Automatic welding device for steel cylinder

Abstract

An automatic welding device for a steel cylinder comprises a lower support arranged on one side of a spiral drum machine, the upper portion of the lower support is fixedly connected with an upper platform, the upper platform is provided with a fine adjustment mechanism, the fine adjustment mechanism comprises a moving plate, and a welding robot used for welding a welding seam of the steel cylinder is installed on the moving plate. The gravity center of the upper platform is located over the lower support. A heavy portal frame submerged arc welding machine in the prior art is omitted, the robot is used for automatic welding, meanwhile, supporting of the upper platform and the lower support is matched, automatic welding is achieved, welding efficiency and quality are improved, and wide application prospects and practical value are achieved in the fields of steel cylinder manufacturing, pressure container manufacturing and the like.

Description

Technical Field

[0001] The utility model relates to a welding device, in particular to an automatic welding device for a steel cylinder. Background Art

[0002] The current PCCP straight tube manufacturing tooling consists of three main components: a reel mechanism, a plate feed mechanism, and a gantry submerged arc welding mechanism. These three components operate synchronously: the plate feed mechanism transports the steel plates, which are then wound into a spiral overlap on the reel mechanism's drum. The submerged arc welder is manually controlled to align the overlap seam for welding. The steel plates are 1.5 mm thick. Due to the bulky gantry submerged arc welding structure, imprecise manual synchronization, and inaccurate weld alignment, weld quality is poor, resulting in a high rate of rejects during initial commissioning. This is a shortcoming of the existing technology. Utility Model Content

[0003] The purpose of the present invention is to solve the problems raised in the above background technology, and then proposes an automatic welding device for steel cylinders.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an automatic steel cylinder welding device, comprising a lower bracket arranged on one side of a spiral winding machine, the upper part of the lower bracket is fixedly connected to an upper platform, the upper platform is provided with a fine-tuning mechanism, the fine-tuning mechanism includes a movable plate, a welding robot for welding the steel cylinder weld is installed on the movable plate, and the center of gravity of the upper platform is located directly above the lower bracket.

[0005] A further improvement of the present invention is that the lower bracket includes a bottom plate, a support assembly is vertically arranged on the bottom plate, and the top of the support assembly is fixedly connected to the upper platform.

[0006] A further improvement of the present invention is that the upper platform includes an operating table, and guardrails are installed around the operating table.

[0007] A further improvement of the present invention is that a climbing ladder is provided between the base plate and the operating platform.

[0008] A further improvement of the present invention is that the support assembly adopts a group of vertically arranged support columns.

[0009] A further improvement of the present invention is that the support assembly adopts a support plate with an "L"-shaped cross-section, and the lower end of the support plate is fixed to the base plate through a mounting plate.

[0010] A further improvement of the present invention is that the support plate and the mounting plate are fixed via a lower reinforcing plate, and the support plate and the operating table are fixed via an upper reinforcing plate.

[0011] A further improvement of the present invention is that the fine-tuning mechanism includes a motor, a lead screw, a nut and a slider, the motor is fixed to the operating table, the output shaft of the motor is connected to the lead screw, the lead screw is equipped with a nut, and the upper part of the nut is fixed to the movable plate.

[0012] A further improvement of the present invention is that sliding rods are respectively provided on both sides of the lead screw, and sliders are slidably provided on the sliding rods, and the sliders are fixed to the movable plate.

[0013] The beneficial effects of the utility model are as follows: the utility model eliminates the bulky gantry submerged arc welding machine in the prior art and uses robot automatic welding instead. At the same time, with the support of the upper platform and the lower bracket, automatic welding is realized, the efficiency and quality of welding are improved, and the utility model has broad application prospects and practical value in the fields of steel cylinder manufacturing, pressure vessel manufacturing, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a structural diagram of Example 1;

[0016] Figure 3 It is a structural diagram of the fine-tuning mechanism;

[0017] Figure 4 This is a schematic structural diagram of the upper platform and lower bracket of Example 2;

[0018] Figure 5 This is a structural diagram of the support plate of Example 2.

[0019] In the figure, 1 is a spiral winding machine, 2 is a lower bracket, 21 is a base plate, 22 is a support assembly, 221 is a support plate, 3 is an upper platform, 31 is an operating table, 32 is a guardrail, 4 is a fine-tuning mechanism, 41 is a moving plate, 42 is an electric motor, 43 is a slide rod, 44 is a lead screw, 5 is a welding robot, 6 is a mounting plate, 7 is an upper reinforcing plate, 8 is a lower reinforcing plate, 9 is a plate feeding mechanism, and 10 is a shearing machine. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The present invention is further described in conjunction with the drawings and embodiments:

[0021] Example 1: Figure 1-3 As shown, an automatic steel cylinder welding device includes a lower bracket 2 arranged on one side of a spiral winding machine 1, the upper part of the lower bracket 2 is fixedly connected to an upper platform 3, the upper platform 3 is provided with a fine-tuning mechanism 4, and the fine-tuning mechanism 4 includes a movable plate 41, on which a welding robot 5 for welding the steel cylinder weld is installed.

[0022] The lower support 2 provides a solid foundation for the entire welding process. It comprises a base plate 21, on which a support assembly 22 is vertically mounted. The top of the support assembly 22 is fixedly connected to the upper platform 3. The base plate 21 serves as the foundation of the entire support, providing a stable support. The support assembly 22 is vertically mounted on the base plate 21, with its top fixedly connected to the upper platform 3, forming the primary load-bearing structure of the entire device. Specifically, the support assembly 22 utilizes a set of vertically mounted support columns, which are simple in structure and easy to manufacture and secure.

[0023] The upper platform 3 is used to support the robot; the upper platform 3 includes an operating table 31, which is surrounded by guardrails 32. The operating table 31 provides a stable working surface, while the guardrails 32 effectively prevent personal injury caused by accidental collision with the welding robot 5 during welding.

[0024] The setting of the fine-tuning mechanism 4 enables the carrying robot to make precise adjustments according to changes in the welding position, thereby ensuring the accuracy of welding.

[0025] Since the welding robot 5 is located at one end of the operating table 31, the center of gravity of the entire lower bracket 2 is offset, which easily leads to an unstable platform. The utility model can adopt methods such as adding counterweights to make the center of gravity of the upper platform 3 directly above the lower bracket 2, thereby ensuring the stability of the entire device.

[0026] The present invention eliminates the bulky gantry submerged arc welding machine used in the prior art and instead uses a robot for automatic welding. Combined with the support of the upper platform 3 and the lower bracket 2, this achieves automated welding, improving welding efficiency and quality. Furthermore, a weld seam tracker can be used to guide the robot to align with the spiral weld seam, and precise welding can be achieved by combining rotational speed information.

[0027] In order to facilitate operators to get on and off the device, a climbing ladder is provided between the base plate 21 and the operating platform 31 .

[0028] Furthermore, the fine-tuning mechanism 4 includes a motor 42, a lead screw 44, a nut and a slider. The motor 42 is fixed to the operating table 31, and the output shaft of the motor 42 is connected to the lead screw 44. The lead screw 44 is equipped with a nut, and the upper part of the nut is fixed to the movable plate 41.

[0029] Furthermore, slide bars 43 are respectively provided on both sides of the lead screw 44 , and sliders are slidably provided on the slide bars 43 , and the sliders are fixed to the movable plate 41 .

[0030] When the motor 42 is working, it drives the lead screw 44 to rotate, thereby driving the nut to move on the lead screw 44. Since the upper part of the nut is fixedly connected to the movable plate 41, the movable plate 41 will move with the movement of the nut, and the movable plate 41 will drive the welding robot 5 to move. This design realizes the precise adjustment of the welding position, improving the accuracy and efficiency of welding.

[0031] Example 2: Figure 4-5 As shown, unlike the first embodiment, the support assembly 22 utilizes a support plate 221 with an L-shaped cross-section. The lower end of the support plate 221 is secured to the base plate 21 via a mounting plate 6. The support plate 221 is secured to the mounting plate 6 via a lower reinforcing plate 8, and the support plate 221 is secured to the operating table 31 via an upper reinforcing plate 7. The support plate 221, mounting plate 6, and base plate 21 of the present invention form a more stable support structure. Furthermore, the provision of the lower reinforcing plate 8 and upper reinforcing plate 7 further enhances the stability and load-bearing capacity of the entire device.

[0032] During welding, the weld seam's starting point needs to be roughly aligned manually. Then, pressing the start button causes the spiral drum machine 1 to begin rotating, and the plate feeder 9 and shearing machine 10 also move synchronously. The plate feeder 9 carries the welding robot forward along the slide rail 10 until it reaches the spiral drum machine, where the welding robot 5 begins welding the steel cylinder's weld seam. During the welding process, a weld seam tracker guides the robot's automatic welding, achieving automated and precise welding.

[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for steel cylinders, characterized in that: It includes a lower bracket arranged on one side of the spiral winding machine, the upper part of the lower bracket is fixedly connected to an upper platform, the upper platform is provided with a fine-tuning mechanism, the fine-tuning mechanism includes a movable plate, and a welding robot for welding the steel cylinder weld is installed on the movable plate. The center of gravity of the upper platform is directly above the lower bracket.

2. The automatic steel cylinder welding device according to claim 1, characterized in that: The lower bracket includes a bottom plate, a support assembly is vertically arranged on the bottom plate, and the top of the support assembly is fixedly connected to the upper platform.

3. The automatic steel cylinder welding device according to claim 2, characterized in that: The upper platform includes an operating table, and guardrails are installed around the operating table.

4. The automatic steel cylinder welding device according to claim 3, characterized in that: A climbing ladder is provided between the base plate and the operating platform.

5. The automatic steel cylinder welding device according to claim 2, characterized in that: The support assembly adopts a group of vertically arranged support columns.

6. The automatic steel cylinder welding device according to claim 3, characterized in that: The support assembly adopts a support plate with an "L"-shaped cross-section, and the lower end of the support plate is fixed to the base plate through a mounting plate.

7. The automatic steel cylinder welding device according to claim 6, characterized in that: The support plate and the mounting plate are fixed via a lower reinforcing plate, and the support plate and the operating table are fixed via an upper reinforcing plate.

8. The automatic steel cylinder welding device according to claim 1, characterized in that: The fine-tuning mechanism includes a motor, a lead screw, a nut and a slider. The motor is fixed to the operating table, the output shaft of the motor is connected to the lead screw, the lead screw is equipped with a nut, and the upper part of the nut is fixed to the movable plate.

9. The automatic steel cylinder welding device according to claim 8, characterized in that: Slide rods are respectively provided on both sides of the lead screw, and sliders are slidably provided on the slide rods, and the sliders are fixed to the movable plate.

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