阅读说明：本技术 一种碳纤维制品的制作方法 (Method for manufacturing carbon fiber product ) 是由 李俊杰 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种碳纤维制品的制作方法,包括以下步骤：S1、骨架芯材的制作；S2、卷制成型：将碳纤维布按制品的结构、形状、大小在经过步骤S1的EPS芯材的尼龙气袋上进行叠层卷制,使制品初步成型；S3、热成型；S4、EPS芯材的溶解：往经过步骤S3成型的制品的尼龙气袋内灌入二氯甲烷溶剂,使二氯甲烷溶剂对尼龙气袋内的EPS芯材进行溶解。在步骤S4之后还包括尼龙气袋的抽取：将经过步骤S4的制品的尼龙气袋往外抽取。本发明的步骤设计合理,通过增加步骤S4,从而通过二氯甲烷溶剂对EPS芯材进行溶解,而溶解后的EPS芯材可以随尼龙气袋轻松向外拉出,从而无需提前将EPS芯材取出,从而提高了碳纤维制品的生产质量与生产效率,降低制造成本。(The invention discloses a method for manufacturing a carbon fiber product, which comprises the following steps: s1, manufacturing a framework core material; s2, rolling and forming: laminating and rolling the carbon fiber cloth on the nylon air bag of the EPS core material obtained in the step S1 according to the structure, shape and size of the product to preliminarily form the product; s3, thermoforming; s4, dissolving EPS core materials: and (4) filling dichloromethane solvent into the nylon air bag of the product formed in the step (S3) to dissolve the EPS core material in the nylon air bag by the dichloromethane solvent. Also included after step S4 is the extraction of the nylon air bag: the nylon airbag of the product having passed through step S4 is drawn out. The steps of the invention are reasonable in design, the EPS core material is dissolved by the dichloromethane solvent through the addition of the step S4, and the dissolved EPS core material can be easily pulled out along with the nylon air bag, so that the EPS core material does not need to be taken out in advance, the production quality and the production efficiency of the carbon fiber product are improved, and the manufacturing cost is reduced.)

1. A method for manufacturing a carbon fiber product is characterized by comprising the following steps:

s1, manufacturing a framework core material: manufacturing an EPS core material which is adaptive to the appearance structure, shape and size of the product, and sleeving a nylon air bag on the outer part of the EPS core material along the extension direction of the EPS core material;

s2, rolling and forming: laminating and rolling the carbon fiber cloth on the nylon air bag of the EPS core material obtained in the step S1 according to the structure, shape and size of the product to preliminarily form the product;

s3, thermoforming: placing the product preliminarily molded in the step S2 into a lower die of a molding die prepared for matching, connecting an air pipe with a nylon air bag, inflating the nylon air bag through the air pipe, fixing the shape after the inflation is finished, then buckling an upper die of the molding die on the lower die, and then placing the buckled molding die into a molding furnace platform for heating and pressurizing to mold the product;

s4, dissolving EPS core materials: and (4) filling dichloromethane solvent into the nylon air bag of the product formed in the step (S3) to dissolve the EPS core material in the nylon air bag by the dichloromethane solvent.

2. The method of manufacturing a carbon fiber product according to claim 1, wherein: also included after step S4 is the extraction of the nylon air bag: the nylon airbag of the product having passed through step S4 is drawn out.

3. The method of manufacturing a carbon fiber product according to claim 1, wherein: in step S4, a dichloromethane solution is poured into the nylon airbag of the product molded in step S3, wherein the mass percentage of the dichloromethane solvent in the dichloromethane solution is 32% to 42%, so that the dichloromethane solution dissolves the EPS core material in the nylon airbag.

4. A method of making a carbon fiber product according to any one of claims 1 to 3, wherein: the method also comprises the following steps of cutting the carbon fiber cloth before the step S2: and cutting the carbon fiber cloth by a computer program-controlled paper cutter according to the shape and specification in the product combination table.

5. A method of making a carbon fiber product according to any one of claims 1 to 3, wherein: the step S3 is preceded by a process of molding a mold: the surface of the forming mould is coated with a parting agent.

6. A method of making a carbon fiber product according to any one of claims 1 to 3, wherein: the carbon fiber product is one of a carbon fiber bicycle frame, a carbon fiber electric bicycle frame and a carbon fiber front fork.

7. The method of manufacturing a carbon fiber product according to claim 6, wherein: in step S3, the temperature at which thermoforming is performed in the forming hearth is 155 ℃. + -. 5 ℃ and the blow air pressure for thermoforming is 1.1 MPa. + -. 0.2 MPa.

8. The method of manufacturing a carbon fiber product according to claim 7, wherein: the carbon fiber product is one of a carbon fiber bicycle frame and a carbon fiber electric bicycle frame; in step S3, the thermoforming time is 85 to 95 minutes.

9. The method of manufacturing a carbon fiber product according to claim 8, wherein: the installation of the silica gel sleeve is also included before the step S2: a silica gel sleeve is arranged on the EPS core material corresponding to the five-way joint of the carbon fiber bicycle frame or the carbon fiber electric bicycle frame; in step S2, the carbon fiber cloth is laminated and rolled on the nylon air bag of the EPS core material and the silica gel sleeve which are mounted in step S1 according to the structure, shape and size of the product, so that the product is preliminarily molded; also including the extraction of the silicone sleeve after step S4: and (5) extracting the silica gel sleeve in the product outwards by using external force.

10. The method of manufacturing a carbon fiber product according to claim 7, wherein: the carbon fiber product is a carbon fiber front fork; in step S3, the thermoforming time is 40 to 50 minutes.

Technical Field

The invention relates to the technical field of manufacturing of carbon fiber products, in particular to a manufacturing method of a carbon fiber product.

Background

Carbon fiber is used as a novel material, products manufactured by using the carbon fiber are popular among people due to light weight and high strength, and the carbon fiber is more popular to be manufactured by applying the carbon fiber material to products such as bicycle frames, electric bicycle frames, front forks and the like.

However, in the process of manufacturing these carbon fiber products using carbon fiber materials, the following problems are often encountered: because the in-process of making carbon fiber products with the carbon fiber cloth is carried out the stromatolite to the manual work, carbon fiber cloth can be down collapsed, consequently can select an EPS core as the support chassis usually, carry out supporting role to the carbon fiber cloth of stromatolite winding in-process, and because carbon fiber products can make the tip opening of self become hard and very little for the volume of EPS core after thermoforming usually, thereby cause the EPS core to take out or extremely difficult taking out, and then make people after stromatolite book system, just take out the EPS core before thermoforming, thereby only rely on the nylon air pocket that has filled with gas to support carbon fiber cloth, but this has just caused another problem, because the holding power of nylon air pocket itself is not as the holding power of EPS core, thereby make the carbon fiber products's that produce the quality is relatively poor, thereby the goods competitiveness has been reduced.

Disclosure of Invention

The invention aims to provide a method for manufacturing a carbon fiber product, which aims to solve the technical problem that an EPS core material is extremely difficult to take out of the carbon fiber product after thermoforming in the prior art.

In order to achieve the above object, the technical solution of the present invention provides a method for manufacturing a carbon fiber product, comprising the steps of:

s1, manufacturing a framework core material: manufacturing an EPS core material which is adaptive to the appearance structure, shape and size of the product, and sleeving a nylon air bag on the outer part of the EPS core material along the extension direction of the EPS core material;

s2, rolling and forming: laminating and rolling the carbon fiber cloth on the nylon air bag of the EPS core material obtained in the step S1 according to the structure, shape and size of the product to preliminarily form the product;

s3, thermoforming: placing the product preliminarily molded in the step S2 into a lower die of a molding die prepared for matching, connecting an air pipe with a nylon air bag, inflating the nylon air bag through the air pipe, fixing the shape after the inflation is finished, then buckling an upper die of the molding die on the lower die, and then placing the buckled molding die into a molding furnace platform for heating and pressurizing to mold the product;

s4, dissolving EPS core materials: and (4) filling dichloromethane solvent into the nylon air bag of the product formed in the step (S3) to dissolve the EPS core material in the nylon air bag by the dichloromethane solvent.

Further, after step S4, the method further comprises the following steps of extracting the nylon air bag: the nylon airbag of the product having passed through step S4 is drawn out.

Further, in step S4, a dichloromethane solution is filled into the nylon airbag of the product molded in step S3, wherein the dichloromethane solution accounts for 32 to 42 mass percent of the weight of the dichloromethane solution, and the dichloromethane solution is used to dissolve the EPS core material in the nylon airbag.

Further, before step S2, cutting of the carbon fiber cloth is also included: and cutting the carbon fiber cloth by a computer program-controlled paper cutter according to the shape and specification in the product combination table.

Further, the step S3 is preceded by a process of molding a mold: the surface of the forming mould is coated with a parting agent.

Further, the carbon fiber product is one of a carbon fiber bicycle frame, a carbon fiber electric bicycle frame and a carbon fiber front fork.

Furthermore, the temperature for thermoforming in the forming furnace platform is 155 +/-5 ℃, and the blowing air pressure for thermoforming is 1.1 +/-0.2 MPa.

As a preferred embodiment, the carbon fiber product is one of a carbon fiber bicycle frame and a carbon fiber electric bicycle frame; in step S3, the thermoforming time is 85 to 95 minutes.

Further, before step S2, the method further includes the installation of a silicone sleeve: a silica gel sleeve is arranged on the EPS core material corresponding to the five-way joint of the carbon fiber bicycle frame or the carbon fiber electric bicycle frame; in step S2, the carbon fiber cloth is laminated and rolled on the nylon air bag of the EPS core material and the silica gel sleeve which are mounted in step S1 according to the structure, shape and size of the product, so that the product is preliminarily molded; also including the extraction of the silicone sleeve after step S4: and (5) extracting the silica gel sleeve in the product outwards by using external force.

As another preferred embodiment, the carbon fiber product is a carbon fiber front fork; in step S3, the thermoforming time is 40 to 50 minutes.

In summary, the technical scheme of the invention has the following beneficial effects:

the steps of the invention are reasonable in design, and the step S4 is added, so that after the product is subjected to thermoforming, the dichloromethane solvent can be filled into the nylon air bag of the product to dissolve the EPS core material, and after the EPS core material is dissolved by the dichloromethane solvent, the dissolved EPS core material can be easily pulled out along with the nylon air bag, thereby solving the technical problem that the EPS core material is extremely difficult to take out from the carbon fiber product after thermoforming in the prior art, and further, the EPS core material does not need to be taken out before thermoforming after winding and forming, so that the EPS core material can be used for supporting the carbon fiber cloth in the thermoforming stage, thereby improving the production quality and production efficiency of the carbon fiber product, reducing the manufacturing cost and improving the product competitiveness.

Drawings

FIG. 1 is a flow chart of a method of making a carbon fiber article of the present invention;

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, but the technical solutions in the embodiments of the present invention are not limited to the scope of the present invention.

Referring to fig. 1, the present embodiment provides a method for manufacturing a carbon fiber product, including the following steps:

s1, manufacturing a framework core material: manufacturing an EPS core material which is adaptive to the appearance structure, shape and size of the product, and sleeving a nylon air bag on the outer part of the EPS core material along the extension direction of the EPS core material;

s2, rolling and forming: laminating and rolling the carbon fiber cloth on the nylon air bag of the EPS core material obtained in the step S1 according to the structure, shape and size of the product to preliminarily form the product; in step S2, the carbon fiber cloth is preferably laminated and rolled manually to preliminarily form the product, but other methods may be used.

S3, thermoforming: placing the product preliminarily molded in the step S2 into a lower die of a molding die prepared for matching, connecting an air pipe with a nylon air bag, inflating the nylon air bag through the air pipe, fixing the shape after the inflation is finished, then buckling an upper die of the molding die on the lower die, and then placing the buckled molding die into a molding furnace platform for heating and pressurizing to mold the product;

s4, dissolving EPS core materials: and (4) filling dichloromethane solvent into the nylon air bag of the product formed in the step (S3) to dissolve the EPS core material in the nylon air bag by the dichloromethane solvent.

The beneficial effects of the technical scheme are as follows: through increasing step S4, thereby make the goods after the thermoforming, can be through pouring into the nylon air bag of goods with the dichloromethane solvent, so that the dichloromethane solvent dissolves the EPS core, thereby after the dissolution of EPS core through the dichloromethane solvent, the EPS core after dissolving can be easily outwards pulled out along with the nylon air bag, thereby the technical problem that the EPS core just is extremely difficult to take out from carbon fiber products after the thermoforming among the prior art has been solved, thereby need not after the book system shaping, just take out the EPS core before the thermoforming, thereby can use the EPS core to support carbon fiber cloth in the thermoforming stage, thereby improve carbon fiber products' S production quality and production efficiency, reduce manufacturing cost, thereby the goods competitiveness has been improved.

Specifically, the method further comprises the following step of extracting the nylon air bag after the step of S4: the nylon airbag of the product having passed through step S4 is drawn out. And the dissolved EPS core material can be easily pulled out along with the nylon air bag. Specifically, the nylon airbag may be pulled out by using a tool such as pliers, or may be pulled out by using another method or tool.

Specifically, in step S4, a dichloromethane solution is poured into the nylon airbag of the product molded in step S3, wherein the dichloromethane solution accounts for 32% to 42% by mass, and preferably 37% by mass, and the dichloromethane solution is used to dissolve the EPS core material in the nylon airbag. It should be noted that, the above technical solution is considered from the aspect of reducing the cost by diluting the dichloromethane solvent or producing other technical effects by adding other solvents, so that the dichloromethane solvent is mixed with other solvents or solutes to form the dichloromethane solution in practical use, but the dichloromethane solvent is diluted to a certain extent, and in order to ensure that the dichloromethane solvent in the dichloromethane solution can effectively dissolve the EPS core material in the nylon airbag, the mass percentage of the dichloromethane solvent in the dichloromethane solution is preferably kept at 32% to 42%, preferably at 37%, and of course, the mass percentage of the dichloromethane solvent can be further reduced or increased according to the self-requirement. Regarding the amount of the dichloromethane solvent or the dichloromethane solution, preferably, the carbon fiber product can be filled with the dichloromethane solvent or the dichloromethane solution in the nylon air bag, so that the dichloromethane solvent or the dichloromethane solution can have better dissolving effect on the EPS core material. The dichloromethane solvent is necessary for the dichloromethane solution to dissolve the EPS core material, and other materials in the dichloromethane solution may be selected as needed, and are not limited herein. Because the volume of the EPS core material used in different carbon fiber products is different, the dissolving time of dichloromethane solvent or dichloromethane solution to EPS core materials with different volume sizes can also be different.

Specifically, cutting of the carbon fiber cloth is further included before step S2: and cutting the carbon fiber cloth by a computer program-controlled paper cutter according to the shape and specification in the product combination table.

Specifically, the method further comprises the following steps of processing the carbon fiber cloth before the cutting of the carbon fiber cloth: cutting, folding and rolling the carbon fiber cloth according to a required angle; before the step of cutting the carbon fiber cloth, the method also comprises the following steps of: the table composed of the shapes, specifications and combination modes of a plurality of types of carbon fiber cloth is manufactured according to the structures, shapes and sizes of products, because the carbon fiber products are manufactured by manually laminating and rolling the carbon fiber cloth one by one according to the specifications in the product combination table to form the shapes, the structures and the sizes of the products, and therefore, the cut carbon fiber cloth is consistent with the carbon fiber cloth used in laminating and rolling.

Specifically, the process of molding the mold is further included before step S3: the surface of the forming mould is coated with a parting agent. The release agent is coated to enable the molded product to be separated from the molding die more easily, the nylon air bag is not required to be coated again due to the release agent, and the release agent at the position is used for enabling the molded carbon fiber product to be separated from the nylon bag more easily. It should be noted that: since the release agent is a common article in the manufacturing industry of carbon fiber products and is the prior art, the details are not repeated.

Preferably, the carbon fiber product is one of a carbon fiber bicycle frame, a carbon fiber electric bicycle frame and a carbon fiber front fork. When the EPS core material is dissolved by using a dichloromethane solution, and the mass percentage of a dichloromethane solvent in the dichloromethane solution is 32-42%, especially 37%, the dissolution time and the dissolution degree of the dichloromethane solution for dissolving the EPS core material in a carbon fiber bicycle frame, a carbon fiber electric vehicle frame or a nylon air bag of a front fork are good, and the EPS core materials used in all three carbon fiber products are relatively small, so the soaking time of the EPS core material by using the dichloromethane solution in the proportion is 20-40 minutes, preferably 30 minutes, and of course, the EPS core material can be soaked for a longer time. The dissolution time of EPS core materials used in other carbon fiber products having a relatively large or small volume becomes different depending on the volume.

Specifically, the temperature for thermoforming in the forming furnace platform is 155 +/-5 ℃, and the blowing air pressure for thermoforming is 1.1 +/-0.2 MPa. Specifically, the oil pressure of the forming furnace table during hot forming was 11.0 MPa. + -. 0.5 MPa. Of course, different thermoforming temperatures, air pressures and oil pressures can be selected according to different carbon fiber products.

As a preferred embodiment, the carbon fiber product is one of a carbon fiber bicycle frame and a carbon fiber electric bicycle frame; in step S3, the thermoforming time is 85 to 95 minutes, preferably 90 minutes. It is of course also possible to select different thermoforming times for different carbon fibre products.

Specifically, the installation of the silica gel sleeve is further included before the step S2: a silica gel sleeve is arranged on the EPS core material corresponding to the five-way joint of the carbon fiber bicycle frame or the carbon fiber electric bicycle frame; in step S2, the carbon fiber cloth may be manually or otherwise laminated and rolled on the nylon airbag of EPS core material and the silicone sleeve, which are mounted in step S1, according to the structure, shape and size of the product, so as to preliminarily form the product; also including the extraction of the silicone sleeve after step S4: and (5) extracting the silica gel sleeve in the product outwards by using external force. Specifically, the silicone sleeve may be pulled out by a tool such as pliers. Of course, the use of the silicone sleeve is not required for all carbon fiber products, for example, a carbon fiber front fork is not required, and the specific use of the silicone sleeve should be selected according to actual needs.

As another preferred embodiment, the carbon fiber product is a carbon fiber front fork; in step S3, the thermoforming time is 40 to 50 minutes, preferably 45 minutes. It is of course also possible to select different thermoforming times for different carbon fibre products.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.