CN217570341U

CN217570341U - Composite core rod for bending high-temperature alloy steel pipe

Info

Publication number: CN217570341U
Application number: CN202221578223.2U
Authority: CN
Inventors: 刘何荣; 吴陶; 王彬
Original assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Current assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-10-14
Anticipated expiration: 2032-06-22

Abstract

The utility model discloses a compound plug is used in bending of high temperature alloy steel pipe, including core, the mandrel body and screw, the core includes first oil duct, core body, second oil duct, third oil duct, first screw and tail chamber, and the inside of core body connects gradually first oil duct, first screw and tail chamber, and the second oil duct is located the radial of core body, and the core body periphery is equipped with the ring channel, and the second oil duct communicates with the ring channel, and the third oil duct is along the pore of first screw diameter, and the third oil duct communicates with second oil duct and tail chamber respectively; the mandrel body comprises a fourth oil duct, a boss, a through hole, a main body and a second screw hole, the boss is matched with the tail cavity, the through hole and the second screw hole are sequentially arranged in the main body, the fourth oil duct is arranged along the radial direction of the main body, and the axis of the oil duct is flush with the inner step surface; the screw is connected with the via hole. The utility model discloses clearance between can the crooked plug cost of using of greatly reduced high temperature alloy steel pipe and ability fully lubricated steel pipe and the mould.

Description

Composite core rod for bending high-temperature alloy steel pipe

Technical Field

The utility model relates to a compound plug is used in bending of high temperature alloy steel pipe.

Background

In the production process of the guide pipe, the guide pipe is often required to be bent and formed, the bent part is easy to generate the defects such as wrinkling and the like, the mold is required to be adopted to prevent the defects from being generated, the core rod is one of the key parts of the mold, particularly, the core rod is required to be processed by copper alloy in the bending and forming process of the thin-wall high-temperature alloy steel pipe with larger outer diameter and smaller bending radius, the copper alloy is integrally processed in the prior process, and the cost of the core rod is higher because the price of the copper alloy is more than that of steel materials by tens of times. Meanwhile, the oil ducts of some core rods are not completely opened, so that the lubrication between the inner wall of the steel pipe and the core rods is insufficient, and the defects of the bent parts can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's not enough, provide a compound plug is used in bending of high temperature alloy steel pipe, mainly used high temperature alloy steel pipe is in the structure of the plug that adopts the return bend equipment to carry out bending forming's mould, is applicable to the bending forming of stainless steel pipe equally, is particularly useful for the bending forming of the great steel pipe of internal diameter.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

a composite core rod for bending a high-temperature alloy steel pipe comprises a core head, a core rod body and a screw,

the core head comprises a first oil duct, a core head body, a second oil duct, a third oil duct, a first screw hole and a tail cavity, wherein the first oil duct, the first screw hole and the tail cavity are sequentially connected inside the core head body;

the mandrel body comprises a fourth oil duct, a boss, a through hole, a main body and a second screw hole, the boss is matched with the tail cavity, the through hole and the second screw hole are sequentially arranged in the main body, the fourth oil duct is arranged along the radial direction of the main body, and the axis of the oil duct is flush with the inner stepped surface; the screw is connected with the via hole.

Preferably, the mandrel body is provided with a clamping portion on the outer periphery thereof.

Preferably, the core print is made of aluminum bronze and integrally processed.

Preferably, the core rod body is made of 45 steel, and the surface of the core rod body is plated with chrome.

Further preferably, the diameter of the annular groove is matched with the aperture of the second oil passage.

Preferably, four second oil passages are arranged and are uniformly distributed along the radial direction of the core print head body.

Further preferably, the number of the fourth oil passages is two, and the four oil passages are uniformly distributed along the radial direction of the main body.

This practicality adopts the combined type structure, and anterior segment working position still adopts the copper alloy material, and the back end mainly plays to support the connection position then to adopt the carbon steel material, and the middle screw joint that adopts to set up many oil ducts and can fully pour into the steel pipe in order to do benefit to lubricating oil, and cover the clearance between steel pipe and the mould.

The utility model has the advantages of it is following:

the utility model discloses clearance between can the crooked plug cost of using of greatly reduced high temperature alloy steel pipe and ability fully lubricated steel pipe and the mould.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a core structure;

FIG. 3 is a schematic view of a mandrel body construction;

FIG. 4 isbase:Sub>A cross-sectional view of FIG. 3A-A;

fig. 5 is a usage state diagram of the present invention.

In the figure: 1. the core rod comprises a core head, 2, a core rod body, 3, a screw, 1-1, a first oil duct, 1-2, a core head body, 1-3, a second oil duct, 1-4, a third oil duct, 1-5, a first screw hole, 1-6, a tail cavity, 2-1, a fourth oil duct, 2-2, a boss, 2-3, a through hole, 2-4, a main body, 2-5, a second screw hole, 2-6, a clamping part, 4, a workpiece, 5, a composite core rod, 6 and an equipment screw rod.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example (b):

a composite core rod for bending a high-temperature alloy steel pipe comprises a core head 1, a core rod body 2 and a hexagon socket screw 3, wherein the core head 1 is integrally formed by aluminum bronze, and is provided with 1-1 oil duct 1, 1-2 core head bodies, 1-3 oil duct 2, 1-4 oil duct 3, 1-5 first screw holes and 1-6 tail cavities. The 1-1 oil duct 1 is used for injecting lubricating oil into the front end of a pipe, the 1-3 oil ducts 2 are uniformly distributed at 4 positions in the radial direction and are processed into an annular groove along the outer diameter, the diameter of the annular groove is the same as the aperture of the oil duct 2, the 1-4 oil ducts 3 are arranged into pore channels along the middle diameter of a first screw hole, and the depth is from the inner end surface of a tail cavity 1-6 to the central axis of the 1-3 oil ducts 2. The core rod body is made of 45 steel, is plated with chrome on the surface, and is provided with 2-1 oil ducts 4, 2-2 bosses, 2-3 through holes, 2-4 main bodies, 2-5 second screw holes and 2-6 clamping parts. The 2-1 oil duct is provided with 2 uniformly distributed through holes along the radial direction, the axis of the oil duct is flush with the inner step surface, when a 3 inner hexagonal screw is arranged in the 2-3 through hole, lubricating oil can be ensured to be sequentially injected into the 1-4 oil duct 3, the 1-3 oil duct 2 and the 1-1 oil duct 1,2-2 boss and the 1-6 tail cavity through small interference fit, a 1 core head is heated firstly during assembly, then a rubber hammer is used for knocking the 2 core rod body, the 2-2 boss is inserted into the 1-6 tail cavity, then the 3 inner hexagonal screw 1 core head and the 2 core rod body are screwed, a certain processing allowance is reserved before assembly, and the inner hexagonal screw 1 core head and the 2 core rod body are processed in place after assembly. And 2-5, the second screw hole is used for connecting with equipment.

When the composite core rod of the utility model is used, firstly 5 composite core rods are connected with 6 equipment screw rods through 2-5 second, and then the 2-6 clamping parts are clamped by the spanner and screwed tightly until the composite core rod can not rotate. And then starting the equipment to move the 5 composite core rod to a position specified in the process specification, sleeving the 4 workpieces into the 5 composite core rod, opening an oil filling switch of the equipment, using a inching mode, sliding the 4 workpieces back and forth, and stopping the manual oil filling switch when the lubricating oil flows out from the left end of the 4 workpieces. Finally, the other parts of the die are installed in place to be bent.

And after the bending is finished, the 5 composite core rod is automatically withdrawn from the 4 workpieces under the action of equipment, and then the 5 composite core rod is taken down on a storage rack by clamping the 2-6 clamping parts with a spanner.

The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.

Claims

1. The utility model provides a crooked compound plug of using of high temperature alloy steel pipe which characterized in that: comprises a core print, a core rod body and a screw,

the mandrel body comprises a fourth oil duct, a boss, a through hole, a main body and a second screw hole, the boss is matched with the tail cavity, the through hole and the second screw hole are sequentially arranged in the main body, the fourth oil duct is arranged along the radial direction of the main body, and the axis of the oil duct is flush with the inner step surface;

the screw is connected with the via hole.

2. The composite mandrel for bending the high-temperature alloy steel tube as claimed in claim 1, wherein: the periphery of the mandrel body is provided with a clamping part.

3. The composite mandrel for bending the high-temperature alloy steel tube as claimed in claim 1 or 2, wherein: the core print is made of aluminum bronze and integrally processed and formed.

4. The composite mandrel for bending the high-temperature alloy steel tube as claimed in claim 1 or 2, wherein: the core rod body is made of 45 steel, and the surface of the core rod body is plated with chrome.

5. The composite mandrel for bending the high-temperature alloy steel tube as claimed in claim 1 or 2, wherein: the diameter of the annular groove is matched with the aperture of the second oil duct.

6. The composite mandrel for bending the high-temperature alloy steel tube as claimed in claim 1 or 2, wherein: and four second oil passages are uniformly distributed along the radial direction of the core head body.

7. The composite mandrel for bending the high-temperature alloy steel pipe according to claim 1 or 2, wherein: and the four oil passages are uniformly distributed along the radial direction of the main body.