Carbon fiber cushion and negative pressure forming method thereof

Abstract

The invention relates to a carbon fiber cushion and a negative pressure forming method thereof, the carbon fiber cushion is used for forming the carbon fiber cushion, the carbon fiber cushion comprises a cushion body and a sitting bow, and the cushion body and the sitting bow are both made of carbon fiber materials. The negative pressure forming method of the carbon fiber cushion comprises the following steps of 1, material cutting, 2, cushion body pre-forming and seat arch pre-forming. 3, (1) carrying out vacuum tank negative pressure forming on the cushion body; (2) carrying out compression molding on the seat arch; (4) carrying out surface treatment; (5) spraying primer; and (7) finish paint spraying: after assembly, the finish paint is sprayed on the surface of the product. By means of the negative pressure forming method, the cushion which is light in weight, comfortable and attractive can be produced, and the cushion has the good market competitive advantage and is high in production yield and stable in product quality. And the method is suitable for producing the carbon fiber seat cushions with various different-color plating layers, and the color consistency can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of seat cushions, and in particular to a carbon fiber seat cushion and a negative pressure molding method thereof. Background Art

[0002] Bicycle is a green and environmentally friendly means of transportation. With the development of the times, bicycle is no longer just a means of transportation, but also a kind of fitness equipment. At the same time, bicycle itself is also a sports competitive sport, such as road cycling, mountain bike racing, track cycling, stunt bike racing, etc., and the bicycle seat is one of the important parts that affect riding.

[0003] A bicycle seat is a bicycle accessory that comes into direct contact with the buttocks when riding. It includes a seat body and a seat bow disposed below the bottom of the seat body. The seat body is also provided with a buffer layer and a surface layer. However, the traditional seat body and seat bow are usually made of metal or plastic, which makes it difficult to combine the advantages of lightness, comfort and aesthetics at the same time. Currently, there are also a few seat bodies and seat bows made of carbon fiber materials, which can combine the advantages of lightness, comfort and aesthetics.

[0004] However, the current carbon fiber cushions are all molded, which may cause cracks, delamination, lack of material and other defects, and the defect rate is high. And when processing products with light-colored coatings (such as silver) on the outer surface, during the molding process, the black inner layer will show through the light-colored outer layer, resulting in the problem of different shades of color on the outer surface. Summary of the invention

[0005] Based on this, it is necessary to provide a carbon fiber seat cushion and a negative pressure molding method thereof to address the deficiencies in the prior art.

[0006] A negative pressure molding method for a carbon fiber seat cushion comprises the following steps:

[0007] Step 1: Cutting materials: providing a carbon fiber substrate, cutting out the cushion base layer, the combination layer and the long strip seat bow base layer;

[0008] Step 2: Pre-molding

[0009] ③. Preform the seat cushion body and attach the combined layer to the seat cushion base.

[0010] ④. Pre-forming the seat bow. The bottom surface of the seat bow base is a non-stick layer, and the inner surface is an adhesive layer. One side of the seat bow base is flipped over to the other side for lamination, so that the non-stick layer faces upward, and a partial adhesive area is reserved on the other side. Roll the tube from the non-stick layer side to the adhesive area side, and then attach the adhesive area to the rolled tube to fix the tube, and then fold the rolled tube from the middle to form a V-shaped tube.

[0011] Step 3: Molding

[0012] ①. The seat cushion body is negatively pressurized by a vacuum tank. A vacuum mold and a vacuum tank device are provided. The vacuum mold includes a template and a mold cavity arranged on the template. The seat cushion body is fitted into the mold cavity after preforming. Then, a demoulding cloth is covered on the vacuum mold. A vacuum bag is put on the outside of the mold and the vacuum bag is sealed. A vacuum port is provided on the vacuum bag. A vacuum device is connected to the vacuum port to evacuate the vacuum bag. The vacuum mold after evacuation is placed in the vacuum tank device for negative pressure molding. Three installation areas are provided on the formed seat cushion body.

[0013] ②, the sitting bow is molded and formed, providing a molding die, the molding die comprises an upper die and a lower die corresponding to the upper and lower die, the top surface of the lower die is provided with a lower molding cavity, the bottom surface of the upper die is provided with an upper molding cavity, the lower molding cavity and the upper molding cavity are arranged opposite to each other in the upper and lower directions; the V-shaped tube of the sitting bow preformed is placed in the molding cavity, and the mold is closed for hot pressing; the sitting bow after molding is arranged in a V-shape, which comprises two circular tube parts, a connecting part connected to the two circular tube parts, and an embedded part arranged outside the circular tube part, the connecting part is arranged in a V-shape; a fixing area is arranged on the bottom surface of the connecting part;

[0014] Step 4: Surface treatment: take out the formed product from the vacuum mold and the compression mold, and perform burr removal and roughening treatment on the surface of the product;

[0015] Step 5: Spray primer on the outer surface of the product;

[0016] Step 6: Assemble, install the connecting part and two embedded parts of the seat bow on the installation area of ​​the cushion body respectively;

[0017] Step 7: Spray topcoat: After assembly, spray topcoat on the product surface.

[0018] Furthermore, in step two, the cushion body is preformed using an auxiliary jig plate, the cushion base layer is adhered to the auxiliary jig plate, and the combined layer is adhered to the cushion base layer from the hollow position of the auxiliary jig plate; in step three, the preformed cushion body is removed from the auxiliary jig plate and transferred to the mold cavity.

[0019] Furthermore, in step three, it also includes injection molding of a connecting piece; a limiting groove is set on the inner side of the connecting piece; in step six, the connecting piece is installed on the seat cushion body, and the two embedded parts of the seat bow are respectively installed in the limiting grooves of the two connecting parts.

[0020] Furthermore, a plurality of positioning holes are arranged on the bottom surface of the connecting member, a plurality of mounting holes are arranged on the mounting area of ​​the seat cushion body, and a plurality of fixing holes are arranged on the bottom surface of the connecting portion of the seat bow.

[0021] Furthermore, the assembling step also includes a glue brushing step, and the fitting positions between the seat bow, the connecting piece and the seat cushion body are all brushed with a glue layer.

[0022] Furthermore, in step six, first apply glue to fit the connecting part to the cushion body, and then tighten a screw into the corresponding positioning hole and the mounting hole; apply glue to the seat bow embedding part and install it into the limiting groove, apply glue to the connecting part and tighten one of the screws to fix it to the corresponding mounting area on the cushion body; bake it after the preliminary installation, and finally tighten the other screws.

[0023] Furthermore, a labeling process is included between step five and step six, in which a scale mark is attached to the seat bow, and a protective layer is wrapped around the scale mark, which is then dried and then sprayed with paint.

[0024] Furthermore, in step five, the primer needs to be sprayed twice, wherein the first primer is a transparent primer.

[0025] Furthermore, in step one, the carbon fiber substrate is formed by laminating multiple layers of carbon fiber cloth.

[0026] A carbon fiber seat cushion, comprising a seat cushion body and a seat bow, and also comprising two connecting members, the seat cushion body and the seat bow are both made of carbon fiber material; three installation areas are arranged on the seat cushion body, and a plurality of installation holes are arranged on the installation areas; a limiting groove is arranged on the inner side surface of the connecting member, and a positioning area is arranged on the bottom surface, and a plurality of positioning holes are arranged on the positioning area, and the plurality of positioning holes and the mounting holes on the corresponding mounting areas are arranged in a one-to-one correspondence; the seat bow is arranged in a V-shape, comprising two circular tube parts, a connecting part connected to the circular tube part and an embedding part arranged outside the circular tube part, and the connecting part is arranged in a V-shape; the circular tube part is arranged in a hollow tubular shape, and the connecting part and the embedding part are both arranged in a flat shape; the cross-sectional size of the embedding part is smaller than the cross-sectional size of the end part of the circular tube part, and forms a limiting groove with the end part of the circular tube part The circular tube portion comprises a middle portion and an extension portion arranged on the outside of the middle portion, the inner end of the extension portion is connected to the outer end of the middle portion, the outer end of one extension portion is connected to the embedded portion, and the outer end of the other extension portion is connected to the end of the connecting portion; and the extension portion is inclined, the two extension portions on the same circular tube portion are inclined along the same side, and the two extension portions are arranged in an eight-shaped shape; in addition, a scale mark is also arranged on the outer surface of the circular tube portion, a fixing area is arranged on the bottom end surface of the connecting portion, a plurality of fixing holes are arranged on the fixing area, and the plurality of fixing holes and the plurality of mounting holes on the corresponding mounting area are arranged in a one-to-one correspondence; during installation, the two embedded portions of the seat bow are respectively embedded in the limiting groove of a connecting piece, and then the connecting piece and the connecting portion of the seat bow are respectively locked on the seat cushion body by screws.

[0027] In summary, the carbon fiber seat cushion negative pressure molding method of the present invention is to vacuum negative pressure mold the seat cushion body, roll the seat bow and then hot press mold the seat bow, and then perform shape processing, scale labeling, assembly and other processing on the two. Finally, a seat cushion that is lightweight, comfortable and beautiful is produced. This product has a good market competitive advantage, a high production yield and stable product quality. And this method is suitable for the production of carbon fiber seat cushions with various color coatings, which can ensure color consistency and avoid the problem of different color depths. The practicality of the present invention is strong and has a strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the carbon fiber seat cushion of the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the back structure of the middle seat cushion;

[0030] Figure 3 for Figure 2 Partially exploded diagram of the center bow and mounting buckle;

[0031] Figure 4 It is a schematic diagram of the metallurgy structure;

[0032] Figure 5 It is a structural schematic diagram of a vacuum mold;

[0033] Figure 6 This is a schematic diagram of the structure after the vacuum mold is installed in the vacuum tank;

[0034] Figure 7 This is a schematic diagram of the decomposition of the compression molding die.

[0035] Figure 8 for Figure 7 Schematic diagram of the structure of the middle mold from another perspective. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] like Figures 1 to 3 As shown, the present invention provides a carbon fiber seat cushion, which includes a seat cushion body 10, a seat bow 20, two connecting pieces 30 and a screw 40. The seat cushion body 10 and the seat bow 20 are both made of carbon fiber materials, and the connecting piece 30 is made of plastic.

[0038] The cushion body 10 is roughly triangular in shape, and a mounting area is provided at each of the three corner positions of the cushion body 10. The inner surface of the mounting area is provided with a groove, and three mounting holes 11 are provided in the groove. The inner side surface of the connecting member 30 is provided with a limiting groove 31, and the bottom surface is provided with a positioning area, and the positioning area is provided with three positioning holes (not shown in the figure). The three positioning holes are arranged in a one-to-one correspondence with the mounting holes 11 on the corresponding mounting area. The seat bow 20 is arranged in a V-shape, and includes two circular tube parts 21, a connecting part 22 connected to the circular tube part 21, and an embedded part 23 arranged outside the circular tube part 21. The connecting part 22 is arranged in a V-shape.

[0039] The circular tube portion 21 is arranged in a hollow tubular shape, and the connecting portion 22 and the embedded portion 23 are arranged in a flat shape. The cross-sectional dimension of the embedded portion 23 is smaller than the cross-sectional dimension of the end portion of the circular tube portion 21, and forms a limiting step surface with the end portion of the circular tube portion 21 to facilitate installation and limiting. The circular tube portion 21 includes a middle portion 211 and an extension portion 212 arranged outside the middle portion 211, the inner side end of the extension portion 212 is connected to the outer side end of the middle portion 211, wherein the outer side end of one extension portion 212 is connected to the embedded portion 23, and the outer side end of the other extension portion 212 is connected to the end of the connecting portion 22. The extension portion 212 is arranged in an inclined manner, and the two extension portions 212 on the same circular tube portion 21 are inclined along the same side, and the two extension portions 212 are arranged in an eight-shaped shape. In addition, a scale mark 24 is also arranged on the outer surface of the circular tube portion 21. A fixing area is disposed on the bottom end surface of the connecting portion 22 , and three fixing holes are disposed on the fixing area. The three fixing holes are disposed in a one-to-one correspondence with the three mounting holes 11 on the corresponding mounting area.

[0040] During installation, the two embedded parts 23 of the seat bow 20 are respectively embedded in the limiting grooves 31 of a connecting member 30, and then the connecting member 30 and the connecting part 22 of the seat bow 20 are respectively locked in the three grooves of the seat cushion body 10 by screws 40.

[0041] In addition, the present invention also discloses a carbon fiber seat cushion negative pressure molding method for the carbon fiber seat cushion. The carbon fiber seat cushion negative pressure molding method specifically comprises the following steps:

[0042] Step 1: Cutting materials.

[0043] ①, forming the base material of the cushion body 10, providing a carbon fiber base material, cutting out the cushion base layer (not shown) and the combined layer 101 on a cutting machine, the combined layer 101 is used to fit on the base layer. When the combined layer 101 is small, it can be punched out into the required shape by a punching machine. In this embodiment, the cutting machine and the punching machine are both conventional forming equipment. The shape of the base layer is basically the same as that of the cushion, and the structure of the combined layer 101 is not limited, and it is set according to the actual needs of the product.

[0044] ②, forming the base material of the seat bow 20, providing a carbon fiber base material, cutting out a long strip of the seat bow 20 base layer of the required size, the length of the seat bow 20 base layer should be longer than the overall length of the V-shaped seat bow 20.

[0045] In this embodiment, the carbon fiber substrate is formed by laminating multiple layers of carbon fiber cloth; it can be set to be a laminate of 6 layers, 8 layers or other layers of carbon fiber cloth as required; here, the specific number of layers is not limited.

[0046] Step 2: Pre-molding

[0047] ①, the cushion body 10 is preformed, and an auxiliary jig plate 50 (such as Figure 4 As shown in FIG. 1 , the shape of the auxiliary jig plate 50 is the same as that of the cushion base layer, except that the position on the auxiliary jig plate 50 corresponding to the bonding combination layer 101 is hollowed out. The bottom surface of the cushion base layer has an adhesive layer. When in use, the cushion base layer is bonded to the auxiliary jig plate 50, and then the combination layer 101 is accurately aligned and bonded to the cushion base layer from the hollow position on the back of the auxiliary jig plate 50.

[0048] ②, the seat bow 20 is preformed, and one side edge of the seat bow 20 base is laminated toward the other side, and a partial adhesive area is reserved on the other side. In this embodiment, an adhesive layer is formed on the inner surface of the seat bow 20 base, and the other end can be directly flipped inward for lamination. Then, the laminated area is rolled from the laminating area toward the laminating area to roll the laminating area into a tube, and finally, the adhesive layer of the laminating area is laminated on the rolled tube, and then the rolled tube is folded back from the middle to form a V-shaped tube.

[0049] Step 3: Molding

[0050] ①, the cushion vacuum tank negative pressure molding, provide vacuum mold 60 (such as Figure 5 As shown) and the vacuum tank device 70 (as Figure 6 As shown), the vacuum mold 60 includes a template and a mold cavity 61 arranged on the template. In the present embodiment, the mold cavity 61 is provided with a plurality of rows, and the adjacent mold cavities 61 in each row are designed in reverse, so that the space can be fully utilized and the use efficiency can be improved. The preformed recoil cushion body is removed from the auxiliary jig plate 50 and affixed to the mold cavity 61. Then, a demolding cloth is covered on the vacuum mold 60, and then a vacuum bag is put on the outside of the mold to seal the vacuum bag. A vacuum extraction interface is provided on the vacuum bag, and a vacuum extraction device is connected to the vacuum extraction interface to vacuumize the vacuum bag. After vacuumization, the vacuum extraction interface is blocked. A heating device and a vacuum tube 71 are provided in the vacuum tank device 70. A cylindrical cavity is provided in the vacuum tank device 70. The cavity is extended laterally, and relative limiting protrusions 72 are provided on its side walls.

[0051] When in use, the two ends of the vacuum mold 60 are mounted on the two limiting protrusions 72, and the vacuum tube 71 is inserted into the vacuum interface on the vacuum mold 60. Multiple layers of limiting protrusions 72 are arranged in the cavity of each vacuum tank device 70, so that multiple vacuum molds 60 can be vacuumed and pressed at one time. After molding, the vacuum mold is taken out of the vacuum tank device 70, and after cooling, the vacuum bag and the demoulding cloth are opened, and the molded product is taken out from the vacuum mold 60.

[0052] ②, the seat bow 20 is molded and formed by providing a molding die (such as Figure 7 and Figure 8 As shown in the figure, the compression mold comprises an upper mold 81 and a lower mold 82 corresponding to the upper and lower molds. A lower molding cavity 821 is arranged on the top surface of the lower mold 82, and an upper molding cavity 811 is arranged on the bottom surface of the upper mold 81. The lower molding cavity 821 is arranged opposite to the upper molding cavity 811, and the adjacent molding cavities of the upper molding cavity 811 and the lower molding cavity 821 are arranged in reverse, so that the space can be fully utilized. In addition, a heating device is also arranged on the compression mold, and the heating device can heat the upper mold 81 and the lower mold 82 to perform hot pressing molding on the preform of the sitting bow 20. After molding, it is taken out after cooling, and then the molded sitting bow 20 is roughened, specifically: the molded product is put into the yarn rolling machine, and it is taken out after rolling for 3-4 hours, so that the sitting bow 20 is roughened in place.

[0053] ③. Injection molding of the connector 30: The connector 30 is molded by an injection mold.

[0054] Step 4: Surface treatment, roughing, use a grinding wheel to remove the excess rough edges on the seat cushion and the seat bow 20 until they are smooth and free of barbs. Then, perform rough grinding on the product surface, fill the holes on the product after rough grinding, and then perform fine grinding.

[0055] Step 5: Spray primer; clean the surface of the product after fine grinding, spray the first primer, and then let it stand for 30 to 60 minutes to dry it before spraying the second primer; put the product sprayed with primer into the baking room for baking at 80° for 2 hours; after drying, fine grind it again to check for sand holes, fill the sand holes with transparent fillers, dry it and grind it flat. In this embodiment, the first primer spray is transparent primer, so that it is easy to find holes on the surface and fill them in time.

[0056] Step 6: labeling: stick the scale mark 24 on the middle part 211 of the seat bow 20, and then dry it to make the fit more stable.

[0057] Step 7: Spray granular paint, and apply a protective layer on the outer surface of the scale mark 24, with the ends of the protective layer aligned with the ends of the scale mark 24. In this embodiment, the protective layer is a paper layer. Spray granular paint on the area of ​​the bow 20 outside the protective layer, then dry and dry it, and then remove the protective layer; then apply a new protective layer, and the two protective layers need to be aligned left and right to avoid ghosting later.

[0058] Step 8: Assemble. First, apply glue to fix the two connecting pieces 30 in the groove of the seat cushion, and then install a screw to prevent the connecting piece 30 from shifting. Insert the embedding part 23 of the seat bow 20 into the limiting groove 31 of the connecting piece 30, and further apply glue to fix the two at the connection position. Then, apply glue to the connecting part 22 of the seat bow 20 and fit it to the corresponding installation area of ​​the seat cushion, and then screw it in to fix it. After the initial installation, bake it to completely cure the glue, and then screw all other screws. In this embodiment, the above baking is a low-temperature baking at 60-80 degrees.

[0059] Step 9, spraying topcoat: After assembly, spray matte topcoat on the surface of the product, and then bake it in a baking oven at 80° for 2 hours; finally, remove the protective layer on the outer surface of the scale mark 24 to form the required complete product.

[0060] In this embodiment, before spraying the topcoat, the assembled product needs to be inspected and the glue overflowed portion of the product needs to be polished. When the glue overflows on the connecting member 30, polishing cannot be performed.

[0061] In summary, the carbon fiber seat cushion negative pressure molding method of the present invention is to vacuum negative pressure mold the seat cushion body 10, roll the seat bow 20 and then perform shape processing, affix scale marks 24, and assemble the two. Finally, a seat cushion that is lightweight, comfortable and beautiful is produced. This product has a good market competitive advantage, a high production yield rate, and stable product quality. And this method is suitable for the production of carbon fiber seat cushions with various color coatings, which can ensure color consistency and avoid the problem of different color depths. The practicality of the present invention is strong and has a strong promotion significance.

[0062] The above-mentioned embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A negative pressure molding method for a carbon fiber seat cushion, characterized in that: The steps include: Step 1: Cutting materials: providing a carbon fiber substrate, cutting out the cushion base layer, the combination layer and the long strip seat bow base layer; Step 2: Pre-molding ① Preform the cushion body and attach the combined layer to the cushion base. ②, the seat bow preform, the bottom surface of the seat bow base is a non-stick layer, the inner surface is an adhesive layer, one side of the seat bow base is folded to the other side to fit, so that the non-stick layer faces upward, and a part of the adhesive area is reserved on the other side; the tube is rolled from the non-stick layer side to the adhesive area side, and the adhesive area is fitted on the rolled tube to fix the tube, and then the rolled tube is folded back from the middle to form a V-shaped tube; Step 3: Molding ①. The seat cushion body is negatively pressurized by a vacuum tank. A vacuum mold and a vacuum tank device are provided. The vacuum mold includes a template and a mold cavity arranged on the template. The seat cushion body is fitted into the mold cavity after preforming. Then, a demoulding cloth is covered on the vacuum mold. A vacuum bag is put on the outside of the mold and the vacuum bag is sealed. A vacuum port is provided on the vacuum bag. A vacuum device is connected to the vacuum port to evacuate the vacuum bag. The vacuum mold after evacuation is placed in the vacuum tank device for negative pressure molding. Several installation areas are provided on the formed seat cushion body. ②, the sitting bow is molded and formed, providing a molding die, the molding die comprises an upper die and a lower die corresponding to the upper and lower die, the top surface of the lower die is provided with a lower molding cavity, the bottom surface of the upper die is provided with an upper molding cavity, the lower molding cavity and the upper molding cavity are arranged opposite to each other in the upper and lower directions; the V-shaped tube of the sitting bow preformed is placed in the molding cavity, and the mold is closed for hot pressing; the sitting bow after molding is arranged in a V-shape, which comprises two circular tube parts, a connecting part connected to the two circular tube parts, and an embedded part arranged outside the circular tube part, the connecting part is arranged in a V-shape; a fixing area is arranged on the bottom surface of the connecting part; Step 4: Surface treatment: take out the formed product from the vacuum mold and the compression mold, and perform burr removal and roughening treatment on the surface of the product; Step 5: Spray primer on the outer surface of the product; Step 6: Assemble, install the connecting part and two embedded parts of the seat bow on the installation area of ​​the cushion body respectively; Step 7: Spray topcoat: After assembly, spray topcoat on the product surface.

2. The negative pressure molding method of a carbon fiber seat cushion according to claim 1, characterized in that: In step two, the seat cushion body is preformed using an auxiliary jig plate, the bottom surface of the seat cushion base layer is provided with an adhesive layer, the seat cushion base layer is adhered to the auxiliary jig plate, and the combined layer is adhered to the seat cushion base layer from the hollow position of the auxiliary jig plate; in step three, the preformed seat cushion body is torn off the auxiliary jig plate and transferred to the mold cavity.

3. The negative pressure molding method of a carbon fiber seat cushion according to claim 1, characterized in that: In step three, it also includes injection molding of a connecting piece; a limiting groove is set on the inner side of the connecting piece; in step six, the connecting piece is installed on the seat cushion body, and the two embedded parts of the seat bow are respectively installed in the limiting grooves of the two connecting parts.

4. The negative pressure molding method of a carbon fiber seat cushion according to claim 3, characterized in that: A plurality of positioning holes are arranged on the bottom surface of the connecting member, a plurality of mounting holes are arranged on the mounting area of ​​the cushion body, and a plurality of fixing holes are arranged on the bottom surface of the connecting part of the seat bow.

5. The negative pressure molding method of a carbon fiber seat cushion according to claim 4, characterized in that: The assembly step also includes a glue brushing step, in which a glue layer is brushed on the fitting positions between the seat bow, the connecting piece and the seat cushion body.

6. The negative pressure molding method of a carbon fiber seat cushion according to claim 5, characterized in that: In step six, first apply glue to fit the connecting part to the cushion body, and then tighten a screw into the corresponding positioning hole and the mounting hole; apply glue to the seat bow embedding part and install it into the limiting groove, apply glue to the connecting part and tighten one of the screws to fix it to the corresponding mounting area on the cushion body; bake it after the initial installation, and finally tighten the other screws.

7. The negative pressure molding method of a carbon fiber seat cushion according to claim 1, characterized in that: A labeling process is also included between step five and step six, in which a scale mark is attached to the seat bow, and a protective layer is wrapped around the scale mark, which is then dried and then sprayed with paint.

8. The negative pressure molding method of a carbon fiber seat cushion according to claim 1, characterized in that: In step five, the primer needs to be sprayed twice, wherein the first primer is a transparent primer.

9. The negative pressure molding method of a carbon fiber seat cushion according to claim 1, characterized in that: In step one, the carbon fiber substrate is formed by laminating multiple layers of carbon fiber cloth.

10. A carbon fiber seat cushion, comprising a seat cushion body and a seat bow, characterized in that: The seat bow is also provided with two connecting pieces, the seat cushion body and the seat bow are both made of carbon fiber material; three installation areas are provided on the seat cushion body, and a plurality of installation holes are provided on the installation areas; a limiting groove is provided on the inner side surface of the connecting piece, and a positioning area is provided on the bottom surface, and a plurality of positioning holes are provided on the positioning area, and the plurality of positioning holes and the mounting holes on the corresponding installation areas are arranged in a one-to-one correspondence; the seat bow is arranged in a V-shape, and comprises two circular tube parts, a connecting part connected to the circular tube part and an embedding part arranged on the outside of the circular tube part, and the connecting part is arranged in a V-shape; the circular tube part is arranged in a hollow tubular shape, and the connecting part and the embedding part are both arranged in a flat shape; the cross-sectional dimension of the embedding part is smaller than the cross-sectional dimension of the end part of the circular tube part, and forms a limiting step surface with the end part of the circular tube part, and the circular tube part is provided in a V-shaped manner. The part includes a middle part and an extension part arranged on the outside of the middle part, the inner end of the extension part is connected to the outer end of the middle part, the outer end of one extension part is connected to the embedded part, and the outer end of the other extension part is connected to the end of the connecting part; and the extension part is inclined, the two extension parts on the same circular tube part are inclined along the same side, and the two extension parts are arranged in an eight-shaped shape; in addition, a scale mark is also arranged on the outer surface of the circular tube part, and a fixing area is arranged on the bottom end surface of the connecting part, and a plurality of fixing holes are arranged on the fixing area, and the plurality of fixing holes and the plurality of mounting holes on the corresponding mounting area are arranged in a one-to-one correspondence; during installation, the two embedded parts of the seat bow are respectively embedded in the limiting groove of a connecting piece, and then the connecting piece and the connecting part of the seat bow are respectively locked on the seat cushion body by screws.

Images