Flange flanging device

Abstract

The utility model provides a flange flanging device. The flange flanging device comprises an expansion mechanism and a flanging mechanism. The main body of the expansion mechanism is of an umbrella-shaped structure, and an arc-shaped expansion plate is arranged on the periphery; the expansion mechanism is inserted into the pipeline, so that the umbrella framework is opened to tightly support the inner wall of the pipeline by the arc-shaped expansion plate, and the whole device is fixed at the head of the pipeline; the main body of the flanging mechanism is also of an umbrella-shaped structure, a turning plate is arranged on the periphery of the flanging mechanism, the turning plate is turned out of the pipeline when the umbrella framework is unfolded, the head of the pipeline is stressed to be flanged outwards, and a flange shape is formed. The flange flanging device has the advantages that the whole flange flanging operation can be completed by one operator, manpower is saved, and the operation process is simplified; when flange flanging is carried out, the multiple expansion plates abut against the inner wall of the pipeline, and the head of the pipeline can be prevented from collapsing in the flanging process; due to the fact that the expansion mechanism and the flanging mechanism are each of an umbrella-shaped structure, the flange flanging device can be suitable for flange flanging of pipelines with different pipe diameters.

Description

Technical Field

[0001] This application belongs to the field of pipeline processing technology, specifically relating to a flange flanging device. Background Technology

[0002] During the construction of water supply and drainage pipelines, multiple pipes need to be fixedly connected to form a pipeline of a certain length. For pipes made of thermoplastic materials such as PVC-U, the connection often requires on-site fabrication of flanges at the pipe ends before connecting the two pipes. This process of fabricating flanges at the pipe ends is called flange flanging.

[0003] Current flange flanging procedures involve first heating the pipe head to make it malleable, then using various tools to expand and flanging the pipe head to form a flange shape. These existing procedures have the following drawbacks:

[0004] 1. During construction, the pipe loses its plasticity after heating. When the pipe head is turned over, it is easy for the pipe head to collapse inward, causing the pipe to deform. The flange shape formed by the turning over is irregular, which also affects the water flow performance of the pipe.

[0005] 2. When flange flanging is performed on the ground, multiple construction workers (4-6 people) are required to operate simultaneously, resulting in low work efficiency;

[0006] 3. When flange flanging is carried out underground, the limited space makes it difficult to accommodate multiple people to operate at the same time, making construction difficult. At the same time, the pipe head needs to be heated before flange flanging, which can easily burn the operators in the confined space underground. Utility Model Content

[0007] The purpose of this application is to overcome the defects.

[0008] To achieve the above objectives, this application proposes a flange flanging device, comprising:

[0009] The tensioning mechanism 1 is used to insert into the pipe, tighten the inner wall of the pipe, and fix the entire device at the head of the pipe.

[0010] Flanging mechanism 2 is used to fold the pipe head outwards to form a flange shape.

[0011] The characteristic feature is that the tensioning mechanism 1 includes:

[0012] The central shaft 4 is a cylindrical structure with external threads on its cylindrical surface;

[0013] The effort-saving lever structure is fixed at the top of the central shaft 4. When the effort-saving lever structure is rotated, the central shaft 4 is driven to rotate.

[0014] The annular cylindrical connecting shaft 10 is sleeved on the central shaft 4 near the bottom; the outer side of the cylindrical surface of the connecting shaft 10 has external threads.

[0015] The fixed disk 6, which has a disc-shaped structure, has a through hole in the center and is fitted onto the central shaft 4 and fixedly connected to the bottom of the connecting shaft 10. Below the fixed disk 6, along the radial direction of the disk, there are several guide rails 11 from the inside to the outside. Each guide rail 11 is provided with a slider 7. The guide rails 11 restrict the slider 7 to move back and forth only along the radial direction of the fixed disk 6.

[0016] The first bone seat 9, which has an annular columnar structure, has an internal thread and is threaded to the central shaft 4 at the bottom of the central shaft 4; the outer side of the cylindrical surface of the first bone seat 9 is evenly spaced and connected to one end of several first connecting rods 8; the first bone seat 9 and several first connecting rods 8 form the first umbrella frame structure 15.

[0017] Several expansion plates 5, whose main body is an arc-shaped plate structure, are evenly distributed on the outer periphery of the expansion mechanism 1; a rib plate 12 protrudes from the arc-shaped concave surface of the expansion plate 5 and is perpendicular to the concave surface; the rib plate 12 is pin connected to one end of the first connecting rod 8; the rib plate 12 has a horizontal platform 13; the platform 13 is fixedly connected to the slider 7; the top of the expansion plate 5 also has a pin lug 14; the arc-shaped convex surface of the expansion plate 5 has an arc similar to the inner wall of the pipe to be treated;

[0018] The flanging mechanism 2 includes:

[0019] The main body of the dial wheel 16 is a ring-shaped column structure with internal threads. It is sleeved on the top of the connecting shaft 10 and threadedly connected to the connecting shaft 10. Multiple handles for easy rotation are provided on the outer side of the main body of the dial wheel 16.

[0020] A second umbrella frame structure 17 is provided below the dial 16; the second umbrella frame structure 17 includes a second frame 18 and multiple second connecting rods 20; the second frame 18 is a ring-shaped columnar structure, which is sleeved on the connecting shaft 10; the outer side of the columnar surface of the second frame 18 is evenly spaced and connected to one end of several second connecting rods 20 by pins.

[0021] Several flat flaps 19 are evenly distributed on the outer periphery of the flange mechanism 2; the side of the flap 19 away from the central axis 4 is flat; the other side of the flap 19 has a boss 21 in the middle; the upper part of the middle of the boss 21 is pin-connected to one end of the second connecting rod 20; the bottom of the boss 21 has a through hole, which is pin-connected to the pin lug 14 on the tension plate 5.

[0022] The number of guide rail 11, slider 7, first connecting rod 8, tension plate 5, second connecting rod 20 and flap 19 are the same.

[0023] As an improvement to the above-mentioned device, the device further includes a sleeve 22; the sleeve 22 is a cylindrical structure with a bottom, and its outer diameter is slightly smaller than the inner diameter of the pipe to be processed.

[0024] As an improvement to the above-mentioned device, the sleeve 22 is made of rubber material.

[0025] As an improvement to the above-mentioned device, the device further includes a plurality of fixed columns 23; the fixed columns 23 are made of rigid material and are fixed on the fixed plate 6 at uniform intervals with the central axis 4 as the center.

[0026] As an improvement to the above-mentioned device, the force-saving lever structure is a rotating wheel or consists of multiple handles.

[0027] As an improvement to the above-mentioned device, the number of the guide rail 11, slider 7, first connecting rod 8, tension plate 5, second connecting rod 20 and flap 19 is 5-8.

[0028] Compared with existing technologies, the advantages of this application are:

[0029] 1. The flange flanging device provided in this application allows one operator to complete the entire flange flanging operation, saving manpower and simplifying the operation process;

[0030] 2. When flanges are being flanged, multiple expansion plates press tightly against the inner wall of the pipe to prevent the pipe head from collapsing during the flange-flanging process.

[0031] 3. Since both the expansion mechanism and the flange-flanging mechanism adopt an umbrella-frame structure, this device can adapt to flange-flanging of pipes with different diameters. Attached Figure Description

[0032] Figure 1 The diagram shown is a structural diagram of the flange flange device according to Embodiment 1 of this application;

[0033] Figure 2 The diagram shown is a structural diagram of the expansion mechanism of the flange flange device according to Embodiment 1 of this application;

[0034] Figure 3 The diagram shown is a structural diagram of the expansion mechanism of the flange flange device according to Embodiment 1 of this application. To facilitate observation of its internal structure, three expansion plates are hidden in this diagram.

[0035] Figure 4 The diagram shown is a structural diagram of the fixed plate of the flange flange device according to Embodiment 1 of this application;

[0036] Figure 5 The image shows the first umbrella frame structure of the flange flange device according to Embodiment 1 of this application;

[0037] Figure 6 The diagram shown is a connection diagram between the expansion plate and the first umbrella frame mechanism of the flange flange device in Embodiment 1 of this application;

[0038] Figure 7The image shows the arc-shaped convex surface of the expansion plate of the flange flange device according to Embodiment 1 of this application;

[0039] Figure 8 The diagram shown is a structural diagram of the flange flanging mechanism of the flange flanging device according to Embodiment 1 of this application;

[0040] Figure 9 The diagram shown is a structural diagram of the connection between the second connecting rod and the flap plate of the flange flange device in Embodiment 1 of this application; for ease of observation, the two flap plates are hidden in this diagram;

[0041] Figure 10 The diagram shown is a structural diagram of the connection between the flapper and the expansion plate of the flange flange device according to Embodiment 1 of this application;

[0042] Figure 11 The diagram shown is a schematic diagram of the combination of the sleeve with the tightening mechanism and the flanging mechanism in Embodiment 2 of this application;

[0043] Figure 12 The diagram shown is a connection structure diagram of the fixing column and the fixing plate in Embodiment 3 of this application. To facilitate observation of the installation position of the fixing column, the two expansion plates, all the flaps, and the first connecting rod are hidden in this diagram.

[0044] Figure label:

[0045] 1. Tensioning mechanism 2. Flanging mechanism

[0046] 3. Rotary wheel 4. Central shaft

[0047] 5. Tensioning plate 6. Fixing plate

[0048] 7. Slider 8. First connecting rod

[0049] 9. First bone seat; 10. Connecting shaft

[0050] 11. Guide rail 12. Rib plate

[0051] 13. Platform 14. Earring

[0052] 15. First umbrella frame structure 16. Dial wheel

[0053] 17. Second umbrella frame structure 18. Second frame

[0054] 19. Flip-up plate 20. Second linkage

[0055] 21. Boss 22 sleeve

[0056] 23. Fixed column Detailed Implementation

[0057] The technical solution of this application will be described in detail below with reference to the accompanying drawings.

[0058] like Figure 1 As shown, the flange flanging device provided in this application includes a tightening mechanism 1 and a flanging mechanism 2.

[0059] The tensioning mechanism 1 is used to insert into the pipe, tighten the inner wall of the pipe, and fix the entire device at the head of the pipe.

[0060] The flange mechanism 2 is used to flange the pipe head outwards, so that the pipe head forms a flange shape.

[0061] like Figure 2 and Figure 3 (To facilitate observation of the internal structure of the tensioning mechanism) Figure 3 As shown in the figure (which conceals three tensioning plates), the tensioning mechanism 1 includes:

[0062] The central shaft 4 is a cylindrical structure with external threads on its cylindrical surface.

[0063] Rotating wheel 3 is fixed to the top of the central shaft 4. Rotating rotating wheel 3 drives the central shaft 4 to rotate. Rotating wheel 3 can be disc-shaped, or it can be replaced with a handle shape such as a straight line or a cross, as long as it is easy to rotate. For ease of description, the following will use... Figure 2 With the position of the central device as a reference, the direction of the rotating wheel 3 is the top or upper part, and the opposite direction is the bottom or lower part.

[0064] The connecting shaft 10 is a ring-shaped cylindrical structure, sleeved on the central shaft 4 near the bottom. The connecting shaft 10 can move axially along the central shaft 4. The outer surface of the connecting shaft 10 has external threads for connection with the flanging mechanism 2 (see reference). Figure 9 ).

[0065] The fixed disc 6 has a disc-shaped structure with a through hole in the center. It is fitted onto the central shaft 4 and fixedly connected to the bottom of the connecting shaft 10. The fixed disc 6 is as follows... Figure 4 As shown, the fixed disk 6 has several guide rails 11 running from the inside out along the radial direction of the disk.

[0066] Each guide rail 11 has a slider 7. The slider 7 is restricted by the guide rail 11 to move back and forth along the radius of the fixed disk 6.

[0067] like Figure 5 As shown, the first rib 9 and the first connecting rod 8 form the first umbrella frame structure 15. The first rib 9 is an annular columnar structure with internal threads, and is threaded to the central shaft 4 at the bottom. The outer side of the cylindrical surface of the first rib 9 is evenly spaced and connected to one end of several first connecting rods 8 by pins.

[0068] The main body of the tensioning plate 5 is an arc-shaped plate structure. For example... Figure 6As shown, a rib plate 12 protrudes perpendicularly to the concave surface of the expansion plate 5. The rib plate 12 is pin-connected to one end of the first connecting rod 8. The rib plate 12 has a horizontal platform 13, which is fixedly connected to the slider 7. The top of the expansion plate 5 also has a pin lug 14 for pin connection with the flanging mechanism 2 (see reference). Figure 10 ).like Figure 7 As shown, the arc-shaped convex surface of the expansion plate 5 has an arc similar to that of the inner wall of the pipe to be treated.

[0069] The number of guide rail 11, slider 7, first connecting rod 8 and tension plate 5 are the same, and 5-8 can be set as needed.

[0070] In use, the expansion mechanism 1 of the flange flanging device is inserted into the pipe, and the fixing plate 6 is fixed relative to the pipe. Rotating the rotating wheel 3 drives the central shaft 4 to rotate, and the first support 9, driven by the threaded connection, can move up and down along the central shaft 4. When the first support 9 moves upward, it causes the first connecting rod 8 to open, causing the slider 7 to move along the guide rail 11 away from the central shaft 4. The slider 7 then causes the expansion plate 5 to open. When the first support 9 moves downward, it causes the first connecting rod 8 to retract, causing the slider 7 to move along the guide rail 11 towards the central shaft 4. The slider 7 then causes the expansion plate 5 to contract. When the expansion plate 5 is open, its arc-shaped convex surface tightly supports the inner wall of the pipe to be treated, thus fixing the flange flanging device and preventing the pipe head from collapsing inward during flange flanging.

[0071] like Figure 8 As shown, the flanging mechanism 2 includes:

[0072] The dial 16 has a ring-shaped cylindrical structure with internal threads, and is fitted onto the top of the connecting shaft 10 and threadedly connected to the connecting shaft 10. Multiple handles for easy rotation are provided on the outer side of the dial 16 body.

[0073] A second umbrella frame structure 17 is provided below the dial 16. The second umbrella frame structure 17 includes a second frame 18 and multiple second connecting rods 20. The second frame 18 is a ring-shaped columnar structure, sleeved on the connecting shaft 10, and can move up and down along the axis of the connecting shaft 10. The outer side of the cylindrical surface of the second frame 18 is evenly spaced and connected to one end of several second connecting rods 20 by pins.

[0074] like Figure 9 As shown (for easy observation of the internal structure of the flanging mechanism), Figure 9 Two flaps are concealed; flap 19 has a flat plate structure. The side of flap 19 away from the central axis 4 is flat and used to compress the pipe head during flapping. The other side of flap 19 has a boss 21 in the center. The upper part of the middle of the boss 21 is connected to one end of the second connecting rod 20 by a pin. Figure 10As shown, the lower part of the boss 21 has a through hole, which can be connected to the pin lug 14 on the tensioning plate 5.

[0075] The number of second connecting rods 20 and flaps 19 is the same as the number of tension plates 5.

[0076] In use, after the tensioning mechanism 1 is fixed and tightened inside the pipe, the dial wheel 16 is rotated to lower it, pushing the second frame 18 down. Since the flap 19 is connected to the pin lug 14 on the tensioning plate 5 via the boss 21, and the tensioning plate 5 is fixed, the flap 19 cannot move downwards. Multiple second connecting rods 20 are pushed outwards, causing the flap 19 to flip away from the central axis 4 around the pin connected to the tensioning plate 5. During the flipping process, the flap 19 gradually changes from a vertical to a horizontal position.

[0077] The flange flanging process using the flange flanging device provided in this application is as follows: First, rotate the rotating wheel 3 and the dial wheel 16 to tighten the expansion plate 5 and the flanging plate 19. Figure 1 As shown; then, the expansion mechanism 2 is inserted into the pipe, and the distance between the upper edge of the expansion mechanism 2 and the end of the pipe is equal to the width of the flange to be flipped; the fixing plate 6 is fixed relative to the pipe; the rotating wheel 3 is rotated to open the expansion plate 5, which is pressed tightly against the inner wall of the pipe, so that the entire device is fixed relative to the pipe; the pipe head is heated to soften the pipe; the dial wheel 16 is rotated to open the flip plate 19 to the horizontal position, and the flip plate 19 presses the pipe head into the shape of a flange.

[0078] The flange flanging device provided in this application allows a single operator to complete the entire flange flanging operation, saving manpower and simplifying the process. During flange flanging, multiple expansion plates 5 press tightly against the inner wall of the pipe, preventing the pipe head from collapsing during the flanging process. Since both the expansion mechanism 1 and the flanging mechanism 2 adopt an umbrella-frame structure, this device can adapt to flange flanging of pipes with different diameters.

[0079] All components of the tensioning mechanism 1 and the flanging mechanism 2 are made of rigid materials.

[0080] In another embodiment of this application, the flange flanging device further includes a sleeve 22. The sleeve 22 is a cylindrical structure with a bottom, the outer diameter of which is slightly smaller than the inner diameter of the pipe to be processed, and can be inserted into the pipe and fit tightly against the inner wall of the pipe.

[0081] During operation, first insert the sleeve 22 into the pipe to be treated with the opening facing outward. The distance between the opening of the sleeve 22 and the end of the pipe is slightly greater than the width of the flange to be flipped. Rotate the rotating wheel 3 and the dial wheel 16 to tighten the expansion plate 5 and the flip plate 19. Place the tightened expansion mechanism 2 into the sleeve 22. Then, insert the expansion mechanism 2 into the pipe so that the distance between the upper edge of the expansion mechanism 2 and the end of the pipe is equal to the width of the flange to be flipped. Fix the fixing plate 6 relative to the pipe. Rotate the rotating wheel 3 to open the expansion plate 5 and squeeze the sleeve 22 so that the outer wall of the sleeve 22 is tightly pressed against the inner wall of the pipe, thereby fixing the entire device relative to the pipe. Heat the pipe head to soften the pipe. Rotate the dial wheel 16 to open the flip plate 19 to a horizontal position, and the flip plate 19 presses the pipe head into a flange shape.

[0082] The sleeve 22 is made of rubber, which can prevent the hard expansion plate 5 from damaging the inner wall of the pipe when it supports the inner wall of the pipe.

[0083] A schematic diagram of the combination of sleeve 22 with tensioning mechanism 1 and flanging mechanism 2 is shown below. Figure 11 As shown.

[0084] like Figure 12 As shown (for easy observation of the installation position of the fixing column), Figure 12 In another embodiment of this application, to ensure that the fixed plate 6 remains stationary during operation, multiple cylindrical fixing posts 23 are fixedly installed on the fixed plate 6. The fixing posts 23 are made of rigid material and are evenly spaced on the fixed plate 6 with the central shaft 4 as the center. During operation, other equipment (such as clamps) can be used to fix the fixing posts 23 to the pipes or external equipment, ensuring that the fixed plate 6 and the pipes do not change position.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application, and should all be covered within the scope of the claims of this application.

Claims

1. A flange flanging device, comprising: The tensioning mechanism (1) is used to insert into the pipe, tighten the inner wall of the pipe, and fix the entire device at the head of the pipe. The flange mechanism (2) is used to flange the pipe head outward so that the pipe head forms a flange shape. The characteristic feature is that the tensioning mechanism (1) comprises: The central shaft (4) is a cylindrical structure with external threads on its cylindrical surface; The force-saving lever structure is fixed at the top of the central shaft (4). When the force-saving lever structure is rotated, the central shaft (4) is driven to rotate. The connecting shaft (10) with a ring-shaped column structure is sleeved on the central shaft (4) near the bottom; the outer side of the cylindrical surface of the connecting shaft (10) has external threads; The fixed disk (6) with a disc-shaped structure has a through hole in the center and is fitted onto the central shaft (4) and fixedly connected to the bottom of the connecting shaft (10); the fixed disk (6) has several guide rails (11) from the inside to the outside along the radial direction of the disc; a slider (7) is set on each guide rail (11); the guide rail (11) restricts the slider (7) to move back and forth only along the radial direction of the fixed disk (6); The first bone seat (9) of the annular columnar structure has internal threads and is threaded to the central shaft (4) at the bottom of the central shaft (4); the outer side of the cylindrical surface of the first bone seat (9) is evenly spaced and pinned to one end of several first connecting rods (8); the first bone seat (9) and several first connecting rods (8) form the first umbrella frame structure (15). Several expansion plates (5) with an arc-shaped plate structure are evenly distributed on the outer periphery of the expansion mechanism (1); a rib plate (12) perpendicular to the concave surface protrudes from the arc-shaped concave surface of the expansion plate (5); the rib plate (12) is pin connected to one end of the first connecting rod (8); a horizontal platform (13) is provided on the rib plate (12); the platform (13) is fixedly connected to the slider (7); the top of the expansion plate (5) also has a pin ear (14); the arc-shaped convex surface of the expansion plate (5) has an arc similar to the inner wall of the pipe to be treated; The flange mechanism (2) includes: The main body of the dial wheel (16) is a ring-shaped columnar structure with internal threads. It is sleeved on the top of the connecting shaft (10) and threadedly connected to the connecting shaft (10). Multiple handles for easy rotation are provided on the outer side of the main body of the dial wheel (16). A second umbrella frame structure (17) is provided below the dial (16); the second umbrella frame structure (17) includes a second frame (18) and multiple second connecting rods (20); the second frame (18) is a ring-shaped column structure, which is sleeved on the connecting shaft (10); the outer side of the column surface of the second frame (18) is evenly spaced and connected to one end of several second connecting rods (20) by pins. Several flat flaps (19) are evenly distributed on the outer periphery of the flange mechanism (2); the side of the flap (19) away from the central axis (4) is flat; the other side of the flap (19) has a boss (21) in the middle; the upper part of the middle of the boss (21) is pin-connected to one end of the second connecting rod (20); the bottom of the boss (21) has a through hole, which is pin-connected to the pin lug (14) on the tensioning plate (5); The number of guide rail (11), slider (7), first link (8), tension plate (5), second link (20) and flap (19) is the same.

2. The flange flanging device according to claim 1, characterized in that, The device also includes a sleeve (22); the sleeve (22) is a cylindrical structure with a bottom, and its outer diameter is slightly smaller than the inner diameter of the pipe to be treated.

3. The flange flanging device according to claim 2, characterized in that, The sleeve (22) is made of rubber.

4. The flange flanging device according to claim 1, characterized in that, The device also includes several fixed columns (23); the fixed columns (23) are made of rigid material and are fixed on the fixed plate (6) at uniform intervals with the central axis (4) as the center.

5. The flange flanging device according to claim 1, characterized in that, The force-saving lever structure is a rotating wheel or consists of multiple handles.

6. The flange flanging device according to claim 1, characterized in that, The number of the guide rail (11), slider (7), first connecting rod (8), tension plate (5), second connecting rod (20) and flap (19) is 5-8.

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