Mineral-reinforced glass fiber composite sheet and its forming process

Abstract

The present application relates to the technical field of glass fiber plate forming, in particular to a mineral reinforced glass fiber composite board and a forming process thereof, which comprises a corrugated pipe, a monitoring box, a first flue gas discharge pipeline and a guide pipe, the top of the corrugated pipe is fixedly connected to the bottom of the monitoring box, the bottom of the first flue gas discharge pipeline is fixedly connected to the top of the monitoring box, the top of the first flue gas discharge pipeline is fixedly connected to the bottom of the guide pipe, a valve one is arranged below the first flue gas discharge pipeline for closing or opening the pipeline of the first flue gas discharge pipeline; the flow and temperature of flue gas are detected in real time through the monitoring box, and whether the total back pressure in the flue gas discharge pipeline is less than the maximum allowable back pressure of the generator set is calculated according to the inner diameter and equivalent length of the current flue gas discharge pipeline, if not, the second flue gas discharge pipeline is opened for transition, so as to avoid that the back pressure of the flue gas discharge pipeline is increased due to abnormal working condition of the generator set, and then the flue gas is discharged without purification, which affects the environment.

Description

Technical Field

[0001] This invention relates to the field of glass fiber board molding technology, specifically to a mineral-reinforced glass fiber composite board and its molding process. Background Technology

[0002] The most common molding process for fiberglass composite boards is lamination hot pressing. This method is suitable for the mass production of electrical insulation boards and high-strength structural boards, specifically mineral-reinforced fiberglass composite boards. The production process is as follows: 1. Raw material preparation: Alkali-free fiberglass cloth treated with coupling agent, epoxy resin (or phenolic resin), curing agent, fillers, etc., are mixed to form a lumpy material; 2. Impregnation: Fiberglass cloth is impregnated in a resin tank, with the resin controlled by a scraper; 3. Pre-impregnation drying: The impregnated fiberglass cloth is sent to an oven to cure the resin to a stage where it is "not sticky but can be remelted," producing pre-impregnated cloth. After cooling, it is cut; 4. Lamination and stacking: The cut pre-impregnated cloth is stacked to a specified thickness, with polished steel plates and release paper placed on top and bottom respectively; 5. Hot pressing and curing: The cloth is sent to a multi-layer hot press to fully cross-link and cure the resin; 6. Post-processing: Pressure holding and cooling – demolding – edge trimming – sanding – deburring – inspection and packaging.

[0003] In the process of producing glass fiber composite boards by lamination and hot pressing, when drying the prepreg, the resin needs to be cured to the stage of "not sticky but remeltable". The factory usually uses a combination of indicators to judge this. The first is the non-sticky test. After wearing clean gloves, the staff needs to press the surface of the prepreg with their fingertips. If it is slightly elastic, not sticky, does not string, and no resin is transferred to the fingers after pressing, the resin is initially qualified. Then, one or more of the following tests are used in combination to determine whether the resin has been cured to the stage of "not sticky but remeltable".

[0004] The above method cannot measure every part of the prepreg fabric, but can only measure a part of the same batch, and the measurement is carried out after drying. If the resin is unqualified, the entire batch of prepreg fabric needs to be reprocessed or discarded, which reduces the efficiency and benefits of the factory. In order to measure the state of the resin during the drying process and make it convenient to adjust the temperature of the drying tunnel in time, a mineral-reinforced glass fiber composite board and its molding process are proposed. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a mineral-reinforced glass fiber composite board and its molding process, which can effectively solve the existing problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a molding process for a mineral-reinforced glass fiber composite board, comprising the following steps: S1: material preparation, S2: resin impregnation, S3: drying, S4: layering and lamination, S5: hot pressing and curing, S6: post-treatment. It also includes a drying device for step S3, the drying device comprising a first drying tunnel, a detection chamber, and a second drying tunnel. The detection chamber is disposed between the first and second drying tunnels, and a detection mechanism is disposed inside the detection chamber. The detection mechanism includes a telescopic component and a contact component. A displacement sensor is disposed on the telescopic component for detecting changes in the distance between the telescopic component and the contact component; when the displacement sensor... If the data detected by the instrument changes as follows: unchanged - decreasing - unchanged - increasing - increasing to a value greater than the initial data and then remaining stable, then the resin is determined to be in a stringy state, and the first drying tunnel is heated, and the second drying tunnel is opened; if the data detected by the displacement sensor changes as follows: unchanged - decreasing - increasing or decreasing - increasing - increasing to a value equal to the initial data and then remaining stable, then the resin is determined to be in an elastic, non-stringy state, and the first drying tunnel is kept in its current state, and the second drying tunnel is closed; if the data detected by the displacement sensor changes as follows: unchanged - decreasing - unchanged - increasing to the initial data - unchanged, then the resin is determined to be in a hard state, and the first drying tunnel is cooled, and the second drying tunnel is closed.

[0007] Furthermore, an electric guide rail is fixedly connected to the inner wall of the top of the detection box; the telescopic assembly includes a movable slider slidably connected to the electric guide rail, an electric telescopic rod fixedly connected to the movable slider, a bearing plate fixedly connected to the output end of the electric telescopic rod, and an extension rod fixedly connected to the bearing plate, and the displacement sensor is fixedly connected to the bottom of the extension rod.

[0008] Furthermore, the contact assembly includes a telescopic spring, a support column, a contact rod, and an extrusion block. The top end of the telescopic spring is fixedly connected to the bottom of the support plate, the top end of the support column is fixedly connected to the bottom end of the telescopic spring, the top end of the contact rod is fixedly connected to the bottom of the support column, and the top end of the extrusion block is installed at the bottom of the contact rod.

[0009] Furthermore, the bearing column is machined with an arc-shaped groove, and the contact assembly is fitted with a sleeve layer, which passes through the arc-shaped groove and fits onto the extrusion block.

[0010] Furthermore, the bearing column and the contact rod are internally machined with a built-in cavity, and an adjustment component is provided inside the built-in cavity for driving the sleeve to rotate; a scraper is fixedly connected to the top of the arc-shaped groove for scraping off the resin adhering to the sleeve.

[0011] Furthermore, the adjustment assembly includes a rotating block rotatably connected to the built-in cavity and a support rod fixedly connected to one end of the rotating block.

[0012] Furthermore, an adjusting gear is fixedly connected to one end of the supporting connecting rod, and a fixed gear is fixedly connected to the inner wall of the detection box through the connecting rod. The fixed gear and the adjusting gear mesh with each other.

[0013] Furthermore, a counterweight is fixedly connected to the other end of the bearing column to ensure that the gravity on both sides of the contact assembly is the same.

[0014] Furthermore, a hollow groove is machined on the inner wall of the top of the bearing column, and the extension rod is slidably connected to the inner wall of the hollow groove. The distance measured by the displacement sensor is the distance between the bottom end of the hollow groove and the bottom of the extension rod.

[0015] A mineral-reinforced glass fiber composite board, wherein the mineral-reinforced glass fiber composite board is formed using the molding process of the mineral-reinforced glass fiber composite board as described above.

[0016] Beneficial effects The technical solution provided by this invention has the following advantages compared with known public technologies: By adding a testing chamber between two drying tunnels, the resin state on the impregnated fiberglass cloth can be tested. If the test fails, the next drying tunnel can be opened for processing. The resin state can be tested during the production process. Compared with the existing technology that requires the whole process to be dried before testing, this method is more immediate, allows for flexible adjustment of the drying temperature, reduces waste, and avoids secondary processing time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the drying process device in this invention; Figure 2 This is a schematic cross-sectional view of the drying process device in this invention; Figure 3 This is a schematic diagram of the detection mechanism structure of the drying process device in this invention; Figure 4 This is an exploded view of the detection mechanism of the drying process device in this invention; Figure 5 This is a schematic diagram of the telescopic component structure of the detection mechanism of the drying process device in this invention; Figure 6This is a schematic diagram of the contact component structure of the detection mechanism in the drying process device of the present invention; Figure 7 This is a flowchart illustrating the use of the drying device in this invention.

[0019] Figure Labels 100 - First drying tunnel; 200 - Testing box; 201 - Electric guide rail; 202 - Fixed gear; 210 - Telescopic assembly; 211 - Moving slider; 212 - Electric telescopic rod; 213 - Load-bearing connecting plate; 214 - Extension connecting rod; 215 - Displacement sensor; 220 - Contact assembly; 221 - Telescopic spring; 222 - Bearing column; 223 - Contact rod; 224 - Extrusion block; 225 - Internal cavity; 226 - Arc groove; 227 - Counterweight block; 227 - Scraper; 229 - Hollow groove; 230 - Adjustment component; 231 - Support link; 232 - Adjustment gear; 233 - Rotating block; 300 - Second drying tunnel; 400-layer. Detailed Implementation

[0020] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0021] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0022] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0023] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0024] The present invention will be further described below with reference to embodiments.

[0025] Example: A molding process for a mineral-reinforced glass fiber composite panel, such as Figure 1-6 As shown, it includes the following steps: S1: Material preparation, prepare alkali-free glass fiber cloth treated with coupling agent, and lumps formed by mixing epoxy resin or phenolic resin with curing agent, filler, etc. S2: Impregnation, the alkali-free glass fiber cloth is impregnated through a resin tank formed by the clump of material, and the resin is controlled by flattening with a blade. The resin content is 40%-50%, preferably 45%. S3: Drying. The pre-impregnated fiberglass cloth is fed into the first drying tunnel 100 for drying, and then conveyed to the testing chamber 200 where the resin state is tested by a testing mechanism. If the resin state is detected as stringy, the temperature of the first drying tunnel 100 is increased, the heating unit of the second drying tunnel 300 is turned on, and the pre-impregnated fiberglass cloth is fed into the second drying tunnel 300 for continued drying. If the resin state is detected as elastic and non-stringy, the temperature of the first drying tunnel 100 is maintained, the heating unit of the second drying tunnel 300 is turned off, and the pre-impregnated fiberglass cloth is fed into the second drying tunnel 300 for further transport. If the resin state is detected as hard, the temperature of the first drying tunnel 100 is decreased, the conveyor belt speed is increased, and the pre-impregnated fiberglass cloth is fed into the second drying tunnel 300 for further transport. The unqualified parts of the pre-impregnated cloth are cut off, and the qualified parts are cooled and then cut. S4: Laying up and stacking, stacking the cut pre-impregnated tape to the specified thickness, with polished steel plates and release paper placed on the top and bottom respectively; S5: Hot pressing and curing, the resin is fed into a multi-layer hot press, heated to 150-180℃ and pressurized to 3-10MPa, with the preferred temperature being 180℃ and the preferred pressure being 8MPa, so that the resin is completely cross-linked and cured. S6: Post-processing, pressure holding and cooling - demolding - edge trimming - sanding - deburring - inspection and packaging; during pressure holding and cooling, the temperature needs to be cooled to below 60℃ before pressure can be released; It is worth noting that the first drying tunnel 100, the testing chamber 200, the second drying tunnel 300, and the testing mechanism are all drying devices used in step S3. The testing chamber 200 is located between the first drying tunnel 100 and the second drying tunnel 300, and the testing mechanism is located inside the testing chamber 200. Conveyor belts are installed inside the first drying tunnel 100, the testing chamber 200, and the second drying tunnel 300 for transporting the impregnated fiberglass cloth. Heating units are installed inside the first drying tunnel 100 and the second drying tunnel 300. The heating temperature range of the heating units is 100-150℃, and the preferred initial temperature is 115℃. This is because the resin will cross-link and solidify due to excessive temperature, making it difficult to continue heating and melting. Therefore, this situation needs to be avoided. Lower temperatures will only make the resin appear stringy and sticky. It can be further heated to an elastic and non-stringy state through the second drying tunnel 300. Specifically, an electric guide rail 201 is fixedly connected to the inner wall of the top of the detection box 200. The detection mechanism includes a telescopic component 210 and a contact component 220. A displacement sensor 215 is provided on the telescopic component 210 to detect the distance change between the telescopic component 210 and the contact component 220. The telescopic component 210 includes a movable slider 211 slidably connected to the electric guide rail 201, an electric telescopic rod 212 fixedly connected to the movable slider 211, a bearing connecting plate 213 fixedly connected to the output end of the electric telescopic rod 212, and an extension connecting rod 214 fixedly connected to the bearing connecting plate 213. The displacement sensor 215 is fixedly connected to the bottom of the extension connecting rod 214. It should be noted that the moving direction of the movable slider 211 on the electric guide rail 201 is the same as the moving direction of the conveyor belt, and the moving speed of the movable slider 211 is the same as the moving speed of the conveyor belt, so that the contact component 220 and the impregnated fiberglass cloth remain relatively stationary when they come into contact. Further, the contact assembly 220 includes a telescopic spring 221, a support column 222, a contact rod 223, and an extrusion block 224. The top end of the telescopic spring 221 is fixedly connected to the bottom of the support plate 213, the top end of the support column 222 is fixedly connected to the bottom end of the telescopic spring 221, the top end of the contact rod 223 is fixedly connected to the bottom of the support column 222, and the top end of the extrusion block 224 is installed at the bottom of the contact rod 223. It is worth noting that the shape of the extrusion block 224 is one of cylindrical, hemispherical, or rectangular. The preferred shape of the extrusion block 224 is hemispherical, which facilitates the sleeve 400 to be fitted onto the extrusion block 224 and prevents the extrusion block 224 from tearing the sleeve 400. This also prevents the stringy resin from sticking to the contact assembly 220. On the 20th, the sleeve 400 needs to be fitted onto the contact component 220. To prevent resin from sticking to the sleeve 400 and affecting subsequent tests, the following design is implemented: An arc-shaped groove 226 is machined on the support column 222. The sleeve 400 is fitted onto the contact component 220. The sleeve 400 passes through the arc-shaped groove 226 and forms a tensioned ring with the bottom of the extrusion block 224. An internal cavity 225 is machined inside the support column 222 and the contact rod 223. An adjustment component 230 is installed inside the internal cavity 225 to drive the sleeve 400 to rotate. This ensures that the part of the sleeve 400 in contact with the resin-impregnated fiberglass cloth is different each time a test is conducted, thus preventing resin from sticking to the sleeve 400 and affecting subsequent tests. Specifically… The adjustment assembly 230 includes a rotating block 233 rotatably connected to the built-in cavity 225, and a support rod 231 fixedly connected to one end of the rotating block 233. A stepper motor is fixedly connected to one end of the support rod 231, driving the rotating block 233 to rotate, thereby rotating the sleeve 400 and adjusting the part in contact with the impregnated fiberglass cloth. To reduce equipment maintenance costs, the present invention also provides a scheme that can drive the sleeve 400 to rotate. Specifically, an adjusting gear 302 is fixedly connected to one end of the support rod 231, and a fixed gear 202 is fixedly connected to the inner wall of the detection box 200 via a connecting rod. The fixed gear 202 and the adjusting gear 302 mesh with each other, and the telescopic assembly 210 drives the... When the contact component 220 compresses the impregnated fiberglass cloth, the moving slider 211 moves first. At this time, the fixed gear 202 and the adjusting gear 302 mesh, causing the sleeve 400 to rotate. Then, the electric telescopic rod 212 drives the contact component 220 to move downward. After the contact component 220 makes contact with the impregnated fiberglass cloth, the electric telescopic rod 212 drives the contact component 220 to move upward a certain distance and then stops. Only after the moving slider 211 returns to its initial position does the electric telescopic rod 212 continue to drive the contact component 220 to move upward to its initial position. This ensures that during the starting phase, the fixed gear 202 and the adjusting gear 302 mesh, causing the sleeve 400 to rotate, while during the return phase, the fixed gear 202 and the adjusting gear 302 do not make contact.Therefore, the sleeve 400 will not rotate. After adding the above structure, the center of gravity of the overall structure of the contact assembly 220 is not on the central axis of the contact rod 223, affecting subsequent measurement and calculation. Therefore, a counterweight 227 is fixedly connected to the other end of the bearing column 222 to make the gravity on both sides of the contact assembly 220 the same, keeping the center of gravity of the contact assembly 220 on the central axis of the contact rod 223. Furthermore, in order to increase the number of uses of the sleeve 400, a scraper 228 is fixedly connected to the top of the arc groove 226 to scrape off the resin adhering to the sleeve 400. A hollow groove 229 is processed on the inner wall of the top of the bearing column 222, and the extension connecting rod 214 is slidably connected to the inner wall of the hollow groove 229. The distance measured by the displacement sensor 215 is the distance between the bottom end of the hollow groove 229 and the bottom of the extension connecting rod 214.

[0026] The testing agency determines the resin condition as follows: Phase 1: When the telescopic component 210 is stationary or when the electric telescopic rod 212 drives the contact component 220 to move downward at a constant speed without contacting the impregnated fiberglass cloth, the contact component 220 is subjected to its own weight and the elastic force of the telescopic spring 221. The elastic force is upward, and the two remain in balance. At this time, the displacement sensor 215 detects the distance between the extension link 214 and the hollow groove 229, which is related to the elastic force. Since the elastic force is constant, the data detected by the displacement sensor 215 remains constant. It should be noted that when the moving slider 211 is started or the electric telescopic rod 212 is started, the data detected by the displacement sensor 215 will have a slight change, which can be ignored. The second stage: from the moment the sleeve 400 on the contact component 220 comes into contact with the resin-impregnated fiberglass cloth until the electric telescopic rod 212 extends to the specified length, the contact component 220 is subjected to its own weight, the elastic force of the telescopic spring 221, and the supporting force of the resin-impregnated fiberglass cloth on the contact component 220. These three forces remain in balance. Generally, due to the specified extension length of the electric telescopic rod 212, the telescopic spring 221 is in an extended state throughout the entire process, i.e., the elastic force is upward. During this process, the telescopic spring 221 contracts, so the data detected by the displacement sensor 215 decreases. The three types of resin on the resin-impregnated fiberglass cloth... The decrease in flow rate varies depending on the state. In the state where the resin is stringy and sticky (hereinafter referred to as State 1), the resin has strong fluidity, and the supporting force on the contact component 220 increases slowly, so the data detected by the displacement sensor 215 decreases slowly. In the state where the resin is elastic and not stringy (hereinafter referred to as State 2), the resin has weak fluidity, and the supporting force on the contact component 220 increases relatively slowly, so the data detected by the displacement sensor 215 decreases relatively slowly. In the state where the resin is hard (hereinafter referred to as State 3), the resin has virtually no fluidity, and the supporting force on the contact component 220 increases rapidly, so the data detected by the displacement sensor 215 decreases rapidly. Phase 3: The electric telescopic rod 212 extends to a specified length and stops for a period of time. In state 1, the contact component 220 is stuck and does not move for a long time, and the data detected by the displacement sensor 215 remains unchanged. In state 2, the electric telescopic rod 212 stops, but the contact component 220 is not locked. Under the adhesive effect of the resin, it will move up and down to reach a new equilibrium state, and the data detected by the displacement sensor 215 fluctuates. In state 3, the electric telescopic rod 212 stops without change, and the data detected by the displacement sensor 215 remains unchanged. Fourth stage: The electric telescopic rod 212 shortens from the specified length to the position where the contact component 220 contacts the impregnated fiberglass cloth. For state one, the data detected by the displacement sensor 215 increases slowly. For state two, the data detected by the displacement sensor 215 increases more slowly. For state three, the data detected by the displacement sensor 215 increases to the initial data. Fifth stage: The electric telescopic rod 212 shortens from the position of contact with the fiberglass cloth after the contact component 220 is impregnated with resin to the initial position. For state one, since the resin is bonded to 400, it has a downward traction force on the contact component 220, so the final data detected by the displacement sensor 215 is larger than the initial data. For state two, the data detected by the displacement sensor 215 increases to the initial data. For state three, the data detected by the displacement sensor 215 remains unchanged. In summary, by measuring the distance between the extension connecting rod 214 and the hollow groove 229 in five segments using the displacement sensor 215, the state of the resin can be determined, as follows: The change in the detection data corresponding to state 1 is: unchanged - decrease - unchanged - increase - increase to a value greater than the initial data and then remain unchanged; The change in the detection data corresponding to state two is: unchanged - decrease - increase or decrease - increase - increase to equal the initial data and then remain. The change in detection data corresponding to state three is: unchanged - decrease - unchanged - increase to the initial data - unchanged.

[0027] A preferred drying method is, for example, Figure 7As shown, the temperature of the first drying tunnel 100 is set to 115℃. If the data detected by the displacement sensor changes from unchanged to decreasing to unchanged to increasing to increasing to a level greater than the initial data and then remaining stable, the temperature of the first drying tunnel 100 is increased by 10℃, and the second drying tunnel 300 is opened to dry the glass fiber cloth after it has been impregnated in the tested section. If the data detected by the displacement sensor changes from unchanged to decreasing to increasing or decreasing to increasing to a level equal to the initial data and then remaining stable, the temperature of the first drying tunnel 100 is maintained, and the second drying tunnel 300 is closed. If the data detected by the displacement sensor changes from unchanged to decreasing to unchanged to increasing to the initial data and then remaining unchanged, the temperature of the first drying tunnel 100 is reduced by 10℃. This process is repeated. Regardless of changes in raw materials and the environment, this drying device can always find the most suitable drying temperature, thus improving flexibility.

[0028] The above-mentioned glass fiber composite board forming process can be widely used in lamination hot pressing, especially in the production of mineral-reinforced glass fiber composite boards. Mineral-reinforced glass fiber composite boards produced by the above process have high product strength consistency.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A molding process for a mineral-reinforced glass fiber composite board, comprising the following steps: S1: Material preparation; S2: Resin impregnation; S3: Drying; S4: Lamination and stacking; S5: Hot pressing and curing; S6: Post-treatment. The characteristic feature is... It also includes a drying device for step S3, the drying device including a first drying tunnel (100), a detection box (200) and a second drying tunnel (300), the detection box (200) being disposed between the first drying tunnel (100) and the second drying tunnel (300), the detection box (200) being provided with a detection mechanism inside the detection box (200), the detection mechanism including a telescopic component (210) and a contact component (220), the telescopic component (210) being provided with a displacement sensor (215) for detecting the change in distance between the telescopic component (210) and the contact component (220); When the data detected by the displacement sensor (215) changes as follows: unchanged - decrease - unchanged - increase - increase to greater than the initial data and then remain unchanged, the resin is determined to be in a stringy state, and the first drying tunnel (100) is heated and the second drying tunnel (300) is opened. When the data detected by the displacement sensor (215) changes as follows: unchanged - decrease - increase or decrease - increase - increase to equal the initial data and then remain, the state of the resin is determined to be elastic and non-stringy, and the first drying tunnel (100) is kept in the current state, and the second drying tunnel (300) is closed. When the data detected by the displacement sensor (215) changes as follows: unchanged - decrease - unchanged - increase to the initial data - unchanged, the resin is determined to be in a hard state, and the first drying tunnel (100) is cooled down and the second drying tunnel (300) is closed.

2. The molding process of a mineral-reinforced glass fiber composite board according to claim 1, characterized in that, An electric guide rail (201) is fixedly connected to the inner wall of the top of the testing box (200); The telescopic assembly (210) includes a movable slider (211) slidably connected to an electric guide rail (201), an electric telescopic rod (212) fixedly connected to the movable slider (211), a bearing connecting plate (213) fixedly connected to the output end of the electric telescopic rod (212), and an extension connecting rod (214) fixedly connected to the bearing connecting plate (213). The displacement sensor (215) is fixedly connected to the bottom of the extension connecting rod (214).

3. The molding process of a mineral-reinforced glass fiber composite board according to claim 2, characterized in that, The contact assembly (220) includes a telescopic spring (221), a support column (222), a contact rod (223), and a pressing block (224). The top of the telescopic spring (221) is fixedly connected to the bottom of the support plate (213), the top of the support column (222) is fixedly connected to the bottom of the telescopic spring (221), the top of the contact rod (223) is fixedly connected to the bottom of the support column (222), and the top of the pressing block (224) is installed on the bottom of the contact rod (223).

4. The molding process of a mineral-reinforced glass fiber composite board according to claim 3, characterized in that, The bearing column (222) is machined with an arc groove (226), and the contact component (220) is fitted with a sleeve (400), which passes through the arc groove (226) and is fitted onto the extrusion block (224).

5. The molding process of a mineral-reinforced glass fiber composite board according to claim 4, characterized in that, The bearing column (222) and the contact rod (223) have an internal cavity (225) machined inside, and an adjustment component (230) is provided inside the internal cavity (225) for driving the sleeve (400) to rotate; A scraper (228) is fixedly connected to the top of the arc groove (226) for scraping off the resin adhering to the sleeve (400).

6. The molding process of a mineral-reinforced glass fiber composite board according to claim 5, characterized in that, The adjustment assembly (230) includes a rotating block (233) rotatably connected to the built-in cavity (225) and a support rod (231) fixedly connected to one end of the rotating block (233).

7. The molding process of a mineral-reinforced glass fiber composite board according to claim 6, characterized in that, One end of the support rod (231) is fixedly connected to an adjusting gear (302), and the inner wall of the detection box (200) is fixedly connected to a fixed gear (202) via a connecting rod. The fixed gear (202) and the adjusting gear (302) mesh with each other.

8. The molding process of a mineral-reinforced glass fiber composite board according to claim 7, characterized in that, The other end of the support column (222) is fixedly connected to a counterweight (227) so that the gravity on both sides of the contact component (220) is the same.

9. The molding process of a mineral-reinforced glass fiber composite board according to claim 8, characterized in that, The top inner wall of the supporting column (222) is machined with a hollow groove (229), the extension rod (214) is slidably connected to the inner wall of the hollow groove (229), and the distance measured by the displacement sensor (215) is the distance between the bottom end of the hollow groove (229) and the bottom of the extension rod (214).

10. A mineral-reinforced glass fiber composite board, characterized in that, The mineral-reinforced glass fiber composite board is manufactured using the molding process described in any one of claims 1-9.

Images