A hot press molding machine for carbon fiber composite

Abstract

A kind of hot press forming machine for carbon fiber composite material, comprising: rack, hot press forming die;Hot press forming die includes top plate, base, support plate, upper die holder, lower die holder, punch press, heater, cooling mechanism;Top plate and base are correspondingly arranged up and down, base is fixed on the upper surface of rack, support plate is arranged between left and right sides between top plate and base, upper die holder is arranged below top plate, upper die holder and lower die holder are correspondingly arranged up and down and located between two support plates, lower die holder is fixed on the upper surface of base;Punch press is arranged on the upper surface of top plate, the punch telescopic rod of punch press is connected with the upper die holder below top plate penetrating top plate, heater is embedded in the inside of upper die holder and lower die holder, cooling mechanism is arranged on support plate.The utility model aims to provide a kind of hot press forming machine for carbon fiber composite production, aims to improve cooling efficiency, reduce equipment vibration, to provide more efficient, stable solution for the molding of carbon fiber composite material.

Description

Technical Field

[0001] This utility model relates to the field of hot pressing equipment technology, specifically to a hot pressing machine for carbon fiber composites. Background Technology

[0002] In modern industrial manufacturing, with the continuous advancement of technology, the application of composite materials is becoming increasingly widespread. Among them, carbon fiber composite materials, with their unique performance advantages, are playing an increasingly important role in many fields. Carbon fiber composite materials are materials formed by curing high-strength, high-rigidity carbon fibers and resin matrices with specific properties through various methods.

[0003] Currently, hot pressing is one of the molding processes for fiber composite materials. Existing carbon fiber hot pressing machines have some shortcomings. First, they lack effective cooling devices, resulting in a long cooling process and a long overall molding cycle, leading to low production efficiency. Furthermore, the equipment is prone to vibration during operation, which not only affects its stability and service life but may also adversely impact the quality of the molded products.

[0004] To address the problems existing in the prior art, improve the molding quality and production efficiency of carbon fiber composites, and reduce production costs, this invention develops a hot press molding machine for carbon fiber composites, aiming to improve cooling efficiency and reduce equipment vibration, thereby providing a more efficient and stable solution for the molding of carbon fiber composites. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a hot pressing molding machine for carbon fiber composites, which aims to improve cooling efficiency, reduce equipment vibration, thereby improving production efficiency and equipment stability, and has broad application prospects.

[0006] Technical solution: A hot pressing machine for carbon fiber composites, comprising: frame; A hot pressing forming mold, wherein the hot pressing forming mold is disposed at the center of the machine frame; The hot-press forming mold includes a top plate, a base, a support plate, an upper mold base, a lower mold base, a stamping machine, a heater, and a cooling mechanism. The top plate and the base are arranged vertically and vertically, and the base is fixed to the upper surface of the frame. Support plates are arranged on the left and right sides between the top plate and the base. The upper mold base is located below the top plate. The upper mold base and the lower mold base are arranged vertically and vertically and located between two support plates. The lower mold base is fixed to the upper surface of the base. The stamping machine is located on the upper surface of the top plate. The stamping telescopic rod of the stamping machine passes through the top plate and connects to the upper mold base below. Heaters are embedded inside both the upper mold base and the lower mold base. There are two cooling mechanisms, which are symmetrically arranged on the two support plates.

[0007] The hot pressing molding machine for carbon fiber composites described in this utility model includes a frame and a hot pressing molding die mounted on the frame.

[0008] The frame provides a stable support structure for the entire thermoforming machine, ensuring stability during operation. The thermoforming mold is positioned centrally within the frame, a layout that stabilizes the machine's center of gravity and improves molding precision. The top plate, base, and support plate within the thermoforming mold form a stable frame structure, ensuring the installation and operation of the upper and lower mold bases. The press allows for the vertical movement of the upper mold base, facilitating mold closing and opening with the lower mold base, and working in conjunction with the heater to thermoform the carbon fiber prepreg. The symmetrical arrangement of the cooling mechanism ensures more even cooling of the upper and lower mold bases, improving cooling efficiency and reducing the molding cycle time.

[0009] Furthermore, in the aforementioned hot press molding machine for carbon fiber composites, the cooling mechanism includes an air-cooled box, a fan, and an adjustment component; the air-cooled box is located inside the support plate, and a motor is installed inside the air-cooled box, with the motor connected to the fan via the adjustment component.

[0010] The cold box provides a relatively independent working space for the fan, while also offering some protection for its operation. The motor is connected to the fan via an adjustable assembly, allowing for customized fan operation and a more flexible cooling method. The fan's rotation generates airflow, which cools the upper and lower mold bases through ventilation slots. Compared to traditional natural cooling, air cooling is more efficient, effectively shortening cooling time and improving production efficiency.

[0011] Furthermore, in the aforementioned hot press molding machine for carbon fiber composites, the adjustment assembly includes a rotating rod one, an adjusting rod, and a rotating rod two. The output end of the motor is connected to one end of the rotating rod one, and the other end of the rotating rod one is slidably connected to the adjusting rod. Both ends of the adjusting rod are fixedly connected to the rotating rod two, and the other ends of the two rotating rod two are fixedly connected to fans.

[0012] The coordination of rotating rod one, adjusting rod, and rotating rod two in the adjustment assembly allows the motor's rotation to be converted into the up-and-down movement of the fan. The sliding of rotating rod one within the through slot drives the adjusting rod, which in turn moves rotating rod two and the fan, achieving the fan's reciprocating motion within a certain range. This up-and-down reciprocating movement of the fan expands the airflow range, ensuring effective cooling of all parts of the upper and lower mold bases and improving cooling uniformity.

[0013] Furthermore, in the aforementioned hot pressing machine for carbon fiber composites, a through groove is provided on one side wall of the adjusting rod, and the other end of the rotating rod is disposed in the through groove and slidably connected to the through groove.

[0014] The through groove on one side wall of the adjusting rod provides a track for the sliding of the first rotating rod, allowing it to slide smoothly within the groove during rotation and ensuring the normal operation of the adjusting assembly. The sliding of the first rotating rod within the through groove stably transmits the motor's power to the adjusting rod, which in turn drives the second rotating rod and the fan to move, ensuring accurate fan movement and rotation and improving the operational stability of the cooling mechanism.

[0015] Furthermore, in the aforementioned hot pressing molding machine for carbon fiber composites, the air-cooled box has sliding grooves on both sides of its inner sidewalls. The two sliding grooves correspond to the two fans respectively, and the fans are installed in the sliding grooves and slidably connected to the sliding grooves.

[0016] The sliding grooves on both sides of the internal sidewalls of the air-cooled enclosure correspond to the fans. The fans are mounted within and slidably connected to the grooves. The grooves restrict the fan's movement, allowing it to move only up and down, preventing wobbling or deviation during operation. By restricting the fan's movement through the grooves, stability is ensured during movement, resulting in more consistent airflow direction and force, thus improving the stability and uniformity of cooling.

[0017] Furthermore, in the aforementioned hot press molding machine for carbon fiber composites, the support plate has several ventilation slots on the side wall near the lower mold base.

[0018] Several ventilation slots are provided on the side walls of the support plate near the lower mold base, offering channels for air cooling. This allows the airflow generated by the fan to be effectively directed to the upper and lower mold bases, enhancing ventilation. The presence of these ventilation slots also promotes good air convection around the upper and lower mold bases, accelerating heat dissipation and thus improving cooling efficiency.

[0019] Furthermore, the aforementioned hot press molding machine for carbon fiber composites has vibration dampers installed at the four corners of the bottom of the frame.

[0020] Installing vibration dampers at the four corners of the frame bottom can effectively reduce vibrations generated during equipment operation. Reduced vibration improves equipment stability and extends its service life.

[0021] Furthermore, in the aforementioned hot pressing molding machine for carbon fiber composites, the vibration damper includes a vibration damping bracket, a mass block, vibration damping rubber I, vibration damping rubber II, a screw, a nut, a protective shell I, a protective shell II, and a washer; the vibration damping bracket, vibration damping rubber I, the mass block, and vibration damping rubber II are arranged sequentially from bottom to top; the screw passes through the vibration damping bracket, vibration damping rubber I, the mass block, and the vibration damping rubber, and a nut is provided above the screw; protective shell I is provided at the upper and lower ends of vibration damping rubber I; protective shell II is provided at the upper and lower ends of vibration damping rubber II; and a washer is provided at the connection between the screw and the vibration damping bracket.

[0022] The symmetrical structure and unique design of the vibration damper enable it to withstand cyclic tensile and compressive loads, achieving bidirectional vibration reduction in the axial direction. The relative preload of the pair of rubber components can be controlled by adjusting bolts and nuts, thereby enhancing the damping effect. The vibration damping bracket connects and fixes the other components of the damper, while the protective shell provides support and protection for rubber components one and two, organically combining the pair of rubber components into a whole. This design effectively protects the rubber parts, extends their service life, and also improves the overall performance of the vibration damper.

[0023] The beneficial effects of this utility model are as follows: The hot press molding machine for carbon fiber composites described in this utility model is rationally designed. During the hot press molding process, the precise coordination between the heater and the press ensures that the carbon fiber prepreg is fully molded under high temperature and high pressure conditions, allowing the resin to fully impregnate the carbon fiber and form a carbon fiber composite product with a certain strength and shape. The uniform cooling mechanism can avoid product deformation and internal stress problems caused by uneven cooling, improving the dimensional accuracy and surface quality of the product. The vibration damper can reduce the impact of equipment vibration on product quality, ensuring product consistency and stability. It meets the requirements of hot press molding of carbon fiber composites and is suitable for the production of various carbon fiber composite products. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the hot pressing molding machine for carbon fiber composites described in this utility model; Figure 2 This is a schematic diagram of the internal structure of the hot pressing mold for the hot pressing machine for carbon fiber composites described in this utility model; Figure 3 This is a schematic diagram of the cooling mechanism of the hot pressing machine for carbon fiber composites described in this utility model; Figure 4 This is a schematic cross-sectional view of the vibration damper structure for the hot pressing machine for carbon fiber composites described in this utility model; In the picture: Frame 1, Hot pressing mold 2, Top plate 21, Base 22, Support plate 23, Ventilation slot 231, Upper mold base 24, Lower mold base 25, Stamping machine 26, Heater 27, Air cooling box 28, Motor 281, Slide 282, Fan 29, Adjustment assembly 30, Rotating rod 1 301, Adjusting rod 302, Through slot 3021, Rotating rod 2 303, Vibration damper 3, Vibration damping bracket 31, Mass block 32, Vibration damping rubber 1 33, Vibration damping rubber 2 34, Screw 35, Nut 36, Protective shell 1 37, Protective shell 2 38, Gasket 39. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 , 2 Examples 3, 4 and 1 further illustrate this utility model.

[0026] Example 1 like Figure 1-4 As shown, this embodiment 1 provides a hot pressing molding machine for carbon fiber composites, including a frame 1, a hot pressing molding die 2, and a vibration damper 3, as detailed below: I. Installation 1. Installation of frame 1 and vibration damper 3 Choose a suitable installation site, ensuring the ground is flat and firm enough to withstand the weight of the thermoforming machine and the forces generated during operation.

[0027] Move the frame 1 to the installation position and install the vibration dampers 3 at the four corners of the bottom of the frame 1.

[0028] The vibration damping bracket 31, vibration damping rubber 1 33, mass block 32, and vibration damping rubber 2 34 are arranged sequentially from bottom to top. Screws 35 are used to pass through the vibration damping bracket 31, vibration damping rubber 1 33, mass block 32, and vibration damping rubber 2 34, and nuts 36 are installed above the screws 35 for fastening.

[0029] Protective shell 37 is installed on the upper and lower ends of the vibration damping rubber 33, and protective shell 38 is installed on the upper and lower ends of the vibration damping rubber 34, so as to protect the vibration damping rubber from damage.

[0030] Install a gasket 39 at the connection between the screw 35 and the vibration damping bracket 31 to increase the stability and sealing of the connection. During this process, use a level to check the levelness of the frame 1 and adjust the vibration damper 3 to make the frame 1 level.

[0031] 2. Installation of hot pressing mold 2 Fix the base 22 to the upper surface of the frame 1 and tighten it with bolts to ensure a secure connection.

[0032] Support plates 23 are installed on the left and right sides of the upper surface of the base 22, and are connected by welding or bolts to ensure that the support plates 23 are perpendicular to the base 22 and are tightly connected.

[0033] The top plate 21 is installed above the support plate 23, so that it is aligned vertically with the base 22. It is then fastened with bolts to form a stable frame structure.

[0034] The lower mold base 25 is fixed on the upper surface of the base 22 to ensure that its position is accurate and that its relative position with the top plate 21 and the support plate 23 meets the design requirements.

[0035] The upper mold base 24 is installed below the top plate 21, so that it is vertically aligned with the lower mold base 25 and located between the two support plates 23. Heaters 27 are embedded inside the upper mold base 24 and the lower mold base 25. The power cord connecting the heater 27 is ensured to be correctly and securely wired to avoid safety hazards such as electrical leakage.

[0036] 3. Installation of stamping machine 26 Install the stamping machine 26 on the upper surface of the top plate 21, ensuring that its installation position is accurate and that the center line of the stamping telescopic rod coincides with the center line of the upper die base 24.

[0037] The stamping telescopic rod of the stamping press 26 passes through the top plate 21 and is connected to the upper die base 24 below. A coupling or other connection method is used to ensure a firm connection and reliable power transmission.

[0038] 5. Cooling mechanism installation The air-cooled boxes 28 are symmetrically installed on the two support plates 23 respectively. The air-cooled boxes 28 are fixed inside the support plates 23 with bolts to ensure that their installation position is accurate and that the connection with the support plates 23 is tight.

[0039] The motor 281 is installed inside the air-cooled box 28, ensuring that its installation position is stable. The output shaft of the motor 281 is connected to one end of the rotating rod 301 of the adjusting component 30. A coupling or other connection method is used to ensure a firm connection and reliable power transmission.

[0040] The adjusting rod 302 is installed inside the air-cooled box 28, and the other end of the rotating rod 301 is set in the through groove 3021 opened on one side wall of the adjusting rod 302, and is slidably connected to the through groove 3021.

[0041] Rotating rods 303 are fixedly connected to both ends of the adjusting rod 302, and fans 29 are fixedly connected to the other ends of the two rotating rods 303.

[0042] Slide grooves 282 are provided on both sides of the interior of the air-cooled box 28, so that the two slide grooves 282 correspond to the two fans 29 respectively.

[0043] The fan 29 is placed inside the slide 282 and is slidably connected to the slide 282 to ensure that the fan 29 can move smoothly up and down within the slide 282.

[0044] II. Debugging 1. Electrical system commissioning Check that the electrical wiring connections are correct and secure, and ensure that the insulation performance of each electrical component is good.

[0045] Turn on the power and check whether the working status of each electrical component is normal, such as motor 281, heater 27, and press 26.

[0046] 2. Mechanical system debugging Check whether the installation of each mechanical component is correct and secure, such as the stamping telescopic rod of the stamping press 26, the moving parts of the upper die holder 24 and the lower die holder 25, etc.

[0047] Manually operate the stamping machine 26 to check whether the upper die holder 24 moves smoothly up and down, and whether the mold closing and opening operations with the lower die holder 25 are accurate.

[0048] Start motor 281, check whether the rotation and up-and-down reciprocating movement of fan 29 are normal, observe the operation of adjustment component 30, and ensure that it can stably transmit the power of motor 281 to fan 29.

[0049] 3. Temperature and pressure adjustment Start the heater 27 so that the temperature of the upper mold base 24 and the lower mold base 25 can accurately reach the set value, and the temperature fluctuation range is within the allowable error range.

[0050] The pressure control system of the press 26 is adjusted to ensure that the press 26 can provide sufficient, uniform and adjustable pressure, so as to ensure that the pressure can be applied evenly to the carbon fiber prepreg during the hot pressing process.

[0051] III. Hot Press Molding Operation Process 1. Preparation The carbon fiber prepreg is cut into appropriate sizes and shapes and placed inside the lower mold base 25.

[0052] 2. Hot pressing process Start the heater 27 to heat the upper mold base 24 and the lower mold base 25 to the set temperature.

[0053] Start the press 26 to move the upper mold base 24 downward and close it with the lower mold base 25, apply the set pressure to the carbon fiber prepreg and hold it for a certain time, so that the carbon fiber prepreg is fully formed under high temperature and high pressure.

[0054] 3. Cooling process After hot pressing is completed, the cooling mechanism is activated. The motor 281 drives the adjustment component 30, causing the fan 29 to move up and down in the slide 282. The fan blows air through the ventilation slot 231 to cool the upper mold base 24 and the lower mold base 25, thereby accelerating the cooling speed of the molded product and reducing the molding cycle.

[0055] 4. Demolding operation After the molded product cools to a certain temperature, the stamping machine 26 is started, causing the upper mold base 24 to move upward and open with the lower mold base 25.

[0056] The molded product is removed from the lower mold base 25 for subsequent processing and inspection.

[0057] In summary, this invention enables the hot pressing machine for carbon fiber composites to operate efficiently and stably, thereby improving the molding quality and production efficiency of carbon fiber composite materials.

[0058] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A hot pressing machine for carbon fiber composites, characterized in that, include: Rack (1); Hot pressing mold (2), the hot pressing mold (2) is set at the center of the frame (1); The hot-press forming mold (2) includes a top plate (21), a base (22), a support plate (23), an upper mold base (24), a lower mold base (25), a stamping machine (26), a heater (27), and a cooling mechanism. The top plate (21) and the base (22) are arranged vertically and vertically respectively. The base (22) is fixed on the upper surface of the frame (1). Support plates (23) are arranged on the left and right sides between the top plate (21) and the base (22). The upper mold base (24) is arranged below the top plate (21). (24) The lower die base (25) is arranged vertically and vertically between two support plates (23). The lower die base (25) is fixed on the upper surface of the base (22). The stamping machine (26) is arranged on the upper surface of the top plate (21). The stamping telescopic rod (261) of the stamping machine (26) passes through the top plate (21) and connects to the upper die base (24) below. The upper die base (24) and the lower die base (25) are both equipped with heaters (27). There are two cooling mechanisms, which are symmetrically arranged on the two support plates (23).

2. The hot pressing machine for carbon fiber composites according to claim 1, characterized in that, The cooling mechanism includes an air-cooled box (28), a fan (29), and an adjustment component (30); the air-cooled box (28) is located inside the support plate (23), and a motor (281) is installed inside the air-cooled box (28). The motor (281) is connected to the fan (29) through the adjustment component (30).

3. The hot pressing machine for carbon fiber composites according to claim 2, characterized in that, The adjustment assembly (30) includes a rotating rod one (301), an adjusting rod (302), and a rotating rod two (303). The output end of the motor (281) is connected to one end of the rotating rod one (301). The other end of the rotating rod one (301) is slidably connected to the adjusting rod (302). Both ends of the adjusting rod (302) are fixedly connected to the rotating rod two (303). The other ends of the two rotating rod two (303) are fixedly connected to the fan (29).

4. The hot pressing machine for carbon fiber composites according to claim 3, characterized in that, The adjusting rod (302) has a through groove (3021) on one side wall, and the other end of the rotating rod (301) is set in the through groove (3021) and is slidably connected to the through groove (3021).

5. The hot pressing machine for carbon fiber composites according to claim 2, characterized in that, The air-cooled box (28) has sliding grooves (282) on both sides inside. The two sliding grooves (282) correspond to the two fans (29) respectively. The fans (29) are set in the sliding grooves (282) and are slidably connected to the sliding grooves (282).

6. The hot pressing machine for carbon fiber composites according to claim 2, characterized in that, The support plate (23) and the lower mold base (25) have several ventilation slots (231) on their side walls.

7. The hot pressing machine for carbon fiber composites according to claim 1, characterized in that, Vibration dampers (3) are installed at the four corners of the bottom of the frame (1).

8. The hot pressing machine for carbon fiber composites according to claim 7, characterized in that, The vibration damper (3) includes a vibration damping bracket (31), a mass block (32), a vibration damping rubber I (33), a vibration damping rubber II (34), a screw (35), a nut (36), a protective shell I (37), a protective shell II (38), and a washer (39); the vibration damping bracket (31), vibration damping rubber I (33), mass block (32), and vibration damping rubber II (34) are arranged sequentially from bottom to top; the screw (35) passes through the vibration damping bracket (31), vibration damping rubber I (33), mass block (32), and vibration damping rubber II (34), and a nut (36) is provided above the screw; a protective shell I (37) is provided at the upper and lower ends of the vibration damping rubber I (33); a protective shell II (38) is provided at the upper and lower ends of the vibration damping rubber II (34); a washer (39) is provided at the connection between the screw (35) and the vibration damping bracket (31).

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