Pipeline flange automatic welding assembly line

Abstract

The utility model belongs to the field of welding equipment, and particularly relates to a pipeline flange automatic welding assembly line which comprises a conveying belt, a mechanical arm and a welding device, the welding device comprises an automatic clamping mechanism and a welding head adjusting mechanism, the automatic clamping mechanism comprises a base, and a first rotating motor is installed on the base. A rotary table is connected to the upper portion of the first rotating motor, two clamping units used for clamping a pipeline are connected to the upper portion of the rotary table, two flange clamping structures used for clamping a flange are further connected to the upper portion of the rotary table, and each clamping unit comprises a first electric push rod and a clamping block; the flange clamping structure comprises a clamping unit and a linear guide rail unit driving the clamping unit to move up and down. The linear guide rail unit comprises a servo motor, a lead screw, a sliding rail, a sliding table and a sliding plate. The automatic clamping mechanism comprises the first electric push rod controlled by the PLC, the first electric push rod pushes the clamping block to clamp the pipeline or the flange, and automatic clamping is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment, and relates to the welding between pipes and flanges, and particularly to an automatic welding production line for pipe flanges. Background Technology

[0002] For example, application CN201710898880.2 discloses a welding production line, which generally includes a conveyor belt, a transfer device, and a welding device. The welding device in this application is used for welding steel plates. Application CN202311467884.7 discloses a welding device specifically for welding pipe flanges. In this device, the workpiece clamping process requires manual operation. After clamping, a person holds the welding torch, and then the plate rotates, causing the workpiece to rotate for welding. A support mechanism or robotic arm can be used to replace the manual welding torch. Since the clamping work still requires manual operation, improvements are needed. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides an automated welding production line for pipe flanges that automatically clamps the workpiece during the welding process.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatic welding production line for pipe flanges, comprising a conveyor belt, a robotic arm, and a welding device. The welding device includes an automatic clamping mechanism and a welding head adjustment mechanism. The automatic clamping mechanism includes a base, on which a first rotary motor is mounted. A turntable is connected above the first rotary motor. Two clamping units for clamping pipes are connected above the turntable, and two flange clamping structures for clamping flanges are also connected. Each clamping unit includes a first electric push rod and a clamping block. Each flange clamping structure includes a clamping unit and a linear guide rail unit that drives the clamping unit to move up and down. The linear guide rail unit includes a servo motor, a lead screw, a slide rail, a slide table, and a sliding plate.

[0005] Preferably, the welding head adjustment mechanism includes a base, a second electric push rod rotatably connected above the base, a support arm connected to the top of the second electric push rod, a T-shaped seat connected to the end of the support arm away from the second electric push rod, a second rotating motor connected to the T-shaped seat, and a welding head connected to the second rotating motor.

[0006] Preferably, two support platforms for supporting the flange are connected above the turntable.

[0007] Preferably, the clamping block has a circular arc cross-section.

[0008] Preferably, the distance between the two support platforms is greater than the diameter of the clamping block.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] The automatic clamping mechanism of this utility model includes a first electric push rod controlled by a PLC controller. The first electric push rod pushes the clamping block to clamp the pipe or flange, thereby achieving automatic clamping.

[0011] The automatic clamping mechanism of this utility model includes a flange clamping structure, which includes a clamping unit and a linear guide rail unit that drives the clamping unit to move. After clamping the flange, it can drive the flange to move up and down, thereby adjusting the position of the flange in the vertical direction.

[0012] In this invention, the pipe is placed on a turntable and the flange is placed on a support platform. The two are not on the same plane, which facilitates the operation of the clamping unit and the flange clamping structure. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural schematic diagram of an automated welding production line for pipe flanges.

[0015] Figure 2 This is a schematic diagram of the automatic clamping mechanism;

[0016] Figure 3 This is a schematic diagram of the welding head adjustment mechanism.

[0017] In the above figures, 1. Conveyor belt; 2. Robotic arm; 3. Pipeline; 4. Flange; 5. Automatic clamping mechanism; 51. Base; 52. First rotary motor; 53. Turntable; 54. Clamping unit; 541. First electric push rod; 542. Clamping block; 55. Flange clamping structure; 551. Servo motor; 552. Slide table; 553. Lead screw; 554. Slide plate; 555. Slide rail; 56. Support platform; 6. Welding head adjustment mechanism; 61. Base; 62. Second electric push rod; 63. Support arm; 64. T-shaped seat; 65. Second rotary motor; 66. Welding head. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, an automated pipe flange welding production line includes a conveyor belt 1, a robotic arm 2, and a welding device. The robotic arm 2 is used to grab pipes 3 and flanges 4 from the conveyor belt 1 and place them at the welding device. After welding, the robotic arm grabs them again and places them on the unloading conveyor belt (not shown in the figure). To automatically clamp the pipes 3 and flanges 4 placed down by the robotic arm 2, the welding device of this invention includes an automatic clamping mechanism 5 and a welding head adjustment mechanism 6. The automatic clamping mechanism 5 includes a base 51, on which a first rotary motor 52 is mounted. A turntable 53 is connected above the first rotary motor 52. Two clamping units 54 for clamping pipes 3 are connected above the turntable 53, and two flange clamping structures 55 for clamping flanges 4 are also connected. The clamping unit 54 includes a first electric push rod 541 and a clamping block 542. The clamping unit 54 is pushed by the first electric push rod 541. Block 542 clamps the pipe. The flange clamping structure 55 includes a clamping unit 54 and a linear guide unit that drives the clamping unit 54 to move up and down. The linear guide unit includes a servo motor 551, a lead screw 553, a slide rail 555, a slide table 552, and a slide plate 554. Linear guide units are commonly found in machine tools. Generally, the servo motor 551 drives the lead screw 553 to rotate. There is a threaded connection between the lead screw 553 and the slide plate 554, allowing the slide plate 554 to move vertically along the slide rail 555. The slide plate 554 is connected to a clamping unit 54 for clamping the flange 4. In addition, the welding device also includes a position sensor for finding the workpiece position and a PLC controller for processing information. Under the control of the PLC controller, the various components work together to automatically clamp and release the pipe 3 and the flange 4. The setting of position sensors and PLC controllers is common in machine tools and will not be described in detail here.

[0021] Specifically, the two clamping units 54 connected to the turntable 53 are used to clamp the bottom of the vertical pipe 3, while the clamping unit 54 in the flange clamping structure 55 can move in the vertical direction, so after clamping the flange 4, it can drive the flange 4 to move up and down.

[0022] Furthermore, the welding head adjustment mechanism 6 includes a base 61, a second electric push rod 62 rotatably connected above the base 61, a motor that drives the second electric push rod 62 to rotate on the side of the base 61, a support arm 63 connected to the top of the second electric push rod 62, the second electric push rod 62 can drive the support arm 63 to move up and down, a T-shaped seat 64 connected to the end of the support arm 63 away from the second electric push rod 62, a second rotating motor 65 connected to the T-shaped seat 64, and a welding head 66 connected to the second rotating motor 65. The welding head 66 is used to weld the connection between the pipe 3 and the flange 4.

[0023] Furthermore, two support platforms 56 are connected above the turntable 53 for supporting the flange 4. When placing the flange 4, the robot arm 2 places the flange 4 on the two support platforms 56.

[0024] Furthermore, the clamping block 542 used to clamp the pipe 3 and flange 4 has an arc-shaped cross-section, and this arc is smaller than a semicircle. In addition, the clamping block 542 in the clamping unit 54 connected to the turntable 53 and the clamping block 542 in the flange clamping structure 55 have different radii.

[0025] Furthermore, the distance between the two support platforms 56 is greater than the diameter of the clamping block 542, or more specifically, greater than the diameter of the clamping block 542 in the clamping unit 54 connected to the turntable 53. The robot arm 2 places the pipe 3 between the two support platforms 56, and the bottom of the pipe 3 contacts the turntable 53.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automated welding production line for pipe flanges, comprising a conveyor belt, a robotic arm, and a welding device, characterized in that, The welding device includes an automatic clamping mechanism and a welding head adjustment mechanism. The automatic clamping mechanism includes a base, on which a first rotary motor is mounted. A turntable is connected above the first rotary motor. Two clamping units for clamping pipes are connected above the turntable, and two flange clamping structures for clamping flanges are also connected. Each clamping unit includes a first electric push rod and a clamping block. Each flange clamping structure includes a clamping unit and a linear guide rail unit that drives the clamping unit to move up and down. The linear guide rail unit includes a servo motor, a lead screw, a slide rail, a slide table, and a sliding plate.

2. The automatic welding production line for pipe flanges according to claim 1, characterized in that, The welding head adjustment mechanism includes a base, a second electric push rod rotatably connected above the base, a support arm connected to the top of the second electric push rod, a T-shaped seat connected to the end of the support arm away from the second electric push rod, a second rotating motor connected to the T-shaped seat, and a welding head connected to the second rotating motor.

3. The automatic welding production line for pipe flanges according to claim 1, characterized in that, Two support platforms for lifting the flange are connected above the turntable.

4. The automatic welding production line for pipe flanges according to claim 3, characterized in that, The cross-section of the clamping block is arc-shaped.

5. The automatic welding production line for pipe flanges according to claim 4, characterized in that, The distance between the two support platforms is greater than the diameter of the clamping block.

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