Rotary synchronous reshaping tank cylinder spot welding assembly device

Abstract

The present application belongs to the technical field of storage tank assembly, and particularly relates to a rotary synchronous shaping storage tank cylinder spot welding assembly device, which comprises a press roller lifting bracket, a press roller, a press roller positioning moving mechanism and a cylinder supporting mechanism. The cylinder supporting mechanism can drive the cylinder thereon to rotate. The cylinder supporting mechanism is provided with multiple groups of linear arrangement. The press roller positioning moving mechanism and multiple press roller lifting brackets are symmetrically arranged on both sides of the multiple groups of cylinder supporting mechanisms. The press roller positioning moving mechanism can send the receiving press roller and the inserting press roller into the cylinder from both ends to butt together to form the press roller. The press roller positioning moving mechanism can also press the press roller against the bottom of the inner surface of the cylinder. The press roller can rotate. In the present application, the cylinder is butt-jointed and then synchronous roundness correction is performed, so that the misalignment of the butt-jointed part of the two cylinder sections can be completely eliminated. The best matching angle does not need to be manually searched, the welding efficiency is improved, all welding parameter requirements can be met by one-time clamping, and the product quality is greatly improved.

Description

Technical Field

[0001] This invention relates to a rotary synchronous shaping tank body spot welding assembly device, belonging to the field of tank assembly technology. Background Technology

[0002] Circumferential welding is used for welding the shells of various towers and storage tanks. The weld formed is a closed ring. Circumferential welding is mainly divided into vertical circumferential welding and horizontal circumferential welding. For welding large, long shells, horizontal circumferential welding is generally used. That is, two sets of shells are horizontally butted together, and then circumferential welding is performed using welding equipment. Its advantages are low difficulty, no need for high-altitude hoisting, and high safety; however, because the shell is in a horizontal state, it is prone to bending deformation due to its own weight, making it difficult to align the joints and ensuring the degree of alignment, thus directly affecting the quality of the circumferential weld.

[0003] To address the above issues, the applicant has applied for an invention patent, CN202211735184.7, entitled "Circumferential Welding Assembly Device for Towers and Storage Tanks," which allows for direct observation of deformation and automatic offsetting of bending deformation. During horizontal circumferential welding, it enables rapid alignment of pipes, saving significant manual alignment operations and improving work efficiency compared to the past.

[0004] However, during use, the centering device requires installation and disassembly, with the installation process being particularly cumbersome. After pipe alignment, the centering device must be disassembled before subsequent welding. This fails to maximize the efficiency of cylinder welding, and with increasing production capacity, it cannot keep up with production line needs. Furthermore, cylinder welding has specific parameter requirements, including butt joint gaps and misalignment, which are often difficult to meet in practice. While welding process documents prohibit misalignment, the manufacturing standards for raw materials are often lenient. For the ellipticity error of seamless cylinders, the aforementioned patent cannot correct or eliminate it, requiring further rotation of the cylinder to find the optimal angle. This further reduces overall welding efficiency, and misalignment cannot be well controlled, resulting in unsatisfactory welding concentricity and unstable product quality. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a rotary synchronous shaping tank body spot welding assembly device that improves welding efficiency and quality. After docking, synchronous rounding and shaping can completely eliminate the misalignment of the two tank body sections.

[0006] The rotary synchronous shaping tank body spot welding assembly device of the present invention includes a pressure roller lifting bracket, a pressure roller, a pressure roller positioning and moving mechanism, and a tank body support mechanism. The tank body support mechanism can drive the tank body on it to rotate. The tank body support mechanism has multiple sets arranged linearly, and the pressure roller positioning and moving mechanism and multiple sets of pressure roller lifting brackets are symmetrically arranged on both sides of the multiple sets of tank body support mechanisms. The pressure roller is composed of a receiving pressure roller and an inserting pressure roller whose ends can be connected together. The pressure roller positioning and moving mechanism can send the receiving pressure roller and the inserting pressure roller into the tank body from both ends and connect them together to form a pressure roller. The pressure roller positioning and moving mechanism can also press the pressure roller tightly against the bottom of the inner surface of the tank body. The pressure roller can rotate.

[0007] After the two cylindrical sections are hoisted onto the cylindrical support mechanism at the same height and joined together, they undergo synchronous rounding and shaping. Once hoisted and joined, the pressure roller positioning and moving mechanism from both sides feeds the receiving pressure roller and the insertion pressure roller into the cylindrical body to join them together, forming a pressure roller. Under the action of the pressure roller positioning and moving mechanism, the pressure roller is pressed to the bottom of the inner surface of the cylindrical body. The cylindrical support mechanism drives the cylindrical body to rotate continuously, and the pressure roller rotates passively. The pressure roller and the cylindrical support mechanism simulate a plate rolling machine to round the cylindrical body, thereby completely eliminating the misalignment at the joint of the two cylindrical sections. This eliminates the need for manual searching for the optimal fitting angle, improves welding efficiency, effectively controls the misalignment, ensures good concentricity and straightness of the two cylindrical sections, and significantly improves product quality.

[0008] Each cylinder support mechanism is equipped with at least two heavy-duty electric rollers as cylinder rotation drive devices.

[0009] The pressure roller positioning and moving mechanism of this invention includes two vertically adjustable clamping and circulating modules. Each clamping and circulating module includes a driving sprocket, a driven sprocket, and a chain between them. Several clamping blocks with arc-shaped top surfaces are arranged on the chain, and the clamping blocks circulate with the chain. The two clamping and circulating modules move in opposite directions, forming a circular pressure roller clamping area between the clamping blocks of the upper and lower clamping and circulating modules. The receiving pressure roller and the inserting pressure roller are located within the pressure roller clamping area, and the rotation of the chain drives the pressure roller within the clamping area to move.

[0010] Preferably, the clamping block has multiple rubber rollers on its arc-shaped top surface, which creates circumferential rolling friction between the clamping block and the pressure roller, facilitating the rotation of the pressure roller and driving its axial movement.

[0011] The clamping circulation module can move up and down synchronously along the lifting guide column under the drive of the lifting screw I.

[0012] Preferably, the end of the insertion roller is provided with a tapered head, and the end of the receiving roller is provided with a tapered groove adapted to the tapered head. The receiving roller and the insertion roller can be seamlessly inserted together through the tapered head and the tapered groove.

[0013] Preferably, the receiving pressure roller and the inserting pressure roller are hollow structures with star-shaped support ribs inside, which reduces weight and increases strength.

[0014] The pressure roller lifting bracket of the present invention includes a grooved roller, which is mounted on a lifting seat. The lifting seat can move up and down under the drive of the lifting screw II.

[0015] The beneficial effects of this invention compared to the prior art are:

[0016] The rotary synchronous shaping tank body spot welding assembly device of this invention performs synchronous rounding and shaping after docking, thereby completely eliminating the misalignment at the joint of the two tank sections. Furthermore, the rounding and shaping process simultaneously provides a rotating support platform for circumferential spot welding, allowing multiple processes to be performed at the same station. In addition, after synchronous rounding and shaping, there is no need for manual searching for the optimal fitting angle, saving a significant amount of manual labor, improving welding efficiency, and satisfying all welding parameter requirements with a single clamping. The misalignment is well controlled, resulting in good concentricity and straightness of the two tank sections, and a substantial improvement in product quality. Attached Figure Description

[0017] Figure 1 This is one of the perspective views of the present invention (before the receiving pressure roller and the inserting pressure roller are fed into the cylinder);

[0018] Figure 2 This is the front view of the present invention;

[0019] Figure 3 This is the second perspective view of the present invention (after the receiving pressure roller and the insertion pressure roller are fed into the cylinder and connected);

[0020] Figure 4 It is a three-dimensional view of the joint between the receiving pressure roller and the insert pressure roller;

[0021] Figure 5 It is a cross-sectional view of the joint between the receiving pressure roller and the insert pressure roller;

[0022] Figure 6 This is a schematic diagram of the star-shaped support ribs inside the pressure roller;

[0023] Figure 7 This is a front structural diagram of the pressure roller positioning and moving mechanism;

[0024] Figure 8 This is a schematic diagram of the rear structure of the pressure roller positioning and moving mechanism;

[0025] Figure 9 This is a side view of the pressure roller positioning and moving mechanism;

[0026] Figure 10 This is a schematic diagram of the clamping block structure;

[0027] Figure 11 This is a schematic diagram of the structure of the pressure roller lifting bracket.

[0028] In the diagram: 1. Pressure roller lifting bracket; 2. Pressure roller receiving bracket; 3. Pressure roller positioning and moving mechanism; 4. Base; 5. Cylinder support mechanism; 6. Cylinder; 7. Spot welding robotic arm; 8. Inserted pressure roller; 9. Support rib; 10. Clamping circulation module; 11. Driven sprocket; 12. Chain; 13. Clamping block; 13.1. Rubber roller; 14. Pressure plate; 15. Tensioning device; 16. Drive sprocket; 17. Lifting guide column; 18. Lifting screw I; 19. Servo motor; 20. Synchronous sprocket; 21. Synchronous chain; 22. Pressure roller clamping area; 23. Grooved roller; 24. Lifting seat; 25. Lifting screw II. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments.

[0030] However, the description of the present invention is merely a structural or even functional description of the embodiments, and the scope of the present invention is not limited by the embodiments described herein.

[0031] For example, multiple embodiments may have various modifications and forms, and it should be understood that the scope of the present invention includes equivalents that can realize the technical concept.

[0032] like Figures 1-11 As shown, this embodiment is achieved through the following technical solution: it includes a base 4, a pressure roller lifting bracket 1, a pressure roller, a pressure roller positioning and moving mechanism 3, and a cylinder support mechanism 5. Multiple sets of cylinder support mechanisms 5 are arranged linearly, and each cylinder support mechanism 5 is equipped with at least two heavy-duty electric rollers. The cylinder support mechanism 5 can drive the cylinder 6 on it to rotate. In this embodiment, the heavy-duty electric rollers are rubber-coated electric rollers.

[0033] The multiple sets of cylinder support mechanisms 5 are symmetrically arranged on both sides of the pressure roller positioning and moving mechanism 3 and multiple sets of pressure roller lifting brackets 1. The pressure roller positioning and moving mechanism 3 can send the receiving pressure roller 2 and the insertion pressure roller 8 into the cylinder 6 from both ends and connect them together to form a pressure roller. The pressure roller positioning and moving mechanism 3 can also press the pressure roller tightly to the bottom of the inner surface of the cylinder 6. The pressure roller can rotate.

[0034] In this embodiment, the pressure roller positioning and moving mechanism 3 includes two vertically adjustable clamping and circulating modules 10. Each clamping and circulating module 10 includes a driving sprocket 16, a driven sprocket 11, and a chain 12 between them. Several clamping blocks 13 with arc-shaped top surfaces are arranged on the chain 12. The clamping blocks 13 move cyclically with the chain 12. The two clamping and circulating modules 10 move in opposite directions, and a circular pressure roller clamping area 22 is formed between the clamping blocks 13 of the upper and lower clamping and circulating modules 10. The receiving pressure roller and the inserting pressure roller are located in the pressure roller clamping area. When the chain rotates, it drives the pressure rollers in the clamping area to move, thereby feeding the receiving pressure roller 2 and the inserting pressure roller 8 into the cylinder 6 from both ends and joining them together to form a pressure roller. According to the direction of feeding into the cylinder 6, the driving sprocket 16 is located at the rear of the clamping and circulating module 10. When driven, it can make the clamping blocks 13 on the upper and lower sides of the pressure roller clamping area 22 squeeze together and slightly protrude, forming a better squeezing and clamping effect. In addition, a pressure plate 14 is provided at the center of the clamping circulation module 10 to provide compression support for the clamping block 13, and tensioning devices 15 are provided at both ends of the pressure plate 14. The arc-shaped top surface of the clamping block 13 is provided with multiple rubber rollers 13.1, so that the clamping block 13 and the pressure roller form circumferential rolling friction, which facilitates the rotation of the pressure roller and is conducive to driving the pressure roller to make axial movement.

[0035] The clamping circulation module 10 can move up and down synchronously along the lifting guide column 17 under the drive of the lifting screw I18. The drive sprocket 16 is driven by the servo motor 19, and the output shaft at the rear end of the servo motor 19 is equipped with a synchronous sprocket 20. The upper and lower synchronous sprockets 20 are connected by a synchronous chain 21 to ensure the consistency of the movement speed of the two clamping circulation modules 10.

[0036] The insertion roller 8 has a tapered head at its end, and the receiving roller 2 has a tapered groove at its end that matches the tapered head. The receiving roller 2 and the insertion roller 8 can be seamlessly connected together through the tapered head and the tapered groove. The receiving roller 2 and the insertion roller 8 are hollow structures with star-shaped support ribs 9 inside.

[0037] The pressure roller lifting bracket 1 includes a grooved roller 23, which is mounted on a lifting seat 24. The lifting seat 24 can move up and down under the drive of the lifting screw II 25.

[0038] The working process or principle of this invention:

[0039] After the two sections of the cylinder are hoisted onto the cylinder support mechanism of equal height and connected, they are then simultaneously rounded and shaped.

[0040] After hoisting and docking, the servo motor 19 of the pressure roller positioning and moving mechanism 3 starts, and the chain rotation drives the receiving pressure roller 2 and the insertion pressure roller 8 in the pressure roller clamping area 22 to move, feeding the receiving pressure roller 2 and the insertion pressure roller 8 into the cylinder 6 from both sides to dock together and form a pressure roller. The lifting screw I18 rotates, driving the two clamping circulation modules 10 to descend synchronously, pressing the pressure roller to the bottom of the inner surface of the cylinder 6. The cylinder support mechanism 5 drives the cylinder 6 to rotate continuously, and the pressure roller rotates passively. The pressure roller and the cylinder support mechanism 5 simulate a plate rolling machine to round the cylinder, thereby completely eliminating the misalignment at the docking point of the two cylinder sections. After the misalignment is completely eliminated, the cylinder support mechanism 5 becomes a stepping rotation, causing the cylinder 6 to rotate step by step from the belt. During this process, the spot welding robotic arm 7 on the side is used to weld the docking point of the cylinder. There is no need for manual searching for the best fitting angle, which improves welding efficiency, makes the misalignment well controlled, and ensures good concentricity and straightness of the two cylinder sections, resulting in a significant improvement in product quality. After welding is completed, the receiving pressure roller 2 and the inserting pressure roller 8 are retracted.

[0041] Of course, the above description is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the embodiments of the present invention. The present invention is also not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of the present invention should fall within the patent coverage of the present invention.

Claims

1. A rotary synchronous shaping tank body spot welding assembly device, characterized in that, It includes a pressure roller lifting bracket (1), a pressure roller, a pressure roller positioning and moving mechanism (3) and a cylinder support mechanism (5). The cylinder support mechanism (5) can drive the cylinder (6) on it to rotate. The cylinder support mechanism (5) is provided with multiple sets arranged linearly. The pressure roller positioning and moving mechanism (3) and multiple sets of pressure roller lifting brackets (1) are symmetrically arranged on both sides of the multiple sets of cylinder support mechanisms (5). The pressure roller consists of a receiving pressure roller (2) whose ends can be joined together and an inserting pressure roller (8); The pressure roller positioning and moving mechanism (3) can feed the receiving pressure roller (2) and the insertion pressure roller (8) into the cylinder (6) from both ends respectively and connect them together to form a pressure roller. The pressure roller positioning and moving mechanism (3) can also press the pressure roller tightly to the bottom of the inner surface of the cylinder (6). The pressure roller can rotate.

2. The rotary synchronous shaping tank body spot welding assembly device according to claim 1, characterized in that, Each cylinder support mechanism (5) is equipped with at least two heavy-duty electric rollers.

3. The rotary synchronous shaping tank body spot welding assembly device according to claim 1, characterized in that, The pressure roller positioning and moving mechanism (3) includes two vertically adjustable clamping and circulating modules (10). Each clamping and circulating module (10) includes a drive sprocket (16), a driven sprocket (11), and a chain (12) between them. Several clamping blocks (13) with arc-shaped top surfaces are arranged on the chain (12). The clamping blocks (13) move in a circular motion with the chain (12). The two clamping and circulating modules (10) move in opposite directions. A circular pressure roller clamping area (22) is formed between the clamping blocks (13) of the two clamping and circulating modules (10).

4. The rotary synchronous shaping tank body spot welding assembly device according to claim 3, characterized in that, The clamping block (13) has multiple rubber rollers (13.1) on its arc-shaped top surface.

5. The rotary synchronous shaping tank body spot welding assembly device according to claim 3 or 4, characterized in that, The clamping cycle module (10) can move up and down synchronously along the lifting guide column (17) under the drive of the lifting screw I (18).

6. The rotary synchronous shaping tank body spot welding assembly device according to claim 1, characterized in that, The insertion roller (8) is provided with a tapered head at its end, and the receiving roller (2) is provided with a tapered groove that matches the tapered head at its end. The receiving roller (2) and the insertion roller (8) can be seamlessly inserted together through the tapered head and the tapered groove.

7. The rotary synchronous shaping tank body spot welding assembly device according to claim 6, characterized in that, The receiving pressure roller (2) and the inserting pressure roller (8) are hollow structures with star-shaped support ribs (9) inside.

8. The rotary synchronous shaping tank body spot welding assembly device according to claim 1, characterized in that, The pressure roller lifting bracket (1) includes a grooved roller (23), which is mounted on a lifting seat (24). The lifting seat (24) can move up and down under the drive of the lifting screw II (25).

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