Tube flanger

Abstract

This application discloses a pipe flanging device, relating to the field of pipe processing equipment technology. It includes an upper clamping plate and a lower clamping plate that can be joined together, and a flanging device. A fixed handle is provided below the lower clamping plate. Fastening bolts threaded to the fixed handle are provided through the upper and lower clamping plates. A placement hole for placing the pipe is provided between the upper and lower clamping plates. A rotating handle is rotatably provided at the end of the flanging device. Flanging protrusions corresponding to the pipe openings are provided at the ends of the upper and lower clamping plates located on the wall of the placement hole. A flanging head corresponding to the flanging protrusions is provided at the end of the flanging device away from the rotating handle. A guide radius is provided at the position of the flanging head corresponding to the pipe opening. The flanging head is aligned with the pipe opening at the position of the flanging protrusion. The guide radius effectively disperses the local pressure on the pipe opening during the flanging process, guiding the pipe opening along the flanging protrusion, preventing damage to the pipe opening, and improving the integrity of the pipe opening after flanging.

Description

Technical Field

[0001] This application relates to the field of pipe processing equipment technology, and in particular to pipe flangers. Background Technology

[0002] The connection of the ports of small plastic pipes is a critical step: in order to prevent the pipes from falling off or the medium from leaking when connected to components such as joints and interfaces, the pipe ports need to be flanged. By flanging, the port forms an outward-extending annular protrusion. This protrusion can form a mechanical limiting and sealing fit with the groove or sealing surface of the connector, which significantly improves the reliability and sealing of the connection.

[0003] Flanging is usually achieved by manually applying pressure to the pipe port using simple hand-held pressing tools such as flat-headed hammers or curved pressing blocks.

[0004] Regarding the aforementioned technologies, the inventors believe that manually using simple hand-held edge-pressing tools to flanging pipe ports relies on the operator's experience to control the flanging force and angle, resulting in low flanging accuracy and a tendency for ports to become skewed or wrinkled. Utility Model Content

[0005] The purpose of this application is to provide a pipe flanger to improve the problem of manually using simple hand-held edge-pressing tools to flange pipe ends. This method relies on the operator's experience to control the flanger force and angle, resulting in low flanger accuracy and problems such as port misalignment and wrinkles.

[0006] The pipe flanger provided in this application adopts the following technical solution: A pipe flanger includes an upper clamping plate and a lower clamping plate that can be joined together, and a flanger. A fixed handle is provided below the lower clamping plate. Fastening bolts that are threadedly connected to the fixed handle are provided through the upper and lower clamping plates. A placement hole for placing a pipe is opened between the upper and lower clamping plates. A rotating handle is rotatably provided at the end of the flanger. A flange protrusion corresponding to the pipe opening is provided at the end of the upper and lower clamping plates located on the wall of the placement hole. A flange head corresponding to the flange protrusion is provided at the end of the flanger away from the rotating handle. A guide radius is provided at the position of the flange head corresponding to the pipe opening.

[0007] By adopting the above technical solution, the operator can stably support the entire clamping plate assembly by holding the fixed handle, place the plastic pipe in the placement hole, and drive the upper clamping plate to move downward by tightening the fastening bolt, thereby achieving precise clamping of the pipe and improving the convenience and stability of pipe fixing. The flange protrusion can pre-limit the pipe port, and the pipe port will deviate when the flange head is in action, ensuring the accuracy of the flange position. The flange head is aligned with the pipe opening at the flange protrusion position. The guide radius of the flange head can effectively disperse the local pressure on the pipe port during the flange process, guide the pipe opening along the flange protrusion, prevent the pipe port from being scratched, cracked or other damage, and improve the integrity of the pipe port after flange. The rotating handle at the end of the flanger reduces the torque required for the operator to rotate the flanger by extending the lever arm, reducing labor intensity and realizing labor-saving flange operation.

[0008] Optionally, a plurality of placement holes are provided along the length of the upper and lower clamping plates, and each placement hole has a different diameter to accommodate pipes with different outer diameters.

[0009] By adopting the above technical solution, several placement holes of different diameters are set in the length direction of the upper and lower clamping plates, so that the same set of clamping plate assembly can be adapted to pipes of various outer diameters. There is no need to frequently replace the clamping plates according to different pipe diameters, which greatly reduces the time cost of clamp replacement and improves the versatility of the equipment.

[0010] Optionally, the end of the flange protrusion away from the upper and lower clamping plates is provided with an inclined flange working surface, and the flange working surface corresponds to the flange head.

[0011] By adopting the above technical solution, the inclined flanging working surface at the end of the flanging protrusion is adapted to the working surface of the flanging head, and the inclination angle of the two is consistent. The flanging head applies flanging force from the inside of the pipe port, and the flanging working surface supports the formed section of the pipe after flanging from the outside of the pipe port, preventing deformation problems such as wrinkles and skewing of the pipe port due to unilateral force. At the same time, the flanging working surface and the flanging head can evenly transmit the flanging force to the entire circumference of the pipe port, ensuring that the thickness of the flanged port is consistent and the surface is smooth after flanging, which significantly improves the flanging accuracy and appearance quality.

[0012] Optionally, the end of the flanging device away from the rotating handle is provided with an inclined protrusion, the flanging head is located at one end of the inclined protrusion and is located at an off-center position of the flanging device, and the guide radius of the flanging head is located at the lowest point of the inclined protrusion.

[0013] By adopting the above technical solution, the flanging head is set at the eccentric position of the inclined protrusion of the flanging machine, so that the flanging head can gradually apply flanging force to the pipe port during rotation, preventing the pipe port from cracking due to excessive instantaneous impact force. The guide radius is set at the lowest point of the inclined protrusion, which can make the initial contact position between the flanging head and the pipe port accurately aligned with the edge of the pipe port, preventing deformation of the flanging start section caused by the deviation of the initial contact position, ensuring the consistency and stability of the entire flanging process, and reducing the scrap rate of thin-walled pipes due to uneven stress.

[0014] Optionally, the flanging head is provided with a fixed bracket adapted to the inclined protrusion along the guide radius. The fixed bracket is connected to the flanging device along the side wall of the inclined protrusion. A fixed rod inserted into the flanging device is provided on the side of the guide radius away from the flanging head.

[0015] By adopting the above technical solution, the fixed bracket is connected to the flanging device along the inclined protruding side wall, which can limit the radial displacement of the flanging head; the fixed rod is inserted into the flanging device to further limit the axial displacement of the flanging head, ensuring that there is no relative movement between the flanging head and the flanging device during the flanging process, so that the torque applied by the operator can be completely transmitted to the flanging head, preventing insufficient flanging force caused by torque loss, while improving the service life of the flanging head and reducing the probability of equipment failure caused by loosening of the flanging head.

[0016] Optionally, the rotating handle has an annular groove, and the end of the flanging device away from the flanging head is provided with an elastic locking protrusion corresponding to the annular groove. The side of the elastic locking protrusion close to the inner wall of the annular groove is arranged in an arc shape.

[0017] By adopting the above technical solution, the annular groove of the rotating handle and the elastic locking protrusion of the flanging device cooperate to form a detachable and anti-detachment connection structure. The elastic locking protrusion can be inserted into the annular groove during assembly to realize the quick connection between the rotating handle and the flanging device. Moreover, the circumferential limiting function of the annular groove can prevent relative slippage between the rotating handle and the flanging device, ensuring stable torque transmission.

[0018] Optionally, guide posts are provided on the opposite sides of the upper and lower clamping plates, and guide holes adapted to the guide posts are provided on the upper and lower clamping plates.

[0019] By adopting the above technical solution, when the upper clamping plate moves downwards towards the lower clamping plate, the guide post can be inserted into the guide hole to limit the lateral displacement of the upper clamping plate, ensure that the placement hole axes of the upper and lower clamping plates are completely aligned, and prevent the pipeline from shifting after being placed in the placement hole due to clamping plate misalignment.

[0020] Optionally, the end of the fastening bolt away from the fixed handle is provided with a rotating handle position.

[0021] By adopting the above technical solution, operators can directly hold the rotating handle and tighten the fastening bolts by hand without the need for additional tools such as wrenches and screwdrivers, thus improving the efficiency of clamping operations.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Align the flange head with the pipe opening at the flange protrusion. The guide radius of the flange head can effectively disperse the local pressure on the pipe opening during the flange process, guide the pipe opening along the flange protrusion, prevent the pipe opening from being scratched, cracked or other damaged, and improve the integrity of the pipe opening after flange. 2. The inclined flanging working surface at the end of the flanging protrusion is adapted to the working surface of the flanging head, and the inclination angle of the two is consistent. The flanging head applies flanging force from the inside of the pipe port, and the flanging working surface supports the formed section of the pipe after flanging from the outside of the pipe port, preventing deformation problems such as wrinkles and skewing of the pipe port due to unilateral force. At the same time, the flanging working surface and the flanging head can evenly transmit the flanging force to the entire circumference of the pipe port, ensuring that the thickness of the flanged port is consistent and the surface is smooth after flanging. 3. The flanging head is positioned at the eccentric position of the inclined protrusion of the flanging machine, so that the flanging head can gradually apply flanging force to the pipe port during rotation, preventing the pipe port from cracking due to excessive instantaneous impact force. The guide radius is set at the lowest point of the inclined protrusion, which can ensure that the initial contact position between the flanging head and the pipe port is accurately aligned with the edge of the pipe port, preventing deformation of the flanging start section caused by the initial contact position deviation, and ensuring the consistency and stability of the entire flanging process. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the pipe flanger; Figure 2 This is a partial sectional view of the pipe clamping part of the pipe flanger; Figure 3 This is a partial sectional view of the pipe flanger; Figure 4 yes Figure 3 A magnified view of part A in the middle.

[0024] In the diagram, 1. Upper clamping plate; 11. Placement hole; 12. Flanging protrusion; 13. Flanging working surface; 14. Guide post; 2. Lower clamping plate; 21. Fixed handle; 22. Fastening bolt; 221. Rotating handle position; 23. Guide hole; 3. Flanging device; 31. Rotating handle; 311. Annular groove; 32. Flanging head; 33. Guide rounded corner; 331. Fixed rod; 34. Inclined protrusion; 35. Fixed bracket; 36. Elastic locking protrusion. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail below.

[0026] Pipe flanger, refer to Figure 1 and Figure 2 The device includes an upper clamping plate 1 and a lower clamping plate 2 that can be joined together, as well as a flanger 3. A fixed handle 21 is installed below the lower clamping plate 2. Corresponding positions of the upper clamping plate 1 and the lower clamping plate 2 have through holes for fastening bolts 22 to pass through. After passing through the through holes, the fastening bolts 22 are threadedly connected to the threaded holes on the fixed handle 21. The end of the fastening bolt 22 away from the fixed handle 21 is integrally formed with a rotating handle position 221. The outer surface of the rotating handle position 221 is provided with anti-slip texture. The operator can directly rotate the rotating handle position 221 by hand to drive the fastening bolt 22 to rotate, thereby driving the upper clamping plate 1 to move closer to the lower clamping plate 2.

[0027] Reference Figure 1 and Figure 2 Cylindrical guide posts 14 are provided on the opposite sides of the upper clamping plate 1 and the lower clamping plate 2. The two guide posts 14 are symmetrically distributed on both sides of the placement hole 11. The upper clamping plate 1 and the lower clamping plate 2 are provided with guide holes 23 that are adapted to the guide posts 14. When the upper clamping plate 1 moves downward, the guide posts 14 can be gradually inserted into the guide holes 23 to ensure that the upper clamping plate 1 and the lower clamping plate 2 are precisely aligned. The merging surfaces of the upper clamping plate 1 and the lower clamping plate 2 are provided with placement holes 11 for placing pipelines. Several placement holes 11 are provided along the length of the clamping plate. In this embodiment, there are four placement holes 11. The diameter of the four placement holes 11 increases sequentially to adapt to pipelines of different sizes and specifications. The end of the hole wall of each placement hole 11 is provided with a flange protrusion 12 integrally formed with the upper clamping plate 1 and the lower clamping plate 2. The end of the flange protrusion 12 away from the clamping plate is provided with an inclined flange working surface 13.

[0028] Reference Figure 1 , Figure 3 and Figure 4The flanging device 3 has a cylindrical structure with an inclined protrusion 34 at one end. The inclined protrusion 34 is integrally formed with the body of the flanging device 3. The flanging head 32 is located at an eccentric position on the inclined protrusion 34. A guide radius 33 is provided at the position of the flanging head 32 corresponding to the pipe opening. The guide radius 33 is located at the lowest point of the inclined protrusion 34 and can make precise contact with the edge of the pipe opening. An integrally formed fixing bracket 35 is provided along the guide radius 33 of the flanging head 32. The fixing bracket 35 is adapted to the inclined protrusion 34, and the end of the fixing bracket 35 is inserted into the flanging device 3 along the side wall of the inclined protrusion 34. At the same time, a fixing bracket inserted into the flanging device 3 is welded to the side of the guide radius 33 away from the flanging head 32. Rod 331 is used to fix the flanging head 32. The end of the flanging device 3 away from the flanging head 32 is also connected to a rotating handle 31. The inner wall of the rotating handle 31 is provided with an annular groove 311. The outer surface of the corresponding end of the flanging device 3 is provided with an integrally formed elastic locking protrusion 36. The side of the elastic locking protrusion 36 close to the inner wall of the annular groove 311 is set in an arc surface. When the rotating handle 31 is put into the end of the flanging device 3, the elastic locking protrusion 36 is locked into the annular groove 311 under the guidance of the arc surface, realizing a stable connection between the rotating handle 31 and the flanging device 3, so that the flanging device 3 can rotate independently relative to the rotating handle 31. When needed, the flanging device 3 can be removed and replaced with a flanging device 3 with a flanging head 32 of different diameters.

[0029] The implementation principle of this application embodiment is as follows: According to the outer diameter of the pipe to be flanged, select the placement hole 11 with the corresponding diameter between the upper clamping plate 1 and the lower clamping plate 2, and put one end of the pipe into the placement hole 11 so that the pipe end extends beyond the flange protrusion 12. Then, the operator holds the fixing handle 21 below the lower clamping plate 2 and tightens the fastening bolt 22 to move the upper clamping plate 1 closer to the lower clamping plate 2 to clamp the pipe. Then, the rotating handle 31 is put into the end of the flanger 3 away from the flange head 32. The operator holds the rotating handle 31 to align the flange head 32 with the pipe opening of the clamped pipe, so that the guide radius 33 of the flange head 32 corresponds to the pipe wall end. Then, the rotating handle 31 is slowly rotated, and the flanger 3 drives the eccentric flange head 32 to rotate around the pipe axis. The guide radius 33 of the flange head 32 applies uniform radial pressure to the inner wall of the pipe end. At the same time, the flange working surface 13 of the flange protrusion 12 provides support from the outside of the pipe, so that the pipe end gradually folds outward to form an annular flange. The guide radius 33 can effectively disperse the local pressure on the pipe port during the flanging process, guide the pipe opening along the flanging protrusion 12 to flanging, prevent damage to the pipe port, and improve the integrity of the pipe port after flanging.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pipe flanger, characterized in that: The device includes an upper clamping plate (1) and a lower clamping plate (2) that can be joined together, and a flanging device (3). A fixed handle (21) is provided below the lower clamping plate (2). Fastening bolts (22) that are threadedly connected to the fixed handle (21) are provided through the upper clamping plate (1) and the lower clamping plate (2). A placement hole (11) for placing the pipeline is opened between the upper clamping plate (1) and the lower clamping plate (2). A rotating handle (31) is rotatably provided at the end of the flanging device (3). A flanging protrusion (12) corresponding to the pipe opening is provided at the end of the upper clamping plate (1) and the lower clamping plate (2) located on the wall of the placement hole (11). A flanging head (32) corresponding to the flanging protrusion (12) is provided at the end of the flanging device (3) away from the rotating handle (31). A guide radius (33) is provided at the position of the flanging head (32) corresponding to the pipe opening.

2. The pipe flanger according to claim 1, characterized in that: The placement holes (11) are provided in a plurality of manner along the length of the upper clamping plate (1) and the lower clamping plate (2), and each placement hole (11) has a different diameter to accommodate pipes with different outer diameters.

3. The pipe flanger according to claim 2, characterized in that: The end of the flange protrusion (12) away from the upper clamping plate (1) and the lower clamping plate (2) is provided with an inclined flange working surface (13), and the flange working surface (13) corresponds to the flange head (32).

4. The pipe flanger according to claim 3, characterized in that: The flanging device (3) has an inclined protrusion (34) at one end away from the rotating handle (31). The flanging head (32) is located at one end of the inclined protrusion (34) and is located at an eccentric position of the flanging device (3). The guide radius (33) of the flanging head (32) is located at the lowest point of the inclined protrusion (34).

5. The pipe flanger according to claim 4, characterized in that: The flanging head (32) extends along the guide radius (33) and is provided with a fixing bracket (35) adapted to the inclined protrusion (34). The fixing bracket (35) is connected to the flanging device (3) along the side wall of the inclined protrusion (34). A fixing rod (331) is provided on the side of the guide radius (33) away from the flanging head (32) and inserted into the flanging device (3).

6. The pipe flanger according to claim 5, characterized in that: The rotating handle (31) has an annular groove (311), and the end of the flanging device (3) away from the flanging head (32) is provided with an elastic locking protrusion (36) corresponding to the annular groove (311). The side of the elastic locking protrusion (36) close to the inner wall of the annular groove (311) is arranged in an arc shape.

7. The pipe flanger according to claim 6, characterized in that: The upper clamping plate (1) and the lower clamping plate (2) are provided with guide posts (14) on their opposite sides, and the upper clamping plate (1) and the lower clamping plate (2) are provided with guide holes (23) that are adapted to the guide posts (14).

8. The pipe flanger according to claim 7, characterized in that: The end of the fastening bolt (22) away from the fixed handle (21) is provided with a rotating handle position (221).

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