A pressure vessel longitudinal seam welding station

Abstract

The utility model relates to pressure vessel production technical field especially discloses a pressure vessel longitudinal seam welding workstation, include: welding assembly and workstation, welding assembly includes six axis mechanical arm and welding torch head, welding torch head is fixed on the movable arm of six axis mechanical arm, and the workstation is established in the outside close to welding assembly, and the workstation includes support vertical board and fixed axle spare, and the top of support vertical board is provided with the installation horizontal plate, and the top of fixed axle spare is provided with the strip flat plate, and the top of installation horizontal plate is provided with the welding opening that is in alignment with strip flat plate, the inside both sides of welding opening all are provided with the limit stopper, and the fixed setting of installation horizontal plate has the down pressure air cylinder, and the down pressure air cylinder is used for controlling the lifting height of limit stopper, effectively realizes the longitudinal seam welding of the bottle body shell of pressure vessel automatically, and effectively ensures that the position of welding will not appear the deviation, improves the work efficiency, guarantees the production quality.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel manufacturing technology, and in particular to a longitudinal seam welding workstation for pressure vessels. Background Technology

[0002] Pressure vessels are mainly used to store oxygen and liquids. Existing pressure vessels are mainly composed of a bottle shell and a sealed cap. During the manufacturing of the bottle shell, the plates need to be rolled into a circle to form the bottle shell, and the joints of the bottle shell are welded, also known as longitudinal seam welding. Through longitudinal seam welding, the bottle shell is formed into a cylindrical shape. During the longitudinal seam welding process, it is necessary to ensure that the weld points at the joints of the bottle shell are uniform and the weld is sealed to ensure the overall airtightness of the bottle shell. Since the bottle shell is cylindrical, the position of the bottle shell needs to be fixed during the welding process to ensure the accuracy of the weld points.

[0003] Currently, the outer shell of pressure vessels is mostly welded manually using a handheld welding torch during the welding process. However, it is difficult to ensure that the position of the outer shell of the pressure vessel will not shift during manual welding, which affects the production quality. In addition, manual welding is not only costly, but also difficult to improve production efficiency.

[0004] Because the outer shell of existing pressure vessels is cylindrical, it tends to wobble during the longitudinal seam welding process. If the outer shell rolls or shifts during welding, the position of the longitudinal seam weld point will deviate, affecting the quality of the longitudinal seam weld.

[0005] Therefore, how to automate the longitudinal seam welding of pressure vessels is the main technical problem that technicians need to solve. Utility Model Content

[0006] The purpose of this invention is to provide a pressure vessel longitudinal seam welding workstation to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pressure vessel longitudinal seam welding workstation, comprising: welding components and a worktable; The welding assembly includes a six-axis robotic arm and a welding torch. The welding torch is fixed to the movable arm of the six-axis robotic arm. The worktable is located near the outside of the welding assembly and includes a support vertical plate and a fixed shaft. One end of the fixed shaft is fixed to the outside of the support vertical plate, and a mounting horizontal plate is provided on the top of the support vertical plate. A strip plate is provided on the top of the fixed shaft, and a welding opening aligned with the strip plate is provided on the top of the mounting horizontal plate. Both sides of the welded opening are movably equipped with limit blocks. A pressing cylinder is fixedly installed on the mounting plate. The power output end of the pressing cylinder is fixedly connected to the top of the limit block. The pressing cylinder is used to control the lifting height of the limit block. A limit column is provided at the other end of the fixed shaft. A blocking mechanism is provided on the outside of the mounting plate. The blocking mechanism corresponds to the limit column and is used to fix the limit column.

[0008] Preferably, the blocking mechanism includes a lifting cylinder and a limiting fastener. One end of the limiting fastener is hinged to the outside of the mounting plate. A telescopic cylinder is provided outside the limiting fastener. The power output end of the lifting cylinder is connected to the top of the telescopic cylinder, and the power output end of the telescopic cylinder is hinged to the other end of the limiting fastener.

[0009] Preferably, the mounting plate is further provided with a push cylinder, and a correction plate is provided on the power output end of the push cylinder. The correction plate is located directly above the limiting pressure block, and the correction plate is aligned with the central axis of the welding opening.

[0010] Preferably, when there are two worktables, the welding assembly is located between the two worktables, and the distance from the welding assembly to the two worktables is the same.

[0011] Preferably, the fixed shaft is further provided with a cooling pipe inside, and the two ends of the cooling pipe are respectively provided with a liquid inlet and a liquid outlet, which extend to the other end of the fixed shaft.

[0012] Preferably, the cooling pipe is sealed in a U-shape, and the corner of the cooling pipe is located near the end of the fixed shaft.

[0013] Preferably, the side of the limiting block near the welding opening is inclined.

[0014] Compared with existing technologies, this technical solution provides a pressure vessel longitudinal seam welding workstation: It includes a welding assembly and a worktable. The welding assembly comprises a six-axis robotic arm and a welding torch. The welding torch is fixed to the movable arm of the six-axis robotic arm, with the worktable positioned near the outside of the welding assembly. The six-axis robotic arm can then drive the welding torch to perform longitudinal seam welding on the outer shell of the bottle on the worktable. The worktable includes a supporting vertical plate and a fixed shaft. One end of the fixed shaft is fixed to the outside of the supporting vertical plate. A mounting horizontal plate is provided at the top of the supporting vertical plate, and a strip-shaped plate is provided at the top of the fixed shaft. A welding opening aligned with the strip-shaped plate is opened at the top of the mounting horizontal plate. The six-axis robotic arm can drive the welding torch through the welding opening to perform longitudinal seam welding on the outer shell of the bottle fitted onto the fixed shaft. Limiting pressure is provided on both sides inside the welding opening. The device also features a pressure block with a fixed downward cylinder on the mounting plate. The power output end of the downward cylinder is fixedly connected to the top of the limiting pressure block, allowing the downward cylinder to control the lifting height of the limiting pressure block. This causes the limiting pressure block to press tightly against the bottle shell, which is fitted onto the outside of the fixed shaft, ensuring that the bottle shell does not shift during welding and thus guaranteeing precise weld points. A limiting post is provided at the other end of the fixed shaft, and a blocking mechanism is provided outside the mounting plate, corresponding to the limiting post. The blocking mechanism can be used to fix the limiting post. Before welding, the blocking mechanism can limit the other end of the fixed shaft, preventing the bottle shell, which is fitted onto the fixed shaft, from slipping off. This invention effectively automates the longitudinal seam welding of pressure vessel bottle shells, improving work efficiency while ensuring production quality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the workbench structure in this utility model.

[0018] Figure 3 This is a schematic diagram of the workbench from another perspective in this utility model.

[0019] Figure 4 This is a schematic diagram of the blocking mechanism in this utility model.

[0020] Figure 5 This is a schematic diagram of the fixed shaft structure in this utility model.

[0021] As indicated by the labels in the diagram: 1. Welding assembly; 2. Workbench; 3. Limiting block; 4. Pressing cylinder; 5. Blocking mechanism; 11. Six-axis robotic arm; 12. Welding gun head; 21. Supporting vertical plate; 22. Fixing shaft; 23. Mounting horizontal plate; 51. Lifting cylinder; 52. Limiting fastener; 53. Telescopic cylinder; 221. Strip plate; 222. Limiting column; 231. Welding opening; 232. Pushing cylinder; 233. Correcting plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0023] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] It should be understood that although the terms "first," "second," "third," etc., may be used to describe various components in this invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of this invention, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] The following is in conjunction with the appendix Figures 1 to 5 The technical solutions of the embodiments of this utility model are described in detail.

[0029] In Example 1, to automate the longitudinal seam welding of pressure vessel shells and improve production efficiency, this example includes a welding assembly 1 and a worktable 2. The welding assembly 1 comprises a six-axis robotic arm 11 and a welding torch 12. The welding torch 12 is fixed to the movable arm of the six-axis robotic arm 11, and the worktable 2 is positioned near the outside of the welding assembly 1. The six-axis robotic arm 11 then drives the welding torch 12 to perform longitudinal seam welding on the shell of the pressure vessel on the worktable 2. The platform 2 includes a supporting vertical plate 21 and a fixed shaft 22. One end of the fixed shaft 22 is fixed to the outside of the supporting vertical plate 21. A mounting horizontal plate 23 is provided on the top of the supporting vertical plate 21, and a strip plate 221 is provided on the top of the fixed shaft 22. A welding opening 231 aligned with the strip plate 221 is provided on the top of the mounting horizontal plate 23. The six-axis robotic arm 11 can drive the welding gun head 12 to perform longitudinal seam welding on the bottle shell sleeved on the outside of the fixed shaft 22 through the welding opening 231. By providing a limiting post 222 at the other end of the fixed shaft 22, and by providing a blocking mechanism 5 on the outside of the mounting plate 23, the blocking mechanism 5 corresponds to the limiting post 222. The blocking mechanism 5 can be used to fix the limiting post 222. Before welding, the blocking mechanism 5 can limit the other end of the fixed shaft 22 so that the bottle shell fixedly sleeved on the outside of the fixed shaft 22 will not slip out of the fixed shaft 22.

[0030] In this embodiment, it should be noted that the blocking mechanism 5 includes a lifting cylinder 51 and a limiting fastener 52. One end of the limiting fastener 52 is hinged to the outside of the mounting plate 23. A telescopic cylinder 53 is provided outside the limiting fastener 52, so that the power output end of the lifting cylinder 51 is connected to the top of the telescopic cylinder 53, and the power output end of the telescopic cylinder 53 is also hinged to the other end of the limiting fastener 52. The lifting cylinder 51 drives the telescopic cylinder 53 to perform lifting and lowering actions, and the telescopic cylinder 53 drives the limiting fastener 52 to move. Thus, the limiting fastener 52 blocks the other end of the fixed shaft 22, preventing the bottle shell on the fixed shaft 22 from sliding out.

[0031] It should be noted that a push cylinder 232 is also provided on the mounting plate 23, and a correction plate 233 is provided on the power output end of the push cylinder 232. The correction plate 233 is located directly above the limiting pressure block 3, and the correction plate 233 is aligned with the central axis of the welding opening 231. The push cylinder 232 drives the correction plate 233 to extend, so that the staff can observe whether the position of the bottle shell to be welded is aligned with the outside of the correction plate 233. That is, before welding, ensure that the longitudinal seam of the bottle shell is aligned with the central axis of the welding opening 231, so that when the welding gun head 12 enters the welding opening 231, the longitudinal seam of the bottle shell can be welded.

[0032] It should also be noted that a cooling pipe is provided inside the fixed shaft 22, and an inlet and an outlet are provided at both ends of the cooling pipe, so that the inlet and outlet extend to the other end of the fixed shaft 22.

[0033] To further define the above description, the cooling pipe is sealed in a U-shape. At the corner of the cooling pipe, near the end of the fixed shaft 22, coolant is introduced into the cooling pipe through the inlet and discharged through the outlet. When the fixed shaft 22 is fitted with a bottle shell, and the welding assembly 1 performs longitudinal seam welding on the bottle shell, it can be ensured that the bottle shell will not deform due to heat.

[0034] In Example 2, to ensure accurate weld joints during longitudinal seam welding of the bottle shell (as the bottle is cylindrical), a limiting device is needed to prevent rotation of the bottle shell during horizontal welding. This is to guarantee production quality. In this example, limiting blocks 3 are installed on both sides of the inside of the welding opening 231. A pressing cylinder 4 is fixedly installed on the mounting plate 23, and its power output end is fixedly connected to the top of the limiting blocks 3. The pressing cylinder 4 controls the lifting height of the limiting blocks 3, thereby pressing the limiting blocks 3 tightly against the bottle shell outside the fixed shaft 22. This ensures that the bottle shell does not shift during welding, thus guaranteeing accurate weld joints.

[0035] By also providing a push cylinder 232 on the mounting plate 23, and by providing a correction plate 233 on the power output end of the push cylinder 232, the correction plate 233 is positioned directly above the limiting pressure block 3, so that the correction plate 233 is aligned with the central axis of the welding opening 231. The push cylinder 232 drives the correction plate 233 to extend, so that the staff can observe whether the position of the bottle shell to be welded is aligned with the outside of the correction plate 233. That is, before welding, ensure that the longitudinal seam of the bottle shell is aligned with the central axis of the welding opening 231, so that when the welding gun head 12 enters the welding opening 231, the longitudinal seam of the bottle shell can be welded.

[0036] In this embodiment, it should be added that the side of the limiting block 3 near the welding opening 231 is set at an angle to ensure that when the welding gun head 12 of the welding assembly 1 welds the longitudinal seam of the bottle shell through the welding opening 231, the blocking area of ​​the limiting block 3 is reduced, so as to ensure that the welding gun head 12 will not directly collide with the limiting block 3.

[0037] In conjunction with the above embodiments, to achieve alternating dual-station operation suitable for continuous production, when there are two workbenches 2, the welding assembly 1 is located between the two workbenches 2, with the distance from both workbenches 2 to the welding assembly 1 being the same. This allows for alternating dual-station operation, reducing standby time. When the welding assembly 1 is performing longitudinal seam welding on the bottle shell on one of the workbenches 2, the operator can place the bottle shell to be welded outside the fixed shaft 22 of the other workbench 2, adjust the welding position, and then fix the position of the bottle shell by the limiting pressure block 3. This facilitates the subsequent removal of the bottle shell that has completed longitudinal seam welding on one of the workbenches 2, while the welding assembly 1 can continue to perform longitudinal seam welding on the bottle shell on the other workbench 2 without stopping the machine. This effectively achieves alternating dual-station longitudinal seam welding of the bottle shell, making it suitable for continuous production and improving production efficiency.

[0038] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0039] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pressure vessel longitudinal seam welding workstation, characterized in that, include: Welding components and worktable; The welding assembly includes a six-axis robotic arm and a welding torch. The welding torch is fixed on the movable arm of the six-axis robotic arm. The worktable is located near the outside of the welding assembly and includes a supporting vertical plate and a fixed shaft. One end of the fixed shaft is fixed to the outside of the supporting vertical plate, and a mounting horizontal plate is provided on the top of the supporting vertical plate. A strip-shaped flat plate is provided on the top of the fixed shaft, and a welding opening aligned with the strip-shaped flat plate is opened on the top of the mounting horizontal plate. Limiting blocks are movably installed on both sides of the inside of the welding opening. A pressing cylinder is fixedly installed on the mounting plate. The power output end of the pressing cylinder is fixedly connected to the top of the limiting block. The pressing cylinder is used to control the lifting height of the limiting block. A limiting column is provided at the other end of the fixed shaft. A blocking mechanism is provided on the outside of the mounting plate. The blocking mechanism corresponds to the limiting column and is used to fix the limiting column.

2. The pressure vessel longitudinal seam welding workstation according to claim 1, characterized in that, The blocking mechanism includes a lifting cylinder and a limiting fastener. One end of the limiting fastener is hinged to the outside of the mounting plate. A telescopic cylinder is provided outside the limiting fastener. The power output end of the lifting cylinder is connected to the top of the telescopic cylinder, and the power output end of the telescopic cylinder is hinged to the other end of the limiting fastener.

3. The pressure vessel longitudinal seam welding workstation according to claim 1, characterized in that, The mounting plate is also equipped with a push cylinder, and a correction plate is provided on the power output end of the push cylinder. The correction plate is located directly above the limiting pressure block, and the correction plate is aligned with the central axis of the welding opening.

4. The pressure vessel longitudinal seam welding workstation according to claim 1, characterized in that, When there are two workbenches, the welding assembly is located between the two workbenches, and the distance from the two workbenches to the welding assembly is the same.

5. A pressure vessel longitudinal seam welding workstation according to claim 1, characterized in that, The fixed shaft is also provided with a cooling pipe inside, and the two ends of the cooling pipe are respectively provided with a liquid inlet and a liquid outlet, which extend to the other end of the fixed shaft.

6. A pressure vessel longitudinal seam welding workstation according to claim 5, characterized in that, The cooling pipe is sealed in a U-shape, with the corner of the cooling pipe located near the end of the fixed shaft.

7. A pressure vessel longitudinal seam welding workstation according to claim 1, characterized in that, The limiting block has an inclined surface on the side near the welding opening.

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