Precision bending and straightening device for small bend radius pipe joints

Abstract

The utility model provides a kind of precision bending shaping device for small bend diameter pipe joint, including support seat, first clamping unit, second clamping unit, shaping mould, handle and abutting block;First clamping unit is connected in the front side of support seat and is used to clamp the first joint part on the one end of pipe joint, the rear end of shaping mould is rotatably connected with support seat, one end of handle is connected with the rear end of shaping mould and is circumferentially limited, arc-shaped groove for being partially embedded with pipe body part in pipe joint is arranged on the outer wall of shaping mould, second clamping unit is fixed in the side of shaping mould front end and is used to clamp the second joint part on the other end of pipe joint, clamping groove is arranged on abutting block, clamping groove is matched with the pipe body part between shaping mould and second clamping unit and is clamped, one side of abutting block is abutted on the limiting step on the outer wall of shaping mould, the other side of abutting block is abutted with the inner end of second joint part;The utility model can realize to the aviation pipe joint after production is completed and is shaped in advance.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe joint bending and shaping devices, and more specifically, to a precision bending and shaping device for small-diameter pipe joints. Background Technology

[0002] Aviation pipe fittings are connecting devices used to connect pipes in aircraft engines. Due to the special nature of their application, aviation pipe fittings require high precision. Existing aviation pipe fittings with curved shapes inevitably have certain dimensional deviations during the production process. That is, the relative angle between the two ends of the aviation pipe fitting will deviate from the required angle. Therefore, when connecting existing aviation pipe fittings to corresponding components in the aircraft, after one end of the aviation pipe fitting is connected to the interface on one component, the other end of the aviation pipe fitting will have assembly tolerances with the interface on another component. This leads to the disadvantage of inconvenient assembly of aviation pipe fittings. In addition, in order to overcome the tolerances during assembly, the aviation pipe fittings are bent, which can easily cause damage to the aviation pipe fittings. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a precision bending and shaping device for small-diameter pipe joints, which can pre-shape the aerospace pipe joints after production.

[0004] This utility model provides a precision bending and shaping device for small-diameter pipe joints, including a support base, a first clamping unit, a second clamping unit, a shaping mold, a handle, and a stop block. The first clamping unit is connected to the front side of the support base and is used to clamp the first joint portion on one end of the pipe joint. The rear end of the shaping mold is rotatably connected to the support base. The handle is located on the rear side of the support base, and one end of the handle is connected to the rear end of the shaping mold and circumferentially limited. The outer wall of the shaping mold is provided with an arc-shaped groove for fitting with the pipe body portion of the pipe joint. The second clamping unit is fixed to one side of the front end of the shaping mold and is used to clamp the second joint portion on the other end of the pipe joint. The stop block is provided with a slot, which engages with the pipe body portion located between the shaping mold and the second clamping unit. One side of the stop block abuts against the limiting step located on the outer wall of the shaping mold, and the other side of the stop block abuts against the inner end of the second joint portion.

[0005] This invention enables pre-shaping of aircraft pipe fittings after production, thereby avoiding assembly tolerances between the aircraft pipe fittings and the components to be connected when they are applied to aircraft. This facilitates the assembly of aircraft pipe fittings and prevents them from being damaged during assembly.

[0006] In one possible implementation, the first clamping unit includes a first clamping seat and a first clamping block; the first clamping seat is fixed on the support base, and the first clamping block is fastened to the first clamping seat by two first bolts, forming a first clamping groove between the first clamping block and the first clamping seat, and the first connector is clamped in the first clamping groove, with the two first bolts located on both sides of the first clamping groove respectively; by adopting this structure, when the first connector is placed between the first clamping block and the first clamping seat, and when the first bolts are tightened, the first connector can be clamped in the first clamping groove, thus achieving reliable clamping of the first connector.

[0007] In one possible implementation, the first clamping unit further includes a connecting block and a first mandrel; the connecting block is fixed to the bottom of the support base, one end of the first mandrel is fixed to the connecting block, and the other end of the first mandrel is inserted into the first connector and abuts against the inner wall of the first connector; with this structure, under the action of the first mandrel, since the other end of the first mandrel is inserted into the first connector and abuts against the inner wall of the first connector, it can achieve a supporting effect on the inner cavity of the first connector. Thus, when the first clamping block and the first clamping base clamp the first connector, the first mandrel can achieve a supporting effect on the inner cavity of the first connector, thereby preventing the first connector from being flattened. The connecting block can play a supporting role for the first mandrel.

[0008] In one possible implementation, the bottom of the support base is provided with a limiting groove, and the connecting block is engaged in the limiting groove and can move back and forth relative to the support base for adjustment. The connecting block is provided with two elongated holes that are symmetrical from left to right, each elongated hole extending from front to back, and a locking bolt is inserted into each elongated hole. The connecting block and the support base are fastened by the locking bolt. With this structure, when the locking bolt is loosened, the connecting block can move back and forth relative to the support base. At this time, the back and forth adjustment of the first core rod can be realized so that the position of the first core rod is adapted to the position of the first joint. After the position of the first core rod is adjusted, the locking bolt is tightened again to secure the connecting block and the support base. In addition, with the cooperation of the connecting block and the limiting groove, the left and right limits of the connecting block can be realized, so that when the connecting block is adjusted back and forth, the left and right position of the connecting block can be prevented from changing, that is, the left and right displacement of the first core rod can be prevented.

[0009] In one possible implementation, the front end of the connecting block is provided with a slot, and one end of the first mandrel is inserted into the slot. At least one nut threadedly connected to the first mandrel is sleeved on each side of the slot. The nuts on both sides of the slot are tightly abutted against the connecting block to secure one end of the first mandrel to the connecting block. With this structure, when the nut on either side of the connecting block is turned and moves away from the connecting block, one end of the first mandrel can be released from the fastening state with the connecting block. At this time, one end of the first mandrel can be disengaged from the slot, which has the advantage of easy disassembly of the first mandrel and the connecting block. In addition, when the nuts on both sides of the connecting block are turned and move along the axial direction of the first mandrel, the relative position of the first mandrel and the connecting block can change. At this time, the depth of the other end of the first mandrel inserted into the first connector can be adjusted so that the position of the first mandrel can be adapted to different types of first connectors.

[0010] In one possible implementation, the second clamping unit includes a second clamping seat and a second clamping block; the second clamping seat is fixed to one side of the front end of the forming mold, and the second clamping block is fastened to the second clamping seat by two second bolts. A second clamping groove is formed between the second clamping block and the second clamping seat. A sleeve is sleeved on the outside of the second joint, and the sleeve is clamped in the second clamping groove. The two second bolts are located on both sides of the second clamping groove. By using this second clamping unit, when the second joint is placed between the second clamping block and the second clamping seat, and when the second bolts are tightened, the second clamping groove can compress the sleeve. At this time, the sleeve can reliably clamp the second joint.

[0011] In one possible implementation, the outer end of the jacket is provided with several circumferentially spaced opening slots, and a clamping arm is formed between each two adjacent opening slots. All clamping arms are squeezed by the second clamping slot and clamped to the outer wall of the second connector. With this structure, when the second bolt is tightened so that the second clamping block moves closer to the second clamping seat, the second clamping slot can squeeze all the clamping arms on the jacket. At this time, all the clamping arms can be clamped to the outer wall of the second connector, thereby achieving reliable clamping of the second connector.

[0012] In one possible implementation, the second clamping unit further includes a second mandrel; one end of the second mandrel is inserted into the second connector and abuts against the inner wall of the second connector; by providing the second mandrel, after one end of the second mandrel is inserted into the second connector and abuts against the inner wall of the second connector, when the second clamping block and the second clamping seat clamp the second connector, the second mandrel can provide support for the inner cavity of the second connector, thereby preventing the second connector from being flattened.

[0013] In one possible implementation, the precision bending and shaping device further includes a support block and an adjusting bolt. The support block is fixed to the front side of the support base, and the threaded portion of the adjusting bolt passes through the support block and is threadedly connected to it. The threaded portion of the adjusting bolt abuts against the second clamping seat to limit the angle at which the handle drives the shaping die to rotate. With this structure, when the handle drives the shaping die and the second clamping unit to rotate so that the shaping die shapes the curvature of the tube body, the threaded portion of the adjusting bolt can ultimately abut against the second clamping seat to limit the angle at which the handle drives the shaping die to rotate. This allows control over the maximum rotation angle of the shaping die and the second clamping unit, thus preventing over-bending of the tube body or precisely shaping the tube body to the required curvature. In addition, when the adjusting bolt is rotated relative to the support block, it can cause axial displacement of the adjusting bolt relative to the support block and the second clamping unit, thereby changing the maximum rotation angle of the shaping die and the second clamping unit, thus adjusting the maximum shaping amount of the tube body by the shaping die.

[0014] In one possible implementation, the precision bending and shaping device further includes a connecting plate and a support column; the rear end of the support column is fixed to the support base, the front end of the support column is fixed to one end of the connecting plate, and the front end of the shaping die is rotatably connected to the other end of the connecting plate; by adopting this structure, the front end of the shaping die can be supported by the support column and the connecting plate, thereby ensuring the coaxiality of the shaping die when the handle drives the shaping die to rotate. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a first three-dimensional structural diagram of the pipe fitting after it has been assembled onto this utility model. Figure 3 A second three-dimensional structural diagram of the pipe fitting after it has been assembled onto this utility model; Figure 4 A third three-dimensional structural diagram of the pipe fitting after it has been assembled onto this utility model; Figure 5 This is a cross-sectional view of the pipe fitting after it has been assembled onto this utility model. Detailed Implementation

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0018] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] See Figures 1-5 As shown in the figure, this application discloses a precision bending and shaping device for small-diameter pipe fittings, including a support base 1, a first clamping unit 2, a second clamping unit 3, a shaping mold 4, a handle 5, and a stop block 6. The first clamping unit 2 is connected to the front side of the support base 1 and is used to clamp the first joint portion 71 on one end of the pipe fitting 7. The rear end of the shaping mold 4 is rotatably connected to the support base 1. The handle 5 is located on the rear side of the support base 1, and one end of the handle 5 is connected to the rear end of the shaping mold 4 and circumferentially limited. The outer wall of the shaping mold 4 is provided with an arc-shaped groove 41 for fitting into the pipe body portion 72 of the pipe fitting 7. The second clamping unit 3 is fixed to one side of the front end of the shaping mold 4 and is used to clamp the first joint portion 71 on one end of the pipe fitting 7. The second connector 73 on the other end of the clamping pipe connector 7 has a groove 61 on the abutment block 6. The groove 61 engages with the tube body 72 located between the shaping mold 4 and the second clamping unit 3. One side of the abutment block 6 abuts against the limiting step 42 on the outer wall of the shaping mold 4, and the other side of the abutment block 6 abuts against the inner end of the second connector 73. The rear end of the shaping mold is coaxially provided with a rotating shaft with an outer diameter smaller than that of the shaping mold. The rotating shaft passes through the shaft hole on the support base and is rotatably connected to the support base. A square post is provided in the middle of the rear end of the rotating shaft. The square post engages with the square hole on one end of the handle, so that the handle can reliably drive the shaping mold to rotate.

[0021] The first clamping unit 2 includes a first clamping seat 21 and a first clamping block 22. The first clamping seat 21 is fixed on the support seat 1, and the first clamping block 22 is fastened to the first clamping seat 21 by two first bolts 23. A first clamping groove 24 is formed between the first clamping block 22 and the first clamping seat 21. The first connector 71 is clamped in the first clamping groove 24, and the two first bolts 23 are located on both sides of the first clamping groove 24. With this structure, when the first connector is placed between the first clamping block and the first clamping seat, and when the first bolt is tightened, the first connector can be clamped in the first clamping groove, thus achieving reliable clamping of the first connector.

[0022] The first clamping unit 2 also includes a connecting block 25 and a first mandrel 26. The connecting block 25 is fixed to the bottom of the support base 1. One end of the first mandrel 26 is fixed to the connecting block 25, and the other end of the first mandrel 26 is inserted into the first connector 71 and adheres to the inner wall of the first connector 71. With this structure, under the action of the first mandrel, since the other end of the first mandrel is inserted into the first connector and adheres to the inner wall of the first connector, it can support the inner cavity of the first connector. Thus, when the first clamping block and the first clamping base clamp the first connector, the first mandrel can support the inner cavity of the first connector, thereby preventing the first connector from being flattened. The connecting block can support the first mandrel.

[0023] The bottom of the support base 1 is provided with a limiting groove 11. The connecting block 25 is engaged in the limiting groove 11 and can move back and forth relative to the support base 1 for adjustment. The connecting block 25 is provided with two elongated holes 251 that are symmetrical from left to right. Each elongated hole 251 extends from front to back, and a locking bolt 27 is inserted into each elongated hole 251. The connecting block 25 and the support base 1 are fastened by the locking bolt 27. With this structure, when the locking bolt is loosened, the connecting block can move back and forth relative to the support base. At this time, the back and forth adjustment of the first core rod can be realized so that the position of the first core rod is adapted to the position of the first joint. After the position of the first core rod is adjusted, the locking bolt is tightened again to secure the connecting block and the support base. In addition, with the cooperation of the connecting block and the limiting groove, the left and right limits of the connecting block can be realized, so that when the connecting block is adjusted back and forth, the left and right position of the connecting block can be prevented from changing, that is, the left and right displacement of the first core rod can be prevented.

[0024] The front end of the connecting block 25 is provided with a slot 252. One end of the first core rod 26 is inserted into the slot 252. At least one nut 28 threadedly connected to the first core rod 26 is sleeved on both sides of the slot 252. The nuts 28 on both sides of the slot 252 are tightly abutted against the connecting block 25 to secure one end of the first core rod 26 to the connecting block 25. With this structure, when the nut on either side of the connecting block is turned and moves away from the connecting block, one end of the first core rod can be released from the fastening state with the connecting block. At this time, one end of the first core rod can be disengaged from the slot, which has the advantage of easy disassembly of the first core rod and the connecting block. In addition, when the nuts on both sides of the connecting block are turned and move along the axial direction of the first core rod, the relative position of the first core rod and the connecting block can be changed. At this time, the depth of the other end of the first core rod inserted into the first connector can be adjusted so that the position of the first core rod can be adapted to different types of first connectors.

[0025] The second clamping unit 3 includes a second clamping seat 31 and a second clamping block 32. The second clamping seat 31 is fixed to one side of the front end of the forming mold 4. The second clamping block 32 is fastened to the second clamping seat 31 by two second bolts 33. A second clamping groove 34 is formed between the second clamping block 32 and the second clamping seat 31. A sleeve 35 is sleeved on the outside of the second joint 73. The sleeve 35 is clamped in the second clamping groove 34. The two second bolts 33 are located on both sides of the second clamping groove 34. By using this second clamping unit, when the second joint is placed between the second clamping block and the second clamping seat, and when the second bolts are tightened, the second clamping groove can squeeze the sleeve. At this time, the sleeve can reliably clamp the second joint.

[0026] The outer end of the sleeve 35 is provided with several circumferentially spaced opening slots 351, and a clamping arm 352 is formed between each two adjacent opening slots 351. All clamping arms 352 are clamped to the outer wall of the second joint 73 after being squeezed by the second clamping groove 34. With this structure, when the second bolt is tightened so that the second clamping block moves closer to the second clamping seat, the second clamping groove can squeeze all the clamping arms on the sleeve. At this time, all the clamping arms can be clamped to the outer wall of the second joint, thereby achieving reliable clamping of the second joint.

[0027] The second clamping unit 3 also includes a second mandrel 36; one end of the second mandrel 36 is inserted into the second connector 73 and is in contact with the inner wall of the second connector 73; by setting the second mandrel, after one end of the second mandrel is inserted into the second connector and is in contact with the inner wall of the second connector, when the second clamping block and the second clamping seat clamp the second connector, the second mandrel can achieve the supporting effect on the inner cavity of the second connector, thereby preventing the second connector from being flattened.

[0028] The precision bending and shaping device also includes a support block 81 and an adjusting bolt 82. The support block 81 is fixed to the front side of the support base 1. The threaded part of the adjusting bolt 82 passes through the support block 81 and is threadedly connected to the support block 81. The threaded part of the adjusting bolt 82 is used to abut against the second clamping seat 31 to limit the angle at which the handle 5 drives the shaping mold 4 to rotate. With this structure, when the handle drives the shaping mold and the second clamping unit to rotate so that the shaping mold shapes the curvature of the tube body, the threaded part of the adjusting bolt can finally abut against the second clamping seat to limit the angle at which the handle drives the shaping mold to rotate. This allows control of the maximum rotation angle of the shaping mold and the second clamping unit, thus avoiding over-bending of the tube body or precisely shaping the tube body to the required curvature. In addition, when the adjusting bolt is rotated relative to the support block, it can cause axial displacement of the adjusting bolt relative to the support block and the second clamping unit, thereby changing the maximum rotation angle of the shaping mold and the second clamping unit, thus adjusting the maximum shaping amount of the tube body by the shaping mold.

[0029] The precision bending and shaping device also includes a connecting plate 91 and a support column 92; the rear end of the support column 92 is fixed to the support base 1, the front end of the support column 92 is fixed to one end of the connecting plate 91, and the front end of the shaping mold 4 is rotatably connected to the other end of the connecting plate 91; by adopting this structure, the front end of the shaping mold can be supported by the support column and the connecting plate, so as to ensure the coaxiality of the shaping mold when the handle drives the shaping mold to rotate.

[0030] When using this invention to shape aviation pipe fittings, firstly, the other end of the first mandrel is inserted into the first connector portion of the pipe fitting, and a clamping sleeve is fitted onto the outside of the second connector portion. Then, the second mandrel is inserted into the second connector portion. Next, the pipe body portion of the pipe fitting is fitted into the arc-shaped groove on the shaping mold, and the first connector portion is supported on the first clamping seat, while the clamping sleeve is supported on the second clamping seat. Then, one end of the first mandrel is fixed to the connecting block. Next, the first clamping block is assembled to clamp the first connector portion onto the first clamping seat, and the second clamping block is assembled to clamp the clamping sleeve onto the second clamping seat. Finally, an abutment block is fitted onto the pipe body portion located between the shaping mold and the second clamping unit, with one side of the abutment block abutting against a limiting step located on the outer wall of the shaping mold. The other side of the abutment block abuts against the inner end of the second connector. Then, the shaping mold and the second clamping unit can be driven to rotate towards the side closer to the adjusting bolt by the handle. During the rotation of the shaping mold, the curvature of the tube body located at the arc groove can be shaped, thereby adjusting the angle of the second connector relative to the first connector. When the second clamp in the second clamping unit abuts against the screw of the adjusting bolt, the shaping of the pipe connector is completed. That is, by shaping the tube body located at the arc groove, the angle of the second connector relative to the first connector is adjusted. Thus, when the aviation pipe connector is applied to an aircraft, assembly tolerances between the aviation pipe connector and the component to be connected can be avoided. After the pipe connector is shaped, it can be removed from this utility model.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A precision bending and shaping device for small-diameter pipe fittings, characterized in that: The device includes a support base (1), a first clamping unit (2), a second clamping unit (3), a shaping mold (4), a handle (5), and a stop block (6). The first clamping unit (2) is connected to the front side of the support base (1) and is used to clamp the first connector part (71) on one end of the pipe connector (7). The rear end of the shaping mold (4) is rotatably connected to the support base (1). The handle (5) is located on the rear side of the support base (1). One end of the handle (5) is connected to the rear end of the shaping mold (4) and is circumferentially limited. The outer wall of the shaping mold (4) is provided with a part for contacting the pipe body in the pipe connector (7). The part (72) is partially fitted with an arc-shaped groove (41). The second clamping unit (3) is fixed on one side of the front end of the shaping mold (4) and used to clamp the second connector part (73) on the other end of the pipe connector (7). The abutment block (6) is provided with a slot (61). The slot (61) is engaged with the pipe body part (72) located between the shaping mold (4) and the second clamping unit (3). One side of the abutment block (6) abuts against the limiting step (42) located on the outer wall of the shaping mold (4). The other side of the abutment block (6) abuts against the inner end of the second connector part (73).

2. The precision bending and shaping device for small-diameter pipe joints according to claim 1, characterized in that: The first clamping unit (2) includes a first clamping seat (21) and a first clamping block (22); the first clamping seat (21) is fixed on the support seat (1), and the first clamping block (22) is fastened to the first clamping seat (21) by two first bolts (23). A first clamping groove (24) is formed between the first clamping block (22) and the first clamping seat (21), and the first joint (71) is clamped in the first clamping groove (24). The two first bolts (23) are located on both sides of the first clamping groove (24).

3. The precision bending and shaping device for small-diameter pipe joints according to claim 2, characterized in that: The first clamping unit (2) further includes a connecting block (25) and a first mandrel (26); the connecting block (25) is fixed to the bottom of the support base (1), one end of the first mandrel (26) is fixed to the connecting block (25), and the other end of the first mandrel (26) is inserted into the first connector (71) and abuts against the inner wall of the first connector (71).

4. The precision bending and shaping device for small-diameter pipe joints according to claim 3, characterized in that: The bottom of the support base (1) is provided with a limiting groove (11), and the connecting block (25) is engaged in the limiting groove (11) and can move back and forth relative to the support base (1) for adjustment; the connecting block (25) is provided with two elongated holes (251) that are symmetrical from left to right, each elongated hole (251) extends from front to back, and each elongated hole (251) is provided with a locking bolt (27), and the connecting block (25) and the support base (1) are fastened by the locking bolt (27).

5. The precision bending and shaping device for small-diameter pipe joints according to claim 3, characterized in that: The front end of the connecting block (25) is provided with a slot (252), and one end of the first core rod (26) is inserted into the slot (252). At least one nut (28) threadedly connected to the first core rod (26) is sleeved on both sides of the slot (252). The nuts (28) on both sides of the slot (252) are tightly abutted against the connecting block (25) to make one end of the first core rod (26) secure to the connecting block (25).

6. The precision bending and shaping device for small-diameter pipe joints according to claim 1, characterized in that: The second clamping unit (3) includes a second clamping seat (31) and a second clamping block (32); the second clamping seat (31) is fixed on one side of the front end of the forming mold (4), the second clamping block (32) is fastened to the second clamping seat (31) by two second bolts (33), a second clamping groove (34) is formed between the second clamping block (32) and the second clamping seat (31), a sleeve (35) is sleeved on the outside of the second joint (73), the sleeve (35) is clamped in the second clamping groove (34), and the two second bolts (33) are located on both sides of the second clamping groove (34).

7. The precision bending and shaping device for small-diameter pipe joints according to claim 6, characterized in that: The outer end of the sleeve (35) is provided with a number of circumferentially spaced opening slots (351), and a clamping arm (352) is formed between each two adjacent opening slots (351). All the clamping arms (352) are squeezed by the second clamping slot (34) and clamped to the outer wall of the second connector (73).

8. The precision bending and shaping device for small-diameter pipe joints according to claim 6, characterized in that: The second clamping unit (3) further includes a second mandrel (36); one end of the second mandrel (36) is inserted into the second connector (73) and is in contact with the inner wall of the second connector (73).

9. The precision bending and shaping device for small-diameter pipe joints according to claim 6, characterized in that: The precision bending and shaping device also includes a support block (81) and an adjusting bolt (82); the support block (81) is fixed to the front side of the support base (1), and the screw part of the adjusting bolt (82) passes through the support block (81) and is threadedly connected to the support block (81). The screw part of the adjusting bolt (82) is used to abut against the second clamp (31) to limit the angle at which the handle (5) drives the shaping mold (4) to rotate.

10. The precision bending and shaping device for small-diameter pipe joints according to claim 1, characterized in that: The precision bending and shaping device also includes a connecting plate (91) and a support column (92); the rear end of the support column (92) is fixed to the support base (1), the front end of the support column (92) is fixed to one end of the connecting plate (91), and the front end of the shaping mold (4) is rotatably connected to the other end of the connecting plate (91).

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