An automatic welding clamping device

Abstract

The present invention discloses an automatic welding clamping device, comprising: a welding base; a clamping mechanism, including a splint bottom frame, a splint top plate, a splint backing plate and a splint driver; the splint backing plate includes a supporting plate surface, and a plurality of clearance holes are arranged at intervals on the supporting plate surface; a welding through hole is formed on the splint top plate; the splint driver is drivingly connected to the splint top plate to drive the splint top plate to move towards the splint backing plate; a front stock supporting mechanism, which includes a support column driving member and a front support column, the front support column is rotatably connected to the welding base, and the support column driving member is drivingly connected to the front support column. The welding mechanism is equipped with a clamping backing plate provided with clearance holes, and the welding slag generated during the welding process falls out through the clearance holes, effectively reducing the influence of the welding slag on the flatness of the supporting plate surface; it is equipped with a front stock supporting mechanism, and the front support column is driven to rotate by means of the support column driving member. After the welding is completed, the front support column swings downward to leave the sheet material, reducing the friction between the sheet material surface and the front support column and reducing the chance of scratches on the sheet material surface.

Description

Technical Field

[0001] The present invention relates to the field of strip welding, and particularly to an automatic welding clamping device. Background Art

[0002] During butt welding, the welding slag generated during the welding process is likely to adhere to the backing plate, affecting the flatness of the backing plate. Local protrusions may occur at the welding position during subsequent clamping, thus affecting the overall flatness. In addition, the welded part is likely to be scratched when it is sent out after welding. It can be seen that there is still room for improvement in the existing welding devices. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] The present invention provides an automatic welding clamping device, comprising:

[0005] A welding base;

[0006] A clamping mechanism, including a splint base frame, a splint top plate, a splint backing plate and a splint driver; the splint backing plate is arranged on the splint base frame, the splint backing plate includes a support surface, and a plurality of spaced clearance holes are arranged on the support surface; the splint top plate is located above the splint backing plate, a welding through hole is formed on the splint top plate, and the welding through hole communicates with the clearance holes; the splint driver is arranged on the splint base frame, and the splint driver is drivingly connected with the splint top plate to drive the splint top plate to move towards the splint backing plate;

[0007] A front stock support mechanism, which includes a support column driving member and a front support column, the support column driving member is arranged on the welding base, the front support column is rotatably connected with the welding base, and the support column driving member is drivingly connected with the front support column.

[0008] Advantages of the present invention: The automatic welding clamping device in the present invention is equipped with a splint backing plate provided with clearance holes. The welding slag generated during the welding process falls out through the clearance holes, which can effectively reduce the influence of the welding slag on the flatness of the support surface and reduce the influence on the flatness of the weld; it is equipped with a front stock support mechanism, and the front support column is driven to rotate by the support column driving member. After welding is completed, the front support column swings downward to leave the sheet material, reducing the friction between the sheet material surface and the front support column and reducing the chance of scratches on the sheet material surface.

[0009] As some sub-schemes of the above technical solution, the front stock support mechanism further includes a guiding member, the guiding member is arranged on the welding base, the guiding member is located between the splint backing plate and the front support column, and a guiding surface is formed on the side of the guiding member adjacent to the front support column, and the guiding surface extends upward from the side adjacent to the front support column to the side adjacent to the splint backing plate.

[0010] As some sub-schemes of the above technical scheme, the front supporting mechanism also includes a movable wheel component, and the movable wheel component includes a support block, a sliding rod, a movable shaft, a movable wheel spring and a roller. The support block is arranged on the welding base, the sliding rod extends upward to above the splint pad, the sliding rod is fixed to the support block, the movable shaft is slidably connected to the sliding rod, the movable wheel spring is arranged between the support block and the movable shaft, and the roller is rotatably connected to the movable shaft.

[0011] As some sub-schemes of the above technical scheme, a rear supporting mechanism is provided on the side of the clamping mechanism away from the front supporting mechanism, and the rear supporting mechanism includes a lifting drive, a supporting roller support and a supporting roller. The lifting drive is arranged on the welding base, and the lifting drive is drivingly connected to the supporting roller support, and the supporting roller is rotatably connected to the supporting roller support.

[0012] As some sub-schemes of the above technical scheme, the automatic welding clamping device also includes a guide mechanism, which includes a first guide piece, a guide slide, a guide slide column, a second guide piece and a guide driving component. The first guide piece is vertically arranged on the welding base, the guide slide column is laterally fixed to the welding base, the guide slide is slidably connected to the guide slide column, the second guide piece is vertically arranged on the guide slide, the guide driving component is arranged on the welding base, and the guide driving component is drivingly connected to the guide slide to drive the guide slide to slide along the guide slide column.

[0013] As some sub-solutions of the above technical solution, the edge guide mechanism also includes an edge guide sensor, which is arranged on the edge guide slide, and the edge guide sensor is used to identify the edge position of the sheet material.

[0014] As some sub-schemes of the above technical scheme, the guide edge driving component includes a guide edge driving motor, a guide edge screw and a guide edge nut. The guide edge driving motor is arranged on the welding base, and the guide edge driving motor is drivingly connected to the guide edge screw. The guide edge nut is arranged on the guide edge slide, and the guide edge screw is threadedly connected to the guide edge nut.

[0015] As some sub-solutions of the above technical solution, the front supporting mechanism also includes a front feeding sensor, which is arranged on the front supporting column and is electrically connected to the supporting column driving component.

[0016] As some sub-solutions of the above technical solution, the support column driving component includes a support column linear driver, and the fixed end and the driving end of the support column linear driver are respectively hinged to the welding base and the front support column.

[0017] As some sub-schemes of the above technical scheme, a connecting support plate is provided on the welding base, and a long through hole is provided on the connecting support plate.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of the clamping mechanism, and the clamping plate driver is omitted in the figure;

[0022] Figure 3 is a schematic cross-sectional structural diagram of the clamping mechanism at the clearance hole;

[0023] Figure 4 is Figure 1 a partial enlarged view of A in

[0024] Figure 5 is another schematic structural diagram of the present invention.

[0025] In the drawings: 1 - welding base;

[0026] 2 - clamping mechanism; 21 - clamping plate bottom frame; 22 - clamping plate backing plate; 221 - clearance hole; 23 - clamping plate top plate; 231 - welding through hole; 24 - clamping plate driver; 25 - cushioning part; 251 - slag dropping port; 252 - cleaning port; 26 - clamping plate lifting guide sleeve; 27 - clamping plate lifting guide post;

[0027] 3 - front stock supporting mechanism; 31 - support column driving member; 32 - front support column; 33 - guiding member; 331 - guiding surface; 34 - support block; 35 - moving wheel spring; 36 - roller; 37 - forward feeding sensor;

[0028] 4 - rear stock supporting mechanism; 41 - lifting driver; 42 - stock supporting roller support; 43 - supporting roller;

[0029] 5 - edge guiding mechanism; 51 - first edge guiding member; 52 - edge guiding slide; 53 - edge guiding slide post; 54 - second edge guiding member; 55 - edge guiding driving member; 56 - edge guiding sensor;

[0030] 6 - connecting support plate; 61 - long through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] In the description of the present invention, the meaning of "several" is an indefinite quantity, the meaning of "multiple" is more than two, understandings such as "greater than", "less than", "exceeding" do not include the present number, and understandings such as "above", "below", "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features. The "and / or" appearing throughout the text represents three parallel solutions. For example, A and / or B represents the solution satisfied by A, the solution satisfied by B, or the solution satisfied by both A and B.

[0034] In the description of the present invention, if there is a short sentence containing multiple parallel features, the attributive therein limits the closest feature. For example: B, C provided on A, E connected to D means that B is provided on A, E is connected to D, and C is not limited; but for the attributives indicating the relationship between features, such as "spaced apart" and "annular arrangement", etc., this does not belong to this category. If the attributive is preceded by the word "all", it means that all the features in this short sentence are limited. For example, B, C, D all provided on A means that B, C, and D are all provided on A. For a sentence that omits the subject, the omitted subject is the subject of the previous sentence, that is, B is provided on A, including C means that B is provided on A and A includes C.

[0035] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0036] The following will be combined with Figures 1 to 5 to illustrate the embodiments of the present invention.

[0037] This embodiment relates to an automatic welding clamping device, including:

[0038] Welding base 1;

[0039] The clamping mechanism 2 includes a splint chassis 21, a splint top plate 23, a splint backing plate 22, and a splint driver 24; the splint backing plate 22 is arranged on the splint chassis 21, the splint backing plate 22 includes a support surface, and a plurality of spaced clearance holes 221 are arranged on the support surface; the splint top plate 23 is located above the splint backing plate 22, and a welding through hole 231 is formed on the splint top plate 23, and the welding through hole 231 communicates with the clearance holes 221; the splint driver 24 is arranged on the splint chassis 21, and the splint driver 24 is drivingly connected to the splint top plate 23 to drive the splint top plate 23 to move towards the splint backing plate 22;

[0040] The front stock supporting mechanism 3 includes a support column driving member 31 and a front support column 32. The support column driving member 31 is arranged on the welding base 1, the front support column 32 is rotatably connected to the welding base 1, and the support column driving member 31 is drivingly connected to the front support column 32.

[0041] This welding mechanism is equipped with a splint backing plate 22 provided with clearance holes 221. During the welding process, the welding slag appears and falls out through the clearance holes 221, which can effectively reduce the influence of the welding slag on the flatness of the support surface and reduce the influence on the flatness of the weld seam; it is equipped with a front stock supporting mechanism 3. With the support column driving member 31 driving the front support column 32 to rotate, after the welding is completed, the front support column 32 swings downward to leave the sheet material, and the surface of the sheet material does not rub against the front support column 32, reducing the chance of scratches on the surface of the sheet material.

[0042] When this automatic welding clamping device performs welding, two sheets of material extend between the splint top plate 23 and the splint backing plate 22 and are aligned. The splint driver 24 drives the splint top plate 23 to move towards the splint backing plate 22, pressing the two sheets of material on the support surface. The joint of the two sheets of material is located above the clearance holes 221, and a welding torch is used to weld the joint through the welding through hole 231. During welding, the welding slag that appears on the back of the sheet material can fall into the clearance holes 221, thereby reducing the influence of the welding slag on the support surface, ensuring the cleanliness of the support surface, and further ensuring the flatness of the subsequent welded sheet material. In addition, the clearance holes 221 can also reduce the possibility of adhesion between the welded sheet material and the clamping backing plate.

[0043] Designing the front stock supporting mechanism 3 not only can reduce the friction of the sheet material, but also makes this automatic welding clamping device convenient to connect with other upstream equipment. When the sheet material enters above the front support column 32, the support column driver drives the front support column 32 to swing upward, and the sheet material can be conveniently guided to the clamping backing plate.

[0044] Furthermore, the front stock feeding mechanism 3 further includes a front feeding sensor 37. The front feeding sensor 37 is arranged on the front supporting column 32, and the front feeding sensor 37 is electrically connected to the supporting column driving member 31. The front feeding sensor 37 is electrically connected to the supporting column driving member 31. When the front feeding sensor 37 recognizes the incoming sheet material, it drives the front supporting column 32 to swing upward to lift the sheet material through signals, automatically recognizes the sheet material and swings the sheet material upward to guide it to the clamping plate spacer 22. After the guiding is completed, the supporting column driving member 31 drives the front supporting column 32 to swing downward, reducing the contact between the front supporting column 32 and the sheet material and reducing the chance of scratching the sheet material. The front feeding sensor 37 is arranged on the front supporting column 32, and there is no need to additionally configure a support structure to arrange the position of the front feeding sensor 37, which simplifies the design structure. In addition, the cooperation between the front stock feeding mechanism 3 and the front feeding sensor 37 can also play a role in positioning the sheet material for fixed-length cutting. Specifically, the sheet material is conveyed from the upstream of the front stock feeding assembly to the top surface of the front supporting column 32 until the signal of the front feeding sensor 37 is triggered and stops. Then, the cutting device externally arranged upstream cuts on the front side of the front stock feeding assembly to complete the fixed-length cutting.

[0045] Furthermore, the front stock feeding mechanism 3 further includes a guiding member 33. The guiding member 33 is arranged on the welding base 1. The guiding member 33 is located between the clamping plate spacer 22 and the front supporting column 32. A guiding surface 331 is formed on the side of the guiding member 33 adjacent to the front supporting column 32. The guiding surface 331 extends upward from the side adjacent to the front supporting column 32 to the side adjacent to the clamping plate spacer 22. The guiding member 33 is arranged between the front supporting column 32 and the clamping plate spacer 22 to connect the front supporting column 32 and the clamping plate spacer 22 in a transitional manner, helping the sheet material to be more accurately positioned between the clamping plate top plate 23 and the clamping plate spacer 22 and improving the positioning accuracy of the sheet material.

[0046] Furthermore, the front stock feeding mechanism 3 further includes a movable wheel member. The movable wheel member includes a support block 34, a sliding rod, a movable shaft, a movable wheel spring 35 and a roller 36. The support block 34 is arranged on the welding base 1. The sliding rod extends upward above the clamping plate spacer 22. The sliding rod is fixedly connected to the support block 34. The movable shaft is slidably connected to the sliding rod. The movable wheel spring 35 is arranged between the support block 34 and the movable shaft. The roller 36 is rotatably connected to the movable shaft. The roller 36 is supported by the movable shaft to lift the sheet material above the clamping plate spacer 22. When the sheet material enters between the clamping plate top plate 23 and the clamping plate spacer 22, the roller 36 lifts the sheet material to further reduce the scratching of the sheet material. The movable wheel spring 35 arranged between the support block 34 and the movable shaft can press down the roller 36 when the clamping plate top plate 23 presses down, keeping the sheet material flat and reducing the warping of the sheet material.

[0047] Further, a rear stock feeding mechanism 4 is provided on a side of the clamping mechanism 2 away from the front stock feeding mechanism 3. The rear stock feeding mechanism 4 includes a lifting driver 41, a stock feeding roller support 42, and a supporting roller 43. The lifting driver 41 is arranged on the welding base 1. The lifting driver 41 is drivingly connected to the stock feeding roller support 42. The supporting roller 43 is rotatably connected to the stock feeding roller support 42. The lifting driver 41, the stock feeding roller support 42, and the supporting roller 43 are configured to form a liftable supporting roller 43 structure. When the sheet material is pushed to the clamping plate 22 from the side where the rear stock feeding mechanism 4 is located, the lifting driver 41 raises the supporting roller 43 to conveniently guide the sheet material to the clamping plate 22, making it more convenient to load the sheet material into the clamping mechanism 2. In addition, the rear stock feeding mechanism 4 can also be used as a transition support to be docked with external equipment to achieve automated processing on the production line.

[0048] Further, the automatic welding clamping device further includes a side guiding mechanism 5. The side guiding mechanism 5 includes a first side guiding member 51, a side guiding slide 52, a side guiding slide column 53, a second side guiding member 54, and a side guiding driving member 55. The first side guiding member 51 is arranged vertically on the welding base 1. The side guiding slide column 53 is fixedly connected to the welding base 1 horizontally. The side guiding slide 52 is slidably connected to the side guiding slide column 53. The second side guiding member 54 is arranged vertically on the side guiding slide 52. The side guiding driving member 55 is arranged on the welding base 1. The side guiding driving member 55 is drivingly connected to the side guiding slide 52 to drive the side guiding slide 52 to slide along the side guiding slide column 53. The first side guiding member 51 and the second side guiding member 54 that both extend vertically are configured to achieve lateral positioning of the sheet material when the sheet material passes through this position and enters the clamping mechanism 2. The side guiding slide 52 is configured to drive the second side guiding member 54 to move. Under the drive of the side guiding driving member 55, the position of the second side guiding member 54 can be conveniently changed, and further the width between the first side guiding member 51 and the second side guiding member 54 can be changed to adjust according to sheet materials of different widths. In this embodiment, the side guiding mechanism 5 is arranged on a side of the rear stock feeding mechanism 4 away from the clamping mechanism 2 to guide the sheet material before it enters the rear stock feeding mechanism 4. In this embodiment, both the first side guiding member 51 and the second side guiding member 54 are roller members. Using roller members can reduce the resistance when the sheet material enters.

[0049] Further, the edge guiding mechanism 5 further includes an edge guiding sensor 56, which is arranged on the edge guiding slide 52 and is used to identify the edge position of the sheet material. Configuring the edge guiding sensor 56 on the edge guiding slide 52 enables the edge guiding sensor 56 to timely feedback the edge position of the sheet material when the edge guiding slide 52 is driven by the edge guiding driving member 55, making the adjustment more convenient. Furthermore, the edge guiding sensor 56 can also be electrically connected to the edge guiding driving member 55, enabling the edge guiding driving member 55 to automatically adjust the position of the second edge guiding member 54 according to the edge position of the sheet material feedback by the edge guiding sensor 56. In this embodiment, the edge guiding sensor 56 used is a transmissive photoelectric sensor. In other embodiments, other sensors such as infrared sensors can also be used.

[0050] Further, the edge guiding driving member 55 includes an edge guiding driving motor, an edge guiding lead screw and an edge guiding nut. The edge guiding driving motor is arranged on the welding base 1, the edge guiding driving motor is drivingly connected to the edge guiding lead screw, the edge guiding nut is arranged on the edge guiding slide 52, and the edge guiding lead screw is threadedly connected to the edge guiding nut. When the edge guiding driving motor drives the edge guiding lead screw to rotate, the edge guiding slide 52 can be driven to move along the edge guiding slide column 53 through the edge guiding nut. Using the edge guiding driving motor for adjustment has the advantages of fast adjustment action and high adjustment accuracy.

[0051] Further, the support column driving member 31 includes a support column linear driver, and the fixed end and the driving end of the support column linear driver are respectively hinged to the welding base 1 and the front support column 32. Thus, when the support column linear driver moves telescopically, the front support column 32 can be driven to swing and rotate. Using this solution simply realizes the swing of the front support column 32.

[0052] Further, a connecting support plate 6 is arranged on the welding base 1, and a long through hole 61 is arranged on the connecting support plate 6. By configuring the connecting support plate 6, the entire automatic welding clamping device can be conveniently connected to an external device in a modular manner with the help of the connecting support plate 6. In addition, with the help of the long through hole 61, it is also possible to conveniently level the device by means of the long through hole 61.

[0053] In addition, the clamping mechanism 2 further includes a cushioning member 25, which is located below the clamping plate cushion 22 and supports the clamping plate cushion 22. The cushioning member 25 is arranged on the welding base 1. The clearance hole 221 penetrates through the clamping plate cushion 22. A welding slag groove is formed on the cushioning member 25, and a slag dropping port 251 communicating with the clearance hole 221 is arranged on the welding slag groove. Arranging a welding slag groove below the clearance hole 221 increases the storage space for welding slag, has the ability to accommodate a large amount and a large number of welding slags, further reduces the influence of welding slag on the support plate surface, and at the same time is beneficial to reducing the frequency of cleaning welding slag.

[0054] Further, the slag groove communicates with all the clearance holes 221. The slag groove communicating with all the clearance holes 221 is beneficial to simplifying the structure of the slag groove, and it is also more convenient to clean the slag groove subsequently.

[0055] Further, a cleaning opening 252 is formed in the side wall of the slag groove. Forming the cleaning opening 252 in the slag groove makes it more convenient to clean the slag.

[0056] Further, cleaning openings 252 are formed in both side walls of the slag groove, and the two cleaning openings 252 are formed in the two side walls of the slag groove along the length direction of the slag groove, so that both sides of the slag groove communicate with the outside. Arranging the cleaning openings 252 in the above manner to form a slag groove with both sides communicating, when it is necessary to remove the slag, it can be achieved by blowing air into one of the cleaning openings 252 or inserting a cleaning head, and the cleaning is more convenient.

[0057] Further, the cushioning member 25 is a pipe fitting. Directly using a pipe fitting as the cushioning member 25 has the advantage of easy availability of materials, which is beneficial to reducing the overall cost.

[0058] Further, the welding clamping mechanism 2 further includes a clamping plate lifting guide post 27 and a clamping plate lifting guide sleeve 26. The clamping plate lifting guide sleeve 26 is fixedly connected to the clamping plate bottom frame 21, and the clamping plate lifting guide post 27 is fixedly connected to the clamping plate top plate 23. By configuring the clamping plate lifting guide post 27 and the clamping plate lifting guide sleeve 26, when the clamping plate driver 24 drives the clamping plate backing plate 22 and the clamping plate backing plate 22 to move, it is more stable and has higher movement accuracy, and it can better ensure that the clamping plate top plate 23 and the clamping plate backing plate 22 tightly press the two sheet materials flush, ensure that the heights of the sheet materials at the weld are the same, and ensure that there is no gap between the welded sheet materials. The clamping plate driver 24 can be a pneumatic push rod, an electric push rod, a hydraulic push rod, a linear module, a linear module, a lead screw mechanism, etc., and its main effect is to provide an output end for linear motion. In this embodiment, the clamping plate driver 24 adopts a cylinder, and adopting a cylinder has the advantages of clean energy and low cost.

[0059] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. An automatic welding clamping device, characterized in that: include: Welding base (1); The clamping mechanism (2) comprises a clamping plate base frame (21), a clamping plate top plate (23), a clamping plate pad (22) and a clamping plate driver (24); the clamping plate pad (22) is arranged on the clamping plate base frame (21), the clamping plate pad (22) comprises a supporting plate surface, and the supporting plate surface is provided with a plurality of space-avoiding holes (221) arranged at intervals; the clamping plate top plate (23) is located above the clamping plate pad (22), and a welding through hole (231) is formed on the clamping plate top plate (23), and the welding through hole (231) is connected to the space-avoiding hole (221); the clamping plate driver (24) is arranged on the clamping plate base frame (21), and the clamping plate driver (24) is connected to the clamping plate top plate (23) by driving, so as to drive the clamping plate top plate (23) to move toward the clamping plate pad (22); A front supporting mechanism (3), comprising a supporting column driving component (31) and a front supporting column (32), wherein the supporting column driving component (31) is arranged on the welding base (1), the front supporting column (32) is rotatably connected to the welding base (1), the supporting column driving component (31) is drivingly connected to the front supporting column (32), the front supporting mechanism (3) further comprises a guiding member (33), the guiding member (33) is arranged on the welding base (1), the guiding member (33) is located between the clamping plate pad (22) and the front supporting column (32), a guiding front surface (331) is formed on a side of the guiding member (33) adjacent to the front supporting column (32), the guiding front surface (331) extends upward from a side adjacent to the front supporting column (32) to a side adjacent to the clamping plate pad (22), the front supporting mechanism (3) further comprises a movable wheel component, the movable wheel component comprises a support block (34), a slide rod , a movable shaft, a movable wheel spring (35) and a roller (36), the support block (34) is arranged on the welding base (1), the slide bar extends upward to the top of the clamping plate pad (22), the slide bar is fixed on the support block (34), the movable shaft is slidably connected to the slide bar, the movable wheel spring (35) is arranged between the support block (34) and the movable shaft, the roller (36) is rotatably connected to the movable shaft, and a rear supporting mechanism (4) is provided on the side of the clamping mechanism (2) away from the front supporting mechanism (3), the rear supporting mechanism (4) includes a lifting drive (41), a supporting roller support (42) and a supporting roller (43), the lifting drive (41) is arranged on the welding base (1), the lifting drive (41) is drivingly connected to the supporting roller support (42), and the supporting roller (43) is rotatably connected to the supporting roller support (42).

2. The automatic welding clamping device according to claim 1, characterized in that: The described automatic welding clamping device further includes a guiding edge mechanism (5). The guiding edge mechanism (5) includes a first guiding edge member (51), a guiding edge sliding table (52), a guiding edge sliding column (53), a second guiding edge member (54), and a guiding edge driving member (55). The first guiding edge member (51) is vertically arranged on the welding base (1). The guiding edge sliding column (53) is horizontally fixed on the welding base (1). The guiding edge sliding table (52) is slidably connected to the guiding edge sliding column (53). The second guiding edge member (54) is vertically arranged on the guiding edge sliding table (52). The guiding edge driving member (55) is arranged on the welding base (1), and the guiding edge driving member (55) is drivingly connected to the guiding edge sliding table (52) to drive the guiding edge sliding table (52) to slide along the guiding edge sliding column (53).

3. The automatic welding clamping device according to claim 2, characterized in that: The guiding edge mechanism (5) further includes a guiding edge sensor (56). The guiding edge sensor (56) is arranged on the guiding edge sliding table (52), and the guiding edge sensor (56) is used to identify the edge position of the sheet material.

4. The automatic welding clamping device according to claim 2, characterized in that: The guiding edge driving member (55) includes a guiding edge driving motor, a guiding edge lead screw, and a guiding edge nut. The guiding edge driving motor is arranged on the welding base (1). The guiding edge driving motor is drivingly connected to the guiding edge lead screw. The guiding edge nut is arranged on the guiding edge sliding table (52), and the guiding edge lead screw is threadedly connected to the guiding edge nut.

5. The automatic welding clamping device according to claim 1, characterized in that: The front sheet supporting mechanism (3) further includes a forward feeding sensor (37). The forward feeding sensor (37) is arranged on the front supporting column (32), and the forward feeding sensor (37) is electrically connected to the supporting column driving member (31).

6. The automatic welding clamping device according to claim 1, characterized in that: The supporting column driving member (31) includes a supporting column linear driver. The fixed end and the driving end of the supporting column linear driver are respectively hinged to the welding base (1) and the front supporting column (32).

7. The automatic welding clamping device according to claim 1, characterized in that: A connecting support plate (6) is arranged on the welding base (1), and a long through hole (61) is arranged on the connecting support plate (6).

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