阅读说明：本技术 一种植物纤维纸复合成消音管的成型工艺 (Forming process for compounding plant fiber paper into silencing pipe ) 是由 杨耀峰 胡家东 于 2019-04-15 设计创作，主要内容包括：本发明公开了一种植物纤维纸复合成消音管的成型工艺,属于消音管成型的技术领域,旨在提供一种制造高性能的植物纤维纸复合成消音管的成型工艺,其技术方案要点是具体步骤如下：S1：第一次施胶：将植物纤维纸放入酚醛树脂溶液中浸泡60min,然后通过压辊进行挤压,接下来通过烘箱加热30min,烘箱中的温度为105℃,烘箱中的压强为10Mpa；S2：第二次施胶：芯棒上的植物纤维纸展开在酚醛树脂溶液中浸泡30min；S3：经过第二次施胶的植物纤维纸通过压辊进行挤压,并同时对植物纤维纸进行加热；S4：将加热后的植物纤维纸卷绕在芯棒上成型。使得消音管具有较好的刚性、透气性以及消音能力,使得消音管在满足刚性的同时,增强消音管的韧性,制造成本低,消音效果好。(The invention discloses a forming process for compounding plant fiber paper into a silencing pipe, belongs to the technical field of silencing pipe forming, and aims to provide a forming process for manufacturing a high-performance plant fiber paper compounded silencing pipe, which has the technical scheme main points that the forming process comprises the following steps: s1: sizing for the first time: soaking plant fiber paper in phenolic resin solution for 60min, extruding by a compression roller, and heating in an oven at 105 deg.C for 30min under 10 Mpa; s2: sizing for the second time: spreading the plant fiber paper on the core rod, and soaking in the phenolic resin solution for 30 min; s3: extruding the plant fiber paper subjected to secondary sizing through a compression roller, and heating the plant fiber paper simultaneously; s4: and winding the heated plant fiber paper on a core rod for forming. The silencing pipe has good rigidity, air permeability and silencing capacity, the toughness of the silencing pipe is enhanced while the rigidity of the silencing pipe is met, the manufacturing cost is low, and the silencing effect is good.)

1. A forming process for compounding plant fiber paper into a silencing pipe is characterized in that: the method comprises the following specific steps:

s1: sizing for the first time: soaking plant fiber paper in phenolic resin solution for 60min, extruding by a compression roller, heating in an oven at 105 deg.C for 30min under 10Mpa, and winding on a core rod;

s2: sizing for the second time: spreading the plant fiber paper on the core rod, and soaking in the phenolic resin solution for 30 min;

s3: extruding the plant fiber paper subjected to secondary sizing through a compression roller, and heating the plant fiber paper simultaneously;

s4: winding the heated plant fiber paper on a core rod for forming;

s5: putting the plant fiber paper and the core rod into an oven for heating and curing;

s6: and taking the formed silencing pipe off the core rod.

2. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 1, wherein the forming process comprises the following steps: the quantitative ratio of the plant fiber paper is between 120g/m²～140g/m²The water content is 2.0-3.0%, and the air permeability is 800-900L/m²(s) has an average pore diameter of 80 to 90 μm.

3. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 1, wherein the forming process comprises the following steps: the phenolic resin solution comprises 7-9 parts of phenolic resin and 1-2 parts of alcohol in parts by mass.

4. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 1, wherein the forming process comprises the following steps: and in S3, a press roll forms 6-8 Mpa pressure on the plant fiber paper subjected to secondary sizing.

5. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 1, wherein the forming process comprises the following steps: in S3, the press roller is a heating roller with a temperature of 80-100 ℃.

6. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 1, wherein the forming process comprises the following steps: in S4, the speed of winding the plant fiber paper on the mandrel is 1.5-2.2 m/min.

7. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 1, wherein the forming process comprises the following steps: in S5, the heating temperature in the oven is gradually raised from 50-180 ℃, the heating time is 60-80 min, and the pressure in the oven is 3-4 Mpa.

8. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 7, wherein the plant fiber paper is selected from the group consisting of: after the plant fiber paper is put into an oven, the plant fiber paper is sequentially heated at 50 ℃ for 30min, 80 ℃ for 15min to 20min, 120 ℃ for 15min to 20min and 180 ℃ for 10 min.

9. The forming process of the plant fiber paper compounded silencing tube as claimed in claim 1, wherein the forming process comprises the following steps: coating Teflon on the surface of the core rod.

Technical Field

The invention relates to the technical field of silencing pipe forming, in particular to a forming process for compounding plant fiber paper into a silencing pipe.

Background

The dryer is a mechanical device for reducing moisture of materials by using heat energy, and is used for drying objects. The dryer vaporizes moisture (typically moisture or other volatile liquid components) in the material by heating to escape to obtain a solid material of a specified moisture content. The purpose of drying is for material use or further processing requirements. However, when the dryer is used, a large noise is generated, resulting in a poor working environment of a factory.

As early as 25 years ago, the drying technology of compressed air in China is in the stage of imitating European and American technologies and product imitation, at the moment, a silencer made of plant fiber composite paper is arranged at an exhaust port of an adsorption compression control dryer, the silencer is arranged on the dryer, the noise generated when the dryer works can be greatly reduced, and the silencing is more and more widely applied along with the improvement of the working environment of a factory. However, at the moment, China does not have the technology, and how to manufacture the silencer is not known, so that the silencer can be processed only by using a method for producing the silencer by using the traditional process.

With the progress of technology, the requirements of Europe and America on the silencer are higher and higher, and the performance of the product is far lower than that of foreign products, so that the export of the product is influenced.

Disclosure of Invention

The invention aims to provide a forming process for compounding plant fiber paper into a silencing pipe, which has the advantage of producing a high-quality silencer.

The technical purpose of the invention is realized by the following technical scheme:

a forming process for compounding plant fiber paper into a silencing pipe comprises the following specific steps:

s1: sizing for the first time: soaking plant fiber paper in phenolic resin solution for 60min, extruding by a compression roller, heating in an oven at 105 deg.C for 30min under 10Mpa, and winding on a core rod;

s2: sizing for the second time: spreading the plant fiber paper on the core rod, and soaking in the phenolic resin solution for 30 min;

s3: extruding the plant fiber paper subjected to secondary sizing through a compression roller, and heating the plant fiber paper simultaneously;

s4: winding the heated plant fiber paper on a core rod for forming;

s5: putting the plant fiber paper and the core rod into an oven for heating and curing;

s6: and taking the formed silencing pipe off the core rod.

Through adopting above-mentioned technical scheme, the glueing makes plant fiber paper have stronger toughness for the first time, and the glueing further strengthens plant fiber's intensity for the second time, then extrudees through the compression roller to certain phenolic resin content in the plant fiber paper keeps, adopts the warming mill to accelerate to dry plant fiber paper, then puts into the oven solidification moulding with plant fiber paper winding on the plug, takes off from the plug at last.

Further, the basis weight of the plant fiber paper is between 120g/m²～140g/m²The water content is 2.0-3.0%, and the air permeability is 800-900L/m²(s) has an average pore diameter of 80 to 90 μm.

By adopting the technical scheme, the air-permeable silencer meets certain requirements in the aspects of bulkiness, air permeability aperture, air resistance and the like, so that better silencing effect and toughness are obtained.

Further, the phenolic resin solution comprises 7-9 parts of phenolic resin and 1-2 parts of alcohol in parts by mass.

By adopting the technical scheme, the alcohol can be fully dissolved as the organic solvent, so that the phenolic resin can well permeate into the plant fiber paper during the second sizing.

Further, in S3, the press roll forms 6-8 Mpa pressure on the plant fiber paper subjected to secondary sizing.

By adopting the technical scheme, the excessive alcohol and phenolic resin in the plant fiber paper are extruded out, and a certain content of the phenolic resin is reserved.

Further, in S3, a heating roller is used as the pressing roller, and the temperature of the heating roller is between 80 and 100 ℃.

By adopting the technical scheme, the boiling point of the ethanol is 78 ℃, and the ethanol in the plant fiber paper is evaporated at 80-100 ℃.

Further, in S4, the speed of winding the plant fiber paper on the core rod is 1.5-2.2 m/min.

By adopting the technical scheme, the tightness between layers and the firmness of combination can be well controlled when the plant fiber paper is wound.

Further, in S5, the heating temperature in the oven is gradually raised from 50-180 ℃, the heating time is 60-80 min, and the pressure in the oven is 3-4 MPa.

Through adopting above-mentioned technical scheme, the temperature in the oven improves gradually, clears away remaining alcohol in the plant fiber paper clean gradually, avoids forming the explosion in the oven.

Further, after the plant fiber paper is placed in an oven, the plant fiber paper is sequentially heated at 50 ℃ for 30min, at 80 ℃ for 15min to 20min, at 120 ℃ for 15min to 20min and at 180 ℃ for 10 min.

By adopting the technical scheme, the alcohol in the plant fiber paper is sublimated by heating at 50 ℃ for 30min, then the alcohol in the plant fiber paper is further effectively removed by further heating at 80 ℃ and 120 ℃ respectively, and the phenolic resin in the plant fiber paper is cured at 180 ℃, so that the rigidity of the silencing pipe is enhanced.

Further, teflon is coated on the surface of the core rod.

By adopting the technical scheme, the Teflon coating is coated on the core rod, so that the formed silencing pipe can be conveniently taken down from the core rod, and the silencing pipe is prevented from being adhered to the core rod.

In conclusion, the invention has the following beneficial effects:

the silencing pipe has good rigidity, air permeability and silencing capacity, the toughness of the silencing pipe is enhanced while the rigidity of the silencing pipe is met, the manufacturing cost is low, and the silencing effect is good.

Drawings

FIG. 1 is a flow chart of the forming process of the silencing tube compounded by the plant fiber paper in the embodiment;

FIG. 2 is a schematic diagram of the embodiment for embodying the first sizing of the plant fiber paper;

fig. 3 is a schematic diagram of the second sizing of the vegetable fibre paper used in the examples.

Detailed Description

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