Prepreg curing molding device and method

Abstract

The present invention discloses a prepreg curing and molding device and method, wherein the device includes a box body, an extrusion part is arranged in the box body, and the extrusion part is used to extrude and fix the prepreg in the box body; the box body is arranged above the base, and a power unit and a liquid adding unit are arranged in the base, the output end of the power unit is connected to the first end of the liquid adding unit, and the second end of the liquid adding unit is connected to the box body, and the power unit is used to extrude the liquid adding unit so that the solution in the liquid adding unit enters the box body, and the power unit is used to control the box body to slide along the length direction of the base; the heating unit is connected to the box body, and the heating unit is used to generate heat, and the heat enters the box body to cure the prepreg. In this way, during use, the solution in the box body and the extrusion tube is stirred during the shaking and heating process, which can accelerate the transfer of heat, make the temperature of the solution more uniform, thereby improving the curing efficiency, avoiding the problem of uneven curing caused by uneven temperature, and realizing an efficient curing process.

Description

Technical Field

[0001] The invention relates to the technical field of carbon fiber prepreg production, in particular to a prepreg curing and molding device and method. Background Art

[0002] Carbon fiber prepreg is a composite material made of carbon fiber yarn, epoxy resin, release paper and other materials through processes such as coating, hot pressing, cooling, laminating and winding.

[0003] In the existing carbon fiber prepreg curing technology, a common method is to place the carbon fiber prepreg in a curing device, compress the carbon fiber prepreg, place the carbon fiber prepreg under closed conditions and a nitrogen atmosphere, and use an array microwave generator to preheat and cure the carbon fiber prepreg.

[0004] However, in actual application, this curing method and equipment still have some shortcomings. The existing technology often lacks accurate means for pressure control, and the size and stability of the pressure directly affect the curing effect and final performance of the carbon fiber prepreg. If the pressure is not properly controlled, it may lead to problems such as uneven curing, material deformation or damage, which in turn affects the quality and production efficiency of the product. While pressurizing and curing it, it is inconvenient to control its pressure, which will affect the normal use of the device and method and reduce the convenience of using the device. In addition, the temperature distribution of the carbon fiber prepreg may be uneven during the heating process, thus affecting the curing effect. Summary of the invention

[0005] The invention provides a prepreg curing molding device and method, which solves the technical problem.

[0006] A first aspect of the present invention provides a prepreg curing and molding device, comprising:

[0007] A box body, wherein an extrusion portion is provided in the box body, and the extrusion portion is used to extrude and fix the prepreg in the box body;

[0008] A base, wherein the box is arranged above the base, the box is slidably connected to the base, a power unit and a liquid adding unit are arranged in the base, an output end of the power unit is connected to a first end of the liquid adding unit, and a second end of the liquid adding unit is communicated with the box, the power unit is used to squeeze the liquid adding unit so that the solution in the liquid adding unit enters the box, and the power unit is used to control the box to slide along the length direction of the base;

[0009] A heating part is connected to the box and is used to generate heat. The heat enters the box to cure the prepreg.

[0010] In some embodiments of the present disclosure, the extrusion portion includes a limit plate, a pressure rod and a pressure plate;

[0011] The limit plate is arranged above the box body, the pressure plate is arranged inside the box body, the upper end of the pressure rod is connected to the lower surface of the limit plate, and the lower end of the pressure rod passes through the box body and is connected to the pressure plate;

[0012] At least one hydraulic rod is also arranged between the limit plate and the box body, the upper end of the hydraulic rod is connected to the lower surface of the limit plate, and the lower end of the hydraulic rod is connected to the outer surface of the box body, and the hydraulic rod is used to drive the pressure plate to move along the height direction of the box body.

[0013] In some embodiments of the present disclosure, a pressure relief portion is further provided on the box body;

[0014] The pressure relief part includes a pressure relief pipe, which is arranged above the box body and communicated with the box body. A pressure relief block is inserted into the upper end of the pressure relief pipe. A pressure relief spring is arranged inside the pressure relief pipe, and the top of the pressure relief spring is fixedly connected to the pressure relief block.

[0015] In some embodiments of the present disclosure, the power unit includes a motor, an output end of the motor is connected to a turntable, a side of the turntable away from the motor is rotatably connected to a crankshaft connecting rod, and the other end of the crankshaft connecting rod is connected to the liquid adding unit.

[0016] In some embodiments of the present disclosure, a slide plate is further provided in the base, the other end of the crankshaft connecting rod is connected to a first side of the slide plate, and the second side of the slide plate is connected to the liquid adding portion via a push rod;

[0017] A sliding groove is provided on the base, and the sliding groove extends along the length direction of the base. A movable plate is provided above the base, and the upper surface of the movable plate is connected to the lower surface of the box body. A sliding rod is provided on the lower surface of the movable plate, and the sliding rod passes through the sliding groove and is connected to the upper end of the slide plate. The motor drives the slide plate to move along the length direction of the box body.

[0018] In some embodiments of the present disclosure, a plurality of sliding blocks are further disposed on the lower surface of the movable plate, and the lower ends of the sliding blocks are slidably connected to the upper surface of the base.

[0019] In some embodiments of the present disclosure, the liquid adding part includes a squeeze tube, a first end of the squeeze tube is communicated with the box body, a second end of the squeeze tube passes through the base and is connected to the transverse tube, a piston is slidably provided inside the transverse tube, and a side of the piston away from the squeeze tube is connected to the push rod;

[0020] A nut is arranged at the end of the transverse tube close to the extrusion tube, and a reset elastic member is arranged between the nut and the piston.

[0021] In some embodiments of the present disclosure, the heating unit includes a heating tank, a through hole is provided above the heating tank, a connecting pipe is installed on the top of the heating tank, the connecting pipe is connected to the through hole, the connecting pipe is connected to a box body above, the box body is connected to a transmission pipe above, and the transmission pipe is connected to the box body;

[0022] A tension piece is arranged in the connecting tube, the lower end of the tension piece abuts against the heating tank, the upper end of the tension piece is connected to a sealing block, the outer ring of the sealing block fits against the inner wall of the connecting tube, and the inner diameter of the box body is larger than the diameter of the sealing block.

[0023] In some embodiments of the present disclosure, a box door is provided on the box body, one side of the box door is rotatably connected to the box body, a plug-in block is provided on the box body, a plug-in board is plugged into the plug-in block, a plug-in slot is provided on the box door, the first end of the plug-in board is used to plug into the plug-in slot, the second end of the plug-in board is connected to a pull plate through the plug-in board, a positioning piece is provided on one side of the pull plate close to the plug-in board, one end of the positioning piece is connected to the pull plate, and the other end of the positioning piece is connected to the plug-in block.

[0024] A second aspect of the present invention provides a prepreg curing and molding method, which is applied to the prepreg curing and molding device described in any one of the first aspects above, and the steps include:

[0025] Placing the prepreg in the box, controlling the extrusion unit to move downward, and compressing the prepreg;

[0026] Controlling the heating part to heat so that the heat generated in the heating part enters the box;

[0027] Controlling the power unit to squeeze the solution in the liquid adding unit so that the solution enters the box;

[0028] After the solution enters the box for a preset time, the heating part and the control part are turned off.

[0029] The prepreg curing molding equipment and method provided by the present invention have at least the following advantages:

[0030] The prepreg curing and molding equipment provided by the present invention has an extrusion part that extrude and fix the prepreg in the box, and then connects the heating part with the box, and at the same time, extrude the solution in the extrusion tube through the extrusion tube, so that the solution in the connected box can slide during use, so that the solution in the box and the solution in the extrusion tube are stirred during the shaking and heating process, which can accelerate the transfer of heat and make the temperature of the solution more uniform, thereby improving the heating efficiency, avoiding the problem of uneven curing caused by uneven temperature, and realizing an efficient and uniform curing process. At the same time, it can be adjusted and optimized according to different carbon fiber prepregs and curing requirements, and the parameters such as the pressure of the extrusion part and the temperature of the heating part can be changed to adapt to different production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. For those of ordinary skill in the art, other drawings can be obtained from these drawings without paying creative work.

[0032] Figure 1 is a schematic structural diagram of a prepreg curing and molding device according to an embodiment of the present invention;

[0033] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of D in the middle;

[0034] Figure 3 is a schematic diagram of the internal structure of a prepreg curing and molding device from another angle according to an embodiment of the present invention;

[0035] Figure 4 yes Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0036] Figure 5 yes Figure 3 A schematic diagram of the enlarged structure of B;

[0037] Figure 6 It is a schematic diagram of a partial structural cross-section of a prepreg curing and molding device according to an embodiment of the present invention;

[0038] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of C;

[0039] Figure 8 It is a schematic diagram of the internal structure of a part of the prepreg curing and molding equipment shown in one embodiment of the present invention;

[0040] Fig. 9 The figure is a flow chart of a prepreg curing molding method according to an embodiment of the present invention.

[0041] Reference numerals:

[0042] 1. Base; 101. Sliding slot; 2. Moving plate;

[0043] 3. Box body; 33. Box door; 34. Plug-in block; 35. Plug-in board; 36. Pull plate; 37. Positioning piece;

[0044] 4. Extrusion part; 401. Press rod; 402. Limit plate; 403. Hydraulic rod; 404. Press plate;

[0045] 8. Motor; 9. Crankshaft connecting rod; 10. Slide plate; 11. Slide rod; 12. Extrusion tube; 13. Cross tube; 14. Piston; 15. Push rod; 16. Nut; 17. Reset elastic member; 18. Heating tank; 181. Through hole;

[0046] 19. Connecting pipe; 20. Tension piece; 21. Sealing block; 22. Transmission pipe;

[0047] 23. pressure relief part; 231. pressure relief pipe; 232. pressure relief spring; 233. pressure relief block;

[0048] 26. Support tube; 27. Telescopic rod; 28. Bracket; 29. ​​Roller; 30. Mounting plate; 31. Sliding bar; 32. Sliding block; 38. Turntable; 39. Box body. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0050] Carbon fiber prepreg is a composite material made of carbon fiber yarn, epoxy resin, release paper and other materials through processes such as coating, hot pressing, cooling, laminating and winding.

[0051] In the existing carbon fiber prepreg curing technology, a common method is to place the carbon fiber prepreg in a curing device, compress the carbon fiber prepreg, place the carbon fiber prepreg under closed conditions and a nitrogen atmosphere, and use an array microwave generator to preheat and cure the carbon fiber prepreg.

[0052] However, in actual application, this curing method and equipment still have some shortcomings. The existing technology often lacks accurate means for pressure control, and the size and stability of the pressure directly affect the curing effect and final performance of the carbon fiber prepreg. If the pressure is not properly controlled, it may lead to problems such as uneven curing, material deformation or damage, which in turn affects the quality and production efficiency of the product. While pressurizing and curing it, it is inconvenient to control its pressure, which will affect the normal use of the equipment and method and reduce the convenience of using the equipment. In addition, the temperature distribution of various parts of the carbon fiber prepreg may be uneven during the heating process, thereby affecting the curing effect. Curing under a nitrogen atmosphere requires a large amount of nitrogen resources and may produce nitrogen emissions. Large-scale use will also impose a burden on the environment.

[0053] In order to solve the above problems, an embodiment of the present invention provides a prepreg curing molding device and method, wherein an extrusion part extrude and fix the prepreg in a box, and then connects the heating part with the box, and at the same time, squeezes the solution in the extrusion tube through the extrusion tube, so that the solution in the connected box can slide during use, so that the solution in the box and the solution in the extrusion tube are stirred during the shaking and heating process, which can accelerate the transfer of heat and make the temperature of the solution more uniform, thereby improving the heating efficiency, avoiding the problem of uneven curing caused by uneven temperature, and realizing an efficient and uniform curing process. At the same time, it can be adjusted and optimized according to different carbon fiber prepregs and curing requirements, and the parameters such as the pressure of the extrusion part and the temperature of the heating part can be changed to meet different production requirements.

[0054] The prepreg curing and molding equipment and method provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0055] refer to Figure 1-Figure 8, a prepreg curing and molding device provided by an embodiment of the present invention comprises a box 3, a base 1 and a heating unit. An extrusion unit is provided in the box 3, and the extrusion unit can move along the height direction of the box 3. The extrusion unit is used to extrude and fix the prepreg in the box 3. For example, the extrusion unit is provided on the upper end surface of the box 3. When in use, the prepreg is placed in the box 3 so that the prepreg is located between the extrusion unit and the lower end surface of the box 3, and then the extrusion unit is controlled to move along the height direction of the box 3, and the prepreg is compressed and fixed by the extrusion unit. The box 3 is provided above the base 1, and the box 3 is slidably connected to the base 1. A power unit and a liquid adding unit are provided in the base 1, and the output end of the power unit is connected to the first end of the liquid adding unit, and the second end of the liquid adding unit is connected to the box 3. The power unit is used to extrude the liquid adding unit so that the solution in the liquid adding unit enters the box 3. The power unit is used to control the box 3 to slide along the length direction of the base 1. The heating unit is connected to the box 3, and the heating unit is used to generate heat, and the heat enters the box 3 to cure the prepreg. Exemplarily, when the prepreg is heated and cured, the solvent required for the curing process is introduced into the box 3, and then the heating unit is turned on so that the heat generated by the heating unit enters the box 3, and then the power unit is started, and the power unit can communicate the solution in the extrusion unit with the solution in the box 3. At the same time, the box 3 is slid along the length direction of the base 1, so that the solution in the box 3 can be mixed more evenly, which can accelerate the transfer of heat, make the temperature of the solution more uniform, thereby improving the heating efficiency, and making the prepreg heated more evenly during the heating and curing process. The problem of uneven curing caused by uneven temperature is avoided, thereby achieving an efficient and uniform curing process. At the same time, it can also be adjusted and optimized according to different carbon fiber prepregs and curing requirements, and the parameters such as the pressure of the extrusion unit and the temperature of the heating unit can be changed to adapt to different production requirements.

[0056] In an exemplary embodiment, referring to Figure 1 , Figure 2 and Figure 8The extrusion part includes a limit plate 402, a pressure rod 401 and a pressure plate 404; the limit plate 402 is arranged above the box body 3, the pressure plate 404 is arranged inside the box body 3, the upper end of the pressure rod 401 is connected to the lower surface of the limit plate 402, and the lower end of the pressure rod 401 passes through the box body 3 and is connected to the pressure plate 404; at least one hydraulic rod 4034 is also arranged between the limit plate 402 and the box body 3, the upper end of the hydraulic rod 4034 is connected to the lower surface of the limit plate 402, and the lower end of the hydraulic rod 4034 is connected to the outer surface of the box body 3, and the hydraulic rod 4034 is used to drive the pressure plate 404 to move along the height direction of the box body 3. Exemplarily, there are four hydraulic rods 4034 between the limit plate 402 and the box body 3, and the limit plate 402 is moved by the extension and contraction of the hydraulic rod 4034, and then the pressure rod 401 is driven to move, so that the pressure plate 404 can move along the height direction of the box body 3. Among them, several vents can also be set on the pressing plate 404. During the extrusion process, the gas contained in the prepreg or the gas generated by the extrusion cannot be discharged in time, and these gases may hinder the smooth extrusion, and even cause deformation or damage to the material. The vents can provide a discharge channel for these gases to ensure that the extrusion process can proceed smoothly. In addition, the heat in the box 3 can also be more evenly applied to the carbon fiber prepreg to be cured through the vents. In addition, the hydraulic rod 4034 can provide a power source for the pressing plate 404, and can provide a stable and controllable extrusion force, so that the pressing plate 404 can move accurately along the height direction of the box 3. The hydraulic rod 4034 has a precise telescopic control capability, which can realize the precise adjustment of the position of the pressing plate 404, so as to meet different extrusion requirements. By adjusting the telescopic amount of the hydraulic rod 4034, the precise control of the extrusion force can also be realized, avoiding damage to the prepreg or product quality problems caused by excessive or insufficient extrusion.

[0057] In an exemplary embodiment, referring to Figure 1 , Figure 3 and Figure 6, a pressure relief part 23 is also provided on the box body 3. The pressure relief part 23 includes a pressure relief pipe 231, which is arranged above the box body 3, and the pressure relief pipe 231 is connected to the box body 3. A pressure relief block 233 is inserted at the upper end of the pressure relief pipe 231, and a pressure relief spring 24 is arranged inside the pressure relief pipe 231, and the top of the pressure relief spring 24 is fixedly connected to the pressure relief block 233. Exemplarily, the pressure relief block 233 is arranged in a T-shape, and the pressure relief block 233 is plugged into the top of the pressure relief pipe 231. During use, the heating part is used for heating, and after the heat is transferred to the box body 3, when the internal pressure of the box body 3 increases, the pressure will lift the pressure relief block 233, so that the pressure relief block 233 is separated from the top of the pressure relief pipe 231, so as to achieve pressure relief. When the pressure in the box body 3 reaches a normal value, the pressure relief spring 24 will pull part of the structure of the pressure relief block 233 back into the pressure relief pipe 231 to ensure that the box body 3 is in a sealed state. In this way, the safety protection of the equipment is achieved by setting the pressure relief part 23 to avoid damage to the equipment due to excessive pressure inside the equipment during use. By raising and lowering the pressure relief block 233, the pressure inside the box 3 can be effectively controlled to ensure that the heating and curing process is carried out under a stable pressure environment. The pressure relief process helps to adjust the temperature inside the box 3 to prevent the local temperature from being too high or too low due to excessive pressure. The stable pressure environment helps to improve the quality of the prepreg product and the reliability of the process.

[0058] In an exemplary embodiment, referring to Figure 1 and Figure 3 The power unit includes a motor 8, the output end of the motor 8 is connected to a turntable 38, the side of the turntable 38 away from the motor 8 is rotatably connected to a crankshaft connecting rod 9, and the other end of the crankshaft connecting rod 9 is connected to the liquid adding unit. For example, when the motor 8 is working, it will drive the turntable 38 to rotate, and the rotation of the turntable 38 will drive the crankshaft connecting rod 9 to move back and forth along the length direction of the base 1, thereby repeatedly squeezing the solution in the liquid adding unit. The crankshaft connecting rod 9 can convert the rotational motion of the turntable 38 into a linear reciprocating motion. Due to the design of the crankshaft connecting rod 9 mechanism, the solution in the liquid adding unit can be evenly mixed with the solution in the box 3, ensuring that the prepreg is evenly heated during the heating and curing process, thereby improving the quality of the prepreg product.

[0059] In an exemplary embodiment, referring to Figure 1 , Figure 3 , Figure 4 and Figure 6A slide plate 10 is also provided in the base 1, the other end of the crankshaft connecting rod 9 is connected to the first side of the slide plate 10, and the second side of the slide plate 10 is connected to the liquid adding part through the push rod 15; a sliding groove is provided on the base 1, and the sliding groove is extended along the length direction of the base 1. A movable plate is provided above the base 1, and the upper surface of the movable plate is connected to the lower surface of the box 3. A sliding rod 11 is provided on the lower surface of the movable plate, and the sliding rod 11 passes through the sliding groove and is connected to the upper end of the slide plate 10. The motor 8 drives the slide plate 10 to move along the length direction of the box 3. For example, referring to Figure 3 Two parallel sliding grooves are arranged on the upper surface of the base 1, and the sliding grooves extend along the length direction of the box body 3. A moving plate is arranged between the box body 3 and the base 1, and the box body 3 is fixedly mounted on the moving plate. A sliding rod 11 adapted to the sliding groove is connected to the lower surface of the moving plate, and the sliding rod 11 passes through the sliding groove and is fixedly connected to the slide plate 10. When the motor 8 is working, it will drive the turntable 38 to rotate, and the rotation of the turntable 38 will drive the crankshaft connecting rod 9 to move back and forth along the length direction of the base 1. The crankshaft connecting rod 9 can convert the rotational motion of the turntable 38 into a linear reciprocating motion, so that the box body 3 can rock back and forth along the length direction of the base 1. In this way, the operation of the motor 8 can shake the box 3 while squeezing the solution in the squeezing tube 12, so that the solution in the connected box 3 and the solution in the squeezing tube 12 are stirred during the shaking and heating process, which can accelerate the heat transfer and make the temperature of the solution more uniform, thereby improving the heating efficiency and avoiding the problem of uneven curing caused by uneven temperature, thereby achieving an efficient and uniform curing process.

[0060] In addition, a slide bar 31 is fixedly installed on the inner bottom wall of the cavity of the base 1, and a slide groove adapted to the slide bar 31 is provided on the lower surface of the skateboard 10, and the inner wall of the slide groove is slidably connected to the outer surface of the slide bar 31. By setting the slide bar 31, the adaptive design of the slide bar 31 and the slide groove enables the skateboard 10 to slide stably in the cavity of the base 1, and the slide bar 31 provides a clear sliding track for the skateboard 10, ensuring the stability and directionality of the skateboard 10 during movement. At the same time, the close fit between the slide bar 31 and the slide groove reduces the shaking and deviation of the skateboard 10 during the sliding process, making the sliding more smooth and stable.

[0061] In an exemplary embodiment, referring to Figure 3 and Figure 4, a plurality of sliding blocks 32 are also provided on the lower surface of the moving plate, and the lower ends of the sliding blocks 32 are slidably connected to the upper surface of the base 1. For example, a sliding block 32 is provided at each of the four top corners of the lower surface of the moving plate, and the lower ends of the sliding blocks 32 are slidably connected to the upper surface of the base 1. In this way, the plurality of sliding blocks 32 form a stable support point on the lower surface of the moving plate, which can ensure the stability of the moving plate in the horizontal direction, and help prevent the moving plate from tilting or shaking when subjected to external force, thereby improving the overall stability of the device.

[0062] In an exemplary embodiment, referring to Figure 1 , Figure 3 and Figure 5 , the liquid adding part includes an extrusion tube 12, a first end of the extrusion tube 12 is connected to the box body 3, a second end of the extrusion tube 12 passes through the base 1 and is connected to the cross tube 13, a piston 14 is slidably arranged inside the cross tube 13, and the side of the piston 14 away from the extrusion tube 12 is connected to the push rod 15; a nut 16 is arranged at the end of the cross tube 13 close to the extrusion tube 12, and a reset elastic member 17 is arranged between the nut 16 and the piston 14. It should be noted that the reset elastic member 17 includes a reset spring. The setting of the nut 16 provides a limiting effect during the movement of the piston 14 to prevent the piston 14 from excessive movement or separation from the cross tube 13. At the same time, the reset elastic member 17 (such as a spring) can help the piston 14 to quickly return to its initial position after being acted upon by an external force, thereby ensuring the controllability of the movement of the piston 14. By way of example, referring to Figure 3 , the transverse tube 13 is arranged in the base 1, the upper end of the extrusion tube 12 is connected with the box body 3, and the lower end of the extrusion tube 12 passes through the base 1 and is connected with the transverse tube 13, wherein the extrusion tube 12 is a telescopic hose. The end of the crankshaft connecting rod 9 is connected with the right side of the slide plate 10, and the left side of the slide plate 10 is connected with the piston 14 in the extrusion tube 12 through the push rod 15. When the motor 8 is running, the motor 8 will drive the turntable 38 to rotate, and the rotation of the turntable 38 will drive the crankshaft connecting rod 9 to move back and forth along the length direction of the base 1. The crankshaft connecting rod 9 can convert the rotational motion of the turntable 38 into a linear reciprocating motion, so that the piston 14 can move back and forth in the transverse tube 13, thereby making the solution in the extrusion tube 12 and the solution in the box body 3 mixed evenly. In this way, the operation of the motor 8 can shake the box 3 while squeezing the solution in the squeezing tube 12, so that the solution in the connected box 3 and the solution in the squeezing tube 12 are stirred during the shaking and heating process, which can accelerate the heat transfer and make the temperature of the solution more uniform, thereby improving the heating efficiency and avoiding the problem of uneven curing caused by uneven temperature, thereby achieving an efficient and uniform curing process.

[0063] In an exemplary embodiment, referring to Figure 1 , Figure 6 and Figure 7The heating part includes a heating pot 18, and a through hole 181 is arranged above the heating pot 18, wherein a heating block or a heating wire may be arranged inside the heating pot 18, or microwave heating may be adopted to generate heat inside the heating pot 18. A connecting pipe 19 is installed on the top of the heating pot 18, and the connecting pipe 19 is connected to the through hole 181, and the connecting pipe 19 is connected to the box body 39 above, and the box body 39 is connected to the transmission pipe 22 above, and the transmission pipe 22 is connected to the box body 3; a tension member 20 is arranged inside the connecting pipe 19, wherein the tension member 20 includes a tension spring, and the lower end of the tension member 20 abuts against the heating pot 18, and the upper end of the tension member 20 is connected to a sealing block 21, and the outer ring of the sealing block 21 is in contact with the inner wall of the connecting pipe 19, and the inner diameter of the box body 39 is larger than the diameter of the sealing block 21. Exemplarily, the heating tank 18 is also fixedly mounted on the movable plate. When heat is generated in the heating tank 18, the pressure in the heating tank 18 increases, and the pressure lifts the sealing block 21 into the interior of the box body 39, and then the heating tank 18 is connected to the transmission pipe 22, which is convenient for subsequent pressure control and improves the convenience of use of the device. When heating is not required, the tension member 20 pulls the sealing block 21 back into the connecting pipe 19 to keep the pressure in the box body 3 stable. Under the action of the tension member 20 (such as a tension spring), the sealing block 21 can maintain the sealing state of the connecting pipe 19 when not heated to prevent leakage of the medium. When the pressure in the heating tank 18 increases, the sealing block 21 is lifted up and enters the interior of the box body 39, realizing the connection between the heating tank 18 and the transmission pipe 22, ensuring that the prepreg is heated and cured more evenly and stably.

[0064] In an exemplary embodiment, referring to Figure 1 and Figure 2 The box body 3 is provided with a box door 33, one side of the box door 33 is rotatably connected to the box body 3, a plug-in block 34 is provided on the box body 3, a plug-in board 35 is plugged into the plug-in block 34, a plug-in slot is provided on the box door 33, a first end of the plug-in board 35 is used to plug into the plug-in slot, a second end of the plug-in board 35 passes through the plug-in board 35 and is connected to a pull plate 36, a positioning member 37 is provided on the side of the pull plate 36 close to the plug-in board 35, wherein the positioning member 37 includes a tension spring, one end of the positioning member 37 is connected to the pull plate 36, and the other end of the positioning member 37 is connected to the plug-in block 34. For example, referring to Figure 1The right side of the door 33 is hinged to the box body 3 through a hinge. When in use, the plug-in board 35 is inserted into the plug-in slot, and then the plug-in board 35 is positioned and fixed by a positioning member 37 (such as a tension spring). When the door 33 needs to be opened, the pull plate 36 is pulled so that the positioning member 37 pulls the plug-in board 35 out of the plug-in slot, thereby opening the door 33. The user can release the fixation of the plug-in board 35 and the plug-in slot by simply pulling the pull plate 36 without using a key or other tools, making it extremely convenient to open the door 33. The tension spring, as a positioning member 37, can provide continuous pulling force after the plug-in board 35 is inserted, ensuring that the plug-in board 35 remains firmly in the plug-in slot, thereby enhancing the safety of the box body 3.

[0065] In another embodiment, referring to Figure 1 , Figure 6 and Figure 8 , a support tube 26 is fixedly installed at the four corners of the lower surface of the base 1, a telescopic rod 27 is fixedly installed inside the support tube 26, a bracket 28 is fixedly installed at the bottom of the telescopic rod 27, a roller 29 is rotatably connected in the bracket 28 through a rotating shaft, and a mounting plate 30 is fixedly installed at the bottom of the support tube 26 and is vertically arranged with the side wall of the support tube 26. The mounting plate 30 is provided with a mounting hole, which is an oblong hole, and the lower surface of the mounting plate 30 is provided with anti-slip grooves. The telescopic rod 27 can adjust the height of the base 1 according to actual needs, which increases the flexibility of use. After adjusting to an appropriate height, the telescopic rod 27 can provide stable support to ensure that the base 1 and the box 3 remain in a stable state. A roller 29 is arranged at the lower end of the telescopic rod 27, so that the base 1 can be easily moved on the ground, which is convenient for carrying and repositioning. In addition, when the base 1 needs to be fixed at a certain position, the base 1 can be fixed to the ground through the oblong hole on the mounting plate 30 and additional fixing devices (such as bolts, pins, etc.) to prevent sliding or displacement.

[0066] When a prepreg curing and molding device of the present invention is in use, the plug-in plate 35 on the pulling plate 36 is pulled out, so that the plug-in plate 35 is separated from one side of the box door 33, and then the box door 33 is opened to place the carbon fiber prepreg in the box body 3, and the box door 33 is closed, so that the plug-in plate 35 is plugged into the plug-in slot on one side of the box door 33, and the positioning member 37 resets the plug-in plate 35 on the pulling plate 36 so that the plug-in plate 35 is positioned to the box door 33, and then the hydraulic rod 4034 is controlled to work, and then the hydraulic rod 4034 is extended to drive the pressing plate 404 to move downward, so as to compress the carbon fiber prepreg through the pressing plate 404, and then the heating tank 18 is controlled to heat. When the heat pressure generated increases, the pressure lifts the sealing block 21 into the interior of the box body 39, and then the heating tank 18 is connected with the transmission pipe 22, so as to facilitate the subsequent control of the pressure. When the internal pressure increases, the pressure will lift the pressure relief block 233 in the pressure relief pipe 231, so that the pressure relief block 233 is separated from the top of the pressure relief pipe 231, thereby realizing pressure relief and achieving the effect of protecting the equipment. Then the motor 8 is controlled to work. When the motor 8 works, it drives the crankshaft connecting rod 9 on the turntable 38 to move, so that the slide bar 11 and the push rod 15 on the slide plate 10 move, so that the push rod 15 squeezes the piston 14 during the shaking process of the shift plate 2, and then the piston 14 squeezes the solution in the squeeze tube 12. Since the squeeze tube 12 is connected to the box body 3, the solution in the squeeze tube 12 will shake with the movement of the piston 14, thereby accelerating the heat exchange and heating of the medium inside the box body 3. After the two solutions are mixed for 15 minutes, the equipment is controlled to work, and then all pipelines are closed and let stand for half an hour.

[0067] Another embodiment of the present invention further provides a prepreg curing and molding method, which is applied to the prepreg curing and molding device described in any one of the above embodiments, referring to Fig. 9 , the steps include:

[0068] Step S1. Place the prepreg in a box, control the extrusion unit to move downward, and compress the prepreg.

[0069] For example, the plug-in board 35 on the pull plate 36 is pulled out to separate the plug-in board 35 from one side of the box door 33, and then the box door 33 is opened to place the carbon fiber prepreg in the box body 3, and the box door 33 is closed to plug the plug-in board 35 into the plug-in slot on one side of the box door 33, and the positioning member 37 resets the plug-in board 35 on the pull plate 36 to position the plug-in board 35 to the box door 33, and then the hydraulic rod 4034 is controlled to work, and then the hydraulic rod 4034 is extended to drive the pressing plate 404 to move downward, so as to compress the carbon fiber prepreg through the pressing plate 404. By precisely controlling the compression process, the curing effect and final performance of the carbon fiber prepreg are ensured.

[0070] Step S2: Control the heating part to heat so that the heat generated in the heating part enters the box.

[0071] Exemplarily, when the heating of the heating tank 18 is controlled and the heat pressure generated increases, the pressure will lift the sealing block 21 into the interior of the box body 39, and then the heating tank 18 will be connected with the transmission pipe 22, so as to facilitate the subsequent control of the pressure. When the internal pressure of the box body 3 increases, the pressure will lift the pressure relief block 233 in the pressure relief pipe 231, so that the pressure relief block 233 is separated from the top of the pressure relief pipe 231, thereby realizing pressure relief and achieving the effect of protecting the equipment.

[0072] Step S3: Control the power unit to squeeze the solution in the liquid adding unit so that the solution enters the box.

[0073] Exemplarily, the motor 8 is controlled to work, and when the motor 8 is working, it drives the crankshaft connecting rod 9 on the turntable 38 to move, so that the slide bar 11 and the push rod 15 on the slide plate 10 move, so that when the shift plate 2 shakes, the push rod 15 squeezes the piston 14, and then the piston 14 squeezes the solution in the squeeze tube 12. Since the squeeze tube 12 is connected to the box body 3, the solution in the squeeze tube 12 will shake with the movement of the piston 14, thereby accelerating the heat exchange and heating of the medium inside the box body 3.

[0074] Step S4: After the solution enters the box for a preset time, the heating part and the control part are turned off.

[0075] Exemplarily, after the extrusion tube 12 is mixed with the solution in the box 3 for 15 minutes, the control device is operated, and then the heating tank 18 and the motor 8 are closed and left to stand for half an hour.

[0076] In the prepreg curing and molding method described in this embodiment, the extrusion part extrude and fix the prepreg in the box 3, and then the heating part is connected to the box 3, and at the same time, the solution in the extrusion tube 12 is squeezed through the extrusion tube 12, so that the solution in the connected box 3 can slide during use, so that the solution in the box 3 and the solution in the extrusion tube 12 are stirred during the shaking and heating process, which can accelerate the transfer of heat and make the temperature of the solution more uniform, thereby improving the heating efficiency, avoiding the problem of uneven curing caused by uneven temperature, and realizing an efficient and uniform curing process. At the same time, it can be adjusted and optimized according to different carbon fiber prepregs and curing requirements, and the parameters such as the pressure of the extrusion part and the temperature of the heating part can be changed to meet different production requirements.

[0077] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0078] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prepreg curing molding device, characterized in that: include: A box body, wherein an extrusion portion is provided in the box body, and the extrusion portion is used to extrude and fix the prepreg in the box body; A base, wherein the box is arranged above the base, the box is slidably connected to the base, a power unit and a liquid adding unit are arranged in the base, an output end of the power unit is connected to a first end of the liquid adding unit, and a second end of the liquid adding unit is communicated with the box, the power unit is used to squeeze the liquid adding unit so that the solution in the liquid adding unit enters the box, and the power unit is used to control the box to slide along the length direction of the base; A heating part is connected to the box and is used to generate heat. The heat enters the box to cure the prepreg.

2. The prepreg curing molding equipment according to claim 1, characterized in that: The extrusion part includes a limiting plate, a pressing rod and a pressing plate; The limit plate is arranged above the box body, the pressure plate is arranged inside the box body, the upper end of the pressure rod is connected to the lower surface of the limit plate, and the lower end of the pressure rod passes through the box body and is connected to the pressure plate; At least one hydraulic rod is also arranged between the limit plate and the box body, the upper end of the hydraulic rod is connected to the lower surface of the limit plate, and the lower end of the hydraulic rod is connected to the outer surface of the box body, and the hydraulic rod is used to drive the pressure plate to move along the height direction of the box body.

3. The prepreg curing molding equipment according to claim 2, characterized in that: The box body is also provided with a pressure relief portion; The pressure relief part includes a pressure relief pipe, which is arranged above the box body and communicated with the box body. A pressure relief block is inserted into the upper end of the pressure relief pipe. A pressure relief spring is arranged inside the pressure relief pipe, and the top of the pressure relief spring is fixedly connected to the pressure relief block.

4. The prepreg curing molding equipment according to claim 1, characterized in that: The power unit comprises a motor, an output end of the motor is connected to a turntable, a side of the turntable away from the motor is rotatably connected to a crankshaft connecting rod, and the other end of the crankshaft connecting rod is connected to the liquid adding unit.

5. The prepreg curing molding equipment according to claim 4, characterized in that: A slide plate is also provided in the base, the other end of the crankshaft connecting rod is connected to a first side of the slide plate, and the second side of the slide plate is connected to the liquid adding part via a push rod; A sliding groove is provided on the base, and the sliding groove extends along the length direction of the base. A movable plate is provided above the base, and the upper surface of the movable plate is connected to the lower surface of the box body. A sliding rod is provided on the lower surface of the movable plate, and the sliding rod passes through the sliding groove and is connected to the upper end of the slide plate. The motor drives the slide plate to move along the length direction of the box body.

6. The prepreg curing molding equipment according to claim 5, characterized in that: A plurality of sliding blocks are also arranged on the lower surface of the movable plate, and the lower ends of the sliding blocks are slidably connected to the upper surface of the base.

7. The prepreg curing molding equipment according to claim 5, characterized in that: The liquid adding part comprises a squeeze tube, a first end of the squeeze tube is communicated with the box body, a second end of the squeeze tube passes through the base and is connected to the transverse tube, a piston is slidably arranged inside the transverse tube, and a side of the piston away from the squeeze tube is connected to the push rod; A nut is arranged at the end of the transverse tube close to the extrusion tube, and a reset elastic member is arranged between the nut and the piston.

8. The prepreg curing molding equipment according to claim 1, characterized in that: The heating part comprises a heating tank, a through hole is provided above the heating tank, a connecting pipe is installed on the top of the heating tank, the connecting pipe is connected with the through hole, the connecting pipe is connected with a box body above, the box body is connected with a transmission pipe above, and the transmission pipe is connected with the box body; A tension piece is arranged in the connecting tube, the lower end of the tension piece abuts against the heating tank, the upper end of the tension piece is connected to a sealing block, the outer ring of the sealing block fits against the inner wall of the connecting tube, and the inner diameter of the box body is larger than the diameter of the sealing block.

9. The prepreg curing molding equipment according to claim 1, characterized in that: The box body is provided with a box door, one side of which is rotatably connected to the box body, the box body is provided with a plug-in block, a plug-in board is plugged into the plug-in block, a plug-in slot is provided on the box door, a first end of the plug-in board is used to plug into the plug-in slot, a second end of the plug-in board passes through the plug-in board and is connected with a pull plate, a positioning piece is provided on a side of the pull plate close to the plug-in board, one end of the positioning piece is connected to the pull plate, and the other end of the positioning piece is connected to the plug-in block.

10. A prepreg curing molding method, characterized in that: The prepreg curing molding device applied to any one of claims 1 to 9 above comprises the following steps: Placing the prepreg in the box, controlling the extrusion unit to move downward, and compressing the prepreg; Controlling the heating part to heat so that the heat generated in the heating part enters the box; Controlling the power unit to squeeze the solution in the liquid adding unit so that the solution enters the box; After the solution enters the box for a preset time, the heating part and the control part are turned off.

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