Carbon fiber material extrusion forming die and method

Abstract

The invention belongs to the technical field of carbon fiber materials, particularly relates to a carbon fiber material extrusion forming die and method, and provides the following scheme aiming at the problems that impurities are difficult to remove and redundant materials are not precisely cut off: the carbon fiber material extrusion forming die comprises a workbench, and the top end of the workbench is fixedly connected with a plurality of sliding columns; lower pressing plates are movably connected to the outer sides of the sliding columns correspondingly, extrusion columns are fixedly connected to the bottom ends of the lower pressing plates, extrusion plates are fixedly connected to the top ends of the extrusion columns, extrusion molds are arranged below the extrusion plates, and symmetrical cleaning and cutting assemblies are arranged on the two sides of the extrusion molds. And a constant-temperature assembly is arranged in the rectangular hole. According to the carbon fiber material extrusion forming die and method, impurities can be rapidly removed, the influence of the impurities on the quality of a carbon fiber product is avoided, a good die environment is provided for precise extrusion, redundant materials can be precisely cut off, and the size precision and appearance quality of the product are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber materials, and in particular to a carbon fiber material extrusion forming die and method. Background Art

[0002] A carbon fiber extrusion mold is a mold used to manufacture carbon fiber reinforced plastic products. It is mainly used to solidify and shape carbon fiber composite materials through heating and pressurization. This mold is usually made of carbon fiber composite materials and has the advantages of being lightweight, high-strength, high-precision, wear-resistant and corrosion-resistant.

[0003] Existing equipment struggles to effectively remove impurities, causing them to continuously interfere with the quality of carbon fiber products. This makes it impossible to create good mold conditions for precise extrusion, and there is no precision in removing excess material, resulting in chaotic product dimensions and inferior appearance. Summary of the Invention

[0004] The present invention discloses a carbon fiber material extrusion forming die and method, aiming to solve the technical problems in the background technology of difficulty in removing impurities, failure to provide good die conditions for precise extrusion, inaccurate removal of excess material, resulting in chaotic product size and poor appearance.

[0005] The carbon fiber material extrusion forming die proposed by the present invention includes a workbench, a plurality of sliding columns are fixedly connected to the top of the workbench, the outer sides of the sliding columns are movably connected to a lower pressure plate, and the bottom end of the lower pressure plate is fixedly connected to an extrusion column, the top end of the extrusion column is fixedly connected to an extrusion plate, an extrusion die is arranged below the extrusion plate, symmetrical cleaning and cutting components are arranged on both sides of the extrusion die, a rectangular hole is opened inside the workbench, and a constant temperature component is arranged inside the rectangular hole; The cleaning and cutting assembly includes an arc-shaped tool, an arc-shaped air box is provided above the arc-shaped tool, and a plurality of air nozzles are provided on the outside of the arc-shaped air box, and the air nozzles are all located above the extrusion die; The constant temperature component includes a temperature plate, a plurality of heat sinks are fixedly connected to the lower side of the temperature plate, and temperature sensors are arranged on the outer sides of the heat sinks.

[0006] In a preferred embodiment, the cleaning and cutting assembly also includes a fixed frame, the inner side of the fixed frame is fixedly connected to the electric telescopic rod, the front end of the electric telescopic rod is provided with a limit frame, the limit frame is provided with a circular hole on one side close to the electric telescopic rod, and the electric telescopic rod is movably connected between the inside of the circular hole, the inner side of the limit frame is fixedly connected to a symmetrical connecting rod, the front end of the electric telescopic rod is fixedly connected to a sliding member, the inner side of the bottom end of the sliding member is movably connected to the outer side of the connecting rod, and the top of the sliding member is fixedly connected to the connecting frame, the front end of the connecting frame is fixedly connected to a connecting member, a telescopic electric rod is provided on the connecting member, the bottom end of the telescopic electric rod is fixedly connected to a base frame, the base frame is located below the connecting member, the bottom end of the base frame is fixedly connected to the top end of the arc tool, the outer side of the arc tool is in contact with the inner side of the extrusion die, and the front end of the connecting member is fixedly connected to a side of the arc air box close to the telescopic electric rod, the top of the arc air box is fixedly connected to an air connection head, the top of the air connection head is fixedly connected to an air supply pipe, and one end of the air supply pipe close to the electric telescopic rod is fixedly connected to an air pump.

[0007] By providing a cleaning and cutting component, the carbon fiber material is started before and after extrusion. Before extrusion, the electric telescopic rod starts to work and extends forward. Since the electric telescopic rod is located in the circular hole of the limit frame and is movably connected, during the extension process, it drives the sliding part to slide forward along the symmetrical connecting rod inside the limit frame. When the sliding part slides forward, it drives the connecting frame fixedly connected to its top to move forward, and the connecting frame drives the connecting part at the front end to move forward, and the gas is transported to the gas connecting head through the gas pipe, thereby filling the arc gas box with gas, and the gas is ejected from multiple gas nozzles on the outside of the arc gas box to clean the top of the extrusion die and remove possible impurities, etc., to prepare for the subsequent placement of the carbon fiber material. After the cleaning is completed, the electric telescopic rod returns to its original position, the cleaning and cutting component is located on the outside of the extrusion plate, and then the carbon fiber material begins to be extruded. The movable telescopic rod moves again, the telescopic electric rod on the connecting part starts and extends downward, driving the base frame fixed at the bottom end to move downward, and the base frame then drives the arc-shaped tool connected to it to move downward until the outer side of the arc-shaped tool contacts the inner side of the extrusion die. Under the control of the electric telescopic rod and the telescopic electric rod, the arc-shaped tool moves downward along the contour of the inner side of the extrusion die to cut off the excess carbon fiber material after extrusion molding and separate it from the molded carbon fiber product. After the cutting is completed, the telescopic electric rod retracts, driving the arc-shaped tool to lift up and detach from the extrusion die. In the process, impurities can be removed quickly and effectively to prevent impurities from mixing into the carbon fiber material and affecting the product quality, providing a good mold environment for the precise extrusion molding of carbon fiber materials, and at the same time achieving precise cutting of excess carbon fiber materials to ensure the dimensional accuracy and appearance quality of the product.

[0008] In a preferred solution, the two sides of the workbench are fixedly connected with extension platforms, the tops of the extension platforms are fixedly connected with air pump frames, the inner sides of the air pump frames are fixedly connected to the outer sides of the air pump machines, and the bottom ends of the fixed frames are fixedly connected to the top ends of the extension platforms, the top ends of the sliding columns are fixedly connected with top plates, the bottom ends of the top plates are fixedly connected with a plurality of auxiliary round rods, a plurality of holes are provided on the extrusion plate, the auxiliary round rods are movably connected to the insides of the holes, the bottom ends of the auxiliary round rods are fixedly connected with a base, and the opposite sides of the base are fixedly connected to the two sides of the workbench, the top ends of the workbench are fixedly connected with a working plate, the temperature plate is located above the working plate, and the rectangular hole is located below the working plate.

[0009] In a preferred embodiment, the constant temperature component also includes a constant temperature frame, the outer side of the constant temperature frame is fixedly connected to the inner side of the rectangular hole, the inner bottom end of the constant temperature frame is fixedly connected to a symmetrical retaining frame, the inner side of the retaining frame is fixedly connected to a heater, and the outer side of the heater is fixedly connected to a hot air separation delivery head, the outer side of the hot air separation delivery head is fixedly connected to a plurality of delivery pipes, the top end of the delivery pipe is fixedly connected to the bottom end of the heat dissipation head on both sides, the outer side of the delivery pipe is movably connected to a retaining cylinder, the outer side of the retaining cylinder is fixedly connected to a mounting frame, the bottom end of the mounting frame is fixedly connected to the inner side of the bottom end of the constant temperature frame, the hot air separation delivery head The outside of each of the heat sinks is fixedly connected with a plurality of vertical tubes, and the top ends of the vertical tubes are fixedly connected to the bottom ends of the heat sinks located in the middle. The outsides of the vertical tubes and the delivery tubes are fixedly connected with fixed plates, and the bottom ends of the temperature sensors are fixedly connected to the top ends of the fixed plates. The top ends of the temperature sensors are fixedly connected with symmetrical detection needles, which are located on both sides of the heat sinks. The top ends of the detection needles are in contact with the bottom ends of the temperature plates. The bottom ends of the temperature plates are fixedly connected with a plurality of external connecting tubes, and the heat sinks, temperature sensors and detection needles are all located on the inner sides of the external connecting tubes. A plurality of through holes are provided on the working plate, and the outer sides of the external connecting tubes are fixedly connected to the inner sides of the through holes.

[0010] By providing a constant temperature component, when the extrusion die is heated before the carbon fiber material is extruded, the heater in the constant temperature component is started, the heater starts to work to generate heat, and the heat is diverted through the hot gas separation conveying head, and part of the heat is transmitted to the heat dissipation heads located on both sides below the temperature plate through multiple conveying pipes fixedly connected to the outside of the hot gas separation conveying head. When the hot air flows in the conveying pipe, the retaining cylinder plays the role of fixing and stabilizing the conveying pipe. The mounting frame connects the retaining cylinder to the constant temperature frame to ensure the stability of the entire conveying structure. The other part of the heat is transmitted to the heat dissipation head located in the middle below the temperature plate through multiple vertical pipes on the outside of the hot gas separation conveying head. After the heat dissipation head obtains heat, it transfers the heat to the temperature plate, and the temperature plate then evenly dissipates the heat to the extrusion die, preheating the extrusion die so that the die reaches a temperature suitable for the extrusion of carbon fiber materials. During the extrusion process of the carbon fiber material, the temperature sensor starts to work, and the symmetrical detection needles at the top of the temperature sensor contact the bottom of the temperature plate. , monitor the temperature of the temperature plate in real time, and the temperature sensor feeds back the monitored temperature data to the control system. If the temperature is higher than the set constant temperature value, the control system will appropriately reduce the power of the heater to reduce heat generation. At the same time, the heat sink will also speed up the heat dissipation speed to drop the temperature to the set value. If the temperature is lower than the set constant temperature value, the control system will increase the power of the heater to generate more heat, which will be transferred to the heat sink through the conveying pipe and the vertical pipe, thereby raising the temperature of the temperature plate to reach the set constant temperature value. During the entire extrusion process, the temperature sensor continuously monitors the temperature, and the control system continuously adjusts the heater power and the heat dissipation of the heat sink to ensure that the temperature of the temperature plate is stable, thereby keeping the temperature inside the extrusion die constant, providing a stable temperature environment for the extrusion molding of carbon fiber materials, and ensuring product quality. During the process, by precisely controlling the temperature of the extrusion die, the carbon fiber material can be extruded in a stable temperature environment, reducing product defects caused by temperature fluctuations.

[0011] The method for using the carbon fiber material extrusion forming die, using the carbon fiber material extrusion forming die as described above, comprises the following steps: Step 1: Before extrusion molding of the carbon fiber material, multiple air nozzles on the outside of the arc-shaped air box of the cleaning component are used to clean the top of the extrusion die to remove impurities on the die. The cleaned carbon fiber material is placed on the extrusion die, and the lower pressure plate drives the extrusion column and the extrusion plate to move downward, applying pressure to the carbon fiber material to extrude it into shape in the extrusion die. Step 2: During this process, the constant temperature component located in the rectangular hole inside the workbench starts working. The heat sink under the temperature plate and the temperature sensor on the outside work together to maintain the temperature inside the extrusion die stable, ensuring that the carbon fiber material can be formed in a suitable temperature environment; Step three, when the carbon fiber material is extruded, the cleaning and cutting assembly is operated again, at this time the arc-shaped cutter cuts the excess carbon fiber material after extrusion, so that the final product reaches the required shape and specifications.

[0012] As can be seen from the above, the carbon fiber material extrusion forming die provided by the application has the advantages of rapid impurity removal, avoiding the influence of impurities on the quality of carbon fiber products, providing a good die environment for precise extrusion, and also precisely cutting off excess material to ensure product size precision and appearance quality. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The overall structure diagram of the carbon fiber material extrusion forming die provided by the application is shown in the figure. Figure 2 The workbench structure diagram of the carbon fiber material extrusion forming die provided by the application is shown in the figure. Figure 3 The internal structure diagram of the workbench of the carbon fiber material extrusion forming die provided by the application is shown in the figure. Figure 4 The structure diagram above the workbench of the carbon fiber material extrusion forming die provided by the application is shown in the figure. Figure 5 The cleaning and cutting assembly structure diagram of the carbon fiber material extrusion forming die provided by the application is shown in the figure. Figure 6 The partial structure diagram of the cleaning and cutting assembly of the carbon fiber material extrusion forming die provided by the application is shown in the figure. Figure 7 The constant temperature assembly structure diagram of the carbon fiber material extrusion forming die provided by the application is shown in the figure. Figure 8 The partial structure diagram of the constant temperature assembly of the carbon fiber material extrusion forming die provided by the application is shown in the figure.

[0014] In the figure: 1, workbench; 2, extension table; 3, sliding column; 4, lower pressure plate; 5, air pump frame; 6, top plate; 7, cleaning and cutting assembly; 701, fixed frame; 702, electric telescopic rod; 703, limit frame; 704, connecting rod; 705, sliding member; 706, connecting frame; 707, connecting member; 708, telescopic electric rod; 709, bottom frame; 710, curved tool; 711, curved air box; 712, air jet nozzle; 713, air connection head; 714, air pipe; 715, air Pump; 8. Extrusion plate; 9. Constant temperature assembly; 901. Constant temperature frame; 902. Retaining frame; 903. Heater; 904. Hot gas separation delivery head; 905. Delivery pipe; 906. Mounting frame; 907. Retaining cylinder; 908. Vertical tube; 909. External cylinder; 910. Temperature plate; 911. Fixing plate; 912. Temperature sensor; 913. Probe; 914. Heat sink; 10. Auxiliary round rod; 11. Base; 12. Extrusion column; 13. Working plate; 14. Extrusion die. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] The carbon fiber material extrusion forming die disclosed in the present invention is mainly used in scenarios where impurities are difficult to remove, which interfere with the extrusion forming quality of the carbon fiber material, cannot provide good mold conditions for precise extrusion, and cannot accurately remove excess material, resulting in dimensional confusion and poor appearance.

[0017] Reference Figure 1-8 , a carbon fiber material extrusion forming die includes a workbench 1, a plurality of sliding columns 3 are fixedly connected to the top of the workbench 1, the outer sides of the sliding columns 3 are movably connected to the lower pressing plate 4, and the bottom end of the lower pressing plate 4 is fixedly connected to the extrusion column 12, the top of the extrusion column 12 is fixedly connected to the extrusion plate 8, an extrusion die 14 is provided below the extrusion plate 8, and symmetrical cleaning and cutting components 7 are provided on both sides of the extrusion die 14. A rectangular hole is opened inside the workbench 1, and a constant temperature component 9 is provided inside the rectangular hole; The cleaning and cutting assembly 7 includes an arc-shaped tool 710, an arc-shaped air box 711 is provided above the arc-shaped tool 710, and a plurality of air nozzles 712 are provided on the outside of the arc-shaped air box 711. The air nozzles 712 are all located above the extrusion die 14; The constant temperature component 9 includes a temperature plate 910 , a plurality of heat sinks 914 are fixedly connected to the bottom of the temperature plate 910 , and temperature sensors 912 are provided on the outside of the heat sinks 914 .

[0018] Reference Figure 2 、 Figure 3 、 Figure 4 , Figure 5 and Figure 6 The cleaning and cutting assembly 7 also includes a fixing frame 701, the inner side of the fixing frame 701 is fixedly connected to the electric telescopic rod 702, the front end of the electric telescopic rod 702 is provided with a limiting frame 703, the limiting frame 703 is provided with a circular hole on one side close to the electric telescopic rod 702, and the electric telescopic rod 702 is movably connected between the inside of the circular hole, the inner side of the limiting frame 703 is fixedly connected to a symmetrical connecting rod 704, the front end of the electric telescopic rod 702 is fixedly connected to a sliding member 705, the inner side of the bottom end of the sliding member 705 and the outer side of the connecting rod 704 are movably connected, and the top of the sliding member 705 is fixedly connected to a connecting frame 706, and the front end of the connecting frame 706 is fixedly connected to the connecting member 7 07. A telescopic electric rod 708 is provided on the connecting member 707. The bottom end of the telescopic electric rod 708 is fixedly connected to a base frame 709. The base frame 709 is located below the connecting member 707. The bottom end of the base frame 709 is fixedly connected to the top of the arc-shaped tool 710. The outer side of the arc-shaped tool 710 is in contact with the inner side of the extrusion mold 14. The front end of the connecting member 707 is fixedly connected to the side of the arc-shaped air box 711 close to the telescopic electric rod 708. The top of the arc-shaped air box 711 is fixedly connected to an air connection head 713. The top of the air connection head 713 is fixedly connected to an air supply pipe 714. The end of the air supply pipe 714 close to the electric telescopic rod 702 is fixedly connected to an air pump machine 715.

[0019] Specifically, before the carbon fiber material is extruded, the electric telescopic rod 702 extends forward. Due to its active connection with the circular hole of the limit frame 703, it drives the sliding member 705 to slide along the connecting rod 704, thereby causing the connecting frame 706 and the connecting member 707 to move forward. At the same time, the air pump 715 supplies air to the air connector 713 through the air pipe 714, so that the arc-shaped air box 711 is filled with air. The air nozzle 712 sprays air to clean the extrusion die 14 and remove impurities. After cleaning, the electric telescopic rod 702 returns to its original position, and the assembly is located at On the outside of the extrusion plate 8, after the carbon fiber material is extruded into shape, the electric telescopic rod 702 moves again, and the telescopic electric rod 708 on the connecting piece 707 starts to extend downward, driving the base frame 709 and the arc-shaped tool 710 to move down until they contact the inside of the extrusion mold 14. Under the control of the electric telescopic rod 702 and the telescopic electric rod 708, the arc-shaped tool 710 moves downward along the inner contour of the mold to cut off the excess carbon fiber material after cutting. After the cutting is completed, the telescopic electric rod 708 retracts and the arc-shaped tool 710 leaves the mold.

[0020] Electric telescopic pole and telescopic electric pole parameters Electric telescopic rod 702: The thrust is set to 800-1200N, which can meet the power requirements of the cleaning and cutting actions before and after the extrusion of carbon fiber materials, ensuring that the arc air box moves accurately to the cleaning position and the arc tool stably fits the inside of the mold; the stroke range is 150-200mm, which is suitable for the distance between the workbench and the extension table, and can cover the cleaning area above the extrusion mold and the cutting path inside the mold; the speed control adopts a step adjustment method. The speed in the cleaning stage is 50-80mm / s to avoid excessive airflow disturbance that affects the impurity removal effect. The speed in the cutting stage is reduced to 20-30mm / s to ensure the cutting accuracy of the tool.

[0021] Telescopic electric rod 708: The thrust is 300-500N, which can drive the curved tool 710 to press down smoothly and fit the inner side of the mold; the stroke is 80-120mm, which meets the movement requirements from the initial position to the cutting position inside the mold; the speed is fixed at 15-25mm / s to prevent the tool from colliding with the mold or uneven cutting due to excessive speed.

[0022] The output pressure range of the air pump 715 is set to 0.6-0.8 MPa. This pressure can make the air flow ejected by the air nozzle 712 have sufficient impact force to effectively remove dust, fiber debris and other impurities on the surface of the extrusion die 14; the minimum air flow rate is 120 L / min, ensuring that a stable airflow can be maintained when multiple air nozzles work simultaneously, avoiding incomplete cleaning due to insufficient air volume. The typical cleaning operation time is 30-60 seconds, which can ensure the cleaning effect while not affecting the overall production efficiency.

[0023] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the two sides of the workbench 1 are fixedly connected with the extension platform 2, the top of the extension platform 2 is fixedly connected with the air pump frame 5, the inner side of the air pump frame 5 and the outer side of the air pump machine 715 are fixedly connected, and the bottom end of the fixed frame 701 and the top of the extension platform 2 are fixedly connected, the top of the sliding column 3 is fixedly connected with the top plate 6, and the bottom end of the top plate 6 is fixedly connected with a plurality of auxiliary round rods 10, and a plurality of holes are opened on the extrusion plate 8, and the auxiliary round rods 10 are movably connected between the inside of the holes, and the bottom ends of the auxiliary round rods 10 are fixedly connected with the base 11, and the opposite side of the base 11 is fixedly connected to the two sides of the workbench 1, and the top of the workbench 1 is fixedly connected with the working plate 13, the temperature plate 910 is located above the working plate 13, and the rectangular hole is located below the working plate 13.

[0024] Reference Figure 2 、 Figure 3 、 Figure 4 , Figure 7 and Figure 8, the constant temperature component 9 also includes a constant temperature frame 901, the outer side of the constant temperature frame 901 is fixedly connected to the inner side of the rectangular hole, the inner bottom end of the constant temperature frame 901 is fixedly connected with a symmetrical retaining frame 902, the inner side of the retaining frame 902 is fixedly connected with a heater 903, and the outer side of the heater 903 is fixedly connected with a hot gas separation delivery head 904, the outer side of the hot gas separation delivery head 904 is fixedly connected with a plurality of delivery pipes 905, the top of the delivery pipe 905 is fixedly connected to the bottom end of the heat dissipation head 914 on both sides, the outer side of the delivery pipe 905 is movably connected with a retaining cylinder 907, the outer side of the retaining cylinder 907 is fixedly connected with a mounting frame 906, the bottom end of the mounting frame 906 is fixedly connected to the inner side of the bottom end of the constant temperature frame 901, and the outer side of the hot gas separation delivery head 904 is fixedly connected There are multiple vertical tubes 908, and the top of the vertical tube 908 is fixedly connected to the bottom end of the heat sink 914 located in the middle. The outside of the vertical tube 908 and the delivery tube 905 are fixedly connected with a fixed plate 911. The bottom end of the temperature sensor 912 is fixedly connected to the top of the fixed plate 911. The top of the temperature sensor 912 is fixedly connected with symmetrical detection needles 913. The detection needles 913 are located on both sides of the heat sink 914. The top of the detection needle 913 is in contact with the bottom end of the temperature plate 910. The bottom end of the temperature plate 910 is fixedly connected with multiple external connection tubes 909, and the heat sink 914, the temperature sensor 912 and the detection needle 913 are all located on the inner side of the external connection tube 909. A plurality of through holes are opened on the working plate 13, and the outer side of the external connection tube 909 is fixedly connected to the inner side of the through hole.

[0025] Specifically, before the carbon fiber material is extruded, the heater 903 of the constant temperature component 9 is started, and the heat is diverted through the hot gas separation delivery head 904, transmitted to the heat dissipation head 914 through the delivery pipe 905 and the vertical pipe 908, and then dissipated to the extrusion die 14 by the temperature plate 910 to complete the preheating. During the extrusion process, the temperature sensor 912 monitors the temperature of the temperature plate 910 in real time and feeds back to the control system. The system adjusts the power of the heater 903 and the heat dissipation speed of the heat dissipation head 914 according to the difference between the temperature and the set value to ensure that the mold temperature is constant and the product quality is guaranteed.

[0026] Constant temperature component temperature control parameters Temperature setting: Based on the molding characteristics of carbon fiber materials (such as T700 grade carbon fiber composites), the set temperature of the temperature control system is typically 120-160°C. This temperature range ensures that the material is fully cured and does not deteriorate due to excessive temperature.

[0027] Sensor accuracy: The temperature sensor 912 uses a PT100 platinum resistance sensor with an accuracy of ±0.5°C. It can accurately monitor the temperature changes of the temperature plate 910 and provide reliable data support for temperature control.

[0028] Temperature Control Algorithm: Utilizing a PID (Proportional-Integral-Derivative) control algorithm, the control system quickly calculates the deviation and adjusts the heater power when the temperature sensor detects a temperature deviation from the set point. For example, when the temperature drops 1°C below the set point, the heater power increases by 10%-15%. When the temperature rises 1°C above the set point, the heater power decreases by 10%-15%. Simultaneously, the heat sink 914 accelerates heat dissipation, ensuring temperature fluctuations remain within ±2°C, achieving a stable constant temperature environment.

[0029] (1) Curved tool material The curved tool 710 is made of cemented carbide (such as WC-Co cemented carbide, containing 8%-12% cobalt). Its lower hardness limit is set to HRA88. It has the characteristics of high hardness and high wear resistance. It can effectively cut carbon fiber materials and avoid the problem of tool wear and loss of cutting accuracy during long-term use. The service life can reach more than 5,000 cutting operations.

[0030] (2) Temperature plate and heat sink materials Temperature plate 910: Made of oxygen-free copper with a thermal conductivity of 401W / (m•K), it can quickly and evenly transfer heat, ensuring consistent temperatures in all areas of the extrusion die 14, thus avoiding product molding defects caused by local temperature differences.

[0031] Heat sink 914: Made of 6061 aluminum alloy with a thermal conductivity of 155W / (m•K), it combines good thermal conductivity with lightweight properties, can efficiently transfer heat generated by the heater to the temperature plate, and is easy to install and maintain.

[0032] (3) Heater type and power Heater 903 uses a tubular electric heater with a power of 2000-3000W. It can quickly generate heat to meet the needs of heating the temperature plate to the set temperature. It has high heating efficiency and low energy consumption, and is suitable for the overall design of the constant temperature component. (1) Specific embodiments Taking the extrusion molding of T700-grade carbon fiber composite materials as an example, the complete process and key data are as follows: Cleaning stage: start the air pump 715, output pressure 0.7MPa, air flow 150L / min, the air nozzle 712 cleans the top of the extrusion die 14 for 45s, and the residual impurities on the die surface after cleaning are less than 0.1mg / cm².

[0034] Extrusion stage: The carbon fiber material is placed on the extrusion die. The lower pressing plate 4 drives the extrusion column 12 and the extrusion plate 8 downward, applying a pressure of 5 MPa. Simultaneously, the thermostat is activated and set to 140°C. The PID control algorithm controls the temperature fluctuation range between 139°C and 141°C. The extrusion lasts for 10 minutes, and the material is fully cured.

[0035] Cutting stage: the electric telescopic rod 702 moves at a speed of 25 mm / s, the telescopic electric rod 708 presses down at a speed of 20 mm / s, the arc-shaped cutter 710 cuts along the inner side of the mold, and the size deviation of the product after cutting is ±0.05 mm, which meets the high-precision requirement.

[0036] (II) Comparison of experimental data The mold of the application and the conventional mold without cleaning and constant temperature function were compared in experiments, and the results are shown in the following table: From the data, it can be seen that the application has significant improvement in product quality, size accuracy and surface cleanliness through the synergistic effect of the cleaning assembly and the constant temperature assembly, which fully verifies the effectiveness of the technical scheme.

[0037] (I) Control logic of temperature control system The temperature sensor 912 collects the temperature data of the temperature plate 910 in real time, and transmits the data to the PLC (programmable logic controller) control system through the RS485 communication interface. The control system compares the collected temperature value with the set temperature value, if the temperature is lower than the set value, the PLC output signal increases the power supply voltage of the heater 903, and the heating power is increased, if the temperature is higher than the set value, the PLC output signal reduces the power supply voltage of the heater, and at the same time, the rotating speed of the heat dissipation fan of the heat dissipation head 914 is increased to speed up the heat dissipation. The response time of the whole adjustment process is less than 1s, which ensures that the temperature quickly returns to the set range.

[0038] (II) Electrical connection relationship Temperature sensor and control system: connected by RS485 communication interface, transmission rate is 9600bps, data transmission is stable, anti-interference ability is strong, which can ensure accurate transmission of temperature data.

[0039] Heater and control system: connected by solid-state relay, the control signal output by PLC triggers the on-off of solid-state relay, realizes the adjustment of the power supply of heater, and then controls the heating power, avoids the circuit damage problem caused by directly controlling high-power equipment.

[0040] Electric telescopic rod, telescopic electric rod and control system: pulse signal control is adopted, the PLC outputs pulse signal to the motor driver, and the driver controls the motor to run, realizing the speed and stroke control of the telescopic rod, and the precision can reach 0.01mm.

[0041] The use method of the carbon fiber material extrusion forming mold, using the carbon fiber material extrusion forming mold as described above, comprising the following steps: Step 1: Before extrusion molding of the carbon fiber material, multiple air nozzles 712 on the outside of the arc-shaped air box 711 of the cleaning and cutting assembly 7 clean the top of the extrusion die 14 to remove impurities on the die. The cleaned carbon fiber material is placed on the extrusion die 14, and the lower pressing plate 4 drives the extrusion column 12 and the extrusion plate 8 to move downward, applying pressure to the carbon fiber material to extrude it into shape in the extrusion die 14. Step 2: During this process, the constant temperature component 9 located in the rectangular hole inside the workbench 1 starts to work. The heat sink 914 below the temperature plate 910 and the temperature sensor 912 outside work together to maintain the temperature inside the extrusion die 14 stable, ensuring that the carbon fiber material can be formed in a suitable temperature environment; Step 3: After the carbon fiber material is extruded and formed, the cleaning and cutting assembly 7 operates again. At this time, the arc-shaped tool 710 cuts off the excess carbon fiber material after extrusion and forming, so that the final product reaches the required shape and specifications.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A carbon fiber material extrusion forming die, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a plurality of sliding columns (3), the outer sides of the sliding columns (3) are movably connected to a lower pressure plate (4), and the bottom end of the lower pressure plate (4) is fixedly connected to an extrusion column (12), the top end of the extrusion column (12) is fixedly connected to an extrusion plate (8), an extrusion die (14) is provided below the extrusion plate (8), and symmetrical cleaning and cutting components (7) are provided on both sides of the extrusion die (14), and a rectangular hole is provided inside the workbench (1), and a constant temperature component (9) is provided inside the rectangular hole; The cleaning and cutting assembly (7) includes an arc-shaped tool (710), an arc-shaped air box (711) is provided above the arc-shaped tool (710), and a plurality of air nozzles (712) are provided on the outside of the arc-shaped air box (711), and the air nozzles (712) are all located above the extrusion die (14); The constant temperature component (9) comprises a temperature plate (910), a plurality of heat sinks (914) are fixedly connected below the temperature plate (910), and temperature sensors (912) are provided on the outsides of the heat sinks (914).

2. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The cleaning and cutting assembly (7) further comprises a fixing frame (701), the inner side of which is fixedly connected to an electric telescopic rod (702), a limiting frame (703) is provided at the front end of the electric telescopic rod (702), a circular hole is provided on a side of the limiting frame (703) close to the electric telescopic rod (702), and the electric telescopic rod (702) is movably connected to the inside of the circular hole, and a symmetrical connecting rod (704) is fixedly connected to the inner side of the limiting frame (703).

3. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The front end of the electric telescopic rod (702) is fixedly connected to a sliding member (705), the inner side of the bottom end of the sliding member (705) and the outer side of the connecting rod (704) are movably connected, and the top end of the sliding member (705) is fixedly connected to a connecting frame (706), the front end of the connecting frame (706) is fixedly connected to a connecting member (707), and a telescopic electric rod (708) is provided on the connecting member (707).

4. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The bottom end of the telescopic electric rod (708) is fixedly connected to a base frame (709), which is located below the connecting member (707). The bottom end of the base frame (709) is fixedly connected to the top end of the arc-shaped tool (710), the outer side of the arc-shaped tool (710) is in contact with the inner side of the extrusion die (14), and the front end of the connecting member (707) is fixedly connected to a side of the arc-shaped air box (711) close to the telescopic electric rod (708). The top end of the arc-shaped air box (711) is fixedly connected to an air connection head (713), the top end of the air connection head (713) is fixedly connected to an air supply pipe (714), and the end of the air supply pipe (714) close to the electric telescopic rod (702) is fixedly connected to an air pump (715).

5. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The two sides of the workbench (1) are fixedly connected to the extension platform (2), the top of the extension platform (2) is fixedly connected to the air pump frame (5), the inner side of the air pump frame (5) and the outer side of the air pump machine (715) are fixedly connected, and the bottom end of the fixed frame (701) and the top of the extension platform (2) are fixedly connected, and the top of the sliding column (3) is fixedly connected to the top plate (6).

6. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The bottom end of the top plate (6) is fixedly connected to a plurality of auxiliary round rods (10), a plurality of holes are opened on the extrusion plate (8), the auxiliary round rods (10) are movably connected to the inside of the holes, the bottom ends of the auxiliary round rods (10) are fixedly connected to the base (11), and the opposite side of the base (11) is fixedly connected to the two sides of the workbench (1), the top end of the workbench (1) is fixedly connected to the working plate (13), the temperature plate (910) is located above the working plate (13), and the rectangular hole is located below the working plate (13).

7. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The constant temperature assembly (9) further comprises a constant temperature frame (901), wherein the outer side of the constant temperature frame (901) is fixedly connected to the inner side of the rectangular hole, and the inner bottom end of the constant temperature frame (901) is fixedly connected to a symmetrical retaining frame (902), the inner side of each retaining frame (902) is fixedly connected to a heater (903), and the outer side of each heater (903) is fixedly connected to a hot gas separation conveying head (904), and the outer side of each hot gas separation conveying head (904) is fixedly connected to a plurality of conveying pipes (905), and the top end of each conveying pipe (905) is fixedly connected to the bottom end of each heat dissipation head (914) located on both sides.

8. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The outer sides of the delivery pipes (905) are movably connected to retaining cylinders (907), the outer sides of the retaining cylinders (907) are fixedly connected to mounting brackets (906), the bottom ends of the mounting brackets (906) are fixedly connected to the inner sides of the bottom ends of the constant temperature racks (901), the outer sides of the hot gas separation delivery heads (904) are fixedly connected to a plurality of vertical pipes (908), and the top ends of the vertical pipes (908) are fixedly connected to the bottom ends of the heat dissipation heads (914) located in the middle, the outer sides of the vertical pipes (908) and the delivery pipes (905) are fixedly connected to fixing plates (911), and the bottom ends of the temperature sensors (912) are fixedly connected to the top ends of the fixing plates (911).

9. The carbon fiber material extrusion forming die according to claim 1, characterized in that: The top end of the temperature sensor (912) is fixedly connected to symmetrical detection needles (913), which are located on both sides of the heat dissipation head (914). The top ends of the detection needles (913) are in contact with the bottom end of the temperature plate (910). The bottom end of the temperature plate (910) is fixedly connected to multiple external connection tubes (909), and the heat dissipation head (914), the temperature sensor (912) and the detection needles (913) are all located on the inner side of the external connection tube (909). The working plate (13) is provided with multiple through holes, and the outer side of the external connection tube (909) is fixedly connected to the inner side of the through holes.

10. A method for using a carbon fiber material extrusion molding die, using the carbon fiber material extrusion molding die according to claim 9, characterized in that: The steps include: Step 1: Before the carbon fiber material is extruded and formed, a plurality of air nozzles (712) on the outside of the arc-shaped air box (711) of the cleaning and cutting assembly (7) are used to clean the top of the extrusion die (14) to remove impurities on the die, and the cleaned carbon fiber material is placed on the extrusion die (14). The lower pressing plate (4) drives the extrusion column (12) and the extrusion plate (8) to move downward, applying pressure to the carbon fiber material so that it is extruded and formed in the extrusion die (14); Step 2: During this process, the constant temperature component (9) located in the rectangular hole inside the workbench (1) starts to work, and the heat sink (914) below the temperature plate (910) and the temperature sensor (912) outside work together to maintain the temperature inside the extrusion die (14) stable, ensuring that the carbon fiber material can be formed under a suitable temperature environment; Step 3: After the carbon fiber material is extruded and formed, the cleaning and cutting assembly (7) operates again, and the arc-shaped tool (710) cuts off the excess carbon fiber material after extrusion and forming, so that the final product reaches the required shape and specifications.

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