Anti-deformation pipe expanding tooling

Abstract

The utility model relates to pipe fitting flaring technical field, concretely is a kind of anti-deformation pipe fitting flaring tool, including base, clamping mechanism is arranged in base top, and supporting mechanism is arranged in one side of base top;Hydraulic rod two is installed in the other side of base top, and the movable end of hydraulic rod two is fixed with flaring head, and the support shell located in the outside of flaring head, the support shell is distributed with several groups of limit plate for preventing pipe mouth abnormal deformation or tearing in its circumferential direction;Adjusting mechanism is arranged on the support shell, and several groups of limit plate can be controlled to approach or away from flaring head.The utility model is locked after pipe fitting, drives flaring head to move towards the direction of pipe fitting, simultaneously, support shell and its inside limit plate also move, when flaring head enters pipe fitting and carries out flaring, the inner end of limit plate is tightly attached to the outer surface of flaring section, and the flaring part of pipe fitting will be constrained by limit plate, guarantee that the flaring part of pipe fitting does not occur abnormal deformation or tearing, improve the yield of flaring pipe fitting.

Description

Technical Field

[0001] This utility model relates to the field of pipe flaring technology, specifically to a flaring tool for anti-deformation pipe fittings. Background Technology

[0002] In the field of metal pipe manufacturing, with the acceleration of industrialization and the increasing diversification of market demand, the automatic flaring technology of metal pipes has become particularly important. This technology is an indispensable part of the pipe connection and assembly process, and it directly affects the sealing performance, stability and ultimate service life of the pipeline system.

[0003] Patent application number 202421490271.5 discloses a metal tube flaring device. Through a driving mechanism, the top core is driven to rotate, so that when the metal tube is in contact with the flaring, the top core and the inner wall of the metal tube always maintain relative rotation. The rotating top core can effectively prevent the metal tube from getting stuck on the top core. At the same time, it also makes the flaring deformation of the metal tube more uniform and optimizes the flaring quality of the metal tube. The auxiliary wheel can effectively reduce the frictional resistance when the rotating wheel rotates, and reduce noise and power loss.

[0004] However, when the aforementioned mandrel is used to flare the pipe fitting opening, the lack of restriction on the flaring section leads to a disordered flaring process, which may result in abnormal deformation or tearing. Therefore, a deformation-resistant pipe fitting flaring fixture is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a flaring tool for anti-deformation pipe fittings. When the flaring head enters the pipe fitting for flaring, the inner end of the limiting plate is tightly attached to the outer surface of the flaring section. The flaring part of the pipe fitting is constrained by the limiting plate, ensuring that the flaring part of the pipe fitting does not undergo abnormal deformation or tearing, thereby improving the yield of flared pipe fittings.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flaring fixture for anti-deformation pipe fittings, including a base, a clamping mechanism at the top of the base to prevent the pipe fitting from shifting during flaring, and a supporting mechanism on one side of the top of the base to hold one end of the pipe fitting in place. A hydraulic rod two is installed on the other side of the top of the base. The movable end of the hydraulic rod two is fixed with a bulging head for enlarging the other end of the pipe fitting, and a support shell located outside the bulging head. Several sets of limiting plates are distributed along the circumference of the support shell to prevent abnormal deformation or tearing of the pipe opening. The support shell is equipped with an adjustment mechanism that can control several sets of limiting plates to move closer to or further away from the flare opening, in order to accommodate pipes with various wall thicknesses.

[0007] Preferably, the clamping mechanism includes a lower clamping seat and a frame fixed to the top of the base, and a hydraulic rod is installed on the transverse part of the frame, with an upper clamping seat fixed to the movable end of the hydraulic rod.

[0008] Preferably, the opposite end faces of the lower clamp and the upper clamp are provided with arc-shaped grooves that are adapted to the outer wall of the pipe.

[0009] Preferably, the supporting mechanism includes an electric push rod installed on the top of the base, and a supporting plate is fixed to the movable end of the electric push rod.

[0010] Preferably, the adjustment mechanism includes a movable rod fixed to the middle of the outer end of the limiting plate, the other end of the movable rod sliding through the support shell, and a ball bearing installed through a round seat, and a spring sleeved between the movable rod and the round seat and the support shell.

[0011] Preferably, two sets of electric actuators are installed on both sides of the closed end of the support shell, and the movable ends of the two sets of electric actuators are fixed with the same limiting ring, the wall thickness of the limiting ring changing in a gradient.

[0012] Preferably, the adjustment mechanism includes a movable frame, the inner end of which slides through the support shell and is fixed to the outer end of the limiting plate, and at least one lead screw is threadedly installed on the movable frame, the inner end of which is rotatably installed with the outer end of the support shell, and a locking nut is threadedly connected to the outer wall of the lead screw to lock it to the movable frame.

[0013] This utility model provides a flaring tool for anti-deformation pipe fittings, which has the following advantages compared with the prior art: 1. This utility model is equipped with a shell and several sets of limiting plates. After the pipe fitting is locked, the drive flaring head moves towards the pipe fitting. At the same time, the support shell and the limiting plates inside it also move. When the flaring head enters the pipe fitting to flare, the inner end of the limiting plate is tightly attached to the outer surface of the flared section. The flared part of the pipe fitting will be constrained by the limiting plate, ensuring that the flared part of the pipe fitting does not undergo abnormal deformation or tearing, thereby improving the yield of flared pipe fittings.

[0014] 2. This utility model is equipped with an adjustment mechanism, which can control several sets of limiting plates to move closer to or further away from the flaring head, thereby adjusting the distance between the limiting plates and the flaring head to adapt to the constraints of pipe fittings with various wall thicknesses and better meet actual usage needs. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the flaring tooling structure in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the flaring tool from another perspective in Embodiment 1 of this utility model; Figure 3This is a schematic diagram of the expansion joint and adjustment mechanism in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the expansion joint and adjustment mechanism from another perspective in Embodiment 1 of this utility model; Figure 5 This is a cross-sectional view of the supporting shell structure in Embodiment 1 of this utility model; Figure 6 This is a side view of the adjustment mechanism structure in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the structure in Embodiment 2 of this utility model; Figure 8 This is a schematic diagram of the adjustment mechanism structure in Embodiment 2 of this utility model; Figure 9 This is a cross-sectional view of the support shell structure in Embodiment 2 of this utility model.

[0016] In the diagram: 1-base, 2-clamping mechanism, 3-supporting mechanism, 4-hydraulic rod 2, 5-expanding mouth, 6-limiting plate, 7-support shell, 8, 9-adjusting mechanism; 21-Frame, 22-Lower clamp, 23-Upper clamp, 24-Hydraulic rod one; 31-Electric push rod one, 32-Support plate; 81-Moving rod, 82-Spring, 83-Ball bearing, 84-Limit ring, 85-Electric push rod two; 91-Moving frame, 92-Screw, 93-Locking nut. Detailed Implementation

[0017] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] Example 1 Current flaring devices typically use a flaring rod slightly larger than the pipe opening size, which is forced into the pipe fitting to expand the opening. During this process, because there is no restriction on the outside of the pipe opening, the opening is prone to twisting or tearing when the flaring rod is forced in. Therefore, this embodiment provides a flaring fixture to prevent deformation of pipe fittings, such as... Figures 1-6 As shown, it includes a base 1, a clamping mechanism 2 on the top of the base 1 to prevent the pipe from shifting during flaring, and a supporting mechanism 3 on one side of the top of the base 1 to hold one end of the pipe.

[0019] The clamping mechanism 2 used includes a lower clamp 22 fixed to the top of the base 1 and a frame 21. A hydraulic rod 24 is installed on the horizontal part of the frame 21. An upper clamp 23 is fixed to the movable end of the hydraulic rod 24. By controlling the hydraulic rod 24, the upper clamp 23 can be moved vertically upward or downward. The opposite end faces of the lower clamp 22 and the upper clamp 23 are provided with arc-shaped grooves that are adapted to the outer wall of the pipe fitting.

[0020] When in use, place the pipe fitting to be flared into the arc-shaped groove of the lower clamp 22, and then drive the upper clamp 23 to move down to the appropriate position. This will clamp the pipe fitting between the upper clamp 23 and the lower clamp 22, preventing the pipe fitting from deflecting during flaring and causing deformation of the flaring.

[0021] The supporting mechanism 3 used includes an electric push rod 31 installed on the top of the base 1, and a supporting plate 32 is fixed to the movable end of the electric push rod 31.

[0022] When in use, after the clamping mechanism 2 clamps the pipe fitting, the electric push rod 31 is activated to drive the support plate 32 to move and abut against one end of the pipe fitting, thus holding the non-flared end of the pipe fitting in place and ensuring that the pipe fitting will not shift laterally during flaring, thereby further improving the stability during flaring.

[0023] In this embodiment, a hydraulic rod 4 is installed on the other side of the top of the base 1. The movable end of the hydraulic rod 4 is fixed with a reamer 5 for enlarging the other end of the pipe, and a support shell 7 located outside the reamer 5. Several sets of limiting plates 6 are distributed along the circumference of the support shell 7 to prevent abnormal deformation or tearing of the pipe opening.

[0024] During use, after locking the pipe fitting, the hydraulic rod 4 is activated, which moves the flaring head 5 toward the pipe fitting. At the same time, the support shell 7 and the limiting plate 6 inside it also move toward the pipe fitting. When the flaring head 5 enters the pipe fitting to flare, the inner end of the limiting plate 6 is tightly attached to the outer surface of the flared section. The flared part of the pipe fitting is constrained by the limiting plate 6, ensuring that the flared part of the pipe fitting does not undergo abnormal deformation or tearing, thus improving the yield of flared pipe fittings.

[0025] Since the wall thickness of some types of pipe fittings varies, the distance between the limiting plate 6 and the flared opening 5 also needs to be changed accordingly to ensure that the inner end of the limiting plate 6 is closely constrained to the outer surface of the pipe fitting. The following solution is provided to solve the limiting constraint problem when the pipe fitting wall thickness is different: An adjustment mechanism 8 is provided on the support shell 7, which can control several sets of limiting plates 6 to move closer to or further away from the flared opening 5 to accommodate pipe fittings of various wall thicknesses. The adjustment mechanism 8 includes a movable rod 81 fixed to the middle of the outer end of the limiting plate 6. The other end of the movable rod 81 slides through the support shell 7 and is fitted with a ball bearing 83 via a round seat. A spring 82 is sleeved between the movable rod 81 and the round seat and the support shell 7. Two sets of electric actuators 85 are installed on both sides of the closed end of the support shell 7. The movable ends of the two sets of electric actuators 85 are fixed with the same limiting ring 84, the wall thickness of which varies in a gradient. Figure 5 Based on the reference to determine the up, down, left, and right orientation, start the electric actuator 85, which can drive the limit ring 84 to move to the left or right.

[0026] During use, adjustments can be made in advance according to the pipe wall thickness. Taking a thinner wall as an example, the distance between the limiting plate 6 and the flaring head 5 needs to be reduced. The limiting ring 84 is controlled to move to the left. As the ball 83 contacts the inner wall of the limiting ring 84 and continuously squeezes the ball 83 inward, it then squeezes the moving rod 81 inward, which can drive the limiting plate 6 to move inward closer to the flaring head 5, thus reducing the distance between the limiting plate 6 and the flaring head 5. The reverse operation can increase the distance between the limiting plate 6 and the flaring head 5 to accommodate thicker pipes and better meet the actual use requirements.

[0027] Example 2 Basically the same as in Example 1, such as Figures 7-9 As shown, the difference lies in that: the adjusting mechanism 9 includes a movable frame 91, the inner end of which slides through the support shell 7 and is fixed to the outer end of the limiting plate 6, and at least one lead screw 92 is threadedly installed on the movable frame 91, the inner end of which is rotatably installed with the outer end of the support shell 7, and a locking nut 93 is threadedly connected to the outer wall of the lead screw 92 to lock it to the movable frame 91. Figure 9 To determine the vertical and horizontal orientation, adjustments can be made in advance based on the pipe wall thickness. Taking a thinner wall as an example, the distance between the limiting plate 6 and the flared end 5 needs to be reduced. Rotate the screw 92 to move the limiting plate 6 inward to the appropriate position, and then tighten the locking nut 93. Repeat the above steps to adjust the position of other limiting plates 6 in the same way. Compared with the adjustment mechanism 8 in Embodiment 1, it is more cumbersome to operate, but the cost is lower.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flaring fixture for anti-deformation pipe fittings, comprising a base (1), characterized in that: The base (1) is provided with a clamping mechanism (2) to prevent the pipe from shifting when it is flared, and a support mechanism (3) to hold one end of the pipe is provided on one side of the top of the base (1). Hydraulic rod 2 (4) is installed on the other side of the top of the base (1). The movable end of the hydraulic rod 2 (4) is fixed with an expansion head (5) for expanding the hole at the other end of the pipe fitting, and a support shell (7) located outside the expansion head (5). Several sets of limiting plates (6) are distributed along its circumference inside the support shell (7) to prevent abnormal deformation or tearing of the pipe opening. The support shell (7) is provided with an adjustment mechanism (8, 9) that can control several sets of limiting plates (6) to move closer to or further away from the expansion opening (5) to accommodate pipes with various wall thicknesses.

2. The anti-deformation pipe fitting flaring fixture according to claim 1, characterized in that: The clamping mechanism (2) includes a lower clamp (22) fixed to the top of the base (1) and a frame (21). A hydraulic rod (24) is installed on the transverse part of the frame (21), and an upper clamp (23) is fixed to the movable end of the hydraulic rod (24).

3. The anti-deformation pipe fitting flaring fixture according to claim 2, characterized in that: The lower clamp (22) and the upper clamp (23) have arc-shaped grooves on their opposite end faces that are adapted to the outer wall of the pipe fitting.

4. The anti-deformation pipe fitting flaring fixture according to claim 1, characterized in that: The supporting mechanism (3) includes an electric push rod (31) installed on the top of the base (1), and a supporting plate (32) is fixed to the movable end of the electric push rod (31).

5. The anti-deformation pipe fitting flaring fixture according to claim 1, characterized in that: The adjustment mechanism (8) includes a movable rod (81) fixed to the middle of the outer end of the limiting plate (6). The other end of the movable rod (81) slides through the support shell (7) and is fitted with a ball (83) through a round seat. A spring (82) is sleeved between the movable rod (81) and the support shell (7).

6. The anti-deformation pipe fitting flaring fixture according to claim 5, characterized in that: Two sets of electric actuators (85) are installed on both sides of the closed end of the support shell (7). The movable ends of the two sets of electric actuators (85) are fixed with the same limiting ring (84), and the wall thickness of the limiting ring (84) varies in a gradient.

7. The anti-deformation pipe fitting flaring fixture according to claim 1, characterized in that: The adjustment mechanism (9) includes a movable frame (91), the inner end of which slides through the support shell (7) and is fixed to the outer end of the limiting plate (6). At least one lead screw (92) is threaded on the movable frame (91), the inner end of which is rotatably installed with the outer end of the support shell (7), and a locking nut (93) is threaded on the outer wall of the lead screw (92) to lock it to the movable frame (91).

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