Carbon fiber bicycle frame mold

Abstract

The utility model relates to the technical field of carbon fiber bicycles, and provides a carbon fiber bicycle frame mold which comprises a frame preform, an upper mold plate, a lower mold plate and a frame mold core assembly, and an upper mold cavity and a first heating groove are formed in the upper mold plate; a lower mold cavity and a second heating groove are formed in the lower mold plate; the frame preform, the upper mold plate, the lower mold plate and the frame mold core assembly are spliced to form a mold cavity; a ventilation opening is formed in the lower mold plate, and an air opening is formed in the upper mold plate. After the mold is put into the machine table, hot air is input into the independent cavity formed by the first heating groove and the second heating groove through the air port so as to heat the mold. And the mold cavity is vacuumized through the ventilation opening, so that the carbon fiber material can be tightly attached to the bicycle frame preform, the pressurization action of a machine table is matched, and the rough blank manufacturing of the bicycle frame is completed after cooling. The vacuum-pumping technology is utilized to exhaust air, so that the condition of bubbles or delamination when the carbon fiber material is attached is avoided, and the production quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber bicycles, in particular to a carbon fiber bicycle frame mould. Background Art

[0002] With the improvement of bicycle research and development capabilities, higher requirements are put forward for the weight, strength and service life of bicycle bodies. As a result, carbon fiber bicycle frames have come into being. Carbon fiber has the characteristics of high temperature resistance, friction resistance, corrosion resistance, and high specific strength. The obtained carbon fiber bicycle frames have the advantages of light weight, high strength and good impact resistance. At present, carbon fiber bicycle frames usually adopt auxiliary mold forming process, that is, the upper mold assembly, lower mold assembly, slider, insert, iron core, etc., through mold closing, pouring, curing and mold opening to obtain the finished carbon fiber bicycle frame.

[0003] The utility model patent with the authorization announcement number CN219820698U discloses a carbon fiber bicycle frame forming mold, including an upper mold and a lower mold, which are buckled together to form a forming cavity, and a carbon fiber preform is placed in the forming cavity and then put into a hot press table, which applies pressure to the upper mold and the lower mold and transfers heat to obtain a formed carbon fiber bicycle frame. However, it is in contact with air during the production process, which easily causes bubbles and delamination of the carbon fiber cloth, affecting the quality of the finished product.

[0004] Therefore, the present application proposes a carbon fiber bicycle frame mold, which can avoid bubbles and delamination and improve product quality. Utility Model Content

[0005] The utility model aims to provide a carbon fiber bicycle frame mold, aiming to improve the problem that the quality of the finished carbon fiber bicycle frame made by the existing carbon fiber bicycle frame mold is poor.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: a carbon fiber bicycle frame mold, comprising:

[0007] Frame preform;

[0008] An upper mold plate, in which an upper mold cavity and a first heating tank are arranged;

[0009] a lower mold plate, in which a lower mold cavity is arranged opposite to the upper mold cavity, and a second heating groove is arranged opposite to the heating groove; and

[0010] A vehicle frame core mold assembly is arranged on the lower mold plate, and the vehicle frame core mold assembly is butted or abutted against the vehicle frame preform;

[0011] When the upper template and the lower template are molded together, the frame preform, the upper template, the lower template and the frame core assembly are assembled to form a mold cavity;

[0012] The lower template is provided with a ventilating port communicating with the lower mold cavity, and the upper template or the lower template is provided with an air port communicating with the first heating groove.

[0013] Preferably, the upper mold cavity or the lower mold cavity is a cavity groove of the front triangle of the bicycle frame;

[0014] The first heating groove is arranged on the upper template at the inner hole position of the front triangle, and the second heating groove is arranged on the lower template at the inner hole position of the front triangle.

[0015] Preferably, the frame mold core assembly comprises a seat component, a first handlebar component, a second handlebar component arranged opposite to the first handlebar component, and an iron core component, the seat component is arranged on the mold cavity corresponding to the seat support tube of the front triangle, and the first handlebar component and the second handlebar component are arranged on the mold cavity corresponding to the head tube of the front triangle;

[0016] The core piece includes a core tube vertically arranged on the lower mold plate, and a core cover butted against the core tube, and the core tube is arranged on the mold cavity at the bottom corner of the front triangle.

[0017] Preferably, a first slider and a second slider are provided on the lower template located between the first handlebar member and the second handlebar member, the first slider is arranged opposite to the second slider, and the second slider is located at the front corner of the front triangle.

[0018] Preferably, a third slider, a fourth slider and a fifth slider are arranged on the lower template on both sides of the seat component, the third slider is arranged on the top corner of the front triangle, the third slider is arranged adjacent to the fourth slider and on the same side, and the fifth slider is arranged opposite to the third slider.

[0019] Preferably, a slider group of a rear triangle connecting frame of the bicycle frame is provided at the bottom corner of the front triangle.

[0020] Preferably, a closed-loop sealing groove is provided on the lower template or the upper template.

[0021] Preferably, a plurality of anti-overflow grooves are provided on the lower template or the upper template, and the anti-overflow grooves are located between the sealing groove and the mold cavity.

[0022] Preferably, a punching slider is provided on the middle portion of the support tube of the front triangle, and a plurality of punching shafts extending into the lower mold cavity are provided on the punching slider.

[0023] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0024] 1. When manufacturing with a carbon fiber bicycle frame mold, the frame mold core assembly is fixed on the lower mold plate, and the frame preform is fixed, while the carbon fiber material is covered and pressed in the upper and lower mold cavities to complete the preparation work before manufacturing. The carbon fiber bicycle frame mold is locked and placed in the machine. The mold is vacuumed through the vents, and hot air is poured in through the air port for heating. At the same time, after the carbon fiber bicycle frame mold is placed in the machine, it can also be pressurized through the machine. After the carbon fiber bicycle frame mold is cooled, the rough blank of the bicycle frame is completed. The vacuum technology is used to remove air, so when attaching carbon fiber materials, bubbles or delamination can be prevented, thereby improving the quality of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of the lower template of the carbon fiber bicycle frame mold described in the utility model;

[0026] Figure 2 This is a structural schematic diagram of the upper template of the carbon fiber bicycle frame mold described in the utility model;

[0027] Figure 3 It is a side view of the carbon fiber bicycle frame mold described in the utility model;

[0028] Figure 4 This is a cross-sectional view of the upper mold plate of the carbon fiber bicycle frame mold described in the utility model;

[0029] Figure 5 The utility model is a schematic structural diagram of the iron core member of the carbon fiber bicycle frame mold.

[0030] Description of reference numerals:

[0031] 10. upper template; 101. upper mold cavity; 102. first heating tank; 103. air port;

[0032] 20, lower template; 201, lower mold cavity; 202, second heating tank; 203, vent; 204, first slider; 205, second slider; 206, third slider; 207, fourth slider; 208, fifth slider; 209, slider group; 2010, sealing groove; 2011, anti-overflow groove; 2012, punching slider;

[0033] 30. Frame core assembly;

[0034] 301, seat part; 302, first handlebar part; 303, second handlebar part; 304, core part;

[0035] 3041. Iron core tube; 3042. Iron core cover. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] In addition, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] When an element is referred to as being “fixed to” or “disposed on” or “provided on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0039] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0040] Example

[0041] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the present embodiment provides a carbon fiber bicycle frame mold, including a frame preform, an upper template 10, a lower template 20 and a frame core mold assembly 30, wherein an upper mold cavity 101 and a first heating groove 102 are arranged in the upper template 10; a lower mold cavity 201 arranged to be relatively assembled with the upper mold cavity 101, and a second heating groove 202 arranged to be relatively assembled with the heating groove are arranged in the lower template 20; the frame core mold assembly 30 is arranged on the lower template 20, and the frame core mold assembly 30 is docked or abutted with the frame preform; when the upper template 10 and the lower template 20 are molded, the frame preform, the upper template 10, the lower template 20 and the frame core mold assembly 30 are assembled to form a mold cavity; a vent 203 communicating with the lower mold cavity 201 is arranged on the lower template 20, and an air port 103 communicating with the first heating groove 102 is arranged on the upper template 10 or the lower template 20.

[0042] In this embodiment, the upper model cavity 101 or the lower model cavity 201 is a cavity groove of the front triangle of the bicycle frame, and the front triangle includes a head tube, an upper cross beam, a lower beam and a support tube. The head tube is shorter and the lower beam is connected obliquely, thus forming a triangular structure of the upper cross beam, the lower beam and the support tube.

[0043] Specifically, a layer of carbon fiber material needs to be coated on the frame preform, and the frame core assembly 30 is connected to the frame preform to form a rough blank to be coated. Before closing the mold, a layer of mold release agent needs to be applied to the upper mold cavity 101 and the lower mold cavity 201, and covered with carbon fiber material (carbon fiber adhesive needs to be brushed). After completing the preliminary work, the upper mold plate 10 and the lower mold plate 20 are closed, locked with bolts, and then placed in the machine.

[0044] After being placed in the machine, hot air is input into the independent cavity formed by the first heating tank 102 and the second heating tank 202 through the air port 103 to heat the carbon fiber bicycle frame mold. In addition, the mold cavity is vacuumed through the vent 203 so that the carbon fiber material can be tightly attached to the frame preform, and finally, gas can be introduced for cooling in conjunction with the pressurization action of the machine to complete the rough manufacturing of the bicycle frame. The vacuum technology is used to remove air to prevent bubbles or delamination when attaching the carbon fiber material, thereby improving the quality of production.

[0045] Furthermore, in this embodiment, the first heating groove 102 is arranged on the upper mold plate 10 at the inner hole position of the front triangle, and the second heating groove 202 is arranged on the lower mold plate 20 at the inner hole position of the front triangle. That is, in the middle of the carbon fiber bicycle frame mold, a cavity structure is opened in the middle area of ​​the front triangle, and the carbon fiber bicycle frame mold is heated after hot air is introduced.

[0046] like Figure 1 and Figure 2As shown, in this embodiment, the frame mold core assembly 30 includes a seat component 301, a first handlebar component 302, a second handlebar component 303 arranged opposite to the first handlebar component 302, and an iron core component 304. The seat component 301 is arranged on the mold cavity corresponding to the seat support tube of the front triangle. Specifically, the seat component 301 is a pipe frame structure for installing the seat, which is also connected to the frame preform and supports it at the same time so that the carbon fiber material can be coated.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the third slider 206, the fourth slider 207 and the fifth slider 208 are arranged on the lower template 20 on both sides of the seat member 301. The third slider 206 is arranged on the top corner of the front triangle. The third slider 206 and the fourth slider 207 are arranged adjacent to each other on the same side, and the fifth slider 208 is arranged opposite to the third slider 206. The third slider 206, the fourth slider 207 and the fifth slider 208 have arc surfaces on the sides facing the mold cavity. In this way, when the lower template 20 is molded with the upper template 10, the third slider 206, the fourth slider 207 and the fifth slider 208 are combined to form the required mold cavity. After the manufacturing is completed, the bolts on the third slider 206, the fourth slider 207 and the fifth slider 208 can be removed to slide so as to remove the front triangle of the rough blank, and at the same time, the arc surface covering at the position of the seat member 301 can be completed.

[0048] Furthermore, the first handlebar component 302 and the second handlebar component 303 are arranged on the mold cavity corresponding to the head tube of the front triangle; that is, the first handlebar component 302 and the second handlebar component 303 are added to the upper and lower ends of the head tube of the front triangle, the first handlebar component 302 is a connecting tube, and the second handlebar component 303 is a locking component of the front wheel frame, that is, there is a raised round shaft on the end surface; it is also connected to the frame preform and supported at the same time so that the carbon fiber material can be coated.

[0049] like Figure 1 and Figure 2 As shown, in this embodiment, the lower template 20 located between the first handlebar 302 and the second handlebar 303 is provided with a first slider 204 and a second slider 205, the first slider 204 and the second slider 205 are arranged opposite to each other, and the second slider 205 is located at the front corner of the front triangle. The first slider 204 and the second slider 205 have arc-shaped surfaces on the sides facing the mold cavity, so that when the lower template 20 and the upper template 10 are molded together, the first slider 204 and the second slider 205 are combined to form the required mold cavity. After the manufacturing is completed, the bolts on the first slider 204 and the second slider 205 can be removed and slid to remove the front triangle of the rough blank, and at the same time, the purpose of covering the arc surface at the position of the seat part 301 can be achieved.

[0050] Furthermore, if Figure 5 As shown, the core member 304 includes a core tube 3041 vertically arranged on the lower mold plate 20, and a core cover 3042 docked with the core tube 3041. After the mold is closed, the core cover 3042 docks and fixes with the core tube 3041, forming a fixed position in the carbon fiber bicycle frame mold, and the core tube 3041 is arranged on the mold cavity at the bottom corner of the front triangle. The core member 304 is used for the connection of the pedal shaft hole, and at the same time forms a positioning and placement of the frame preform, ensuring the positioning and stable placement of the frame preform to ensure the fit of the carbon fiber material.

[0051] like Figure 1 and Figure 2 As shown, in this embodiment, a slider group 209 of the rear triangle connecting frame of the bicycle frame is provided at the bottom corner of the front triangle. The mold cavity on the slider group 209 is the connecting frame of the rear triangle, which is used for docking or splicing with the rear triangle. Through the design of the slider group 209, a U-shaped frame body of the rear triangle can be formed at this location to facilitate the placement of corresponding carbon fiber materials and improve practicality.

[0052] like Figure 1 As shown, in this embodiment, a closed-loop sealing groove 2010 is provided on the lower template 20 or the upper template 10, and a rubber sealing strip is placed on the sealing groove 2010. When the lower template 20 and the upper template 10 are molded together, the sealing of the mold cavity can be improved, thereby ensuring the vacuum extraction of the carbon fiber bicycle frame mold, improving the vacuum degree of the vacuum extraction, and realizing the improvement of the quality of the production of the front triangle rough blank.

[0053] like Figure 1 As shown, in this embodiment, a plurality of anti-overflow grooves 2011 are provided on the lower template 20 or the upper template 10, and the anti-overflow grooves 2011 are located between the sealing groove 2010 and the mold cavity. When the applied release agent or adhesive overflows, the anti-overflow grooves 2011 can be used to contain the overflow, thereby avoiding overflow or causing wrinkles or delamination, thereby improving fault tolerance and practicality.

[0054] like Figure 1 As shown, in this embodiment, a punching slider 2012 is provided on the middle part of the front triangle support tube, and a plurality of punching shafts extending into the lower mold cavity 201 are provided on the punching slider 2012. The setting of the punching slider 2012 can open a through hole on the support tube to form a subsequent mounting hole to meet the requirements of the structural design.

[0055] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A carbon fiber bicycle frame mold, characterized in that: include: Frame preform; An upper mold plate, in which an upper mold cavity and a first heating tank are arranged; a lower mold plate, in which a lower mold cavity is arranged opposite to the upper mold cavity, and a second heating groove is arranged opposite to the heating groove; and A vehicle frame core mold assembly is arranged on the lower mold plate, and the vehicle frame core mold assembly is butted or abutted against the vehicle frame preform; When the upper template and the lower template are molded together, the frame preform, the upper template, the lower template and the frame core assembly are assembled to form a mold cavity; The lower template is provided with a ventilating port communicating with the lower mold cavity, and the upper template or the lower template is provided with an air port communicating with the first heating groove.

2. The carbon fiber bicycle frame mold according to claim 1, characterized in that: The upper mold cavity or the lower mold cavity is a cavity groove of the front triangle of the bicycle frame; The first heating groove is arranged on the upper template at the inner hole position of the front triangle, and the second heating groove is arranged on the lower template at the inner hole position of the front triangle.

3. The carbon fiber bicycle frame mold according to claim 2, characterized in that: The frame mold core assembly includes a seat component, a first handlebar component, a second handlebar component arranged opposite to the first handlebar component, and an iron core component, wherein the seat component is arranged on the mold cavity corresponding to the seat support tube of the front triangle, and the first handlebar component and the second handlebar component are arranged on the mold cavity corresponding to the head tube of the front triangle; The core piece includes a core tube vertically arranged on the lower mold plate, and a core cover butted against the core tube, and the core tube is arranged on the mold cavity at the bottom corner of the front triangle.

4. The carbon fiber bicycle frame mold according to claim 3, characterized in that: The lower template located between the first handlebar member and the second handlebar member is provided with a first slider and a second slider, the first slider is arranged opposite to the second slider, and the second slider is located at the front corner of the front triangle.

5. The carbon fiber bicycle frame mold according to claim 3, characterized in that: A third slider, a fourth slider and a fifth slider are arranged on the lower template on both sides of the seat component. The third slider is arranged on the top corner of the front triangle. The third slider is arranged adjacent to the fourth slider and on the same side. The fifth slider is arranged opposite to the third slider.

6. The carbon fiber bicycle frame mold according to claim 3, characterized in that: The bottom corner of the front triangle is provided with a slider group of the rear triangle connecting frame of the bicycle frame.

7. The carbon fiber bicycle frame mold according to claim 1, characterized in that: A closed-loop sealing groove is provided on the lower template or the upper template.

8. The carbon fiber bicycle frame mold according to claim 7, characterized in that: A plurality of anti-overflow grooves are arranged on the lower template or the upper template, and the anti-overflow grooves are located between the sealing groove and the mold cavity.

9. The carbon fiber bicycle frame mold according to claim 3, characterized in that: A punching slider is arranged on the middle part of the support tube of the front triangle, and a plurality of punching shafts extending into the lower mold cavity are arranged on the punching slider.

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