Carbon fiber rim preforming jig

Abstract

The utility model belongs to the technical field of die machining, and particularly relates to a carbon fiber rim pre-forming jig which comprises a base plate, an inner ring fixing die is welded to the center of the upper surface of the base plate, an inner die groove is formed in the surface of the outer wall of the inner ring fixing die, and an arc-shaped clamp is movably arranged on the outer side of the inner die groove. A movable mold is integrally formed on the surface of the inner ring of the arc-shaped clamp, the movable mold is connected with the inner mold groove in an inserted mode after the arc-shaped clamp moves, a movable groove is formed in the surface of the base plate, and a movable seat is slidably arranged in an inner cavity of the movable groove. The driving lead screw pushes the moving seat to move in the moving groove under the action of the surface threads, the moving seat can drive the arc-shaped clamp to move, the movable mold is inserted into the inner mold groove, the driving lead screw is reversely rotated, the driving lead screw drives the movable mold to move under the action of the surface threads, and the movable mold is separated from the inner mold groove. Rapid demolding of the carbon fiber rim can be achieved, and protection of the carbon fiber rim is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, specifically a carbon fiber bicycle wheel preform fixture. Background Technology

[0002] Rim preform fixtures play a crucial role in the manufacturing process of carbon fiber rims, and their design and application directly affect the molding quality and production efficiency. Below are some common rim preform fixtures, their design features, and application scenarios: Common Types: Type 1 Rim Preform Fixture: Composed of a first fixture, a second fixture, and a plastic ring. The first fixture includes separable upper and lower fixtures, forming a circular flared opening. The second fixture and the plastic ring are both circular, with the plastic ring fixed to the inner end of the second fixture via an arc-shaped single-piece splice. Suitable for manufacturing processes requiring precise control of the rim's shape and dimensions.

[0003] In existing pre-molding jigs for bicycle rims, after the carbon fiber rim is pre-molded, the movable mold is attached to the carbon fiber rim. It is necessary to knock the movable mold to separate it from the carbon fiber rim. The knocking will generate vibration, which will cause damage to the rim when demolding. In order to solve the above problems, this application proposes a pre-molding jig for carbon fiber rims. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] To address the technical problems existing in the background art, this utility model proposes a carbon fiber bicycle rim pre-molding fixture. A drive screw, under the action of its surface thread, pushes a movable seat to move within a movable groove. The movable seat can drive an arc-shaped clamp to move, and the movable mold is inserted into the inner mold groove. Reversing the drive screw, under the action of its surface thread, causes the movable mold to move, separating it from the inner mold groove. This enables rapid demolding of the carbon fiber bicycle rim, improving the protection of the carbon fiber bicycle rim and solving the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To solve the above technical problems, this utility model provides a carbon fiber rim preforming fixture, including a chassis, an inner ring fixing mold welded at the center of the upper surface of the chassis, an inner mold groove formed on the outer wall surface of the inner ring fixing mold, an arc-shaped clamp movably provided on the outer side of the inner mold groove, a movable mold integrally formed on the inner ring surface of the arc-shaped clamp, and the movable mold inserting into the inner mold groove after the arc-shaped clamp moves.

[0008] The chassis surface is provided with a moving groove, the moving groove cavity is provided with a moving seat, the moving seat cavity is provided with a drive screw threaded through it, and the arc-shaped clamp is fixed to the surface of the moving seat;

[0009] The upper surface of the inner ring fixing mold is movably provided with an upper pressure cover.

[0010] Preferably, the movable molds are distributed at equal intervals, and the movable molds are connected end to end to form a circular structure.

[0011] Preferably, a pre-formed cavity is formed between the movable mold and the inner mold groove, and carbon fiber cloth is laid in the pre-formed cavity.

[0012] Preferably, a rotating swing arm is welded to the side wall of the upper pressure cover, and a fixed seat is welded to the surface of the chassis, with the rotating swing arm rotatably connected to the fixed seat.

[0013] Preferably, a gearbox is mounted on the side wall of the fixed base, and a drive motor is mounted on the top surface of the gearbox.

[0014] Preferably, the gearbox cavity is rotatably provided with a drive worm gear, which is connected to the end of the rotating shaft connecting the rotating arm and the fixed seat. The power output end of the drive motor is driven by a drive worm, which is connected to the drive worm gear.

[0015] Preferably, a heating plate is installed on the upper surface of the upper cover.

[0016] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] 1. In this utility model, the drive screw pushes the movable seat to move in the movable groove under the action of the surface thread. The movable seat can drive the arc-shaped clamp to move. The movable mold will be inserted into the inner mold groove. Reverse the drive screw, and the drive screw will drive the movable mold to move under the action of the surface thread, so that the movable mold is separated from the inner mold groove. This can realize the rapid demolding of carbon fiber bicycle rims and improve the protection of carbon fiber bicycle rims.

[0018] 2. In this utility model, the drive motor is controlled to rotate in both directions by a forward and reverse switch. The drive motor drives the drive worm gear in the gearbox. The drive worm gear drives the upper cover to open and close through the drive worm wheel, making the opening and closing of the upper cover more labor-saving. At the same time, the worm wheel and worm gear are matched with a self-locking property, which allows the opening angle of the upper cover to be adjusted at will. It also improves the sealing effect of the upper cover on the preform cavity after closing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a carbon fiber rim preforming fixture according to the present invention;

[0020] Figure 2 This is a cross-sectional structural schematic diagram of a carbon fiber rim preform fixture according to the present invention.

[0021] Figure 3This is a schematic diagram of the movable mold adjustment structure of a carbon fiber rim preforming fixture according to this utility model;

[0022] Figure 4 This is a schematic diagram of the gearbox structure of a carbon fiber wheel preform fixture according to this utility model.

[0023] Figure label:

[0024] 1. Chassis; 2. Inner ring fixed mold; 3. Inner mold groove; 4. Moving groove; 5. Moving seat; 6. Drive screw; 7. Arc-shaped clamp; 8. Movable mold; 9. Upper pressure cover; 10. Heating plate; 11. Fixed seat; 12. Rotating swing arm; 13. Gearbox; 14. Drive motor; 15. Drive worm gear; 16. Drive worm wheel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] like Figure 1-4 As shown, the present invention proposes a carbon fiber rim preforming fixture, including a chassis 1. An inner ring fixing mold 2 is welded at the center of the upper surface of the chassis 1. An inner mold groove 3 is formed on the outer wall surface of the inner ring fixing mold 2. An arc-shaped clamp 7 is movably provided on the outer side of the inner mold groove 3. A movable mold 8 is integrally formed on the inner ring surface of the arc-shaped clamp 7. After the arc-shaped clamp 7 moves, the movable mold 8 is inserted into the inner mold groove 3.

[0027] The chassis 1 has a movable groove 4 on its surface, a movable seat 5 is slidably provided in the inner cavity of the movable groove 4, a drive screw 6 is threaded through the inner cavity of the movable seat 5, and the arc-shaped clamp 7 is fixed on the surface of the movable seat 5.

[0028] The upper surface of the inner ring fixing mold 2 is movably provided with an upper pressure cover 9.

[0029] It should be noted that the carbon fiber cloth is laid in the inner mold groove 3. By rotating the drive screw 6, the drive screw 6 pushes the moving seat 5 to move in the moving groove 4 under the action of the surface thread. The moving seat 5 can drive the arc-shaped clamp 7 to move, and the movable mold 8 will be inserted into the inner mold groove 3. A pre-formed cavity is formed between the movable mold 8 and the inner mold groove 3. The carbon fiber cloth is clamped in the pre-formed cavity. Reverse the drive screw 6, and the drive screw 6 drives the movable mold 8 to move under the action of the surface thread, so that the movable mold 8 is separated from the inner mold groove 3, which can realize the rapid demolding of the carbon fiber wheel.

[0030] In this embodiment, as Figure 2 As shown, the movable molds 8 are distributed at equal intervals and are connected end to end to form a circular structure. A pre-formed cavity is formed between the movable molds 8 and the inner mold groove 3, and carbon fiber cloth is laid in the pre-formed cavity.

[0031] It should be noted that the carbon fiber cloth can be pre-shaped inside the pre-forming cavity.

[0032] In this embodiment, as Figure 3 As shown, a rotating swing arm 12 is welded to the side wall of the upper pressure cover 9, and a fixed seat 11 is welded to the surface of the chassis 1. The rotating swing arm 12 is rotatably connected to the fixed seat 11.

[0033] It should be noted that the rotating arm 12 is rotatably connected to the fixed base 11, which enables the upper pressure cover 9 to be closed and opened.

[0034] In this embodiment, as Figure 4 As shown, a gearbox 13 is installed on the side wall of the fixed base 11, and a drive motor 14 is installed on the top surface of the gearbox 13. A drive worm gear 16 is rotatably provided in the inner cavity of the gearbox 13. The drive worm gear 16 is connected to the end of the connecting shaft of the rotating arm 12 and the fixed base 11. The power output end of the drive motor 14 is driven by a drive worm 15, and the drive worm 15 is driven by the drive worm gear 16.

[0035] It should be noted that the drive motor 14 is controlled to rotate in both directions by the forward and reverse switch. The drive motor 14 drives the drive worm gear 15 in the gearbox 13. The drive worm gear 15 drives the upper cover 9 to open and close through the drive worm wheel 16, making the opening and closing operation of the upper cover 9 easier. At the same time, the worm wheel and worm gear are self-locking, and the opening angle of the upper cover 9 can be adjusted at will. It also improves the sealing effect of the upper cover 9 on the preform cavity after closing.

[0036] In this embodiment, as Figure 3 As shown, a heating plate 10 is installed on the upper surface of the upper pressure cover 9.

[0037] It should be noted that the heating plate 10 can heat the carbon fiber cloth in the preform cavity after being powered on.

[0038] The working principle and usage process of this utility model are as follows: Carbon fiber cloth is laid in the inner mold groove 3. By rotating the drive screw 6, the drive screw 6 pushes the moving seat 5 to move in the moving groove 4 under the action of the surface thread. The moving seat 5 can drive the arc-shaped clamp 7 to move. The movable mold 8 is inserted into the inner mold groove 3, and a pre-forming cavity is formed between the movable mold 8 and the inner mold groove 3. The carbon fiber cloth is clamped in the pre-forming cavity. The upper pressure cover 9 is pressed on the top of the pre-forming cavity to seal the top of the pre-forming cavity. The heating plate 10 heats and shapes the carbon fiber cloth. After the carbon fiber wheel is shaped, the drive motor 14 is controlled by the forward and reverse switch to continue... In both forward and reverse rotation, the drive motor 14 drives the drive worm gear 15 in the gearbox 13. The drive worm gear 15 drives the upper pressure cover 9 to open and close via the drive worm wheel 16, making the opening and closing of the upper pressure cover 9 easier. At the same time, the worm wheel and worm gear are self-locking, allowing the opening angle of the upper pressure cover 9 to be adjusted at will. It also improves the sealing effect of the upper pressure cover 9 on the pre-molded cavity after closing. In reverse rotation, the drive screw 6 drives the movable mold 8 to move under the action of the surface thread, so that the movable mold 8 separates from the inner mold groove 3, which can realize the rapid demolding of carbon fiber wheel rims.

[0039] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims or their equivalents.

Claims

1. A carbon fiber rim preform fixture, comprising a chassis (1), characterized in that, An inner ring fixing mold (2) is welded at the center of the upper surface of the chassis (1). An inner mold groove (3) is opened on the outer wall surface of the inner ring fixing mold (2). An arc-shaped clamp (7) is movably provided on the outer side of the inner mold groove (3). A movable mold (8) is integrally formed on the inner ring surface of the arc-shaped clamp (7). After the arc-shaped clamp (7) moves, the movable mold (8) is inserted into the inner mold groove (3). The chassis (1) has a moving groove (4) on its surface. A moving seat (5) is slidably provided in the inner cavity of the moving groove (4). A drive screw (6) is threaded through the inner cavity of the moving seat (5). The arc-shaped clamp (7) is fixed on the surface of the moving seat (5). The upper surface of the inner ring fixing mold (2) is provided with an upper pressure cover (9).

2. The carbon fiber rim preform fixture according to claim 1, characterized in that, The movable molds (8) are distributed at equal intervals, and the movable molds (8) are connected end to end to form a circular structure.

3. The carbon fiber rim preform fixture according to claim 2, characterized in that, The movable mold (8) and the inner mold groove (3) form a pre-formed cavity, and carbon fiber cloth is laid in the pre-formed cavity.

4. A carbon fiber rim preform fixture according to claim 3, characterized in that, The upper cover (9) has a rotating swing arm (12) welded to its side wall, and the chassis (1) has a fixed seat (11) welded to its surface. The rotating swing arm (12) is rotatably connected to the fixed seat (11).

5. A carbon fiber rim preform fixture according to claim 4, characterized in that, A gearbox (13) is installed on the side wall of the fixed base (11), and a drive motor (14) is installed on the top surface of the gearbox (13).

6. A carbon fiber rim preform fixture according to claim 5, characterized in that, The gearbox (13) has a rotating drive worm gear (16) inside. The drive worm gear (16) is connected to the end of the connecting shaft of the rotating arm (12) and the fixed seat (11). The power output end of the drive motor (14) is connected to a drive worm (15), which is connected to the drive worm gear (16).

7. A carbon fiber rim preform fixture according to claim 6, characterized in that, A heating plate (10) is installed on the upper surface of the upper cover (9).

Images