A gypsum board forming apparatus

Abstract

This invention discloses a gypsum board forming device, including a forming table, a forming plate, an extrusion plate, an edge adjusting device, and a straight edge device. The forming plate is fixed to the surface of the forming table, and the extrusion plate is positioned above the forming plate. A forming zone exists between the forming plate and the extrusion plate. An edge adjusting device is located at the entrance end of the forming zone, and a straight edge device is located inside the edge adjusting device. The upper and facing papers pass through the edge adjusting device before entering the forming zone. The edge adjusting device can adjust the position of the sides of the upper and facing papers to meet the actual production requirements of paper-faced gypsum board. Furthermore, the straight edge device is located at the contact edge between the edge adjusting device and the upper facing paper, ensuring that the edge of the upper facing paper is straight. This invention provides an edge adjusting device at the front end of the forming plate and the extrusion plate, which offers higher adjustment accuracy compared to traditional correction devices, and its closer proximity to the forming plate makes adjustment more effective.

Description

Technical Field

[0001] This invention relates to the field of gypsum board molding technology, and more specifically to a gypsum board molding device. Background Technology

[0002] Paper-faced gypsum board consists of an upper facing paper, a middle gypsum layer, and a lower facing paper. During the molding process, gypsum slurry is sprayed onto the surface of the lower facing paper and moves towards the molding device along with the lower facing paper. The upper facing paper and the lower facing paper with gypsum slurry on their surface converge at the molding device and are pressed together by the molding device to form a wet board of paper-faced gypsum board. Subsequent drying and other processes are carried out to finally form the finished paper-faced gypsum board.

[0003] In the above process, if the upper and lower protective papers are misaligned or offset at the pressing point of the molding device, it will cause the plaster to leak out or the sides to be uneven after pressing, resulting in waste boards. Although traditional production lines are equipped with correction devices for the upper and lower protective papers, they can only correct the overall orientation of the upper and lower protective papers and cannot make fine adjustments to the side positions of the upper and lower protective papers at the front end of the molding device. In addition, the upper protective paper has the risk of folding on the side in the early stage of bonding with the lower protective paper, which will also cause plaster to leak out and the board edges to be uneven, thus resulting in waste boards. Summary of the Invention

[0004] The purpose of this invention is to provide a gypsum board forming device that can make fine adjustments to the side of the upper and lower protective paper at the front end of the forming device, while avoiding folding of the side before the upper and lower protective paper are joined.

[0005] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A gypsum board forming device includes a forming table, a forming board, an extrusion plate, an edge adjusting device, and a straight edge device. A forming plate is fixed on the surface of the forming table, and an extrusion plate is provided above the forming plate. The area between the forming plate and the extrusion plate is a forming zone. An edge adjusting device is provided at the entrance end of the forming zone, and a straight edge device is provided inside the edge adjusting device. Before entering the forming area, the upper and lower protective papers pass through the edge adjusting device. The edge adjusting device can adjust the position of the side edges of the upper and lower protective papers to meet the actual production conditions of paper-faced gypsum board. Furthermore, the straight edge device is provided at the contact edge between the edge adjusting device and the upper protective paper, which can ensure that the edge of the upper protective paper is in a straight state.

[0006] As a preferred embodiment of the present invention, the edge adjustment device includes an adjustment base, an upper adjustment unit, and a lower adjustment unit; The adjustment base is divided into two parts, which are respectively fixed to the two sides of the forming table at the end of the forming plate. The middle part of the adjustment base is a transport channel for the upper and lower protective paper. The upper adjustment unit includes an upper adjustment screw, an upper adjustment handle, a positioning slide rod, and an upper adjustment component. The upper adjustment screw is parallel to the surface of the forming table and perpendicular to the moving direction of the upper and lower protective paper. Both ends are rotatably connected to the adjustment bases on both sides. One end of the upper adjustment screw passes through the side of the adjustment base and is fixed to the upper adjustment handle. The positioning slide rod is parallel to the upper adjusting screw and its two ends are fixed to the adjusting bases on both sides. The upper adjusting member is simultaneously sleeved on the surface of the upper adjusting screw and the positioning slide rod. The upper adjusting member is helically driven by the upper adjusting screw, and the upper adjusting member can slide along the axial direction of the positioning slide rod; The upper adjusting component is divided into two identical parts, the distance between which is equal to the width of the upper protective paper, and they are attached to the side of the upper protective paper. Rotating the upper adjusting handle can drive the two parts of the upper adjusting component to move simultaneously to the left or right along the axial direction of the upper adjusting screw. The lower adjustment unit includes a lower adjustment screw, a lower adjustment handle, a lower adjustment component, and a positioning slide groove. The lower adjustment screw is parallel to the surface of the forming table and perpendicular to the moving direction of the upper and lower protective paper. Both ends are rotatably connected to the adjustment bases on both sides. One end of the lower adjustment screw passes through the side of the adjustment base and is fixed to the lower adjustment handle. The positioning groove is formed on the surface of the forming platform in the middle of the adjusting base and is parallel to the lower adjusting screw; The lower adjusting member is sleeved on the surface of the lower adjusting screw in the middle and is screwed together with the screw. The bottom of the lower adjusting member is located in the positioning groove and can slide along the axial direction of the positioning groove. The upper surface of the lower adjusting member is flush with the upper surface of the forming plate and is divided into two parts with the same structure, located on both sides of the lower protective paper and attached to both sides of the lower protective paper. Rotating the lower adjusting handle can drive the two parts of the lower adjusting member to move to the left or right simultaneously along the axial direction of the lower adjusting screw.

[0007] As a preferred embodiment of the present invention, the straight edge device is disposed at the contact point between the upper adjusting member and the side edge of the upper protective paper, and includes a frame and a straight edge roller. The side of the frame is fixed to the side of the upper adjusting member facing the upper protective paper. The side of the frame facing the upper protective paper is recessed to form a straight edge groove. The straight edge rollers are arranged in pairs, in multiple symmetrical groups inside the straight edge groove, and are evenly arranged along the extension direction of the straight edge groove. The straight edge rollers are rotatably connected to the groove wall of the straight edge groove via a rotating shaft, and the gap between a set of opposing straight edge rollers is equal to the thickness of the upper protective paper. The upper protective paper enters from one end of the straight edge groove on both sides, passes between multiple sets of opposing straight edge rollers, and exits from the other end of the straight edge groove.

[0008] As a preferred embodiment of the present invention, the border is arc-shaped, and the two ends of the border are rounded.

[0009] As a preferred embodiment of the present invention, the surface of the lower adjusting member is provided with a vertical side plate, the bottom of the vertical side plate is rotatably connected to the surface of the lower adjusting member, and the outer side of the vertical side plate is fixedly connected to the outer protrusion of the lower adjusting member through an elastic element. The elastic element always exerts a pulling force on the vertical side plate toward the outer side of the vertical side plate. The elastic element has an adjustment knob on its upper part that is threadedly connected to the outer side of the lower adjustment member and extends through both sides. The end of the adjustment knob is attached to the outer side of the vertical side plate and provides support for it, thus balancing the tension of the elastic element.

[0010] The angle of the vertical side plate can be adjusted by rotating the adjustment knob to move the position of the end of the adjustment knob.

[0011] As a preferred embodiment of the present invention, a main cylinder is provided at the center of the lower part of the extrusion plate, and an auxiliary cylinder is provided above each end of the extrusion plate. The piston rod ends of the main cylinder and the auxiliary cylinder form symmetrical fixed connection points with the two ends of the extrusion plate, thereby supporting the weight of the extrusion plate. The extrusion plate moves up and down through the cooperation of the main cylinder and the two auxiliary cylinders, wherein the displacement amount and displacement direction of the internal piston rods of the main cylinder and the auxiliary cylinders are the same per unit time.

[0012] In a preferred embodiment of the present invention, the main cylinder is fixed below the forming table, and the piston end of the main cylinder is fixed to the middle of a U-shaped support rod. The two ends of the support rod pass through the connecting holes opened on both sides of the forming table and are fixed to the bottom of both ends of the extrusion plate, thereby enabling the main cylinder to support the extrusion plate.

[0013] The auxiliary cylinders are fixed by a bracket and the forming table, and the horizontal position and the height of the piston rod end of the two auxiliary cylinders are the same.

[0014] In a preferred embodiment of the present invention, the main cylinder and the two auxiliary cylinders are each connected to a solenoid valve, which is connected to an external high-pressure air source. By controlling the opening and closing of different air holes inside the solenoid valve, the movement of the internal piston rod of the main cylinder or the auxiliary cylinder connected to the solenoid valve is controlled.

[0015] As a preferred embodiment of the present invention, all three solenoid valves are synchronously controlled by a single external signal, so that the main cylinder and the auxiliary cylinder operate or stop synchronously.

[0016] As a preferred embodiment of the present invention, a fixed protective seat is provided at the communication port, and the two ends of the support rod pass through the sliding hole in the middle of the protective seat at their respective communication ports. The two ends of the support rod are in contact with the inner wall of the sliding hole and can slide in the vertical direction. A rubber pad is fixed to the top of the protective seat. When both ends of the extrusion plate are attached to the top of the protective seat, the lower surface of the extrusion plate is higher than the upper surface of the molding plate.

[0017] Compared with the prior art, the present invention has the following advantages: This invention features an edge-adjusting device at the front end of the forming plate and extrusion plate. Utilizing the principle of screw transmission, the upper and lower adjusting components move laterally by rotating the upper and lower adjusting screws, thereby adjusting the side positions of the upper and lower facing papers. Compared to traditional correction devices, this device offers higher adjustment precision and is closer to the forming plate for more effective adjustment. Furthermore, the invention includes a straight-edge device on the side of the upper facing paper to ensure its straightness and prevent folding that could result in waste. Additionally, the lower adjusting component includes a vertical edge plate and adjusting knob to adjust the vertical angle of the lower facing paper, ensuring the verticality of the paper-faced gypsum board's side and allowing for the manufacture of gypsum boards with different side angles to meet specific needs. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a front view of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 For the present invention Figure 1 View from direction A; The labels in the diagram represent the following: 1-Forming table, 2-Forming plate, 3-Extrusion plate, 4-Edge adjusting device, 5-Straight edge device, 6-Main cylinder, 7-Auxiliary cylinder, 8-Support rod, 9-Solenoid valve, 10-Protective seat; 11-Connecting port, 41-Adjusting base, 42-Upper adjusting screw, 43-Upper adjusting handle, 44-Positioning slide bar, 45-Upper adjusting component, 46-Lower adjusting screw, 47-Lower adjusting handle, 48-Positioning slide groove, 49-Lower adjusting component, 51-Frame, 52-Straight edge groove, 53-Straight edge roller, 54-Standing edge plate, 55-Elastic element, 56-Adjusting knob, 101-Sliding hole, 102-Rubber pad. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1-4 As shown, the present invention provides a gypsum board forming device, including a forming table 1, a forming plate 2, an extrusion plate 3, an edge adjusting device 4, and a straight edge device 5. A forming plate 2 is fixed on the surface of the forming table 1. An extrusion plate 3 is provided above the forming plate 2. The area between the forming plate 2 and the extrusion plate 3 is the forming area. An edge adjusting device 4 is provided at the entrance end of the forming area. A straight edge device 5 is provided inside the edge adjusting device 4. Before entering the forming area, the upper and lower protective papers pass through the edge adjusting device 4. The edge adjusting device 4 can adjust the position of the side edges of the upper and lower protective papers to meet the actual production conditions of paper-faced gypsum board. Furthermore, the straight edge device 5 is provided at the contact edge between the edge adjusting device 4 and the upper protective paper. The straight edge device 5 can ensure that the edge of the upper protective paper is in a straight state.

[0022] In this invention, the upper and lower facing papers are conveyed through a conveying mechanism to wrap the gypsum slurry and pass through the forming zone between the extrusion plate 3 and the forming plate 2. Through extrusion forming, this invention provides an edge adjustment device 4 and a straight edge device 5 at the end of the forming plate 2, i.e., at the entrance of the forming zone. The edge adjustment device 4 can make individual fine adjustments to the side position of the upper or lower facing paper. If, during the production process, the worker finds that the sides of the upper and lower facing papers on the pressed gypsum board are misaligned or do not overlap, the edge adjustment device 4 can be used to move the two sides of the upper and lower facing papers laterally to adjust their relative positions, so that the produced gypsum board returns to a qualified state. In addition, this invention provides straight edge devices 5 on both sides of the upper facing paper at the entrance of the forming zone to ensure that the sides of the upper facing paper will not fold before entering the forming zone, thereby improving the qualification rate of the paper-faced gypsum board.

[0023] Furthermore, the edge adjustment device 4 includes an adjustment base 41, an upper adjustment unit, and a lower adjustment unit; The adjusting base 41 is divided into two parts, which are respectively fixed to the two sides of the forming table 1 at the end of the forming plate 2. The middle part of the adjusting base 41 is a transport channel for the upper and lower protective paper. The upper adjustment unit includes an upper adjustment screw 42, an upper adjustment handle 43, a positioning slide rod 44, and an upper adjustment component 45. The upper adjustment screw 42 is parallel to the surface of the forming table 1 and perpendicular to the moving direction of the upper and lower protective paper. Both ends are rotatably connected to the adjustment bases 41 on both sides. One end of the upper adjustment screw 42 passes through the side of the adjustment base 41 and is fixed to the upper adjustment handle 43. The positioning slide rod 44 is parallel to the upper adjusting screw 42, and its two ends are fixed to the adjusting bases 41 on both sides. The upper adjusting member 45 is simultaneously sleeved on the surface of the upper adjusting screw 42 and the positioning slide rod 44. The upper adjusting member 45 is screwed to the upper adjusting screw 42, and the upper adjusting member 45 can slide along the axial direction of the positioning slide rod 44; The upper adjusting member 45 is divided into two identical parts, the distance between which is equal to the width of the upper protective paper, and they are attached to the side of the upper protective paper. Rotating the upper adjusting handle 43 can drive the two parts of the upper adjusting member 45 to move to the left or right simultaneously along the axial direction of the upper adjusting screw 42. The lower adjustment unit includes a lower adjustment screw 46, a lower adjustment handle 47, a lower adjustment component 49, and a positioning slide groove 48. The lower adjustment screw 46 is parallel to the surface of the forming table 1 and perpendicular to the moving direction of the upper and lower protective paper. Both ends are rotatably connected to the adjustment bases 41 on both sides. One end of the lower adjustment screw 46 passes through the side of the adjustment base 41 and is fixed to the lower adjustment handle 47. The positioning groove 48 is formed on the surface of the forming table 1 in the middle of the adjusting base 41 and is parallel to the lower adjusting screw 46; The lower adjusting member 49 is sleeved on the surface of the lower adjusting screw 46 in the middle and is screwed with both. The bottom of the lower adjusting member 49 is located in the positioning groove 48 and can slide along the axial direction of the positioning groove 48. The upper surface of the lower adjusting member 49 is flush with the upper surface of the forming plate 2, and is divided into two parts with the same structure, located on both sides of the lower protective paper and attached to both sides of the lower protective paper. Rotating the lower adjusting handle 47 can drive the two parts of the lower adjusting member 49 to move to the left or right along the axial direction of the lower adjusting screw 46.

[0024] In this invention, the position of the upper and lower facing paper sides is adjusted by rotating a screw and its helically driven moving part. The upper adjusting screw 42 and upper adjusting part 45 adjust the side of the upper facing paper, while the lower adjusting screw 46 and lower adjusting part 49 adjust the position of the lower facing paper. Rotating the upper adjusting handle 43 fixed to the end of the upper adjusting screw 42 causes the upper adjusting screw 42 to rotate around its axis. The upper adjusting part 45 is helically driven with the upper adjusting screw 42, and when the upper adjusting screw 42 rotates, it provides force to the upper adjusting part 45. The axial thrust causes it to move along the upper adjusting member 45 along the axial direction of the upper adjusting screw 42, thereby causing the upper cover paper to shift laterally by a corresponding distance. Similarly, rotating the lower adjusting handle 47 fixed to the end of the lower adjusting screw 46 can cause the lower adjusting screw 46 to rotate around its axis. The lower adjusting member 49 and the lower adjusting screw 46 are screwed together. When the lower adjusting screw 46 rotates, it will give the lower adjusting member 49 an axial thrust, causing it to move along the lower adjusting member 49 along the axial direction of the lower adjusting screw 46, thereby causing the lower cover paper to shift laterally by a corresponding distance.

[0025] In the above process, the positions of the positioning slide rod 44 and the positioning slide groove 48 are fixed, and the upper adjusting member 45 and the lower adjusting member 49 are respectively connected to them and can only slide along their axial direction. The positioning slide rod 44 and the positioning slide groove 48 generate a balancing force on the upper adjusting member 45 and the lower adjusting member 49, balancing the tangential rotational force from the upper adjusting screw 42 or the lower adjusting screw 46 on them. At the same time, both parts of the upper adjusting member 45 or the lower adjusting member 49 are screwed to the upper adjusting screw 42 or the lower adjusting screw 46, and they move to one side at the same time. The distance between them remains unchanged and is still equal to the width of the two sides of the upper or lower protective paper.

[0026] Furthermore, the straight edge device 5 is located at the point where the upper adjusting member 45 and the side edge of the upper protective paper are attached, and it includes a frame 51 and a straight edge roller 53. The side of the frame 51 is fixed to the side of the upper adjusting member 45 facing the upper protective paper. The side of the frame 51 facing the upper protective paper is recessed to form a straight edge groove 52. The straight edge rollers 53 are arranged in pairs, and multiple sets are symmetrically arranged inside the straight edge groove 52 and are evenly arranged along the extension direction of the straight edge groove 52. The straight edge roller 53 is rotatably connected to the groove wall of the straight edge groove 52 via a rotating shaft, and the gap between a set of opposing straight edge rollers 53 is equal to the thickness of the upper protective paper. The upper protective paper enters from one end of the straight edge groove 52, passes between multiple sets of opposing straight edge rollers 53, and exits from the other end of the straight edge groove 52.

[0027] When the upper protective paper passes through the roller gaps within the side frame 51, its sides are straightened by the straight edge roller 53. At the same time, the straight edge roller 53 is rotatably connected to the straight edge groove 52, allowing it to roll on the surface of the upper protective paper as it moves, reducing friction and making the adhesive on the side surface of the upper protective paper more even, thus improving the sealing effect after the upper and lower protective papers are pressed together. Meanwhile, the bottom of the straight edge groove 52 is attached to the two sides of the upper protective paper, and the frame 51 is directly fixed to the inner side of the upper adjusting member 45, moving with the upper adjusting member 45 and pushing the side position of the upper protective paper, maintaining the adjustment function of the upper adjusting member 45 on the side of the upper protective paper.

[0028] Furthermore, the border 51 is arc-shaped, and both ends of the border 51 are rounded.

[0029] The curved frame 51 can guide the upper protective paper moving from above the forming plate 2 to the forming area, making its turning point smoother and preventing the side of the upper protective paper from rubbing against the edge of the frame 51. At the same time, the chamfers at both ends of the frame 51 can prevent the edge of the frame 51 from tearing the upper protective paper when it accidentally rubs against the edge of the frame 51.

[0030] Furthermore, the surface of the lower adjusting member 49 is provided with a standing side plate 54, the bottom of the standing side plate 54 is rotatably connected to the surface of the lower adjusting member 49, and the outer side of the standing side plate 54 is fixedly connected to the outer side protrusion of the lower adjusting member 49 through an elastic element 55. The elastic element 55 always exerts a pulling force on the standing side plate 54 toward the outer side of the standing side plate 54. The elastic element 55 is provided with an adjustment knob 56 on its upper part, which is threadedly connected to the outer side of the lower adjustment member 49 and extends through both sides of it. The end of the adjustment knob 56 is attached to the outer side of the vertical side plate 54 and provides support for it, thus balancing the tension of the elastic element 55.

[0031] The angle of the vertical side plate 54 can be adjusted by rotating the adjustment knob 56 to move the position of the end of the adjustment knob 56.

[0032] This invention also includes a vertical edge adjustment component for the lower facing paper on the lower adjusting member 49, which can adjust the vertical edge angle of the lower facing paper. For aesthetic purposes, the vertical edges of gypsum board are generally right angles. However, with long-term wear and tear, the angle between the traditional vertical edge device and the plane changes, causing the side of the formed gypsum board to no longer be right angles. In this case, the entire vertical edge device must be replaced. This invention allows changing the position of the end of the adjusting knob 56, thereby changing the support point of the end of the adjusting knob 56 on the vertical edge plate 54, utilizing an elastic element. The elastic element 55 exerts a pulling force on the upright edge plate 54, wherein the elastic element 55 is a spring, rubber band, elastic band, etc., causing the upright edge plate 54 to rotate at a corresponding angle, so that the angle between it and the plane returns to 90°, thereby improving the service life of the upright edge plate 54. Furthermore, when there are special production requirements that require the production of paper-faced gypsum board with different side angles, the present invention can rotate the adjustment knob 56 to change the axial position of its contact end with the upright edge plate 54, so that the upright edge plate 54 presents different angles under the pulling force of the elastic element 55, thereby meeting the production requirements.

[0033] Furthermore, a main cylinder 6 is provided at the center of the lower part of the extrusion plate 3, and an auxiliary cylinder 7 is provided above each end of the extrusion plate 3. The piston rod ends of the main cylinder 6 and the auxiliary cylinder 7 form symmetrical fixed connection points with the two ends of the extrusion plate 3, thereby supporting the weight of the extrusion plate 3. The pressing plate 3 moves up and down through the cooperation of the main cylinder 6 and the two auxiliary cylinders 7, wherein the displacement amount and displacement direction of the internal piston rods of the main cylinder 6 and the auxiliary cylinders 7 are the same within a unit time.

[0034] This invention uses three cylinders to fix the position of the extrusion plate 3 and simultaneously output power to move the extrusion plate 33. The main cylinder 6 is located directly below the center of the extrusion plate 3. When the piston rod of the main cylinder 6 moves upward, it pushes the extrusion plate 3 upward, and vice versa. The two auxiliary cylinders 7 are located directly above both ends of the extrusion plate 3. When the piston rod of the auxiliary cylinder 7 moves upward, it pulls the extrusion plate 3 upward, and vice versa. The three cylinders start and stop simultaneously, and the displacement amount and direction of the internal piston rods of the main cylinder 6 and the auxiliary cylinders 7 are the same per unit time, thereby preventing the extrusion plate 3 from tilting. The three cylinders work together to control the rising and falling of the extrusion plate 3 and share the overall mass of the extrusion plate 3, making the movement of the extrusion plate 3 more stable and the movement accuracy more precise.

[0035] This invention uses a main cylinder 6 and two auxiliary cylinders 7 to form two symmetrical support points at both ends of the extrusion plate 3, balancing the weight of the extrusion plate 3 itself and the weight difference that appears at both ends after long-term use. This reduces the tilting of the extrusion plate 3 caused by uneven weight distribution at both ends, avoids accelerated wear on the side of the piston rod of the main cylinder 6 or auxiliary cylinder 7 due to tilting, and extends the overall service life of the equipment. At the same time, the support points at both ends of the extrusion plate 3 each bear the weight of both ends of the extrusion plate 3, and work together to maintain the posture balance of the extrusion plate 3. Its main force direction is vertical. The side of the piston rod at one or both ends may be corroded due to the working environment, but this has little impact on the posture of the extrusion plate 3 itself.

[0036] Furthermore, the main cylinder 6 is fixed below the forming table 1, and the piston end of the main cylinder 6 is fixed to the middle of a U-shaped support rod 8. The two ends of the support rod 8 pass through the connecting ports 11 opened on both sides of the forming table 1 and are fixed to the bottom of both ends of the extrusion plate 3, so that the main cylinder 6 supports the extrusion plate 3.

[0037] The auxiliary cylinder 7 is fixed by the bracket and the forming table 1, and the two auxiliary cylinders 7 are at the same horizontal position and the same height of their piston rod ends.

[0038] In this invention, the main cylinder 6 is located below the forming table 1. Its piston rod is connected to the lower ends of the extrusion plate 3 through the support rod 8. The end of the piston rod is fixed to the middle of the support rod 8, so that the pushing or pulling force on the two ends of the extrusion plate 3 is equal. The support rod 8 is located below the forming table 1 as a whole. Its two ends pass through the connecting port 11 and are fixed to the extrusion plate 3, so as to avoid affecting the normal transportation of gypsum board on the surface of the forming table 1 during its rising or falling. The two auxiliary cylinders 7 are in the same horizontal position so as to ensure that the bottom surface of the extrusion plate 3 is horizontal after being connected with the extrusion plate 3, and the stability of the extrusion plate 3's own posture when the piston rods of the two cylinders move at the same time.

[0039] Furthermore, the main cylinder 6 and the two auxiliary cylinders 7 are each connected to a solenoid valve 9, which is connected to an external high-pressure air source. By controlling the opening and closing of different air holes inside the solenoid valve 9, the movement of the internal piston rod of the main cylinder 6 or the auxiliary cylinder 7 connected to the solenoid valve 9 is controlled.

[0040] In this invention, the movement of the piston rods inside the main cylinder 6 and the auxiliary cylinder 7 is controlled by an electromagnetic valve 9. The electromagnetic valve 9 can be controlled by an external electrical signal to move its internal valve body, blocking or allowing different exhaust ports, while the intake port is always in the intake state. High-pressure gas can enter different cavities at both ends of the cylinder through different exhaust ports, thereby generating different pressure differences at both ends of the piston, thus driving the piston rod to move. Using the electromagnetic valve 9 to control the movement of the piston rods of the main cylinder 6 and the auxiliary cylinder 7 has a fast response speed, high accuracy, and is relatively convenient to operate.

[0041] Furthermore, all three solenoid valves 9 are synchronously controlled by a single external signal, causing the main cylinder 6 and the auxiliary cylinder 7 to operate or stop synchronously.

[0042] In this invention, the main cylinder 6 and the two auxiliary cylinders 7 need to start and stop simultaneously. Therefore, the three solenoid valves 9 can be connected to an external control source. The three solenoid valves 9 can be synchronously controlled by a single signal, which greatly improves the stability of the lifting and lowering of the extrusion plate 3.

[0043] Furthermore, a fixed protective seat 10 is provided at the communication port 11, and the two ends of the support rod 8 pass through the sliding hole 101 in the middle of the protective seat 10 at their respective communication ports 11. The two ends of the support rod 8 are attached to the inner wall of the sliding hole 101 and can slide in the vertical direction. A rubber pad 102 is fixed to the top of the protective seat 10. When the two ends of the extrusion plate 3 are attached to the top of the protective seat 10, the lower surface of the extrusion plate 3 is higher than the upper surface of the molding plate 2.

[0044] To prevent the extrusion plate 3 from falling and damaging the forming plate 2 and forming table 1 below it due to piston rod failure of the main cylinder 6 or auxiliary cylinder 7, or due to operational errors, the present invention provides a protective seat 10 at the connection port at both ends of the extrusion plate 3. The seat is in the shape of a protrusion and can limit the extrusion plate 3 to prevent it from completely adhering to the surface of the forming plate 2. At the same time, a rubber pad 102 is fixed on its top to buffer the falling extrusion plate 3 and protect the forming table 1 and the extrusion plate 3. Furthermore, the sliding hole 101 inside it also limits the movement direction of the support rod 8 fixed at the bottom of the extrusion plate 3, so that it can only move in the vertical direction and cannot deflect laterally, thereby making the posture of the extrusion plate 3 more stable.

[0045] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A gypsum board forming device, characterized in that, It includes a forming table (1), a forming plate (2), an extrusion plate (3), an edge adjusting device (4), and a straight edge device (5); A forming plate (2) is fixed on the surface of the forming table (1), and an extrusion plate (3) is provided above the forming plate (2). The area between the forming plate (2) and the extrusion plate (3) is the forming area. An edge adjustment device (4) is provided at the entrance end of the forming area, and a straight edge device (5) is provided inside the edge adjustment device (4). The upper and lower protective papers pass through the edge adjustment device (4) before entering the forming area. The edge adjustment device (4) can adjust the position of the side edges of the upper and lower protective papers to meet the actual production conditions of paper-faced gypsum board. Furthermore, the straight edge device (5) is provided on the contact side between the edge adjustment device (4) and the upper protective paper. The straight edge device (5) can ensure that the edge of the upper protective paper is in a straight state. The edge adjustment device (4) includes an adjustment base (41), an upper adjustment unit, and a lower adjustment unit; The adjusting base (41) is divided into two parts, which are respectively fixed to the two sides of the forming table (1) at the end of the forming plate (2). The middle part of the adjusting base (41) is the transport channel for the upper and lower protective paper. The upper adjustment unit includes an upper adjustment screw (42), an upper adjustment handle (43), a positioning slide rod (44), and an upper adjustment component (45). The upper adjustment screw (42) is parallel to the surface of the forming table (1), perpendicular to the moving direction of the upper and lower protective paper, and its two ends are rotatably connected to the adjustment bases (41) on both sides. One end of the upper adjustment screw (42) passes through the side of the adjustment base (41) and is fixed to the upper adjustment handle (43). The positioning slide rod (44) is parallel to the upper adjusting screw (42) and its two ends are fixed to the adjusting bases (41) on both sides. The upper adjusting member (45) is simultaneously sleeved on the surface of the upper adjusting screw (42) and the positioning slide rod (44). The upper adjusting member (45) is screwed to the upper adjusting screw (42), and the upper adjusting member (45) can slide along the axial direction of the positioning slide rod (44); The upper adjusting member (45) is divided into two parts with the same structure. The distance between the two parts is equal to the width of the upper protective paper and is attached to the side of the upper protective paper. When the upper adjusting handle (43) is rotated, the two parts of the upper adjusting member (45) can be driven to move to the left or right along the axial direction of the upper adjusting screw (42). The lower adjustment unit includes a lower adjustment screw (46), a lower adjustment handle (47), a lower adjustment component (49), and a positioning slide (48). The lower adjustment screw (46) is parallel to the surface of the forming table (1), perpendicular to the moving direction of the upper and lower protective paper, and its two ends are rotatably connected to the adjustment bases (41) on both sides. One end of the lower adjustment screw (46) passes through the side of the adjustment base (41) and is fixed to the lower adjustment handle (47). The positioning groove (48) is formed on the surface of the forming table (1) in the middle of the adjusting base (41) and is parallel to the lower adjusting screw (46). The lower adjusting member (49) is sleeved on the surface of the lower adjusting screw (46) in the middle, and the two are driven by a screw. The bottom of the lower adjusting member (49) is located in the positioning groove (48) and can slide along the axial direction of the positioning groove (48). The upper surface of the lower adjusting member (49) is flush with the upper surface of the forming plate (2) and is divided into two parts with the same structure, located on both sides of the lower protective paper and attached to both sides of the lower protective paper. When the lower adjusting handle (47) is rotated, the two parts of the lower adjusting member (49) can be driven to move to the left or right along the axial direction of the lower adjusting screw (46).

2. The gypsum board forming device according to claim 1, characterized in that, The straight edge device (5) is located at the junction of the upper adjusting member (45) and the side edge of the upper protective paper, and includes a frame (51) and a straight edge roller (53). The side of the frame (51) is fixed to the side of the upper adjustment member (45) facing the upper protective paper. The side of the frame (51) facing the upper protective paper is recessed to form a straight edge groove (52). The straight edge rollers (53) are arranged in pairs and multiple groups symmetrically inside the straight edge groove (52), and are evenly arranged along the extension direction of the straight edge groove (52). The straight edge roller (53) is rotatably connected to the groove wall of the straight edge groove (52) via a rotating shaft, and the gap between a set of opposing straight edge rollers (53) is equal to the thickness of the upper protective paper; The upper protective paper enters from one end of the straight edge groove (52), passes between multiple sets of opposing straight edge rollers (53), and exits from the other end of the straight edge groove (52).

3. The gypsum board forming device according to claim 2, characterized in that, The border (51) is arc-shaped, and the two ends of the border (51) are rounded.

4. The gypsum board forming device according to claim 1, characterized in that, The lower adjusting member (49) has a vertical side plate (54) on its surface. The bottom of the vertical side plate (54) is rotatably connected to the surface of the lower adjusting member (49). The outer side of the vertical side plate (54) is fixedly connected to the outer side protrusion of the lower adjusting member (49) through an elastic element (55). The elastic element (55) always exerts a pulling force on the vertical side plate (54) towards the outer side of the vertical side plate (54). The elastic element (55) is provided with an adjustment knob (56) that is threadedly connected to the outer side of the lower adjustment member (49) and extends through both sides of it. The end of the adjustment knob (56) is attached to the outer side of the vertical side plate (54) and forms support for it, balancing the tension of the elastic element (55). The angle of the vertical side plate (54) can be adjusted by rotating the adjustment knob (56) to move the position of the end of the adjustment knob (56).

5. The gypsum board forming device according to claim 1, characterized in that, A main cylinder (6) is provided at the center of the bottom of the extrusion plate (3), and an auxiliary cylinder (7) is provided above each end of the extrusion plate (3). The piston rod ends of the main cylinder (6) and the auxiliary cylinder (7) form symmetrical fixed points with the two ends of the extrusion plate (3), thereby supporting the weight of the extrusion plate (3). The pressing plate (3) moves up and down through the cooperation of the main cylinder (6) and the two auxiliary cylinders (7), wherein the displacement amount and displacement direction of the internal piston rods of the main cylinder (6) and the auxiliary cylinders (7) are the same within a unit time.

6. The gypsum board forming device according to claim 5, characterized in that, The main cylinder (6) is fixed below the forming table (1). The piston end of the main cylinder (6) is fixed to the middle of a U-shaped support rod (8). The two ends of the support rod (8) pass through the connecting holes (11) on both sides of the forming table (1) and are fixed to the bottom of both ends of the extrusion plate (3), so that the main cylinder (6) supports the extrusion plate (3). The auxiliary cylinder (7) is fixed by the bracket and the forming table (1), and the two auxiliary cylinders (7) are in the same horizontal position and at the same height of their piston rod ends.

7. A gypsum board forming device according to claim 6, characterized in that, The main cylinder (6) and the two auxiliary cylinders (7) are each connected to a solenoid valve (9). The solenoid valve (9) is connected to an external high-pressure air source. By controlling the opening and closing of different air holes inside the solenoid valve (9), the movement of the internal piston rod of the main cylinder (6) or the auxiliary cylinder (7) connected to the solenoid valve (9) is controlled.

8. A gypsum board forming device according to claim 7, characterized in that, All three solenoid valves (9) are synchronously controlled by a single external signal, so that the main cylinder (6) and the auxiliary cylinder (7) move or stop synchronously.

9. A gypsum board forming device according to claim 6, characterized in that, A fixed protective seat (10) is provided at the connection port (11). The two ends of the support rod (8) pass through the sliding hole (101) in the middle of the protective seat (10) at their respective connection ports (11). The two sides of the support rod (8) are attached to the inner wall of the sliding hole (101) and can slide in the vertical direction. A rubber pad (102) is fixed on the top of the protective seat (10). When the two ends of the extrusion plate (3) are attached to the top of the protective seat (10), the lower surface of the extrusion plate (3) is higher than the upper surface of the molding plate (2).

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