阅读说明：本技术 一种可延长包覆层使用寿命的短辊包覆方法 (Short roller coating method capable of prolonging service life of coating layer ) 是由 段小军 孔建新 杨智 于 2020-11-17 设计创作，主要内容包括：本发明公开了一种可延长包覆层使用寿命的短辊包覆方法,提出一种预压原片的新型包覆工艺,所述包覆方法包括以下步骤：步骤一：首先将耐热复合纤维材料按照预定厚度和形状模切成型,形成耐热复合纤维待压片；步骤二：将模切成型好的耐热复合纤维待压片沿厚度方向施加6Mpa压强,进行预压强化处理,形成耐热复合纤维片；步骤三：使用压力机向两个挡圈之间施加12Mpa压强,并拧紧锁紧螺母；步骤四：将预压强化处理后的耐热复合纤维片按照短辊牵引成型机构进行安装；本发明通过科学合理的结构设计,材料密度高,平均磨耗量小,抗变形能力强,提高了短辊使用寿命,使得短辊包覆层偏磨及磨耗不均的问题得到了很好改善。(The invention discloses a short roller coating method capable of prolonging the service life of a coating layer, and provides a novel coating process for prepressing an original sheet, wherein the coating method comprises the following steps: the method comprises the following steps: firstly, die-cutting and molding a heat-resistant composite fiber material according to a preset thickness and shape to form heat-resistant composite fibers to be pressed into a sheet; step two: applying 6Mpa pressure to the die-cut and molded heat-resistant composite fiber to be pressed sheet along the thickness direction, and performing pre-pressing strengthening treatment to form a heat-resistant composite fiber sheet; step three: applying 12Mpa pressure between the two check rings by using a press machine, and screwing a locking nut; step four: installing the heat-resistant composite fiber sheet subjected to the pre-pressing strengthening treatment according to a short-roller traction forming mechanism; the invention has the advantages of high material density, small average abrasion loss and strong deformation resistance through scientific and reasonable structural design, prolongs the service life of the short roller, and well improves the problems of eccentric wear and uneven wear of the coating layer of the short roller.)

1. A short roller coating method capable of prolonging the service life of a coating layer is characterized in that: the coating method comprises the following steps:

the method comprises the following steps: firstly, die-cutting and molding a heat-resistant composite fiber material according to a preset thickness and shape to form heat-resistant composite fibers to be pressed into a sheet;

step two: applying 6Mpa pressure to the die-cut and molded heat-resistant composite fiber to-be-pressed sheet along the thickness direction, and performing pre-pressing strengthening treatment to form a heat-resistant composite fiber sheet (21);

step three: the heat-resistant composite fiber sheets processed by the pre-pressing process are penetrated and stacked between the two check rings of the short roller mandrel, and the number of the heat-resistant composite fiber sheets is calculated according to the number of sheets required by the coating length.

Step four: applying 12Mpa coating pressure between the two retaining rings by using a four-column type press machine to form a short roller coating layer, and screwing a locking nut (4);

the heat-resistant composite fiber sheet (21) after the pre-pressing strengthening treatment is specifically installed according to a short-roller traction forming mechanism;

the short roller traction forming mechanism comprises an annealing furnace (10) and short roller traction clamping assemblies (20) symmetrically arranged on two sides of the annealing furnace (10), substrate glass (30) is distributed between the two short roller clamping assemblies (20), and each short roller clamping assembly (20) consists of two short roller coating pieces (40) symmetrically distributed;

the short roller coating piece (40) comprises a short roller core (1) and a coating layer (2) arranged at the inner end of the short roller core (1), the outer end of the short roller core (1) is connected with a driving mechanism, and retaining rings (3) are symmetrically arranged on two sides of the coating layer (2);

short roller core (1) is including roller core pivot (11) and set up at roller core pivot (11) inner roller core installation axle (12), and roller core installation axle (12) inner is equipped with locking double-screw bolt (13), and retaining ring (3) are installed to roller core installation axle (12) both ends symmetry, and coating (2) comprise along axis direction equipartition heat-resisting composite fiber piece (21) in the middle of roller core installation axle (12), install lock nut (4) on locking double-screw bolt (13).

2. The multilayer stub roll according to claim 1, wherein: when the hardness of the coating layer needs to be adjusted, the coating layers with different hardness parameters can be obtained by adjusting the acting pressure of the prepressing original piece experimentally without changing the formula of the heat-resistant composite fiber piece and adjusting the final coating pressure in a matching manner.

3. A method of cladding a short roll with an extended useful life of the cladding as claimed in claim 1 wherein: two short roll cladding pieces (40) in the short roll clamping assembly (20) synchronously rotate oppositely.

4. A method of cladding a short roll with an extended useful life of the cladding as claimed in claim 1 wherein: the outer part of the short roll core (1) is supported by an independent bearing seat.

Technical Field

The invention belongs to the field of liquid crystal glass substrate manufacturing, and particularly relates to a short roller coating method capable of prolonging the service life of a coating layer.

Background

With the mature substrate manufacturing technology and the continuous progress of equipment level, the glass substrate manufacturing in China is developed to higher generations. The G7.5/G8.5 advanced generation liquid crystal substrate glass main process still uses the overflow down-draw method, but because the area of the glass plate is multiplied, the forming difficulty is correspondingly increased, the roller leading technology applied to the G6 production line can not adapt to the production of advanced generation substrates, therefore, a multilayer short roller traction system is adopted in the forming process of advanced generation substrates, namely 2/4/6/8/10/five groups of multilayer short rollers are distributed along the vertical direction of the annealing furnace according to the forming temperature gradient, the short roller traction system effectively overcomes the defect of large deformation of the roller body of the roller, the plate leading technology makes great progress in concept, but the following problems are gradually shown in the application process of the short roller system: firstly, the average abrasion loss of the diameter of the short roller coating layer is about 0.08-0.10mm/24H, and the abrasion loss of the coating layer is large; secondly, the short roller is stressed maximally in the plate leading process, and the problem that the abrasion loss of the short rollers at different stations is inconsistent exists; thirdly, the single short roller has the eccentric wear phenomenon that the wear loss in the diameter direction is inconsistent, after the single short roller is used for a period of time, the change of the cylindricity of the boss is large, and the phenomenon is shown that the floating amount of the floating side roller begins to increase, so that the warping fluctuation of a product is caused; fourthly, the comprehensive average service life is short, and the average service life is 40 days; the problems cause adverse effects on the forming production of the substrate glass, mainly show that the impact on the product quality is caused after irregular abrasion occurs on the multi-layer short roller coating layers, and in addition, the short service life of the coating layers seriously restricts the stable forming production.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provide a short roller coating method capable of prolonging the service life of a coating layer.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

a method of cladding a stub roll to extend the useful life of the cladding, said cladding method comprising the steps of:

the method comprises the following steps: firstly, die-cutting and molding a heat-resistant composite fiber material according to a preset thickness and shape to form heat-resistant composite fibers to be pressed into a sheet;

step two: applying 6Mpa pressure to the die-cut and molded heat-resistant composite fiber to be pressed sheet along the thickness direction, and performing pre-pressing strengthening treatment to form a heat-resistant composite fiber sheet;

step three: the heat-resistant composite fiber sheets processed by the pre-pressing process are penetrated and stacked between the two check rings of the short roller mandrel, and the number of the heat-resistant composite fiber sheets is calculated according to the number of sheets required by the coating length.

Step four: applying 12Mpa coating pressure between the two retaining rings by using a four-column type press machine to form a short roller coating layer, and screwing a locking nut;

installing the heat-resistant composite fiber sheet after the pre-pressing strengthening treatment according to a short roller traction forming mechanism;

the short roller traction forming mechanism comprises an annealing furnace and short roller traction clamping assemblies symmetrically arranged on two sides of the annealing furnace, substrate glass is distributed between the two short roller clamping assemblies, and the short roller clamping assemblies are composed of two short roller coating pieces symmetrically distributed;

the short roller coating piece comprises a short roller core and a coating layer arranged at the inner end of the short roller core, the outer end of the short roller core is connected with a driving mechanism, and two sides of the coating layer are symmetrically provided with check rings;

the short roller core comprises a roller core rotating shaft and a roller core mounting shaft arranged at the inner end of the roller core rotating shaft, the inner end of the roller core mounting shaft is provided with a locking stud, two ends of the roller core mounting shaft are symmetrically provided with check rings, a coating layer consists of heat-resistant composite fiber sheets uniformly distributed in the middle of the roller core mounting shaft along the axis direction, and the locking stud is provided with a locking nut;

further, two short roll cladding pieces in the short roll clamping assembly rotate synchronously and oppositely.

Further, the outer portion of the stub roll core furnace is supported by a separate bearing housing.

The invention has the beneficial effects that:

the invention has the advantages that through scientific and reasonable structural design, the material density is high, the average abrasion loss is small, the deformation resistance is strong, the service life of the short roller is prolonged, and the problems of eccentric wear and uneven wear of the coating layer of the short roller are well improved; and when the hardness of the forming process strategy needs to be adjusted, under the condition of not changing the formula of the heat-resistant composite fiber sheet, the coating layers with different hardness can be obtained by experimentally adjusting the acting pressure of the prepressing original sheet and matching with the adjustment of the final coating pressure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic view of a short roll drawing forming mechanism;

FIG. 2 is a schematic view of the short roll cover assembly;

FIG. 3 is an enlarged partial schematic view of the short roll cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

A short roller coating method capable of prolonging the service life of a coating layer comprises the following steps:

the method comprises the following steps: firstly, die-cutting and molding a heat-resistant composite fiber material according to a preset thickness and shape to form heat-resistant composite fibers to be pressed into a sheet;

step two: applying 6Mpa pressure to the die-cut and molded heat-resistant composite fiber to be pressed sheet along the thickness direction, and performing pre-pressing strengthening treatment to form a heat-resistant composite fiber sheet 21;

step three: and then, the heat-resistant composite fiber sheets 21 processed by the pre-pressing process are penetrated, installed and stacked between the two check rings of the short roller mandrel, and the number of the heat-resistant composite fiber sheets is calculated according to the number of sheets required by the coating length.

Step four: applying 12Mpa coating pressure between the two retaining rings by using a four-column type press machine to form a short roller coating layer, and screwing a locking nut 4;

the heat-resistant composite fiber sheet 21 after the pre-pressing strengthening treatment is specifically installed according to a short-roller traction forming mechanism;

as shown in fig. 1, the short roll drawing forming mechanism comprises an annealing furnace 10 and short roll drawing clamping assemblies 20 symmetrically arranged at two sides of the annealing furnace 10, wherein the substrate glass 30 is distributed between the two short roll clamping assemblies 20, and the short roll clamping assemblies 20 are composed of two short roll coating members 40 symmetrically distributed;

as shown in fig. 2, the short roll covering member 40 comprises a short roll core 1 and a covering layer 2 arranged at the inner end of the short roll core 1, the outer end of the short roll core 1 is connected with a driving mechanism, and two sides of the covering layer 2 are symmetrically provided with retaining rings 3;

as shown in fig. 3, the short roller core 1 comprises a roller core rotating shaft 11 and a roller core mounting shaft 12 arranged at the inner end of the roller core rotating shaft 11, the inner end of the roller core mounting shaft 12 is provided with a locking stud 13, two ends of the roller core mounting shaft 12 are symmetrically provided with retaining rings 3, the coating layer 2 is composed of heat-resistant composite fiber sheets 21 uniformly distributed in the middle of the roller core mounting shaft 12 along the axial direction, and the locking stud 13 is provided with a locking nut 4;

the two short roll cladding members 40 in the short roll clamping assembly 20 rotate synchronously and oppositely, and the outer part of the short roll core 1 is supported by an independent bearing seat.

The specific principle is as follows:

the manufacturing process of the traditional heat-resistant composite fiber board is similar to the process flow of papermaking, and the heat-resistant composite fiber raw board with the thickness of 5mm is formed by the steps of crushing and mixing raw materials, dispersing and pulping, making paper by a rotating cage, stacking for many times, drying and the like, so that the manufactured fiber raw board has the problems of uneven thickness and density and internal defects; and the manufacturing process flow of the heat-resistant composite fiber board has difficulty in having a space for optimizing and improving.

The existing short roll coating technology is to perform die cutting on an excircle and an inner hole of a manufactured heat-resistant composite fiber board according to a required shape, then to penetrate and stack the heat-resistant composite fiber board on a short roll mandrel according to a certain number of sheets, and then to apply pressure on a check ring for extrusion to form a coating layer; because the internal organization structure of a short roller coating layer coated according to the structure in the short roller traction forming mechanism is uneven, the phenomena of large abrasion loss in the diameter direction, inconsistent abrasion loss at different stations and eccentric abrasion can be caused in the birth, the problems cause the warping fluctuation of a product in the substrate glass forming process, the average service life of a short roller is shortened, the average service life is 40 days, and the stable production of the substrate glass is seriously restricted;

the following table is the data collected for the hardness and thickness of the original die-cut sheet without prepressing:

the following table is data collected of the hardness and thickness of the die-cut original sheet after prepressing:

the following table shows the hardness distribution data of the short roller coated with constant pressure 12MPa by prepressing the original sheet with 6MPa pressure in the circumferential direction, and shows that the hardness of different parts of the coating layer is relatively uniform:

the short roller is coated according to the process, after trial on a wire body, the average abrasion loss is 0.03-0.05mm/24H, the service life of the short roller is effectively prolonged, and the problems of eccentric wear and uneven abrasion of the short roller coating layer which is continuously used for 3 months are well improved when the short roller coating layer is measured; and when the hardness of the forming process strategy needs to be adjusted, under the condition of not changing the formula of the heat-resistant composite fiber sheet, the coating layers with different hardness can be obtained by experimentally adjusting the acting pressure of the prepressing original sheet and matching with the adjustment of the final coating pressure.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.