An automated pipeline welding apparatus

Abstract

The application discloses an automatic pipeline welding device, which belongs to the field of welding devices and comprises a workbench, a conveying part is arranged on the upper end of the workbench in the transverse direction, a first feeding positioning mechanism and a second feeding positioning mechanism are arranged on the upper end of the workbench at intervals in the pipeline moving direction, a lifting seat is arranged above the first feeding positioning mechanism, the lifting seat moves in the vertical direction, a rotating disc is arranged at the lower end of the lifting seat, and a welding gun is arranged on the rotating disc; a joint mounting mechanism for placing a joint on a pipeline is arranged between the first feeding positioning mechanism and the second feeding positioning mechanism, and the automatic pipeline welding device can reduce the labor intensity of workers and improve the welding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding equipment, in particular to an automatic pipeline welding equipment. BACKGROUND

[0002] When producing electrical boxes, power supply cabinets and other equipment, the joints and other components are often fixed on the square tube and other pipelines by welding; the existing manual welding process is that the operator places the joint on the square tube, and then the operator holds the welding gun to weld the joint and the square tube; since the square tube is generally provided with multiple joints installed along its axial direction, the square tube also needs to be moved to change the welding position during manual welding.

[0003] In the above welding process, the operator needs to place the joint in the mounting hole on the pipeline, and then hold the welding gun to weld; if the joint is square, the weld quality can be basically ensured. If the joint is a cylindrical shaped special-shaped part, since the joint and the square tube joint are arc-shaped, the welding line of the welding gun is not a straight line during welding, and the operator's slight negligence can easily cause the weld to be skewed, overwelded, underwelded, and other undesirable phenomena, affecting the welding quality; especially during mass production, the above operation greatly increases the labor intensity of the operator and reduces the production efficiency. SUMMARY

[0004] The purpose of the present application is to solve the above problems, and to provide an automatic pipeline welding equipment that can reduce the labor intensity of the operator and improve the welding quality.

[0005] To achieve the above purpose, the technical solution adopted by the present application is: an automatic pipeline welding equipment, which comprises a workbench, a conveying part is provided on the upper end of the workbench in the transverse direction, a first feeding positioning mechanism and a second feeding positioning mechanism are provided on the upper end of the workbench in the direction of pipeline movement, a lifting seat is provided above the first feeding positioning mechanism, the lifting seat moves in the vertical direction, a turntable is provided at the lower end of the lifting seat, and a welding gun is provided on the turntable; a joint mounting mechanism is provided between the first feeding positioning mechanism and the second feeding positioning mechanism to place the joint on the pipeline, the joint mounting mechanism places the joint on the pipeline, then the joint moves together with the pipeline to the welding position, and the welding gun rotates around the joint to complete the welding.

[0006] Further, to drive the lifting seat to move and ensure the stability of the lifting seat, a support is provided on the upper end of the workbench, and a vertical driving mechanism for driving the lifting seat to move is provided on the support.

[0007] Further, in order to avoid the joint shaking during the welding process, causing the joint to be skewed after the welding is completed, the lifting seat is further provided with a positioning driving mechanism, the movable part of the positioning driving mechanism is connected with the pressing rod, the lower end of the pressing rod moves to the workbench through the through hole in the middle of the rotating disc, the pressing rod is coaxially arranged with the rotating disc, and the pressing rod fixes the joint on the square tube or other pipelines before the welding gun works, so as to avoid the joint shaking during the welding process.

[0008] Further, in order to automatically place the joint at the mounting hole on the pipeline, the joint mounting mechanism comprises a joint storage part and a joint mounting part above the pipeline, the joint enters the joint mounting part through the through hole between the joint storage part and the joint mounting part and is held by the temporary holding plate under the pushing of the transverse driving mechanism, the joint pushing part is arranged on the joint mounting part, the joint pushing part pushes the joint to open the temporary holding plate and move downward under the driving of the mounting driving mechanism, and the lower end of the joint mounting part is open, so that the joint falls from the lower end of the joint mounting part and is mounted on the pipeline when the mounting hole moves below the joint mounting part.

[0009] Further, in order to accurately mount the joint on the pipeline and avoid the rebound of the joint when falling after being mounted, the joint pushing part comprises a pressing part, the middle of the pressing part is provided with a clearance hole for the guide rod to pass through, the upper end of the guide rod is connected with a support, the support is connected with the mounting driving mechanism, the support is connected with the upper end of the pressing part through the telescopic rod, the guide rod is responsible for the joint falling along the fixed path, the pressing part is responsible for pushing the joint and preventing the rebound of the joint.

[0010] Further, in order to realize the downward movement of the guide rod before the pressing part, so as to realize the technical purpose of determining the path before pushing the joint, the inner wall of the joint mounting part is provided with an adsorption part, and the adsorption part is magnetically connected with the pressing part.

[0011] Further, in order to reduce the number of operators, the joints are arranged in the joint box in the transverse direction, the joint box is placed in the joint storage part during the joint mounting process, and the joint box is open on one side of the joint mounting part, and the joint box is provided with a through hole for the movable part of the transverse driving mechanism to pass through at the far end of the joint mounting part, so that a plurality of joint boxes can be prepared at one time, the joints can be mounted in the joint box during the welding process, the joint box is replaced, the purpose of placing a plurality of joints in the joint storage part is achieved, and the effect that one operator takes care of multiple devices is realized, and it is not necessary that one operator needs to guard one device.

[0012] Further, in order to improve the automation level, the workbench is provided with a feeding driving device, the joint storage part side wall is oppositely provided with a feeding hole and a discharging hole, the feeding driving device pushes the feeding plate to extend into the joint storage part from the feeding hole, so that the lowermost joint box in the joint storage part is moved out of the discharging hole, and when the feeding plate is moved out of the joint storage part, the lowermost joint box in the joint storage part is replaced.

[0013] Further, in order to realize the temporary retention of the joint and not to hinder the normal installation of the joint, the temporary retention plate is hinged to the inner wall of the joint installation part, and when the restriction of the joint pushing part is lost, the temporary retention plate is turned upward to reset.

[0014] Further, in order to make the position of the joint consistent in the joint installation part, the inner wall of the joint installation part is provided with a positioning plate on the side opposite to the joint storage part, and the contact surface of the positioning plate and the joint is arranged to be arc-shaped.

[0015] The beneficial effects of the present application are that the pipeline is placed on the conveying part, and then the second feeding positioning mechanism pushes the mounting hole on the pipeline to the joint installation station, at this time the joint is moved from the lower end of the joint installation part to the pipeline, so as to automatically complete the installation of the joint; then the point moves below the welding gun, after the rotation axis of the welding gun is coaxial with the joint, the welding gun moves downward, so that the welding gun is aligned with the connection between the pipeline and the joint, and the welding gun rotates around the joint, so as to weld the joint on the pipeline. Compared with manual holding of the welding gun, the welding is automatically completed through the automatic rotation and lifting of the welding gun, so as to reduce the labor intensity of the operator, and the welding gun rotation path is fixed, so as to ensure the stability of the weld and improve the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a top view structural schematic diagram of the present application.

[0017] Figure 2 It is an assembly schematic diagram of the lifting seat and the first feeding positioning mechanism.

[0018] Figure 3 It is a lifting seat installation structural schematic diagram.

[0019] Figure 4 It is a welding gun installation schematic diagram in the front view state.

[0020] Figure 5 It is a joint installation mechanism side view structural schematic diagram.

[0021] Figure 6 It is a joint installation part internal structure schematic diagram (joint pushing part working state).

[0022] Figure 7 It is a joint installation part internal structure schematic diagram (joint pushing part reset state).

[0023] Figure 8 Fig. 1 is a schematic view of the top structure of the joint storage part.

[0024] Figure 9 Fig. 2 is a schematic view of the structure of the first and second feeding positioning mechanisms.

[0025] The text annotations in the figure represent: 1, workbench; 2, conveying part; 3, pipeline; 4, first feeding positioning mechanism; 5, second feeding positioning mechanism; 6, lifting seat; 7, rotating disc; 8, welding gun; 9, joint; 10, joint mounting mechanism; 11, support; 12, vertical driving mechanism; 13, positioning driving mechanism; 14, pressing rod; 15, joint storage part; 16, joint mounting part; 17, horizontal driving mechanism; 18, through hole; 19, temporary holding plate; 20, mounting driving mechanism; 21, pressing part; 22, guide rod; 23, support; 24, telescopic rod; 25, adsorption part; 26, joint box; 27, positioning plate; 28, feeding driving device; 29, feeding plate; 30, reference detection unit; 31, sliding seat; 32, conveying wheel. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0027] Example 1: as shown in Figure 1 , 9 The structure of the present embodiment is as follows: it comprises a workbench 1, the workbench 1 is provided with a conveying part 2 along the horizontal direction at the upper end, the workbench 1 is provided with a first feeding positioning mechanism 4 and a second feeding positioning mechanism 5 at the upper end in the direction of the movement of the pipeline 3, the first feeding positioning mechanism 4 and the second feeding positioning mechanism 5 have the functions of clamping the pipeline and moving the pipeline, in the present embodiment, the first feeding positioning mechanism 4 and the second feeding positioning mechanism 5 each comprise sliding seats 31 arranged along the horizontal direction, the sliding seats 31 on both sides are arranged on both sides of the pipeline movement path, and the sliding seats 31 on both sides are provided with support parts for supporting the pipeline 3, the sliding seats 31 move along the width direction of the pipeline under the pushing of a cylinder or the like, the sliding seats 31 are provided with conveying wheels 32 arranged in the direction of the movement of the pipeline, at least one conveying wheel 32 is connected with the output shaft of a motor, and the motor is preferably a servo motor, so as to achieve the technical purpose of accurately controlling the movement distance of the pipeline, and when the sliding seats 31 on both sides move towards each other, the conveying wheels 32 are in contact with the side wall of the pipeline, so as to ensure the position of the pipeline on the Y axis and drive the pipeline to move.

[0028] As for the position determination of the pipeline X-axis direction, the reference detection unit 30 is arranged at the front end of the first feeding positioning mechanism 4 and the second feeding positioning mechanism 5 on the workbench 1 in the feeding direction, the reference detection unit 30 adopts a sensor capable of sensing objects, such as a proximity switch, a photoelectric sensor, etc., the reference detection unit 30 is connected with a control unit for controlling the work of the first feeding positioning mechanism 4 and the second feeding positioning mechanism 5. When the end face of the pipeline 3 moves to the reference detection unit 30, the reference detection unit 30 sends a signal to the control unit, the control unit can adopt PLC control, after analyzing the signal of the reference detection unit 30, the control unit sends a control instruction to the motor on the first feeding positioning mechanism 4 and the second feeding positioning mechanism 5 to stop the work of the conveying wheel 32, at this time, the position of the pipeline 3 on the X-axis is determined, since the positions of the pipeline and the joint in the same batch are fixed values, the welding point of the joint combined with the pipeline can be determined to move to the specified position.

[0029] The lifting seat 6 is arranged above the first feeding positioning mechanism 4, the lifting seat 6 moves vertically, the lower end of the lifting seat 6 is provided with the turntable 7, the turntable 7 can be driven by a motor or a hydraulic turntable, in the embodiment, the turntable 7 is fixedly connected with a rotating disc, the rotating disc is rotatably connected with the lifting seat 6, a circle of transmission gears is arranged on the outer wall of the rotating disc, the transmission gears are engaged with a driving gear, the driving gear is arranged on the output shaft of a rotating servo motor, the rotating servo motor is installed on the lifting seat 6; the welding gun 8 is arranged at the lower end of the turntable 7; the joint mounting mechanism 10 is arranged between the first feeding positioning mechanism 4 and the second feeding positioning mechanism 5 to place the joint 9 on the pipeline 3.

[0030] Specific working process: the operator places the pipeline 3 on the conveying part 2, then pushes the pipeline 3 into the second feeding positioning mechanism 5, the second feeding positioning mechanism 5 pushes the pipeline 3 to move forward, when reaching the specified position, the pipeline 3 stops moving, the joint mounting mechanism 10 mounts the joint on the mounting hole of the pipeline 3, then the pipeline 3 continues to move forward, during the movement, the pipeline is stopped and moved according to the number and position of the mounting holes. When the pipeline 3 with the joint moves to the welding position, the welding gun 8 moves downward with the lifting seat 6, so that the welding gun 8 is aligned with the jointing position of the pipeline 3 and the joint 9, and the welding gun 8 rotates around the joint 9 to weld the joint 16 on the pipeline.

[0031] After the welding is completed, the welding gun 8 rises and rotates to reset, the original point sensor can be arranged at the welding end point, so that the welding gun can automatically rotate to the starting welding point, meanwhile, the over-limit switch, etc. can also be arranged, the first feeding positioning mechanism 4 and the second feeding positioning mechanism 5 drive the pipeline to move forward, to continue the welding at the next station.

[0032] Embodiment 2: as Figures 2-4As shown, other structures and working processes of this embodiment can refer to Example 1, but in this embodiment, a bracket 11 is provided on the upper end of the workbench 1, and a vertical driving mechanism 12 for driving the lifting seat 6 to move is provided on the bracket 11. The vertical driving mechanism 12 can be driven by a cylinder or the like. In this embodiment, the vertical driving mechanism 12 includes a vertical screw rod and a servo motor that drives the vertical screw rod to rotate. The vertical screw rod is threadedly connected to the lifting seat 6, and the lifting seat 6 is connected to the vertical guide column on the bracket 11. The lifting seat 6 is driven to move vertically by the rotation of the vertical screw rod.

[0033] At the same time, the turntable and the rotating disk are both annular structures, with a through hole in the middle. A positioning drive mechanism 13 is also provided on the lifting seat 6. The positioning drive mechanism 13 can adopt a cylinder, an electric push rod, etc. The movable part of the positioning drive mechanism 13 is connected to the pressure rod 14, and the pressure rod 14 is coaxially arranged with the turntable 7. The lower end of the pressure rod 14 passes through the through hole in the middle of the turntable 7 and moves toward the workbench 1. The pressure rod 14 is coaxially arranged with the turntable 7.

[0034] Specific working process: before welding, the pressure rod 14 moves downward to fix the joint on the pipeline 3, and then the welding gun 8 drops to the specified position to start working. After welding is completed, the pressure rod 14 rises and resets.

[0035] Example 3: Figure 5 As shown, other structures and working processes of this embodiment can refer to embodiment 1 or 2, but in this embodiment, the joint installation mechanism 10 includes a joint storage portion 15 and a joint installation portion 16 located above the pipeline 3. The joint 9 is driven by a transverse driving mechanism 17. The transverse driving mechanism 17 can adopt a cylinder, etc. In this embodiment, the transverse driving mechanism 17 includes a transverse screw rod, one end of the transverse screw rod is connected to the output shaft of the servo motor outside the joint storage portion 15, and the other end of the transverse screw rod is threadedly connected to the push plate. The joint storage portion 15 is provided with A through hole is provided, and the through hole on the push plate and the joint storage portion 15 is key-connected. The joint 9 passes through the through hole 18 between the joint storage portion 15 and the joint mounting portion 16 and enters the joint mounting portion 16 and is held by the temporary retention plate 19. The temporary retention plate 19 is movable, for example, it can be moved laterally under the push of a cylinder, etc. In this embodiment, the temporary retention plate 19 is hinged to the inner wall of the joint mounting portion 16 by a torsion spring. When the restriction of the joint pushing portion is lost, the temporary retention plate 19 is rotated upward and reset under the action of the torsion spring. After resetting, the upper end surface of the temporary retention plate 19 is horizontal

[0036] The joint mounting portion 16 is provided with a joint pushing portion, which pushes the joint 9 to open the temporary plate 19 and move downward under the drive of the mounting drive mechanism 20. The lower end of the joint mounting portion 16 is open, and the mounting drive mechanism 20 can adopt a cylinder, an electric push rod, etc.

[0037] A positioning plate 27 is provided on the inner wall of the connector installation portion on the side opposite to the connector storage portion 15. A detector such as a touch switch can be provided at the positioning plate 27. When the connector is pushed to contact the positioning plate 27, the detector sends a signal to the control unit, and the control unit controls the installation drive mechanism 20 to operate. The contact surface between the positioning plate 27 and the connector 9 is set to an arc shape to adapt to the outer wall of the connector 9.

[0038] Specific working process: the horizontal driving mechanism 17 drives the joint 9 to move toward the side of the joint installation part 16 until it moves above the temporary plate 19, and then the movable part of the installation driving mechanism 20 moves downward to push the joint to open the temporary plate 19 and move to the pipeline 3.

[0039] Example 4: Figures 6-7 As shown, other structures and working processes of this embodiment can refer to Example 3, but in this embodiment, the joint pushing part includes a pressing part 21, and a clearance hole for the guide rod 22 to pass through is provided in the middle of the pressing part 21, the upper end of the guide rod 22 is connected to the support 23, and the lower end of the guide rod 22 is provided with a chamfer, the support 23 is connected to the installation drive mechanism 20, and the support 23 is connected to the upper end of the pressing part 21 through a telescopic rod 24, and the outer walls of the pressing part 21 and the support 23 do not exceed the joint 9.

[0040] An adsorption portion 25 is provided on the inner wall of the joint mounting portion 16 . The adsorption portion 25 can be a magnet. The adsorption portion 25 is magnetically connected to the pressing portion 21 . The position of the adsorption portion 25 is staggered with the support 23 .

[0041] Specific working process: Under normal conditions, the pressing portion 21 and the adsorption portion 25 are adsorbed together, and the telescopic rod 24 is in an elongated state. When the joint is moved to the specified position, the installation drive mechanism 20 pushes the support 23 to move downward, thereby driving the guide rod 22 to move downward. During this process, the pressing portion 21 remains stationary, and the telescopic rod 24 is shortened, so that the guide rod 22 passes through the joint 9 first. When the telescopic rod 24 is shortened to the minimum length, the pressing portion 21 moves downward with the support 23, so that the pressing portion 21 contacts the upper end surface of the joint, thereby pushing the joint to move downward. At this time, the guide rod 22 extends out of the joint installation portion 16 and moves toward the pipeline 3 to avoid the joint being misaligned with the installation hole due to rebound after being installed on the pipeline.

[0042] Example 5: Figure 5 、 8 As shown, the other structures and working processes of this embodiment can refer to Example 3, but in this embodiment, the joints 9 are arranged in a horizontal arrangement in the joint box 26. During the installation of the joints 9, the joint box 26 is vertically stacked in the joint storage portion 15, and the joint box 26 is open on one side of the joint installation portion 16. The joint box 26 is provided with a through hole at the far end of the joint installation portion 16 for the movable portion of the horizontal drive mechanism 17 to pass through.

[0043] The workbench 1 is provided with a feeding driving device 28, which can be a cylinder or an electric push rod. The side wall of the joint storage part 15 is oppositely provided with a feeding hole and a discharging hole. The feeding driving device pushes the feeding plate to extend into the joint storage part 15 from the feeding hole, so that the lowermost joint box 26 in the joint storage part 15 is moved out of the discharging hole.

[0044] Specific working process: the operator places the joint 9 in the joint box 26. In order to facilitate placement, the upper part of the joint box 26 can be opened. Then the operator places the joint box 26 in the joint storage part 15 along the vertical direction. When the joint 9 in the lowermost joint box 26 is used up, the feeding driving device 28 pushes the feeding plate to extend into the joint storage part 15 from the feeding hole. The width of the feeding plate is greater than the inner width of the joint storage part 15, so as to push the lowermost joint box 26 to move out of the joint storage part 15 from the discharging hole. A guide plate can be arranged outside the joint storage part 15, so that the dropped joint box 26 slides to the collecting device. When the feeding plate moves out of the joint storage part 15, the lowermost joint box 26 in the joint storage part 15 falls into position to continue production. During the replacement of the joint box 26, the movable part of the transverse driving mechanism 17 moves out of the joint storage part 15.

[0045] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0046] The principles and embodiments of the application are described in this document using specific examples. The above examples are only used to help understand the method and core idea of the application. The above description is only the preferred embodiment of the application. It should be noted that due to the limited nature of the language expression, there are infinite specific structures. For ordinary skilled persons in the technical field, without departing from the principles of the application, some improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner. These improvements, refinements, changes or combinations, or the application of the concept and technical solution of the application to other fields without improvement, shall be regarded as the protection scope of the application.

Claims

1. An automated pipeline welding apparatus comprising a worktable (1) having a transfer section (2) provided at an upper end thereof in a transverse direction, characterized in that, The first feeding positioning mechanism (4) and the second feeding positioning mechanism (5) are arranged on the workbench (1) at intervals in the moving direction of the pipeline (3), a lifting seat (6) is arranged above the first feeding positioning mechanism (4), the lifting seat (6) moves vertically, a rotating disc (7) is arranged at the lower end of the lifting seat (6), and a welding gun (8) is arranged on the rotating disc (7); a joint mounting mechanism (10) for placing a joint (9) on the pipeline (3) is arranged between the first feeding positioning mechanism (4) and the second feeding positioning mechanism (5), the joint mounting mechanism (10) comprises a joint storage part (15) and a joint mounting part (16) arranged above the pipeline (3), the joint (9) is pushed by a transverse driving mechanism (17), passes through a through hole (18) between the joint storage part (15) and the joint mounting part (16), enters the joint mounting part (16) and is held by a temporary holding plate (19), a joint pushing part is arranged on the joint mounting part (16), the joint pushing part pushes the joint (9) to push away the temporary holding plate (19) and move downward under the drive of an installation driving mechanism (20), and the lower end of the joint mounting part (16) is open.

2. An automated pipeline welding apparatus according to claim 1, wherein, A support (11) is arranged at the upper end of the workbench (1), and a vertical driving mechanism (12) for driving the lifting seat (6) to move is arranged on the support (11).

3. An automated pipeline welding apparatus as defined in claim 2, wherein, A positioning driving mechanism (13) is further arranged on the lifting seat (6), a movable part of the positioning driving mechanism (13) is connected with a pressing rod (14), the lower end of the pressing rod (14) moves to the workbench (1) through a through hole in the middle of the rotating disc (7), and the pressing rod (14) is coaxially arranged with the rotating disc (7).

4. An automated pipeline welding apparatus as defined in claim 1, wherein, The joint pushing part comprises a pressing part (21), a clearance hole for a guide rod (22) to pass through is arranged in the middle of the pressing part (21), the upper end of the guide rod (22) is connected with a support (23), the support (23) is connected with the installation driving mechanism (20), and the support (23) is connected with the upper end of the pressing part (21) through an extension rod (24).

5. An automated pipeline welding apparatus as defined in claim 4, wherein, A suction part (25) is arranged on the inner wall of the joint mounting part (16), and the suction part (25) is magnetically connected with the pressing part (21).

6. An automated pipeline welding apparatus as defined in claim 1, wherein, The joints (9) are arranged in the joint box (26) in transverse arrangement, during the installation of the joints (9), the joint box (26) is placed in the joint storage part (15), and the joint box (26) is open on one side of the joint mounting part (16), and a through hole for the movable part of the transverse driving mechanism (17) to pass through is arranged at the distal end of the joint mounting part (16).

7. An automated pipeline welding apparatus as defined in claim 6, wherein, A feeding driving device (28) is arranged on the workbench (1), a feeding hole and a discharging hole are oppositely arranged on the side wall of the joint storage part (15), the feeding driving device pushes a feeding plate to extend into the joint storage part (15) from the feeding hole, and the lowermost joint box (26) in the joint storage part (15) is moved out of the discharging hole.

8. An automated pipeline welding apparatus according to any one of claims 1 to 7, wherein, The temporary holding plate (19) is hinged to the inner wall of the joint mounting part (16), and when the restriction of the joint pushing part is lost, the temporary holding plate (19) rotates upward to reset.

9. An automated pipeline welding apparatus according to any one of claims 1 to 7, wherein, The inner wall of the joint mounting part is provided with a positioning plate (27) on the side opposite to the joint storage part (15), and the contact surface of the positioning plate (27) and the joint (9) is provided as an arc.

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