Tool for flaring end part of small pipe

Abstract

The utility model provides a tool for flaring the end part of a small pipe, which comprises an upper die, a lower die, a bottom plate and an ejector rod, and is characterized in that the bottom plate is fixed on a workbench; a through hole is formed in the middle of the bottom plate; the lower die is installed on the bottom plate and located over the through hole. The lower die is of a vertically-placed cylinder structure, and the upper end and the lower end of the lower die are open faces. The ejector rod can penetrate through the through hole from the lower part of the bottom plate to extend into the cylinder body of the lower die; a cushion block is arranged at the top of the ejector rod; the upper die is provided with a conical body used for pipe end flaring. The utility model has the advantages of simple structure, reusability, convenience in operation, stable forming effect and low manufacturing cost, and can meet the requirements of pipes with various lengths and the same size.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flaring tool, specifically relates to a tool for flaring the end of a small pipe. BACKGROUND

[0002] In mechanical manufacturing and processing, the port flaring process of small-diameter metal pipelines is a common processing requirement. The flaring process is mainly used for port forming before pipeline connection, such as forming a flared end, a flange or other specific shapes to ensure pipeline sealing, improve connection strength or adapt to different specifications of joints.

[0003] For small pipe flaring, it needs to meet the butt joint size, but due to the small size of the pipe, it is not suitable for large hydraulic equipment. Based on this, the utility model provides a tool for flaring the end of a pipe by manual operation. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of prior art, and provides a tool for flaring the end of a small pipe, which is realized by the following technical scheme:

[0005] A tool for flaring the end of a small pipe, comprising an upper die, a lower die, a base plate and a top rod, wherein:

[0006] The base plate is fixed on the workbench; a through hole is formed in the middle of the base plate;

[0007] The lower die is installed on the base plate and located directly above the through hole; the lower die is a vertically placed cylinder structure, and the upper and lower ends of the lower die are both open faces;

[0008] The top rod can pass through the through hole from below the base plate and extend into the cylinder interior of the lower die; a pad is arranged on the top of the top rod;

[0009] The upper die is provided with a conical body for pipe end flaring.

[0010] Optionally or preferably, the side surface of the base plate is provided with a mounting interface for connecting the base plate to the workbench.

[0011] Optionally or preferably, a plurality of threaded through holes are formed in the base plate; a plurality of threaded blind holes corresponding to the threaded through holes are formed in the cylinder wall of the lower die bottom; the lower die and the base plate are fixed by screwing.

[0012] Optionally or preferably, the number of threaded through holes and threaded blind holes is three, and the three threaded blind holes are equally arranged on the cylinder wall of the lower die bottom; the included angle between every two threaded blind holes is 120°.

[0013] Optionally or preferably, the upper die comprises an impact force transmission block and a cone body; the cone body is installed at the bottom of the impact force transmission block; the impact force transmission block is used for receiving impact force and transmitting the impact force to the cone body.

[0014] Based on the above technical scheme, the utility model provides a kind of tooling of small pipe end flaring, simple structure, reusable, can satisfy the same size pipe of multiple length, easy to operate, forming effect is stable, and manufacturing cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creative labor.

[0016] Figure 1 It is a front view (cross-sectional view) of the single-layer drying machine of the present application.

[0017] Figure 2 It is a top view of the bottom plate in the present application.

[0018] Figure 3 It is a front view (cross-sectional view) of the lower die in the present application.

[0019] Figure 4 It is a front view of the ejector rod in the present application.

[0020] Figure 5 It is a front view of the upper die in the present application.

[0021] Brief Description of the Drawings:

[0022] 1-upper die, 2-lower die, 3-bottom plate, 4-ejector rod, 5-through hole, 6-pad, 7-cone body, 8-mounting interface, 9-threaded hole, 10-threaded blind hole, 11-impact force transmission block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0024] In a preferred embodiment:

[0025] AsFigures 1-5 As shown in the drawings:

[0026] The embodiment provides a pipe end flaring tool, which comprises an upper die 1, a lower die 2, a base plate 3 and a top rod 4, wherein:

[0027] The base plate 3 is fixed on a workbench; a through hole 5 is formed in the middle of the base plate 3;

[0028] The lower die 2 is installed on the base plate 3 and located directly above the through hole 5; the lower die 2 is a vertically placed cylinder structure, and the upper end and the lower end of the lower die 2 are both open faces;

[0029] The top rod 4 can pass through the through hole from below the base plate 3 and extend into the cylinder body of the lower die 2; a pad 6 is arranged at the top of the top rod 4;

[0030] The upper die 1 is provided with a conical body 7 for pipe end flaring.

[0031] Further, in the embodiment, a mounting interface 8 is arranged on the side surface of the base plate 3, and the mounting interface 8 is used for connecting the base plate to the workbench. Figure 2 As shown in the drawings, the mounting interface 8 is a notch formed at the edge of the base plate 3; and the base plate 3 can be fixed on the workbench by screwing.

[0032] Further, in the embodiment, a plurality of threaded through holes are formed in the base plate 3; a plurality of threaded blind holes corresponding to the threaded through holes are formed in the cylinder wall at the bottom of the lower die 2; and the lower die 2 and the base plate 3 are fixed by screwing.

[0033] Further, in the embodiment, the number of the threaded through holes 9 and the threaded blind holes 10 is three; the three threaded blind holes 10 are arranged at equal intervals on the cylinder wall at the bottom of the lower die 2; and the included angle between every two threaded blind holes 10 is 120°.

[0034] Further, in the embodiment, the upper die 1 comprises an impact force transmission block 11 and the conical body 7; the conical body 7 is installed at the bottom of the impact force transmission block 11; and the impact force transmission block 11 is used for receiving impact force and transmitting the impact force to the conical body 7.

[0035] The pipe end flaring tool provided by the embodiment has the following advantages:

[0036] (1) The conical body 7 of the upper die 1 and the cylinder body of the lower die 2 are coaxially matched, so that the force on the pipe end during flaring is uniform, and flaring deformation or cracking caused by eccentricity is avoided, and the tool is especially suitable for precise machining of thin-walled small pipes.

[0037] (2) The lower die 2 and the base plate 3 are fixed by three-point screwing to enhance the overall rigidity, reduce the vibration deviation under the impact load, and improve the repeated accuracy of the flaring angle and depth;

[0038] (3) The upper die 1 adopts a split structure of the impact force transmission block 11 + the conical body 7, the size or angle of the conical body can be replaced according to different flaring requirements, and various pipe end forming specifications (such as 45° horn mouth, flange edge, etc.) can be adapted;

[0039] (4) The lower die 2 is quickly disassembled from the base plate 3 through the threaded hole, which is convenient for cleaning the debris or replacing the worn parts, and reduces the maintenance cost;

[0040] (5) The through hole of the top rod 4 and the base plate 3 is designed in cooperation, which realizes the stable support of the pipe material from bottom to top, and avoids the operation risk of manually holding the pipe material;

[0041] (6) The impact force transmission block 11 concentrates the hammering force, reduces the energy loss, and reduces the labor intensity of the operator, and at the same time, avoids the fracture of the conical body 7 due to the eccentric load through the rigid impact conduction;

[0042] (7) The installation interface 8 on the side of the base plate 3 supports the adaptation with various workbenches, without the need for customizing special equipment, and the enterprise equipment investment cost is low;

[0043] (8) The threaded connection structure replaces the traditional welding or integral forming process, simplifies the manufacturing difficulty of the tooling, and improves the production flexibility.

[0044] The working principle of the embodiment is as follows:

[0045] Workpiece positioning: the small pipe to be flared is vertically placed in the lower die 2 cylinder, the top rod 4 passes through the through hole from below the base plate and is lifted upward, the small pipe bottom is supported by the cushion block 6, and the initial alignment of the upper end of the small pipe with the conical body 7 of the upper die 1 is ensured;

[0046] Flaring forming: the conical body 7 of the upper die 1 is aligned with the small pipe port, the operator hammers the impact force transmission block 11, and the conical body 7 moves downward along the axial direction; the conical body 7 extrudes the pipe end under the action of the impact force, forces the pipe mouth to expand radially along the conical surface, and forms a preset flared shape (such as a horn mouth). The lower die 2 cylinder forms a circumferential constraint on the outer wall of the pipe material, preventing the pipe body from deforming during flaring.

[0047] The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to the form disclosed in this paper, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described in this paper by the above teaching or related technical or knowledge. The modification and change made by the person skilled in the art without departing from the spirit and scope of the utility model shall be within the protection scope of the claims attached to the utility model.

Claims

1. A tool for flaring the end of a small tube, characterized by: It comprises an upper die, a lower die, a base plate and an ejector pin, wherein: The base plate is fixed on a workbench; a through hole is formed in the middle of the base plate; The lower die is installed on the base plate and located right above the through hole; the lower die is a vertically placed cylinder structure, and the upper and lower ends of the lower die are both open faces; The ejector pin can pass through the through hole from below the base plate and extend into the interior of the cylinder of the lower die; the top of the ejector pin is provided with a pad; The upper die is provided with a conical body for pipe end flaring.

2. A tool for flaring the end of a small tube according to claim 1, characterized in that: The side surface of the base plate is provided with a mounting interface for connecting the base plate to the workbench.

3. A tool for flaring the end of a small tube according to claim 1, wherein: A plurality of threaded through holes are formed in the base plate; a plurality of threaded blind holes corresponding to the threaded through holes are formed in the cylinder wall of the bottom of the lower die; the lower die and the base plate are fixed by screwing.

4. A tool for flaring the end of a small tube according to claim 3, wherein: The number of the threaded through holes and the threaded blind holes is both three; the three threaded blind holes are equally angularly arranged on the cylinder wall of the bottom of the lower die; the included angle between every two threaded blind holes is 120°.

5. A tool for flaring the end of a small tube according to claim 1, wherein: The upper die comprises an impact force transmission block and a conical body; the conical body is installed at the bottom of the impact force transmission block; the impact force transmission block is used for receiving impact force and transmitting the impact force to the conical body.

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