Intelligent welding system for automobile bottom plate

Abstract

The invention discloses an intelligent welding system for an automobile bottom plate, and relates to the technical field of welding, the intelligent welding system comprises a machining table, a rotary table is mounted on the machining table, a welding gun is fixedly mounted on the rotary table, a welding head is mounted on the welding gun, a rotary ring is rotatably mounted at the bottom end of the machining table, and an inner frame is fixedly mounted on the inner wall of the rotary ring. When welding needs to be carried out, a worker places a thin plate on the tool frame to be fixed, welding can be automatically carried out only by driving the rotary table to rotate through the servo motor, meanwhile, in the welding process, angle rotation can be carried out on the thin plate through the electric push rod, and when the thin plate is subjected to angle rotation, the welding efficiency is greatly improved. The position of the rotary table can be adjusted in a self-adaptive mode so that the rotary table can be matched with a welding point of the rotated thin plate, and therefore the rotary table can still rotate in the follow-up welding process to conduct welding.

Description

Technical Field

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

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic. In the processing of automobile floor, it is usually necessary to use electric welding to weld some welding rods on it to improve stability;

[0003] In the process of welding the vehicle floor panels in the factory, the welding points of the welding rods on the same batch of vehicle floor panels have the same position. When welding, the staff often need to move the floor panels to the tooling, then fix them, then install the welding rods on the floor panels, and then take out the welding gun for welding operations. This welding method is inefficient and troublesome. Although some large factories use visual robots and other methods to perform fully automatic welding operations, their costs are high and cannot be fully applied 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-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent welding system for automobile floor, comprising 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 swivel is rotatably installed on the bottom end of the processing table, an inner frame is fixedly installed on the inner wall of the swivel, a slide is slidably installed on the inner wall of the inner frame, a rotating shaft is rotatably installed on the slide, and the rotating shaft is fixedly installed below the turntable; an electric push rod is fixedly installed on the surface of the rotating shaft, a movable frame is fixedly installed on the output end of the electric push rod, an extrusion plate is horizontally slidably installed on the inner wall of the movable frame, an arc displacement rod is fixedly installed on the bottom end of the processing table, and a bottom block is fixedly installed on the bottom end of the rotating shaft; when the turntable rotates, it will automatically approach the thin plate that currently needs to be welded, 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 mounted on the slide plate, and gears are fixedly mounted on the output end of the servo motor and the surface of the rotating shaft.

[0007] Preferably, a displacement ring is fixedly mounted on the surface of the movable frame, and the number of the 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 oblique groove matching the size of the plug rod is opened on the convex plate;

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

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

[0011] Preferably, a slide bar is fixedly mounted on the extrusion plate, and an end of the slide bar close to the bottom block is provided with a bevel, and a spring is fixedly mounted between the extrusion plate and the movable frame.

[0012] Preferably, one end of the extrusion plate is arranged in an arc shape.

[0013] Preferably, the limiting mechanism further comprises a tooling frame, on which a receiving frame is fixedly mounted, on which a clamping platform is fixedly mounted, on which a screw is threadedly inserted, and on which a pressure plate is rotatably mounted the bottom end of the screw.

[0014] Preferably, a connecting rod is fixedly mounted on 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 bar is fixedly installed between the rotating shaft and the bottom block, and the size of the connecting bar is smaller than the size of the bottom block.

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

[0017] In the above technical scheme, the present invention provides an intelligent welding system for automobile floor, which has the following beneficial effects: when welding is required, the staff puts the thin plate on the tooling frame for fixing, and only needs the servo motor to drive the turntable to rotate to automatically perform welding. At the same time, during the welding process, the thin plate can be rotated at an angle by the electric push rod, and while the thin plate is rotated at an 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 to perform welding, and when the welding gun is welding one of the thin plates, the staff can disassemble and replace the other welded thin plate, thereby improving the welding efficiency. BRIEF 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] Figure 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] Fig. 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 Figure 1-9, an intelligent welding system for automobile floor, 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 swivel 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 swivel 71, a slide plate 73 is slidably installed on the inner wall of the inner frame 72, a rotating shaft 75 is rotatably installed on the slide plate 73, and the rotating shaft 75 is fixedly installed below the turntable 2;

[0031] 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;

[0032] 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 its direction, it can adaptively tilt and move during the movement to align with the welding point.

[0033] In another embodiment of the present invention: 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;

[0034] After the servo motor 74 is started, it will drive the rotating shaft 75 to rotate through the gear. When the rotating shaft 75 rotates, it will drive the electric push rod 711 and the movable frame 76 to rotate synchronously. At this time, the movable frame 76 will drive the extrusion plate 77 to start rotating. The extrusion plate 77 and the welding head 4 are arranged relative to each other, that is, the extrusion plate 77 is arranged at the end away from the welding head 4. Therefore, when the welding head 4 is close to a certain thin plate 5, the extrusion plate 77 is located behind the welding head 4. At this time, the welding head 4 will contact the arc displacement rod 79, thereby pushing the slide plate 73 to slide in the inner frame 72, so that the welding head 4 is aligned 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 to 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 mounted 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, an insertion 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 matching the size of the insertion rod 83 is opened on the convex plate 84;

[0038] A rotating wheel 85 and a limiting wheel 89 are rotatably mounted at the bottom end of the processing table 1, and a limiting mechanism is arranged on the processing table 1, the limiting mechanism includes a connecting shaft 88, and a belt 87 is arranged at the bottom end of the processing table 1, and a long strip 86 is fixedly mounted on the belt 87;

[0039] The belt 87 is connected through the limit wheel 89, the rotating wheel 85 and the connecting shaft 88, so that the limit mechanisms at both ends are synchronously connected together. At the same time, the rotating wheel 85 is set at the middle position of the belt 87. When the servo motor 74 drives the welding gun 3 to rotate one circle, 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 move vertically in the vertical plate 81 through the slider 82, and because the end of the insertion rod 83 close to the convex plate 84 is inserted in 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 and the rotating ring 71 are fixedly connected together, so at this time, the rotating ring 71 will be driven to rotate;

[0040] The rotating wheel 85 is arranged between the rotating ring 71 and the long strip 86, and fits with both. When the rotating ring 71 rotates, it will drive the rotating wheel 85 to rotate, and when the rotating wheel 85 rotates, it will drive the long strip 86 to move. At this time, the long strip 86 will drive the belt 87 to slide, and 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, thereby driving the tooling frame 61 to rotate, so that the thin plate 5 is rotated;

[0041] The small angle rotation of the rotating ring 71 will drive the connecting shaft 88 to rotate through the rotating wheel 85, the long strip 86 and the belt 87, so that the connecting shaft 88 rotates half a circle 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 to perform welding;

[0042] A damper is provided between the rotating ring 71 and the processing table 1 so that the rotating ring 71 will not rotate randomly in a natural state.

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

[0044] When the electric push rod 711 drives the movable frame 76 to move up and down, the extrusion plate 77 in the movable frame 76 will also move up and down synchronously. Figure 6 When the extrusion plate 77 moves up and down, it will contact the inner wall of the arc displacement plate with different thicknesses;

[0045] Among them, when welding some existing vehicle frame thin plates 5, it is usually necessary to weld two welding rods thereon to improve stability or safety, but most vehicle frames are of special shapes. Taking the present application as an example, two welding rods need to be welded on the vehicle frame thin plate 5, but the two welding rods are of different lengths. 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 frames 61, it is only necessary to rotate it to ensure that each welding point is on the route. However, when the thin plate 5 is rotated half a circle to turn the other end of the welding rod over, refer to Figure 8 At this time, the two welding rods are often no longer on the same vertical line, and after they are rotated to the same vertical line, the midpoint position of the connecting line between their welding points is also moved downward. At this time, the direct rotation of the turntable 2 will deviate from the welding point. At this time, if welding is required, the electric push rod 711 is started to make the electric push rod 711 move upward. When the electric push rod 711 moves upward, the squeezing plate 77 will be pulled by the spring thereon and move toward the movable frame 76, thereby shortening the extended length. At this time, when the rotating shaft 75 drives the turntable 2 to rotate, the squeezing 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 squeezing plate 77 drive the rotating shaft 75 and the slide 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. Figure 8 In a normal state, the inner frame 72 remains horizontal. At this time, the center of the turntable 2 is located at the upper end of the track a. When the other end of the welding rod on the thin plate 5 rotates over, the welding point is offset. At the same time, the center position of the turntable 2 should move toward the lower right along the track a. Therefore, the inner frame 72 will rotate clockwise at a small angle to the right horizontally, so that the turntable 2 moves toward the lower right along the track a when it moves through the arc-shaped displacement rod 79. At the same time, the extrusion plate 77 will move a little further toward the lower right through the thickness end of the arc-shaped displacement rod 79, so as to move to the lower right of the track a. At this time, the rotation of the turntable 2 will be a solid circle track, which is convenient for welding the uneven ends of the two welding rods on the thin plate 5.

[0046] In another embodiment of the present invention: 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;

[0047] The extrusion plate 77 is horizontally slidably mounted in the movable frame 76 through the slide bar thereon. 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. Figure 6When the movable frame 76 moves downward, it will drive the slide bar to move downward. At this time, the bevel on the slide bar will contact the bottom block 78, so that the slide bar drives the extrusion plate 77 to move outward. At this time, the spring will be stretched. When the movable frame 76 moves upward, the bevel of the slide bar will be away from the bottom block 78. At this time, the spring will pull the extrusion plate 77 inward, thereby reducing the extended length.

[0048] In another embodiment of the present invention: one end of the extrusion plate 77 is arranged in an arc shape;

[0049] The arc-shaped arrangement on the extrusion plate 77 allows the extrusion plate 77 to slide into the arc-shaped displacement rod 79 when it approaches the arc-shaped displacement rod 79 , thereby pushing the slide plate 73 to move in the inner frame 72 .

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

[0051] The thin plate 5 can be placed on the receiving table, and then the screw 64 is rotated. The screw 64 will squeeze and limit the thin plate 5 through the pressure plate 65. The bottom end of the receiving frame 62 is fixedly installed with an insertion strip, which can be inserted into the tooling frame 61 and fixed and locked with screws, 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] The arc displacement rod 79 can be installed below the swivel 71 and closer to the extrusion plate 77 through a connecting rod.

[0054] In another embodiment of the present invention: 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;

[0055] The connecting bar 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 bar is small so that the slide bar will not abut against it when it moves horizontally, so that when the upper end of the bottom block 78 squeezes and moves away from the slide bar, the movement of the slide bar will not be restricted.

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

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

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection 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.

2. The intelligent welding system for automobile floor panel according to claim 1, characterized in that: 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).

3. The intelligent welding system for automobile floor panel according to claim 2 is characterized in that: 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).

4. The intelligent welding system for automobile floor panel according to claim 3 is characterized in that: The cross section of the arc-shaped displacement rod (79) is L-shaped.

5. The intelligent welding system for automobile floor panel according to claim 4, characterized in that: A slide bar is fixedly mounted on the extrusion plate (77), and an end of the slide bar close to the bottom block (78) is provided with a bevel, and a spring is fixedly mounted between the extrusion plate (77) and the movable frame (76).

6. The intelligent welding system for automobile floor panel according to claim 5, characterized in that: One end of the extrusion plate (77) is arranged in an arc shape.

7. The intelligent welding system for automobile floor panel according to claim 6, 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).

8. The intelligent welding system for automobile floor panel according to claim 4, 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).

9. The intelligent welding system for automobile floor panel according to claim 2, 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).

10. The intelligent welding system for automobile floor panel according to claim 3, characterized in that: A pulley is installed on the connecting shaft (88).

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