 22 arranged at both ends of the material supporting beams 21. The material supporting beams 21 and the material supporting longitudinal beams 22 enclose a storage area for the column piece 4. The extension direction of the column 41 is the first direction. The inner surface of the material supporting beam 21 is flush with the outer surface of the column 41 of the column piece 4. The column piece 4 is loaded from the side area of ​​the material positioning rack 2, one group of the columns 41 is placed on the material supporting beam 21, and the column piece 4 is pushed along the first direction until one end of the column piece 4 contacts the inner surface of the material supporting longitudinal beam 22, that is, the basic position of the end of the column piece 4 in the welding process is determined. The movement of the column 41 on the material supporting cross beam 21 can be pushed manually, or a push plate controlled by electrical components can be set on the inner side of the material supporting longitudinal beam 22 to automatically push the column piece 4 to contact the material supporting longitudinal beam 22 and locate the reference welding position of the column piece 4.

[0035] The material supporting longitudinal beam 22 is provided with vertical slide rails 24 on both sides of the flip beam 112, and the ends of the material supporting cross beams 21 are slidably connected to the vertical slide rails 24 through the lifting plate 23. The ends of the material supporting cross beams 21 are connected to the lifting plate 23 and move synchronously with the lifting plate 23. The lifting plate 23 can drive the upper and lower sets of material supporting cross beams 21 to move relative to each other until the two sets of material supporting cross beams 21 are in contact with the surfaces of the two sets of columns 41 respectively, so as to adjust the column pieces 4 of different specifications. The vertical movement of the lifting plate 23 can be adjusted manually, or a corresponding moving module can be set for automatic control.

[0036] Two sets of material positioning beams 25 are further arranged between the two sets of material supporting beams 21 on each set of material positioning frame 2. The extension direction of the two sets of material positioning beams 25 is parallel to the first direction. Both ends of each set of material positioning beams 25 are respectively connected to the lifting plate 23, and are driven by the vertical slide rails 24 to move synchronously with the material supporting beams 21. The material positioning beams 25 are preferably installed on the inner side of the lifting plate 23, and the column piece 4 is loaded from the outer side of the material positioning frame 2. The material positioning beams 25 can locate the inner side position of the column piece 4 to a certain extent, and further enhance the positioning accuracy of each welding point.

[0037] Each set of material positioning racks 2 is provided with at least one set of clamping components 26, including a clamping cylinder whose driving direction extends along the material supporting longitudinal beam 22 and a clamping block connected to the clamping cylinder driving shaft, and the fixed end of the clamping cylinder is connected to the material positioning cross beam 25. The clamping component 26 is used to fix the position of the column piece 4 on the material positioning rack 2, and the setting position of the clamping cylinder is avoided for each diagonal brace 43 and cross brace 42 to be welded. The clamping block applies a certain clamping force to the inner surface of the column 41 under the drive of the clamping cylinder, so that the position of the column 41 is strictly limited between the clamping component 26 and the material supporting cross beam 21 during the flipping process of the material positioning rack 2, and will not fall from the material positioning rack 2. Furthermore, a baffle 27 is provided on the longitudinal inner side of the material supporting cross beam 21, and the column piece 4 is loaded from the outer side of the material positioning rack 2 and abuts against the surface of the baffle 27. The baffle 27 can prevent the column piece 4 from falling during the loading stage.

[0038] Furthermore, a sensor is arranged on the end surface of the material support beam 21 opposite to the column sheet 4. The sensor may be a pressure sensor or a photoelectric sensor, which is used to detect whether the column 41 of the column sheet 4 on the support beam is in place. When the transmitter detects that the column 41 is in place, the control center sends a command to the clamping cylinder to control the clamping cylinder to locate the position of the column 41. Multiple groups of sensors on each material support beam 21 may be arranged corresponding to the length direction of the column 41. When each sensor senses that the column 41 is in place, the clamping cylinder starts to locate.

[0039] like Figure 5 and Figure 6 As shown, it also includes a welding assembly 3 for processing each welding point of the column piece 4 on the welding station and a welding gun moving mechanism 33 for controlling the displacement of the welding gun 31. The welding assembly 3 includes four groups of welding guns 31 arranged on the longitudinal and upper and lower sides of the welding station, wherein the upper and lower groups of welding guns 31 correspond to the connection positions of the horizontal brace 42, the oblique brace 43 and the two groups of columns 41 respectively; the two longitudinal groups of welding guns 31 correspond to the welding points on both sides of the longitudinal direction of the same connection position, and welding is performed simultaneously from both sides of the connection position to ensure the strength of the connection position.

[0040] The frame 1 is provided with first rails 14 extending in the first direction on both upper and lower sides of the welding station, and both ends of the first rails 14 are respectively connected to the gantry columns 12. Each set of first rails 14 is connected to a set of welding gun moving mechanisms 33, and the welding gun moving mechanisms 33 include welding gun support beams 34 slidably connected to the first rails 14 and a first transverse driving module 35. The welding gun support beams 34 move from one end of the material to the other end along the first rails 14 under the action of the first transverse driving module 35. The four sets of welding assemblies 3 are respectively connected to both sides of the two sets of welding gun support beams 34, and each target point is welded in sequence when the welding gun support beams 34 move.

[0041] In this embodiment, the first transverse driving module 35 includes a transmission wheel 353 arranged at both ends of the first track 14 and a chain 351 that is transmission-connected between the two sets of transmission wheels 353. The transmission wheel 353 is driven to rotate by the first servo motor 352. The chain 351 is fixedly connected to the welding gun support beam 34. The welding gun support beam 34 is driven to move along the first track 14 through the rotation stroke of the first servo motor 352.

[0042] Furthermore, the welding gun moving mechanism 33 also includes a first vertical moving module 36 disposed on both lateral sides of the welding gun support beam 34, and each group of the first vertical moving modules 36 is provided with a horizontal moving module 37 along the second direction, and the second direction is perpendicular to the first direction. The welding gun 31 is connected to the output end of the horizontal moving module 37, and the vertical and lateral moving trajectories of each group of welding guns 31 are adjusted respectively by the first vertical moving module 36 and the horizontal moving module 37, and then the welding gun 31 is driven to move along the first direction in cooperation with the first lateral moving drive module 35, so that the welding gun 31 can be moved in any direction at each welding point position. The first vertical moving module 36 and the horizontal moving module 37 are both linear motors.

[0043] Furthermore, in this embodiment, a second vertical moving module 38 is arranged on both lateral sides of the welding gun support beam 34. The second vertical moving module 38 adopts a screw transmission structure and is driven by a manual wheel arranged on the welding gun support beam 34. The first vertical moving module 36 is connected to the second vertical moving module 38. The first vertical moving module 36 is used to fine-tune the position of the welding gun 31 during welding. The second vertical moving module 38 is used to manually adjust the position of the welding gun 31 to improve the adaptability of the position of the welding gun 31 to the environment.

[0044] like Figure 7 As shown, the frame 1 is also provided with a second track 15 extending in the first direction on both sides of the upper and lower sides of the welding station, and a sliding plate is connected to the second track 15 through a second transverse driving module 39. The second transverse driving module 39 includes a second servo motor 392 arranged on the sliding plate and a rack 391 arranged along the second track 15. The driving end of the second servo motor 392 is connected with a gear, and the gear is connected to the rack 391 in a transmission connection. The sliding plate is used to place other functional components of the welding gun 31 assembly, such as the wire feeding disc 32, the welding gun 31 control valve, and the drag chain. The sliding plate moves with the welding gun support beam 34 during the welding process. The various components are integrated on the sliding plate, which can effectively prevent the solder delivery cable and other electrical cables from being entangled, thereby maintaining the stability of the welding process.

[0045] In the present invention, the control valve of the welding gun 31, the welding gun moving mechanism 33, the flipping drive mechanism 11, etc. are all connected to the control center, and the conveying of the solder, the movement of the welding gun 31 and the flipping of the material positioning frame 2 are adjusted according to the preset program. On this basis, the working process of this embodiment is described:

[0046] S1. Loading: The flip drive mechanism 11 is started, and the position of one group of material positioning frames 2 is adjusted to the welding station, and the position of the other group of material positioning frames 2 is adjusted to the loading station. The staff places the column piece 4 on the material supporting beam 21 of the material positioning frame 2, and manually or mechanically pushes the column piece 4 along the material supporting beam 21 until one end of the column piece 4 contacts the end of the material supporting longitudinal beam 22.

[0047] S2, positioning and flipping: The sensor detects that the material is in place on the material support beam 21, and controls the clamping cylinder to start according to the information of the sensor to fix the position of the column piece 4. The flip drive mechanism 11 drives the flip beam 112 to rotate, and the column piece 4 at the loading station is flipped to the welding station.

[0048] S3, welding: The welding gun moving mechanisms 33 on the upper and lower sides of the welding station start to start, driving the welding guns 31 to move from the beginning of the stroke to the end of the stroke along the first direction. During the movement of the welding guns 31, the four groups of welding guns 31 weld the target points in sequence, until each welding point on the column sheet 4 is welded. The two groups of welding guns 31 connected to the same welding gun support beam 34 weld the longitudinal sides of a welding position at the same time.

[0049] Since the position of the column piece 4 has been strictly limited, the welding gun moving mechanism 33 can move and weld according to the instructions of the predetermined program, ensuring the accuracy and consistency of welding. While welding is being performed at the welding station, the technician can unload and load the column piece 4 at the loading station, and complete the welding of all points on the column piece 4 within one stroke of the welding gun moving mechanism 33. Further, the welding gun moving mechanism 33 of this embodiment adopts a one-way cycle mode, and the welding gun support beam 34 moves from the beginning of the stroke to the end of the stroke and stays at the end of the stroke during the welding process of one welding station, and returns from the end of the stroke to the beginning of the stroke during the welding process of the next welding station, and the welding process of two column pieces 4 is regarded as a complete cycle, thereby improving the operating efficiency of the entire device.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A flip-type column sheet welding device, characterized in that: include: A frame (1), on which a turning beam (112) extending in a first direction is provided, the turning beam (112) rotates around its own central axis under the drive of a turning drive mechanism (11), and two sides of the turning beam (112) are respectively a welding station and a loading station; At least two groups of material positioning frames (2) are connected to the turning beam (112), and each group of material positioning frames (2) respectively positions a group of column plates (4); each group of material positioning frames (2) comprises two groups of material supporting beams (21) extending along a first direction and two groups of material positioning beams (25); each group of material positioning frames (2) comprises two groups of material supporting longitudinal beams (22) arranged at both ends of the two groups of material supporting beams (21); each group of material positioning beams (25) is connected to at least one group of pressing components (26) for positioning the column plates (4) on the surface of the material supporting beams (21); And a welding assembly (3), the welding assembly (3) comprising four groups of welding guns (31) arranged on the longitudinal direction and upper and lower sides of the welding station and a welding gun moving mechanism (33) for driving the welding guns (31) to move, the welding gun moving mechanism (33) comprising a welding gun support beam (34) and a first transverse driving module (35), the frame (1) is respectively provided with a first track (14) extending along a first direction on the upper and lower sides of the welding station, the four groups of welding guns (31) are connected to the first track (14) through the welding gun support beam (34), and the first transverse driving module (35) drives the welding gun support beam (34) to move along the first track (14) from one side of the welding station to the other side.

2. A flip-type column sheet welding device as claimed in claim 1, characterized in that: A blocking piece (27) for blocking the column piece (4) from falling is arranged on the longitudinal inner side of the material supporting cross beam (21).

3. The flip-type column sheet welding device according to claim 1, characterized in that: Each set of material positioning frames (2) comprises two sets of material supporting longitudinal beams (22) arranged at both ends of two sets of material supporting cross beams (21), vertical slide rails (24) are arranged on the material supporting cross beams (22), and the ends of the material supporting cross beams (21) are slidably connected to the vertical slide rails (24).

4. The flip-type column sheet welding device according to claim 1, characterized in that: The first transverse driving module (35) comprises transmission wheels (353) arranged at both ends of the first track (14) and a chain (351) connected between the two sets of transmission wheels (353); the transmission wheels (353) are driven to rotate by a first servo motor (352); and the chain (351) is fixedly connected to the welding gun support beam (34).

5. The flip-type column sheet welding device according to claim 1, characterized in that: The welding gun moving mechanism (33) further comprises first vertical moving modules (36) arranged on both lateral sides of the welding gun support beam (34), each group of first vertical moving modules (36) is provided with a horizontal moving module (37) along a second direction, the second direction is perpendicular to the first direction, and the welding gun (31) is connected to the output end of the horizontal moving module (37).

6. The flip-type column sheet welding device according to claim 1, characterized in that: The frame (1) is also provided with a second track (15) extending along the first direction on the upper and lower sides of the welding station, and the second track (15) is connected to a sliding plate via a second transverse driving module (39), and the welding assembly (3) includes a wire feeding disc (32) arranged on the sliding plate.

7. A column sheet welding method, characterized in that: The method comprises welding a column sheet using the welding device of claims 1 to 6, comprising the following steps: S1, loading: the turning drive mechanism (11) is started, the position of one set of material positioning frames (2) is adjusted to the welding position, and the position of the other set of material positioning frames (2) is adjusted to the loading position, the column piece (4) is placed on the material supporting cross beam (21) of the material positioning frame (2), and the position of the column piece (4) is adjusted until one end of the column piece (4) contacts the end of the material supporting longitudinal beam (22); S2, positioning and flipping: the clamping assembly (26) is activated to fix the position of the column sheet (4). The turning driving mechanism (11) drives the turning beam (112) to rotate, and the column sheet (4) at the loading station is turned over to the welding station; S3, welding: The welding gun moving mechanisms (33) on the upper and lower sides of the welding station start to start, driving the welding gun (31) to move from the beginning of the stroke to the end of the stroke along the first direction. During the movement of the welding gun (31), the four groups of welding guns (31) weld the target points in sequence, respectively, until each welding point on the column sheet (4) is welded.

8. The column sheet welding method according to claim 7, characterized in that: Two groups of welding guns (31) connected to the same welding gun support beam (34) simultaneously weld the longitudinal sides of a welding position.

9. The column sheet welding method according to claim 7, characterized in that: The welding gun support beam (34) moves from the stroke start end to the stroke end and stays at the stroke end during the welding process of one welding station, and returns from the stroke end to the stroke start end during the welding process of the next welding station.

10. The column plate welding method according to claim 7, characterized in that: The material supporting crossbeam (21) is provided with a sensor for monitoring whether the column piece (4) is in place, and the sensor is electrically connected to the control center. The pressing component (26) is started according to the in-place information fed back by the sensor.

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