Automatic lifting adjusting mechanism for welding gun head

Abstract

The utility model discloses an automatic lifting adjusting mechanism for a welding gun head, which belongs to the field of pipeline internal welding machines and comprises an internal welding machine welding head, a welding unit is movably mounted at the head of the internal welding machine welding head, an air cylinder is mounted on the inner wall of the internal welding machine welding head, and the output end of the air cylinder is connected to the welding unit to drive the welding unit to rotate and adjust. The welding unit comprises a fixing frame, a special-shaped welding gun vertically extending out of the surface is arranged in the fixing frame, and a motor is further horizontally and fixedly installed on the side face of the fixing frame. According to the utility model, a meshed gear and rack structure is arranged in the welding head of the internal welding machine, so that the real-time lifting adjustment of the special-shaped welding gun is realized by controlling the rotation of the motor and utilizing the transmission of the gear and the rack, and the high-precision adjustment is realized; in addition, the air cylinder is arranged to drive the welding unit to rotate around the rotating shaft, the adjusting range of the special-shaped welding gun is further widened, and the special-shaped welding gun is more suitable for application in different working environments.

Description

Technical Field

[0001] The utility model relates to the field of pipeline internal welding machines, in particular to an automatic lifting and lowering adjustment mechanism for a welding gun head. Background Art

[0002] The pipe welding machine is a special automatic welding equipment, which is mainly used for welding inside the pipe. It realizes welding inside the pipe by transmitting the welding head and power through the pipe. The pipe welding machine usually has efficient welding speed and precise welding quality, which can greatly improve welding efficiency, save time and labor costs, and improve production efficiency. The up and down adjustment of the gun head of the traditional pipe welding machine is a common problem. Since it cannot be adjusted in real time during the welding process, it can only be adjusted manually before starting welding or stopping the machine in the middle. Generally, different sizes of pads are used for adjustment; this method is not only complicated to operate, but also cannot guarantee the accuracy of the up and down adjustment. Utility Model Content

[0003] The main purpose of the utility model is to provide an automatic lifting and adjusting mechanism for a welding gun head, which can effectively solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The automatic lifting and adjusting mechanism of the welding gun head comprises an internal welding machine welding head, a welding unit is movably installed on the head of the internal welding machine welding head, a cylinder is installed on the inner wall of the internal welding machine welding head, the output end of the cylinder is connected to the welding unit to drive the welding unit to rotate and adjust, the welding unit comprises a fixed frame, a special-shaped welding gun vertically extending out of the surface is arranged inside the fixed frame, a motor is also horizontally fixedly installed on the side of the fixed frame, and the output end of the motor drives the special-shaped welding gun to rise and fall through a gear rack structure.

[0006] Preferably, both sides of the welding unit are rotatably mounted on the inner wall of the welding head of the internal welding machine via a rotating shaft, a cylinder is mounted on the inner wall of the welding head of the internal welding machine, and the output end of the cylinder is movably connected to the welding unit.

[0007] Preferably, a lifting cavity is opened on the surface of the fixing frame, and the special-shaped welding gun is placed in the lifting cavity.

[0008] Preferably, the bottom of the special-shaped welding gun is installed on a base, and a rack with an integrated structure is arranged on the side of the base.

[0009] Preferably, a mounting hole is opened on the side of the fixing frame, the motor is fixedly mounted in the mounting hole, a gear is mounted on the output end of the motor, and the gear is meshed with a rack.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the utility model, a vertical rack is arranged at the bottom of the special-shaped welding gun, and a motor is fixedly installed on the side of the fixing frame, and a gear is installed at the output end of the motor and meshes with the rack, so that the rotation of the motor is controlled and the transmission of the gear and the rack is utilized to realize real-time lifting and lowering adjustment of the special-shaped welding gun, thereby realizing high-precision adjustment; in addition, a cylinder is arranged to drive the welding unit to rotate around the rotating shaft, so that the adjustment range of the special-shaped welding gun is further improved, and it is more suitable for applications in different working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the welding unit of the utility model;

[0013] Figure 2 This is a schematic diagram of the overall structure of the automatic lifting and adjusting mechanism of the welding gun head of the utility model;

[0014] Figure 3 It is a schematic diagram of the structural section splitting of the automatic lifting and lowering adjustment mechanism of the welding gun head of the utility model.

[0015] In the figure: 1. welding head of internal welding machine; 2. cylinder; 3. welding unit; 4. rotating shaft; 5. fixing frame; 6. motor; 7. gear; 8. base; 9. rack; 10. mounting hole; 11. lifting chamber; 12. special-shaped welding gun. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] like Figure 1As shown, the automatic lifting and adjusting mechanism of the welding gun head comprises an internal welding machine welding head 1, a welding unit 3 is movably installed on the head of the internal welding machine welding head 1, a cylinder 2 is installed on the inner wall of the internal welding machine welding head 1, the output end of the cylinder 2 is connected to the welding unit 3 to drive the welding unit 3 to rotate and adjust, the two sides of the welding unit 3 are rotatably installed on the inner wall of the internal welding machine welding head 1 through a rotating shaft 4, a cylinder 2 is installed on the inner wall of the internal welding machine welding head 1, and the output end of the cylinder 2 is movably connected to the welding unit 3.

[0019] like Figure 2-Figure 3 As shown, the welding unit 3 includes a fixed frame 5, a shaped welding gun 12 vertically extending from the surface is arranged inside the fixed frame 5, a motor 6 is also horizontally fixedly installed on the side of the fixed frame 5, and the output end of the motor 6 drives the shaped welding gun 12 to rise and fall through a gear rack structure. A lifting cavity 11 is opened on the surface of the fixed frame 5, and the shaped welding gun 12 is placed in the lifting cavity 11. The bottom of the shaped welding gun 12 is installed on a base 8, and an integrated rack 9 is arranged on the side of the base 8. A mounting hole 10 is opened on the side of the fixed frame 5, and the motor 6 is fixedly installed in the mounting hole 10. A gear 7 is installed at the output end of the motor 6, and the gear 7 is meshed with the rack 9.

[0020] In actual use, the welding head 1 of the internal welding machine is distributed as the welding part of the pipeline internal welding machine, and the head part is extended into the pipeline for welding; when welding inside the pipeline, if the distance between the special-shaped welding gun 12 and the weld is too close or too far, it will affect the welding quality, so it is necessary to lift and lower the special-shaped welding gun 12. At this time, it is only necessary to control the forward and reverse rotation of the motor 6. Since the motor 6 adopts a stepping motor, the angular displacement of the rotation can be accurately controlled, so that the rotation amount of the gear 7 can be controlled, and then the lifting and lowering adjustment amount of the rack 9 is controlled, and the rack 9 and the base 8 is an integrated structure, and the special-shaped welding gun 12 is installed on the base 8, so that the purpose of accurately controlling the lifting and lowering adjustment of the special-shaped welding gun 12 is achieved, and the operation is simple; in addition, the angle between the special-shaped welding gun 12 and the weld during welding will also affect the welding quality, and by controlling the cylinder 2 to start the control of the gas rod to extend or retract, the end of the gas rod is rotatably connected to the welding unit 3 (directly connected to the fixing frame 5), so that the welding unit 3 can be controlled to rotate in a fan shape around the rotating shaft 4 on both sides, thereby adjusting the angle of the special-shaped welding gun 12, which is convenient for adjusting the appropriate welding angle.

[0021] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic lifting and adjusting mechanism for a welding gun head, comprising an internal welding machine welding head (1), wherein a welding unit (3) is movably mounted on the head of the internal welding machine welding head (1), characterized in that: A cylinder (2) is installed on the inner wall of the welding head (1) of the internal welding machine, and the output end of the cylinder (2) is connected to the welding unit (3) to drive the welding unit (3) to rotate and adjust. The welding unit (3) includes a fixed frame (5), and a special-shaped welding gun (12) vertically extending out of the surface is arranged inside the fixed frame (5). A motor (6) is also horizontally fixedly installed on the side of the fixed frame (5), and the output end of the motor (6) drives the special-shaped welding gun (12) to rise and fall through a gear rack structure.

2. The automatic lifting and adjusting mechanism for the welding gun head according to claim 1 is characterized in that: The two sides of the welding unit (3) are rotatably mounted on the inner wall of the welding head (1) of the internal welding machine via a rotating shaft (4), and a cylinder (2) is mounted on the inner wall of the welding head (1) of the internal welding machine, and the output end of the cylinder (2) is movably connected to the welding unit (3).

3. The automatic lifting and adjusting mechanism for the welding gun head according to claim 1 is characterized in that: A lifting cavity (11) is provided on the surface of the fixing frame (5), and the special-shaped welding gun (12) is placed in the lifting cavity (11).

4. The automatic lifting and adjusting mechanism for the welding gun head according to claim 3 is characterized in that: The bottom of the special-shaped welding gun (12) is installed on a base (8), and a rack (9) of an integrated structure is arranged on the side of the base (8).

5. The automatic lifting and adjusting mechanism for the welding gun head according to claim 4 is characterized in that: A mounting hole (10) is provided on the side of the fixing frame (5), and the motor (6) is fixedly mounted in the mounting hole (10). A gear (7) is mounted on the output end of the motor (6), and the gear (7) is meshed with a rack (9).

Images