Rapid heating, forming and cooling equipment for thermoplastic carbon fiber prepreg
By using zero-distance medium frequency electromagnetic heating and nano-copper powder high-temperature coating in thermoplastic carbon fiber prepreg molding equipment, the problems of slow heating speed and low cooling efficiency are solved, rapid heating and cooling are achieved, and production efficiency and equipment are improved. Stability reduces maintenance costs and energy consumption.
Patent Information
- Application Number
- CN202420352692.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-26
AI Technical Summary
The existing thermoplastic carbon fiber prepreg is heated and formed and cooling equipment is slow to heat, resulting in low production efficiency, unstable molding quality, increased wear of equipment, easy rust on cooling channels, and inability to achieve rapid cooling, increasing maintenance costs and energy consumption, limiting Material selection and complex shape forming.
The zero-distance medium frequency electromagnetic heating coil is used for heating, combined with the nano-copper powder high-temperature coating and temperature sensing device, to achieve rapid heating and cooling, avoid grooved operations, and enhance the structural integrity of the equipment and heat dissipation effect.
It has achieved a significant improvement in heating speed, improved production efficiency and molding quality, extended equipment life, reduced energy consumption and maintenance costs, and ensured product consistency and safety.
Smart Images
Figure CN222156268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermoplastic carbon fiber plate processing, in particular to thermoplastic carbon fiber prepreg rapid heating, molding and cooling equipment. Background Art
[0002] PEEK carbon fiber plates are usually heated during processing and extruded under high temperature conditions, and then the extrusion mold is cooled to quickly cool and shape the PEEK carbon fiber plates to avoid warping. After searching, the Chinese patent authorization number CN210850967U discloses a carbon fiber plate forming mold, including an upper mold, a bottom mold and a support plate; the device is convenient for cooling, molding and demolding the formed carbon fiber hollow plate by setting a main cooling water channel in the upper mold and the bottom mold and opening an auxiliary cooling water channel in the support plate. However, when the water cooling system connected to the cooling water channel is first put into operation or started after overhaul, there will be air in the internal volume. If it is not removed in time, there will be bubbles during the operation of the water pump. When there is air in the cooling channel, it will cause the accumulation of bubbles on the inner wall surface of the cooling water channel to form an "air film", thereby reducing the contact area between the cooling water and the inner wall of the cooling channel, thereby reducing the heat exchange effect between the cooling water and the cooling channel, thereby reducing the cooling effect and increasing energy consumption.
[0003] In addition, the traditional heating structure on the market used for PEEK carbon fiber plate molding heating must add a tube with an outer wall of more than 10mm in the hole of the mold, and then make the coil inside the tube, or dig a deep groove in the mold steel, and the coil can only be arranged at a distance of more than 10mm under and around the groove, which leads to lower strength of the mold. In addition, the minimum distance between the existing electromagnetic coil and the heating body is more than 10mm, and it is impossible to achieve zero distance from the heating body, resulting in reduced heating efficiency.
[0004] Existing thermoplastic carbon fiber prepreg rapid heating molding cooling equipment still has the following defects:
[0005] 1. Existing molding equipment has a slow heating speed, wasting a lot of processing time: Low production efficiency: Slow heating speed directly leads to reduced production efficiency. In many manufacturing environments that require continuous production, this may lead to a lot of waiting time, thereby reducing overall output. Increased energy consumption: In order to achieve a slow heating speed, more energy and heat may be required. This not only increases production costs, but is also not conducive to environmental protection. Unstable molding quality: Due to uneven heating or inaccurate temperature control, the quality of molded parts may be unstable. This may manifest as overheating or overcooling in some areas, resulting in a decrease in material properties or thermal stress. Increased equipment wear: Long-term heating may increase the thermal stress inside the equipment and accelerate the wear and aging of certain parts. Limiting material selection: For some temperature-sensitive materials, excessive heating time and inappropriate temperature may affect their performance. This may limit the application of molding equipment on some special materials or composite materials. Difficult to achieve complex shape molding: Slow heating speed may limit the fluidity of the material during the molding process, making it more difficult to produce products with complex shapes. Increased maintenance costs: Due to long-term operation of the equipment and potential overheating problems, more frequent equipment inspections and maintenance may be required, increasing operating costs. Impact on product consistency: Temperature fluctuations and imprecise temperature control may lead to a series of product defects, such as warping, bubbles and color differences. Not conducive to automation: The slow heating process may limit the efficiency of the automation system, increase the need for manual intervention, and thus increase production costs and the possibility of errors. Reduce customer satisfaction: The final product may have performance or appearance defects due to various molding problems, thus affecting customer satisfaction.
[0006] 2. When the heating structure needs to be replaced or added, the mold body needs to be slotted, which is easy to damage the equipment structure: Damage to the structural integrity of the equipment: The slotting operation may cause a certain degree of damage to the structural integrity of the mold body, thereby affecting the stability and service life of the equipment. Increase production costs and time: The slotting operation may require additional working hours and manpower, which undoubtedly increases production costs. At the same time, it may also delay the normal production schedule and reduce overall production efficiency. Reduce equipment performance: Slotting may cause the thermal conductivity of the mold body to decrease, thereby affecting the heating effect and molding quality of the equipment. High technical requirements: The slotting operation requires a certain level of technology. If it is not operated properly, it may cause further damage to the mold body or further decline in equipment performance. Impact on equipment maintenance: The slotting operation may make the maintenance of the equipment more complicated, as more repairs and inspections may be required. Safety hazards: Improper slotting of the mold body may cause equipment failure or even safety accidents.
[0007] 3. Lack of protective measures in the cooling channel, which can easily cause structural rust and mold cracking: Structural rust: Since the moisture in the cooling channel is in contact with the metal structure, long-term exposure to a humid environment will cause corrosion and rust in the structure. This will damage the structural strength and stability of the equipment, thereby affecting production efficiency and product quality. Mold cracking: During rapid heating and cooling, drastic changes in temperature will impose huge thermal stress on the mold, and the lack of protective measures to relieve these stresses may cause the mold to crack. This will cause unnecessary losses to the production process and reduce the service life and production efficiency of the equipment. Increased maintenance costs: If the equipment has problems such as structural rust and mold cracking, the cost of repair and replacement will be very high. Due to the complexity of the equipment and the high manufacturing cost, once damage occurs, the cost of repair and replacement will be very high, seriously affecting the economic benefits of the enterprise.
[0008] 4. Failure to achieve rapid cooling: Extended production cycle: Rapid cooling can significantly shorten the molding cycle. If the equipment cannot achieve rapid cooling, each molding cycle will be extended, reducing production efficiency. Affecting molding quality: In some materials and product shapes, some materials need to be cooled to the specified temperature in a very short time, otherwise it will affect product performance. At the same time, rapid cooling helps to improve product performance and reduce internal stress. If the equipment cannot achieve rapid cooling, it may affect the final performance and appearance of the product. Increased energy consumption: Slower cooling speeds may take longer to cool the material, which may lead to increased energy consumption. Limiting the scope of material use: For some heat-sensitive materials, a rapid cooling process can prevent the material from deforming or degrading. If the equipment cannot achieve rapid cooling, it may limit the range of available materials. Reduced output: Due to reduced production efficiency, the inability to cool quickly may lead to a reduction in overall output. Increased maintenance costs: The inability of the equipment to achieve rapid cooling may mean that some components (such as the cooling system) require more frequent maintenance and replacement, increasing operating costs. Reduced product consistency: Due to inconsistent cooling speeds, there may be differences between multiple products produced in succession, reducing product consistency. Utility Model Content
[0009] The main purpose of the utility model is to provide a thermoplastic carbon fiber prepreg rapid heating molding cooling device, which can effectively solve the problems in the background technology.
[0010] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a thermoplastic carbon fiber prepreg rapid heating molding cooling device, including a lower mold body, a cooling channel with a high-temperature coating for rust prevention and metal cracking prevention, a connector, a water tank, a thermal insulation layer and a zero-distance medium-frequency electromagnetic heating coil, an upper mold body is arranged above the lower mold body, and zero-distance medium-frequency electromagnetic heating coil pipes are arranged inside the upper mold body and the lower mold body, and the zero-distance medium-frequency electromagnetic heating coil pipes are arranged in the internal holes and grooves of the upper mold body and the lower mold body, and the lower mold body is connected to the upper mold body. A cooling channel for preventing rust and metal cracking is arranged inside the mold body. The cooling channels are arranged in a straight line with equal spacing, and the cooling channels have a high-temperature coating for preventing rust and metal cracking in the channels, and both ends are arranged in an open state; the cooling channel is connected to one end of the connecting port, and the other end of the connecting port is connected to one end of the connecting pipe, the other end of the connecting pipe is welded to the connecting head, and the other end of the connecting head is connected to the inside of the water tank, the water tank is arranged on both sides of the lower mold body, and a connecting main water pipe is arranged on one side of the water tank; the connecting main water pipe is connected to a high-pressure water pump.
[0011] Furthermore, the distance between the zero-distance medium-frequency electromagnetic heating coil pipeline arranged inside the lower mold body and the upper mold body and the carbon fiber processing surface is controlled within the range of 1 mm and 0.1 mm.
[0012] Furthermore, a medium-frequency electromagnetic heating coil is arranged inside the zero-distance medium-frequency electromagnetic heating coil pipe, and the medium-frequency electromagnetic heating coil is condensed in the medium-frequency electromagnetic heating coil pipe through multiple heating coils.
[0013] Furthermore, the zero-distance medium-frequency electromagnetic heating coil acts on the lower mold body and the upper mold body through multi-strand condensed electromagnetic heating, and uses the inductance principle to achieve rapid heating and zero-distance heating. The coil is connected to a zero-distance medium-frequency controller.
[0014] Furthermore, the cooling channel port is provided with a temperature sensing device, and a high-temperature coating is provided inside to prevent rust and metal cracking. When the temperature exceeds 400 degrees, the metal does not crack. The connecting pipes and connecting heads are opened to cool the lower mold body and the upper mold body. Each water pipe is directly connected to the flow of high-pressure water to achieve the purpose of direct and rapid cooling.
[0015] Furthermore, the zero-distance medium-frequency electromagnetic heating coil acts on the lower mold body and the upper mold body through multi-strand condensed electromagnetic heating, and uses the inductance principle to achieve rapid heating and zero-distance heating.
[0016] Furthermore, the cooling channel port is provided with a temperature sensing device, and a high-temperature coating is provided inside to prevent rust and metal cracking. When the temperature exceeds 400 degrees, the metal does not crack. The connecting pipes and connecting heads are opened to cool the lower mold body and the upper mold body. Each water pipe is directly connected to the flow of high-pressure water to achieve the purpose of direct and rapid cooling.
[0017] Furthermore, a base body is welded to the bottom of the lower mold body, and the interior of the base body is hollow, and the interior of the base body is filled with a heat-insulating layer.
[0018] Furthermore, the thermal insulation layer is made of glass fiber resin, and holes and grooves are provided on the surface of the thermal insulation layer, and the holes and grooves on the surface of the thermal insulation layer are arranged in a honeycomb shape.
[0019] Compared with the prior art, the utility model has the following advantages:
[0020] 1. Change the original heating method to medium frequency electromagnetic heating coil heating, and use electromagnetic induction to heat the upper and lower molds to 400 degrees within 5 to 7 minutes: Rapid heating: Using medium frequency electromagnetic heating coils for heating, the upper and lower molds can be heated to 400 degrees within 5 to 7 minutes. Compared with traditional heating methods, it is faster and more efficient. High efficiency and energy saving: The medium frequency electromagnetic heating coil has high working efficiency and can convert electrical energy into thermal energy, avoiding the energy loss problem in traditional heating methods, thereby achieving more efficient energy utilization. In addition, electromagnetic heating can be carried out without direct contact, reducing energy loss during heat transfer and reducing production costs. Uniform heating: Since the electromagnetic field can act evenly on the entire heating body, the medium frequency electromagnetic heating coil can achieve a more uniform heating effect, avoiding the problem of uneven temperature gradient that may occur in traditional heating methods, thereby improving the quality and reliability of the product. High-precision control: The medium frequency electromagnetic heating coil can achieve precise heating control, and can adjust parameters such as heating temperature and heating time according to different product requirements to meet different production needs.
[0021] 2. Taking advantage of the properties of the medium-frequency electromagnetic heating coil pipeline and the heating coil that can be wound layer by layer, the power can be adjusted by winding layer by layer in the pipeline to avoid secondary slotting of the structure: Structural simplification: Opening the pipeline of the medium-frequency electromagnetic heating coil in the original mold body can avoid secondary slotting of the structure, thereby simplifying the structural design and manufacturing process of the equipment. This can reduce manufacturing costs, improve production efficiency, and better meet process requirements. Optimize heating effect: By embedding the heating coil directly into the mold body, the layer-by-layer winding property can be achieved, making the heating uniformity higher. The direct contact between the heating coil and the mold body can transfer heat more effectively, improve heating efficiency, and reduce energy loss. Improve heating speed: Due to the close contact between the heating coil and the mold body, heat can be conducted to the high-pressure water pump material more quickly, thereby achieving a faster heating speed. This direct contact method can reduce the thermal conduction impedance that may exist in traditional heating methods and improve heating efficiency. Precise control: Using medium-frequency electromagnetic heating coils for heating can achieve precise control of parameters such as heating temperature and heating time. By rationally designing the structure and current distribution of the heating coil, the heating intensity of different parts can be adjusted to meet different processing requirements.
[0022] 3. Adding a high-temperature coating with nano copper powder inside the cooling channel can effectively prevent structural rust and mold cracking: Prevent structural rust: Nano copper powder has good electrical conductivity and thermal conductivity. Adding a high-temperature coating can effectively block direct contact between moisture and metal structures. This can reduce the erosion and oxidation reaction of moisture on the metal structure, thereby preventing rust and corrosion of the structure. Relieve thermal stress: The high-temperature coating can provide a certain insulation and buffering effect, which can reduce the rate of temperature change during rapid heating and cooling in the cooling channel. This helps to reduce the thermal stress on the mold, reduce the risk of mold cracking, and increase the service life and stability of the equipment. Improve heat dissipation: Nano copper powder has a high thermal conductivity, and adding a high-temperature coating can improve the heat dissipation effect of the cooling channel. This helps to dissipate heat from the equipment faster, improve the overall cooling efficiency, and reduce the temperature gradient during heating and cooling, thereby further reducing the risk of mold cracking.
[0023] 4. Add a temperature sensing device. When the internal temperature exceeds 400 degrees, use the straight high-pressure water flow in each water pipe to quickly reduce the temperature of the mold body to reach the set temperature in 4 to 5 minutes: Improve production efficiency: The direct and rapid cooling method can shorten the cooling time of the product and improve production efficiency. After the heating and molding is completed, the temperature sensing device detects that the internal temperature exceeds the set value, and the straight high-pressure water flow can be started to reduce the waiting time for cooling and improve production efficiency. Reduce the risk of product deformation: High-pressure water pump materials are easily affected by temperature and are prone to deformation at high temperatures. The temperature sensing device detects that the internal temperature exceeds the set value, and promptly starts the straight high-pressure water flow for rapid cooling, which can effectively prevent product deformation and improve product quality and stability. Safe and reliable: The straight high-pressure water flow method can achieve rapid cooling of the high-pressure water pump heating molding equipment, thereby avoiding the potential safety hazards in the traditional natural cooling method and ensuring the safety of the staff. Energy saving and environmental protection: In the traditional natural cooling method, the heating equipment needs to be cooled to room temperature, which consumes a lot of energy. The straight high-pressure water flow method can quickly cool down, save energy, and reduce pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0025] Figure 2 It is a schematic diagram of the structure of the upper mold body and the lower mold body of the utility model;
[0026] Figure 3 This is a schematic diagram of the insulation layer structure of the utility model;
[0027] Figure 4 This is a schematic diagram of the structure of the medium frequency electromagnetic heating coil of the utility model;
[0028] Figure 5 It is a side structural schematic diagram of the utility model.
[0029] Figure 6 High-pressure water pump adapted for the utility model
[0030] In the figure: 1. lower mold body; 2. medium frequency electromagnetic heating coil pipeline; 3. high pressure water pump; 4. upper mold body; 5. cooling channel; 6. connecting port; 7. connecting pipe; 8. connecting head; 9. connecting main water pipe; 10. water tank; 11. bottom body; 12. insulation layer; 13. medium frequency electromagnetic heating coil. DETAILED DESCRIPTION
[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] A person skilled in the art should connect all the electrical components in this case to their corresponding power supplies through wires, and should select a suitable controller according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components complete the electrical connection in the order of working in sequence. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no longer explains the electrical control.
[0035] Example
[0036] See also Figure 1-6 , the utility model provides a technical solution:
[0037] Thermoplastic carbon fiber prepreg rapid heating molding cooling equipment, including a lower mold body 1, a cooling channel 5 with a high-temperature coating for rust prevention and metal cracking prevention, a connector 8, a water tank 10, a thermal insulation layer 12 and a zero-distance medium-frequency electromagnetic heating coil 13, an upper mold body 4 is arranged above the lower mold body 1, and a zero-distance medium-frequency electromagnetic heating coil pipeline 2 is arranged inside the upper mold body 4 and the lower mold body 1, and the zero-distance medium-frequency electromagnetic heating coil pipeline 2 is arranged in the internal hole grooves of the upper mold body 4 and the lower mold body 1, and the lower mold body 1 and the upper mold body 4 are provided with a cooling channel 5 for rust prevention and metal cracking prevention, and the cooling channel 5 is arranged in a straight line with equal spacing, and the cooling channel has a high-temperature coating for rust prevention and metal cracking prevention. The temperature coating layer 5 is set in an open state at both ends; the cooling channel 5 is connected to one end of the connecting port 6, the other end of the connecting port 6 is connected to one end of the connecting pipe 7, the other end of the connecting pipe 7 is welded to the connecting head 8, and the other end of the connecting head 8 is connected to the inside of the water tank 10, the water tank 10 is arranged on both sides of the lower mold body 1, and one side of the water tank 10 is provided with a connecting main water pipe 9; the connecting main water pipe 9 is connected to the high-pressure water pump 3, and the lower mold body 1 and the upper mold body 4 are internally provided with a zero-distance medium-frequency electromagnetic heating coil pipeline 2, and the distance from the carbon fiber processing surface is controlled within the range of 1mm and 0.1mm, and the zero-distance medium-frequency electromagnetic heating coil pipeline 2 is internally provided with a medium-frequency electromagnetic heating coil 13, the medium-frequency electromagnetic The heating coil 13 is condensed through multiple heating coils in the medium frequency electromagnetic heating coil pipe 2. The zero-distance medium frequency electromagnetic heating coil 13 acts on the lower mold body 1 and the upper mold body 4 through multiple condensed electromagnetic heating, and uses the inductance principle to achieve rapid heating and zero-distance heating. The coil is connected to the zero-distance medium frequency controller. The port of the cooling channel 5 is provided with a temperature sensing device, and a high-temperature coating is applied inside to prevent rust and metal cracking. When the temperature exceeds 400 degrees, the metal does not crack. The connecting pipe 7 and the connecting head 8 are opened to cool the lower mold body 1 and the upper mold body 4. Each water pipe is directly connected to the high-pressure water flow to achieve the purpose of direct and rapid cooling. The zero-distance medium frequency electromagnetic heating coil 13 acts on the lower mold body 1 and the upper mold body 4 through multiple condensed electromagnetic The heating action is applied to the lower mold body 1 and the upper mold body 4, and the inductance principle is used to achieve rapid heating and zero-distance heating. The port of the cooling channel 5 is provided with a temperature sensing device, and a high-temperature coating is applied inside to prevent rust and metal cracking. When the temperature exceeds 400 degrees, the metal does not crack. The connecting pipe 7 and the connecting head 8 are opened to cool the lower mold body 1 and the upper mold body 4. Each water pipe is directly connected to high-pressure water flow to achieve the purpose of direct and rapid cooling. A base 11 is welded to the bottom of the lower mold body 1, and the interior of the base 11 is hollow. The interior of the base 11 is filled with an insulation layer 12, and the insulation layer 12 is made of glass fiber resin. Holes and grooves are opened on the surface of the insulation layer 12, and the holes and grooves on the surface of the insulation layer 12 are arranged in a honeycomb shape.
[0038] It should be noted that: an upper mold body is arranged above the lower mold body, and medium-frequency electromagnetic heating coil pipes are arranged inside the upper mold body and the lower mold body. These pipes are arranged in the hole grooves of the upper mold body and the lower mold body for rapid heating and zero-distance heating. A high-pressure water pump is arranged on the top of the lower mold body for processing. Cooling channels are arranged inside the lower mold body and the upper mold body, and these channels are arranged in a straight line with equal spacing, and both ends are open. The cooling channel is connected to the connecting port, and the connecting port is welded to the connecting pipe. The other end of the connecting pipe is connected to the inside of the water tank. The water tank is arranged on both sides of the lower mold body, and one side is connected to the connecting port. Medium-frequency electromagnetic heating coils are arranged inside the medium-frequency electromagnetic heating coil pipe, which are condensed by multiple strands of heating coils. The medium-frequency electromagnetic heating coil acts on the lower mold body and the upper mold body through electromagnetic heating, and realizes rapid heating by using the inductance principle. The port of the cooling channel is provided with a temperature sensing device. When the internal temperature exceeds 400 degrees, the connecting pipe and the connector will be opened to cool the lower mold body and the upper mold body. Each water pipe is directly connected to high-pressure water to achieve direct and rapid cooling. The bottom of the lower mold is welded with a base body, which is hollow inside and filled with an insulation layer. The insulation layer is made of glass fiber resin, with holes and grooves on the surface, and is arranged in a honeycomb shape.
[0039] Step S1: placing a thermoplastic high-pressure water pump prepreg in an upper mold body 4 above a lower mold body 1;
[0040] Step S2: Turn on the power of the medium frequency electromagnetic heating coil 13, so that it can act on the lower mold body 1 and the upper mold body 4 through multi-strand condensed electromagnetic heating. The medium frequency electromagnetic heating coil 13 is located inside the medium frequency electromagnetic heating coil pipe 2. Before operation, it is necessary to prepare the prepreg and put it into the lower mold body 1. Electromagnetic heating acts on the lower mold body 1 and the upper mold body 4, and the inductance principle is used to achieve rapid heating and zero-distance heating. During the heating process, it is necessary to control the heating temperature and time to avoid overheating, which may cause the prepreg to burn or deteriorate. An upper mold body 4 is arranged above the lower mold body 1, and a medium-frequency electromagnetic heating coil 13 is arranged inside the upper mold body 4 and the lower mold body 1. The coil used for heating can be directly set inside the circular hole of the mold, and high-voltage medium-frequency electromagnetic heating is used to make the current in the coil small. It is isolated by a transformer, and the distance between the electromagnetic heating coil and the heating body is zero distance. Compared with the traditional heating structure, it takes 1 to 1 and a half hours to heat to 400 degrees. By setting the coil inside the mold, the zero distance with the mold time is achieved, and it only takes 5 to 7 minutes to heat to 400 degrees. Next, it is necessary to ensure that the medium-frequency electromagnetic heating coil 13 in the zero-distance medium-frequency electromagnetic heating coil 13 pipe is working normally. The medium-frequency electromagnetic heating coil 13 converts electrical energy into thermal energy through the principle of electromagnetic induction. The device is usually condensed from multiple heating coils;
[0041] Step S3: The medium frequency electromagnetic heating coil 13 uses the inductance principle to achieve rapid heating and zero-distance heating. Medium frequency electromagnetic heating uses inductive coupling to convert electrical energy into thermal energy. The electromagnetic heating coil 13 forms a closed electromagnetic loop inside the lower mold body 1 and the upper mold body 4 through the medium frequency electromagnetic heating coil pipe 2. The medium frequency electromagnetic heating coil 13 is connected to a power supply, and an alternating magnetic field is generated after power is turned on. The alternating magnetic field passes through the high-pressure water pump 3 in the lower mold body 1 and the upper mold body 4. As an electromagnetic induction material, the high-pressure water pump 3 will be affected by the alternating magnetic field. When the medium frequency electromagnetic heating coil 13 is energized, the generated alternating magnetic field will induce eddy currents in the lower mold body 1 and the upper mold body 4. These eddy currents will cause the damping effect inside the material and the collision movement between the material molecules, thereby generating heat. Since the medium frequency electromagnetic heating coil 13 is no more than 0.1 cm away from the carbon fiber processing surface, the heat can be directly transferred to the high-pressure water pump prepreg to achieve rapid heating. Since the medium frequency electromagnetic heating coil 13 is located inside the medium frequency electromagnetic heating coil pipe 2 and is in close contact with the lower mold body 1 and the upper mold body 4, heat can be transferred to the lower mold body 1 and the upper mold body 4 at zero distance, realizing zero distance heating. Through heating, the thermoplastic carbon fiber prepreg is quickly heated and formed;
[0042] Step S4: During the heating process, the lower mold body 1 and the upper mold body 4 are cooled. A temperature sensing device is installed in the lower mold body 1 and the upper mold body 4. The temperature sensing device monitors the temperature changes during the heating process through sensors. The temperature sensing device is usually composed of a thermocouple or an infrared thermometer. Temperature monitoring: When the thermoplastic high-pressure water pump prepreg begins to heat, the temperature sensing device begins to monitor the temperature. Once the temperature exceeds the set 400 degrees, the temperature sensing device will send a signal to notify the system that it needs to be cooled. Open the connecting pipe: Once the temperature exceeds 400 degrees, the system will open the connecting pipe 7 and the connector 8, and directly and quickly cool down through the flow of high-pressure water. The high-pressure water flow can be sprayed on the lower mold body 1 and the upper mold body 4 through nozzles, nozzles, etc. to achieve the purpose of rapid cooling. Maintain a suitable temperature: After cooling, the temperature sensing device will continue to monitor the temperature to ensure that the lower mold body 1 and the upper mold body 4 remain within a suitable temperature range to give full play to the processing efficiency and processing quality of the equipment;
[0043] Step S5: After cooling is completed, take out the processed product.
[0044] Those skilled in the art should understand that the various embodiments disclosed above may be subjected to various deformations and modifications without departing from the essence of the utility model. Therefore, the protection scope of the utility model should be defined by the appended claims.
[0045] Working principle: The coil used for heating can be directly set inside the circular hole of the mold, and the current in the coil is small through high-voltage medium-frequency electromagnetic heating. Through transformer isolation, the distance between the electromagnetic heating coil and the heating body is zero, which can heat the mold efficiently. When the cooling water passes through the cooling channel, it will exchange heat with the mold, so that the mold can be cooled quickly. By setting up multiple zero-distance medium-frequency electromagnetic heating coil pipelines, the cohesive electromagnetic heating of multiple layers of medium-frequency electromagnetic heating coils in the pipeline can be used to quickly heat the mold body. This heating method can heat the mold body to more than 400 degrees within 5 to 7 minutes. Compared with traditional heating methods, medium-frequency electromagnetic heating can heat the mold body more quickly and evenly, improving production efficiency. In order to avoid grooving on the original mold body, the coil heating can be installed in the round hole. This not only saves the grooving process, reduces the manufacturing difficulty, but also increases the strength of the mold. At the same time, a cooling system is set at the upper end of the mold body, and the mold body can be quickly cooled by passing water through the cooling channel when the mold body temperature exceeds 400 degrees. This structural design can quickly reduce the temperature of the mold body and reach the set temperature within 4 to 5 minutes. Through rapid cooling, the quality and performance of the mold can be guaranteed while shortening the production cycle. The cooling channel of this structure can effectively control the temperature of the mold to prevent damage or deformation caused by overheating. In summary, by utilizing multi-layer medium-frequency electromagnetic heating coil pipes and cooling systems, rapid heating and cooling of the mold can be achieved. This design not only improves processing efficiency, but also ensures the quality and performance of the mold. At the same time, it saves manufacturing costs and human resources, bringing convenience to the production process.
[0046] It should be noted that not all steps and units in the above-mentioned processes and system structure diagrams are necessary, and some steps or units can be ignored according to actual needs. The execution order of each step is not fixed and can be determined as needed. The device structure described in the above-mentioned embodiments can be a physical structure or a logical structure, that is, some units may be implemented by the same physical entity, or some units may be implemented by multiple physical entities, or may be implemented by some components in multiple independent devices.
[0047] The specific embodiments set forth above describe exemplary embodiments, but do not represent all embodiments that can be implemented or fall within the scope of protection of the claims. The term "exemplary" used throughout this specification means "used as an example, instance, or illustration" and does not mean "preferred" or "having advantages" over other embodiments. For the purpose of providing an understanding of the described technologies, the specific embodiments include specific details. However, these technologies can be implemented without these specific details. In some instances, in order to avoid making the concepts of the described embodiments difficult to understand, well-known structures and devices are shown in block diagram form.
[0048] The above description of the present disclosure is provided to enable any ordinary technician in the field to implement or use the present disclosure. Various modifications to the present disclosure are obvious to ordinary technicians in the field, and the general principles defined in this article can be applied to other variations without departing from the scope of protection of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described in this article, but is consistent with the widest scope consistent with the principles and novel features disclosed in this article.
Claims
1. Rapid heating, molding and cooling equipment for thermoplastic carbon fiber prepreg, characterized by: The invention comprises a lower mold body (1), a cooling channel (5) with a high-temperature coating for preventing rust and metal cracking, a connector (8), a water tank (10), a heat-insulating layer (12), and a zero-distance medium-frequency electromagnetic heating coil (13); an upper mold body (4) is arranged above the lower mold body (1); a zero-distance medium-frequency electromagnetic heating coil pipeline (2) is arranged inside the upper mold body (4) and the lower mold body (1); the zero-distance medium-frequency electromagnetic heating coil pipeline (2) is arranged in a hole groove inside the upper mold body (4) and the lower mold body (1); a cooling channel (5) for preventing rust and metal cracking is arranged inside the lower mold body (1) and the upper mold body (4); ), the cooling channels (5) are arranged in a straight line with equal spacing, and the cooling channels have a high-temperature coating for preventing rust and metal cracking in the channels, and the two ends of (5) are arranged in an open state; the cooling channels (5) are connected to one end of the connecting port (6), the other end of the connecting port (6) is connected to one end of the connecting pipe (7), the other end of the connecting pipe (7) is welded to the connecting head (8), and the other end of the connecting head (8) is connected to the inside of the water tank (10), the water tank (10) is arranged on both sides of the lower mold body (1), and a connecting main water pipe (9) is arranged on one side of the water tank (10); the connecting main water pipe (9) is connected to the high-pressure water pump (3).
2. The thermoplastic carbon fiber prepreg rapid heating molding cooling device according to claim 1, characterized in that: The distance between the zero-distance medium-frequency electromagnetic heating coil pipeline (2) arranged inside the lower mold body (1) and the upper mold body (4) and the carbon fiber processing surface is controlled within the range of 1 mm and 0.1 mm.
3. The thermoplastic carbon fiber prepreg rapid heating molding cooling device according to claim 1, characterized in that: A medium-frequency electromagnetic heating coil (13) is arranged inside the zero-distance medium-frequency electromagnetic heating coil pipe (2). The medium-frequency electromagnetic heating coil (13) is formed by condensing multiple heating coils in the medium-frequency electromagnetic heating coil pipe (2), and the coil is connected to a zero-distance medium-frequency controller.
4. The thermoplastic carbon fiber prepreg rapid heating molding cooling device according to claim 3, characterized in that: The zero-distance medium-frequency electromagnetic heating coil (13) acts on the lower mold body (1) and the upper mold body (4) through multiple strands of condensed electromagnetic heating, and uses the inductance principle to achieve rapid heating and zero-distance heating.
5. The thermoplastic carbon fiber prepreg rapid heating molding cooling device according to claim 1, characterized in that: The cooling channel (5) is provided with a temperature sensing device at the port thereof, and has a high-temperature coating inside thereof to prevent rust and metal cracking. When the temperature exceeds 400 degrees, the metal does not crack. The connecting pipe (7) and the connecting head (8) are opened to cool the lower mold body (1) and the upper mold body (4). Each water pipe is directly connected to high-pressure water flow, thereby achieving the purpose of direct and rapid cooling.
6. The thermoplastic carbon fiber prepreg rapid heating molding cooling device according to claim 1, characterized in that: A base body (11) is welded to the bottom of the lower mold body (1), and the interior of the base body (11) is hollow. The interior of the base body (11) is filled with a heat-insulating layer (12).
7. The thermoplastic carbon fiber prepreg rapid heating molding cooling device according to claim 1, characterized in that: The thermal insulation layer (12) is made of glass fiber resin, and holes and grooves are provided on the surface of the thermal insulation layer (12), and the holes and grooves on the surface of the thermal insulation layer (12) are arranged in a honeycomb shape.