Reshaping die for roundness of precision pipe

Abstract

The utility model relates to the technical field of pipe orifice shaping, in particular to a precision pipe roundness shaping die which comprises a conical die core and a die sleeve assembly, the die sleeve assembly comprises a conical inner clamping sleeve, a conical outer clamping sleeve, a clamp and an end clamping disc, the conical outer clamping sleeve is arranged on the outer side of the conical inner clamping sleeve in a sleeving mode, and the end clamping disc is arranged on the outer side of the conical outer clamping sleeve. A pipe fitting clamping area is formed between one end of the conical inner clamping sleeve and the conical outer clamping sleeve, and the other end of the conical inner clamping sleeve extends out of the conical outer clamping sleeve; and the conical mold core is in sliding connection with an inner hole of the conical inner clamping sleeve. The reshaping die is ingenious in structural design, convenient to disassemble and assemble and good in reshaping effect, the die sleeve adopts the conical die core to apply acting force to the conical inner clamping sleeve and reshape the inner wall of the precision tube, meanwhile, the outer clamping stress sleeve applies acting force to the conical outer clamping sleeve, and the conical outer clamping sleeve reshapes the outer wall of the precision tube. The inner wall and the outer wall of the precision tube are simultaneously stressed and shaped, and the shaping effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision tube processing, in particular to a precision tube true roundness shaping die. Background Art

[0002] When manufacturing precision pipes of various specifications, the roundness of the pipe mouth is often insufficient or becomes larger or smaller due to various factors such as saw cutting, plate size error, processing tool wear, equipment failure, or different operating levels of personnel, so it is necessary to perform roundness shaping of precision pipes. During the shaping process, due to the special accuracy requirements of precision pipes, not only excellent shaping equipment is required, but also a set of shaping molds that are easy to disassemble and can improve the shaping effect. Utility Model Content

[0003] The purpose of the utility model is to provide a precision tube roundness shaping die to facilitate the shaping of the precision tube in view of the above-mentioned problems.

[0004] To achieve the above-mentioned purpose, the utility model provides a precision tube roundness shaping die, comprising a conical die core and a die sleeve assembly, wherein the die sleeve assembly comprises a conical inner ferrule, a conical outer ferrule, a clamp and an end clamping disc, wherein the conical outer ferrule is sleeved on the outer side of the conical inner ferrule, a pipe clamping area is formed between one end of the conical inner ferrule and the conical outer ferrule, and the other end of the conical inner ferrule extends out of the conical outer ferrule; the conical die core is slidably connected to the inner hole of the conical inner ferrule;

[0005] The clamp is mounted on the outside of one end of the cone bottom of the conical outer ferrule, the end clamping plate is clamped on one end of the cone bottom of the conical inner ferrule, a clamping baffle is provided between the clamp and the end clamping plate, the clamping baffle is mounted on the outside of the conical inner ferrule, and the end clamping plate, the clamping baffle and the clamp are fixed by bolts.

[0006] Specifically, the conical inner ferrule and the conical outer ferrule are both formed by splicing a plurality of sector-shaped clamping blocks, and the outer rings are both sleeved with a plurality of rough-surface round belts for fixing the sector-shaped clamping blocks.

[0007] Specifically, the material of the rough-surface round belt is polyurethane, and the number of the rough-surface round belts of the conical inner ferrule and the conical outer ferrule are three respectively.

[0008] Furthermore, a spring is provided between adjacent sector-shaped blocks of the conical outer sleeve.

[0009] Furthermore, an external clamping force-bearing sleeve is provided outside the tapered external clamping sleeve, the inner hole of the external clamping force-bearing sleeve is set as a tapered hole matching the tapered external clamping sleeve, and the external clamping force-bearing sleeve is fixed on the precision tube shaping equipment.

[0010] Preferably, the clamp is provided with a lifting ring for lifting the mold sleeve assembly.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model has an ingenious structural design for the roundness shaping mold for precision tubes, and is easy to disassemble and install. The mold sleeve is composed of a tapered inner ferrule and a tapered outer ferrule joined by a plurality of tapered blocks, and the outer ring is fixed with a rough round belt, so that the tapered inner ferrule and the tapered outer ferrule are retractable, and a spring is arranged between the tapered blocks of the tapered outer ferrule, which is more conducive to the disassembly and assembly of the tube to be shaped.

[0013] 2. The shaping mold of the utility model has good shaping effect. The mold sleeve adopts a conical mold core to exert force on the conical inner sleeve to shape the inner wall of the precision tube. At the same time, the outer clamping sleeve exerts force on the conical outer sleeve, and the conical outer sleeve shapes the outer wall of the precision tube, so that the inner and outer walls of the precision tube are subjected to force and shaped at the same time, thereby improving the shaping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a structural schematic diagram of the utility model precision tube roundness shaping die;

[0016] Figure 2 It is a schematic diagram of a conical mold core, a conical inner ferrule and a conical outer ferrule of a precision tube roundness shaping mold of the utility model;

[0017] Figure 3 It is a cutaway schematic diagram of a conical mold core, a conical inner ferrule and a conical outer ferrule of a precision tube true roundness shaping mold of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the utility model in which the roundness shaping mold is installed on the shaping equipment.

[0019] In the figure: 1-conical mold core, 2-mold sleeve assembly, 21-conical inner ferrule, 22-conical outer ferrule, 23-clamp, 24-end clamping plate, 25-clamping baffle, 26-pipe clamping area, 27-spring, 28-rough round belt, 3-external clamping force sleeve, 4-lifting ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings of the utility model specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In a specific embodiment of the present invention, Figures 1 to 4 As shown, a precision tube roundness shaping die comprises a conical die core 1 and a die sleeve assembly 2, wherein the die sleeve assembly 2 comprises a conical inner ferrule 21, a conical outer ferrule 22, a clamp 23 and an end clamping disc 24, wherein the conical outer ferrule 22 is sleeved on the outer side of the conical inner ferrule 21, and a pipe clamping area 26 is formed between one end of the conical inner ferrule 21 and the conical outer ferrule 22, and the other end of the conical inner ferrule 21 extends out of the conical outer ferrule 22; the conical die core 1 is inserted into the conical inner ferrule 21;

[0022] The conical inner ferrule 21 and the conical outer ferrule 22 are both formed by splicing a plurality of sector-shaped blocks, and the outer rings are both sleeved with a plurality of rough-surface round belts 28 for fixing the sector-shaped blocks, and the rough-surface round belts 28 are all made of polyurethane, which can fix the sector-shaped blocks while making the conical inner ferrule 21 and the conical outer ferrule 22 elastic. Preferably, the number of rough-surface round belts of the conical inner ferrule 21 and the conical outer ferrule 22 is three respectively.

[0023] A spring 27 is provided between adjacent sector-shaped blocks of the tapered outer ferrule 22 for expanding the tapered outer ferrule 22 to facilitate installation of the precision tube to be shaped.

[0024] The clamp 23 is sleeved on the outer side of one end of the cone bottom of the conical outer ferrule 22 and pressed on the rough round band 28 of the outer ring of the conical outer ferrule 22. The end clamping plate 24 is clamped on one end of the cone bottom of the conical inner ferrule 21 and pressed on the rough round band 28 of the outer ring of the conical inner ferrule 21. A clamping baffle 25 is provided between the clamp 23 and the end clamping plate 24. The clamping baffle 25 is sleeved on the outer side of the conical inner ferrule 21. The end clamping plate 24, the clamping baffle 25 and the clamp 23 are fixed by bolts.

[0025] An outer clamping force-bearing sleeve 3 is also provided outside the tapered outer ferrule 22. The inner hole of the outer clamping force-bearing sleeve 3 is set as a tapered hole matching the tapered outer ferrule 22. The outer clamping force-bearing sleeve 3 is fixed on the precision tube shaping equipment. When the outer clamping force-bearing sleeve 3 is used for roundness shaping of the precision tube, a force is applied to the tapered outer ferrule 22 from the outside of the tapered outer ferrule 22 to tighten the tapered outer ferrule 22.

[0026] The clamp 23 is provided with a lifting ring 4 for lifting the mold sleeve assembly 2, and the mold sleeve assembly 2 is lifted through the lifting ring 4 when it is disassembled and replaced.

[0027] The use process of the pipe mouth shaping mold of the utility model is as follows: when the shaping mold in the present application is used, the mold must be installed on the shaping equipment first, and after the precision tube to be shaped is installed in the tube clamping area 26, the conical mold core 1 is extended into the inner hole of the conical inner ferrule 21, and the conical mold core 1 supports the conical inner ferrule 21 outward, so that the conical inner ferrule 21 shapes the inner wall of the precision tube; at the same time, the outer clamping force sleeve 3 is covered on the outside of the conical outer ferrule 22, and the outer clamping force sleeve 3 applies a tightening force to the conical outer ferrule 22, so that the conical outer ferrule 22 is forced to shrink, and the outer wall of the precision tube is shaped after the conical outer ferrule 22 is forced to shrink. When the shaping of the precision tube is completed, the conical mold core 1 and the outer clamping sleeve 3 are withdrawn at the same time, that is, the forces of the conical inner clamping sleeve 21 and the conical outer clamping sleeve 22 are released at the same time, and the conical inner clamping sleeve 21 and the conical outer clamping sleeve 22 lose their forces on the precision tube at the same time, and the shaped precision tube can be taken out.

[0028] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A precision tube roundness shaping die, characterized in that: The invention comprises a conical mold core (1) and a mold sleeve assembly (2), wherein the mold sleeve assembly (2) comprises a conical inner ferrule (21), a conical outer ferrule (22), a clamp (23) and an end clamping plate (24), wherein the conical outer ferrule (22) is sleeved on the outer side of the conical inner ferrule (21), a pipe clamping area (26) is formed between one end of the conical inner ferrule (21) and the conical outer ferrule (22), and the other end of the conical inner ferrule (21) extends out of the conical outer ferrule (22); the clamp (23) is sleeved on the outer side of the conical inner ferrule (21), and a pipe clamping area (26) is formed between the one end of the conical inner ferrule (21) and the conical outer ferrule (22); the other end of the conical inner ferrule (21) extends out of the conical outer ferrule (22); the clamp (23) is sleeved on the outer side of the conical inner ferrule (21), and a pipe clamping area (26) is formed between the one end of the conical inner ferrule (21) and the conical outer ferrule (22). The end clamping plate (24) is clamped on the outer side of one end of the cone bottom of the conical outer sleeve (22), and a clamping baffle (25) is provided between the clamp (23) and the end clamping plate (24). The clamping baffle (25) is sleeved on the outer side of the conical inner sleeve (21), and the end clamping plate (24), the clamping baffle (25) and the clamp (23) are fixed by bolts; the conical mold core (1) is slidably connected to the inner hole of the conical inner sleeve (21).

2. The precision tube roundness shaping die according to claim 1, characterized in that: The conical inner clamping sleeve (21) and the conical outer clamping sleeve (22) are both formed by splicing a plurality of sector-shaped clamping blocks, and the outer rings are both sleeved with a plurality of rough-surface round belts (28) for fixing the sector-shaped clamping blocks.

3. The precision tube roundness shaping die according to claim 2, characterized in that: The material of the rough surface round belt (28) is polyurethane, and the number of rough surface round belts of the conical inner ferrule (21) and the conical outer ferrule (22) are three respectively.

4. The precision tube roundness shaping die according to claim 1, characterized in that: A spring (27) is provided between adjacent sector-shaped blocks of the conical outer sleeve (22).

5. The precision tube roundness shaping die according to claim 1, characterized in that: An external clamping force-bearing sleeve (3) is also provided outside the tapered external clamping sleeve (22), and the inner hole of the external clamping force-bearing sleeve (3) is set as a tapered hole matching the tapered external clamping sleeve (22), and the external clamping force-bearing sleeve (3) is fixed on the precision tube shaping equipment.

6. The precision tube roundness shaping die according to claim 1, characterized in that: The clamp (23) is provided with a lifting ring (4) for lifting the mold sleeve assembly (2).

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