Fiber reinforced gypsum board extrusion forming equipment

Abstract

The invention discloses extrusion forming equipment for a fiber reinforced gypsum board. The extrusion forming equipment is composed of a rack, a row of upper and lower roller sets arranged on the rack, a forming groove located above the lower roller set and a driving mechanism for driving the roller sets to rotate. The lower roller group is a supporting and conveying roller group; and an equipment length reducing structure is arranged on the forming groove and / or the rack. The device can be used for continuously producing the fiber reinforced gypsum board. Long-distance conveying equipment in the prior art is not needed, the conveying distance of the initial thick pavement is reduced to the maximum extent, the length of the equipment can be reduced, and the occupied area of the equipment is reduced. And a certain degree of blanking speed fluctuation can be allowed, and the applicability is expanded to a certain degree. The requirement for initial thick laying is met, even laying is facilitated, the final needed thickness is easy to achieve, it is convenient to achieve that the thickness of gypsum slurry basically meets the final needed thickness at the beginning, and extrusion forming of the fiber-reinforced gypsum board can be achieved.

Description

Technical Field

[0001] The invention relates to special equipment for producing energy-saving building materials, in particular to fiber-reinforced gypsum board extrusion molding equipment. Background Art

[0002] In interior decoration, gypsum board, as both a base and finishing material, offers 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, such as ceiling finishes, lightweight partitions, and partition finishes. Commonly used gypsum boards in interior decoration include paper-faced gypsum board and fiber-reinforced gypsum board.

[0003] Patent publication number CN209466393U: An extrusion molding machine for producing high-temperature-resistant fiber-reinforced gypsum board. Its structure includes a bottom shell, a pressure groove, side panels, a control box, a power switch, an up switch, a down switch, a circuit board, a single-chip microcomputer, a top shell, a hydraulic cylinder, an oil tank, a conduit, a hydraulic pump, a pressure plate, a power cord, and an ejection device. To address the problem of inconvenient and low production efficiency caused by the inability to quickly and easily remove the extruded gypsum board, an ejection device is installed inside the bottom shell. By rotating the handle, a connecting rod drives the worm to rotate. The rotation of the worm drives the turbine, which in turn drives the threaded sleeve. The rotation of the threaded sleeve causes the screw to slide up and down along the threaded sleeve, thereby driving the ejection plate to eject the gypsum board, achieving the effect of quickly removing the gypsum board and improving production efficiency. However, it cannot continuously produce fiber-reinforced gypsum board and is inefficient. In his paper, "Research and Application of Wood Fiber Reinforced Gypsum Board Production Line Equipment," published in the eighth issue of Modern Manufacturing Technology and Equipment in 2016, Sun Jinyu noted that ① a belt conveyor feeds the mixed material to ② a small silo, where ③ a material output controller controls the output of the mixed material. While the material output controller maintains a constant feed rate, a material distributor is installed for the next process step. This distributor serves two purposes: first, controlling the uniformity of the mixed material; second, reducing the mixed material into a spherical state. However, as with other existing technologies, such as gypsum board roller formers, a distribution system is required to ensure uniform gypsum distribution. Currently, the conveying equipment required for the initial thick gypsum slurry spread is very long, making the entire equipment too long. Furthermore, the number of rollers required in the roller group is also high. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a fiber reinforced gypsum board extrusion molding device capable of continuously producing fiber reinforced gypsum boards.

[0005] To achieve the above-mentioned object, the technical solution of the present invention is to design a fiber-reinforced gypsum board extrusion molding equipment, which is composed of a frame, a row of upper and lower roller groups arranged on the frame, a molding trough located above the lower roller group, and a driving mechanism for driving the roller group to rotate; The lower roller assembly supports the conveyor roller assembly. A length-reducing mechanism is installed on the forming trough and / or the machine frame. Continuous rolling enables continuous production of fiber-reinforced gypsum board. This shortens the machine length and reduces its footprint.

[0006] A further technical solution is that the structure includes an elastic cover plate fixedly mounted on the upper notch of the forming trough; the elastic cover plate is shorter than the length of the forming trough and is positioned near the slurry input end of the forming trough; a thickness-setting slide plate is provided within the forming trough and below the elastic cover plate, slidingly mounted with the forming trough. The slide plate consists of a vertical plate and a horizontal plate fixedly connected to the vertical plate, the horizontal plate being positioned above the vertical plate, the vertical and horizontal plates being of the same length and consistent with the width of the forming trough; a gypsum mixer is positioned above the slurry input end of the forming trough. The forming trough is in the shape of a channel steel. The elastic cover plate is positioned near the slurry input end of the forming trough to prevent slurry from overflowing when entering the trough.

[0007] A further technical solution is that the discharge port of the gypsum mixer is connected to an inclined discharge plate, and the discharge plate is located above the forming trough.

[0008] After such arrangement, the power for driving the thickness-fixing slide to move horizontally is directly generated by the discharge of the gypsum mixer. Combined with the cover plate and the roller group arranged above the cover plate, the extrusion molding of the fiber-reinforced gypsum board can be realized. The thickness is determined by the thickness-fixing slide, and due to the setting of the thickness-fixing slide, the thickness of the gypsum slurry at the beginning basically meets the requirements. The height of the forming groove is greater than the thickness-fixing slide, which can meet the requirements of the initial thick paving. There is no need for long-distance conveying equipment like the prior art, which maximizes the reduction of the conveying distance of the initial thick paving, can reduce the length of the equipment, and reduce the equipment's footprint. By setting the thickness-fixing slide (since a vertical plate is set on the thickness-fixing slide, which is equivalent to a baffle), the gypsum slurry discharged from the gypsum mixer slides under the push of the gypsum mixer, and cooperates with the discharge of the gypsum mixer and the pressure of the elastic cover plate to meet the initial thick spreading on the one hand, and complete the rapid and uniform spreading and proper exhaust on the other hand; in addition, since the gypsum mixer directly discharges the material to the forming trough and the discharge speed is fast, so the thickness-fixing slide can basically ensure that the thickness-fixing slide is already in the forming trough when it slides. The gypsum slurry on the side of the thickness-fixing slide close to the gypsum slurry input end reaches the thickness of the horizontal plate of the thickness-fixing slide, which is also the final roller-formed thickness. Due to the setting of the fixed thickness slide, the gypsum slurry basically reaches the final desired thickness at the beginning. Combined with the setting of the elastic cover plate which is slightly higher than the fixed thickness slide, it can meet the need of initial thick paving on the one hand, and allow a certain degree of fluctuation in the feeding speed on the other hand. In addition, it can accelerate the speed of uniform paving and proper exhaust (the gypsum mixer directly discharges the material and the elasticity of the elastic cover plate squeezes the gypsum slurry in the forming groove inside the elastic cover plate), which speeds up the process of uniform paving, thus eliminating the need for initial thick paving equipment.

[0009] Another technical solution is that the gypsum mixer is provided with a plurality of discharge ports, and the plurality of discharge ports are arranged side by side, and each discharge port is connected to the forming tank through a discharge pipe.

[0010] This arrangement not only prevents localized accumulation or voids in the slurry, but also fully utilizes the kinetic energy of the gypsum mixer's discharge, combining the elastic cover, thickness-fixing slide, and extrusion roller assembly to achieve constant-thickness extrusion. It also eliminates the long-distance conveying equipment required for the initial thick layer of gypsum slurry, reducing the length and footprint of the equipment. The elastic cover allows for a certain margin when the gypsum mixer's discharge speed fluctuates. For example, if the discharge speed suddenly increases, the elastic cover can bulge upward to prevent an increase in the amount of slurry reaching the sizing trough due to a sudden increase in discharge speed. If the discharge speed suddenly decreases, the elastic cover can bulge downward to prevent the formation of slurry holes caused by a deceleration in discharge. Therefore, this solution can tolerate a certain degree of discharge speed fluctuation, expanding its applicability. It can also eliminate long-distance conveying equipment, reducing equipment length. (Since the initial thick layer of gypsum slurry typically requires a long conveying distance to ensure that the slurry is evenly distributed, initially degassed, and maintains fluidity before entering the roller press, reducing the conveying distance for the initial thick layer can reduce equipment length.)

[0011] A further technical solution is that a hard cover plate is fixed above the groove of the forming groove, and the hard cover plate is made of Teflon material. The hard cover plate is fixedly connected to the elastic cover plate and is sequentially arranged in the conveying direction as an elastic cover plate and a hard cover plate; the hard cover plate is composed of two parts, one part is inclined and the other part is horizontally arranged and is sequentially arranged in the conveying direction as an inclined part and a horizontal part. The height of the forming groove located at the horizontal part of the hard cover plate and the forming groove part located behind the horizontal part along the conveying direction is the same as the height of the horizontal part of the hard cover plate.

[0012] The rigid cover plate is made of Teflon material, which is easy to peel off from the gypsum slurry. A rigid cover plate is also set behind the elastic cover plate. On the one hand, it meets the need of initial thick laying and facilitates uniform laying with the elasticity of the elastic cover plate. On the other hand, the slurry in the elastic cover plate is accelerated through a similar shrinkage, which makes it easier to reach the final required thickness (that is, the height of the rigid cover plate) and easier to achieve the gypsum slurry on the inside when the thickness-fixing slide plate slides. A small section of the rigid cover plate cooperates with the elastic cover plate. The thickness-fixing slide plate is pushed out by the discharge diameter of the gypsum mixer. After this arrangement, the power to drive the thickness-fixing slide plate to move horizontally is directly generated through the discharge of the gypsum mixer and the inclined discharge plate (or directly through the discharge pipe). Combined with the thickness fixing of the rigid cover plate (to achieve the initial gypsum slurry thickness basically meeting the final required thickness), the extrusion molding of the fiber-reinforced gypsum board can be achieved. The upper roller group is provided with a plurality of pressing rollers located above the elastic cover plate, and the spacing between adjacent pressing rollers located above the elastic cover plate is smaller than the spacing between adjacent pressing rollers located at other positions of the upper roller group.

[0013] A plurality of pressing rollers are arranged on the elastic cover plate, and the spacing between the pressing rollers is as small as possible, so that after the gypsum slurry is received in the forming trough, the gypsum slurry in the forming trough and under the elastic cover plate can be squeezed more densely to discharge some moisture and air and densify the gypsum slurry at the same time; A lower horizontal plate is fixedly connected to the vertical plate of the thickness-setting slide, and a weighing sensor is arranged under the lower horizontal plate. The weighing sensor is connected to the controller signal arranged outside the frame, and the controller is connected to the signal of the driving hydraulic cylinder. The exposed end of the piston rod of the driving hydraulic cylinder is fixedly connected to a locking pin, and a recess for inserting the locking pin is provided on the side of the forming groove, and a socket matching the recess is provided on the vertical plate of the thickness-setting slide.

[0014] The thickness setting slide will only slide when the gypsum slurry thickness on the inner side of the thickness setting slide (that is, the side of the vertical plate of the thickness setting slide facing the gypsum input) reaches the maximum thickness of the thickness setting slide, ensuring that the thickness meets the requirements in the initial stage. This can reduce the length of the roller group such as the shaping roller, thickness adjustment roller or compacting roller.

[0015] A part of the side of the forming groove is made of elastic rubber material, which is the elastic rubber part. The elastic rubber part is sealed and glued to the other parts of the side of the forming groove. The recess is arranged on the elastic rubber part and corresponds to the location of the vertical plate of the thickness-setting slide in the initial position. The socket arranged on the vertical plate of the thickness-setting slide is a circular blind hole, and the locking pin is cylindrical.

[0016] The rest of the sides of the forming tank are generally made of metal; The structure includes a vertical baffle integrally arranged at one end of the forming trough away from the gypsum slurry input, and the structure also includes an impeller located below the forming trough, the wheel shaft of the impeller is fixedly connected to the roller shaft of a roller of the lower roller group, and impellers are provided below both sides in the width direction of the forming trough; a motion sensor is provided on the frame, the motion sensor is connected to the controller signal located outside the extrusion molding equipment, the controller is connected to the drive reduction motor signal, the drive reduction motor is fixedly connected to the frame, and the output shaft of the drive reduction motor is fixedly connected to the roller shaft of a roller of the lower roller group.

[0017] The existing technologies all prevent the gypsum slurry from overflowing from both sides during the process of entering the molding equipment. This embodiment adopts reverse thinking. Instead of preventing overflow, it utilizes overflow and uses the overflowed slurry as the driving force of the conveying roller. No overflow indicates that the slurry thickness has not reached the set thickness. At this time, the lower roller group, that is, the conveying roller, is not running. Overflow indicates that the slurry thickness has reached the set thickness. The overflowed slurry falls on the impeller and pushes the impeller. The impeller drives the rollers of the lower roller group to rotate to realize the conveying of the molding trough. During the conveying process, the upper roller group plays the role of extrusion molding. When the sensor detects that the lower roller group is not running and slurry is still overflowing, (This indicates that due to the extrusion effect of the upper roller group, the impeller can no longer drive the lower roller group to continue rotating). 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 is only started when the lower roller group stops rotating due to the pressure of the rollers of the upper roller group. The energy consumption is low, and the running time is short, so the service life of the drive reduction motor is also extended. Therefore, when conveying the molding trough, this embodiment indicates that the gypsum slurry in the molding trough has reached the set thickness. Therefore, the subsequent extrusion molding process can reduce the number of rollers in the upper roller group and reduce the length of the equipment.

[0018] The motion sensor is an acceleration sensor fixedly connected to the frame or a rotary encoder installed on the roller shaft of the lower roller group.

[0019] The acceleration sensor is used to detect the vibration of the conveyor roller itself (indirectly judging whether the upper forming trough is moving); the rotary encoder detects whether the rollers of the lower roller group are rotating; The advantages and beneficial effects of the present invention are: the power for driving the thickness-fixing slide to move horizontally is directly generated by the discharge of the gypsum mixer, and the cover plate is combined with the roller group arranged above the cover plate to realize the extrusion molding of the fiber-reinforced gypsum board. The present invention determines the thickness by the thickness-fixing slide, and due to the setting of the thickness-fixing slide, the thickness of the gypsum slurry at the beginning basically meets the requirements, and the height of the forming groove is greater than the thickness-fixing slide, which can meet the requirements of the initial thick paving; there is no need for the long-distance conveying equipment of the prior art, and the conveying distance of the initial thick paving is minimized to the maximum extent, which can reduce the length of the equipment and reduce the equipment's footprint. By setting the thickness-fixing slide (since a vertical plate is set on the thickness-fixing slide, which is equivalent to a baffle), the gypsum slurry discharged from the gypsum mixer slides under the push of the gypsum mixer, and cooperates with the discharge of the gypsum mixer and the pressure of the elastic cover plate to meet the initial thick spreading on the one hand, and complete the rapid and uniform spreading and proper exhaust on the other hand; in addition, since the gypsum mixer directly discharges the material to the forming trough and the discharge speed is fast, so the thickness-fixing slide can basically ensure that the thickness-fixing slide is already in the forming trough when it slides. The gypsum slurry on the side of the thickness-fixing slide close to the gypsum slurry input end reaches the thickness of the horizontal plate of the thickness-fixing slide, which is also the final roller-formed thickness. Due to the setting of the fixed thickness slide, the gypsum slurry basically reaches the final desired thickness at the beginning. Combined with the setting of the elastic cover plate which is slightly higher than the fixed thickness slide, it can meet the need of initial thick paving on the one hand, and allow a certain degree of fluctuation in the feeding speed on the other hand. In addition, it can accelerate the speed of uniform paving and proper exhaust (the gypsum mixer directly discharges the material and the elasticity of the elastic cover plate squeezes the gypsum slurry in the forming groove inside the elastic cover plate), which speeds up the process of uniform paving, thus eliminating the need for initial thick paving equipment.

[0020] This solution not only avoids localized accumulation or voids in the slurry, but also fully utilizes the kinetic energy of the gypsum mixer's discharge, combining with the elastic cover, fixed-thickness slide, and extrusion roller assembly to achieve constant-thickness extrusion. It also eliminates the long-distance conveying equipment required for the initial thick layer of gypsum slurry, reducing the length of the equipment and its footprint. The elastic cover allows for a certain margin when the gypsum mixer's discharge speed fluctuates. For example, if the discharge speed suddenly increases, the elastic cover can bulge upward to prevent an increase in the amount of slurry reaching the sizing trough due to a sudden increase in discharge speed. If the discharge speed suddenly decreases, the elastic cover can bulge downward to prevent the formation of slurry holes caused by a deceleration in discharge. Therefore, this solution can tolerate a certain degree of discharge speed fluctuation, expanding its applicability. It can also eliminate long-distance conveying equipment and reduce equipment length. (Since the initial thick layer of gypsum slurry usually requires a long distance of conveying equipment to ensure that the slurry is evenly distributed, initially degassed, and maintains fluidity before entering the roller press, reducing the conveying distance for the initial thick layer can reduce equipment length.)

[0021] The rigid cover plate is made of Teflon material, which is easy to peel off from the gypsum slurry. A rigid cover plate is also set behind the elastic cover plate. On the one hand, it meets the need of initial thick laying and facilitates uniform laying with the elasticity of the elastic cover plate. On the other hand, the slurry in the elastic cover plate is accelerated through a similar shrinkage, which makes it easier to reach the final required thickness (that is, the height of the rigid cover plate) and easier to achieve the gypsum slurry on the inside when the thickness-fixing slide plate slides. A small section of the rigid cover plate cooperates with the elastic cover plate. The thickness-fixing slide plate is pushed out by the discharge diameter of the gypsum mixer. After this arrangement, the power to drive the thickness-fixing slide plate to move horizontally is directly generated through the discharge of the gypsum mixer and the inclined discharge plate (or directly through the discharge pipe). Combined with the thickness fixing of the rigid cover plate (to achieve the initial gypsum slurry thickness basically meeting the final required thickness), the extrusion molding of the fiber-reinforced gypsum board can be achieved. Multiple pressing rollers are set on the elastic cover plate and the distance between the pressing rollers is as small as possible. In this way, after the forming trough receives the gypsum slurry, the gypsum slurry in the forming trough and under the elastic cover plate can be squeezed more densely to discharge some moisture and air and densify it at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a fiber reinforced gypsum board extrusion molding device according to a first embodiment of the present invention; Figure 2 yes Figure 1 The main view; Figure 3 yes Figure 2 A schematic diagram of the middle part of Figure 4 yes Figure 2 Exploded diagram of the gypsum mixer and other parts; Figure 5 yes Figure 3 An enlarged schematic diagram of the middle oval portion; Figure 6 yes Figure 4 A top view after removing the gypsum mixer; Figure 7 yes Figure 6 An enlarged schematic diagram of the left end portion of ; Figure 8 is a schematic diagram of a second embodiment of the present invention; Figure 9 yes Figure 8 A schematic diagram of the middle part of Figure 10 yes Figure 8 A top view of Figure 11 yes Figure 10 An enlarged schematic diagram of the left end portion of ; Figure 12 yes Figure 1Schematic diagram from another perspective; Figure 13 This is a schematic structural diagram of a portion of the forming tank in the third embodiment of the present invention; Figure 14 This is a schematic structural diagram of a portion of a forming tank in a fourth embodiment of the present invention; Figure 15 yes Figure 14 A schematic diagram showing the internal structure of the molding groove after removing the elastic rubber part; Figure 16 yes Figure 14 Side view of; Figure 17 is a schematic diagram of a fifth embodiment of the present invention; Figure 18 yes Figure 17 A partial enlarged schematic diagram of the left end portion; Figure 19 yes Figure 17 A partial enlarged schematic diagram of the middle part; Figure 20 yes Figure 19 Schematic diagram of the impeller; Figure 21 yes Figure 17 Bottom view of Figure 22 yes Figure 21 Schematic diagram of the impeller; Figure 23 It is a schematic diagram of embodiment 7 of the present invention.

[0023] In the figure: 1. Frame; 2. Roller group; 3. Forming trough; 4. Driving mechanism; 5. Gear; 6. Bevel gear group; 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. Depression; 19. Socket; 20. Driving hydraulic cylinder; 21. Locking pin; 22. Vertical baffle; 23. Impeller; 24. Thick gear; 25. Flushing machine. DETAILED DESCRIPTION

[0024] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0025] Example 1: Figures 1 to 7 、 Figure 12 As shown (for ease of illustration, Figure 1(The gypsum mixer is not shown). The present invention is a fiber-reinforced gypsum board extrusion molding equipment, comprising a frame 1, a roller group 2 arranged in an upper and lower row on the frame, a channel-shaped molding trough 3 located above the lower roller group, and a drive mechanism 4 for driving the roller group to rotate (the drive mechanism may be a reduction motor, a pulley fixedly provided on the output shaft of the reduction motor, a belt wound around the pulley, a driven wheel wound around the belt on one side of the pulley inside the belt, the axle of the driven wheel being fixedly connected to the axle of a bevel gear of a bevel gear group 6, the axle of another bevel gear being connected to a driving roller in the roller group, the other rollers in the roller group being meshed with gears 5 on the roller shafts to rotate synchronously, and the upper and lower rollers are also meshed with upper and lower gears fixed on the roller shafts to form a transmission relationship). The lower roller group is a supporting and conveying roller group; an elastic cover plate 7 is fixedly provided on the upper notch 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 provided near the slurry input end of the forming trough; a thickness-fixing slide plate is provided in the forming trough 3 and under the elastic cover plate 7, which is slidably arranged with the forming trough. The thickness-fixing slide plate is composed 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 lengths of the vertical and horizontal plates are the same and consistent with the width of the forming trough (that is, the thickness-fixing slide plate covers the width of the forming trough in the forming trough, so that the slurry sent from the gypsum mixer 10 either pushes the thickness-fixing slide plate or overflows from above the thickness-fixing slide plate if the amount is large enough); the gypsum mixer 10 is provided above the slurry input end of the forming trough 3.

[0026] The upper and lower rows of roller groups arranged on the frame constitute an extrusion roller group; when the lower roller group is not driven, it acts as a support roller group, and when the lower roller group is driven, it acts as a conveying roller group; when the upper roller group is driven, it acts as a shaping roller, thickness adjustment roller or compaction roller; 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, has a certain elasticity and is easy to peel off from the gypsum slurry.

[0027] The discharge port of the gypsum mixer 10 is connected to an inclined discharge plate 11 , which is located above the forming trough 3 .

[0028] In this case, the slurry input end of the forming trough 3 is the discharge end of the discharge plate 11; after such an arrangement, the discharge of the gypsum mixer 10 directly forms the power to drive the thickness-fixing slide plate to move horizontally, and the elastic cover plate 7 is combined with the roller group arranged above the cover plate to realize the extrusion molding of the fiber-reinforced gypsum board. The present solution determines the thickness through the thickness-fixing slide plate, and due to the setting of the thickness-fixing slide plate, the thickness of the gypsum slurry at the beginning basically meets the requirements, and the height of the forming trough is greater than the thickness-fixing slide plate, which can meet the requirements of the initial thick paving; there is no need for the long-distance conveying equipment of the prior art, and the conveying distance of the initial thick paving is minimized to the maximum extent, which can reduce the length of the equipment and reduce the equipment footprint. By setting the thickness-setting slide (since a vertical plate is set on the thickness-setting slide, which is equivalent to a baffle), the gypsum slurry is pushed by the gypsum mixer 10 and slides in conjunction with the discharge of the gypsum mixer 10 and the pressure of the elastic cover plate 7. On the one hand, it satisfies the initial thick spreading, and on the other hand, it completes rapid and uniform spreading and proper exhaust. In addition, since the gypsum mixer 10 directly discharges the material into the forming trough 3, the discharge speed is relatively fast. Therefore, the thickness-setting slide can basically ensure that the gypsum slurry on the side of the thickness-setting slide close to the gypsum slurry input end of the forming trough 3 when the thickness-setting slide slides. The thickness reaches the thickness of the horizontal plate of the thickness-setting slide, which is also the final roller-formed thickness. When the thickness-setting slide slides for a certain distance, the sliding speed begins to decrease, and the drive mechanism 4 drives the upper and lower rows of rollers to start rotating, realizing transportation and roller shaping. Due to the provision of the thickness-setting slide, the initial gypsum slurry essentially reaches the desired final thickness. Combined with the provision of an elastic cover plate 7 slightly higher than the thickness-setting slide, this not only meets the need for initial thick paving, but also allows for a certain degree of fluctuation in the material discharge rate. Furthermore, it accelerates the uniform paving process and allows for proper exhaust (the gypsum mixer 10 directly discharges the material, and the elasticity of the elastic cover plate 7 squeezes the gypsum slurry within the forming trough 3 within the elastic cover plate 7). This speeds up the uniform paving process, eliminating the need for initial thick paving equipment. Water, retarder solution, hemihydrate gypsum, and fiber material are weighed according to the set ratio. The retarder solution, water, and gypsum powder are uniformly mixed into a slurry using a gypsum mixer. Fiber is then added and stirred. The mixed fiber / gypsum slurry is then fed into the forming trough through the gypsum mixer's discharge port and continuously rolled into shape by a roller group.

[0029] Example 2: The difference from Example 1 is that Figures 8 to 11 As shown, the gypsum mixer 10 is provided with a plurality of discharge ports, and the plurality of discharge ports are arranged side by side, and each discharge port is connected to the forming tank 3 through a discharge pipe 12 .

[0030] In this case, the slurry input end of the forming groove 3 is the discharge end of the discharge pipe 12. After such a setting, it can not only avoid local accumulation or voids of the slurry, but also make full use of the discharge kinetic energy of the gypsum mixer 10 to cooperate with the elastic cover plate 7, the thickness-fixed slide plate, and the extrusion roller set 2 to achieve thickness-fixed extrusion. Moreover, the long-distance conveying equipment required for initially thickly laying the gypsum slurry is eliminated, which can reduce the length of the equipment and the floor area occupied by the equipment. The elastic cover plate 7 has a certain margin when facing the fluctuation of the feeding speed of the gypsum mixer 10. For example, when the feeding speed suddenly increases, the elastic cover plate 7 can bulge upward appropriately to avoid an increase in the amount of slurry reaching the shaping groove 3 caused by the sudden increase in the feeding speed. If the feeding speed suddenly decreases, the elastic cover plate 7 can bulge downward appropriately, and it can also avoid the situation of slurry holes caused by the feeding deceleration. Therefore, this solution can allow a certain degree of fluctuation in the feeding speed, its applicability is extended to a certain extent, and the long-distance conveying equipment can also be eliminated, reducing the equipment length (since initially thickly laying the gypsum slurry usually requires a long-distance conveying equipment to ensure that the slurry can be evenly distributed, initially exhaust, and maintain fluidity before entering the roll press. Therefore, reducing the conveying distance of the initial thick laying can reduce the equipment length).

[0031] Embodiment 3: The difference from Embodiment 1 is that, as Figure 13 shown, the shape of the forming groove in any cross-section is in a "U" shape; a rigid cover plate is fixedly arranged above the notch of the forming groove 3. The rigid cover plate is made of Teflon material. The rigid cover plate is fixedly connected to the elastic cover plate 7 and is the elastic cover plate 7 and the rigid cover plate in sequence along the conveying direction; the rigid cover plate is composed of two parts, one part is inclined and the other part is horizontal, and they are the inclined part 13 and the horizontal part 14 in sequence 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 behind 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 in a "U" shape, the height of the side surface of the forming groove changes at the rigid cover plate or is not always constant).

[0032] The rigid cover plate is made of Teflon material, which is easy to peel off from the gypsum slurry. A rigid cover plate is also provided behind the elastic cover plate 7. On the one hand, it meets the need for initial thick paving, and the elasticity of the elastic cover plate facilitates uniform paving. On the other hand, the slurry in the elastic cover plate is accelerated through a similar necking, which makes it easier to reach the final required thickness (that is, the height of the rigid cover plate), and it is easier to achieve the gypsum slurry on the inside when the thickness-fixing slide plate slides. The gypsum slurry on the inside is already "full"; a small section of the rigid cover plate cooperates with the elastic cover plate; the thickness-fixing slide plate is pushed out by the discharge diameter of the gypsum mixer. After such a setting, the power to drive the thickness-fixing slide plate to move horizontally is directly generated by the discharge of the gypsum mixer and the inclined discharge plate (or directly through the discharge pipe). Combined with the thickness setting of the rigid cover plate (to achieve the initial gypsum slurry thickness basically meets the final required thickness), the extrusion molding of the fiber-reinforced gypsum board can be achieved. The upper roller group is provided with a plurality of pressing rollers located above the elastic cover plate, and the spacing between adjacent pressing rollers located above the elastic cover plate is smaller than the spacing between adjacent pressing rollers located at other positions of the upper roller group.

[0033] Example 4: The difference from Example 1 is that 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-setting slide, and a weighing sensor 16 is arranged under the lower horizontal plate (the molding groove is located at the bottom plate part of the weighing sensor and protrudes downward to hold the weighing sensor), the weighing sensor is connected to the controller signal arranged outside the frame, and the controller is connected to the driving hydraulic cylinder 20 signal, the exposed end of the piston rod of the driving hydraulic cylinder is fixedly connected to the locking pin 21, the side of the molding groove 3 is provided with a recess 18 for inserting the locking pin 21, and a socket 19 matching the recess is provided on the vertical plate of the thickness-setting slide.

[0034] The weight of the gypsum slurry "filled" between the fixed thickness slide and the lower horizontal plate is calculated according to the density of the gypsum slurry. When the weighing sensor detects that this weight is reached, it sends a signal to the controller. The controller controls the hydraulic cylinder to move so that the locking pin no longer presses against the fixed thickness slide. The fixed thickness slide slides due to the continued discharge of the gypsum mixer. The fixed thickness slide slides only when the gypsum slurry thickness on the inner side of the fixed thickness slide (that is, the side of the vertical plate of the fixed thickness slide facing the input gypsum) reaches the maximum thickness of the fixed thickness slide, ensuring that the thickness in the initial stage meets the requirements. This can reduce the length of the roller group such as the shaping roller, thickness adjustment roller or compacting roller.

[0035] A portion of the side surface of the forming groove is made of elastic rubber material, which is an elastic rubber portion. The elastic rubber portion 17 is sealed and fixedly glued to the other portions of the side surface of the forming groove 3. The recess 18 is provided on the elastic rubber portion and corresponds to the location of the vertical plate of the thickness-setting slide in the initial position. The socket provided on the vertical plate of the thickness-setting slide is in the shape of a circular blind hole, and the locking pin is cylindrical.

[0036] The other parts of the side of the forming groove are generally made of metal.

[0037] Example 5: The difference from Example 1 is that Figures 17 to 22 As shown (for ease of illustration, Figure 17 Not all gears in the roller set are shown, and only one thick gear is shown; Figure 21 The thick gear and the rollers in the lower roller group near the impeller are not shown. The structure includes a vertical baffle 22 integrally provided 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's shaft is fixedly connected to a thick gear 24, which meshes with a gear on the roller shaft of one of the rollers in the lower roller group. Impellers are provided below both sides of the forming trough in the width direction. (To facilitate the transmission of the impeller to the rollers, a gear is fixedly connected to each end of the roller shaft of the roller in the lower roller group closest to the impeller for meshing with the thick gear.) A motion sensor is provided on the frame. The motion sensor is connected to the signal of a controller located outside the extrusion molding equipment. The controller is connected to the signal of 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 the first embodiment and is combined with a bevel gear set to drive the rotation of the lower roller group, which will not be repeated) 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 slurry baffle is fixed on the frame above the thick gear to prevent the thick gear from adhering to the gypsum slurry; a Teflon coating is provided on the impeller surface (to prevent the accumulation of gypsum slurry on the impeller and solidification); The thickness of the forming trough is similar to the thickness of the final product, slightly larger, for example, 20~25% larger than the thickness of the final product. In this way, once overflow occurs, the forming trough will move and can be formed after appropriate rolling, which is equivalent to reducing the initial thickness and shortening the rolling forming process. If there is no overflow, it means that the slurry thickness has not reached the set thickness. At this time, the lower roller group, that is, the conveying roller, does not run. If overflow occurs, it means that the slurry thickness has reached the set thickness. The overflowed slurry falls on the impeller and pushes the impeller. The impeller drives the thick gear to rotate, and the thick gear drives the roller of the lower roller group to rotate to realize the conveying of the forming trough. During the conveying process, the upper roller The group also plays the role of extrusion molding; when the sensor detects that the lower roller group is not running but there is still slurry overflowing (indicating that the impeller can no longer drive the lower roller group to continue rotating due to the extrusion of the upper roller group; and since the shaping roller, thickness adjustment roller or compaction roller are basically located in the middle and backward of the conveying direction, the impeller rotation can drive the rollers of the lower roller group to rotate at the beginning, and 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 group cannot be driven by the impeller rotation alone), the controller controls the reduction motor to drive the lower roller group to rotate.

[0038] One motion sensor is an acceleration sensor fixedly connected to the frame or a rotary encoder installed on the roller shaft of the lower roller group. The other motion sensor is a photoelectric sensor fixedly connected to the frame and located at the height between the impeller and the forming groove.

[0039] The acceleration sensor is used to detect the vibration of the conveyor roller itself (indirectly judging whether the upper forming groove moves); the rotary encoder detects whether the roller of the lower roller group rotates.

[0040] Example 6: The difference from Example 5 is that a gypsum slurry recovery bucket is provided under the impeller, and the recovery bucket is connected to the gypsum mixer via a material pump; Since overflow from the impeller is immediately recovered and pumped back into the gypsum mixer, the recovery time is relatively short, typically less than 10 minutes after discharge from the mixer. Gypsum slurry discharged from the mixer less than 10 minutes after discharge is essentially pre-set, still fluid, and showing no obvious signs of hardening, and can be promptly recycled. For gypsum slurry that has hardened to some extent, but has persisted for more than 10 minutes, a small amount of water (0.5%-1%) and dispersant can be added for further activation and stirring to restore some fluidity, allowing it to be recycled. (For example, if the recovered gypsum slurry is not immediately pumped into the gypsum mixer, it can be pumped into another container, such as a recovery tank, via a material pump. Water and / or dispersant can then be added to the gypsum slurry in the recovery tank for reuse.) The material pump is connected to the gypsum mixer and the recovery tank via two pipes, one connected to the gypsum mixer and the other to the recovery tank. Both pipes are equipped with on / off valves. If direct reuse is permitted, the on / off valve on the pipe to the gypsum mixer is opened; if not, the on / off valve is closed and the on / off valve on the pipe to the recovery tank is opened.)

[0041] Embodiment 7: The difference from embodiment 5 is that Figure 23 As shown, a motion sensor is provided on the frame, and the motion sensor is connected to the controller signal located outside the extrusion molding equipment. The controller is connected to the flushing machine 25 signal. The flushing machine is fixedly connected to the frame and driven to start, so that the nozzle of the flushing machine impacts the impeller 23.

[0042] When a sensor detects that the lower roller assembly is not operating and slurry is still overflowing (compared to Example 5, the drive reduction motor is eliminated and replaced by a flushing machine), the controller controls the flushing machine 25 to impact the impeller 23, causing the impeller to continue rotating. This continued rotation of the impeller can, to a certain extent, prevent the accumulation of gypsum slurry on the impeller and its solidification (this maintains the continuous flow of slurry and avoids prolonged stagnation). Furthermore, the impeller rotation also causes the lower roller assembly to continue rotating, cooperating with the upper roller assembly to continue conveying the forming trough. Furthermore, the flushing machine flushes the impeller, preventing the accumulation of gypsum slurry on the impeller surface and its solidification. This single control action achieves both conveying the forming trough and preventing the accumulation of gypsum slurry on the impeller. When the lower roller assembly is inoperative due to pressure from the sizing roller, thickness adjustment roller, or compacting roller, it continues to operate using the power of the flushing machine (the flushing pressure of the flushing machine is calculated and tested in advance and set to ensure that the speed of the lower roller assembly meets the required level during operation).

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as 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 rollers arranged on the frame, a forming trough located above the lower roller group, and a driving mechanism for driving the roller group to rotate. The lower roller group is used to support and convey the roller group; the forming trough and / or the frame are provided with a structure for reducing the length of the equipment.

2. The fiber reinforced gypsum board extrusion molding equipment according to claim 1, characterized in that: The structure includes an elastic cover plate fixedly arranged on the upper notch of the forming trough, the length of the elastic cover plate is less than the length of the forming trough, and the elastic cover plate is arranged near the slurry input end of the forming trough; a thickness-fixing slide plate is provided in the forming trough and under the elastic cover plate, and the thickness-fixing slide plate is composed of a vertical plate and a horizontal plate fixedly connected to the vertical plate, and the horizontal plate is located above the vertical plate, and the lengths of the vertical and horizontal plates are the same and consistent with the width of the forming trough; the gypsum mixer is arranged above the slurry input end of the forming trough; the forming trough is in the shape of a channel steel.

3. The fiber reinforced gypsum board extrusion molding equipment according to claim 2, characterized in that: The discharging port of the gypsum mixer is connected to a discharging plate which is arranged obliquely, and the discharging plate is located above the forming trough.

4. The fiber reinforced gypsum board extrusion molding equipment according to claim 2, characterized in that: The gypsum mixer is provided with a plurality of discharge ports which are arranged side by side, and each discharge port is connected to the forming tank through a discharge pipe.

5. A fiber reinforced gypsum board extrusion molding device according to claim 3 or 4, characterized in that: A hard cover is also fixed above the notch of the forming trough. The hard cover is made of Teflon material. The hard cover is fixedly connected to the elastic cover and along the conveying direction, they are the elastic cover and the hard cover in sequence. The hard cover consists of two parts, one part is inclined and the other part is horizontally arranged and along the conveying direction, they are the inclined part and the horizontal part in sequence. The height of the forming trough located at the horizontal part of the hard cover and the forming trough part located behind the horizontal part along the conveying direction is the same as the height of the horizontal part of the hard cover.

6. A fiber-reinforced gypsum board extrusion molding equipment according to claim 5, characterized in that the upper roller group is provided with a plurality of 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 at other positions of the upper roller group.

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