Carbon fiber bicycle mold

Abstract

The utility model discloses a carbon fiber bicycle mold which comprises a lower mold, an upper mold covering the lower mold and a side inner core arranged between the upper mold and the lower mold, and a mold cavity used for installing a bicycle frame preform is defined by the lower mold, the side face of one side of the side inner core and the upper mold. The side inner core is provided with a first side face used for forming a mold cavity and a second side face opposite to the first side face, a wear-resisting block is arranged on the side face of the side, facing the lower mold, of the upper mold and abuts against the second side face of the side inner core, and a limiting step is further arranged on the lower portion of the first side face of the side inner core. And the lower die is provided with a matching step corresponding to the limiting step, so that the side inner core is clamped with the lower die. The wear-resisting block is arranged on the side face of the side, facing the lower die, of the upper die, and the limiting step on the side inner core and the matching step on the lower die are arranged, so that forward inclination of the side inner core is effectively avoided, stable movement of the side inner core is guaranteed, and dislocation of a joint line is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of carbon fiber bicycles, and in particular relates to a carbon fiber bicycle mold. Background Technology

[0002] Carbon fiber bicycles are typically made by wrapping carbon fiber fabric around a mandrel to form a preform, which is then heated and pressed into shape in a mold. Figures 1 to 2 As shown, the mold includes a lower mold 1a, an upper mold 2a that covers the lower mold 1a, and a side inner core 3a located between the lower mold 1a and the upper mold 2a. During mold closing, the side inner core 3a cannot be fully placed because it is blocked by the preformed frame body 10a. It needs to be pushed into place by the first inner inclined surface 21a of the upper mold 2a and the side inner core 3a, which makes the first inner inclined surface 21a prone to wear. In addition, the thrust provided by the first inner inclined surface 21a of the upper mold 2a acts on the upper half of the side inner core. The thrust is as follows: Figure 2 As shown by the middle arrow, the upper half of the inner side core 3a will tilt forward, causing misalignment of the mold parting line. The mold parting line is as follows: Figure 2 As shown at point b, the parting line is the most difficult part to smooth out during putty application. The thicker the parting line, the greater the misalignment and the more difficult it is to smooth out. As the mold wears down, the parting line will deteriorate, seriously affecting the quality of the product. Summary of the Invention

[0003] The purpose of this utility model is to provide a carbon fiber bicycle mold to solve the problems in the prior art where the upper mold pushes the inner side core, causing the inner side core to tilt forward and resulting in misalignment of the mold parting line, and the problems in the upper mold wear causing misalignment of the mold parting line.

[0004] To achieve the above objectives, this utility model provides a carbon fiber bicycle mold, the mold including a lower mold, an upper mold covering the lower mold, and a side inner core disposed between the upper mold and the lower mold. The lower mold, one side of the side inner core, and the upper mold form a mold cavity for mounting a preform of the frame. The side inner core has a first side for forming the mold cavity and a second side opposite to the first side. The upper mold has a wear-resistant block on one side facing the lower mold, and the wear-resistant block abuts against the second side of the side inner core. The lower part of the first side of the side inner core is also provided with a limiting step, and the lower mold has a mating step corresponding to the limiting step to make the side inner core engage with the lower mold.

[0005] Preferably, the wear-resistant block is detachably connected to the upper mold.

[0006] Preferably, the wear-resistant block has an abutting surface that abuts against the inner side core. The abutting surface is inclined outward from the inner side core in an upward direction, and the angle between the abutting surface and the vertical direction is a first angle, which is greater than or equal to 4 degrees and less than or equal to 6 degrees. The second side surface of the inner side core includes a first mating surface corresponding to the abutting surface. The angle between the first mating surface and the vertical direction is a second angle, which is the same as the first angle. The second side surface of the inner side core also includes a second mating surface, which is located above the first mating surface and connected to the first mating surface. The second mating surface is inclined inward from the inner side core in an upward direction, and the angle between the second mating surface and the vertical direction is a third angle, which is greater than the second angle.

[0007] Preferably, the angle of the third included angle is greater than or equal to 14 degrees and less than or equal to 16 degrees.

[0008] Preferably, the first mating surface is located at the lower part of the second side surface.

[0009] Preferably, there are two wear-resistant blocks arranged side by side, each wear-resistant block has a protrusion, and the side of the upper mold facing the lower mold has an inwardly recessed groove, the protrusion is embedded in the recessed groove, and the wear-resistant block is bolted to the upper mold.

[0010] Preferably, the top of the inner side core is provided with a limiting protrusion, the upper mold is recessed inward with a mounting groove, the mounting groove is used to embed the inner side core, and the bottom of the mounting groove is provided with a matching groove corresponding to the limiting protrusion so that the limiting protrusion is embedded in the matching groove.

[0011] Preferably, the limiting protrusion has at least one inclined side, which is inclined inward in a bottom-up direction, and the angle between the inclined side and the vertical direction is greater than or equal to 4 degrees and less than or equal to 6 degrees.

[0012] Preferably, the limiting step includes a first step surface facing downward and a second step surface facing outward, wherein the first step surface is a horizontal step surface and the second step surface is a vertical step surface.

[0013] Preferably, the first side of the inner core includes a first limiting surface corresponding to the preform of the vehicle frame. The first limiting surface is located above the limiting step and connected to the limiting step. The lower mold has a second limiting surface corresponding to the preform of the vehicle frame. The second limiting surface is connected to the mating step. The upper mold has a third limiting surface corresponding to the preform of the vehicle frame. The first limiting surface, the second limiting surface, and the third limiting surface form the mold cavity.

[0014] Compared with the prior art, this utility model provides a wear-resistant block on the side of the upper mold facing the lower mold, and effectively avoids the side inner core from tilting forward by setting a limiting step on the side inner core and a matching step on the lower mold, thus ensuring the smooth movement of the side inner core and effectively avoiding misalignment of the mold parting line. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a carbon fiber bicycle mold in the prior art.

[0016] Figure 2 This is a structural diagram of the installation process of carbon fiber bicycle molds in the existing technology.

[0017] Figure 3 This is a structural diagram of a carbon fiber bicycle mold from one angle, representing an embodiment of this utility model.

[0018] Figure 4 This is a structural diagram of the carbon fiber bicycle mold from another angle, representing an embodiment of this utility model.

[0019] Figure 5 This is an exploded structural diagram of the carbon fiber bicycle mold according to an embodiment of the present invention.

[0020] Figure 6 This is a structural diagram of the inner side kernel in an embodiment of this utility model.

[0021] Figure 7 This is a structural diagram of the upper mold with wear-resistant blocks installed in an embodiment of the present invention.

[0022] Figure 8 This is an exploded structural diagram of the upper mold and the wear-resistant block in an embodiment of this utility model.

[0023] Figure 9 This is a structural diagram of the lower mold in an embodiment of the present invention.

[0024] Figure 10 This is a cross-sectional view of the carbon fiber bicycle mold according to an embodiment of the present invention.

[0025] Figure 11 This is a cross-sectional view of the wear-resistant block in an embodiment of this utility model.

[0026] Figure 12 This is a cross-sectional view of the inner side core in an embodiment of this utility model.

[0027] Figure 13 This is a diagram illustrating the installation process of a carbon fiber bicycle mold according to an embodiment of this utility model.

[0028] Explanation of reference numerals in the attached diagram:

[0029] 1a. Lower mold; 2a. Upper mold; 21a. First inner inclined surface; 3a. Side inner core; 10a. Frame preform; b. Parting line; 1. Lower mold; 11. Mating step; 111. Third step surface; 112. Fourth step surface; 12. Second limiting surface; 2. Upper mold; 21. Mounting groove; 22. Mating groove; 23. Third limiting surface; 24. Recessed groove; 3. Side inner core; 301. First side surface; 302. Second side surface; 31. First mating surface; 32. Second mating surface; 33. Limiting step; 35. First limiting surface; 331. First step surface; 332. Second step surface; 34. Limiting protrusion; 341. Inclined side surface; 4. Wear-resistant block; 41. Abutment surface; 42. Protrusion; 10. Frame preform. Detailed Implementation

[0030] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0031] like Figures 3 to 13 As shown, this utility model embodiment provides a carbon fiber bicycle mold. The mold includes a lower mold 1, an upper mold 2 covering the lower mold 1, and a side inner core 3 disposed between the upper mold 2 and the lower mold 1. The lower mold 1, one side of the side inner core 3, and the upper mold 2 form a mold cavity for mounting a preform body 10 of the frame. The side inner core 3 has a first side 301 for forming the mold cavity and a second side 302 opposite to the first side 301. A wear-resistant block 4 is provided on the side of the upper mold 2 facing the lower mold 1. The wear-resistant block 4 abuts against the second side 302 of the side inner core 3. A limiting step 33 is also provided at the lower part of the first side 301 of the side inner core 3. The lower mold 1 is provided with a matching step 11 corresponding to the limiting step 33 so that the side inner core 3 is engaged with the lower mold 1. Specifically, the lower mold 1, the side inner core 3, and the upper mold 2 form a mold cavity for the preform 10 of the vehicle frame. The preform 10 of the vehicle frame is embedded in the mold cavity and formed by heating and pressurizing. The wear-resistant block 4 can be made of wear-resistant steel. Wear-resistant blocks 4 are provided on the side of the upper mold 2 facing the lower mold 1, such as... Figures 10 to 13As shown, the wear-resistant block 4 is used to push the inner side core 3 to cooperate and position with the lower mold 1, thereby reducing the wear of the upper mold 2 and reducing the risk of misalignment of the mold parting line. In addition, by setting the limiting step 33 on the inner side core 3 and the cooperating step 11 on the lower mold 1, the wear-resistant block 4 can push the inner side core 3 during the process of pushing the inner side core 3. Due to the locking and limiting of the limiting step 33 and the cooperating step 11, even if the pushing force of the wear-resistant block 4 acts on the upper part of the inner side core 3, it will not cause the inner side core 3 to tilt forward, ensuring the smooth movement of the inner side core 3, thereby further avoiding misalignment of the mold parting line. The design is very ingenious.

[0032] This utility model embodiment provides a wear-resistant block 4 on the side of the upper mold 2 facing the lower mold 1, and through the setting of the limiting step 33 on the inner side core 3 and the matching step 11 on the lower mold 1, it effectively avoids the inner side core 3 from tilting forward, ensuring the smooth movement of the inner side core 3, thereby effectively avoiding misalignment of the mold parting line.

[0033] Embodiments of this utility model, such as Figures 7 to 8 As shown, the wear-resistant block 4 is detachably connected to the upper mold 2. Specifically, the wear-resistant block 4 reduces the wear rate of the wear-resistant block 4. Even after the wear-resistant block 4 is worn, it can be easily replaced with a new wear-resistant block 4 because it is detachably connected to the upper mold 2, thereby reducing the risk of misalignment of the mold parting line.

[0034] Furthermore, such as Figure 8 as well as Figures 10 to 13 As shown, the wear-resistant block 4 has an abutting surface 41 that abuts against the inner core 3. The abutting surface 41 is inclined to the outside of the inner core 3 in the direction from bottom to top, and the angle between the abutting surface 41 and the vertical direction is a first included angle c. The angle of the first included angle c is greater than or equal to 4 degrees and less than or equal to 6 degrees. The second side surface 302 of the inner core 3 includes a first mating surface 31 corresponding to the abutting surface 41. The angle between the first mating surface 31 and the vertical direction is a second included angle d. The angle of the second included angle d is the same as the angle of the first included angle c. The second side surface 302 of the inner core 3 also includes a second mating surface 32. The second mating surface 32 is located above the first mating surface 31 and is connected to the first mating surface 31. The second mating surface 32 is inclined to the inside of the inner core 3 in the direction from bottom to top, and the angle between the second mating surface 32 and the vertical direction is a third included angle e. The angle of the third included angle e is greater than the angle of the second included angle d. Specifically, the angles of the first included angle c and the second included angle d are preferably 5 degrees, and the angle of the third included angle e is greater than the angle of the second included angle d. This ensures that the upper mold 2 can complete the positioning connection with the lower mold 1 with less pushing of the side inner core 3 during the pressing process. In addition, setting the first included angle c and the second included angle d to 5 degrees makes the lateral component of the abutment force between the wear-resistant block 4 and the abutment surface 41 smaller, so that the connection between the upper mold 2, the side inner core 3 and the lower mold 1 is stable and the mutual wear is small.

[0035] In this embodiment of the utility model, such as Figure 12 As shown, the angle of the third included angle e is greater than or equal to 14 degrees and less than or equal to 16 degrees. Specifically, the angle of the third included angle e is 15 degrees, which ensures that the upper mold 2 can push the inner side core 3 less during the pressing process to position and connect with the lower mold 1.

[0036] In this embodiment of the utility model, such as Figure 6 As shown, the first mating surface 31 is located at the lower part of the second side surface 302. Specifically, the first mating surface 31 is located at the lower part of the second side surface 302, that is, the first mating surface 31 is located below the middle of the second side surface 302 in the vertical direction, ensuring a stable connection between the upper mold 2, the inner side core 3, and the lower mold 1.

[0037] In this embodiment of the utility model, such as Figure 8 As shown, there are two wear-resistant blocks 4 arranged side by side. Each wear-resistant block 4 has a protrusion 42. The side of the upper mold 2 facing the lower mold 1 has an inwardly recessed groove 24. The protrusion 42 is embedded in the recessed groove 24, and the wear-resistant block 4 is bolted to the upper mold 2. It should be noted that the detachable connection method between the wear-resistant block 4 and the upper mold 2 is not limited and is not restricted here. Furthermore, in some other specific embodiments of this utility model, the number of wear-resistant blocks 4 can be one or more. Specifically, one or more can be installed depending on the size of the inner core 3. The wear-resistant blocks 4 are made of hardened material and have uniform dimensions to facilitate disassembly and replacement.

[0038] In this embodiment of the utility model, such as Figures 6 to 7 , Figure 10 as well as Figure 13 As shown, the top of the inner side core 3 is provided with a limiting protrusion 34, and the upper mold 2 has an inwardly recessed mounting groove 21 for embedding the inner side core 3. The bottom of the mounting groove 21 is provided with a mating groove 22 corresponding to the limiting protrusion 34 so that the limiting protrusion 34 is embedded in the mating groove 22. Specifically, by setting the limiting protrusion 34, the inner side core 3 is further precisely positioned to ensure that the inner side core 3 is installed in place and to ensure a reliable connection between the upper mold 2, the inner side core 3, and the lower mold 1.

[0039] In this embodiment of the utility model, such as Figure 12 As shown, the limiting protrusion 34 has at least one inclined side surface 341. The inclined side surface 341 is inclined inward in a downward direction, and the angle between the inclined side surface 341 and the vertical direction is greater than or equal to 4 degrees and less than or equal to 6 degrees. Specifically, the angle between the inclined side surface 341 and the vertical direction is preferably 5 degrees, so that the inclined side surface 341 has a certain guiding function, which facilitates the installation of the inner core 3 and the upper mold 2.

[0040] In this embodiment of the utility model, such as Figure 6As shown, the limiting step 33 includes a first step surface 331 facing downward and a second step surface 332 facing outward. The first step surface 331 is a horizontal step surface, and the second step surface 332 is a vertical step surface. Specifically, the mating step 11 has a third step surface 111 facing upward and a fourth step surface 112 facing inward. The third step surface 111 is a horizontal step surface, and the fourth step surface 112 is a vertical step surface, thereby preventing the inner side core 3 from tilting forward.

[0041] In this embodiment of the utility model, such as Figure 5 , Figure 7 as well as Figure 9 As shown, the first side surface 301 of the inner core 3 includes a first limiting surface 35 corresponding to the preform 10 of the frame. The first limiting surface 35 is located above and connected to the limiting step 33. The lower mold 1 has a second limiting surface 12 corresponding to the preform 10 of the frame, which is connected to the mating step 11. The upper mold 2 has a third limiting surface 23 corresponding to the preform 10 of the frame. The first limiting surface 35, the second limiting surface 12, and the third limiting surface 23 form a mold cavity. Specifically, the mold cavity covers the outer periphery of the preform 10 of the frame, and a relatively closed space is formed between the upper mold 2, the inner core 3, and the lower mold 1 to better heat and pressurize the preform 10 of the frame.

[0042] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A carbon fiber bicycle mold, characterized in that, The mold includes a lower mold, an upper mold covering the lower mold, and a side inner core disposed between the upper mold and the lower mold. The lower mold, one side of the side inner core, and the upper mold together form a mold cavity for mounting a preform of a vehicle frame. The side inner core has a first side for forming the mold cavity and a second side opposite to the first side. The upper mold has a wear-resistant block on one side facing the lower mold, and the wear-resistant block abuts against the second side of the side inner core. The lower part of the first side of the side inner core is also provided with a limiting step. The lower mold has a mating step corresponding to the limiting step so that the side inner core is engaged with the lower mold.

2. The carbon fiber bicycle mold as described in claim 1, characterized in that, The wear-resistant block is detachably connected to the upper mold.

3. The carbon fiber bicycle mold as described in claim 1, characterized in that, The wear-resistant block has an abutting surface that abuts against the inner side core. The abutting surface is inclined outward from the inner side core in an upward direction, and the angle between the abutting surface and the vertical direction is a first angle, which is greater than or equal to 4 degrees and less than or equal to 6 degrees. The second side surface of the inner side core includes a first mating surface corresponding to the abutting surface. The angle between the first mating surface and the vertical direction is a second angle, which is the same as the first angle. The second side surface of the inner side core also includes a second mating surface, which is located above the first mating surface and connected to the first mating surface. The second mating surface is inclined inward from the inner side core in an upward direction, and the angle between the second mating surface and the vertical direction is a third angle, which is greater than the second angle.

4. The carbon fiber bicycle mold as described in claim 3, characterized in that, The angle of the third included angle is greater than or equal to 14 degrees and less than or equal to 16 degrees.

5. The carbon fiber bicycle mold as described in claim 3, characterized in that, The first mating surface is located at the lower part of the second side surface.

6. The carbon fiber bicycle mold as described in claim 2, characterized in that, The wear-resistant blocks are two arranged side by side, and each wear-resistant block has a protrusion. The side of the upper mold facing the lower mold has an inwardly recessed groove. The protrusion is embedded in the recessed groove, and the wear-resistant block is bolted to the upper mold.

7. The carbon fiber bicycle mold as described in claim 1, characterized in that, The top of the inner side core is provided with a limiting protrusion, and the upper mold is recessed inward with an installation groove. The installation groove is used to embed the inner side core, and the bottom of the installation groove is provided with a matching groove corresponding to the limiting protrusion so that the limiting protrusion is embedded in the matching groove.

8. The carbon fiber bicycle mold as described in claim 7, characterized in that, The limiting protrusion has at least one inclined side, which is inclined inward in a bottom-up direction, and the angle between the inclined side and the vertical direction is greater than or equal to 4 degrees and less than or equal to 6 degrees.

9. The carbon fiber bicycle mold as described in claim 1, characterized in that, The limiting step includes a first step surface facing downwards and a second step surface facing outwards. The first step surface is a horizontal step surface, and the second step surface is a vertical step surface.

10. The carbon fiber bicycle mold as described in claim 1, characterized in that, The first side of the inner core includes a first limiting surface corresponding to the preform of the vehicle frame. The first limiting surface is located above the limiting step and connected to the limiting step. The lower mold has a second limiting surface corresponding to the preform of the vehicle frame. The second limiting surface is connected to the mating step. The upper mold has a third limiting surface corresponding to the preform of the vehicle frame. The first limiting surface, the second limiting surface, and the third limiting surface form the mold cavity.

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