Pressure applying device of dielectric sensor in composite material bag pressing and curing process
By designing a pressure device for a dielectric sensor during the composite material bag pressure curing process, the research challenges of monitoring ionic viscosity and the influence of applied pressure in the early stage of curing were solved, and effective acquisition of ionic viscosity parameters and monitoring of sensor signals were achieved.
Patent Information
- Application Number
- CN202520026672.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-07
AI Technical Summary
During the bag pressure curing process of composite materials, existing technologies have difficulty in effectively monitoring ionic viscosity in the early stage of curing and studying the effect of applied pressure on ionic viscosity, especially avoiding the problem of electrode short circuit caused by contact between dielectric sensor and carbon fiber.
A pressure application device for a dielectric sensor in a composite material bag-pressing curing process was designed, including a stage, a support rod, a mounting plate, a pressure plate, a pressure head, a main shaft, a pressure application component, and a limiting component. The pressure application component drives the main shaft to move up and down, and the pressure head applies pressure to the dielectric sensor to promote the immersion of the matrix resin into the electrode gap. The limiting component controls the movement stroke.
This technology enables the effective monitoring of ionic viscosity parameters during the early stages of curing, while also facilitating the study of the effect of applied pressure on ionic viscosity, ensuring resin flowability between sensor electrodes and effective signal monitoring by the sensor.
Smart Images
Figure CN223735258U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the online monitoring technical field of composite material curing process especially relates to a kind of pressure exerting device of composite material bag pressure curing process dielectric sensor. BACKGROUND
[0002] The ion viscosity monitoring of composite material bag pressure curing process can verify, guide and optimize the curing process. To monitor ion viscosity, the electrode side of the dielectric sensor needs to be attached to the composite material, and the matrix resin needs to be immersed in the electrode gap of the sensor during the curing process. The immersion of the matrix resin requires the composite material to reach a certain temperature, which softens the resin and increases its fluidity. For different materials, the softening temperature is different, which will affect the ion viscosity monitoring at the initial stage of composite material curing. For the curing monitoring of carbon fiber composite material, to prevent the dielectric sensor from contacting the carbon fiber and causing electrode short circuit, a layer of porous isolation film is added to the surface of the sensor electrode. At this time, the negative pressure of the sealed bag is not enough to make the resin flow into the electrode gap of the sensor at the initial stage of curing. At the same time, external pressure is also an important factor affecting ion viscosity monitoring. Therefore, how to obtain the effective parameters of ion viscosity at the initial stage of curing without losing, and how to facilitate the study of the effect of external pressure on ion viscosity are the technical problems that need to be solved at present. SUMMARY
[0003] The utility model aims at providing a kind of pressure exerting device of composite material bag pressure curing process dielectric sensor, to guarantee the acquisition of the effective parameters of ion viscosity at the initial stage of curing, and facilitate the study of the effect of external pressure on ion viscosity.
[0004] To achieve the above-mentioned purpose, the technical scheme adopted is as follows:
[0005] A kind of pressure exerting device of composite material bag pressure curing process dielectric sensor, including support table, support, mounting plate, pressure plate, pressure head, main shaft, pressure exerting component and limit component;Wherein, the recess is provided on the support table, the pressure plate is arranged in the recess, the support is fixed to the upper end of the support table, the support is fixedly connected to the mounting plate, the mounting plate is provided with mounting groove, one through hole is arranged at the upper and lower ends of the mounting groove respectively, the pressure exerting component is installed on the mounting plate, the main shaft is movably arranged on the mounting plate through the through hole arranged at the upper and lower ends of the mounting groove, the pressure exerting component is used to drive the main shaft to move up and down, the limit component is arranged on the outside of the main shaft, the limit component is used to limit the travel of the main shaft, the lower end of the main shaft is connected to the pressure head, and the pressure head is arranged directly above the pressure plate.
[0006] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the pressing assembly comprises a rotating rod, a pressing plate, a rope and a counterweight; the rotating rod is rotatably installed on the mounting plate; the pressing plate is arranged at the lower end of the rotating rod and above the main shaft; one end of the rope is connected to the rotating rod, and the other end of the rope is connected to the counterweight.
[0007] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the counterweight comprises a weight disc and at least one weight, and the weight disc is fixedly connected to the rope and used for placing the weight.
[0008] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the rotating rod is a telescopic rod.
[0009] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the upper end of the mounting plate is provided with a rotating shaft seat, the rotating shaft seat is provided with a rotatable rotating shaft, and one end of the rotating rod is fixedly connected to the rotating shaft.
[0010] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, one side of the groove is provided with a wire outlet hole.
[0011] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the limiting assembly comprises a spring and a spring limiting disc; the spring limiting disc is arranged outside the main shaft, the spring is installed on the spring limiting disc, one end of the spring is connected to the bottom of the mounting groove, and the spring limiting disc and the spring are located in the mounting groove.
[0012] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the size of the spring limiting disc is greater than the size of the through hole.
[0013] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the support rod is integrally connected with the mounting plate.
[0014] Preferably, in the pressing device of the dielectric sensor of the composite material bag press curing process, the cross-sectional size of the pressure head is consistent with that of the pressure receiving plate.
[0015] The utility model discloses the beneficial effect is:
[0016] The utility model discloses can press into the composite material matrix resin gap between sensor electrode when just starting to heat, has guaranteed the monitoring of the effective parameter of ion viscosity in the initial curing, can be used for the influence research of the additional pressure to ion viscosity simultaneously. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A perspective view of a pressure applying device for a composite material bag pressure curing process dielectric sensor is shown according to an embodiment of the utility model.
[0018] Figure 2 A use state schematic diagram of a pressure applying device for a composite material bag pressure curing process dielectric sensor is shown according to an embodiment of the utility model.
[0019] Reference signs:
[0020] 1, stage;2, support pole;3, mounting plate;4, pressure plate;5, pressure head;6, main shaft;7, pressure applying assembly;7-1, rotating rod;7-2, lower pressing plate;7-3, rope;7-4, counterweight;7-41, weight disc;7-42, weight;8, limiting assembly;8-1, spring limiting disc;8-2, spring;9, groove;10, mounting groove;11, rotating shaft seat;12, wire outlet hole;13, sealing bag. DETAILED DESCRIPTION
[0021] The embodiments of the utility model will be described below through specific concrete examples, and the person skilled in the art can easily understand other advantages and effects of the utility model from the contents disclosed in the specification. The utility model can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.
[0022] The specific embodiments of the utility model will be described in further detail below in combination with the drawings and embodiments.
[0023] The utility model embodiment provides a kind of pressure applying device for composite material bag pressure curing process dielectric sensor, such as Figure 1As shown, the pressure device of the dielectric sensor for the composite material bag-pressing curing process includes a stage 1, a support rod 2, a mounting plate 3, a pressure plate 4, a pressure head 5, a main shaft 6, a pressure component 7, and a limiting component 8. The stage 1 has a groove 9, the pressure plate 4 is located within the groove 9, the support rod 2 is fixed to the upper end of the stage 1, and the support rod 2 is fixedly connected to the mounting plate 3. The mounting plate 3 has a mounting groove 10, with a through hole at each end of the mounting groove 10 (not shown in the figure due to obstruction). The pressure component 8 is mounted on the mounting plate 3. The main shaft 6 is movably mounted in the mounting plate 3 through the through holes at both ends of the mounting groove 10. The pressure component 8 drives the main shaft 6 to move up and down. The limiting component 7 is located on the outer side of the main shaft 6 to limit the travel of the main shaft 6. The lower end of the main shaft 6 is connected to the pressure head 5, which is positioned directly above the pressure plate 4.
[0024] like Figure 2 The diagram shows the usage state of the pressure application device for the dielectric sensor in the composite material bag-pressing curing process. During use, a sealed bag 13 is placed in the groove 9. This sealed bag 13 uses a vacuum bag system. Before sealing, an electric heating blanket, thermocouple, and dielectric sensor are placed inside the bag 13. The non-electrode side of the dielectric sensor is attached to the pressure plate 4 (the pressure plate 4 and the dielectric sensor are separated by the sealed bag 13). Then, the dielectric sensor is covered inside the sealed bag 13 with the composite material, and the bag 13 is sealed with a sealing strip. After the above pre-experimental treatment steps, the pressure application device for the dielectric sensor in the composite material bag-pressing curing process can be used to press down through the pressure head 5 to accelerate the penetration of the composite matrix resin into the sensor electrode gap and to study the effect of applied pressure on ionic viscosity.
[0025] Specifically, the pressure application component 7 applies a downward pressure to the spindle 6, causing the spindle 6 to move downward, thereby applying a downward pressure to the dielectric sensor through the pressure head 5. This promotes the impregnation of the matrix resin of the composite material into the electrode gap of the dielectric sensor, accelerating the detection of an effective ionic viscosity signal by the dielectric sensor.
[0026] In this embodiment, the platform 1 serves as an operating table, with the groove 9 forming the operating area. The support rod 2 and mounting plate 3 can be integrally connected to form a support frame, which allows the spindle 6 to be movably positioned above the groove 9. The pressure plate 4 primarily serves a positioning function, the pressure head 5 provides downward pressure, and the pressure application component 7 is a power component. The pressure application component 7 can be a cylinder, linear motor, or other components capable of driving the spindle 6 to move up and down. Of course, the pressure application component 7 can also use other components capable of applying power, which will be described in detail in subsequent embodiments. The limiting component 8 serves a limiting function, ensuring that the spindle 6 moves within a reasonable stroke range and preventing the spindle 6 from dislodging from the mounting groove 10.
[0027] In some embodiments, a specific structure of the pressure applying assembly 7 is provided. As shown in Figure 1 the pressure applying assembly 7 comprises a rotating rod 7-1, a pressing plate 7-2, a rope 7-3 and a counterweight 7-4; wherein the rotating rod 7-1 is rotatably installed on the mounting plate 3, the pressing plate 7-2 is arranged at the lower end of the rotating rod 7-1 and above the main shaft 6, one end of the rotating rod 7-1 is connected with one end of the rope 7-3, and the other end of the rope 7-3 is connected with the counterweight 7-4.
[0028] In this embodiment, the pressure applying assembly 7 provides the power for the pressing of the main shaft 6 based on the principle of lever. Specifically, the counterweight 7-4 is affected by gravity, and drives the rotating rod 7-1 to rotate at the top by the rope 7-3, so as to provide the downward power for the main shaft 6 through the pressing plate 7-2 abutting against the main shaft 6 in the structure as shown in Figure 1 . The torque provided by the pressure applying assembly 7 for the main shaft 6 depends on the weight of the counterweight 7-4 used.
[0029] For example, the rope 7-3 can be selected as a steel wire rope.
[0030] In some embodiments, as shown in Figure 2 , the counterweight 7-4 comprises a weight disc 7-41 and at least one weight 7-42, the weight disc 7-41 is fixedly connected with the rope 7-3, and the weight disc 7-41 is used to place the weight 7-42.
[0031] In this embodiment, the weight of the counterweight 7-4 is controlled by adjusting the weight and number of the weights 7-42 placed in the weight disc 7-41, and then the applied external pressure can be controlled, so as to facilitate the study of the influence of different external pressures on the ion viscosity.
[0032] In some embodiments, the rotating rod 7-1 is a telescopic rod. For example, the rotating rod 7-1 can be a telescopic joint rod, the rope 7-3 is arranged in the farthest section of the telescopic joint rod, the length of the telescopic joint rod is adjusted, so as to change the position of the counterweight 7-4, and then the torque provided by the pressure applying assembly 7 is adjusted.
[0033] In some embodiments, as shown in Figure 1 , the upper end of the mounting plate 3 is provided with a rotating shaft seat 11, the rotating shaft seat 11 is provided with a rotatable rotating shaft (not shown in the figure due to shielding), and one end of the rotating rod 7-1 is fixedly connected with the rotating shaft.
[0034] In some embodiments, as shown in Figure 1 and Figure 2 , one side of the groove 9 is provided with a wire outlet hole 12. The wire outlet hole 12 is used for facilitating the connection of the wires of the electric blanket, the thermocouple and the dielectric sensor in the sealing bag 13 with the external instruments (such as a computer used for data receiving and processing).
[0035] In some embodiments, as shown in Figure 1 The limiting component 8 includes a spring 8-2 and a spring limiting disc 8-1; the spring limiting disc 8-1 is arranged outside the main shaft 6, the spring 8-2 is installed on the spring limiting disc 8-1, one end of the spring 8-2 is connected with the bottom of the installation groove 10, and the spring limiting disc 8-1 and the spring 8-2 are both located in the installation groove 10.
[0036] The pressure applying component 7 formed by the rotating rod 7-1, the pressing plate 7-2, the rope 7-3 and the counterweight 7-4 cannot provide an upward torque for the main shaft 6, so that the main shaft 6 is pressed downward by gravity in the non-use state, and the pressure head 5 is in contact with the pressure receiving plate 4. When the experiment is operated, the main shaft 6 needs to be lifted, and the operation is not very convenient. Therefore, the limiting component 8 is optimized and designed to have a reset function. Specifically, the size of the spring limiting disc 8-1 is larger than the size of the through hole, so that the main shaft 6 cannot be pulled out of the installation groove 10. At the same time, the spring limiting disc 8-1 is also used to install the spring 8-2, and the other end of the spring 8-2 is connected with the bottom of the installation groove 10. Figure 1 As shown in the state, when the pressure applying component 7 does not apply pressure, the main shaft 6 is lifted to a certain height under the action of the spring 8-2, so that the pressure head 5 has a certain height from the pressure receiving plate 4, which is convenient for experimental operation. Figure 2 As shown in the state, when the pressure applying component 7 applies pressure, the main shaft 6 is pressed, the spring 8-2 is compressed, and the pressure head 5 can provide a certain pressure for the sealed bag 13. In this state, different masses and / or quantities of the counterweight 7-42 can be used to control the deformation of the spring 8-2 and the size of the pressure applied to the pressure receiving plate 4.
[0037] In some embodiments, the cross-sectional size of the pressure head 5 is consistent with that of the pressure receiving plate 4.
[0038] According to different purposes, the use methods of the pressure applying device for the composite material bag pressure curing process dielectric sensor are also different.
[0039] For example, two different use methods are provided herein.
[0040] First, the pressure applying device for the composite material bag pressure curing process dielectric sensor is used to accelerate the resin of the composite material matrix to infiltrate the gap between the electrodes of the sensor, and the use method is as follows:
[0041] The non-electrode side of the dielectric sensor is attached to the pressure plate, then the composite material covers the dielectric sensor and is placed in the sealed area, during which the electric blanket is placed in the sealed area, the electric blanket can be placed on the upper surface or lower surface of the composite material (the electric blanket is required not to cover the dielectric sensor), and the thermocouple is placed on the electric blanket. The connecting lines of the dielectric sensor, the electric blanket and the thermocouple are connected out of the opening below the device. The composite material is sealed by using the sealing strip and the sealing bag. Finally, the air in the sealing bag is extracted to provide a negative pressure condition for the curing of the composite material.
[0042] The operating rod is pressed manually or a large mass weight block is placed on the weight shelf to press down the operating rod, so that force is applied to the composite material and the dielectric sensor (the dielectric sensor is placed on the pressure plate), which promotes the matrix resin of the composite material to be immersed into the gap between the sensor electrodes and accelerates the sensor to monitor the effective ion viscosity signal.
[0043] Secondly, the pressure applying device for the dielectric sensor in the composite material bag pressure curing process is used to study the influence of the applied pressure on the ion viscosity, and the use method is as follows:
[0044] The non-electrode side of the dielectric sensor is attached to the pressure plate, then the composite material covers the dielectric sensor and is placed in the sealed area, during which the electric blanket is placed in the sealed area, the electric blanket can be placed on the upper surface or lower surface of the composite material (the electric blanket is required not to cover the dielectric sensor), and the thermocouple is placed on the electric blanket. The connecting lines of the dielectric sensor, the electric blanket and the thermocouple are connected out of the opening below the device. The composite material is sealed by using the sealing strip and the sealing bag, and finally the air in the sealing bag is extracted to provide a negative pressure condition for the curing of the composite material.
[0045] Zero setting is performed: a small mass weight is placed on the weight shelf, so that the pressure head just contacts the sealing bag, which is taken as the zero point. Then, weights of different masses are added to the weight shelf, and the deformation of the spring (compared with the spring length at the zero point) is recorded, so that the actual pressure is calculated through the deformation of the spring, thereby facilitating the study of the influence of the applied pressure on the ion viscosity.
[0046] The above embodiments are only used to illustrate the present application, and are not used to limit the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, therefore all equivalent technical solutions also belong to the scope of the present application, and the patent protection scope of the present application should be defined by the claims.
Claims
1. A press device for a dielectric sensor of a composite bag press-cure process, characterized by, The utility model provides a kind of pressure head, including support, support rod, mounting plate, pressure plate, pressure head, main shaft, pressure assembly and limit component;Wherein, the recess is provided on the support table, the pressure plate is arranged in the recess, the support rod is fixed to the upper end of the support table, the support rod is fixedly connected with the mounting plate, the mounting plate is provided with mounting groove, one through hole is arranged at the upper and lower ends of the mounting groove respectively, the pressure assembly is installed on the mounting plate, the main shaft is movably arranged on the mounting plate by the through hole arranged at the upper and lower ends of the mounting groove, the pressure assembly is used to drive the main shaft to move up and down, the limit component is arranged on the outside of the main shaft, and the limit component is used to limit the travel of the main shaft, the lower end of the main shaft is connected with the pressure head, and the pressure head is arranged directly above the pressure plate.
2. The pressure application device for a composite bag press curing process dielectric sensor as recited in claim 1, wherein, The pressure assembly includes a rotating rod, a lower pressing plate, a rope and a counterweight, wherein the rotating rod is rotatably installed on the mounting plate, the lower pressing plate is arranged at the lower end of the rotating rod, and the lower pressing plate is located above the main shaft, one end of the rotating rod is connected with one end of the rope, and the other end of the rope is connected with the counterweight.
3. The pressure application device for a composite bag press curing process dielectric sensor as recited in claim 2, wherein, The counterweight includes a weight disc and at least one weight, the weight disc is fixedly connected with the rope, and the weight disc is used to place the weight.
4. The pressure application device for a composite bag press curing process dielectric sensor as recited in claim 2, wherein, The rotating rod is a telescopic rod.
5. The pressure application device for a composite bag pressure cure process dielectric sensor as defined in claim 2, wherein, The upper end of the mounting plate is provided with a rotating shaft seat, the rotating shaft seat is provided with a rotating shaft which can rotate, and one end of the rotating rod is fixedly connected with the rotating shaft.
6. The pressure application device for a composite bag press curing process dielectric sensor as recited in claim 1, wherein, One side of the recess is provided with a wire outlet hole.
7. The pressure application device for a composite bag press curing process dielectric sensor as recited in claim 1, wherein, The limit component includes a spring and a spring limiting disc, wherein the spring limiting disc is arranged on the outside of the main shaft, the spring is installed on the spring limiting disc, one end of the spring is connected with the bottom of the mounting groove, and the spring limiting disc and the spring are located in the mounting groove.
8. The pressure application device for a composite bag pressure cure process dielectric sensor as defined in claim 7, wherein, The size of the spring limiting disc is greater than the size of the through hole.
9. The pressure application device for a composite bag pressure cure process dielectric sensor as recited in claim 1, wherein, The support rod is integrally connected with the mounting plate.
10. The pressure application device for a composite bag press curing process dielectric sensor as recited in claim 1, wherein, The cross-sectional size of the pressure head is consistent with that of the pressure plate.