阅读说明：本技术 碳纤维磁选机筒体的制作方法 (Manufacturing method of carbon fiber magnetic separator cylinder ) 是由 张国华 张广礼 李锡光 于 2020-10-23 设计创作，主要内容包括：本发明公开了一种碳纤维磁选机筒体的制作方法,涉及磁选机筒体技术领域。本发明在模具滚筒表面打蜡封底,两端法兰固定在模具上,两个法兰间缠绕多层碳纤维薄膜,碳纤维薄膜的敷盖方向不同,使得碳纤维的受力方向不同；缠绕过程中采用包装扎带进行排气作业,缠绕好的模具进行高温加热固化处理,固化后碳纤维与法兰融为一体。本发明通过高温固化方法制作碳纤维筒体,消除金属材质与磁场产生的涡流电,保证磁场强度；同时碳纤维每层受力方向不同,保证筒体牢固性,延长筒体和磁系使用寿命；缠绕过程中使用包装扎带进行排气作业,相比于传统的刮板或人工挤压,排气作业更加彻底；碳纤维质量轻,便于设备运输和安装。(The invention discloses a manufacturing method of a carbon fiber magnetic separator cylinder, and relates to the technical field of magnetic separator cylinders. According to the invention, the surface of a mould roller is waxed and sealed, flanges at two ends are fixed on a mould, a plurality of layers of carbon fiber films are wound between the two flanges, and the coating directions of the carbon fiber films are different, so that the stress directions of the carbon fibers are different; adopt the packing ribbon to carry out the exhaust operation among the winding process, the mould that twines carries out high temperature heating solidification and handles, and carbon fiber and flange fuse into an organic whole after the solidification. According to the invention, the carbon fiber cylinder is manufactured by a high-temperature curing method, so that eddy current generated by a metal material and a magnetic field is eliminated, and the magnetic field intensity is ensured; meanwhile, the stress directions of each layer of carbon fiber are different, so that the firmness of the cylinder is ensured, and the service lives of the cylinder and the magnetic system are prolonged; the packing ribbon is used for exhausting in the winding process, and compared with a traditional scraper or manual extrusion, the exhausting operation is more thorough; the carbon fiber has light weight, and is convenient for equipment transportation and installation.)

1. The manufacturing method of the carbon fiber magnetic separator cylinder is characterized by comprising the following steps:

s1, waxing the surface of the cylinder mould, fixing flanges at two ends of the cylinder on the mould, and aligning the positions of the two flanges;

s2, enabling the die to rotate at a constant speed and heat at a constant temperature, winding a packaging ribbon between two flanges, starting to wind the packaging ribbon from a connecting cylinder of one end flange to a connecting cylinder of the other end flange, and covering the rear circle of packaging ribbon at a position of one half width of the front circle of packaging ribbon in a lap joint manner, so that the compact structure of the packaging ribbon is ensured;

s3, coating carbon fiber films on the packaging tape layer, wherein the carbon fiber films are single in stress direction, so that the coating direction of each layer of carbon fiber film needs to be changed, and the carbon fiber cylinder can bear tension in different directions;

s4, performing primary air exhaust operation after each 3-4 layers of carbon fiber films are covered, winding a layer of packaging ribbon on the carbon fiber films according to the winding method of the bottom layer packaging ribbon, and extruding the air in the carbon fiber films out of the gaps of the packaging ribbon;

s5, removing the packaging ribbon after the air exhaust operation is finished, and continuously covering the carbon fiber film;

s6, coating 12-25 layers of carbon fiber films together, and reserving the last layer of packaging ribbon for exhausting;

s7, after the winding and exhausting operation is finished, carrying out high-temperature heating curing on the die, wherein the heating temperature is 130-150 ℃, and the heating time is 120-150 min;

and S8, solidifying the cooled carbon fiber and the flange into an integral structure, and taking down the carbon fiber cylinder from the mold.

2. The manufacturing method of the carbon fiber magnetic separator cylinder body according to claim 1, wherein the constant temperature in S2 is 30 ℃.

3. The method for manufacturing the carbon fiber magnetic separator cylinder body according to claim 1, wherein in the step S3, a first carbon fiber film layer is radially covered, a second carbon fiber film layer is obliquely covered to the right, a third carbon fiber film layer is obliquely covered to the left, and a fourth carbon fiber film layer is axially covered, and the covering is repeated so that the carbon fiber cylinder body can bear the tensile force in different directions.

4. The manufacturing method of the carbon fiber magnetic separator cylinder body according to claim 1, wherein the thickness of the carbon fiber cylinder wall is 1.5-3 mm.

5. The method for manufacturing the carbon fiber magnetic separator cylinder body according to claim 1, wherein the packaging ribbon is a PP film packaging ribbon, and the breaking tension of the packaging ribbon is more than 500N.

6. The manufacturing method of the carbon fiber magnetic separator cylinder body according to claim 1, wherein a ceramic sheet is pasted on the exterior of the carbon fiber cylinder body after demolding, so that the wear resistance is improved.

Technical Field

The invention relates to the technical field of manufacturing of magnetic separator cylinders, in particular to a manufacturing method of a carbon fiber magnetic separator cylinder.

Background

In all magnet mine enterprises in China, the existing magnetic separator cylinder is mainly made of metal materials such as stainless steel, the metal materials are easily abraded in the long-term use process, equipment is scrapped, and the equipment cost is too high for the enterprises.

At present, a layer of rubber plate is added on a stainless steel surface layer to serve as a protective layer, but the service life of the rubber plate protective layer is usually prolonged within a certain time, so that the rubber plate protective layer needs to be replaced, the production cost is increased, and the time is spent. The ceramic is directly adhered to a stainless steel cylinder of the magnetic separator, the adhesion is limited by temperature and time, the adhesion effect is poor when the temperature is lower than 15 ℃, the ceramic is easy to fall off, the ceramic can be used after the curing time is 24 hours, the adhesion effect is poor in the mode, and the ceramic is inconvenient to manufacture. Meanwhile, eddy current can be generated between the cylinder made of metal and the magnetic material when the magnetic separator operates, the eddy current can enable the metal cylinder to generate heat, the magnetic field is influenced, the magnetic material is demagnetized, and the expected magnetic separation effect cannot be achieved.

The non-metal cylinder body is adopted to overcome the original defects, and the problem of firmness in connection between the non-metal cylinder body and the metal flange plays an important role in the service life of subsequent equipment. The metal cylinder is replaced by the pure wear-resistant ceramic, the joint of the ceramic and the flange is easy to crack, the service life is shortened, and the investment cost of enterprises is increased.

Disclosure of Invention

In order to solve the technical problems, the invention provides the manufacturing method of the carbon fiber magnetic separator cylinder, eddy current is not generated in the cylinder in the working process of the magnetic separator, the service life of a magnetic system is prolonged, the weight of equipment is reduced, and transportation and installation are facilitated.

In order to realize the technical purpose, the invention adopts the following scheme: the manufacturing method of the carbon fiber magnetic separator cylinder comprises the following steps:

s1, waxing the surface of the cylinder mould, fixing flanges at two ends of the cylinder on the mould, and aligning the positions of the two flanges;

s2, enabling the die to rotate at a constant speed and heat at a constant temperature, winding a packaging ribbon between two flanges, starting to wind the packaging ribbon from a connecting cylinder of one end flange to a connecting cylinder of the other end flange, and covering the rear circle of packaging ribbon at a position of one half width of the front circle of packaging ribbon in a lap joint manner, so that the compact structure of the packaging ribbon is ensured;

s3, coating carbon fiber films on the packaging tape layer, wherein the carbon fiber films are single in stress direction, so that the coating direction of each layer of carbon fiber film needs to be changed, and the carbon fiber cylinder can bear tension in different directions;

s4, performing primary air exhaust operation after each 3-4 layers of carbon fiber films are covered, winding a layer of packaging ribbon on the carbon fiber films according to the winding method of the bottom layer packaging ribbon, and extruding the air in the carbon fiber films out of the gaps of the packaging ribbon;

s5, removing the packaging ribbon after the air exhaust operation is finished, and continuously covering the carbon fiber film;

s6, coating 12-25 layers of carbon fiber films together, and reserving the last layer of packaging ribbon for exhausting;

s7, after the winding and exhausting operation is finished, carrying out high-temperature heating solidification on the die, wherein the heating temperature is 130-150 ℃, and the heating time is 120-150 min;

and S8, solidifying the cooled carbon fiber and the flange into an integral structure, and taking down the carbon fiber cylinder from the mold.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the carbon fiber cylinder is manufactured by a high-temperature curing method, so that eddy current generated by a metal material and a magnetic field is eliminated, and the magnetic field intensity is ensured; meanwhile, the stress directions of each layer of carbon fiber are different, so that the firmness of the cylinder is ensured, and the service lives of the cylinder and the magnetic system are prolonged; the packing ribbon is used for exhausting in the winding process, and compared with a traditional scraper or manual extrusion, the exhausting operation is more thorough; the carbon fiber has light weight, and is convenient for equipment transportation and installation.

The preferred scheme of the invention is as follows:

the constant temperature in S2 was 30 ℃.

First layer carbon fiber film radially applies the lid in S3, and the second floor carbon fiber film inclines to the right and applies the lid, and the third layer carbon fiber film applies the lid to the left bank, and the cover is applied to fourth layer carbon fiber film axial, so repeatedly for the carbon fiber barrel can bear the pulling force of equidirectional, increases the fastness of barrel, increase of service life.

The thickness of the carbon fiber cylinder wall is 1.5-3 mm, the cylinder body is light in weight and thin in thickness, and installation and transportation are facilitated.

The packaging ribbon is a PP film packaging ribbon, the fracture tension of the packaging ribbon is more than 500N, and the inner layer and the outer layer of the carbon fiber cylinder are wrapped by the PP film packaging ribbon, so that the bearing capacity of the cylinder is further increased.

And a layer of ceramic chip is stuck outside the demoulded carbon fiber cylinder, so that the wear resistance is improved.

Drawings

FIG. 1 is a schematic structural view of a mold apparatus used in the manufacturing method of the present invention;

labeled as: the device comprises a barrel mould 1, a motor 2, a hoop 3, a nut 4, a bolt 5, a flange 6 and a connecting barrel 7.

Detailed Description

The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention, but the present invention is not limited thereto.

According to the manufacturing method of the carbon fiber magnetic separator cylinder, a cylinder mold 1 is a cylindrical roller, one end of the roller is connected with a motor 2, a constant-temperature heating system is arranged in the roller, two clamps 3 used for fixing flanges 6 are arranged on the outer wall of the roller, a plurality of nuts 4 are welded on the outer wall of each clamp 3, and the positions of the nuts 4 correspond to the positions of bolt holes in the flanges 6, as shown in figure 1.

The specific manufacturing steps are as follows:

and S1, waxing the surface of the mold 1, fixing the flanges 6 at the two ends of the cylinder on the mold, and aligning the positions of the two flanges 6. Two clamps 2 are installed on the barrel mould 1, the flange 6 is closely adjacent to the clamps 2, and the bolt 5 penetrates through a bolt hole in the flange 6 to be connected with the nut 4 on the clamp 3. The clamp 3 is located the flange 6 outside, and the flange 6 inboard is fixed with connecting cylinder 7 for be connected with the carbon fiber barrel.

S2, the die 1 is driven by the motor 2 to rotate at a constant speed and heat at a constant temperature of 30 ℃. And a PP film packing ribbon is wound between the two flanges 6, and the packing ribbon is wound from the connecting cylinder of one flange to the connecting cylinder of the other flange. The half width department of the round of packing ribbon in the front is taken to cover in winding process back round packing ribbon, guarantees that packing ribbon compact structure provides the support for the carbon fiber layer. Preferably, the breaking tension of the PP film packaging tie is more than 500N.

S3, coating the carbon fiber films on the packaging tape layer, and because the carbon fiber films are single in stress direction, the coating direction of each layer of carbon fiber film needs to be changed, so that the whole carbon fiber cylinder can bear tension in different directions, and the service life of the cylinder is prolonged. The cover is radially applied to first layer carbon fiber film among the winding process, and the cover is applied to the slope of second layer carbon fiber film right, and the cover is applied to the slope of left to third layer carbon fiber film, and the cover is applied to fourth layer carbon fiber film axial, so cover repeatedly for the carbon fiber barrel can bear not equidirectional pulling force. Or the 1 st to 3 rd layers of carbon fiber films are radially coated, the 4 th to 6 th layers of carbon fiber films are coated in a right-inclined mode, the 7 th to 9 th layers of carbon fiber films are coated in a left-inclined mode, and the 10 th to 12 th layers of carbon fiber films are coated in an axial mode. The coating direction refers to the direction of the carbon fibers.

And S4, performing primary air exhaust operation after the carbon fiber film is covered by 3-4 layers, winding a layer of packaging ribbon on the carbon fiber film according to the winding method of the bottom layer packaging ribbon, and extruding the gas in the carbon fiber film out of the gap between the packaging ribbons.

And S5, removing the packaging ribbon for air exhaust after the air exhaust operation is finished, and continuously covering the carbon fiber film.

S6, coating 12-25 layers of carbon fiber films, wherein the thickness of the carbon fiber cylinder wall is 1.5-3 mm, and reserving the packaging ribbon for last exhaust.

And S7, after the winding and exhausting operation is finished, heating and curing the die at a high temperature of 130-150 ℃ for 120-150 min.

And S8, solidifying the cooled carbon fiber and the flange into an integral structure, and taking down the carbon fiber cylinder from the mold.

And a layer of ceramic chip is stuck outside the demoulded carbon fiber cylinder, so that the wear resistance is improved.

According to the invention, the carbon fiber cylinder is manufactured by a high-temperature curing method, so that eddy current generated by a metal material and a magnetic field is eliminated, and the magnetic field intensity is ensured; meanwhile, the stress directions of each layer of carbon fiber are different, so that the firmness of the cylinder is ensured, and the service lives of the cylinder and the magnetic system are prolonged; the packing ribbon is used for exhausting in the winding process, and compared with a traditional scraper or manual extrusion, the exhausting operation is more thorough; the carbon fiber has light weight, and is convenient for equipment transportation and installation.

Finally, it is noted that: the above-mentioned list is only the preferred embodiment of the present invention, and naturally those skilled in the art can make modifications and variations to the present invention, which should be considered as the protection scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.