A fully automatic welding device for small workpieces

Abstract

The present invention discloses a fully automatic welding device for small workpieces, comprising a first feeding conveyor belt, a second metal chain plate conveyor belt, a unloading conveyor belt, a first welding manipulator, a second welding manipulator, an automatic feeding mechanism for corner pieces, a column clamping mechanism, a column handling mechanism, a finished product shifting mechanism, and a finished product placement platform. The first feeding conveyor belt is arranged horizontally, and the output end of the first feeding conveyor belt is provided with a second metal chain plate conveyor belt that can cooperate with the first feeding conveyor belt. The second metal chain plate conveyor belt is arranged vertically relative to the first feeding conveyor belt. The automatic welding device of the present invention realizes the fully automatic welding of the cross beams and corner pieces of medium-sized shelves. An ordinary worker can operate it after simple training. The materials can be loaded and unloaded at the same position. The welding speed can reach 400 pieces per hour, which is twice the efficiency of a skilled welder. The device has a high degree of automation, improves welding efficiency, improves welding quality, reduces manual labor intensity, reduces production costs, and is suitable for vigorous promotion.

Description

[Technical field]

[0001] The invention relates to the technical field of mechanical parts production, in particular to the technical field of automatic welding devices. [Background technology]

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. The mechanization and automation of the welding process is an important development of modern welding technology. It not only means higher welding production efficiency and better welding quality, but also greatly improves production labor conditions. In the manual arc welding process, the main welding actions are igniting the arc, feeding the electrode to maintain a certain arc length, moving the arc forward and extinguishing the arc. If these actions are all completed automatically by the machine, it is called automatic welding. The existing automatic welding has a low degree of automation. Loading, unloading and workpiece fixing mostly need to rely on manual work, and the work efficiency is low. In addition, most of the existing automatic welding equipment is specially customized for large equipment such as pipe fittings and racks, and it is impossible to carry out equipment specifically used for welding crossbeams and corner pieces of medium-sized shelves. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a fully automatic welding device for small workpieces, which can specifically cope with the welding of medium-sized shelf beams and corner pieces, has a high degree of automation, improves welding efficiency, improves welding quality, and reduces manual labor intensity.

[0004] To achieve the above-mentioned purpose, the present invention proposes a fully automatic welding device for small workpieces, including a first feeding conveyor belt, a second metal chain plate conveyor belt, a unloading conveyor belt, a first welding manipulator, a second welding manipulator, an automatic corner piece feeding mechanism, a column clamping mechanism, a column handling mechanism, a finished product feeding mechanism, and a finished product placement platform. The first feeding conveyor belt is arranged horizontally, and the output end of the first feeding conveyor belt is provided with a second metal chain plate conveyor belt that can cooperate with it. The second metal chain plate conveyor belt is arranged vertically relative to the first feeding conveyor belt. The second metal chain plate conveyor belt includes a first metal chain plate and a second metal chain plate that are symmetrically arranged on the left and right. A certain gap is provided between the first metal chain plate and the second metal chain plate. The first metal chain plate and the second metal chain plate are both vertically provided with a number of column limit baffles that can cooperate with the workpiece. A discharge conveyor belt that can cooperate with the second metal chain plate conveyor belt is laterally provided on one side of the output end of the second metal chain plate conveyor belt, and the discharge conveyor belt is arranged relatively parallel to the first loading conveyor belt. The first loading conveyor belt and the end of the discharge conveyor belt close to the second metal chain plate conveyor belt are both provided with a column handling mechanism that can cooperate with the second metal chain plate conveyor belt. The first welding manipulator and the second welding manipulator are symmetrically provided on both sides of the second metal chain plate conveyor belt. An automatic corner piece feeding mechanism that can cooperate with the first welding manipulator and the second welding manipulator is provided on both sides of the second metal chain plate conveyor belt. A column clamping mechanism that can cooperate with the automatic corner piece feeding mechanism is provided between the first metal chain plate and the second metal chain plate. A finished product placement platform is provided on one side of the output end of the discharge conveyor belt, and a finished product material selecting mechanism that can cooperate with the finished product placement platform is provided on the discharge conveyor belt.

[0005] Preferably, the automatic feeding mechanism for corner pieces includes a feeding vibration plate, a feeding rail, a feeding frame, a stop cylinder, a stop block, a clamping mechanism, and a corner piece feeding mechanism. The feeding vibration plate is arranged on the side of the second metal chain plate conveyor belt, and the output end of the feeding vibration plate is provided with a feeding rail, and the output end of the feeding rail is arranged on the upper end of the feeding frame, and the side of the output end of the feeding rail is provided with a stop cylinder, and the cylinder arm of the stop cylinder is provided with a stop block, and the stop block can pass through the side wall of one side of the feeding rail and extend to the inside of the feeding rail, and the stop cylinder is fixedly connected to the feeding frame, and a corner piece feeding mechanism is provided on the side of the stop cylinder close to the output end of the feeding rail, and a clamping mechanism is provided next to the corner piece feeding mechanism.

[0006] Preferably, the clamping mechanism comprises an X-axis transverse electric cylinder, a Y-axis transverse electric cylinder and a clamping cylinder. The X-axis transverse electric cylinder is arranged at the upper end of the feeding frame. The X-axis transverse electric cylinder is arranged relatively parallel to the second metal chain plate conveyor belt. The upper end of the cylinder slider of the X-axis transverse electric cylinder is laterally provided with a Y-axis transverse electric cylinder. The Y-axis transverse electric cylinder is arranged transversely and perpendicularly to the X-axis transverse electric cylinder. The upper end of the cylinder slider of the Y-axis transverse electric cylinder is provided with a clamping cylinder that can cooperate with the feeding track outlet.

[0007] Preferably, the corner piece feeding mechanism comprises a feeding mechanism transmission box, a feeding mechanism motor, a feeding mechanism driving pulley, a feeding mechanism passive pulley and a feeding belt. The feeding mechanism transmission box is arranged at the upper end of the feeding frame. The feeding mechanism driving pulley and the feeding mechanism passive pulley are respectively provided on both sides of the end of the feeding mechanism transmission box close to the feeding track. The feeding belt is sleeved on the feeding mechanism driving pulley and the feeding mechanism passive pulley. The feeding belt is arranged at the upper end of the feeding track. The feeding mechanism transmission box is provided with a feeding mechanism motor for driving the feeding mechanism driving pulley to rotate.

[0008] Preferably, the column clamping mechanism includes a column clamping cylinder, a lifting cylinder, and a lifting cylinder bracket. The lifting cylinder bracket is arranged between a metal chain plate and a second metal chain plate. A lifting cylinder is vertically arranged on the lifting cylinder bracket. A column clamping cylinder is arranged on the upper end of the cylinder slider of the lifting cylinder. The column clamping cylinder is arranged vertically upward.

[0009] Preferably, the column transport mechanism comprises a column transport mechanism transverse electric cylinder, a transport mechanism support frame, a column transport mechanism lifting cylinder, and a column transport mechanism clamping cylinder. The transport mechanism support frame is in a 7-shape. The lower end of the transport mechanism support frame is fixedly connected to the sides of the first loading conveyor belt and the unloading conveyor belt. The upper end of the transport mechanism support frame is laterally provided with a column transport mechanism transverse electric cylinder. The cylinder slider of the column transport mechanism transverse electric cylinder is vertically provided with a column transport mechanism lifting cylinder. The cylinder slider of the column transport mechanism lifting cylinder is vertically provided with a column transport mechanism clamping cylinder downwardly provided.

[0010] Preferably, the finished product material shifting mechanism comprises a finished product material shifting mechanism transverse electric cylinder, a finished product material shifting mechanism support frame, and a material shifting rod. The finished product material shifting mechanism support frame is in a 7-shape. The lower end of the finished product material shifting mechanism support frame is fixedly connected to the side of the unloading conveyor belt. The upper end of the finished product material shifting mechanism support frame is laterally provided with a finished product material shifting mechanism transverse electric cylinder. A material shifting rod is vertically provided on the cylinder slider of the finished product material shifting mechanism transverse electric cylinder.

[0011] Preferably, conveyor belt limit baffles are symmetrically provided on both sides of the first loading conveyor belt, the spacing between the two conveyor belt limit baffles is slightly larger than the width of the workpiece to be transported, and a radiation sensor that can cooperate with the unloading conveyor belt is provided on one end of the conveyor belt limit baffle close to the second metal chain plate conveyor belt. When the radiation between the radiation sensors is blocked, the loading conveyor belt stops feeding.

[0012] Beneficial effects of the fully automatic welding device for small workpieces of the present invention: the automatic welding device of the present invention realizes the fully automatic welding of the cross beams and corner pieces of medium-sized shelves, and an ordinary worker can operate it after simple training, with loading and unloading at the same position, and the welding speed can reach 400 pieces per hour, which is twice the efficiency of a skilled welder, with a high degree of automation, improved welding efficiency, improved welding quality, reduced manual labor intensity, and reduced production costs, and is suitable for vigorous promotion.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0014] Figure 1 It is a top view of the structural schematic diagram of a fully automatic welding device for small workpieces of the present invention;

[0015] Figure 2 It is a top view of the schematic diagram of the structure of the automatic feeding mechanism of the corner piece of a fully automatic welding device for small workpieces of the present invention;

[0016] Figure 3 It is a top view of the structural schematic diagram of a column clamping mechanism of a small workpiece fully automatic welding device of the present invention;

[0017] Figure 4 It is a side view of the structural schematic diagram of a column transport mechanism of a small workpiece fully automatic welding device of the present invention;

[0018] Figure 5 It is a side view of the structural schematic diagram of a finished product material shifting mechanism of a small workpiece fully automatic welding device of the present invention;

[0019] Figure 6 It is a side view of a schematic diagram of the structure of a column limit baffle of a small workpiece fully automatic welding device of the present invention.

[0020] In the figure: 1-first feeding conveyor belt, 2-second metal chain plate conveyor belt, 3-unloading conveyor belt, 4-first welding manipulator, 5-second welding manipulator, 6-corner piece automatic feeding mechanism, 7-column clamping mechanism, 8-column handling mechanism, 9-finished product feeding mechanism, 10-finished product placement platform, 11-conveyor belt limit baffle, 12-reflection sensor, 21-first metal chain plate, 22-second metal chain plate, 23-column limit baffle, 61-feeding vibration plate, 62-feeding track, 63-feeding frame, 64-stop cylinder, 65-stop top block, 66-clamping mechanism, 67-corner piece feeding mechanism , 71-column clamping cylinder, 72-lifting cylinder, 73-lifting cylinder bracket, 81-column transport mechanism transverse cylinder, 82-transport mechanism support frame, 83-column transport mechanism lifting cylinder, 84-column transport mechanism clamping cylinder, 91-finished product material shifting mechanism transverse cylinder, 92-finished product material shifting mechanism support frame, 93-material shifting rod, 661-material clamping X-axis transverse cylinder, 662-material clamping Y-axis transverse cylinder, 663-material cylinder, 671-feeding mechanism transmission box, 672-feeding mechanism motor, 673-feeding mechanism driving pulley, 674-feeding mechanism passive pulley, 675-feeding belt. [Specific implementation method]

[0021] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The present invention discloses a fully automatic welding device for small workpieces, comprising a first feeding conveyor belt 1, a second metal chain plate conveyor belt 2, a discharging conveyor belt 3, a first welding manipulator 4, a second welding manipulator 5, an automatic feeding mechanism for corner pieces 6, a column clamping mechanism 7, a column transporting mechanism 8, a finished product feeding mechanism 9, and a finished product placement platform 10. The first feeding conveyor belt 1 is arranged horizontally, and the output end of the first feeding conveyor belt 1 is provided with a second metal chain plate conveyor belt 2 that can cooperate with it. The second metal chain plate conveyor belt 2 is arranged vertically relative to the first feeding conveyor belt 1. The second metal chain plate conveyor belt 2 includes a first metal chain plate 21 and a second metal chain plate 22 that are arranged symmetrically on the left and right. The first metal chain plate 21 and the second metal chain plate 22 are arranged symmetrically on the left and right. There is a certain gap between the plates 22, and the first metal chain plate 21 and the second metal chain plate 22 are vertically provided with a plurality of column limit baffles 23 that can cooperate with the workpiece. A discharge conveyor belt 3 that can cooperate with it is horizontally provided on one side of the output end of the second metal chain plate conveyor belt 2, and the discharge conveyor belt 3 is arranged relatively parallel to the first feeding conveyor belt 1. The ends of the first feeding conveyor belt 1 and the discharge conveyor belt 3 close to the second metal chain plate conveyor belt 2 are provided with a column handling mechanism 8 that can cooperate with the second metal chain plate conveyor belt 2. The first welding manipulator 4 and the second welding manipulator 5 are symmetrically provided on both sides of the second metal chain plate conveyor belt 2. The robot 4 and the second welding robot 5 cooperate with the automatic feeding mechanism 6 for corner pieces, a column clamping mechanism 7 which can cooperate with the automatic feeding mechanism 6 for corner pieces is arranged between the first metal chain plate 21 and the second metal chain plate 22, a finished product placement platform 10 is arranged on one side of the output end of the unloading conveyor belt 3, and a finished product material selection mechanism 9 which can cooperate with the finished product placement platform 10 is arranged on the unloading conveyor belt 3, the automatic feeding mechanism 6 for corner pieces includes a feeding vibration plate 61, a feeding track 62, a feeding frame 63, a stop cylinder 64, a stop top block 65, a clamping mechanism 66, and a corner piece feeding mechanism 67, the feeding vibration plate 61 is arranged on the side of the second metal chain plate conveyor belt 2, and a feeding track 62 is arranged on the output end of the feeding vibration plate 61, The output end of the feeding track 62 is arranged at the upper end of the feeding frame 63, and a stop cylinder 64 is arranged on the side of the output end of the feeding track 62. A stop top block 65 is arranged on the cylinder arm of the stop cylinder 64. The stop top block 65 can penetrate the side wall of one side of the feeding track 62 and extend to the inside of the feeding track 62. The stop cylinder 64 is fixedly connected to the feeding frame 63. A corner piece feeding mechanism 67 is arranged on the side of the stop cylinder 64 close to the output end of the feeding track 62. A clamping mechanism 66 is arranged next to the corner piece feeding mechanism 67. The clamping mechanism 66 includes an X-axis transverse moving electric cylinder 661, a Y-axis transverse moving electric cylinder 662 and a clamping cylinder 663. The X-axis transverse moving electric cylinder 661 is arranged on the upper end of the feeding frame 63.The X-axis transverse moving electric cylinder 661 for clamping materials is arranged relatively parallel to the second metal chain plate conveyor belt 2. The upper end of the electric cylinder slider of the X-axis transverse moving electric cylinder 661 for clamping materials is laterally provided with a Y-axis transverse moving electric cylinder 662 for clamping materials. The Y-axis transverse moving electric cylinder 662 for clamping materials is arranged transversely and vertically with the X-axis transverse moving electric cylinder 661. The upper end of the electric cylinder slider of the Y-axis transverse moving electric cylinder 662 for clamping materials is provided with a clamping cylinder 663 that can cooperate with the outlet of the feeding track 62. The corner piece feeding mechanism 67 includes a feeding mechanism transmission box 671, a feeding mechanism motor 672, a feeding mechanism active pulley 673, a feeding mechanism passive pulley 674, and a feeding belt 675. The feeding mechanism transmission box 671 is arranged at the upper end of the feeding frame 63. A feeding mechanism driving pulley 673 and a feeding mechanism passive pulley 674 are respectively provided on both sides of one end of the feeding mechanism transmission box 671 close to the feeding track 62. A feeding belt 675 is sleeved on the feeding mechanism driving pulley 673 and the feeding mechanism passive pulley 674. The feeding belt 675 is arranged on the upper end of the feeding track 62. The feeding mechanism transmission box 671 is provided with a feeding mechanism motor 672 for driving the feeding mechanism driving pulley 673 to rotate. The column clamping mechanism 7 includes a column clamping cylinder 71, a lifting cylinder 72, and a lifting cylinder bracket 73. The lifting cylinder bracket 73 is arranged between a metal chain plate 21 and a second metal chain plate 22. The lifting cylinder bracket 73 is vertically provided with a lifting cylinder. Cylinder 72, the upper end of the cylinder slider of the lifting cylinder 72 is provided with a column clamping cylinder 71, the column clamping cylinder 71 is arranged vertically upward, the column transport mechanism 8 includes a column transport mechanism transverse electric cylinder 81, a transport mechanism support frame 82, a column transport mechanism lifting cylinder 83, and a column transport mechanism clamping cylinder 84, the transport mechanism support frame 82 is a 7-shaped, the lower end of the transport mechanism support frame 82 is fixedly connected to the side of the first feeding conveyor belt 1 and the unloading conveyor belt 3, the upper end of the transport mechanism support frame 82 is horizontally provided with a column transport mechanism transverse electric cylinder 81, the cylinder slider of the column transport mechanism transverse electric cylinder 81 is vertically provided with a column transport mechanism lifting cylinder 83, the column transport mechanism lifting cylinder A column handling mechanism clamping cylinder 84 is vertically downwardly arranged on the electric cylinder slide of the air cylinder 83. The finished product material-pickling mechanism 9 comprises a finished product material-pickling mechanism transverse electric cylinder 91, a finished product material-pickling mechanism support frame 92, and a material-pickling rod 93. The finished product material-pickling mechanism support frame 92 is in a 7-shape. The lower end of the finished product material-pickling mechanism support frame 92 is fixedly connected to the side of the unloading conveyor belt 3. The upper end of the finished product material-pickling mechanism support frame 92 is horizontally provided with a finished product material-pickling mechanism transverse electric cylinder 91. A material-pickling rod 93 is vertically arranged on the electric cylinder slide of the finished product material-pickling mechanism transverse electric cylinder 91. Conveyor belt limit baffles 11 are symmetrically arranged on both sides of the first feeding conveyor belt 1. The spacing between the two conveyor belt limit baffles 11 is slightly larger than the width of the workpiece to be transported.The conveyor belt limit baffle 11 is provided with a cross-beam sensor 12 which can cooperate with the unloading conveyor belt 3 at one end close to the second metal chain plate conveyor belt 2. When the cross-beam sensor 12 is blocked, the loading conveyor belt 1 stops feeding.

[0023] Working process of the present invention:

[0024] During the working process of the fully automatic welding device for small workpieces of the present invention, a worker stands on one side of the feeding end of the first feeding conveyor belt 1 close to the finished product placement platform 10, and places the medium-sized shelf beam to be processed on the first feeding conveyor belt 1. The first feeding conveyor belt 1 transports the medium-sized shelf beam to the end of the second metal chain plate conveyor belt 2. The column handling mechanism 8 clamps the medium-sized shelf beam between the column limit baffles 23 of the second metal chain plate conveyor belt 2. The second metal chain plate conveyor belt 2 translates the medium-sized shelf beam to the upper end of the column clamping mechanism 7. The lifting cylinder 72 of the column clamping mechanism 7 drives the column clamping cylinder 71 to rise, clamps and fixes the medium-sized shelf beam, and the feeding vibration plate 61 of the corner piece automatic feeding mechanism 6 pushes the corner piece into the feeding track 62. The corner piece is transported along the feeding track 62 to the corner piece feeding mechanism 67. The feeding mechanism motor 672 of the corner piece feeding mechanism 67 drives the feeding The feeding belt 675 rotates, and the feeding belt 675 contacts the corner piece, driving the corner piece to move to the clamping claw of the clamping cylinder 663, and the clamping cylinder 663 clamps the corner piece, and the clamping X-axis transverse movement electric cylinder 661 and the clamping Y-axis transverse movement electric cylinder 662 drive the corner piece to move to the end of the medium-sized shelf beam, and the first welding manipulator 4 and the second welding manipulator 5 perform welding. When the corner piece feeding mechanism 67 feeds, the cylinder arm of the stop cylinder 64 extends, and the stop top block 65 is inserted into the loading track 62 to support the next corner piece. After welding is completed, the second metal chain plate conveyor belt 2 continues to rotate and translates the welded medium-sized shelf beam to the side of the unloading conveyor belt 3, and the column transporting mechanism 8 transports the welded medium-sized shelf beam to the unloading conveyor belt 3. The unloading conveyor belt 3 transports the medium-sized shelf beam to the vicinity of the finished product placement platform 10, and the finished product shifting mechanism 9 shifts the medium-sized shelf beam to the finished product placement platform 10.

[0025] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A fully automatic welding device for small workpieces, characterized in that: The invention comprises a first feeding conveyor belt (1), a second metal chain plate conveyor belt (2), a discharging conveyor belt (3), a first welding manipulator (4), a second welding manipulator (5), an automatic corner piece feeding mechanism (6), a column clamping mechanism (7), a column transporting mechanism (8), a finished product material shifting mechanism (9), and a finished product placement platform (10). The first feeding conveyor belt (1) is arranged horizontally, and a second metal chain plate conveyor belt (2) which can cooperate with the first feeding conveyor belt (1) is provided at the output end of the first feeding conveyor belt (1). The second metal chain plate conveyor belt (2) is arranged vertically relative to the first feeding conveyor belt (1). The second metal chain plate conveyor belt (2) comprises a first metal chain plate (21) and a second metal chain plate (22) which are arranged symmetrically on the left and right. A certain gap is provided between the first metal chain plate (21) and the second metal chain plate (22). A plurality of column limit baffles (23) which can cooperate with the workpiece are vertically provided on the first metal chain plate (21) and the second metal chain plate (22). The output end of the second metal chain plate conveyor belt (2) A discharge conveyor belt (3) is disposed laterally on one side and can cooperate with the discharge conveyor belt (3). The discharge conveyor belt (3) is arranged relatively parallel to the first loading conveyor belt (1). The ends of the first loading conveyor belt (1) and the discharge conveyor belt (3) close to the second metal chain plate conveyor belt (2) are both provided with a column transport mechanism (8) that can cooperate with the second metal chain plate conveyor belt (2). The first welding manipulator (4) and the second welding manipulator (5) are symmetrically disposed on both sides of the second metal chain plate conveyor belt (2). An automatic corner piece feeding mechanism (6) capable of cooperating with a first welding robot (4) and a second welding robot (5) is provided on both sides of a chain plate conveyor belt (2); a column clamping mechanism (7) capable of cooperating with the automatic corner piece feeding mechanism (6) is provided between the first metal chain plate (21) and the second metal chain plate (22); a finished product placement platform (10) is provided on one side of the output end of the unloading conveyor belt (3); and a finished product material selection mechanism (9) capable of cooperating with the finished product placement platform (10) is provided on the unloading conveyor belt (3).

2. A fully automatic welding device for small workpieces as claimed in claim 1, characterized in that: The automatic feeding mechanism (6) for corner pieces comprises a feeding vibration plate (61), a feeding track (62), a feeding frame (63), a stop cylinder (64), a stop top block (65), a clamping mechanism (66), and a corner piece feeding mechanism (67). The feeding vibration plate (61) is arranged on the side of the second metal chain plate conveyor belt (2). The output end of the feeding vibration plate (61) is provided with a feeding track (62). The output end of the feeding track (62) is arranged on the upper end of the feeding frame (63). The feeding track (6 2) A stop cylinder (64) is provided on the side of the output end, a stop top block (65) is provided on the cylinder arm of the stop cylinder (64), the stop top block (65) penetrates the side wall of one side of the feeding track (62) and extends into the inside of the feeding track (62), the stop cylinder (64) is fixedly connected to the feeding frame (63), and an angle piece feeding mechanism (67) is provided next to the stop cylinder (64) on the side close to the output end of the feeding track (62), and a clamping mechanism (66) is provided next to the angle piece feeding mechanism (67).

3. A fully automatic welding device for small workpieces as claimed in claim 2, characterized in that: The clamping mechanism (66) comprises an X-axis transverse electric cylinder (661), a Y-axis transverse electric cylinder (662), and a clamping air cylinder (663). The X-axis transverse electric cylinder (661) is arranged at the upper end of the feeding frame (63). The X-axis transverse electric cylinder (661) is arranged relatively parallel to the second metal chain plate conveyor belt (2). The upper end of the cylinder slider of the X-axis transverse electric cylinder (661) is laterally provided with a Y-axis transverse electric cylinder (662). The Y-axis transverse electric cylinder (662) is laterally and vertically arranged with the X-axis transverse electric cylinder (661). The upper end of the cylinder slider of the Y-axis transverse electric cylinder (662) is provided with a clamping air cylinder (663) that can cooperate with the outlet of the feeding track (62).

4. A fully automatic welding device for small workpieces as claimed in claim 2, characterized in that: The corner piece feeding mechanism (67) comprises a feeding mechanism transmission box (671), a feeding mechanism motor (672), a feeding mechanism driving pulley (673), a feeding mechanism passive pulley (674), and a feeding belt (675). The feeding mechanism transmission box (671) is arranged at the upper end of the feeding frame (63). The feeding mechanism driving pulley (673) and the feeding mechanism passive pulley (674) are respectively arranged on both sides of one end of the feeding mechanism transmission box (671) close to the feeding track (62). The feeding belt (675) is sleeved on the feeding mechanism driving pulley (673) and the feeding mechanism passive pulley (674). The feeding belt (675) is arranged at the upper end of the feeding track (62). The feeding mechanism transmission box (671) is provided with a feeding mechanism motor (672) for driving the feeding mechanism driving pulley (673) to rotate.

5. A fully automatic welding device for small workpieces as claimed in claim 1, characterized in that: The column clamping mechanism (7) comprises a column clamping cylinder (71), a lifting cylinder (72), and a lifting cylinder bracket (73); the lifting cylinder bracket (73) is arranged between a metal chain plate (21) and a second metal chain plate (22); the lifting cylinder (72) is vertically arranged on the lifting cylinder bracket (73); the upper end of the cylinder slider of the lifting cylinder (72) is provided with a column clamping cylinder (71); and the column clamping cylinder (71) is arranged vertically upward.

6. A fully automatic welding device for small workpieces as claimed in claim 1, characterized in that: The column transport mechanism (8) comprises a column transport mechanism transverse electric cylinder (81), a transport mechanism support frame (82), a column transport mechanism lifting cylinder (83), and a column transport mechanism clamping cylinder (84). The transport mechanism support frame (82) is 7-shaped. The lower end of the transport mechanism support frame (82) is fixedly connected to the side of the first loading conveyor belt (1) and the unloading conveyor belt (3). The upper end of the transport mechanism support frame (82) is laterally provided with a column transport mechanism transverse electric cylinder (81). The cylinder slide block of the column transport mechanism transverse electric cylinder (81) is vertically provided with a column transport mechanism lifting cylinder (83). The cylinder slide block of the column transport mechanism lifting cylinder (83) is vertically provided with a column transport mechanism clamping cylinder (84) downward.

7. A fully automatic welding device for small workpieces as claimed in claim 1, characterized in that: The finished product material shifting mechanism (9) comprises a finished product material shifting mechanism transverse electric cylinder (91), a finished product material shifting mechanism support frame (92), and a material shifting rod (93). The finished product material shifting mechanism support frame (92) is in a 7-shape. The lower end of the finished product material shifting mechanism support frame (92) is fixedly connected to the side of the unloading conveyor belt (3). The upper end of the finished product material shifting mechanism support frame (92) is laterally provided with a finished product material shifting mechanism transverse electric cylinder (91). The material shifting rod (93) is vertically provided on the electric cylinder slide block of the finished product material shifting mechanism transverse electric cylinder (91).

8. A fully automatic welding device for small workpieces as claimed in claim 1, characterized in that: Conveyor belt limit baffles (11) are symmetrically arranged on both sides of the first loading conveyor belt (1), and the spacing between the two conveyor belt limit baffles (11) is slightly larger than the width of the workpiece to be transported. The conveyor belt limit baffle (11) is provided at one end close to the second metal chain plate conveyor belt (2) with a radiation sensor (12) that can cooperate with the unloading conveyor belt (3). When the radiation between the radiation sensors (12) is blocked, the loading conveyor belt (1) stops feeding.

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