Welding device capable of meeting requirements of narrow and deep inner seams

Abstract

The utility model discloses a narrow and deep inner seam welding device which is characterized in that a gantry welding lifting arm is fixedly connected with a fixing block and an air cylinder fixing device, the side surface of the fixing block is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotary hollow speed reducer, the fixing block is provided with a groove, and a spline is arranged in the groove. A welding gun is arranged at the end, away from the fixing block, of the spline, an air cylinder is fixedly connected to the air cylinder fixing device, a floating connector is fixedly connected to the output end of the air cylinder, and a fixed bearing piece is fixedly connected to the end, away from the air cylinder, of the floating connector. By means of the structure, welding of high and low weld joints of workpieces is met, the direction and the position of the welding gun can be changed through the motor, so that the range of the weld joints is enlarged, and meanwhile the situation that narrow workpieces cannot be welded due to the fact that a gantry arm is large in size can be avoided through stretching and retracting of the spline.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices for narrow and deep internal seams, and particularly relates to a welding device for narrow and deep internal seams. Background Art

[0002] In the existing welding devices, during welding, the width and depth of the workpiece intervals often vary. Since the size of the gantry lifting arm is large, it cannot meet the welding requirements of narrow workpieces, and the welding range of the weld seam is small. For example, the Chinese patent discloses a "gantry welding device" with the application number: "CN201520710475.X", which includes a gantry welding frame and a roller frame. The roller frame includes a linear guide rail and a moving seat; the moving seat includes a base and a supporting device; rollers cooperating with the linear guide rail are arranged on the base; the supporting device includes a supporting seat and a connecting seat, and supporting wheels are arranged on the connecting seat; the gantry welding frame includes a frame, a welding mechanism, a lifting frame, a lifting motor and a lead screw. The welding mechanism is fixed on the lifting frame. The frame includes a support and a cross beam. A track groove is formed on the support, and a slider is arranged on the lifting frame. The slider is fitted in the track groove. The lead screw is in threaded cooperation with the slider, and the lifting motor controls the lead screw. With the above structure, it is convenient to use. However, when in use, for the situation where the width and depth of the workpiece intervals are different, due to the large size of the gantry lifting arm, it cannot meet the welding requirements of narrow workpieces, and the welding range of the weld seam is small, so there are limitations in use. Summary of the Utility Model

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a welding device for narrow and deep internal seams. By providing a fixed block, a cylinder fixing device, a motor, a rotary hollow reducer, a spline, a spline nut, a welding torch, a fixed bearing part, and a fixed bearing plate, it can meet the situation where the width and depth of the workpiece intervals are different, and can also meet the welding of weld seams at different heights of the workpiece. By controlling the motor, the direction and position of the welding torch can be changed, so as to expand the range of the weld seam. At the same time, the telescopic movement of the spline can avoid the situation that the gantry arm is too large to weld narrow workpieces.

[0004] The present utility model also provides a narrow and deep internal seam welding device satisfying the above, including: a gantry welding lifting arm, on which a fixed block and a cylinder fixing device are fixedly connected. A motor is fixedly connected to the side surface of the fixed block, and the output end of the motor is fixedly connected to a rotary hollow speed reducer. A groove is provided on the fixed block, a spline is arranged in the groove, a spline nut is arranged on the spline, and the spline nut is movably connected to the rotary hollow speed reducer. A welding torch is arranged at one end of the spline away from the fixed block. A cylinder is fixedly connected to the cylinder fixing device, and a floating joint is fixedly connected to the output end of the cylinder. A fixed bearing member is fixedly connected to one end of the floating joint away from the cylinder, and a fixed bearing plate is arranged on the fixed bearing member. The fixed bearing plate is connected to the spline through a bearing. Through the above structure, it can meet the situations where the intervals between workpieces are different in width and depth, and can also meet the welding of welds at different heights of workpieces. By controlling the motor, the direction and position of the welding torch can be changed, so as to expand the range of the weld. At the same time, the telescoping of the spline can avoid the situation that due to the large size of the gantry arm, it is impossible to weld narrow workpieces.

[0005] According to the narrow and deep internal seam welding device described in the present utility model, a spline gun head nut connecting piece is fixedly connected to one end of the spline away from the cylinder, and a fixed welding torch connecting piece is fixedly connected to one end of the spline gun head nut connecting piece away from the spline. The welding torch is connected to the spline through the fixed welding torch connecting piece and the spline gun head nut connecting piece. Through the above structure, it is convenient to fix the welding torch, so that when the spline rotates, the welding torch is driven to rotate.

[0006] According to the narrow and deep internal seam welding device described in the present utility model, a support block is arranged on the side surface of the motor, and a reinforcing rod bolt is arranged on the support block. The reinforcing rod bolt penetrates through the gantry welding lifting arm and is threadedly connected to the gantry welding lifting arm, and extends to the upper surface of the gantry welding lifting arm. Through the above structure, it is convenient to fix the whole, and avoid falling off from the gantry welding lifting arm.

[0007] According to the narrow and deep internal seam welding device described in the present utility model, a hexagonal nut is arranged on the side surface of the fixed bearing plate, and the hexagonal nut is fixedly connected to the fixed bearing member through a common bolt. Through the above structure, it is convenient to fix the fixed bearing plate.

[0008] Beneficial effects

[0009] Compared with the prior art, this narrow and deep internal seam welding device can meet the situations where the intervals between workpieces are different in width and depth, and can also meet the welding of welds at different heights of workpieces. By setting a fixed block, a cylinder fixing device, a motor, a rotary hollow reducer, a spline, a spline nut, a welding torch, a fixed bearing part, and a fixed bearing plate, the direction and position of the welding torch can be controlled by the motor, thereby expanding the range of the weld seam. At the same time, the telescopic movement of the spline can avoid the situation where the large size of the gantry arm prevents the welding of narrow workpieces. Brief Description of the Drawings

[0010] The present invention will be further described below in conjunction with the drawings and embodiments;

[0011] Figure 1 It is the overall structure diagram of a narrow and deep internal seam welding device of the present invention;

[0012] Figure 2 It is the overall structure diagram of the spline of a narrow and deep internal seam welding device of the present invention;

[0013] Figure 3 It is the structure diagram of the floating joint of a narrow and deep internal seam welding device of the present invention;

[0014] Figure 4 It is the structure diagram of the rotary hollow reducer of a narrow and deep internal seam welding device of the present invention.

[0015] Legend Explanation:

[0016] 1. Gantry welding lifting arm; 2. Rotary hollow reducer; 3. Spline nut; 4. Fixed block; 5. Cylinder; 6. Motor; 7. Floating joint; 8. Welding torch; 9. Fixed welding torch connecting piece; 10. Fixed bearing plate; 11. Fixed bearing part; 12. Spline; 13. Hexagonal nut; 14. Reinforcing rod bolt; 15. Spline gun head nut connecting piece; 16. Cylinder fixing device. Detailed Description of the Specific Embodiment

[0017] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0018] Refer to Figures 1-4, an embodiment of the utility model is a narrow and deep inner seam welding device, which includes: a gantry welding lifting arm 1, a fixed block 4 and a cylinder fixing device 16 are fixedly connected to the gantry welding lifting arm 1, a motor 6 is fixedly connected to the side surface of the fixed block 4, a support block is arranged on the side surface of the motor 6, a reinforcing rod bolt 14 is arranged on the support block, the reinforcing rod bolt 14 penetrates through the gantry welding lifting arm 1 and is threadedly connected to the gantry welding lifting arm 1, and extends to the upper surface of the gantry welding lifting arm 1 to facilitate the fixation of the whole. The output end of the motor 6 is fixedly connected to a rotary hollow reducer 2 to drive the rotary hollow reducer 2 to rotate. A groove is arranged on the fixed block 4, a spline 12 is arranged in the groove, one end of the spline 12 away from the cylinder 5 is fixedly connected to a spline gun head nut connecting piece 15, and one end of the spline gun head nut connecting piece 15 away from the spline 12 is fixedly connected to a fixed welding gun connecting piece 9. The welding gun 8 is connected to the spline 12 through the fixed welding gun connecting piece 9 and the spline gun head nut connecting piece 15 to facilitate the fixation of the welding gun 8. A spline nut 3 is arranged on the spline 12, and the spline nut 3 is movably connected to the rotary hollow reducer 2 to facilitate driving the spline nut 3 to rotate. A welding gun 8 is arranged at one end of the spline 12 away from the fixed block 4 to drive the welding gun 8 to rotate. A cylinder 5 is fixedly connected to the cylinder fixing device 16 to fix the cylinder 5. The output end of the cylinder 5 is fixedly connected to a floating joint 7 to drive the floating joint 7 to move. One end of the floating joint 7 away from the cylinder 5 is fixedly connected to a fixed bearing part 11. A fixed bearing plate 10 is arranged on the fixed bearing part 11. The fixed bearing plate 10 is connected to the spline 12 through a bearing to facilitate the rotation of the spline 12. A hexagonal nut 13 is arranged on the side surface of the fixed bearing plate 10, and the hexagonal nut 13 is fixedly connected to the fixed bearing part 11 through a common bolt to fix the fixed bearing plate 10.

[0019] Working principle: When in use, the telescopic movement of the cylinder 5 drives the welding gun 8 to move, so as to meet the welding of the weld seams at different heights of the workpiece. Through the control of the motor 6 and the rotary hollow reducer 2, the spline nut 3 rotates, and then drives the spline 12 to rotate, so that the welding gun 8 can rotate, thereby changing the direction position of the welding gun and facilitating the adjustment of the angle.

[0020] The above has described the embodiments of the utility model in detail with reference to the drawings. However, the utility model is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which it pertains, various changes can be made without departing from the purpose of the utility model.

Claims

1. A device for welding narrow and deep inner seams, characterized in that: include: A gantry welding lifting arm (1), wherein a fixing block (4) and a cylinder fixing device (16) are fixedly connected to the gantry welding lifting arm (1), a motor (6) is fixedly connected to the side surface of the fixing block (4), and a rotary hollow reducer (2) is fixedly connected to the output end of the motor (6), a groove is provided on the fixing block (4), a spline (12) is provided in the groove, a spline nut (3) is provided on the spline (12), and the spline nut (3) is connected to the rotary hollow reducer (2) A movable connection is provided, wherein a welding gun (8) is provided at one end of the spline (12) away from the fixed block (4), a cylinder (5) is fixedly connected to the cylinder fixing device (16), a floating joint (7) is fixedly connected to the output end of the cylinder (5), and a fixed bearing member (11) is fixedly connected to one end of the floating joint (7) away from the cylinder (5), a fixed bearing plate (10) is provided on the fixed bearing member (11), and the fixed bearing plate (10) is connected to the spline (12) via a bearing.

2. A narrow and deep inner seam welding device according to claim 1, characterized in that: The end of the spline (12) away from the cylinder (5) is fixedly connected to a spline gun head nut connector (15), and the end of the spline gun head nut connector (15) away from the spline (12) is fixedly connected to a fixed welding gun connector (9), and the welding gun (8) is connected to the spline (12) via the fixed welding gun connector (9) and the spline gun head nut connector (15).

3. The narrow and deep inner seam welding device according to claim 1 is characterized in that: A support block is provided on the side surface of the motor (6), and a reinforcing rod bolt (14) is provided on the support block. The reinforcing rod bolt (14) passes through the gantry welding lifting arm (1) and is threadedly connected to the gantry welding lifting arm (1), and extends to the upper surface of the gantry welding lifting arm (1).

4. The narrow and deep inner seam welding device according to claim 1 is characterized in that: A hexagonal nut (13) is provided on the side surface of the fixed bearing plate (10), and the hexagonal nut (13) is fixedly connected to the fixed bearing member (11) by means of common bolts.

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