Device and method for drying gypsum board

Abstract

The invention relates to the technical field of gypsum board drying, in particular to a gypsum board drying device and method.The gypsum board drying device comprises a conveying roller machine, a shell and a containing frame, the shell is matched with the conveying roller machine to form a drying channel, and a gypsum board is arranged on the containing frame; the conveying roller machine can move the containing frame from a feeding port of the drying channel to a discharging port of the drying channel, drying hot air is blown into the drying channel in the direction perpendicular to the extending direction of the drying channel, and the containing frame comprises a plurality of first frame bodies and a plurality of second frame bodies. The first frame bodies and the second frame bodies are stacked at intervals; the first frame body comprises a first supporting frame and a plurality of second clamping rollers rotationally arranged in the first supporting frame. The second frame body comprises a second supporting frame and a plurality of first clamping rollers rotationally arranged in the second supporting frame. The problem of bending or cracking of the gypsum board in the drying process can be avoided, and meanwhile the surface quality of the gypsum board can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum board drying, in particular to a device and method for drying gypsum boards. Background Art

[0002] During the forming stage of gypsum board production, a large amount of water must be added to form a slurry that is easy to process. However, excess water weakens the board's strength and stability. Therefore, the drying process is an essential and critical step in gypsum board production, and its quality directly determines the board's ultimate performance and market suitability. By precisely controlling drying conditions, excess water can be effectively removed, allowing the gypsum board to meet the specified moisture content. During this process, the gradual evaporation of water promotes a denser bond between gypsum crystals, significantly improving the overall strength and hardness of the gypsum board, ensuring its quality meets market demands.

[0003] Publication No. CN116685823A discloses an industrial drying device for drying board precursors to form gypsum boards. The device dries the board precursors (i.e., undried gypsum boards) by zoned drying. However, in actual use, the device has the following shortcomings: In this solution, the board precursor is supported by the table, and there is a problem of excessive contact area between the board precursor and the table, and the contact position between the board precursor and the table 104 cannot directly contact the dry hot air, resulting in the water evaporation rate at this contact position being different from the water evaporation rate at other positions, which can easily lead to uneven stress inside the gypsum board and cause bending or cracking problems; at the same time, since the gypsum board cannot be shifted during the drying process, the contact position between the gypsum board and the table does not change for a long time, which can easily lead to bonding problems. In this way, the bonding position is likely to tear when cutting, which increases the difficulty of cutting and easily causes the surface quality of the gypsum board to deteriorate. Summary of the Invention

[0004] The object of the present invention is to provide a device and method for drying gypsum board to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A device for drying gypsum boards, comprising a conveyor roller, a housing, and a placement rack. The housing cooperates with the conveyor roller to form a drying channel. The gypsum boards are placed on the placement rack. The conveyor roller is capable of moving the placement rack from an inlet to an outlet of the drying channel. Dry hot air is blown into the drying channel in a direction perpendicular to the extension direction of the drying channel. The placement rack includes a plurality of first racks and a plurality of second racks, wherein the first racks and the second racks are stacked and spaced apart; The first frame includes a first support frame and a plurality of second clamping rollers rotatably disposed in the first support frame; The second frame includes a second support frame and a plurality of first clamping rollers rotatably disposed in the second support frame; The gypsum board is clamped between the first clamping roller and the second clamping roller; Each of the second frames is correspondingly provided with a guide rail, and the first clamping roller performs intermittent forward and reverse rotations on the guide rail, so that the gypsum board performs intermittent lateral movement in the process of passing through the drying channel.

[0006] Preferably, the guide track includes a plurality of track units, each of which includes a lower plate, an upper plate, and a vertical portion fixedly connected between the lower plate and the upper plate. The vertical portion is fixedly connected to the housing, and a third air outlet is formed between two adjacent vertical portions. A first end shaft is coaxially fixed to the end of the first clamping roller, and a gear and a regular polyhedron are fixedly provided on the first end shaft; A plurality of pads are fixed at intervals on the upper surface of the lower plate; Racks that can be adjusted up and down are provided on both the lower plate and the upper plate.

[0007] Preferably, an L-shaped frame is fixed on both the lower plate and the upper plate, a vertically arranged guide rod is fixedly connected to the L-shaped frame, the rack is slidably arranged on the guide rod through a guide sleeve, and an elastic component is fixedly connected between the guide sleeve and the L-shaped frame; The lower plate and the upper plate are both rotatably connected to a rotating shaft, one end of the rotating shaft is connected to the output shaft of the driving component, and the other end is fixed with a special-shaped block; The driving component drives the special-shaped block to rotate through the rotating shaft, so that the rack performs a lifting motion.

[0008] Preferably, the special-shaped block includes a semicircular surface, a plane and an arc surface connected between the semicircular surface and the plane; wherein, the center of the semicircular surface falls on the axis of the rotating shaft, and the distance between the plane and the axis of the rotating shaft is greater than the distance between the semicircular surface and the axis of the rotating shaft.

[0009] Preferably, a mounting groove is formed at one end of the regular polyhedron, a mounting block is fixed at one end of the first end shaft, and the mounting block is fixed inside the mounting groove by a fastener.

[0010] Preferably, the first support frame includes two second side frame plates, the end of the second clamping roller is coaxially fixed with a second end shaft, the two second end shafts are rotatably connected to the two second side frame plates through second bearing seats, the ends of the two second side frame plates are fixedly connected through a second connecting rod, and a second air outlet is opened on the second side frame plate.

[0011] Preferably, the second support frame includes two first side frame plates, the first end shaft is rotatably connected to the first side frame plates through a first bearing seat, the ends of the two first side frame plates are fixedly connected by a first connecting rod, and a first air outlet is opened on the first side frame plates.

[0012] Preferably, notches are provided on both the lower plate and the upper plate, and the rack is slidably arranged inside the notches.

[0013] A method for drying a gypsum board, based on the above-mentioned device for drying a gypsum board, comprises the following steps: S1. Place a gypsum board between each adjacent first frame and second frame; S2. Place the rack carrying the gypsum board at the inlet of the drying channel; S3, start the conveyor roller machine and input dry hot air into the drying channel. The conveyor roller machine causes the placement rack to slowly move from the inlet to the outlet to dry the gypsum board with the dry hot air; S31. During the movement of the placement rack, when one of the side surfaces of the regular polyhedron comes into sliding contact with the backing plate, the first clamping roller and the second clamping roller cannot rotate, and the gypsum board remains fixed; S32. When the gypsum board needs to be moved to change the contact position between the first clamping roller and the second clamping roller and the gypsum board, the driving component can be used to control the rack on the lower plate and the rack on the upper plate so that the rack on the lower plate and the rack on the upper plate can be raised or lowered at appropriate times. S321. After the rack on the lower plate rises to a predetermined height, when the regular polyhedron separates from the backing plate, the gear rotates clockwise under the action of the rack, driving the first clamping roller to rotate clockwise, causing the gypsum board above the first clamping roller to move right and the gypsum board below the first clamping roller to move left, thereby changing the contact position between the first and second clamping rollers and the gypsum board; S322. After the rack on the upper plate drops to a predetermined height, when the regular polyhedron is separated from the pad, the gear will rotate counterclockwise under the action of the rack, driving the first clamping roller to rotate counterclockwise, so that the gypsum board above the first clamping roller moves to the left and the gypsum board below the first clamping roller moves to the right.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention supports the gypsum board by providing a first clamping roller and a second clamping roller, which can convert the surface contact between the traditional table plate and the gypsum board into the current line contact between the first clamping roller and the gypsum board, and between the second clamping roller and the gypsum board, which significantly reduces the contact area between the gypsum board and the placement rack, thereby increasing the contact area between the gypsum board and the dry hot air; at the same time, the present technical solution also provides a guide rail to enable the gypsum board to perform intermittent lateral reciprocating movement during the process of passing through the drying channel. On the one hand, the lateral reciprocating movement of the gypsum board can change the contact position between itself and the first clamping roller and the second clamping roller, ensuring that every inch of the gypsum board can be in contact with the dry hot air, so that the evaporation rate of moisture on the surface of the gypsum board is consistent, and the gypsum board is prevented from bending or cracking. problem; on the other hand, since the gypsum board will move back and forth laterally, there will be no problem of adhesion between the gypsum board and the first clamping roller and the second clamping roller, which reduces the difficulty of unloading and is also conducive to improving the surface quality of the gypsum board; in addition, in the process of the first clamping roller and the second clamping roller driving the gypsum board to move back and forth laterally, it also plays a role in rolling and leveling the gypsum board, ensuring the flatness of the gypsum board after drying and avoiding bending of the gypsum board; moreover, since the first clamping roller and the second clamping roller are stacked at intervals, the moving directions of the two adjacent gypsum boards are opposite. For example, when the gypsum board at the bottom of the first clamping roller moves to the right, the gypsum board at the top of the first clamping roller moves to the left, thereby ensuring that the center of gravity of the entire placement rack does not change when the gypsum board moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the placement rack and the guide rail of the present invention; Figure 3 This is a schematic structural diagram of the first frame, the second frame, and the track unit of the present invention; Figure 4 It is a structural schematic diagram of the gypsum board, the first frame, and the second frame of the present invention; Figure 5 This is a schematic structural diagram of the gypsum board and track monomer of the present invention; Figure 6 is a schematic structural diagram of the second frame of the present invention; Figure 7 It is a structural schematic diagram of the first frame of the present invention; Figure 8 Schematic diagram of the structure of the track monomer of the present invention; Figure 9 This is a schematic structural diagram of the first end shaft of the present invention; Figure 10 Schematic diagram of the structure of the rack of the present invention; Figure 11 Schematic diagram of the structure of the gear and regular polyhedron of the present invention; Figure 12 Schematic diagram of the cross-sectional structure of the gear and regular polyhedron of the present invention; Figure 13 It is a structural schematic diagram of the rotating shaft and special-shaped block of the present invention.

[0016] In the figure: 1, conveyor roller; 2, housing; 3, placement rack; 4, guide rail; 5, gypsum board; 6, first frame; 7, second frame; 8, track unit; 9, first side frame; 10, first clamping roller; 11, first bearing seat; 12, first connecting rod; 13, first air outlet; 14, second side frame; 15, second clamping roller; 16, second bearing seat; 17, second connecting rod; 18, second air outlet; 19, second end shaft; 20, first End shaft; 21. Gear; 22. Regular polyhedron; 23. Lower plate; 24. Upper plate; 25. Vertical portion; 26. Third air outlet; 27. Pad; 28. Rack; 29. ​​Rotating shaft; 30. Third bearing seat; 31. Driving component; 32. L-shaped frame; 33. Guide rod; 34. Guide sleeve; 35. Elastic component; 36. Notch; 37. Mounting block; 38. Mounting slot; 39. Special-shaped block; 40. Semicircular surface; 41. Plane; 42. Arc surface. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1-13 , the present invention provides a technical solution: A device for drying gypsum boards includes a conveyor roller 1, a shell 2, and a placement rack 3. The conveyor roller 1 is used to convey the placement rack 3. The shell 2 cooperates with the conveyor roller 1 to form a drying channel. The gypsum boards 5 are placed on the placement rack 3. The conveyor roller 1 can move the placement rack 3 from the inlet of the drying channel to the outlet of the drying channel. Dry hot air is blown into the drying channel in a direction perpendicular to the extension direction of the drying channel to use the dry hot air to dry the gypsum boards 5.

[0019] The above is prior art and will not be elaborated here.

[0020] Different from the prior art, in the present technical solution, the placement rack 3 includes several first frames 6 and several second frames 7, and the first frames 6 and the second frames 7 are stacked at intervals. In this embodiment, there is no limitation on the specific number of the first frames 6 and the second frames 7. For example, in some embodiments, the number of the first frames 6 and the second frames 7 can be three each. At this time, their stacking method from bottom to top can be: first frame 6, second frame 7, first frame 6, second frame 7, first frame 6, second frame 7, or of course, it can also be: second frame 7, first frame 6, second frame 7, first frame 6, second frame 7, first frame 6, thereby realizing the interval stacking arrangement between the first frame 6 and the second frame 7.

[0021] The first frame 6 includes a first support frame and a plurality of second clamping rollers 15 rotatably arranged in the first support frame; the first support frame includes two second side frame plates 14, and the ends of the second clamping rollers 15 are coaxially fixed with second end shafts 19, and the two second end shafts 19 are respectively rotatably connected to the two second side frame plates 14 through second bearing seats 16, and the ends of the two second side frame plates 14 are fixedly connected by second connecting rods 17. A second air outlet 18 is opened on the second side frame plate 14, and the second air outlet 18 is used to facilitate the blowing of dry hot air into the gap between the two adjacent gypsum boards 5.

[0022] The second frame 7 includes a second support frame and a plurality of first clamping rollers 10 rotatably arranged in the second support frame; the second support frame includes two first side frame plates 9, the first end shaft 20 is rotatably connected to the first side frame plate 9 through the first bearing seat 11, and the ends of the two first side frame plates 9 are fixedly connected by a first connecting rod 12. A first air outlet 13 is provided on the first side frame plate 9, and the first air outlet 13 is used to facilitate the blowing of dry hot air into the gap between the two adjacent gypsum boards 5.

[0023] Among them, the axial directions of the first clamping roller 10 and the second clamping roller 15 are both perpendicular to the extension direction of the drying channel. Furthermore, in the present technical solution, there is no specific limitation on the number of the first clamping roller 10 and the second clamping roller 15. When in use, the number of the first clamping roller 10 and the second clamping roller 15 can be adjusted and set according to actual conditions. The principle of setting is to use as few first clamping rollers 10 and second clamping rollers 15 as possible to stably support the gypsum board 5.

[0024] The gypsum board 5 is clamped between the first clamping roller 10 and the second clamping roller 15; specifically, since the number of the first clamping roller 10 and the second clamping roller 15 is not limited, for the convenience of description, the several second clamping rollers 15 set on each first frame 6 can be referred to as a group of second clamping rollers 15, and similarly, the several first clamping rollers 10 set on each second frame 7 can be referred to as a group of first clamping rollers 10. Furthermore, since the first frame 6 and the second frame 7 are stacked at intervals, a group of first clamping rollers 10 and a group of second clamping rollers 15 are also stacked at intervals, and the gypsum board 5 is clamped between a group of first clamping rollers 10 and a group of second clamping rollers 15; wherein, in this embodiment, the first clamping roller 10 is an active roller and the second clamping roller 15 is a driven roller.

[0025] Each second frame 7 is correspondingly provided with two guide rails 4, which are symmetrically arranged on both sides of the second frame 7, and the guide rails 4 are mounted on the outer shell 2 by fasteners such as bolts. The first clamping roller 10 intermittently rotates forward and reverse on the guide rail 4, so that the gypsum board 5 intermittently moves laterally during the process of passing through the drying channel.

[0026] In the above scheme, the gypsum board 5 is supported by the first clamping roller 10 and the second clamping roller 15, which can convert the surface contact between the traditional table and the gypsum board 5 into the current line contact between the first clamping roller 10 and the gypsum board 5, and between the second clamping roller 15 and the gypsum board 5, which significantly reduces the contact area between the gypsum board 5 and the placement rack 3, thereby increasing the contact area between the gypsum board 5 and the dry hot air; at the same time, the present technical scheme also provides a guide rail 4 to enable the gypsum board 5 to perform intermittent lateral reciprocating movement during the process of passing through the drying channel. On the one hand, the lateral reciprocating movement of the gypsum board 5 can change the contact position between itself and the first clamping roller 10 and the second clamping roller 15, ensuring that every inch of the gypsum board 5 can be in contact with the dry hot air, so that the evaporation rate of moisture on the surface of the gypsum board 5 is consistent, and the gypsum board 5 is prevented from bending or cracking. On the other hand, since the gypsum board 5 can move back and forth laterally, there will be no problem of adhesion between the gypsum board 5 and the first clamping roller 10 and the second clamping roller 15, which reduces the difficulty of unloading and is also conducive to improving the surface quality of the gypsum board 5; in addition, in the process of the first clamping roller 10 and the second clamping roller 15 driving the gypsum board 5 to move back and forth laterally, it also plays a role in rolling and leveling the gypsum board 5, ensuring the flatness of the gypsum board 5 after drying and preventing the gypsum board 5 from bending; and, since the first clamping roller 10 and the second clamping roller 15 are stacked at intervals, the movement directions of the two adjacent gypsum boards 5 are opposite. For example, when the gypsum board 5 at the bottom of the first clamping roller 10 moves to the right, the gypsum board 5 at the top of the first clamping roller 10 moves to the left, thereby ensuring that the center of gravity of the entire placement rack 3 does not change when the gypsum board 5 moves.

[0027] The structure of the guide rail 4 is described in detail below.

[0028] The guide track 4 includes a plurality of track units 8, which are fixedly connected in sequence along the extension direction of the drying channel to form a long strip of the guide track 4. The track units 8 include a lower plate 23 and an upper plate 24 arranged in parallel, and a vertical portion 25 fixedly connected between the lower plate 23 and the upper plate 24. The vertical portion 25 is fixedly connected to the housing 2, thereby achieving a fixed connection between the guide track 4 and the housing 2. A third air outlet 26 is formed between two adjacent vertical portions 25. The third air outlet 26 is used to facilitate the blowing of dry hot air into the gap between two adjacent gypsum boards 5. A first end shaft 20 is coaxially fixed to the end of the first clamping roller 10, and a gear 21 and a regular polyhedron 22 are fixed on the first end shaft 20. In this embodiment, the regular polyhedron 22 can be a regular octahedron, which has eight sides of equal area; a number of pads 27 are fixed at intervals on the upper surface of the lower plate 23; racks 28 that can be adjusted up and down are provided on the lower plate 23 and the upper plate 24; wherein the pads 27 and the racks 28 are spaced apart; slots 36 are provided on the lower plate 23 and the upper plate 24, and the racks 28 are slidably arranged inside the slots 36, and the side of the racks 28 close to the gypsum board 5 is flush with the side of the lower plate 23 and the upper plate 24 close to the gypsum board 5.

[0029] The installation method of the regular polyhedron 22 is as follows: a mounting groove 38 is opened at one end of the regular polyhedron 22, and a mounting block 37 is fixed to one end of the first end shaft 20. In this embodiment, the mounting groove 38 and the mounting block 37 are both regular octahedral structures, and the mounting block 37 is fixed inside the mounting groove 38 by fasteners (such as bolts).

[0030] In actual use, when one of the side surfaces of the regular polyhedron 22 contacts the pad 27, the first clamping roller 10 cannot rotate due to the restriction of the regular polyhedron 22, and the gypsum board 5 remains in a fixed state at this time; and when one of the side surfaces of the regular polyhedron 22 is separated from the pad 27, the gear 21 will engage with the rack 28, and then under the action of the movement of the entire placement rack 3, the gear 21 drives the first end shaft 20 and the first clamping roller 10 to rotate, thereby driving the gypsum board 5 to move laterally; further, since racks 28 are provided on both the lower plate 23 and the upper plate 24, when the gear 21 engages with the rack 28 on the lower plate 23, the gypsum board 5 moves in a first direction, and when the gear 21 engages with the rack 28 on the upper plate 24, the gypsum board 5 moves in a second direction, wherein the first direction and the second direction are opposite, for example, the first direction can be to the right and the second direction is to the left.

[0031] Since there are multiple first clamping rollers 10 and second clamping rollers 15, it is necessary to control the rack 28 to rise and fall so that the multiple first clamping rollers 10 can rotate synchronously. The up and down adjustment method of the rack 28 is described below.

[0032] An L-shaped frame 32 is fixed on both the lower plate 23 and the upper plate 24, and a vertically arranged guide rod 33 is fixedly connected to the L-shaped frame 32. The rack 28 is slidably set on the guide rod 33 through a guide sleeve 34, and the guide sleeve 34 is embedded in the rack 28. An elastic component 35 is fixedly connected between the guide sleeve 34 and the L-shaped frame 32. Specifically, the elastic component 35 can be a straight spring. The rack 28 has a working position and a retracted position. When the rack 28 is in the working position, it can engage with the gear 21. When the rack 28 is in the retracted position, the gear 21 cannot engage with the rack 28; when the rack 28 is in the retracted position, the elastic component 35 is in its original length state, and when the rack 28 is in the working position, the elastic component 35 is in a stretched state.

[0033] A rotating shaft 29 is rotatably connected to both the lower plate 23 and the upper plate 24 via a third bearing seat 30. One end of the rotating shaft 29 is connected to the output shaft of the driving component 31, and the other end is fixed with a special-shaped block 39. The driving component 31 drives the special-shaped block 39 to rotate via the rotating shaft 29, causing the rack 28 to move up and down. The output shaft of the driving component 31 can rotate by a certain angle. In this embodiment, the driving component 31 can be a rotary cylinder.

[0034] The up and down adjustment method of the rack 28 is as follows, wherein the rack 28 on the lower plate 23 is used as an example for explanation. Under normal circumstances, the rack 28 is in the retracted position. When it is necessary to drive the first clamping roller 10 to rotate, the driving component 31 is directly started to drive the special-shaped block 39 to rotate, and the rotation of the special-shaped block 39 is used to push the rack 28 upward, pushing the rack 28 from the retracted position to the working position ( Figure 9 In the middle, the rack 28 on the lower plate 23 is in the working position, and the rack 28 on the upper plate 24 is in the retracted position) and then can be engaged with the gear 21.

[0035] Furthermore, the special-shaped block 39 includes a semicircular surface 40, a plane 41, and an arc surface 42 connected between the semicircular surface 40 and the plane 41; wherein, the center of the semicircular surface 40 falls on the axis of the rotating shaft 29, and the distance between the plane 41 and the axis of the rotating shaft 29 is greater than the distance between the semicircular surface 40 and the axis of the rotating shaft 29. When the rack 28 is in the working position, the plane 41 is in contact with the side of the rack 28 away from the teeth.

[0036] A method for drying a gypsum board, based on the above-mentioned device for drying a gypsum board, comprises the following steps: S1. Place a gypsum board 5 between each adjacent first frame 6 and second frame 7; S2, placing the placement rack 3 carrying the gypsum board 5 at the inlet position of the drying channel; S3, start the conveyor roller 1 and input dry hot air into the drying channel. The conveyor roller 1 causes the placement rack 3 to slowly move from the inlet to the outlet to dry the gypsum board 5 with the dry hot air; S31. During the movement of the placement rack 3, when one of the side surfaces of the regular polyhedron 22 comes into sliding contact with the backing plate 27, the first clamping roller 10 and the second clamping roller 15 cannot rotate, and the gypsum board 5 remains fixed. S32. When the gypsum board 5 needs to be moved to change the contact position between the first clamping roller 10 and the second clamping roller 15 and the gypsum board 5, the driving component 31 can be used to control the rack 28 on the lower plate 23 and the rack 28 on the upper plate 24 so that the rack 28 on the lower plate 23 and the rack 28 on the upper plate 24 can be raised or lowered at appropriate times. S321. After the rack 28 on the lower plate 23 rises to a predetermined height, when the regular polyhedron 22 separates from the backing plate 27, the gear 21 rotates clockwise under the action of the rack 28, driving the first clamping roller 10 to rotate clockwise, so that the gypsum board 5 above the first clamping roller 10 moves right and the gypsum board 5 below the first clamping roller 10 moves left, changing the contact position between the first clamping roller 10 and the second clamping roller 15 and the gypsum board 5; S322. After the rack 28 on the upper plate 24 drops to a predetermined height, when the regular polyhedron 22 separates from the pad 27, the gear 21 rotates counterclockwise under the action of the rack 28, driving the first clamping roller 10 to rotate counterclockwise, so that the gypsum board 5 above the first clamping roller 10 moves to the left and the gypsum board 5 below the first clamping roller 10 moves to the right.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for drying gypsum boards, comprising a conveyor roller, a housing, and a placement rack, wherein the housing cooperates with the conveyor roller to form a drying channel, the gypsum boards are placed on the placement rack, the conveyor roller is capable of moving the placement rack from an inlet to an outlet of the drying channel, and dry hot air is blown into the drying channel in a direction perpendicular to the extension direction of the drying channel, characterized in that: The placement rack includes a plurality of first racks and a plurality of second racks, wherein the first racks and the second racks are stacked and spaced apart; The first frame includes a first support frame and a plurality of second clamping rollers rotatably disposed in the first support frame; The second frame includes a second support frame and a plurality of first clamping rollers rotatably disposed in the second support frame; The gypsum board is clamped between the first clamping roller and the second clamping roller; Each of the second frames is correspondingly provided with a guide rail, and the first clamping roller performs intermittent forward and reverse rotations on the guide rail, so that the gypsum board performs intermittent lateral movement in the process of passing through the drying channel.

2. The device for drying gypsum board according to claim 1, characterized in that: The guide track includes a plurality of track units, each of which includes a lower plate, an upper plate, and a vertical portion fixedly connected between the lower plate and the upper plate. The vertical portion is fixedly connected to the housing, and a third air outlet is formed between two adjacent vertical portions. A first end shaft is coaxially fixed to the end of the first clamping roller, and a gear and a regular polyhedron are fixedly provided on the first end shaft; A plurality of pads are fixed at intervals on the upper surface of the lower plate; Racks that can be adjusted up and down are provided on both the lower plate and the upper plate.

3. The device for drying gypsum board according to claim 2, characterized in that: An L-shaped frame is fixed to both the lower plate and the upper plate, a vertically arranged guide rod is fixedly connected to the L-shaped frame, the rack is slidably arranged on the guide rod through a guide sleeve, and an elastic component is fixedly connected between the guide sleeve and the L-shaped frame; The lower plate and the upper plate are both rotatably connected to a rotating shaft, one end of the rotating shaft is connected to the output shaft of the driving component, and the other end is fixed with a special-shaped block; The driving component drives the special-shaped block to rotate through the rotating shaft, so that the rack performs a lifting motion.

4. The device for drying gypsum board according to claim 3, characterized in that: The special-shaped block includes a semicircular surface, a plane, and an arc surface connected between the semicircular surface and the plane; wherein the center of the semicircular surface falls on the axis of the rotating shaft, and the distance between the plane and the axis of the rotating shaft is greater than the distance between the semicircular surface and the axis of the rotating shaft.

5. The device for drying gypsum board according to claim 2, characterized in that: One end of the regular polyhedron is provided with a mounting groove, one end of the first end shaft is fixed with a mounting block, and the mounting block is fixedly installed inside the mounting groove by a fastener.

6. The device for drying gypsum board according to claim 1, characterized in that: The first support frame includes two second side frame plates, and the end of the second clamping roller is coaxially fixed with a second end shaft. The two second end shafts are rotatably connected to the two second side frame plates through second bearing seats. The ends of the two second side frame plates are fixedly connected by a second connecting rod, and a second air outlet is opened on the second side frame plate.

7. The device for drying gypsum board according to claim 2, characterized in that: The second support frame includes two first side frame plates, the first end shaft is rotatably connected to the first side frame plates through a first bearing seat, the ends of the two first side frame plates are fixedly connected by a first connecting rod, and a first air outlet is opened on the first side frame plate.

8. The device for drying gypsum board according to claim 2, characterized in that: The lower plate and the upper plate are both provided with slots, and the rack is slidably arranged inside the slots.

9. A method for drying gypsum board, characterized in that: The method for drying a gypsum board is based on the device for drying a gypsum board according to any one of claims 1 to 8, comprising the following steps: S1. Place a gypsum board between each adjacent first frame and second frame; S2. Place the rack carrying the gypsum board at the inlet of the drying channel; S3, start the conveyor roller machine and input dry hot air into the drying channel. The conveyor roller machine causes the placement rack to slowly move from the inlet to the outlet to dry the gypsum board with the dry hot air; S31. During the movement of the placement rack, when one of the side surfaces of the regular polyhedron comes into sliding contact with the backing plate, the first clamping roller and the second clamping roller cannot rotate, and the gypsum board remains fixed; S32. When the gypsum board needs to be moved to change the contact position between the first clamping roller and the second clamping roller and the gypsum board, the driving component can be used to control the rack on the lower plate and the rack on the upper plate so that the rack on the lower plate and the rack on the upper plate can be raised or lowered at appropriate times. S321. After the rack on the lower plate rises to a predetermined height, when the regular polyhedron separates from the backing plate, the gear rotates clockwise under the action of the rack, driving the first clamping roller to rotate clockwise, causing the gypsum board above the first clamping roller to move right and the gypsum board below the first clamping roller to move left, thereby changing the contact position between the first and second clamping rollers and the gypsum board; S322. After the rack on the upper plate drops to a predetermined height, when the regular polyhedron is separated from the pad, the gear will rotate counterclockwise under the action of the rack, driving the first clamping roller to rotate counterclockwise, so that the gypsum board above the first clamping roller moves to the left and the gypsum board below the first clamping roller moves to the right.

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