An intelligent welding system for automobile floor

Abstract

The present invention discloses an intelligent welding system for an automobile floor, which relates to the technical field of welding. The system includes a processing table, a turntable is installed on the processing table, a welding gun is fixedly installed on the turntable, a welding head is installed on the welding gun, a rotating ring is rotatably installed at the bottom end of the processing table, and an inner frame is fixedly installed on the inner wall of the rotating ring. When welding is required in the present invention, the staff fixes the thin plate on the tooling rack. Only by driving the turntable to rotate by the servo motor can welding be automatically carried out. At the same time, during the welding process, the thin plate can be rotated by the electric push rod. And while the thin plate is rotated, the turntable can adaptively adjust its own position to match the welding point of the rotated thin plate, so that the turntable can still rotate during the subsequent welding process to carry out welding.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to an intelligent welding system for automobile floor panels. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by means of heating, high temperature or high pressure. There are many energy sources for modern welding, including gas flames, electric arcs, lasers, electron beams, friction, and ultrasonic waves. During the processing of automobile floor panels, electric welding is usually required to weld some welding rods onto them to improve stability;

[0003] During the welding process of vehicle floor panels in the factory, the welding point positions of the welding rods on the same batch of floor panels are the same. When welding, it is often necessary for workers to move the floor panel to the fixture, then fix it, then install the welding rod on the floor panel, and then fetch the welding torch for welding operations. Such a welding method has low efficiency and is also relatively troublesome. Although some large factories use vision robots and other methods for fully automatic welding operations, their costs are high and they cannot be fully applicable to all factories. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent welding system for automobile floor panels to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An intelligent welding system for automobile floor panels, including a processing table, a turntable is installed on the processing table, a welding torch is fixedly installed on the turntable, a welding head is installed on the welding torch, a rotating ring is rotatably installed at the bottom end of the processing table, an inner frame is fixedly installed on the inner wall of the rotating ring, a sliding plate is slidably installed on the inner wall of the inner frame, a rotating shaft is rotatably installed on the sliding plate, and the rotating shaft is fixedly installed below the turntable; a telescopic electric push rod is fixedly installed on the surface of the rotating shaft, a movable frame is fixedly installed at the output end of the telescopic electric push rod, a pressing plate is horizontally slidably installed on the inner wall of the movable frame, an arc-shaped displacement rod is fixedly installed at the bottom end of the processing table, and a bottom block is fixedly installed at the bottom end of the rotating shaft; when the turntable rotates, it will automatically approach the thin plate that needs to be welded currently, and after the thin plate changes direction, it can adaptively tilt and move during the movement to align with the welding point.

[0006] Preferably, a servo motor is fixedly installed on the sliding plate, and gears are fixedly installed on the output end of the servo motor and the surface of the rotating shaft.

[0007] Preferably, a displacement ring is fixedly installed on the surface of the movable frame, and the number of displacement rings is two;

[0008] A vertical plate is fixedly installed at the bottom end of the processing table. A slider is vertically slidably installed in the vertical plate. A plug rod is fixedly installed in the slider. A convex plate is fixedly installed on the rotating ring, and an inclined groove adapted to the size of the plug rod is formed on the convex plate.

[0009] A rotating wheel and a limiting wheel are rotatably installed at the bottom end of the processing table. A limiting mechanism is arranged on the processing table. The limiting mechanism includes a connecting shaft. A belt is arranged at the bottom end of the processing table. A long strip is fixedly installed on the belt.

[0010] Preferably, the cross section of the arc-shaped displacement rod is L-shaped.

[0011] Preferably, a sliding strip is fixedly installed on the pressing plate. An inclined edge is arranged at one end of the sliding strip close to the bottom block. A spring is fixedly installed between the pressing plate and the movable frame.

[0012] Preferably, one end of the pressing plate is arc-shaped.

[0013] Preferably, the limiting mechanism further includes a tooling rack. A receiving frame is fixedly installed on the tooling rack. A clamping table is fixedly installed on the receiving frame. A screw rod is threadedly inserted into the clamping table. A pressing plate is rotatably installed at the bottom end of the screw rod.

[0014] Preferably, a connecting rod is fixedly installed at the bottom end of the processing table. The connecting rod is L-shaped, and the other end of the connecting rod is fixedly connected to the arc-shaped displacement rod.

[0015] Preferably, a connecting strip is fixedly installed between the rotating shaft and the bottom block, and the size of the connecting strip is smaller than that of the bottom block.

[0016] Preferably, a belt pulley is installed on the connecting shaft.

[0017] In the above technical solution, the present invention provides an intelligent welding system for an automobile floor, having the following beneficial effects: When welding is required, the staff fixes the thin plate on the tooling rack. Only by driving the turntable to rotate by the servo motor can welding be automatically carried out. At the same time, during the welding process, the thin plate can be rotated in angle by the electric push rod. And while the thin plate is rotated in angle, the turntable can adaptively adjust its own position to adapt to the welding point of the rotated thin plate, so that the turntable can still keep rotating during the subsequent welding process for welding. When the welding torch welds one of the thin plates, the staff can perform the disassembly and replacement operation on the other welded thin plate, thereby improving the welding efficiency. Description of the Drawings

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of a three-dimensional structure provided by an embodiment of the present invention;

[0020] Figure 2 The embodiment of the present invention provides Figure 1 Schematic diagram of the bottom structure;

[0021] Figure 3 A schematic diagram of a portion of the structure of a tooling frame provided in an embodiment of the present invention;

[0022] Figures 4 - 5 All of them are partial structural schematic diagrams of the swivel provided in the embodiments of the present invention;

[0023] Figure 6 A schematic diagram of a portion of the structure of an arc-shaped displacement rod provided in an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the thin plate processing state structure provided by an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the processing state of uneven ends of welding rods on a thin plate provided by an embodiment of the present invention;

[0026] Figure 9 A partial structural diagram of an activity frame provided in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Processing table; 2. Turntable; 3. Welding gun; 4. Welding head; 5. Thin plate; 61. Fixture frame; 62. Receiving frame; 63. Card table; 64. Screw; 65. Press plate; 71. Swivel; 72. Inner frame; 73. Slide plate; 74. Servo motor; 75. Rotating shaft; 76. Movable frame; 77. Extrusion plate; 78. Bottom block; 79. Arc displacement rod; 710. Displacement ring; 711. Electric push rod; 81. Vertical plate; 82. Sliding block; 83. Inserting rod; 84. Convex plate; 85. Rotating wheel; 86. Strip; 87. Belt; 88. Connecting shaft; 89. Limiting wheel. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See also Figures 1 - 9, An intelligent welding system for automobile floorboards, including a processing table 1, a turntable 2 is installed on the processing table 1, a welding gun 3 is fixedly installed on the turntable 2, a welding head 4 is installed on the welding gun 3, a rotating ring 71 is rotatably installed at the bottom end of the processing table 1, an inner frame 72 is fixedly installed on the inner wall of the rotating ring 71, a sliding plate 73 is slidably installed on the inner wall of the inner frame 72, a rotating shaft 75 is rotatably installed on the sliding plate 73, and the rotating shaft 75 is fixedly installed below the turntable 2;

[0031] A push rod 711 is fixedly installed on the surface of the rotating shaft 75, a movable frame 76 is fixedly installed at the output end of the push rod 711, a pressing plate 77 is horizontally slidably installed on the inner wall of the movable frame 76, an arc-shaped displacement rod 79 is fixedly installed at the bottom end of the processing table 1, and a bottom block 78 is fixedly installed at the bottom end of the rotating shaft 75;

[0032] When the turntable 2 rotates, it will automatically approach the thin plate 5 that needs to be welded currently, and after the thin plate 5 changes its direction, it can adaptively tilt and move during the moving process to align with the welding point.

[0033] In another embodiment of the present invention: a servo motor 74 is fixedly installed on the sliding plate 73, and gears are fixedly installed on the output end of the servo motor 74 and the surface of the rotating shaft 75;

[0034] After starting the servo motor 74, it will drive the rotating shaft 75 to rotate through the gears. When the rotating shaft 75 rotates, it will drive the push rod 711 and the movable frame 76 to rotate synchronously. At this time, the movable frame 76 will drive the pressing plate 77 to start rotating. The pressing plate 77 and the welding head 4 are arranged oppositely, that is, the pressing plate 77 is arranged at one end away from the welding head 4. So when the welding head 4 approaches a certain thin plate 5, at this time the pressing plate 77 is located behind the welding head 4, and then the pressing plate 77 will contact the arc-shaped displacement rod 79, thereby pushing the sliding plate 73 to slide in the inner frame 72 so that the welding head 4 aligns with the welding point, and then the welding gun 3 is started to perform spot welding;

[0035] The servo motor 74 is controlled by the central control system program and stops after rotating a specified angle. At the same time, the central control system controls the welding gun 3 to perform welding operations.

[0036] In another embodiment of the present invention: a displacement ring 710 is fixedly installed on the surface of the movable frame 76, and the number of the displacement rings 710 is two;

[0037] A vertical plate 81 is fixedly installed at the bottom end of the processing table 1, a slider 82 is vertically slidably installed in the vertical plate 81, a plug rod 83 is fixedly installed in the slider 82, a convex plate 84 is fixedly installed on the rotating ring 71, and an inclined groove adapted to the size of the plug rod 83 is opened on the convex plate 84;

[0038] The bottom end of the processing table 1 is rotatably installed with a runner 85 and a limit wheel 89, and a limit mechanism is arranged on the processing table 1. The limit mechanism includes a connecting shaft 88, and a belt 87 is arranged at the bottom end of the processing table 1. A strip 86 is fixedly installed on the belt 87;

[0039] Among them, the belt 87 is connected through the limit wheel 89, the runner 85 and the connecting shaft 88, so that the limit mechanisms at both ends are synchronously connected together. At the same time, the runner 85 is arranged in the middle of the belt 87. When the servo motor 74 drives the welding torch 3 to rotate one week, at this time, the electric push rod 711 is controlled by the central control system to move upward. As the electric push rod 711 moves, it will drive the movable frame 76 to move upward. When the movable frame 76 moves upward, it will drive the displacement ring 710 to move. At this time, the two displacement rings 710 are arranged in parallel, and the insertion rod 83 is located between the two displacement rings 710. When the movable frame 76 drives the displacement ring 710 to rise, it will drive the insertion rod 83 to rise synchronously. When the insertion rod 83 rises, it will vertically move through the slider 82 in the vertical plate 81. Since one end of the insertion rod 83 close to the convex plate 84 is inserted into the inclined groove of the convex plate 84, at this time, as the insertion rod 83 moves upward, it will drive the convex plate 84 to rotate, and the convex plate 84 is fixedly connected with the rotating ring 71, so at this time, the rotating ring 71 will be driven to rotate;

[0040] Among them, the runner 85 is arranged between the rotating ring 71 and the strip 86 and is in contact with both. When the rotating ring 71 rotates, it will drive the runner 85 to rotate. When the runner 85 rotates, it will drive the strip 86 to move. At this time, the strip 86 will drive the belt 87 to slide. The two ends of the belt 87 are respectively connected to the connecting shaft 88. At this time, the two connecting shafts 88 will rotate synchronously, so as to drive the tooling rack 61 to rotate, so as to rotate the thin plate 5;

[0041] Among them, the small-angle rotation of the rotating ring 71 will drive the connecting shaft 88 to rotate through the runner 85, the strip 86 and the belt 87, so that the connecting shaft 88 rotates half a turn or a specified angle, and at this time, the other end of the welding rod to be welded on the thin plate 5 will be rotated over for welding;

[0042] Among them, a damping is arranged between the rotating ring 71 and the processing table 1, so that the rotating ring 71 will not rotate randomly in the natural state.

[0043] In another embodiment of the present invention: the cross section of the arc-shaped displacement rod 79 is L-shaped;

[0044] Among them, when the electric push rod 711 drives the movable frame 76 to move up and down, the pressing plate 77 in the movable frame 76 will also move up and down synchronously. Refer to Figure 6 , when the pressing plate 77 moves up and down, it will contact the inner walls with different thicknesses of the arc-shaped displacement plate;

[0045] Among them, when welding the existing part of the vehicle frame thin plate 5, usually two welding rods need to be welded on it to improve stability or safety. However, the vehicle frame is mostly irregular. Taking this application as an example, two welding rods need to be welded on the vehicle frame thin plate 5, but the lengths of the two welding rods are different. At this time, one end of the two welding rods is set flush, while the other end is not flush. When welding the flush end, when the turntable 2 is located between the two tooling racks 61, only rotation is required to ensure that each welding point is on the route. But when the thin plate 5 rotates half a circle to turn the other end of the welding rod, refer to Figure 8 , at this time, the two welding rods are often not on the same vertical line. After turning them to the same vertical line, the midpoint position of the connection line between the welding points also moves down at this time. At this time, the direct rotation of the turntable 2 will deviate from the welding point. At this time, if welding is required, start the electric push rod 711 to make the electric push rod 711 move upward. When the electric push rod 711 moves upward, the extrusion plate 77 will be pulled by the spring on it and move into the movable frame 76, so that the extended length becomes shorter. At this time, when the rotating shaft 75 drives the turntable 2 to rotate, the extrusion plate 77 will contact the thicker inner wall of the arc-shaped displacement rod 79. At this time, the arc-shaped displacement plate will make the extrusion plate 77 drive the rotating shaft 75 and the sliding plate 73 to slide a longer distance in the inner frame 72. At the same time, as the electric push rod 711 moves upward, the electric push rod 711 will also drive the rotating ring 71 to rotate, and the rotation of the rotating ring 71 will change the angle of the inner frame 72. At this time, the inner frame 72 will tilt. Refer to Figure 8 , in the normal state, the inner frame 72 is kept horizontal. At this time, the center of the turntable 2 is located at the upper end of the a track. When the other end of the welding rod on the thin plate 5 rotates over, at this time the welding point deviates, and at the same time the center position of the turntable 2 should move downward to the right along the a track. Therefore, the inner frame 72 will rotate clockwise by a small angle from the horizontal, so that when the turntable 2 moves through the arc-shaped displacement rod 79, it will move downward to the right along the a track. At the same time, the extrusion plate 77 will move a little more forward downward to the right through the thick end of the arc-shaped displacement rod 79, so as to move to the lower right of the a track. At this time, the rotation of the turntable 2 will be a solid circle trajectory, so as to facilitate welding the non-flush ends of the two welding rods on the thin plate 5.

[0046] In another embodiment of the present invention: a slide bar is fixedly installed on the extrusion plate 77, and a bevel edge is provided at one end of the slide bar close to the bottom block 78, and a spring is fixedly installed between the extrusion plate 77 and the movable frame 76;

[0047] Among them, the extrusion plate 77 is horizontally slidably installed in the movable frame 76 through the slide bar on it. At the same time, when the movable frame 76 moves up and down to approach or move away from the bottom block 78, the spring will pull the extrusion plate 77 to move. Refer to Figure 6, when the movable frame 76 moves downward, it will drive the slider downward. At this time, the hypotenuse on the slider will contact the bottom block 78, so that the slider drives the pressing plate 77 to move outward. At this time, the spring will be stretched. When the movable frame 76 moves upward, the hypotenuse of the slider will move away from the bottom block 78. At this time, the spring will pull the pressing plate 77 to move inward, thereby reducing the extended length.

[0048] In another embodiment of the present invention: one end of the pressing plate 77 is arc-shaped;

[0049] Through the arc-shaped setting on the pressing plate 77, when the pressing plate 77 approaches the arc-shaped displacement rod 79, it can slide into the arc-shaped displacement rod 79, thereby pushing the sliding plate 73 to move inside the inner frame 72 in a certain direction.

[0050] In another embodiment of the present invention: the limiting mechanism further includes a tooling rack 61. A receiving frame 62 is fixedly installed on the tooling rack 61. A clamping table 63 is fixedly installed on the receiving frame 62. A screw rod 64 is threadedly inserted into the clamping table 63. A pressing plate 65 is rotatably installed at the bottom end of the screw rod 64;

[0051] The thin plate 5 can be placed on the receiving table. Then, the screw rod 64 is rotated, and the screw rod 64 will squeeze and limit the thin plate 5 through the pressing plate 65. An insertion strip is fixedly installed at the bottom end of the receiving frame 62, and the insertion strip can be inserted into the tooling rack 61. At the same time, screws can be used for fixing and locking, so as to facilitate the replacement of the receiving frame 62.

[0052] In another embodiment of the present invention: a connecting rod is fixedly installed at the bottom end of the processing table 1. The connecting rod is L-shaped, and the other end of the connecting rod is fixedly connected to the arc-shaped displacement rod 79;

[0053] Through the connecting rod, the arc-shaped displacement rod 79 can be installed below the rotating ring 71 and closer to the pressing plate 77.

[0054] In another embodiment of the present invention: a connecting strip is fixedly installed between the rotating shaft 75 and the bottom block 78, and the size of the connecting strip is smaller than the size of the bottom block 78;

[0055] The connecting strip is arranged between the rotating shaft 75 and the bottom block 78 to install the bottom block 78 on the rotating shaft 75. At the same time, the size of the connecting strip is small, so that the slider will not contact it when moving horizontally, so that when the upper end of the bottom block 78 squeezes and moves away from the slider, the movement of the slider will not be restricted.

[0056] In another embodiment of the present invention: a pulley is installed on the connecting shaft 88;

[0057] Through the pulley, the belt 87 can drive the two connecting shafts 88 to rotate.

[0058] Only certain exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. An intelligent welding system for automobile floor, comprising a processing table (1), a turntable (2) mounted on the processing table (1), a welding gun (3) fixedly mounted on the turntable (2), a welding head (4) mounted on the welding gun (3), characterized in that: A rotating ring (71) is rotatably mounted on the bottom end of the processing table (1); an inner frame (72) is fixedly mounted on the inner wall of the rotating ring (71); a slide plate (73) is slidably mounted on the inner wall of the inner frame (72); a rotating shaft (75) is rotatably mounted on the slide plate (73); and the rotating shaft (75) is fixedly mounted below the turntable (2); An electric push rod (711) is fixedly mounted on the surface of the rotating shaft (75), a movable frame (76) is fixedly mounted on the output end of the electric push rod (711), an extrusion plate (77) is horizontally slidably mounted on the inner wall of the movable frame (76), an arc-shaped displacement rod (79) is fixedly mounted on the bottom end of the processing table (1), and a bottom block (78) is fixedly mounted on the bottom end of the rotating shaft (75); When the turntable (2) rotates, it will automatically approach the thin plate (5) that currently needs to be welded, and after the thin plate (5) turns around, it can adaptively tilt and move during the movement to align with the welding point; A servo motor (74) is fixedly mounted on the slide plate (73), and gears are fixedly mounted on the output end of the servo motor (74) and the surface of the rotating shaft (75); A displacement ring (710) is fixedly mounted on the surface of the movable frame (76), and the number of the displacement rings (710) is two; A vertical plate (81) is fixedly mounted on the bottom end of the processing table (1), a slider (82) is vertically slidably mounted in the vertical plate (81), an insertion rod (83) is fixedly mounted in the slider (82), a convex plate (84) is fixedly mounted on the rotating ring (71), and an oblique groove matching the size of the insertion rod (83) is provided on the convex plate (84); A rotating wheel (85) and a limiting wheel (89) are rotatably mounted on the bottom end of the processing table (1), and a limiting mechanism is arranged on the processing table (1), the limiting mechanism comprises a connecting shaft (88), and a belt (87) is arranged on the bottom end of the processing table (1), and a long strip (86) is fixedly mounted on the belt (87); The rotating wheel (85) is arranged between the rotating ring (71) and the long strip (86), and is in close contact with both of them; The cross section of the arc-shaped displacement rod (79) is L-shaped; A slide bar is fixedly mounted on the extrusion plate (77), and a bevel is provided at one end of the slide bar close to the bottom block (78), and a spring is fixedly mounted between the extrusion plate (77) and the movable frame (76); One end of the extrusion plate (77) is arranged in an arc shape.

2. The intelligent welding system for automobile floor panel according to claim 1, characterized in that: The limiting mechanism also includes a tooling frame (61), a receiving frame (62) is fixedly mounted on the tooling frame (61), a clamping platform (63) is fixedly mounted on the receiving frame (62), a screw rod (64) is threadedly inserted on the clamping platform (63), and a pressing plate (65) is rotatably mounted on the bottom end of the screw rod (64).

3. The intelligent welding system for automobile floor panel according to claim 1, characterized in that: A connecting rod is fixedly mounted on the bottom end of the processing table (1), the connecting rod is L-shaped, and the other end of the connecting rod is fixedly connected to the arc-shaped displacement rod (79).

4. The intelligent welding system for automobile floor panel according to claim 1, characterized in that: A connecting bar is fixedly installed between the rotating shaft (75) and the bottom block (78), and the size of the connecting bar is smaller than the size of the bottom block (78).

5. The intelligent welding system for automobile floor panel according to claim 1, characterized in that: A pulley is installed on the connecting shaft (88).

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