Fiber reinforced gypsum board extrusion molding apparatus

Abstract

The application discloses a kind of fiber reinforced gypsum board extrusion forming equipment, by rack, the upper and lower row roller group being arranged on rack, the forming groove being located above lower roller group, the driving mechanism of driving roller group rotation is constituted;Lower roller group is support conveying roller group;Forming groove and / or rack are provided with the structure of reducing equipment length.This application can continuously produce fiber reinforced gypsum board.No need for long distance conveying equipment of prior art, maximum reduce initial thick paving conveying distance, can reduce the length of equipment, reduce the land occupation of equipment.Can allow certain degree of unloading speed fluctuation, its applicability obtains certain extension.Satisfy the need of initial thick paving, also facilitate even paving, easily reach the thickness required finally, facilitate the thickness of gypsum slurry at the beginning to basically satisfy the thickness required finally, can realize the extrusion forming of fiber reinforced gypsum board.

Description

Technical Field

[0001] This invention relates to special equipment for the production of energy-saving building materials, specifically to a fiber-reinforced gypsum board extrusion molding equipment. Background Technology

[0002] In interior decoration, gypsum board serves as both a base layer and a finishing material, boasting excellent properties such as light weight, relatively high strength, ease of construction, and thermal insulation and fire resistance. It is widely used in both residential and commercial spaces, including interior ceiling finishes, lightweight partitions, and structural cladding. Currently, the most commonly used gypsum board types in interior decoration are paper-faced gypsum board and fiber-reinforced gypsum board.

[0003] Patent CN209466393U discloses an extrusion molding equipment for producing high-temperature resistant fiber-reinforced gypsum board. Its structure includes a bottom shell, a pressure groove, side plates, a control box, a power switch, a rising switch, a falling switch, a circuit board, a microcontroller, a top shell, a hydraulic cylinder, an oil tank, conduits, a hydraulic pump, a pressure plate, a power cord, and an ejector device. To solve the problem of low production efficiency caused by the inability to easily and quickly remove extruded gypsum board, an ejector device is installed inside the bottom shell. Rotating the handle drives a connecting rod to rotate a worm gear, which in turn drives a turbine, which in turn drives a threaded sleeve. The rotation of the threaded sleeve causes the screw to slide up and down along the sleeve, thereby pushing the top plate to eject the gypsum board, achieving rapid removal and improved production efficiency. However, it cannot continuously produce fiber-reinforced gypsum board, resulting in low efficiency. In his paper "Development, Research and Application of Equipment for Wood Fiber Reinforced Gypsum Board Production Line," published in the 8th issue of *Modern Manufacturing Technology and Equipment* in 2016, Sun Jinyu mentioned that: ① A belt conveyor feeder delivers the mixed material to ② a small hopper, and then ③ a material output controller controls the output of the mixed material. While the material output controller feeds the material at a uniform speed, a material distributor is set up for the next process. This material distributor serves two purposes: first, to control the uniformity of the mixed material; and second, to reduce the spherical shape of the mixed material. However, like other existing technologies such as gypsum board roll forming machines, a material distribution system is needed to ensure the uniform spreading of gypsum. Currently, the conveying distance required for the initial thick layer of gypsum slurry is very long, resulting in an excessively long overall equipment length. Furthermore, the number of rollers required in the roller group is also very large. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a fiber-reinforced gypsum board extrusion molding equipment that can continuously produce fiber-reinforced gypsum boards.

[0005] To achieve the above objectives, the technical solution of the present invention is to design a fiber-reinforced gypsum board extrusion molding equipment, which consists of a frame, upper and lower rows of rollers arranged on the frame, a molding groove located above the lower roller group, and a drive mechanism for driving the roller group to rotate.

[0006] The lower roller assembly supports the conveyor roller assembly; the forming trough and / or frame are equipped with structures to reduce equipment length. Due to continuous roller pressing, continuous production of fiber-reinforced gypsum board can be achieved. The reduced equipment length structures shorten the overall equipment length and reduce the floor space required.

[0007] A further technical solution is that the structure includes an elastic cover plate fixedly installed on the upper opening of the forming tank; the length of the elastic cover plate is less than the length of the forming tank, and the elastic cover plate is positioned near the slurry input end of the forming tank; a thickness-fixing slide plate is provided inside the forming tank and below the elastic cover plate, which is slidably installed with the forming tank. The thickness-fixing slide plate consists of a vertical plate and a horizontal plate fixedly connected to the vertical plate, with the horizontal plate located above the vertical plate. The vertical plate and the horizontal plate have the same length and are consistent with the width of the forming tank; a gypsum mixer is positioned above the slurry input end of the forming tank. The forming tank is in the shape of a channel steel. The elastic cover plate is positioned near the slurry input end of the forming tank to prevent slurry from overflowing when it is input into the forming tank.

[0008] A further technical solution is that the discharge port of the gypsum mixer is connected to an inclined discharge plate, which is located above the forming trough.

[0009] With this setup, the discharge from the gypsum mixer directly drives the thickness-fixing slide plate to move horizontally. Combined with the cover plate and the roller group above it, fiber-reinforced gypsum board can be extruded and molded. This solution uses the thickness-fixing slide plate to fix the thickness, and due to the setting of the thickness-fixing slide plate, the initial thickness of the gypsum slurry basically meets the requirements. The height of the molding trough is greater than the thickness-fixing slide plate, which can also meet the requirements for initial thick laying. There is no need for the long-distance conveying equipment of existing technologies, which minimizes the conveying distance of the initial thick laying, reduces the length of the equipment, and reduces the footprint of the equipment. By using the thickness-fixing slide plate (which has a vertical plate on it, acting as a baffle), the gypsum slurry is pushed by the gypsum slurry discharged from the gypsum mixer. Combined with the discharge of the gypsum mixer and the pressure of the elastic cover plate, it satisfies the initial thickness requirement and achieves rapid and even spreading and proper air release. In addition, since the gypsum mixer discharges directly into the forming tank at a relatively fast speed, the thickness-fixing slide plate can basically ensure that the gypsum slurry on the side of the thickness-fixing slide plate near the gypsum slurry input end reaches the thickness at the horizontal plate of the thickness-fixing slide plate, which is the final roll forming thickness. Because of the thickness plate setting, the initial gypsum slurry basically reaches the final required thickness. Combined with the elastic cover plate that is slightly higher than the thickness plate, it satisfies the initial thickness requirement on the one hand, and allows for a certain degree of fluctuation in the feeding speed on the other hand. In addition, it can accelerate the even spreading speed and properly ventilate (the gypsum mixer directly discharges the material, and the elasticity of the elastic cover plate compresses the gypsum slurry in the forming groove inside the elastic cover plate), which speeds up the even spreading process, thus eliminating the need for initial thickness spreading equipment.

[0010] Another technical solution is that the gypsum mixer has several discharge ports arranged side by side, and each discharge port is connected to the molding tank through a discharge pipe.

[0011] This design avoids localized accumulation or voids in the slurry, fully utilizes the discharge kinetic energy of the gypsum mixer in conjunction with the elastic cover plate, thickness-fixing slide plate, and extrusion rollers to achieve constant-thickness extrusion, and eliminates the need for long-distance conveying equipment required for initial thick-lay gypsum slurry, thus reducing equipment length and footprint. The elastic cover plate provides some leeway when dealing with fluctuations in the gypsum mixer's discharge speed. For example, if the discharge speed suddenly increases, the elastic cover plate can bulge upwards to prevent an increase in the amount of slurry reaching the forming tank due to the sudden increase in discharge speed. Conversely, if the discharge speed suddenly decreases, the elastic cover plate can bulge downwards to prevent slurry voids caused by the deceleration of discharge speed. Therefore, this solution allows for a certain degree of discharge speed fluctuation, expanding its applicability and eliminating the need for long-distance conveying equipment, thus reducing equipment length (since initial thick-lay gypsum slurry typically requires a relatively long conveying distance to ensure even distribution, initial degassing, and maintain fluidity before entering the roller press, reducing the initial thick-lay conveying distance reduces equipment length).

[0012] A further technical solution is to fix a rigid cover plate above the opening of the forming tank. The rigid cover plate is made of Teflon material and is fixedly connected to the elastic cover plate. The rigid cover plate and the elastic cover plate are arranged sequentially along the conveying direction. The rigid cover plate consists of two parts, one part is inclined and the other part is horizontal. The inclined part and the horizontal part are arranged sequentially along the conveying direction. The height of the forming tank part located on the horizontal part of the rigid cover plate and the forming tank part located after the horizontal part along the conveying direction are the same as the height of the horizontal part of the rigid cover plate.

[0013] The rigid cover plate is made of Teflon, which is easy to peel off from the gypsum slurry. A rigid cover plate is set after the elastic cover plate. On the one hand, it meets the initial thickness requirements and the elasticity of the elastic cover plate facilitates even spreading. On the other hand, the larger amount of slurry in the elastic cover plate is accelerated through a similar constriction, making it easier to reach the final required thickness (i.e., the height of the rigid cover plate). It is also easier to ensure that the gypsum slurry inside the plate is already "full" when the thickness-fixing slide plate slides. A small section of the rigid cover plate works in conjunction with the elastic cover plate. The thickness-fixing slide plate is pushed out by the discharge diameter of the gypsum mixer. With this setup, the discharge of the gypsum mixer, combined with the inclined discharge plate (or directly through the discharge pipe), forms the driving force for the translation of the thickness-fixing slide plate. Combined with the thickness-fixing of the rigid cover plate (ensuring that the initial thickness of the gypsum slurry basically meets the final required thickness), the extrusion molding of fiber-reinforced gypsum board can be achieved.

[0014] The upper roller group has several pressure rollers located above the elastic cover plate, and the spacing between adjacent pressure rollers located above the elastic cover plate is smaller than the spacing between adjacent pressure rollers located in other positions of the upper roller group.

[0015] Multiple pressure rollers are set on the elastic cover plate with the spacing between the pressure rollers as small as possible. This way, after the gypsum slurry is received in the forming tank, the gypsum slurry in the forming tank and under the elastic cover plate can be squeezed more densely to expel some water and air, and at the same time to make it dense.

[0016] A lower horizontal plate is fixedly connected to the vertical plate of the thickness-fixing slide plate. A weighing sensor is installed under the lower horizontal plate. The weighing sensor is connected to a controller located outside the frame. The controller is connected to a drive hydraulic cylinder. A locking pin is fixedly connected to the exposed end of the piston rod of the drive hydraulic cylinder. A recess for inserting the locking pin is provided on the side of the forming groove. An insertion hole matching the recess is provided on the vertical plate of the thickness-fixing slide plate.

[0017] The thickness-fixing slide only slides when the thickness of the gypsum slurry reaches the maximum thickness of the thickness-fixing slide on the inner side of the thickness-fixing slide (i.e., the side of the thickness-fixing slide where the vertical plate faces the gypsum input). This ensures that the thickness meets the requirements in the initial stage, which can reduce the length of roller sets such as shaping rollers, thickness-adjusting rollers, or compaction rollers.

[0018] A portion of the side of the molding groove is made of elastic rubber material, forming an elastic rubber part. The elastic rubber part is sealed and fixedly glued to the other parts of the side of the molding groove. The recess is set on the elastic rubber part and corresponds to the location of the vertical plate of the thickness-fixing slide at the initial position. The insertion hole set on the vertical plate of the thickness-fixing slide is a circular blind hole, and the locking pin is cylindrical.

[0019] The other parts of the side of the forming groove are generally made of metal.

[0020] The structure includes a vertical baffle integrally installed at the end of the forming trough away from the gypsum slurry input. The structure also includes an impeller located below the forming trough, with the impeller shaft fixedly connected to the roller shaft of one of the rollers in the lower roller group. Impellers are provided on both sides below the forming trough in the width direction. A motion sensor is installed on the frame, and the motion sensor is connected to a controller located outside the extrusion molding equipment. The controller is connected to a drive reduction motor, which is fixedly connected to the frame. The output shaft of the drive reduction motor is fixedly connected to the roller shaft of one of the rollers in the lower roller group.

[0021] Existing technologies prevent gypsum slurry from overflowing from both sides during its entry into the molding equipment. This embodiment adopts a reverse approach: instead of preventing overflow, it utilizes it, using the overflowed slurry as the driving force for the conveyor rollers. If no overflow occurs, it indicates the slurry thickness has not reached the set thickness, and the lower roller group (i.e., the conveyor rollers) does not operate. Overflow indicates the slurry thickness has reached the set thickness, and the overflowing slurry falls onto the impeller, pushing it. The impeller drives the lower roller group to rotate, thus conveying the slurry into the molding trough. During this conveying process, the upper roller group also plays a role in extrusion molding. In conjunction with a sensor, if the sensor detects that the lower roller group is not operating but slurry is still overflowing, the system will detect this. (This indicates that due to the squeezing action of the upper roller group, the impeller's drive can no longer continue to drive the lower roller group to rotate.) At this time, the controller controls the drive reduction motor to drive the lower roller group to rotate. In this way, the running time of the drive reduction motor of the lower roller group can be reduced. It only starts when the lower roller group stops rotating due to the pressure of the upper roller group. The energy consumption is low and the running time is short, which also extends the life of the drive reduction motor. Therefore, in this embodiment, when conveying the forming tank, it is indicated that the gypsum slurry in the forming tank has reached the set thickness. Therefore, the number of rollers in the upper roller group can be reduced in the subsequent extrusion forming process, which can reduce the length of the equipment.

[0022] The motion sensor is either an accelerometer fixedly connected to the frame or a rotary encoder mounted on the roller shaft of the lower roller assembly.

[0023] An accelerometer is used to detect the vibration of the conveyor roller itself (indirectly determining whether the upper forming trough has moved); a rotary encoder detects whether the lower roller group is rotating.

[0024] The advantages and beneficial effects of this invention are as follows: the discharge from the gypsum mixer directly generates the power to drive the thickness-fixing slide plate to move horizontally. Combined with the cover plate and the roller group set above the cover plate, the extrusion molding of fiber-reinforced gypsum board can be realized. In this solution, the thickness is fixed by the thickness-fixing slide plate, and due to the setting of the thickness-fixing slide plate, the initial thickness of the gypsum slurry basically meets the requirements. The height of the molding trough is greater than that of the thickness-fixing slide plate, which can also meet the requirements of the initial thick laying. There is no need for the long-distance conveying equipment of the prior art, which minimizes the conveying distance of the initial thick laying, reduces the length of the equipment, and reduces the footprint of the equipment. By using the thickness-fixing slide plate (which has a vertical plate on it, acting as a baffle), the gypsum slurry is pushed by the gypsum slurry discharged from the gypsum mixer. Combined with the discharge of the gypsum mixer and the pressure of the elastic cover plate, it satisfies the initial thickness requirement and achieves rapid and even spreading and proper air release. In addition, since the gypsum mixer discharges directly into the forming tank at a relatively fast speed, the thickness-fixing slide plate can basically ensure that the gypsum slurry on the side of the thickness-fixing slide plate near the gypsum slurry input end reaches the thickness at the horizontal plate of the thickness-fixing slide plate, which is the final roll forming thickness. Because of the thickness plate setting, the initial gypsum slurry basically reaches the final required thickness. Combined with the elastic cover plate that is slightly higher than the thickness plate, it satisfies the initial thickness requirement on the one hand, and allows for a certain degree of fluctuation in the feeding speed on the other hand. In addition, it can accelerate the even spreading speed and properly ventilate (the gypsum mixer directly discharges the material, and the elasticity of the elastic cover plate compresses the gypsum slurry in the forming groove inside the elastic cover plate), which speeds up the even spreading process, thus eliminating the need for initial thickness spreading equipment.

[0025] This design avoids localized accumulation or voids in the slurry and fully utilizes the discharge kinetic energy of the gypsum mixer in conjunction with the elastic cover plate, thickness-fixing slide plate, and extrusion rollers to achieve fixed-thickness extrusion. It also eliminates the need for long-distance conveying equipment required for initial thick-lay gypsum slurry, reducing equipment length and footprint. The elastic cover plate provides some leeway when dealing with fluctuations in the gypsum mixer's discharge speed. For example, if the discharge speed suddenly increases, the elastic cover plate can bulge upwards to prevent an increase in the amount of slurry reaching the forming tank due to the sudden increase in discharge speed. Conversely, if the discharge speed suddenly decreases, the elastic cover plate can bulge downwards to prevent voids in the slurry caused by the deceleration. Therefore, this design allows for a certain degree of discharge speed fluctuation, expanding its applicability and eliminating the need for long-distance conveying equipment, thus reducing equipment length (since initial thick-lay gypsum slurry typically requires a relatively long conveying distance to ensure even distribution, initial degassing, and maintain fluidity before entering the roller press, reducing the initial conveying distance reduces equipment length).

[0026] The rigid cover plate is made of Teflon, which is easy to peel off from the gypsum slurry. A rigid cover plate is set after the elastic cover plate. On the one hand, it meets the initial thickness requirements and the elasticity of the elastic cover plate facilitates even spreading. On the other hand, the larger amount of slurry in the elastic cover plate is accelerated through a similar constriction, making it easier to reach the final required thickness (i.e., the height of the rigid cover plate). It is also easier to ensure that the gypsum slurry inside the plate is already "full" when the thickness-fixing slide plate slides. A small section of the rigid cover plate works in conjunction with the elastic cover plate. The thickness-fixing slide plate is pushed out by the discharge diameter of the gypsum mixer. With this setup, the discharge of the gypsum mixer, combined with the inclined discharge plate (or directly through the discharge pipe), forms the driving force for the translation of the thickness-fixing slide plate. Combined with the thickness-fixing of the rigid cover plate (ensuring that the initial thickness of the gypsum slurry basically meets the final required thickness), the extrusion molding of fiber-reinforced gypsum board can be achieved.

[0027] Multiple pressure rollers are installed on the elastic cover plate with the spacing between them as small as possible. This allows the gypsum slurry in the forming tank and under the elastic cover plate to be squeezed more densely after it is received, thus expelling some water and air and making it denser. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a first embodiment of a fiber-reinforced gypsum board extrusion molding equipment according to the present invention;

[0029] Figure 2 yes Figure 1 The main view;

[0030] Figure 3 yes Figure 2 A schematic diagram of the middle part;

[0031] Figure 4 yes Figure 2 A schematic diagram showing the gypsum mixer and its components.

[0032] Figure 5 yes Figure 3 Enlarged schematic diagram of the elliptical portion;

[0033] Figure 6 yes Figure 4 Top view after removing the plaster mixer;

[0034] Figure 7 yes Figure 6 An enlarged view of the left end portion;

[0035] Figure 8 This is a schematic diagram of Embodiment 2 of the present invention;

[0036] Figure 9 yes Figure 8 A schematic diagram of the middle part;

[0037] Figure 10 yes Figure 8 Top view;

[0038] Figure 11 yes Figure 10 An enlarged view of the left end portion;

[0039] Figure 12 yes Figure 1 A diagram from another perspective;

[0040] Figure 13 This is a schematic diagram of a portion of the molding groove in Embodiment 3 of the present invention;

[0041] Figure 14 This is a schematic diagram of a portion of the molding groove in Embodiment 4 of the present invention;

[0042] Figure 15 yes Figure 14 A schematic diagram showing the internal structure of the molding groove after the elastic rubber portion has been removed;

[0043] Figure 16 yes Figure 14 Side view;

[0044] Figure 17 This is a schematic diagram of Embodiment 5 of the present invention;

[0045] Figure 18 yes Figure 17 A partially enlarged schematic diagram of the left end portion;

[0046] Figure 19 yes Figure 17 A magnified view of the central section;

[0047] Figure 20 yes Figure 19 Schematic diagram of the intermediate impeller;

[0048] Figure 21 yes Figure 17 A bottom view;

[0049] Figure 22 yes Figure 21 Schematic diagram of the intermediate impeller;

[0050] Figure 23 This is a schematic diagram of Embodiment Seven of the present invention.

[0051] In the diagram: 1. Frame; 2. Roller assembly; 3. Forming trough; 4. Drive mechanism; 5. Gear; 6. Bevel gear set; 7. Elastic cover plate; 8. Vertical plate; 9. Horizontal plate; 10. Gypsum mixer; 11. Discharge plate; 12. Discharge pipe; 13. Inclined part; 14. Horizontal part; 15. Lower horizontal plate; 16. Weighing sensor; 17. Elastic rubber part; 18. Recess; 19. Insertion hole; 20. Drive hydraulic cylinder; 21. Locking pin; 22. Vertical baffle; 23. Impeller; 24. Thick gear; 25. Washing machine. Detailed Implementation

[0052] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0053] Example 1: As Figures 1 to 7 , Figure 12 As shown (for ease of illustration), Figure 1 (A gypsum mixer is not shown). This invention is a fiber-reinforced gypsum board extrusion molding equipment, consisting of a frame 1, upper and lower rows of rollers 2 mounted on the frame, a channel-shaped forming trough 3 located above the lower rollers, and a drive mechanism 4 for rotating the rollers (the drive mechanism can be a geared motor, with a pulley fixedly mounted on the output shaft of the geared motor, a belt wound around the pulley, and a driven wheel wound around the belt on one side of the pulley. The axle of the driven wheel is fixedly connected to the axle of the bevel gears in a set of bevel gears 6, and the axle of another bevel gear is connected to the driving roller in the roller group. The other rollers in the roller group rotate synchronously through meshing gears 5 on the roller shafts, and the upper and lower rollers are also connected through meshing upper and lower gears fixedly mounted on the roller shafts to form a transmission relationship).

[0054] The lower roller group serves as a support for the conveying roller group; an elastic cover plate 7 is fixedly installed at the upper opening of the forming trough 3. The length of the elastic cover plate is less than the length of the forming trough, and the elastic cover plate is located near the slurry input end of the forming trough; a thickness-fixing slide plate is provided inside the forming trough 3, below the elastic cover plate 7, and is slidably installed with the forming trough. The thickness-fixing slide plate consists of a vertical plate 8 and a horizontal plate 9 fixedly connected to the vertical plate 8. The horizontal plate 9 is located above the vertical plate 8. The vertical plate and the horizontal plate have the same length and are consistent with the width of the forming trough (that is, the thickness-fixing slide plate covers the width of the forming trough inside the forming trough, so that the slurry delivered from the gypsum mixer 10 either pushes the thickness-fixing slide plate or overflows from above the thickness-fixing slide plate in sufficient quantity); the gypsum mixer 10 is located above the slurry input end of the forming trough 3.

[0055] The upper and lower rows of rollers on the frame constitute the extrusion roller group; when the lower roller group is not driven, it acts as the support roller group, and when the lower roller group is driven, it acts as the conveying roller group; the upper roller group acts as the shaping roller, thickness adjustment roller or compaction roller when driven; the height of the vertical plate 8 is lower than the height of the forming groove 3; the elastic cover plate 7 is made of silicone rubber, which has a certain elasticity and is easy to peel off from the gypsum slurry.

[0056] The discharge port of the gypsum mixer 10 is connected to the inclined discharge plate 11, which is located above the molding trough 3.

[0057] In this configuration, the slurry input end of the forming tank 3 is the discharge end of the discharge plate 11. With this configuration, the discharge from the gypsum mixer 10 directly generates the power to drive the thickness-fixing slide plate to move horizontally. Combined with the elastic cover plate 7 and the roller group set above the cover plate, the extrusion molding of fiber-reinforced gypsum board can be achieved. This solution uses the thickness-fixing slide plate to fix the thickness, and due to the setting of the thickness-fixing slide plate, the initial thickness of the gypsum slurry basically meets the requirements. The height of the forming tank is greater than that of the thickness-fixing slide plate, which can also meet the requirements of the initial thick laying. There is no need for the long-distance conveying equipment of the existing technology, which minimizes the conveying distance of the initial thick laying, reduces the length of the equipment, and reduces the footprint of the equipment. By using the thickness-fixing slide plate (which has a vertical plate on it, acting as a baffle), the gypsum slurry is pushed by the gypsum slurry discharged from the gypsum mixer 10. Combined with the discharge from the gypsum mixer 10 and the pressure from the elastic cover plate 7, this achieves initial thickness spreading, rapid even spreading, and proper venting. Furthermore, since the gypsum mixer 10 discharges directly into the forming tank 3 at a relatively fast speed, the thickness-fixing slide plate ensures that the gypsum slurry on the side of the forming tank 3 closest to the gypsum slurry input end reaches the thickness at the horizontal plate of the thickness-fixing slide plate, which is the final roll-forming thickness. After the thickness-fixing slide plate slides a certain distance, the sliding speed begins to decrease, and the drive mechanism 4 activates, driving the upper and lower roller sets to rotate, achieving conveying and roll forming. Due to the thickness-fixing slide plate, the initial gypsum slurry reaches the desired final thickness. Combined with the elastic cover plate 7, which is slightly higher than the thickness-fixing slide plate, this satisfies the initial thickness requirement while allowing for some fluctuation in the feeding speed. It also accelerates the even spreading speed and facilitates proper air venting (the gypsum mixer 10 directly discharges material, and the elasticity of the cover plate 7 compresses the gypsum slurry in the forming tank 3 within the cover plate 7), thus speeding up the even spreading process and eliminating the need for initial thickness spreading equipment. Water, retarder solution, hemihydrate gypsum, and fiber materials are weighed according to a set ratio. The retarder solution, water, and gypsum powder are evenly mixed into a slurry using a gypsum mixer. Then, fibers are added and mixed again. The mixed fiber / gypsum slurry is then fed into the forming tank through the outlet of the gypsum mixer and continuously rolled by rollers.

[0058] Example 2: The difference from Example 1 is that, as shown in Example 2... Figures 8 to 11 As shown, the gypsum mixer 10 has several discharge ports arranged side by side, and each discharge port is connected to the molding tank 3 through the discharge pipe 12.

[0059] In this configuration, the slurry input end of the molding tank 3 is the discharge end of the discharge pipe 12. This configuration not only avoids local accumulation or voids in the slurry, but also fully utilizes the discharge kinetic energy of the gypsum mixer 10 to achieve fixed-thickness extrusion in conjunction with the elastic cover plate 7, the thickness plate slide, and the extrusion roller group 2. Furthermore, it eliminates the need for long-distance conveying equipment required for the initial thick gypsum slurry application, thereby reducing the length of the equipment and the floor space occupied. The elastic cover plate 7 allows for some leeway when dealing with fluctuations in the feeding speed of the gypsum mixer 10. For example, if the feeding speed suddenly increases, the elastic cover plate 7 can bulge upwards appropriately to avoid an increase in the amount of slurry reaching the molding tank 3 caused by the sudden increase in feeding speed. Conversely, if the feeding speed suddenly decreases, the elastic cover plate 7 can bulge downwards appropriately to avoid the formation of slurry holes due to the deceleration of feeding speed. Therefore, this solution can allow for a certain degree of fluctuation in feeding speed, thus expanding its applicability. It can also eliminate the need for long-distance conveying equipment and reduce the equipment length (since the initial thick-lay gypsum slurry usually requires a relatively long conveying distance to ensure that the slurry is evenly distributed, initially degassed, and maintains fluidity before entering the roller press, reducing the initial thick-lay conveying distance can reduce the equipment length).

[0060] Example 3: The difference from Example 1 is that, as shown in Example 3... Figure 13 As shown, the forming groove is shaped like a "U" at any cross-section. A rigid cover plate is fixedly installed above the opening of the forming groove 3. The rigid cover plate is made of Teflon material and is fixedly connected to the elastic cover plate 7. The elastic cover plate and the rigid cover plate are arranged sequentially along the conveying direction. The rigid cover plate consists of two parts, one part is inclined and the other part is horizontal. The inclined part 13 and the horizontal part 14 are arranged sequentially along the conveying direction. The height of the forming groove 3 located at the horizontal part 14 of the rigid cover plate and the forming groove part located after the horizontal part along the conveying direction is the same as the height of the horizontal part of the rigid cover plate (so although the shape of any cross-section of the forming groove is "U", the height of the side of the forming groove at the rigid cover plate is different or not constant).

[0061] The rigid cover plate is made of Teflon material, which is easy to peel off from the gypsum slurry. A rigid cover plate is set after the elastic cover plate 7. On the one hand, it meets the initial thickness requirements and the elasticity of the elastic cover plate facilitates even spreading. On the other hand, the larger amount of slurry in the elastic cover plate is accelerated through a similar constriction, making it easier to reach the final required thickness (i.e., the height of the rigid cover plate). It is also easier to ensure that the gypsum slurry inside the plate is already "full" when the thickness-fixing slide plate slides. A small section of the rigid cover plate works in conjunction with the elastic cover plate. The thickness-fixing slide plate is pushed out by the discharge diameter of the gypsum mixer. With this setting, the discharge of the gypsum mixer, combined with the inclined discharge plate (or directly through the discharge pipe), forms the driving force for the thickness-fixing slide plate to move horizontally. Combined with the thickness-fixing of the rigid cover plate (ensuring that the initial thickness of the gypsum slurry basically meets the final required thickness), the extrusion molding of fiber-reinforced gypsum board can be achieved.

[0062] The upper roller group has several pressure rollers located above the elastic cover plate, and the spacing between adjacent pressure rollers located above the elastic cover plate is smaller than the spacing between adjacent pressure rollers located in other positions of the upper roller group.

[0063] Example 4: The difference from Example 1 is that, as shown in Example 4... Figures 14 to 16 As shown (for ease of illustration), Figure 14 (The driving hydraulic cylinder is not shown). A lower horizontal plate 15 is fixedly connected to the vertical plate 8 of the thickness-fixing slide plate. A weighing sensor 16 is installed under the lower horizontal plate (the forming groove is located on the bottom plate of the weighing sensor and protrudes downward to hold the weighing sensor). The weighing sensor is connected to a controller located outside the frame. The controller is connected to the driving hydraulic cylinder 20. A locking pin 21 is fixedly connected to the exposed end of the piston rod of the driving hydraulic cylinder. A recess 18 for inserting the locking pin 21 is provided on the side of the forming groove 3. An insertion hole 19 matching the recess is provided on the vertical plate of the thickness-fixing slide plate.

[0064] The weight of the gypsum slurry "filling" the space between the thickness plate and the lower horizontal plate is calculated based on the density of the gypsum slurry. When the weighing sensor detects that this weight has been reached, it sends a signal to the controller. The controller then controls the hydraulic cylinder to move so that the locking pin no longer presses against the thickness plate. As the gypsum mixer continues to discharge material, the thickness plate slides. This ensures that the thickness plate only slides when the thickness of the gypsum slurry on the inner side of the thickness plate (i.e., the side of the thickness plate where the vertical plate faces the input gypsum) reaches the maximum thickness of the thickness plate. This guarantees that the thickness meets the requirements in the initial stage, which can reduce the length of roller sets such as shaping rollers, thickness adjusting rollers, or compaction rollers.

[0065] A portion of the side of the molding groove is made of elastic rubber material, forming an elastic rubber part. The elastic rubber part 17 is sealed and fixedly glued to the other parts of the side of the molding groove 3. The recess 18 is provided on the elastic rubber part and corresponds to the location of the vertical plate of the thickness plate at the initial position. The insertion hole provided on the vertical plate of the thickness plate is a circular blind hole, and the locking pin is cylindrical.

[0066] The other parts of the side of the forming groove are generally made of metal.

[0067] Example 5: The difference from Example 1 is that, as shown in Example 5... Figures 17 to 22 As shown (for ease of illustration), Figure 17 Not all gears in the roller assembly are shown; only one thick gear is shown. Figure 21 (The thick gear and the roller near the impeller in the lower roller group are not shown). The structure includes a vertical baffle 22 integrally set at the end of the forming trough 3 away from the gypsum slurry input. The structure also includes an impeller 23 located below the forming trough 3. The impeller shaft is fixedly connected to a thick gear 24. The thick gear meshes with a gear on the roller shaft of one of the rollers in the lower roller group. Impellers are provided on both sides below the width direction of the forming trough (to facilitate the transmission of the impeller to the roller, a gear is fixedly connected to both ends of the roller shaft of the roller closest to the impeller in the lower roller group for meshing with the thick gear). Motion sensors are installed on the frame. The motion sensors are connected to a controller located outside the extrusion molding equipment. The controller is connected to a drive reduction motor. The drive reduction motor is fixedly connected to the frame. The output shaft of the drive reduction motor (which can use the same drive mechanism as in Embodiment 1 with a bevel gear set to drive the rotation of the lower roller group, which will not be described in detail) is fixedly connected to the roller shaft of one of the rollers in the lower roller group. Two motion sensors are provided: one for detecting whether the lower roller group is rotating and the other for detecting whether slurry is overflowing. An arc-shaped baffle plate is fixedly installed on the frame above the thick gear to prevent gypsum slurry from adhering to the thick gear; the impeller surface is coated with Teflon (to prevent gypsum slurry from solidifying on the impeller).

[0068] The thickness of the forming trough is roughly the same as, or slightly larger than, the final product thickness, by about 20-25%. This way, if it overflows, the forming trough moves, and after appropriate roller pressing, the product is formed, effectively reducing the initial thickness and shortening the roller pressing process. If it doesn't overflow, it means the slurry thickness hasn't reached the set thickness; in this case, the lower roller group (i.e., the conveying rollers) doesn't operate. Overflow indicates the slurry thickness has reached the set thickness. The overflowing slurry falls onto the impeller, pushing it. The impeller drives the thick gear, which in turn drives the rollers of the lower roller group to rotate, thus conveying the forming trough. During this conveying process, the upper roller... The roller assembly also serves as an extrusion molding unit. When the sensor detects that the lower roller assembly is not running but there is still slurry overflowing (indicating that the impeller's push due to the extrusion of the upper roller assembly is no longer able to drive the lower roller assembly to continue rotating; since the shaping roller, thickness adjustment roller, or compaction roller are basically located in the middle and rear of the conveying direction, the impeller can drive the rollers of the lower roller assembly to rotate at the beginning, but when the forming groove reaches the shaping roller, thickness adjustment roller, or compaction roller, it may be under pressure and the rollers of the lower roller assembly cannot be driven by the impeller alone), the controller controls the drive reduction motor to drive the lower roller assembly to rotate.

[0069] One motion sensor is either an accelerometer fixed to the frame or a rotary encoder mounted on the roller shaft of the lower roller assembly. The other motion sensor is a photoelectric sensor fixed to the frame and located at the height between the impeller and the forming trough.

[0070] An accelerometer is used to detect the vibration of the conveyor roller itself (indirectly determining whether the upper forming trough has moved); a rotary encoder detects whether the lower roller group is rotating.

[0071] Example 6: The difference from Example 5 is that a gypsum slurry recovery tank is installed under the impeller, and the recovery tank is connected to the gypsum mixer through a material pump;

[0072] Because the gypsum slurry overflowing from the impeller is immediately recovered and returned to the gypsum mixer, the time is relatively short, generally less than 10 minutes after discharge from the mixer. Gypsum slurry discharged from the mixer within 10 minutes is basically unset slurry, still retaining fluidity and showing no obvious signs of hardening, and can be recovered promptly. For gypsum slurry that has hardened to some extent and exceeded 10 minutes, a small amount of water (0.5%~1%) and dispersant are added and stirred to reactivate it and restore some fluidity, which can also be recycled and reused (for example, if it is not immediately returned to the gypsum mixer after recovery, it is pumped into other containers such as a recovery tank, and then water and / or dispersant are added to the gypsum slurry in the recovery tank for reuse; the pump is connected to two pipes, one connected to the gypsum mixer and the other connected to the recovery tank; each pipe is equipped with an on / off valve, if direct reuse is allowed, the on / off valve on the pipe leading to the gypsum mixer is opened, otherwise the aforementioned on / off valve is closed and the on / off valve on the pipe leading to the recovery tank is opened).

[0073] Example 7: The difference from Example 5 is that, as Figure 23 As shown, a motion sensor is installed on the frame. The motion sensor is connected to a controller located outside the extrusion molding equipment. The controller is connected to a washing machine 25. The washing machine is fixedly connected to the frame. Driving the washing machine to start it causes the nozzle of the washing machine to impact the impeller 23.

[0074] Using continuously running shaping rollers, thickness adjusting rollers, or compaction rollers, when the sensor detects that the lower roller group is not running but slurry is still overflowing (compared to Example 5, the drive geared motor is removed and replaced by a flushing machine), the controller controls the flushing machine 25 to impact the impeller 23, and the impeller continues to rotate. On the one hand, the continued rotation of the impeller can, to some extent, prevent the gypsum slurry accumulated on the impeller from solidifying (because this maintains the continuous flow of the slurry and avoids long-term stagnation), and the rotation of the impeller also causes the lower roller group to continue rotating, which, together with the upper roller group, allows the conveying of the forming tank to continue. On the other hand, the flushing machine washes the impeller, making it difficult for gypsum slurry to accumulate and solidify on the impeller surface. Through a single control action, the conveying of the forming tank is achieved, and the solidification of gypsum slurry accumulated on the impeller is prevented. When the lower roller group is not running due to the pressure of the shaping rollers, thickness adjusting rollers, or compaction rollers, it continues to run by the power of the flushing machine (the flushing pressure of the flushing machine is calculated and tested in advance, and the speed of the lower roller group can be basically met by operating at the set pressure).

[0075] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A fiber-reinforced gypsum board extrusion molding equipment, characterized in that, It consists of a frame, a row of upper and lower rollers mounted on the frame, a forming groove located above the lower roller group, and a drive mechanism that drives the roller group to rotate. The lower roller assembly supports the conveyor roller assembly; the forming trough and / or the frame are equipped with structures to reduce the length of the equipment; The structure includes an elastic cover plate fixedly installed on the upper opening of the forming tank. The length of the elastic cover plate is less than the length of the forming tank. The elastic cover plate is located near the slurry input end of the forming tank. Inside the forming tank, below the elastic cover plate, there is a thickness-fixing slide plate that slides with the forming tank. The thickness-fixing slide plate consists of a vertical plate and a horizontal plate fixedly connected to the vertical plate. The horizontal plate is located above the vertical plate. The vertical plate and the horizontal plate have the same length and are consistent with the width of the forming tank. A gypsum mixer is located above the slurry input end of the forming tank. The forming tank is in the shape of a channel steel. A rigid cover plate is also fixedly installed above the opening of the forming tank. The rigid cover plate is made of Teflon material. The rigid cover plate is fixedly connected to the elastic cover plate, and the two sections are arranged sequentially along the conveying direction: the elastic cover plate and the rigid cover plate. The rigid cover plate consists of two parts: one part is inclined and the other part is horizontal. The height of the forming tank section located at the horizontal section of the rigid cover plate and the section of the forming tank located after the horizontal section along the conveying direction are the same as the height of the horizontal section of the rigid cover plate.

2. The fiber-reinforced gypsum board extrusion molding equipment according to claim 1, characterized in that, The discharge port of the gypsum mixer is connected to an inclined discharge plate, which is located above the forming trough.

3. The fiber-reinforced gypsum board extrusion molding equipment according to claim 1, characterized in that, The gypsum mixer has several discharge ports arranged side by side, and each discharge port is connected to the molding tank through a discharge pipe.

4. The fiber-reinforced gypsum board extrusion molding equipment according to claim 1, characterized in that, The upper roller group has several pressure rollers located above the elastic cover plate, and the spacing between adjacent pressure rollers located above the elastic cover plate is smaller than the spacing between adjacent pressure rollers located in other positions of the upper roller group.

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