Automatic welding machine for aviation conduit

Abstract

The utility model relates to welding equipment, in particular to an automatic welding machine for aviation conduits. The manufacturing efficiency and the process quality of the aviation conduit can be improved, and labor force is liberated. Comprising a workbench, the workbench is provided with a rack, the rack is provided with a vertical open type track pressing disc, the periphery of an opening in the upper portion of the track pressing disc is provided with a track used for installing a track gear, and the track gear and the track are in meshing transmission connection and jointly form a track type fluted disc; a planetary gear is rotationally mounted on each of two sides of the track gear at the lower part of the track pressure plate, and the two planetary gears are in meshing transmission connection with outer teeth of the track gear; the two planetary gears are driven by a servo motor to rotate; inner teeth of the track gear are connected with a mounting attachment plate, and a welding gun is mounted on the mounting attachment plate. The two sides of the rack are each provided with a clamping mechanism used for clamping and fixing a guide pipe to be welded.

Description

Technical Field

[0001] The utility model relates to welding equipment, in particular to an automatic welding machine for aviation conduits. Background Art

[0002] Aluminum alloy conduits are important components of fuel system pipelines, and fuel flows to various parts of the system through conduits. Since the pipeline needs to adapt to the system structure and meet the design principles in the design, the design of the conduit is relatively complicated. In addition to using pipe bending machines and expanding machines to complete the manufacture of some pipelines. There are also some conduits that need to be welded, such as connector joints, tee interfaces, etc. Therefore, it is necessary to design "an aluminum alloy conduit automatic welding machine" to meet the conduit welding needs in the production process.

[0003] At present, aluminum alloy conduit welding generally adopts manual butt welding, and the welder operates the welding gun to weld around the pipe. Or use a vise to fix one end and hold the other end for welding. For the port butt welding process of aluminum pipes, it is limited to manual operation by the operator. The port butt welding process has extremely high requirements for the operation skills of the welding operator himself. The long-term high concentration of the personnel can easily cause fatigue to the body, and it is also a great damage to the eyesight of the employees.

[0004] There are some welding equipment on the market, which are mostly used for large steel pipelines and are generally used outdoors. When welding, the pipeline needs to be welded at several points in advance to make the pipeline connected as a whole, which requires the pipeline to have a certain degree of rigidity. The equipment is placed on the outer wall of the pipeline, and the pipeline is used as the equipment support. The equipment rotates around the outer wall of the pipeline or the welding gun rotates around the equipment to complete the welding of the pipeline.

[0005] Existing pipeline welding equipment is only used on pipelines with large rigidity. The pipeline is used as a fulcrum, and the equipment is centered by manually adjusting bolts or tightening structures before welding. The outer wall of the pipeline is required to meet certain dimensions and rigidity, and the end face cannot be deformed when clamped. As the main pipeline in the fuel pipeline, the aluminum alloy conduit only needs to meet the specified pressure and flow. The wall thickness is generally about 1 mm, and the pipe diameter is between Φ25-Φ75. The wall thickness is thin and the pipe diameter is small. The strength is low, the structure is complex, and the structure of the clamping part is irregular. The welding equipment currently on the market cannot meet the welding needs. Summary of the invention

[0006] The utility model aims at the defects of the prior art and provides an automatic welding machine for aviation conduits, which can improve the manufacturing efficiency and process quality of aviation conduits and liberate labor.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme, including a workbench, a frame is arranged on the workbench, a vertical open-type track pressure plate is arranged on the frame, a track for installing a track gear is arranged on the open outer periphery of the upper part of the track pressure plate, and the track gear is meshingly connected with the track, and the two together constitute a track-type geared disc; a planetary gear is rotatably installed on the lower part of the track pressure plate and on both sides of the track gear, and the two planetary gears are meshingly connected with the external teeth of the track gear; and the two planetary gears are driven to rotate by a servo motor; the inner teeth of the track gear are connected to a mounting plate, and a welding gun is installed on the mounting plate; a clamping mechanism for clamping and fixing the conduit to be welded is arranged on each side of the frame.

[0008] Furthermore, after the conduit to be welded is clamped and fixed, the conduit to be welded passes through the middle (middle hole) of the track gear.

[0009] Furthermore, the track gear adopts an open-loop gear (ie, an open-position gear).

[0010] Furthermore, the servo motor is installed on the track pressure plate, and a driving gear is installed outside the output shaft of the servo motor, and the driving gear is respectively connected to the planetary gears on both sides by meshing transmission.

[0011] Furthermore, the welding gun is fixed on the mounting attachment plate through a welding gun holder.

[0012] Furthermore, the two clamping mechanisms are a left clamping mechanism and a right clamping mechanism, wherein the left clamping mechanism and the right clamping mechanism both include an electric linear module (slide) and two clamping arms arranged on the electric linear module; wherein the left clamping arm is fixed on the first slider of the electric linear module, and the right clamping arm is fixed on the second slider of the electric linear module; a clamping claw is respectively arranged at the end of the left clamping arm and the right clamping arm, and the clamping claw adopts a block structure, and a V-shaped groove is arranged on the clamping surface of the block structure for facilitating clamping of the catheter.

[0013] Furthermore, a horizontal support plate is arranged on one side of the frame, the left clamping mechanism of the two clamping mechanisms is arranged on the support plate, and the electric linear module of the right clamping mechanism is installed on the frame.

[0014] Furthermore, a movable slide is installed on the support plate, and the left clamping mechanism is installed on the movable slide. The movable slide includes a base plate, and a ball screw is rotatably installed on the base frame. A linear guide rail parallel to the base frame and both sides of the ball screw are respectively arranged, and a nut slider is connected to the slider on the linear guide rail, and the nut slider is transmission-connected to the ball screw, and the ball screw is driven to rotate by a stepper motor to drive the nut slider thereon to move forward and backward along the linear guide rail; the electric linear module of the left clamping mechanism is installed on the nut slider to realize the adjustable clamping position of the left clamping mechanism along the conduit to be welded.

[0015] Furthermore, a tensioning device is also provided on the rail pressure plate, and the tensioning device includes a fixed block installed on the rail pressure plate and an adjusting bolt arranged on the fixed block. The fixed block is connected to the rail pressure plate through a fastener. After the adjusting bolt passes through the fixed block, a pressure block is provided on the protruding end. The adjusting bolt is threadedly connected to the fixed block, and the middle part of the fixed block is vertically connected to the adjusting bolt. A rolling bearing is provided at each end of the fixed block, and the two rolling bearings are in contact with the mounting plate to act on the mounting plate.

[0016] Compared with the prior art, the utility model has beneficial effects.

[0017] The utility model can solve the problems of angle deviation in the welding engineering of aluminum alloy conduits, difficulty in ensuring coaxiality during welding, the need for professional personnel to operate welding, poor working environment conditions, and low welding efficiency. It aims to improve the manufacturing efficiency and process quality of conduits to liberate labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the utility model is not limited to the following descriptions.

[0019] Figure 1-4 It is a schematic diagram of the structure of an aviation duct automatic welding machine.

[0020] Figure 5 It is a structural diagram of the tensioning mechanism.

[0021] Figure 6 It is a schematic diagram of gear transmission.

[0022] Figure 7 This is the schematic diagram of the track pressure plate structure Figure 1 .

[0023] Figure 8 This is the schematic diagram of the track pressure plate structure Figure 2 .

[0024] Fig. 9 It is a schematic diagram of the open-loop gear structure.

[0025] Fig.10 yes Figure 1 A partial enlarged schematic diagram of .

[0026] Fig.11 yes Figure 2 A partial enlarged schematic diagram of .

[0027] In the figure, 1, tensioning device; 2, mounting plate; 3, clamping mechanism; 4, servo motor; 5, operation panel; 6, welding gun; 7, welding gun stand; 8, workbench; 9, frame; 10, L-shaped angle plate; 11, support plate; 12, bottom frame; 13, stepper motor 1; 14, stepper motor 2; 15, stepper motor 3; 16, track pressure plate; 17, aluminum tube; 18, track gear plate; 19, electric linear module; 20, left clamping arm; 21, right clamping arm; 22, clamping claw; 23, V-groove; 24, moving slide; 25, slider; 26, planetary gear; 27, driving gear; 28, opening on the upper part of the track pressure plate;

[0028] 101. Rolling bearing; 102. Pressure block; 103. Locking nut; 104. Fixing block; 105. Adjusting bolt. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and beneficial effects of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments.

[0030] like Figure 1-11 As shown, the aviation duct automatic welding machine includes a workbench 8, on which a frame 9 is arranged, on which a vertical open-type track pressure plate 16 is arranged, and an open outer periphery on the upper part of the track pressure plate 16 is provided with a track for installing an open-loop gear (also known as an open position gear), and the open-loop gear is meshed with the track, and the two together form a track-type gear plate 18.

[0031] Among them, the track structure is: the track-type gear disc 18 is meshed with a fixed track. The track has a series of teeth corresponding to the teeth on the gear disc body (open-loop gear body), and the meshing between the two realizes the transmission of power or the movement of position. The track matches the gear disc. This is a conventional technology and will not be elaborated. The track-type gear disc 18 is intended to realize the rotation function of the equipment. Because there will be a demand for welding large pipelines, if the gear disc is made into a closed type, it may cause the workpiece to be unable to be removed after the welding of large special-shaped pipelines is completed. Therefore, an open gear disc (i.e., an open position gear) design is adopted.

[0032] A planetary gear 26 is rotatably installed on the lower part of the track pressure plate 16 and on both sides of the open ring gear, and the two planetary gears 26 are meshed and connected with the external teeth of the open ring gear; and the two planetary gears 26 are driven to rotate by the servo motor 4; the internal teeth of the open ring gear are connected to a mounting attachment plate 2, and a welding gun 6 is installed on the mounting attachment plate 2; the welding gun 6 is fixed to the mounting attachment plate 2 through a welding gun 6 bracket. The servo motor 4 drives the open ring gear to rotate, and then drives the mounting attachment plate 2 to rotate, and finally realizes the rotation of the welding gun 6 to a certain angle. A clamping mechanism 3 for clamping and fixing the pipe to be welded is provided on both sides of the frame 9, and after the pipe to be welded is clamped and fixed, the pipe to be welded passes through the middle (middle through hole) of the open ring gear.

[0033] Among them, the mounting plate 2 is used to provide a mounting platform for the welding gun 6 and some accessories. The mounting plate 2 is connected to the built-in track gear disc through a bolt positioning pin, and different accessories can be installed according to the welding form to meet the processing requirements under different working conditions. The track gear disc 18 is driven to rotate by two planetary gears 26. The addition of two planetary gears can make the track gear disc 18 rotate more smoothly, avoiding the vibration of the entire gear disc due to the meshing vibration of the open position gear, thereby affecting the welding quality of the workpiece. The track pressure plate 16 is used to limit the axial displacement of the track gear disc, and is also the mounting plate for the planetary gear 26 and the stepper motor.

[0034] The utility model is a track-type aluminum alloy conduit welding machine, which will fill the gap in aluminum conduit welding technology. The automatic welding of the equipment will greatly reduce the damage to welding workers, and can also make up for the shortcomings of employees' own lack of skills to a certain extent.

[0035] Preferably, the servo motor 4 is mounted on the rail pressure plate 16 , and a driving gear 27 is mounted outside the output shaft of the servo motor 4 , and the driving gear 27 is meshed and transmission-connected with the planetary gears 26 on both sides respectively.

[0036] The servo motor 4 rotates, driving the driving gear 27 to rotate, and the driving gear 27 drives the two planetary gears 26 to rotate, thereby driving the track-type gear disc 18 to rotate along the track. Preferably, the two clamping mechanisms 3 are a left clamping mechanism 3 and a right clamping mechanism 3, wherein the left clamping mechanism 3 and the right clamping mechanism 3 both include an electric linear module 19 (slide), and two clamping arms arranged on the electric linear module 19; wherein the left clamping arm 20 is fixed on the first slider 25 of the electric linear module 19, and the right clamping arm 21 is fixed on the second slider 25 of the electric linear module 19; a clamping claw 22 is respectively arranged at the end of the left clamping arm 20 and the right clamping arm 21, and the clamping claw 22 adopts a block structure, and a V-shaped groove is arranged on the clamping surface of the block structure for facilitating the clamping of the catheter.

[0037] Embodiment 1: The clamping mechanism 3 is used for fastening welding parts. The clamping mechanism 3 is mounted on the slider 25 of the electric linear module 19, and the rotation of the lead screw enables the clamping mechanism 3 to be retracted and extended. The clamping mechanism 3 can replace the clamping claw 22. It is used for clamping different types of workpieces. The clamping mechanism 3 realizes the clamping requirements of pipelines of different specifications through a pre-set clamping force. Specifically, the clamping mechanism 3 is a mechanical arm clamp composed of an electric linear module 19, a left clamping arm 20 and a right clamping arm 21, wherein the electric linear module 19: is responsible for providing power for linear motion. It includes a stepper motor three 15 or a stepper motor two 14, a transmission mechanism (a ball screw, a nut slider 25 arranged on the ball screw), and a linear guide. The motor converts the rotational motion into linear motion through the transmission mechanism, thereby driving the slider 25 mounted thereon to move along the linear guide. Then the two clamping claws are driven to move relative to each other to achieve clamping or to move away from each other to achieve loosening. The left clamping arm 20 and the right clamping arm 21: The two are symmetrically designed and are respectively fixed on the two sliders 25 of the module to realize the opening and closing action. The end clamping claws 22 of the left clamping arm 20 and the right clamping arm 21 are designed with a clamping surface suitable for grasping the catheter, that is, a V-shaped groove. The opening and closing directions of the left clamping arm 20 and the right clamping arm 21 are opposite. When the module is driven, the two arms move toward or away from each other to complete the clamping or releasing action. Specifically, the output shaft of the motor is connected to the ball screw (that is, the transmission mechanism), and the transmission mechanism is driven to work by the rotation of the motor. The transmission mechanism is connected to the slider 25, converting the rotational motion of the motor into the linear motion of the slider 25. A clamping arm is fixed on the slider 25, and as the slider 25 moves, the clamping arm performs an opening and closing motion. The electric linear module 19 is a conventional means and is not described in detail.

[0038] More preferably, a horizontal support plate 11 is provided on one side of the frame 9, and the left clamping mechanism 3 of the two clamping mechanisms 3 is provided on the support plate 11, and the electric linear module 19 of the right clamping mechanism 3 is installed on the frame 9. A movable slide is installed on the support plate 11, and the left clamping mechanism 3 is installed on the movable slide. The movable slide includes a bottom plate, and a ball screw is rotatably installed on the bottom frame 12. A linear guide rail parallel to the ball screw is provided on the bottom frame 12 and on both sides of the ball screw. The slider 25 on the linear guide rail is connected with a nut slider 25, and the nut slider 25 is transmission-connected with the ball screw, and the ball screw is driven and rotated by a stepping motor 13 to drive the nut slider 25 thereon to move forward and backward along the linear guide rail; the electric linear module 19 of the left clamping mechanism 3 is installed on the nut slider 25, so that the clamping position of the left clamping mechanism 3 along the pipe to be welded can be adjusted.

[0039] Embodiment 2: A tensioning device 1 is also provided on the track pressure plate 16. The tensioning device 1 includes a fixed block 104 installed on the track pressure plate 16 and an adjusting bolt 105 provided on the fixed block 104. The fixed block 104 is connected to the track pressure plate 16 through a fastener. After the adjusting bolt 105 passes through the fixed block 104, a pressure block 102 is provided at the end that passes through. The adjusting bolt 105 is threadedly connected to the fixed block 104. The middle of the fixed block 104 is vertically connected to the adjusting bolt 105. A rolling bearing 101 is provided at each end of the fixed block 104, and both rolling bearings 101 are in contact with the mounting attachment plate 2 and act on the mounting attachment plate 2. The purpose of the tensioning device 1 is to better adjust the clearance of the sprocket once the track sprocket is worn during operation or the assembly conditions are poor, and to assist in adjusting the angle of the disc surface. Ensure that the flatness of the sprocket remains consistent during the rotation process.

[0040] Embodiment 3, the pressure plate is also in the form of an opening, and the opening dimensions are the same as the opening of the track type toothed disc 18. During operation, the pressure plate is fixed relative to the workbench 8. The track pressure plate 16 is used to limit the axial displacement of the track toothed disc, and is also the mounting plate of the planetary gear 26 and the stepper motor. The processing accuracy of the pressure plate affects the installation accuracy of the equipment. It is one of the important components of the welding equipment.

[0041] Embodiment 4: An operation panel 5 is also provided on the workbench 8. The operation panel 5 is a touch screen display, in which different programs are stored for workpiece clamping under different circumstances. The operation panel 5 is equipped with a master control switch, a running switch, an emergency stop button and other necessary components. When in use, the control panel is operated to realize the locking and loosening of the clamping mechanism 3, control the rotation welding of the welding gun 6, and the wire feeding of the wire feeder.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. Therefore, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope defined by the claims of the present invention.

Claims

1. Automatic welding machine for aviation ducts, including a workbench, characterized in that: The workbench is provided with a frame, and a vertical open-type track pressure plate is provided on the frame. A track for installing a track gear is provided on the opening periphery of the upper part of the track pressure plate, and the track gear is meshingly connected with the track, and the two together constitute a track-type gear plate; a planetary gear is rotatably installed on the lower part of the track pressure plate and on both sides of the track gear, and the two planetary gears are meshingly connected with the external teeth of the track gear; and the two planetary gears are driven to rotate by a servo motor; the internal teeth of the track gear are connected to a mounting attachment plate, and a welding gun is installed on the mounting attachment plate; A clamping mechanism for clamping and fixing the pipe to be welded is respectively arranged on both sides of the frame.

2. The aviation duct automatic welding machine according to claim 1 is characterized in that: After the conduit to be welded is clamped and fixed, the conduit to be welded passes through the middle hole of the track gear.

3. The aviation duct automatic welding machine according to claim 1 is characterized in that: The track gear adopts an open-loop gear.

4. The aviation duct automatic welding machine according to claim 1 is characterized in that: The servo motor is installed on the track pressure plate, and a driving gear is installed outside the output shaft of the servo motor, and the driving gear is respectively connected with the planetary gears on both sides by meshing transmission.

5. The aviation duct automatic welding machine according to claim 1 is characterized in that: The welding gun is fixed on the mounting attachment plate through a welding gun frame.

6. The aviation duct automatic welding machine according to claim 1, characterized in that: The two clamping mechanisms are a left clamping mechanism and a right clamping mechanism, wherein the left clamping mechanism and the right clamping mechanism both include an electric linear module and two clamping arms arranged on the electric linear module; wherein the left clamping arm is fixed on the first slider of the electric linear module, and the right clamping arm is fixed on the second slider of the electric linear module; a clamping claw is respectively arranged at the end of the left clamping arm and the right clamping arm, and the clamping claw adopts a block structure, and a V-shaped groove is arranged on the clamping surface of the block structure for facilitating clamping of the catheter.

7. The aviation duct automatic welding machine according to claim 6, characterized in that: A horizontal support plate is arranged on one side of the frame, the left clamping mechanism of the two clamping mechanisms is arranged on the support plate, and the electric linear module of the right clamping mechanism is installed on the frame.

8. The aviation duct automatic welding machine according to claim 7, characterized in that: A movable slide is installed on the support plate, and the left clamping mechanism is installed on the movable slide. The movable slide includes a base plate, and a ball screw is rotatably installed on the base frame. A linear guide rail parallel to the base frame and both sides of the ball screw are respectively arranged, and a nut slider is connected to the slider on the linear guide rail, and the nut slider is transmission-connected to the ball screw, and the ball screw is driven to rotate by a stepper motor to drive the nut slider thereon to move forward and backward along the linear guide rail; the electric linear module of the left clamping mechanism is installed on the nut slider to realize that the clamping position of the left clamping mechanism along the conduit to be welded is adjustable.

9. The aviation duct automatic welding machine according to claim 1, characterized in that: The track pressure plate is also provided with a tensioning device, which includes a fixed block installed on the track pressure plate and an adjusting bolt arranged on the fixed block. The fixed block is connected to the track pressure plate through a fastener. After the adjusting bolt passes through the fixed block, a pressure block is arranged on the protruding end. The adjusting bolt is threadedly connected to the fixed block, and the middle part of the fixed block is vertically connected to the adjusting bolt. A rolling bearing is arranged at each end of the fixed block, and the two rolling bearings are in contact with the mounting attachment plate to act on the mounting attachment plate.

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