CN210648069U

CN210648069U - Gas cylinder closing-in spinning wheel die

Info

Publication number: CN210648069U
Application number: CN201921109886.8U
Authority: CN
Inventors: 崔闻天; 刘泽林; 陈杰; 任全兴; 汲庆会; 徐瑞冲
Original assignee: Xinxing Energy Equipment Co Ltd
Current assignee: Xinxing Energy Equipment Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-06-02
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a gas cylinder binding off spinning wheel mould. The mould is assembled with a spinning shaft, and the included angle between the central line of the spinning shaft and the central line of the gas cylinder is 60 degrees. The rotary angle of the bottle mouth of the mold is 28-34 degrees, the rotary angle of the end socket is 18-23 degrees, the radius of a molding fillet is R10-25mm, and the assembling and positioning surfaces of the rotary wheel mold and the rotary shaft are two cylindrical surfaces of a step hole. The positioning surface is increased, and the hot spinning of the spinning wheel die is more stable. When the hot spinning device is used, pockmarks of the end socket, orange peel and the cone of the bottle mouth are eliminated, the quality of the gas cylinder is improved, and the workload is reduced for the processing of the next procedure; the wall thickness of the bottle mouth is increased, and the bottle mouth processing is facilitated.

Description

Gas cylinder closing-in spinning wheel die

Technical Field

The utility model discloses be applied to seamless gas cylinder production field, concretely relates to spinning wheel mould for gas cylinder binding off.

Background

Seamless gas cylinders are mostly adopted for storage and transportation of high-pressure gas such as natural gas and the like, welding is not allowed in the manufacturing process of the gas cylinders, and the gas cylinders are formed by hot spinning and closing up of seamless steel pipes. The hot spinning needs to use a spinning wheel die, and figure 1 is a schematic diagram of hot spinning. After the end part of the seamless steel pipe 1 is heated at high temperature, the end part of the seamless steel pipe 1 is placed into a hot spinning machine, the seamless steel pipe 1 rotates, a spinning wheel mold 5 is fastened on a spinning shaft 4 through a bolt 6, the spinning wheel mold 5 moves downwards to press the end part of the high-temperature steel pipe to rotate passively, and the end part of the steel pipe deforms under the pressure action of the spinning wheel mold 5. The spinning shaft 4 drives the spinning wheel die 5 to move left and right and up and down according to the design, and gradually spins the bottle mouth out of the seal head 2 and the bottle mouth 3.

In the hot spinning process of the gas cylinder, the end socket forming surface 7 of the spinning roller die 5 is responsible for end socket forming spinning, the bottle mouth forming surface 8 is responsible for bottle mouth forming spinning, the angle of the end socket spinning angle a is 25 degrees, the angle is large, the stress of the end socket forming surface is unbalanced during hot spinning, pits are easy to generate, the surface is in a orange peel shape, and great workload is brought to subsequent polishing. The angle of the bottle mouth rotation angle b is directly related to the appearance of the bottle mouth of the gas bottle, when the bottle mouth rotation angle b is too large, a regular cone shape is easily formed, and as shown in the attached drawing 1, if the bottle mouth rotation angle b is too small, an inverted cone shape is easily formed. Whether the bottle mouth is in a forward conical shape or an inverted conical shape, the wall thickness and the processing amount of the bottle mouth are influenced.

Disclosure of Invention

The utility model provides a technical problem be: the spinning roller die is reasonable in design, so that the end socket pockmark and the bottle mouth taper are eliminated, the quality of the gas cylinder is improved, and the workload of the next procedure is reduced.

The utility model adopts the technical proposal that: the gas cylinder closing spinning wheel die is assembled with the spinning shaft, the included angle between the central line of the spinning shaft and the central line of the gas cylinder is 60 degrees, the spinning angle of the opening of the spinning wheel die is 28 degrees to 33 degrees, the spinning angle of the sealing head is 18 degrees to 23 degrees, and the radius of a formed fillet R10 to 25mm is beneficial to improving the hot spinning quality of the sealing head and the opening of the gas cylinder. The spinning wheel die and the spinning shaft are assembled with two cylindrical surfaces of which the positioning surfaces are step holes. The positioning surface is increased, and the hot spinning of the spinning wheel die is more stable.

The utility model has the advantages that: pocking marks of the seal head, orange peel and the taper of the bottle mouth are eliminated, the quality of the gas cylinder is improved, and the workload for the processing of the next procedure is reduced; the wall thickness of the bottle mouth is increased, and the bottle mouth processing is facilitated. The stepped hole positioning surface stabilizes the hot spinning process and ensures the quality of the gas cylinder to be improved.

Drawings

FIG. 1 is a schematic view of a gas cylinder closing in;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the assembly of the present invention;

wherein: 1-seamless steel tube, 2-end enclosure, 3-bottleneck, 4-spinning shaft, 5-spinning wheel mould, 6-bolt, 7-end enclosure forming surface, 8-bottleneck forming surface, 9-matching surface, 10-assembling surface, 11-mounting hole and 12-bolt blind hole.

Detailed Description

Use the utility model discloses spinning machine of spinning wheel mould, as shown in figure 1, seamless steel pipe 1's horizontal center line is 60 with the central line contained angle of spinning axle 4, and practice proves, when bottleneck spiral angle b is less than 28, the bottleneck forms the back taper, when bottleneck spiral angle b is greater than 35, the bottleneck forms positive toper, and its ideal angle is 30. Since the spinning shaft 4 can be finely adjusted within 2-3 deg., the angle is adjusted to 28-33 deg..

The angle of the head spiral angle a is adjusted from 25 degrees to 18-23 degrees, in the hot spinning process, the stress surface of the gas cylinder head is increased, the hot spinning stress is more balanced, the spinning roller die does not stick materials, the gas cylinder head has no pockmark or orange peel, and the surface of the head of the screwed gas cylinder port is smooth.

Fig. 2 is the utility model discloses spinning wheel mould's structural schematic diagram, transition arc angle between head profiled surface 7 and the bottleneck profiled surface 8 are the shaping fillet, and when the radius of shaping fillet was greater than 25mm, at the hot spinning in-process, the difficult spinning bodiness of bottleneck, the utility model discloses revise the radius of this arc angle for R10-20mm, bottleneck spinning bodiness effect is obvious, and the processing surplus increases, is favorable to the processing of bottleneck.

The utility model discloses a another change is the improvement of assembly methods, in the attached figure 1, relies on fitting surface 9 to fix a position between spinning wheel mould 5 and the spinning axle 4, then adopts bolt 6 to connect. If the positioning surface is elastically deformed, the hot spinning quality of the gas cylinder end socket is inevitably influenced. In addition, the bolt 6 is screwed out of the threaded hole of the spinning wheel die 5 and then screwed into the threaded hole of the spinning shaft 4, the spinning wheel die 5 and the spinning shaft 4 are required to be assembled and processed in the connection mode, and the spinning wheel die 5 is poor in replaceability and high in assembly difficulty. After improvement, the spinning wheel die 5 and the spinning shaft 4 are positioned by the matching surface 9, the assembly surface 10 is added for positioning, the two positioning surfaces enable the spinning wheel die 5 to work more stably, the end socket hot spinning quality is reliable, and a foundation is laid for eliminating pockmarks. The bolt hole matched with the bolt 6 on the spinning wheel mold 5 is changed into a through hole, the bolt 6 is convenient and quick to install, and as shown in the attached drawing 3, the spinning wheel mold 5 is good in interchangeability. The mounting holes 11 machined for mounting the bolts 6 help to reduce the weight of the spinning wheel die 5. Two bolt blind holes 12 are processed on the non-forming surface of the spinning roller die 5, and the bolts are screwed, so that the hoisting is facilitated, and the operation of installing, assembling, replacing and the like of the spinning roller die 5 with heavier weight is facilitated.

The spinning roller die is improved in external forming shape and size and also in an assembly mode, so that the mounting is convenient, the interchangeability is good, pockmarks of the seal head, orange peel and the cone of the bottle opening are eliminated, the processing quality of the gas cylinder is improved, and the workload of the next procedure is reduced.

Claims

1. The utility model provides a gas cylinder binding off spinning wheel mould, with spinning shaft (4) assembly, spinning shaft (4) central line is 60 with gas cylinder central line contained angle, its characterized in that: the rotary angle of the bottle mouth of the rotary wheel mold is 28-33 degrees, the rotary angle of the seal head is 18-23 degrees, and the radius of a molding fillet R10-20 mm.

2. A gas cylinder closing-in spinning wheel mold according to claim 1, characterized in that: the assembling and positioning surfaces of the spinning wheel mould and the spinning shaft (4) are two cylindrical surfaces of a step hole.