A flange assembly machine

Abstract

This application relates to the field of flange assembly equipment, specifically disclosing a flange assembly machine, which includes a frame, a pipe clamping mechanism, two storage cylinders, and two flange clamping and moving mechanisms. The device uses the pipe clamping mechanism to precisely position the pipe, and utilizes the coordinated operation of the storage cylinders and the flange clamping and moving mechanisms to achieve automatic storage and precise assembly of the flanges. The storage cylinders employ a unique arched plate structure design, combined with a movable push plate to push materials; the flange clamping and moving mechanisms ensure accurate flange positioning through an outer ring and pressure-holding components. Furthermore, numerous detailed optimizations, such as the application of reinforcing rings, limiting pressure blocks, and sliding components, further enhance overall stability and ease of operation. This application achieves the effects of improving flange assembly efficiency, reducing reliance on manual labor, and ensuring assembly accuracy.

Description

Technical Field

[0001] This application relates to the field of flange assembly equipment, and in particular to a flange assembly machine. Background Technology

[0002] Flange assembly technology plays a crucial role in modern industrial production, especially in pipeline connections. As the manufacturing industry continuously pursues higher efficiency and precision, flange assembly equipment has become a core tool for improving production efficiency, reducing labor intensity, and ensuring product quality. From early manual operations to today's semi-automatic and even fully automatic assembly systems, advancements in flange assembly technology have significantly improved the speed and quality standards of various engineering projects, driving the rapid development of the entire industry.

[0003] In related technologies, a single flange is usually moved manually onto a tooling fixture, which then clamps and moves the flange to align it with the metal pipe. After that, the flange is placed on the metal pipe, and then the flange and the metal pipe are welded together to achieve the connection and fixation between the flange and the metal pipe.

[0004] The aforementioned technologies have the following drawbacks: each time flanges are loaded, they need to be manually moved one by one onto the tooling fixture, which takes a considerable amount of time. Summary of the Invention

[0005] To improve flange assembly efficiency, this application provides a flange assembly machine.

[0006] The flange assembly machine provided in this application adopts the following technical solution: A flange assembly machine includes a frame, a pipe clamping mechanism, two storage cylinders, and two flange clamping moving mechanisms, wherein the pipe clamping mechanism is mounted on the frame; Along the length of the frame, two storage cylinders are respectively located on both sides of the pipe clamping mechanism. Each storage cylinder includes a limiting ring and a plurality of arched plates arranged along the axial direction of the limiting ring. The arched plates are arranged along the length of the frame, and the plurality of arched plates are distributed at circumferential intervals along the limiting ring. One arched plate is movably mounted on the frame. The end of the arched plate away from the pipe clamping mechanism is connected to the limiting ring, and a slot is formed between two adjacent arched plates. A push plate movably connected to the frame is provided on the side of the limiting ring away from the pipe clamping mechanism. Two flange clamping and moving mechanisms are correspondingly arranged with two storage cylinders; each flange clamping and moving mechanism includes an outer ring and multiple pressing members, the outer ring is coaxial with the limiting ring, and the outer ring can move toward the pipe clamping mechanism; the multiple pressing members are correspondingly arranged with multiple insertion slots, and are retractably installed on the inner side of the outer ring in the radial direction of the outer ring.

[0007] By adopting the above technical solution, the automation level of the flange assembly process is improved, with the following specific effects: The cooperation between the frame and the pipe clamping mechanism can stably fix the pipe to be assembled, improving assembly accuracy. The design of the storage cylinder, utilizing a structure composed of a limiting ring and multiple arched plates, can effectively store and separate flanges, facilitating subsequent operations. The design of the slot facilitates observation of the internal operation of the storage cylinder, aids in maintenance, and facilitates material retrieval by the flange clamping and moving mechanism. The push plate can move on the frame, thereby pushing the flanges in the storage cylinder to release one by one, improving material supply efficiency. In the flange clamping and moving mechanism, multiple clamping elements extend through the side wall of the flange clamping plate in the slot. After the multiple clamping elements clamp and fix the flange, the outer ring moves towards the pipe clamping mechanism, placing the flange onto the pipe to be assembled. In summary, this application achieves rapid flange assembly and improves flange assembly efficiency through the coordinated cooperation of the storage cylinder and the flange clamping and moving mechanism.

[0008] Preferably, the storage cylinder further includes a first reinforcing ring coaxial with the limiting ring, the first reinforcing ring being connected to the plurality of arched plates; the inner diameter of the limiting ring is smaller than the inner diameter of the inscribed circle of the plurality of arched plates; the inner diameter of the first reinforcing ring is greater than or equal to the inner diameter of the inscribed circle of the arched plate; the pressing member is located on the side of the first reinforcing ring away from the limiting ring.

[0009] By adopting the above technical solution, the storage cylinder of the flange assembly machine is equipped with a first reinforcing ring, which enhances structural stability and prevents deformation of the arched plate due to uneven stress. The design of the limiting ring's inner diameter being smaller than the inner diameter of the arched plate's inscribed circle allows for the storage of flanges. When flanges are stored, a stack of flanges is placed coaxially inside the storage cylinder, with the flanges stacked layer by layer from the limiting ring towards the first reinforcing ring. The limiting ring effectively restricts the movement of the flanges within the storage cylinder. The first reinforcing ring's inner diameter is greater than or equal to the inner diameter of the arched plate's inscribed circle, ensuring that the first reinforcing ring does not affect the sliding of the flanges within the storage cylinder when limiting multiple arched plates. The clamping component is located on the side of the first reinforcing ring furthest from the limiting ring. This allows the clamping component to pass through the slot and clamp the flange before moving towards the pipe clamping mechanism, without the first reinforcing ring obstructing its movement.

[0010] Preferably, the arched plate has a limiting block disposed at one end away from the limiting ring along the radius of the limiting ring; the limiting block is rotatably connected to the arched plate; the limiting block has a first state and a second state, in the first state the limiting block is located on the inner side of the arched plate, and in the second state the limiting block is located on the outer side of the arched plate.

[0011] By adopting the above technical solution, the flange assembly machine can effectively fix and release the flange during the material storage process. Specifically, in the first state, the limiting block is located inside the arched plate, which can prevent the flange from moving out of the cylinder opening on its own and ensure its stable storage in the cylinder; when it is necessary to remove the flange, the limiting block switches to the second state and moves to the outside of the arched plate, thereby releasing the restriction on the flange and facilitating subsequent operations.

[0012] Preferably, the limiting pressure block is connected to the arched plate by a torsion spring.

[0013] By adopting the above technical solution, under the action of the torsion spring, the limiting block is in the first state, limiting the flange. When the flange clamping and moving mechanism clamps the flange and removes it from the opening of the storage cylinder, the torsion spring deforms under sufficient external force. At this time, the limiting block is pressed into the second state, no longer limiting the flange, allowing the flange to smoothly exit from the storage cylinder, thus realizing the automatic operation of the limiting block. Simultaneously, utilizing the elastic characteristics of the torsion spring reduces the need for an external power source, simplifies the structure, and lowers manufacturing costs.

[0014] Preferably, the frame is provided with a positioning slide rail along its length; the storage cylinder is provided with a first positioning slider that is slidably connected to the positioning slide rail; and the outer ring is provided with a second positioning slider that is slidably connected to the positioning slide rail.

[0015] By adopting the above technical solution, the relative positions of the storage cylinder, flange clamping and moving mechanism, and pipe clamping mechanism are easily adjusted along the length of the frame. Specifically, the positioning slide rail on the frame cooperates with the first positioning slider of the storage cylinder and the second positioning slider of the outer ring to ensure the precise positioning of the storage cylinder and flange clamping and moving mechanism along the length of the frame, while allowing them to slide smoothly along the track, thereby improving the overall stability and ease of operation of the equipment. This design makes the flange assembly process more efficient and accurate.

[0016] Preferably, the outer wall of the arched plate is provided with a positioning slide rail arranged along the axis of the limiting ring; the storage cylinder further includes a movable bracket, the positioning slide rail is slidably connected to the movable bracket, and the movable bracket is connected to the first positioning slider with a first lifting component.

[0017] By adopting the above technical solution, the storage cylinder can slide into or out of the movable support via the positioning slide rail, enabling rapid assembly and disassembly of the storage cylinder. The first lifting component can adjust the height of the storage cylinder, facilitating the adjustment of the relative position between the storage cylinder and the pipe clamping mechanism, and enabling precise positioning between the flange and the pipe.

[0018] Preferably, the push plate is connected to the movable bracket by a first telescopic member arranged along the axis of the limiting ring.

[0019] By adopting the above technical solution, relative motion control between the push plate and the movable support is achieved. Specifically, the first telescopic component allows the push plate to be precisely adjusted along the axis of the limiting ring, thereby better cooperating with the pushing action of the flange inside the storage cylinder and improving assembly accuracy and efficiency.

[0020] Preferably, the outer ring has an inner ring that is coaxially rotatably connected to it, and the pressing member is connected to the inner ring by a second telescopic member.

[0021] By adopting the above technical solution, the rotating inner ring facilitates precise alignment between the clamping component and the slot, effectively improving the clamping accuracy of the flange.

[0022] Preferably, the outer ring is connected to the second positioning slider by a second lifting component.

[0023] By adopting the above technical solution, the height adjustment function of the outer ring relative to the frame is realized. This facilitates the relative position of the pressure regulating holder and the pipe clamping mechanism, and enables precise positioning between the flange and the pipe.

[0024] Preferably, the pressing member is equipped with a position sensor.

[0025] By adopting the above technical solutions, the flange assembly machine can achieve precise pressing and position detection of the flange.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The flange assembly machine in this application, by setting up a storage cylinder and a flange clamping and moving mechanism, and by utilizing the slot formed by the arched plate and the limiting ring and the cooperation of the pressing parts, can quickly complete the storage, retrieval and positioning of flanges, greatly improving the work efficiency of the flange feeding process, while reducing errors caused by manual intervention.

[0027] 2. The movable connection design between the storage cylinder and the frame in this application gives the whole device good flexibility. The position of the storage cylinder can be adjusted according to actual needs, and it can be adapted to the loading and unloading of flanges of different specifications, thus solving the inefficiency problem caused by the lack of flexibility in the prior art.

[0028] 3. The slot design in this application facilitates observation of the internal operation of the storage cylinder, makes maintenance of the storage cylinder easier, and facilitates material handling by the flange clamping and moving mechanism. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the storage cylinder and the flange clamping and moving mechanism.

[0031] Figure label: 1. Frame; 11. Alignment slide rail; 2. Storage cylinder; 21. Limiting ring; 22. Arched plate; 2201. Insertion slot; 221. Positioning slide rail; 23. First reinforcing ring; 230. Second reinforcing ring; 24. Limiting pressure block; 241. Torsion spring; 25. Movable bracket; 251. First lifting component; 252. First alignment slider; 26. Push plate; 27. First telescopic component; 3. Flange clamping and moving mechanism; 31. Outer ring; 32. Inner ring; 33. Pressing component; 34. Second telescopic component; 35. Second lifting component; 36. Second alignment slider; 37. Position sensor; 4. Pipe clamping mechanism; 5. Pipe; 50. Flange. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0033] This application discloses a flange assembly machine.

[0034] Reference Figure 1 and Figure 2 A flange 50 assembly machine includes a frame 1, a pipe clamping mechanism 4, two storage cylinders 2 and two flange clamping and moving mechanisms 3. The pipe clamping mechanism 4 is mounted on the frame 1 and is a prior art device.

[0035] Reference Figure 1 and Figure 2Along the length of frame 1, two storage cylinders 2 are respectively located on both sides of pipe clamping mechanism 4. Each storage cylinder 2 includes a limiting ring 21 and multiple arched plates 22 arranged along the axis of the limiting ring 21. The arched plates 22 are arranged along the length of frame 1, and the multiple arched plates 22 are distributed circumferentially at intervals along the limiting ring 21. One arched plate 22 is movably mounted on frame 1. The end of the arched plate 22 away from pipe clamping mechanism 4 is connected to the limiting ring 21, and a slot 2201 is formed between adjacent arched plates 22. A push plate 26, movably connected to frame 1, is provided on the side of the limiting ring 21 away from pipe clamping mechanism 4.

[0036] Reference Figure 1 and Figure 2 Two flange clamping and moving mechanisms 3 are correspondingly arranged with two storage cylinders 2. Each flange clamping and moving mechanism 3 includes an outer ring 31 and multiple clamping members 33. The outer ring 31 is coaxial with a limiting ring 21 and can move towards the pipe clamping mechanism 4. The multiple clamping members 33 are correspondingly arranged with multiple insertion slots 2201 and are retractably mounted inside the outer ring 31 in the radial direction. A position sensor 37 is provided on each clamping member 33. The position sensor 37 is used to detect whether the flange 50 has moved between the multiple clamping members 33, facilitating precise clamping and position detection of the flange 50 to be clamped by the multiple clamping members 33.

[0037] Reference Figure 1 and Figure 2 In this embodiment, the automation level of the flange 50 assembly process is improved, with the following specific effects: The cooperation between the frame 1 and the pipe clamping mechanism 4 can stably fix the pipe 5 to be assembled, improving assembly accuracy. The design of the storage cylinder 2, utilizing the structure composed of the limiting ring 21 and multiple arched plates 22, can effectively store and separate the flange 50, facilitating subsequent operations. The design of the insertion slot 2201 facilitates observation of the internal operation of the storage cylinder 2, making it easier to maintain the storage cylinder 2 and facilitating material retrieval by the flange clamping moving mechanism 3. The setting of the push plate 26 allows it to move on the frame 1, thereby pushing the flanges 50 in the storage cylinder 2 to be released one by one, improving the material supply efficiency. In the flange clamping moving mechanism 3, multiple pressing members 33 extend through the side wall of the flange 50 pressing plate in the insertion slot 2201. After the multiple pressing members 33 clamp and fix the flange 50, the outer ring 31 moves towards the pipe clamping mechanism 4, fitting the flange 50 onto the pipe 5 to be assembled. In summary, this application achieves rapid assembly of flange 50 through the coordinated operation of storage cylinder 2 and flange clamping and moving mechanism 3, thereby improving the assembly efficiency of flange 50.

[0038] Reference Figure 1 and Figure 2The storage cylinder 2 also includes a first reinforcing ring 23 and multiple second reinforcing rings 230 coaxial with the limiting ring 21. The first reinforcing ring 23 is located between the limiting ring 21 and the pipe clamping mechanism 4, and the multiple second reinforcing rings 230 are located between the first reinforcing ring 23 and the limiting ring 21. Both the first reinforcing ring 23 and the multiple second reinforcing rings 230 are connected to multiple arched plates 22. The inner diameter of the limiting ring 21 is smaller than the inner diameter of the inscribed circle of the multiple arched plates 22. The inner diameters of the first reinforcing ring 23 and the multiple second reinforcing rings 230 are all greater than or equal to the inner diameter of the inscribed circle of the arched plates 22. The clamping member 33 is located on the side of the first reinforcing ring 23 away from the limiting ring 21.

[0039] Reference Figure 1 and Figure 2 In this embodiment, the storage cylinder 2 of the flange 50 assembly machine is equipped with a first reinforcing ring 23, which enhances structural stability and prevents the arched plate 22 from deforming due to uneven stress. The design of the limiting ring 21 having an inner diameter smaller than the inner diameter of the inscribed circle of the arched plate 22 allows for the storage of flanges 50. When storing flanges 50, a stack of flanges 50 is placed coaxially within the storage cylinder 2, with the flanges 50 stacked layer by layer from the limiting ring 21 towards the first reinforcing ring 23. At this time, the limiting ring 21 can limit the movement of the flanges 50 within the storage cylinder 2. The inner diameter of the first reinforcing ring 23 is greater than or equal to the inner diameter of the inscribed circle of the arched plate 22. Therefore, when the first reinforcing ring 23 limits the movement of multiple arched plates 22, it does not affect the sliding of the flanges 50 within the storage cylinder 2. The clamping member 33 is located on the side of the first reinforcing ring 23 away from the limiting ring 21. After the clamping member 33 passes through the insertion slot 2201 to clamp the flange 50, when it moves towards the pipe clamping mechanism 4, the first reinforcing ring 23 will not obstruct the movement of the clamping member 33.

[0040] Reference Figure 1 and Figure 2 An arched plate 22 is provided with a limiting block 24 at one end away from the limiting ring 21, which is arranged along the radial direction of the limiting ring 21. The limiting block 24 is rotatably connected to the arched plate 22. The limiting block 24 has a first state and a second state. In the first state, the limiting block 24 is located on the inner side of the arched plate 22, and in the second state, the limiting block 24 is located on the outer side of the arched plate 22.

[0041] Reference Figure 1 and Figure 2 In this embodiment, the flange 50 assembly machine can effectively fix and release the flange 50 during the material storage process. Specifically, in the first state, the limiting block 24 is located inside the arched plate 22, which can prevent the flange 50 from moving out of the opening of the storage cylinder 2 and ensure its stable storage in the storage cylinder 2. When it is necessary to remove the flange 50, the limiting block 24 switches to the second state and moves to the outside of the arched plate 22, thereby releasing the restriction on the flange 50 and facilitating subsequent operations.

[0042] Reference Figure 1 and Figure 2 The limiting pressure block 24 is connected to the arched plate 22 by a torsion spring 241. In this embodiment, under the torque of the torsion spring 241, the limiting pressure block 24 is in a first state, limiting the flange 50. When the flange clamping and moving mechanism 3 clamps the flange 50 and removes the flange 50 from the opening of the storage cylinder 2, the torsion spring 241 can deform under sufficiently large external force. At this time, the limiting pressure block 24 is pressed into a second state, no longer limiting the flange 50, allowing the flange 50 to smoothly exit from the storage cylinder 2, realizing the automatic operation of the limiting pressure block 24. At the same time, by utilizing the elastic characteristics of the torsion spring 241, the requirement for an external power source can be reduced, the structure can be simplified, and the manufacturing cost can be reduced.

[0043] Reference Figure 1 and Figure 2 The frame 1 has a positioning slide rail 11 along its length. The storage cylinder 2 has a first positioning slider 252 slidably connected to the positioning slide rail 11. The outer ring 31 has a second positioning slider 36 slidably connected to the positioning slide rail 11. In this embodiment, the relative positions of the storage cylinder 2, the flange clamping and moving mechanism 3, and the pipe clamping mechanism 4 are easily adjusted along the length of the frame 1. Specifically, the positioning slide rail 11 on the frame 1 cooperates with the first positioning slider 252 of the storage cylinder 2 and the second positioning slider 36 of the outer ring 31 to ensure accurate positioning of the storage cylinder 2 and the flange clamping and moving mechanism 3 along the length of the frame 1, while allowing them to slide smoothly along the track, thereby improving the overall stability and ease of operation of the equipment. This design makes the flange 50 assembly process more efficient and accurate.

[0044] Reference Figure 1 and Figure 2 The outer wall of the arched plate 22 is provided with a positioning slide rail 221 arranged along the axis of the limiting ring 21. The storage cylinder 2 also includes a movable support 25, the positioning slide rail 221 is slidably connected to the movable support 25, and the movable support 25 is connected to the first alignment slider 252 with a first lifting member 251. In this embodiment, the storage cylinder 2 can slide into or out of the movable support 25 via the positioning slide rail 221, realizing the quick assembly and disassembly of the storage cylinder 2. The first lifting member 251 can adjust the height of the storage cylinder 2, which facilitates the adjustment of the relative position between the storage cylinder 2 and the pipe clamping mechanism 4, and facilitates precise positioning between the flange 50 and the pipe 5.

[0045] Reference Figure 1 and Figure 2The push plate 26 and the movable bracket 25 are connected by a first telescopic member 27 arranged along the axis of the limiting ring 21. In this embodiment, relative motion control between the push plate 26 and the movable bracket 25 is achieved. Specifically, the arrangement of the first telescopic member 27 allows the push plate 26 to be precisely adjusted in position along the axis of the limiting ring 21, thereby better cooperating with the pushing action of the flange 50 in the storage cylinder 2 and improving assembly accuracy and efficiency.

[0046] Reference Figure 1 and Figure 2 The outer ring 31 has an inner ring 32 coaxially rotatably connected to it, and the clamping member 33 is connected to the inner ring 32 by a second telescopic member 34. In this embodiment, by rotating the inner ring 32, the clamping member 33 is easily aligned with the slot 2201, which effectively improves the clamping accuracy of the flange 50.

[0047] Reference Figure 1 and Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 The outer ring 31 is connected to the second positioning slider 36 by a second lifting member 35. In this embodiment, the height adjustment function of the outer ring 31 relative to the frame 1 is realized. This facilitates the relative position of the pressure regulating member 33 and the pipe clamping mechanism 4, and makes it easier to accurately position the flange 50 and the pipe 5.

[0048] The implementation principle of a flange 50 assembly machine according to an embodiment of this application is as follows: The cooperation between frame 1 and pipe clamping mechanism 4 can stably fix the pipe 5 to be assembled, improving assembly accuracy. The design of storage cylinder 2, using the structure composed of limiting ring 21 and multiple arched plates 22, can effectively store and separate flanges 50, facilitating subsequent operations. The design of slot 2201 facilitates observation of the internal operation of storage cylinder 2, making it easier to maintain storage cylinder 2 and facilitating material retrieval by flange clamping moving mechanism 3. The push plate 26 can move on frame 1, thereby pushing flanges 50 in storage cylinder 2 to release one by one, improving material supply efficiency. In flange clamping moving mechanism 3, multiple pressing members 33 extend through the side wall of the flange 50 pressing plate of slot 2201. After the multiple pressing members 33 clamp and fix flanges 50, the outer ring 31 moves towards pipe clamping mechanism 4, fitting flanges 50 onto the pipe 5 to be assembled.

[0049] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flange assembly machine, characterized in that: It includes a frame (1), a pipe clamping mechanism (4), two storage cylinders (2) and two flange clamping and moving mechanisms (3), wherein the pipe clamping mechanism (4) is mounted on the frame (1); Along the length of the frame (1), two storage cylinders (2) are respectively located on both sides of the pipe clamping mechanism (4); each storage cylinder (2) includes a limiting ring (21) and a plurality of arched plates (22) arranged along the axial direction of the limiting ring (21). The arched plates (22) are arranged along the length of the frame (1), and the plurality of arched plates (22) are distributed circumferentially around the limiting ring (21); one end of the arched plate (22) away from the pipe clamping mechanism (4) is connected to the limiting ring (21), and a slot (2201) is formed between two adjacent arched plates (22); a push plate (26) is provided on the side of the limiting ring (21) away from the pipe clamping mechanism (4) and is movably connected to the frame (1). Two flange clamping and moving mechanisms (3) are correspondingly arranged with two storage cylinders (2); the flange clamping and moving mechanism (3) includes an outer ring (31) and a plurality of pressing members (33), the outer ring (31) is coaxial with the limiting ring (21), and the outer ring (31) can move toward the pipe clamping mechanism (4); the plurality of pressing members (33) are correspondingly arranged with a plurality of insertion slots (2201), and are retractably installed on the inner side of the outer ring (31) in the radial direction; The storage cylinder (2) also includes a first reinforcing ring (23) coaxial with the limiting ring (21), and the first reinforcing ring (23) is connected to a plurality of the arched plates (22); The inner diameter of the limiting ring (21) is smaller than the inner diameter of the inscribed circle of the plurality of arched plates (22); The inner diameter of the first reinforcing ring (23) is greater than or equal to the inner diameter of the inscribed circle of the arched plate (22); The holding member (33) is located on the side of the first reinforcing ring (23) away from the limiting ring (21).

2. The flange assembly machine according to claim 1, characterized in that: The arched plate (22) has a limiting block (24) at one end away from the limiting ring (21) and arranged along the radial direction of the limiting ring (21); the limiting block (24) is rotatably connected to the arched plate (22); The limiting block (24) has a first state and a second state. In the first state, the limiting block (24) is located inside the arch plate (22), and in the second state, the limiting block (24) is located outside the arch plate (22).

3. A flange assembly machine according to claim 2, characterized in that: The limiting pressure block (24) is connected to the arch plate (22) by a torsion spring (241).

4. A flange assembly machine according to claim 1, characterized in that: The frame (1) is provided with a positioning slide rail (11) along its length. The storage cylinder (2) is provided with a first positioning slider (252) that is slidably connected to the positioning slide rail (11). The outer ring (31) is provided with a second positioning slider (36) that is slidably connected to the positioning slide rail (11).

5. A flange assembly machine according to claim 4, characterized in that: The outer wall of the arched plate (22) is provided with a positioning slide rail (221) arranged along the axis of the limiting ring (21). The storage cylinder (2) also includes a movable bracket (25), the positioning slide rail (221) is slidably connected to the movable bracket (25), and the movable bracket (25) is connected to the first positioning slider (252) by a first lifting component (251).

6. A flange assembly machine according to claim 5, characterized in that: The push plate (26) and the movable bracket (25) are connected by a first telescopic member (27) arranged along the axis of the limiting ring (21).

7. A flange assembly machine according to claim 6, characterized in that: The outer ring (31) has an inner ring (32) that is coaxially rotatably connected to it, and the pressing member (33) is connected to the inner ring (32) by a second telescopic member (34).

8. A flange assembly machine according to claim 7, characterized in that: The outer ring (31) is connected to the second positioning slider (36) by a second lifting component (35).

9. A flange assembly machine according to claim 8, characterized in that: The pressure member (33) is equipped with a position sensor (37).

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