Flaring device for metal pipe

Abstract

The utility model discloses a flaring device for a metal pipe, which comprises a machine base, a lifting piece arranged above the machine base in a lifting manner, a flaring piece arranged at the bottom of the lifting piece, and a driving piece for driving the lifting piece to do lifting motion, the flaring piece comprises a connecting part with the upper end connected with the lifting piece and a flaring part connected to the lower end of the connecting part and conically shrunk downwards. The flaring device further comprises a limiting piece which is arranged on the machine base and coaxially arranged under the flaring piece, the limiting piece is cylindrical, the inner surface of the limiting piece comprises a conical section and a cylindrical section which are sequentially connected from top to bottom, the conical section is conically shrunk from top to bottom, and the diameter of the cylindrical section is the same as the minimum inner diameter of the conical section. And the taper of the conical section is the same as that of the flaring part. According to the flaring device for the metal pipe, it can be guaranteed that the metal pipe and the flaring piece are coaxially arranged all the time in the flaring process, the whole flaring end of the metal pipe deforms evenly, and the accuracy of test data is guaranteed.

Description

Technical Field

[0001] This utility model relates to a flaring device for metal pipes. Background Technology

[0002] Metal tubing, especially titanium alloy tubing used in high-pressure hydraulic systems for aviation, needs to undergo flaring tests to verify its flaring performance.

[0003] In existing technologies, the metal pipe to be flared is typically placed on a platform, and pressure is applied to one end using a conical mandrel to press the mandrel into the end of the pipe to flare it until the required outer diameter is achieved. During the pressure application process, it is difficult to ensure that the metal pipe and the conical mandrel remain coaxial, a problem particularly severe for smaller diameter pipes. Furthermore, it is difficult to guarantee uniform deformation of the flared end of the pipe, affecting the accuracy of the test data. Utility Model Content

[0004] The purpose of this invention is to provide a flaring device for metal pipes, which can ensure that the metal pipe is always coaxially set with the flaring component during the flaring process, so that the flared end of the metal pipe is deformed uniformly as a whole, and the accuracy of the test data is guaranteed.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A flaring device for metal pipes includes a base, a lifting component that is flexibly disposed above the base, a flaring component disposed at the bottom of the lifting component, and a driving component for driving the lifting component to perform lifting and lowering movements. The flaring component includes a connecting part whose upper end is connected to the lifting component, and a flaring part that is connected to the lower end of the connecting part and tapers downward.

[0007] The flaring device further includes a limiting member disposed on the base and coaxially arranged directly below the flaring member. The limiting member is cylindrical, and its inner surface includes a tapered segment and a cylindrical segment connected in sequence from top to bottom. The tapered segment tapers from top to bottom, and the diameter of the cylindrical segment is the same as the minimum inner diameter of the tapered segment.

[0008] The taper of the tapered section is the same as the taper of the flared portion.

[0009] Preferably, the base is provided with a limiting groove for downward insertion of the limiting member, and the inner surface shape of the limiting groove matches the outer surface shape of the limiting member.

[0010] Preferably, the limiting member is a split structure, which is composed of at least two split parts arranged circumferentially.

[0011] More preferably, the limiting member is cylindrical, and the split body is an arc-shaped cylinder with the same curvature.

[0012] Preferably, the maximum outer diameter of the flared portion is greater than or equal to the maximum inner diameter of the tapered segment.

[0013] Preferably, the driving component includes a lead screw disposed on the base and arranged along the lifting direction of the lifting component, a nut disposed on the lifting component and rotatable about its own axis, and a drive motor disposed on the lifting component for driving the nut to rotate, wherein the nut is sleeved on the lead screw.

[0014] More preferably, the base is provided with a guide shaft arranged along the lifting direction of the lifting member, and the lifting member is provided with a guide hole for the guide shaft to pass through.

[0015] More preferably, the guide shaft and the lead screw are respectively located on opposite sides of the flared part.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model, used for flaring devices of metal pipes, has the following advantages by setting a cylindrical limiting member:

[0017] When flaring, the metal tube is inserted into the cylindrical limiting component to ensure that the metal tube is always coaxial with the flaring component during the flaring process, so that the flared end of the metal tube deforms uniformly as a whole, thus ensuring the accuracy of the test data.

[0018] By setting a tapered section with the same taper as the flared section on the inner surface of the limiting component, it can cooperate with the flared section to flare the flared end of the metal pipe, further ensuring the uniform deformation of the flared end of the metal pipe as a whole, thereby further ensuring the accuracy of the test data. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the flaring device according to a specific embodiment of the present utility model;

[0020] Appendix Figure 2 For the appendix Figure 1 A front view of the middle limiting component;

[0021] Appendix Figure 3 For the appendix Figure 1 A side view of the middle limiting component;

[0022] Appendix Figure 4 For the appendix Figure 1 A top view of the structure of the middle limiting component.

[0023] The components are: 1. base; 2. lifting component; 3. flared component; 31. connecting part; 32. flared part; 4. driving component; 41. lead screw; 42. nut; 43. drive motor; 5. limiting component; 51. tapered section; 52. cylindrical section; 53. split part; 6. guide shaft. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "inner", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0031] See Figure 1 As shown, this embodiment provides a flaring device for metal pipes, including a base 1, a lifting member 2 that is flexibly disposed above the base 1, a flaring member 3 disposed at the bottom of the lifting member 2, and a driving member 4 for driving the lifting member 2 to perform lifting and lowering movements. The flaring member 3 includes a connecting part 31 connected to the lifting member 2 at its upper end and a flaring part 32 connected to the lower end of the connecting part 31 and tapering downwards.

[0032] In this embodiment, the connecting part 31 is cylindrical and the flared part 32 is conical, and the two are arranged with the same center line.

[0033] The flaring device also includes a limiting member 5 disposed on the base 1 and coaxially arranged directly below the flaring member 3. The limiting member 5 is cylindrical, and the inner surface of the limiting member 5 includes a tapered section 51 and a cylindrical section 52 connected in sequence from top to bottom. The tapered section 51 tapers from top to bottom, and the diameter of the cylindrical section 52 is the same as the minimum inner diameter of the tapered section 51. The two are connected inside the limiting member 5.

[0034] The inner diameter of the cylindrical section 52 is the same as the outer diameter of the metal pipe to be tested. When flaring, the metal pipe is inserted into the cylindrical limiting member 5, which can ensure that the metal pipe is always coaxially set with the flaring member 3 during the flaring process, so that the flared end of the metal pipe is uniformly deformed as a whole, and the accuracy of the test data is guaranteed.

[0035] The taper of the tapered section 51 is the same as that of the flared portion 32. By providing a tapered section 51 with the same taper as the flared portion 32 on the inner surface of the limiting member 5, it can cooperate with the flared portion 32 to flare the flared end of the metal pipe, further ensuring that the flared end of the metal pipe deforms uniformly, thereby further ensuring the accuracy of the test data. In this embodiment, the maximum outer diameter of the flared portion 32 is greater than or equal to the maximum inner diameter of the tapered section 51.

[0036] In actual operation, the limit component 5 can be replaced with one of different sizes according to the different diameters of the metal pipe.

[0037] In this embodiment, the base 1 is provided with a limiting groove for the downward insertion of the limiting member 5, and the inner surface shape of the limiting groove matches the outer surface shape of the limiting member 5. This structure can prevent the limiting member 5 from shifting when the metal tube is under pressure, further ensuring the coaxial arrangement of the metal tube and the flared part 3.

[0038] See Figure 2-4 As shown, the limiting member 5 has a split structure, consisting of at least two segments 53 arranged circumferentially. In this embodiment, the limiting member 5 is cylindrical, and the segments 53 are arc-shaped cylinders with the same curvature. Each segment 53 has two segments, each with a curvature of 180°. By setting this split structure, it is easy to remove the flared metal tube.

[0039] See Figure 1 As shown, the driving component 4 includes a lead screw 41 mounted on the base 1 and arranged along the lifting direction of the lifting component 2 (i.e., the vertical direction in the figure), a nut 42 rotatably mounted on the lifting component 2 about its own axis, and a drive motor 43 mounted on the lifting component 2 for driving the nut 42 to rotate. The nut 42 is sleeved on the lead screw 41. When the drive motor 43 drives the nut 42 to rotate through a transmission mechanism (not shown in the figure), the nut 42 moves up and down along the lead screw 41, thereby driving the lifting component 2 to move up and down along the lead screw 41.

[0040] In this embodiment, the base 1 is provided with a guide shaft 6 arranged along the lifting direction of the lifting member 2, and the lifting member 2 is provided with a guide hole for the guide shaft 6 to pass through. The guide shaft 6 is parallel to the lead screw 41. By providing the guide shaft 6, the rotation of the lifting member 2 during lifting motion can be prevented.

[0041] In this embodiment, the guide shaft 6 and the lead screw 41 are respectively located on opposite sides of the flared part 3. This structure can ensure the stability of the lifting part 2 during the lifting process.

[0042] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A flaring device for metal pipes, characterized in that: It includes a base, a lifting component that is vertically mounted above the base, a flared component at the bottom of the lifting component, and a driving component for driving the lifting component to perform lifting and lowering movements. The flared component includes a connecting part whose upper end is connected to the lifting component and a flared part that is connected to the lower end of the connecting part and tapers downward. The flaring device further includes a limiting member disposed on the base and coaxially arranged directly below the flaring member. The limiting member is cylindrical, and its inner surface includes a tapered segment and a cylindrical segment connected in sequence from top to bottom. The tapered segment tapers from top to bottom, and the diameter of the cylindrical segment is the same as the minimum inner diameter of the tapered segment. The taper of the tapered section is the same as the taper of the flared portion.

2. The flaring device for metal pipes according to claim 1, characterized in that: The base is provided with a limiting groove for downward insertion of the limiting member, and the inner surface shape of the limiting groove matches the outer surface shape of the limiting member.

3. The flaring device for metal pipes according to claim 1, characterized in that: The limiting member is a split structure, consisting of at least two split parts arranged circumferentially.

4. The flaring device for metal pipes according to claim 3, characterized in that: The limiting component is cylindrical, and the split body is an arc-shaped cylinder with the same curvature.

5. The flaring device for metal pipes according to claim 1, characterized in that: The maximum outer diameter of the flared portion is greater than or equal to the maximum inner diameter of the tapered segment.

6. The flaring device for metal pipes according to claim 1, characterized in that: The driving component includes a lead screw mounted on the base and arranged along the lifting direction of the lifting component, a nut mounted on the lifting component and rotatable about its own axis, and a drive motor mounted on the lifting component for driving the nut to rotate. The nut is sleeved on the lead screw.

7. The flaring device for metal pipes according to claim 6, characterized in that: The base is provided with a guide shaft arranged along the lifting direction of the lifting component, and the lifting component is provided with a guide hole for the guide shaft to pass through.

8. The flaring device for metal pipes according to claim 7, characterized in that: The guide shaft and the lead screw are respectively located on opposite sides of the flared part.

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