CN215620124U - Be used for fashioned tuber pipe of carbon fiber rim - Google Patents
Be used for fashioned tuber pipe of carbon fiber rim Download PDFInfo
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- CN215620124U CN215620124U CN202121819744.8U CN202121819744U CN215620124U CN 215620124 U CN215620124 U CN 215620124U CN 202121819744 U CN202121819744 U CN 202121819744U CN 215620124 U CN215620124 U CN 215620124U
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- carbon fiber
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Abstract
The utility model discloses an air pipe for forming a carbon fiber rim, which comprises a first pipe section, a second pipe section and a third pipe section which are sequentially connected, wherein the second pipe section corresponds to an air passing channel of a carbon fiber forming die, and the tail end of the third pipe section is provided with an opening and is used for connecting an air nozzle; the pipe diameter of the second pipe section is smaller than that of the first pipe section and the third pipe section. The utility model can avoid the phenomenon that the pipe wall is folded and piled up at the part of the air pipe positioned in the air passage of the carbon fiber rim forming die, thereby avoiding blockage and improving the air inlet and exhaust effects of rim forming.
Description
Technical Field
The utility model relates to the technical field of carbon fiber rim forming, in particular to an air pipe for forming a carbon fiber rim.
Background
Because of the characteristics of small specific gravity, good rigidity, high strength and the like, the carbon fiber material is favored in the production of bicycles. In addition to the bicycle frame made of carbon fiber materials, the rim can also be made of carbon fiber materials.
The existing carbon fiber rim forming method generally comprises the following steps: firstly, directly rolling according to a designed rim shape to complete carbon fiber prepreg, then placing the carbon fiber prepreg into a forming die for preforming, preforming an R angle of the rim by adopting a round preforming bar, and finally, carrying out curing treatment to form a carbon fiber rim finished product. When the carbon fiber prepreg is placed into a forming die for preforming, the carbon fiber prepreg is internally supported and formed by an air pipe filled with air, the air pipe is made of a long strip-shaped flexible material, and one end of the air pipe is opened and is used for being connected with an air nozzle. In the forming process, one end of the opening of the air pipe needs to penetrate out of the air passing channel of the forming die and then is connected with the air nozzle. As shown in fig. 1, the air pipe 1 ' in the prior art is a straight pipe body with a large pipe diameter, and the pipe diameter of the air passage 2 ' of the forming mold is very small, so that a plurality of pipe wall folds 11 ' can appear on the part of the air pipe 1 ' located in the air passage 2 ', and a stacking phenomenon is formed, as shown in fig. 2, so that the cross-sectional area of the part of the air pipe 1 ' located in the air passage 2 ' and capable of ventilating is small, the blockage easily occurs, the air intake and exhaust of rim forming are affected, and the process stability of the rim is extremely unfavorable. In order to solve the problem, the traditional method is to partially elongate and thin the air pipe at the air passing channel, but the uncertain factors of artificial elongation and thinning are large, and air leakage is easily caused by the fact that the air pipe is too thin when pulled.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems in the prior art, the utility model provides the air pipe for forming the carbon fiber rim, which can reduce accumulation and blockage and improve the air inlet and outlet effect.
The technical scheme adopted by the utility model for solving the technical problems is as follows: an air pipe for forming a carbon fiber rim comprises a first pipe section, a second pipe section and a third pipe section which are sequentially connected, wherein the second pipe section corresponds to an air passing channel of a carbon fiber forming die, and the tail end of the third pipe section is provided with an opening and is used for connecting an air nozzle; the pipe diameter of the second pipe section is smaller than that of the first pipe section and the third pipe section.
Furthermore, the pipe diameter of the second pipe section is smaller than or equal to the pipe diameter of the air passing channel of the carbon fiber forming die.
Furthermore, the transition part between the first pipe section and the second pipe section is a first reducing pipe section, and the pipe diameter of the first reducing pipe section is gradually reduced from the first pipe section to the second pipe section; the transition part between the second pipe section and the third pipe section is a second reducing pipe section, and the pipe diameter of the second reducing pipe section is gradually reduced from the third pipe section to the second pipe section.
Further, the pipe diameter of the second pipe section is smaller than half of the pipe diameters of the first pipe section and the third pipe section.
Furthermore, the local part of the air pipe is subjected to unilateral or bilateral hot-pressing edge sealing to form the second pipe section.
Furthermore, the air pipe forms two symmetrical edge sealing lines through bilateral hot-pressing edge sealing, each edge sealing line respectively comprises a straight edge sealing line positioned in the length direction of the air pipe and arc edge sealing lines positioned at two ends of the straight edge sealing line, and the circle center of each arc edge sealing line faces outwards; the straight edge sealing lines of the two edge sealing lines form two edges of the second pipe section.
Further, the pipe diameters of the first pipe section and the third pipe section are consistent.
Compared with the prior art, the utility model has the following beneficial effects:
1. because the pipe diameter of the second pipe section corresponding to the air passing channel of the air pipe and the carbon fiber rim forming die is smaller than the pipe diameters of the first pipe section and the third pipe section, when the second pipe section penetrates through the air passing channel of the carbon fiber rim forming die, the fold accumulation of the pipe wall can be reduced, and the blockage is reduced.
2. The pipe diameter of the second pipe section is smaller than or equal to the pipe diameter of the air passing channel of the carbon fiber forming die, so that when the second pipe section is arranged in the air passing channel of the carbon fiber rim forming die in a penetrating mode, the phenomenon that pipe walls are piled up can be completely avoided, blocking is avoided, and air inlet and exhaust effects of rim forming are greatly improved.
3. The first pipe section with the transition part between the second pipe section is first reducing pipe section, the transition part between second pipe section and the third pipe section is second reducing pipe section, makes the transition of second pipe section and first pipe section, third pipe section smooth and easy, can keep the smoothness of tuber pipe outer wall to in the poling operation.
4. The second pipe section is formed by hot-pressing and edge sealing on the local part of the air pipe on a single side or two sides, so that the air pipe is simple in processing technology and high in processing efficiency.
The utility model is further explained in detail with the accompanying drawings and the embodiments; however, an air duct for carbon fiber rim molding according to the present invention is not limited to the embodiment.
Drawings
FIG. 1 is a schematic structural view of a prior art air duct;
FIG. 2 is a schematic cross-sectional view of a prior art air duct in cooperation with an air passage of a carbon fiber rim forming die;
FIG. 3 is a schematic view of the air duct of the present invention with the edge sealed;
FIG. 4 is a schematic view of the air duct of the present invention after edge sealing;
FIG. 5 is a schematic cross-sectional view of the air duct of the present invention mated with the air passage of a carbon fiber rim forming die;
the air pipe comprises a pipe body, a pipe wall, an air channel, a pipe wall fold, a pipe wall pass-through channel, a pipe body, a pipe wall fold, a pipe wall pass-through channel, a pipe body, a pipe section 11, a first pipe section, a pipe section 12, a second pipe section, a pipe section 13, a third pipe section, a pipe section 14, a first reducing pipe section, a pipe section 15, a second reducing pipe section, a pipe section 2, a gas pass-through channel, a sealing edge line 3, a straight sealing edge line 31, an arc sealing edge line 32, an arc sealing edge line 33 and redundant parts.
Detailed Description
The terms "first," "second," "third," and the like in this disclosure are used solely to distinguish between similar items and not necessarily to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance.
Referring to fig. 3-5, the air duct for forming a carbon fiber rim according to the present invention includes a first duct section 11, a second duct section 12 and a third duct section 13 connected in sequence, when the tail end of the first duct section 11 is formed in a closed manner, the first duct section 11 is located in a forming cavity of a carbon fiber forming mold, and the second duct section 12 corresponds to the air passage 2 of the carbon fiber forming mold, that is, the second duct section 12 is inserted into the air passage 2 of the carbon fiber forming mold; the end of the third tube section 13 is open and is used for connecting an air tap. The pipe diameter of the second pipe section 12 is smaller than the pipe diameters of the first pipe section 11 and the third pipe section 13, so that when the second pipe section 12 is arranged in the air passing channel 2 of the carbon fiber forming die in a penetrating mode, the phenomenon that the pipe wall of the second pipe section 12 is folded and piled up to cause blockage can be reduced. Preferably, the pipe diameter of the second pipe section 12 is smaller than or equal to the pipe diameter of the air passage 2 of the carbon fiber rim forming die, so that when the second pipe section 12 is arranged in the air passage 2 of the carbon fiber rim forming die in a penetrating mode, the phenomenon of pipe wall accumulation can be completely avoided, blocking is avoided, and air inlet and exhaust effects of rim forming are greatly improved. Specifically, the pipe diameter of the second pipe section 12 is smaller than half of the pipe diameters of the first pipe section 11 and the third pipe section 13, and the pipe diameters of the first pipe section 11 and the third pipe section 13 are consistent.
In this embodiment, the transition portion between the first pipe segment 11 and the second pipe segment 12 is a first reducing pipe segment 14, and the pipe diameter of the first reducing pipe segment 14 is gradually reduced from the first pipe segment 11 to the second pipe segment 12; the transition part between the second pipe section 12 and the third pipe section 13 is a second reducing pipe section 15, and the pipe diameter of the second reducing pipe section 15 is gradually reduced from the third pipe section 13 to the second pipe section 12. Therefore, the second pipe section 12, the first pipe section 11 and the third pipe section 13 can be smoothly transited, and the smoothness of the outer wall of the air pipe can be kept, so that the pipe penetrating operation is facilitated.
In this embodiment, the air duct partially forms the second duct section 12 through single-side or double-side hot-pressing edge sealing, so that the air duct is simple in processing technology and high in processing efficiency. Specifically, the air pipe is partially formed into the second pipe section 12 through bilateral hot-pressing edge sealing, and the air pipe is formed into two symmetrical edge sealing lines 3 through bilateral hot-pressing edge sealing. As shown in fig. 3, each edge sealing line 3 includes a straight edge sealing line 31 located in the length direction of the air duct and arc edge sealing lines 32 located at two ends of the straight edge sealing line 31, and the center of the arc edge sealing line 32 faces outward. The straight edge sealing lines 31 of the two edge sealing lines 3 form two sides of the second pipe section 12, the two edge sealing lines 3 are close to the two arc edge sealing lines 32 of the first pipe section 11 to form two sides of the first variable diameter pipe section 14, and the two edge sealing lines 3 are close to the two arc edge sealing lines 32 of the third pipe section 13 to form two sides of the second variable diameter pipe section 15.
The air duct for forming the carbon fiber rim can be specifically processed by a straight air duct (i.e. an air duct with the same diameter) by adopting a sealing machine so as to form the second duct section 12. During processing, the part to be processed of the straight air pipe 1 is placed into a sealing machine for bilateral hot air edge sealing treatment, so that two mutually symmetrical edge sealing lines 3 are obtained, as shown in fig. 3; after finishing the hot-pressing edge sealing, cutting off the redundant parts 33 outside the two edge sealing lines 3 to obtain the finished air duct with the second duct section 12, as shown in fig. 4.
When the air pipe for forming the carbon fiber rim is applied, the first pipe section 11 of the air pipe is placed into the forming cavity of the carbon fiber rim forming die, the second pipe section 12 is arranged in the air passage 2 of the carbon fiber rim forming die in a penetrating mode, and the third pipe section 13 is sleeved outside the air faucet. Because the pipe diameter of the second pipe section 12 is less than or equal to the pipe diameter of the air passage 2 of the carbon fiber rim forming die, the pipe wall of the second pipe section 12 cannot be folded and accumulated in the air passage 2 of the carbon fiber rim forming die, as shown in fig. 5, so that blockage is avoided, and the air intake and exhaust effects of rim forming can be greatly improved.
The above embodiments are only used to further illustrate the air duct for forming carbon fiber rim of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. An air pipe for forming a carbon fiber rim comprises a first pipe section, a second pipe section and a third pipe section which are sequentially connected, wherein the second pipe section corresponds to an air passing channel of a carbon fiber forming die, and the tail end of the third pipe section is provided with an opening and is used for connecting an air nozzle; the method is characterized in that: the pipe diameter of the second pipe section is smaller than that of the first pipe section and the third pipe section.
2. The air duct for carbon fiber rim molding of claim 1, wherein: the pipe diameter of the second pipe section is smaller than or equal to the pipe diameter of the air passing channel of the carbon fiber forming die.
3. The air duct for carbon fiber rim molding of claim 1, wherein: the transition part between the first pipe section and the second pipe section is a first reducing pipe section, and the pipe diameter of the first reducing pipe section is gradually reduced from the first pipe section to the second pipe section; the transition part between the second pipe section and the third pipe section is a second reducing pipe section, and the pipe diameter of the second reducing pipe section is gradually reduced from the third pipe section to the second pipe section.
4. The air duct for carbon fiber rim molding of claim 1, wherein: the pipe diameter of the second pipe section is smaller than half of the pipe diameters of the first pipe section and the third pipe section.
5. The air duct for carbon fiber rim molding according to any one of claims 1 to 4, wherein: and the local part of the air pipe forms the second pipe section through unilateral or bilateral hot-pressing edge sealing.
6. The air duct for carbon fiber rim molding of claim 5, wherein: the air pipe forms two symmetrical edge sealing lines through bilateral hot-pressing edge sealing, each edge sealing line respectively comprises a straight edge sealing line positioned in the length direction of the air pipe and arc edge sealing lines positioned at two ends of the straight edge sealing line, and the circle center of each arc edge sealing line faces outwards; the straight edge sealing lines of the two edge sealing lines form two edges of the second pipe section.
7. The air duct for carbon fiber rim molding of claim 1, wherein: the pipe diameters of the first pipe section and the third pipe section are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121819744.8U CN215620124U (en) | 2021-08-05 | 2021-08-05 | Be used for fashioned tuber pipe of carbon fiber rim |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121819744.8U CN215620124U (en) | 2021-08-05 | 2021-08-05 | Be used for fashioned tuber pipe of carbon fiber rim |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215620124U true CN215620124U (en) | 2022-01-25 |
Family
ID=79895341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121819744.8U Active CN215620124U (en) | 2021-08-05 | 2021-08-05 | Be used for fashioned tuber pipe of carbon fiber rim |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215620124U (en) |
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2021
- 2021-08-05 CN CN202121819744.8U patent/CN215620124U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An air duct for forming carbon fiber car rims Effective date of registration: 20230714 Granted publication date: 20220125 Pledgee: Bank of China Limited Xiamen Tong'an sub branch Pledgor: XIAMEN BAIYEXING OUTDOOR SPORTS EQUIPMENT Co.,Ltd. Registration number: Y2023110000288 |