Carbon fiber plate splicing process and carbon fiber plate

Abstract

The invention discloses a carbon fiber plate splicing process and a carbon fiber plate.The carbon fiber plate splicing process comprises the following steps that laser cutting is conducted on a first prepreg and a second prepreg so that a first plate and a second plate can be formed, and the carbon filament modulus of the first prepreg and the carbon filament modulus of the second prepreg are different; the first plate and the second plate are spliced on the bottom plate, so that a middle transition layer is formed on the bottom plate; the cover plate is compounded on the middle transition layer, and the cover plate, the middle transition layer and the bottom plate are subjected to hot pressing to form a semi-finished product; and performing laser cutting on the semi-finished product to form a finished product. The cover plate and the bottom plate are compounded on the first plate piece and the second plate piece correspondingly, so that the surface of the carbon fiber plate manufactured through the technology does not have the appearance problems of splicing marks and the like, and the attractiveness of the carbon fiber plate is improved.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber splicing technology, and in particular to a carbon fiber sheet splicing process and a carbon fiber sheet. Background Technology

[0002] When it is necessary to produce carbon sheets with different moduli, two different carbon fiber prepregs are usually spliced ​​together. However, after splicing, there are often appearance problems such as splicing marks on the surface of the carbon sheet. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the first aspect of the present invention proposes a splicing process for carbon fiber sheets with a more aesthetically pleasing surface.

[0004] A second aspect of the present invention also provides a carbon fiber plate.

[0005] A carbon fiber sheet splicing process according to a first aspect embodiment of the present invention includes the following steps:

[0006] The first prepreg and the second prepreg are laser-cut to form a first plate and a second plate, respectively, wherein the carbon filament moduli of the first prepreg and the second prepreg are different.

[0007] The first and second plates are spliced ​​together on the base plate to form an intermediate transition layer on the base plate;

[0008] The cover plate is laminated onto the intermediate transition layer, and the cover plate, intermediate transition layer and base plate are hot-pressed to form a semi-finished product;

[0009] The semi-finished product is laser-cut to form the finished product.

[0010] A carbon fiber sheet splicing process according to a first aspect of the present invention has at least the following technical effects:

[0011] In the carbon fiber sheet splicing process of this application, a first prepreg is laser-cut to form a first sheet, and a second prepreg is laser-cut to form a second sheet. The first and second sheets are then spliced ​​on a base plate to form an intermediate transition layer. A cover plate is then laminated onto the intermediate transition layer, and the cover plate, intermediate transition layer, and base plate are hot-pressed to form a semi-finished product. The semi-finished product is then laser-cut to form the finished product. As can be seen from the above, by laminating the cover plate and base plate onto the first and second sheets respectively, the carbon fiber sheet manufactured using this process will not have splicing marks or other aesthetic problems on its surface, thereby improving the aesthetics of the carbon fiber sheet.

[0012] According to a first aspect of the present invention, a carbon fiber sheet splicing process includes a base plate having a first through hole and a second through hole formed by laser, a first plate having a first positioning hole formed by laser, and a second plate having a second positioning hole formed by laser. The first plate and the second plate are spliced ​​on the base plate, comprising the following steps:

[0013] Install the base plate onto the fixture, and make the first positioning pin on the fixture pass through the first through hole, and make the second positioning pin on the fixture pass through the second through hole;

[0014] Install the first plate onto the base plate and insert the first positioning pin into the first positioning hole;

[0015] The second plate is installed on the base plate, and the second positioning pin is inserted through the second positioning hole to complete the splicing of the second plate and the first plate.

[0016] According to a first aspect of the present invention, a carbon fiber sheet splicing process includes an intermediate transition layer comprising a first sheet and two second sheets, wherein a second sheet is spliced ​​to each of the opposite sides of the first sheet.

[0017] According to a first aspect of the present invention, a carbon fiber sheet splicing process is provided, wherein the carbon filament modulus of the first prepreg is ≥450 GPa, and the fiber areal density of the first prepreg is 75 g / m³. 2 .

[0018] According to a first aspect of the present invention, a carbon fiber sheet splicing process is provided, wherein the first prepreg is M40 carbon fiber.

[0019] According to a first aspect of the present invention, a carbon fiber sheet splicing process is provided, wherein the carbon filament modulus of the second prepreg is ≥750 GPa, and the fiber areal density of the second prepreg is 80 g / m³. 2 .

[0020] A carbon fiber sheet splicing process according to a first aspect embodiment of the present invention further includes the following steps:

[0021] The third prepreg is cut to form the base plate and cover plate, wherein the carbon filament modulus of the third prepreg is ≥300GPa and the fiber areal density of the third prepreg is 25g / m². 2 .

[0022] According to a first aspect of the present invention, a carbon fiber sheet splicing process is provided, wherein the third prepreg is T700 carbon fiber.

[0023] According to a carbon fiber sheet splicing process of the first aspect of the present invention, before the cover plate is laminated onto the intermediate transition layer, the process further includes the following steps:

[0024] The intermediate transition layer is rolled to improve the bonding tightness between the intermediate transition layer and the base plate.

[0025] A carbon fiber plate according to a second aspect of the present invention is manufactured using the carbon fiber plate splicing process described in the first aspect of the present invention.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a flowchart of a carbon fiber sheet splicing process according to one embodiment of the present invention;

[0029] Figure 2 for Figure 1 The flowchart shows how the first and second plates are joined together on the base plate.

[0030] Figure 3 This is a schematic diagram of the structure of a carbon fiber plate according to one embodiment of the present invention.

[0031] Figure label:

[0032] First plate 100, first positioning hole 110;

[0033] Second plate 200, second positioning hole 210;

[0034] Base plate 300, first through hole 310, second through hole 320;

[0035] Cover plate 400. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, front, back, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0038] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0039] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0040] The following is for reference. Figures 1 to 3 A detailed description of a carbon fiber sheet splicing process according to a first aspect embodiment of the present invention will be provided.

[0041] refer to Figures 1 to 3 According to a first aspect of the present invention, a carbon fiber sheet splicing process includes, but is not limited to, the following steps:

[0042] Step S200: Laser cut the first prepreg and the second prepreg to form the first plate 100 and the second plate 200, wherein the carbon filament moduli of the first prepreg and the second prepreg are different.

[0043] Step S300: The first plate 100 and the second plate 200 are spliced ​​on the base plate 300 to form an intermediate transition layer on the base plate 300.

[0044] Step S500: The cover plate 400 is laminated onto the intermediate transition layer, and the cover plate 400, the intermediate transition layer and the bottom plate 300 are hot-pressed to form a semi-finished product.

[0045] Step S600: Laser cut the semi-finished product to form the finished product.

[0046] In the carbon fiber sheet splicing process of this application, the first prepreg is laser-cut to form a first sheet 100, and the second prepreg is laser-cut to form a second sheet 200. Then, the first sheet 100 and the second sheet 200 are spliced ​​on a base plate 300 to form an intermediate transition layer. A cover plate 400 is then laminated onto the intermediate transition layer, and the cover plate 400, the intermediate transition layer, and the base plate 300 are hot-pressed to form a semi-finished product. The semi-finished product is then laser-cut to form the finished product. As can be seen from the above, by laminating the cover plate 400 and the base plate 300 onto the first sheet 100 and the second sheet 200 respectively, the carbon fiber sheet manufactured using the process of this application will not have splicing marks or other appearance problems on its surface, thereby improving the aesthetics of the carbon fiber sheet.

[0047] Understandably, because the carbon filament moduli of the first prepreg and the second prepreg are different, the carbon filament moduli of the first plate 100 and the second plate 200 are also different. After the first plate 100 and the second plate 200 are spliced ​​on the base plate 300 to form an intermediate transition layer, the areas of the intermediate transition layer located in the first plate 100 and the areas located in the second plate 200 have different carbon filament moduli, thus giving the intermediate transition layer multiple areas with different carbon filament moduli. At the same time, since the first plate 100 is formed by laser cutting the first prepreg and the second plate 200 is formed by laser cutting the second prepreg, the edge precision of the first plate 100 and the second plate 200 is higher. After the first plate 100 and the second plate 200 are spliced ​​together, the gap at the junction of the first plate 100 and the second plate 200 is smaller, so that the integrity of the intermediate transition layer is stronger.

[0048] In a specific embodiment of the present invention, step S200 is specifically implemented as follows: laser cutting the first prepreg to form the outer frame of the first plate 100 and opening the first positioning hole 110 on the first plate 100; laser cutting the second prepreg to form the outer frame of the second plate 200 and opening the second positioning hole 210 on the second plate 200. It can be understood that by laser cutting the outer frames of the first plate 100 and the second plate 200, as well as the first positioning hole 110 and the second positioning hole 210, the dimensional accuracy of the first plate 100 and the second plate 200 is improved.

[0049] In some embodiments of the present invention, the base plate 300 is provided with a laser-formed first through hole 310 and a second through hole 320, the first plate 100 is provided with a laser-formed first positioning hole 110, and the second plate 200 is provided with a laser-formed second positioning hole 210. S300 specifically includes, but is not limited to, the following steps:

[0050] Step S310: Install the base plate 300 onto the fixture, and make the first positioning post on the fixture pass through the first through hole 310, and make the second positioning post on the fixture pass through the second through hole 320.

[0051] Step S320: Install the first plate 100 onto the base plate 300, and make the first positioning pin pass through the first positioning hole 110;

[0052] Step S330: Install the second plate 200 onto the base plate 300 and make the second positioning post pass through the second positioning hole 210 to complete the splicing of the second plate 200 and the first plate 100.

[0053] Understandably, the first positioning post on the fixture passes through the first through hole 310 of the base plate 300, and the second positioning post on the fixture passes through the second through hole 320 of the base plate 300, so that the base plate 300 is mounted on the fixture. Then, the first positioning post of the fixture passes through the first positioning hole 110 of the first plate 100, so that the first plate 100 is mounted on the base plate 300, and the second positioning post of the fixture passes through the second positioning hole 210 of the second plate 200, so that the second plate 200 is mounted on the base plate 300. The laser cutting process ensures that the cutting edge is precise and smooth, reducing burrs and subsequent splicing problems, so that the first plate 100 and the second plate 200 can be accurately spliced ​​to form an intermediate transition layer, reducing the possibility of misalignment or gaps between the plates.

[0054] In some embodiments, the intermediate transition layer includes a first plate 100 and two second plates 200, with a second plate 200 spliced ​​to each opposite side of the first plate 100. It is understood that by placing a second plate 200 on each opposite side of the first plate 100, stress distribution is optimized, and the overall uniformity and aesthetics of the board are improved.

[0055] In some embodiments of the present invention, the carbon fiber modulus of the first prepreg is ≥450 GPa, and the fiber areal density of the first prepreg is 75 g / m³. 2 Understandably, this is achieved by using a fiber areal density of 75 g / m². 2 The first prepreg reduces resin wetting resistance, improves interlayer stress transfer efficiency, avoids stress concentration and delamination risks, and has a fiber areal density of 75 g / m². 2 The first prepreg layer is relatively thin, which facilitates layering.

[0056] In some embodiments, the first prepreg is M40 carbon fiber. It is understood that by using M40 carbon fiber as the first prepreg, its cost is relatively low, thereby reducing the manufacturing cost of the carbon fiber sheet.

[0057] In some embodiments of the present invention, the carbon fiber modulus of the second prepreg is ≥750 GPa, and the fiber areal density of the second prepreg is 80 g / m². 2 Understandably, this is achieved by using a fiber areal density of 80 g / m². 2 The first prepreg reduces resin wetting resistance, improves interlayer stress transfer efficiency, avoids stress concentration and delamination risks, and has a fiber areal density of 80 g / m². 2 The first prepreg has a thinner single-layer thickness, which facilitates layup; at the same time, the carbon filament modulus of the second prepreg is greater than or equal to 750, which makes the second plate 200 have better resistance to elastic deformation.

[0058] Specifically, the second prepreg is M80 carbon fiber.

[0059] In some embodiments of the present invention, a carbon fiber sheet splicing process further includes the following steps:

[0060] Step S100: Cut the third prepreg to form the base plate 300 and the cover plate 400, respectively. The carbon fiber modulus of the third prepreg is ≥300 GPa, and the fiber areal density of the third prepreg is 25 g / m². 2 .

[0061] Understandably, the third prepreg is cut to cut out the outer frame of the base plate 300 and the outer frame of the cover plate 400, and then the first plate 100 and the second plate 200 are laid on the base plate 300, and then the cover plate 400 is laid on the intermediate transition layer formed by the first plate 100 and the second plate 200.

[0062] In some embodiments, the third prepreg is T700 carbon fiber. It is understood that using T700 carbon fiber as the third prepreg can improve the overall tensile strength of the carbon fiber sheet, thereby increasing its service life.

[0063] In some embodiments of the present invention, the following steps are included before step S500:

[0064] Step S400: Roll the intermediate transition layer to improve the bonding tightness between the intermediate transition layer and the base plate 300.

[0065] It is understandable that after the first plate 100 and the second plate 200 are laid on the base plate 300, the interlayer air bubbles between the intermediate transition layer and the base plate 300 can be initially eliminated by roller pressing, thereby improving the interlayer bonding force between the intermediate transition layer and the base plate 300.

[0066] The following is a detailed description of a carbon fiber plate according to a second aspect embodiment of the present invention.

[0067] According to a second aspect of the present invention, a carbon fiber plate is manufactured using the carbon fiber sheet splicing process described in the first aspect of the present invention. It is understood that the carbon fiber plate manufactured using the above-described carbon fiber sheet splicing process achieves different carbon filament moduli in different areas, and also avoids the problem of splicing marks that occur after splicing carbon fiber plates with different moduli, thereby making the carbon fiber plate manufactured by the carbon fiber sheet splicing process of this application more aesthetically pleasing.

[0068] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A carbon fiber sheet splicing process, characterized in that, It includes the following steps: The first prepreg and the second prepreg are laser-cut to form a first plate and a second plate, respectively, wherein the carbon filament moduli of the first prepreg and the second prepreg are different. The first plate and the second plate are spliced ​​together on the base plate to form an intermediate transition layer on the base plate; The cover plate is laminated onto the intermediate transition layer, and the cover plate, the intermediate transition layer and the base plate are hot-pressed to form a semi-finished product; The semi-finished product is laser-cut to form the finished product.

2. The carbon fiber sheet splicing process according to claim 1, characterized in that, The base plate has a first through hole and a second through hole formed by laser. The first plate has a first positioning hole formed by laser, and the second plate has a second positioning hole formed by laser. The first plate and the second plate are spliced ​​on the base plate, including the following steps: The base plate is mounted on the fixture, and the first positioning post on the fixture passes through the first through hole, and the second positioning post on the fixture passes through the second through hole; The first plate is installed on the base plate, and the first positioning post is inserted through the first positioning hole; The second plate is installed on the base plate, and the second positioning post is inserted through the second positioning hole to complete the splicing of the second plate and the first plate.

3. A carbon fiber sheet splicing process according to claim 1 or 2, characterized in that, The intermediate transition layer includes a first plate and two second plates, with one second plate spliced ​​to each of the opposite sides of the first plate.

4. The carbon fiber sheet splicing process according to claim 1, characterized in that, The carbon fiber modulus of the first prepreg is ≥450 GPa, and the fiber areal density of the first prepreg is 75 g / m³. 2 .

5. The carbon fiber sheet splicing process according to claim 4, characterized in that, The first prepreg is M40 carbon fiber.

6. The carbon fiber sheet splicing process according to claim 1, characterized in that, The carbon fiber modulus of the second prepreg is ≥750 GPa, and the fiber areal density of the second prepreg is 80 g / m². 2 .

7. The carbon fiber sheet splicing process according to claim 1, characterized in that, It also includes the following steps: The third prepreg is cut to form the base plate and the cover plate, wherein the carbon filament modulus of the third prepreg is ≥300 GPa and the fiber areal density of the third prepreg is 25 g / m². 2 .

8. The carbon fiber sheet splicing process according to claim 7, characterized in that, The third prepreg is T700 carbon fiber.

9. The carbon fiber sheet splicing process according to claim 1, characterized in that, Before the cover plate is laminated onto the intermediate transition layer, the following steps are also included: The intermediate transition layer is rolled to improve the bonding tightness between the intermediate transition layer and the base plate.

10. A carbon fiber plate, characterized in that, It is manufactured using the carbon fiber sheet splicing process described in any one of claims 1 to 9.

Images