A plate-following device for a gypsum board dryer

Abstract

This invention belongs to the field of gypsum board processing technology and discloses a gypsum board tracking device for a gypsum board dryer, comprising: an accelerating roller conveyor, set at the feeding end of the slow section of the dryer, for accelerating the transport of gypsum boards; a photoelectric detection device, set at the junction of the accelerating roller conveyor and the slow section of the dryer, for detecting whether gypsum boards have passed; a timing device, connected to the photoelectric detection device, for recording the time interval between two groups of gypsum boards passing the photoelectric detection device; and a controller, connected to the accelerating roller conveyor and the timing device, the controller controlling the accelerating roller conveyor to accelerate the transport of gypsum boards to a preset time, after which the controller controls the accelerating roller conveyor to transport gypsum boards at the same speed as the slow section of the dryer; the accelerating roller conveyor in this invention can drive the gypsum boards to accelerate a second time, thereby effectively compensating for excessively large board spacing, ensuring that the next group of gypsum boards enters the slow section of the dryer at a reasonable spacing, and effectively preventing the problem of overheating at the board head.

Description

Technical Field

[0001] This invention relates to the field of gypsum board processing technology, and more specifically to a gypsum board drying machine with a board tracking device. Background Technology

[0002] During the processing of gypsum board, after the gypsum board is formed, it needs to be distributed to different drying layers of the dryer by the distribution bridge for drying treatment. After the gypsum board enters the drying layer, it is first fed by the acceleration roller conveyor, and then the acceleration roller conveyor accelerates the gypsum board to the slow section of the dryer for drying.

[0003] During the accelerated conveying of gypsum board via the accelerating roller conveyor, it is crucial to ensure that the distance between the currently conveyed gypsum board and the previous group remains within a preset range. Excessive distance can lead to overheating of the ends of the subsequent gypsum board. Currently, photoelectric sensing triggering is commonly used to control the acceleration and cessation of the gypsum board; that is, when the gypsum board is accelerated to the photoelectric sensing position, the accelerating roller conveyor stops transporting it.

[0004] However, the existing acceleration and stop method based on photoelectric sensing can only achieve single acceleration control of the gypsum board. If the distance between the two sets of gypsum boards still exceeds the preset range after a single acceleration, it is impossible to adjust and compensate for the distance a second time. Summary of the Invention

[0005] To address this issue, the present invention provides a gypsum board drying machine with a plate-tracking device, thereby solving the technical problem in the prior art that if the distance between two sets of gypsum boards still exceeds the preset range after a single acceleration, the distance cannot be adjusted and compensated for a second time.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] A gypsum board dryer with a plate-following device comprising:

[0008] An accelerating roller conveyor is installed at the feed end of the slow section of the dryer. The accelerating roller conveyor is used to accelerate the transport of gypsum board. The gypsum board is fed from the accelerating roller conveyor and is accelerated to be transported to the slow section of the dryer for drying.

[0009] A photoelectric detection device is installed at the junction of the accelerating roller conveyor and the slow section of the dryer to detect whether gypsum board has passed by.

[0010] A timing device is connected to the photoelectric detection device. The timing device is used to record the time interval between two consecutive sets of gypsum boards passing through the photoelectric detection device. When the photoelectric detection device detects that no board has passed, the timing device starts timing. When the photoelectric detection device detects that a board has passed, the timing device stops timing.

[0011] A controller is connected to the acceleration roller conveyor and the timing device. The controller controls the acceleration roller conveyor to accelerate the transport of gypsum board to a preset time. After the preset time, the controller controls the acceleration roller conveyor to transport gypsum board at the same speed as the slow section of the dryer.

[0012] The timing device sends the time interval it has measured to the controller, and the controller calculates the actual distance between the two sets of gypsum boards based on the time interval and the speed of the slow section of the dryer.

[0013] When the actual distance is less than or equal to the preset distance, the controller controls the acceleration roller conveyor to continue transporting gypsum board at the same speed as the slow section of the dryer. When the actual distance is greater than the preset distance, the controller controls the acceleration roller conveyor to accelerate the transport of gypsum board a second time to shorten the distance between the two sets of gypsum board.

[0014] The friction between the gypsum board and the accelerating roller conveyor is greater than the friction between the gypsum board and the slow-speed section roller conveyor of the dryer, so that when the gypsum board is partially transported onto the slow-speed section roller conveyor of the dryer, the gypsum board is still transported at the conveying speed of the accelerating roller conveyor.

[0015] Furthermore, the photoelectric detection device includes a light source emitter, a light source receiver, and a signal processing unit;

[0016] The light source emitter and the light source receiver are respectively disposed on both sides of the junction of the acceleration roller conveyor and the slow section of the dryer, and the light source receiver is used to receive the light source emitted by the light source emitter;

[0017] When a plasterboard passes between the two, the light beam emitted by the light source emitter is blocked, the light receiver outputs a first electrical signal, and the signal processing unit outputs a board detection signal based on the first electrical signal.

[0018] When a plasterboard-free object passes between the two, the light beam emitted by the light source emitter is not blocked, the light receiver outputs a second electrical signal, and the signal processing unit outputs a plasterboard-free detection signal based on the second electrical signal.

[0019] Furthermore, an acceleration photoelectric detector is installed at the feed inlet of the acceleration roller conveyor, and the acceleration photoelectric detector is connected to the controller;

[0020] The acceleration photoelectric detector is used to detect whether there is gypsum board feeding in the acceleration roller conveyor. When there is gypsum board feeding, the controller controls the acceleration roller conveyor to accelerate.

[0021] Furthermore, the accelerating roller conveyor includes:

[0022] Rotary rollers, multiple rotary rollers are arranged side by side along the gypsum board conveying direction, each of the rotary rollers rotates in the same direction, and the rotary rollers are used to convey gypsum board;

[0023] The transmission gear is installed at the end of each roller on the same side;

[0024] The roller chain is sequentially sleeved on the periphery of each of the transmission gears and meshes with each of the transmission gears;

[0025] A driven gear has an extension rod coaxially mounted on one of the drive gears on the side opposite to the roller, and the driven gear is mounted on the end of the extension rod away from the drive gear.

[0026] Furthermore, the acceleration roller conveyor also includes a first drive motor, a transmission chain, and a drive gear installed at the drive end of the first drive motor;

[0027] The transmission chain is sequentially sleeved on the driving gear and the driven gear, and is meshed with both the driving gear and the driven gear;

[0028] The first drive motor drives the drive gear to rotate, the drive gear drives the transmission chain and the driven gear to rotate, the driven gear drives the transmission gear and the roller chain connected to it to rotate, and the roller chain drives each of the transmission gears and the rotating roller to rotate.

[0029] Furthermore, the first drive motor is electrically connected to the controller.

[0030] Furthermore, two mounting brackets are symmetrically arranged along the gypsum board conveying direction, and both ends of each roller are mounted on the two mounting brackets via a first bearing;

[0031] A mounting housing is installed on the outer wall of one of the mounting plates, each of the transmission gears is disposed inside the mounting housing, and one end of each roller near the mounting housing extends into the mounting housing and is connected to the corresponding transmission gear.

[0032] The driven gear and the extension rod are located inside the mounting housing.

[0033] Furthermore, an anti-collision device is provided on at least one side of the feed end of the slow section of the dryer, along the gypsum board conveying direction. The anti-collision device is used to protect the previous group of gypsum boards so as to prevent the latter group of gypsum boards from hitting the tail of the former group of gypsum boards when the latter group of gypsum boards accelerates for the second time.

[0034] Furthermore, the anti-collision device includes:

[0035] A drive belt is provided along the direction of gypsum board conveying, and one end of the drive belt is flush with the feed end of the slow section of the dryer.

[0036] Anti-collision plates, one of the aforementioned anti-collision plates is installed on the outer wall of each end of the transmission belt;

[0037] At least two rollers are provided along the gypsum board conveying direction, and the conveyor belt is sequentially sleeved on the two rollers;

[0038] The second drive motor has its drive end connected to one side of one of the rollers. The second drive motor drives the roller connected to it to rotate, and the roller connected to it drives the transmission belt and the other roller to rotate. The transmission belt synchronously drives the two anti-collision plates to rotate.

[0039] When the anti-collision plate rotates to the side closer to the slow section of the dryer, the anti-collision plate extends at least partially into the slow section of the dryer.

[0040] Furthermore, the anti-collision device also includes a protective photoelectric detector, which is installed in the slow section of the dryer near the feed end and is connected to the second drive motor;

[0041] When the protective photoelectric detector detects the tail of the previous group of gypsum boards passing by, the second drive motor drives the transmission belt to rotate at the same speed as the slow speed section of the dryer, so as to drive the anti-collision plate to follow the tail of the previous group of gypsum boards.

[0042] Compared with the prior art, the present invention has the following advantages:

[0043] The accelerating roller conveyor in this invention can drive the gypsum board to accelerate a second time, thereby effectively compensating for excessively large board spacing. First, the initial acceleration distance of the gypsum board is controlled by a preset time. After the initial acceleration, the gypsum board is still on the accelerating roller conveyor. When the head of the gypsum board is transported to the tail end of the accelerating roller conveyor, the actual distance between the two sets of gypsum boards is detected. When the actual distance is greater than the preset distance, the accelerating roller conveyor is controlled to accelerate the gypsum board a second time, further shortening the spacing between the two sets of gypsum boards. The latter set of gypsum boards enters the slow section of the dryer with a reasonable spacing, effectively preventing the problem of over-burning of the board head. Attached Figure Description

[0044] 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.

[0045] Figure 1 This is a top view of a plate-following device for a gypsum board dryer, provided in an embodiment of the present invention.

[0046] Figure 2 This is a side view of the plate-following device of a gypsum board dryer provided in an embodiment of the present invention;

[0047] Figure 3 for Figure 1 A magnified structural diagram of A in the middle;

[0048] Figure 4 for Figure 2 A magnified structural diagram of B in the diagram.

[0049] The labels in the diagram represent the following:

[0050] 1. Accelerating roller conveyor; 2. Photoelectric detection device; 3. Accelerating photoelectric detector; 4. Mounting frame; 5. First bearing; 6. Mounting housing; 7. Anti-collision device; 8. Fixed long plate; 9. Support shaft; 10. Second bearing; 11. Slow speed section of dryer;

[0051] 101. Rotary roller; 102. Transmission gear; 103. Roller conveyor chain; 104. Driven gear; 105. Extension rod; 106. First drive motor; 107. Transmission chain; 108. Drive gear;

[0052] 201. Light source emitter; 202. Light source receiver;

[0053] 701. Drive belt; 702. Anti-collision plate; 703. Roller; 704. Second drive motor; 705. Protective photoelectric detector. Detailed Implementation

[0054] 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.

[0055] like Figure 1 As shown, the present invention provides a gypsum board dryer with a plate-following device, comprising:

[0056] Accelerating roller conveyor 1 is set at the feed end of the slow section 11 of the dryer. Accelerating roller conveyor 1 is used to accelerate the transport of gypsum board. The gypsum board is fed from accelerating roller conveyor 1 and is accelerated by accelerating roller conveyor 1 to be transported to the slow section 11 of the dryer for drying.

[0057] Photoelectric detection device 2 is installed at the junction of acceleration roller conveyor 1 and slow section 11 of dryer to detect whether gypsum board has passed by.

[0058] The timing device is connected to the photoelectric detection device 2. The timing device is used to record the time interval between the passing of two sets of plasterboards by the photoelectric detection device 2. When the photoelectric detection device 2 detects that no board has passed, the timing device starts timing. When the photoelectric detection device 2 detects that a board has passed, the timing device stops timing.

[0059] The controller is connected to the acceleration roller conveyor 1 and the timing device. The controller controls the acceleration roller conveyor 1 to accelerate the transport of gypsum board to a preset time. After the preset time, the controller controls the acceleration roller conveyor 1 to transport gypsum board at the same speed as the slow section 11 of the dryer.

[0060] The timing device sends the time interval it has measured to the controller, which calculates the actual distance between the two sets of gypsum boards based on the time interval and the speed of the slow section 11 of the dryer.

[0061] When the actual distance is less than or equal to the preset distance, the controller controls the acceleration roller 1 to continue transporting gypsum board at the same speed as the slow section 11 of the dryer. When the actual distance is greater than the preset distance, the controller controls the acceleration roller 1 to accelerate the transport of gypsum board a second time to shorten the distance between the two sets of gypsum board.

[0062] The friction between the gypsum board and the accelerating roller 1 is greater than the friction between the gypsum board and the slow section 11 roller of the dryer, so that when the gypsum board is partially transported to the slow section 11 roller of the dryer, the gypsum board is still transported at the conveying speed of the accelerating roller 1.

[0063] The accelerating roller conveyor 1 in this invention can drive the gypsum board to accelerate a second time, thereby effectively compensating for the excessive spacing between the boards. First, the initial acceleration distance of the gypsum board is controlled by a preset time. After the initial acceleration, the gypsum board is still on the accelerating roller conveyor 1. When the head of the gypsum board is transported to the tail end of the accelerating roller conveyor 1, the actual distance between the two groups of gypsum boards is detected. When the actual distance is greater than the preset distance, the accelerating roller conveyor 1 is controlled to accelerate the gypsum board a second time, further shortening the spacing between the two groups of gypsum boards. The latter group of gypsum boards enters the slow section 11 of the dryer with a reasonable spacing, effectively preventing the problem of over-burning of the board head.

[0064] This embodiment provides a gypsum board dryer with a secondary gypsum board feeding device, which is mainly aimed at the secondary feeding of gypsum boards in the drying layer of the dryer (the subsequent set of gypsum boards feeds the previous set of gypsum boards).

[0065] Specifically, a preset time (the initial acceleration transport time of the gypsum board on the acceleration roller 1) is first set, and it is ensured that the gypsum board is still on the acceleration roller 1 after the preset time. The acceleration roller 1 first accelerates the transport of the gypsum board to the preset time, and then transports the gypsum board at the speed of the slow section 11 of the dryer until the gypsum board is transported to the junction of the acceleration roller 1 and the slow section 11 of the dryer. The photoelectric detection device 2 works in conjunction with the timing device to detect the time interval between the tail of the previous group of gypsum board and the head of the next group of gypsum board. The controller calculates the actual distance between the two groups of gypsum board based on the time interval and the speed of the slow section 11 of the dryer. The actual distance is compared with the preset distance. Based on the comparison result, the speed of the acceleration roller 1 transporting the gypsum board is controlled (accelerated or kept at the original speed).

[0066] During the secondary acceleration of the gypsum board, part of the board has already entered the slow section 11 of the dryer. If the friction of the rollers in the slow section 11 of the dryer is greater, the gypsum board will be "dragged" by the slow section, and the acceleration roller 1 will slip, making it impossible to achieve secondary acceleration. The transport speed of the gypsum board depends on the one with greater friction. Therefore, the friction of the acceleration roller 1 needs to be greater.

[0067] Since a dryer contains multiple drying layers, in actual use, a gypsum board tracking device is required for each drying layer. The preset time, initial acceleration speed, second acceleration time, and second acceleration speed of the acceleration roller 1 for the gypsum board in each layer can be controlled individually according to the actual situation of each layer.

[0068] The timing device is a conventional timer in the prior art. Its input end is connected to the photoelectric detection device 2, and its output end is connected to the controller. It is used to send the detected time interval signal to the controller in real time.

[0069] like Figure 1 As shown, the photoelectric detection device 2 includes a light source emitter 201, a light source receiver 202, and a signal processing unit;

[0070] The light source emitter 201 and the light source receiver 202 are respectively located on both sides of the junction of the acceleration roller conveyor 1 and the slow section 11 of the dryer. The light source receiver 202 is used to receive the light source emitted by the light source emitter 201.

[0071] When a plasterboard passes between the two, the light beam emitted by the light source emitter 201 is blocked, the light receiver outputs the first electrical signal, and the signal processing unit outputs a board detection signal according to the first electrical signal.

[0072] When the plasterboard passes between the two, the light beam emitted by the light source emitter 201 is not blocked, the light receiver outputs a second electrical signal, and the signal processing unit outputs a plasterboard-free detection signal based on the second electrical signal.

[0073] When gypsum board is fed into the drying layer, in order to trigger the acceleration roller 1 to accelerate, an acceleration photoelectric detector 3 is set at the feed inlet of each acceleration roller 1, and the acceleration photoelectric detector 3 is connected to the controller.

[0074] The acceleration photoelectric detector 3 is used to detect whether there is gypsum board feeding in the acceleration roller conveyor 1. When there is gypsum board feeding, the controller controls the acceleration roller conveyor 1 to accelerate.

[0075] The accelerated photodetector 3 is a conventional photodetector component in the prior art.

[0076] like Figure 1 , Figure 3 As shown, the accelerating roller conveyor 1 is used to accelerate the feeding of gypsum board. The accelerating roller conveyor 1 includes:

[0077] Rotary rollers 101 are arranged side by side along the gypsum board conveying direction. Each rotary roller 101 rotates in the same direction and is used to convey gypsum board.

[0078] A transmission gear 102 is installed at the end of each roller 101 on the same side.

[0079] The roller chain 103 is sequentially sleeved on the periphery of each transmission gear 102 and meshes with each transmission gear 102.

[0080] Driven gear 104, with an extension rod 105 coaxially mounted on one of the drive gears 102 on the side away from the roller 101, driven gear 104 mounted on the end of extension rod 105 away from the drive gear 102.

[0081] The acceleration roller conveyor 1 also includes a first drive motor 106, a transmission chain 107, and a drive gear 108 installed at the drive end of the first drive motor 106;

[0082] The transmission chain 107 is sequentially sleeved on the driving gear 108 and the driven gear 104, and is meshed with both the driving gear 108 and the driven gear 104.

[0083] The first drive motor 106 drives the drive gear 108 to rotate, the drive gear 108 drives the transmission chain 107 and the driven gear 104 to rotate, the driven gear 104 drives the transmission gear 102 and the roller chain 103 connected to it to rotate, and the roller chain 103 drives each transmission gear 102 and the rotating roller 101 to rotate.

[0084] The first drive motor 106 is electrically connected to the controller.

[0085] The controller controls the driving frequency and output time of the first drive motor 106, and controls the preset time, initial acceleration speed, second acceleration time, and second acceleration speed of the gypsum board for the first acceleration.

[0086] like Figure 4 As shown, in order to install the components in the acceleration roller conveyor 1 at the feed end of the slow section 11 of the dryer, two mounting plates 4 are symmetrically arranged along the gypsum board conveying direction. Both ends of each roller 101 are mounted on the two mounting plates 4 through the first bearing 5.

[0087] A mounting housing 6 is installed on the outer wall of one of the mounting plate frames 4. Each transmission gear 102 is set inside the mounting housing 6. One end of each roller 101 near the mounting housing 6 passes through the mounting housing 6 and is connected to the corresponding transmission gear 102.

[0088] The driven gear 104 and the extension rod 105 are located inside the mounting housing 6.

[0089] Based on the actual transportation conditions of gypsum boards within each drying layer, the secondary acceleration time and speed of the gypsum boards are controlled to minimize the distance between the two sets of gypsum boards. However, if a misjudgment occurs, excessive acceleration may lead to collisions between the two sets of gypsum boards. To prevent the latter set of gypsum boards from colliding with the former during secondary acceleration, this invention incorporates the following design, specifically, as follows: Figure 1 , Figure 2 As shown, an anti-collision device 7 is provided on at least one side of the feed end of the slow section 11 of the dryer and along the gypsum board conveying direction. The anti-collision device 7 is used to protect the previous group of gypsum boards so as to prevent the next group of gypsum boards from hitting the tail of the previous group of gypsum boards when the next group of gypsum boards accelerates for the second time.

[0090] The anti-collision device 7 includes:

[0091] The drive belt 701 is arranged along the gypsum board conveying direction, and one end of the drive belt 701 is flush with the feed end of the slow section 11 of the dryer.

[0092] Anti-collision plate 702: One anti-collision plate 702 is installed on the outer wall of each end of the transmission belt 701;

[0093] Rollers 703, at least two rollers 703 are provided along the gypsum board conveying direction, and the conveyor belt is sequentially sleeved on the two rollers 703;

[0094] The second drive motor 704 has its drive end connected to one side of one of the rollers 703. The second drive motor 704 drives the roller 703 connected to it to rotate. The roller 703 connected to it drives the transmission belt 701 and the other roller 703 to rotate. The transmission belt 701 synchronously drives the two anti-collision plates 702 to rotate.

[0095] When the anti-collision plate 702 rotates to the side close to the slow section 11 of the dryer, the anti-collision plate 702 extends at least partially into the slow section 11 of the dryer.

[0096] The anti-collision plate 702 rotates synchronously with the transmission belt 701. Before the second acceleration of the next group of gypsum boards, it extends into the slow section 11 of the dryer and forms a physical block on the tail of the previous group of gypsum boards. If the next group of gypsum boards accelerates excessively, it will collide with the anti-collision plate 702, thereby protecting the gypsum boards in front and preventing the gypsum boards in front from becoming disordered as much as possible.

[0097] Since the second set of gypsum boards is still dry and in a relatively soft state before the second acceleration, the anti-collision plate 702 is made of a soft material to prevent it from deforming after hitting the anti-collision plate 702.

[0098] One end of the conveyor belt is flush with the feed end of the slow section 11 of the dryer. The anti-collision plate 702 is set at the end of the transmission belt 701, so that when the gypsum board is fully entered into the slow section 11 of the dryer, the rotation of the transmission belt 701 will drive the anti-collision plate 702 near the feed end of the slow section 11 of the dryer to extend into the drying layer and protect the tail of the gypsum board in time.

[0099] The conveyor belt rotates along the direction of gypsum board transportation.

[0100] To ensure continuous and effective protection, the lengths of the front group of gypsum boards, the rear group of gypsum boards, and both ends of the transmission belt 701 are all equal. When the anti-collision plate 702 near the feed end of the slow section 11 of the dryer rotates to a position away from the feed end of the slow section 11 of the dryer and protects the tail of the front group of gypsum boards, the anti-collision plate 702 away from the feed end of the slow section 11 of the dryer rotates synchronously to a position near the feed end of the slow section 11 of the dryer, thus achieving alternating protection for the tail of the rear group of gypsum boards.

[0101] The anti-collision device 7 also includes a protective photoelectric detector 705, which is installed in the slow section 11 of the dryer near the feed end and is connected to the second drive motor 704.

[0102] When the protective photoelectric detector 705 detects the tail of the previous group of gypsum board passing by, the second drive motor 704 drives the transmission belt 701 to rotate at the same speed as the slow section 11 of the dryer, so as to drive the anti-collision plate 702 to follow the tail of the previous group of gypsum board.

[0103] The protective photoelectric detector 705 is located in the slow section 11 of the dryer near the feed end, that is, downstream of the feed end. On the one hand, it ensures that the tail of the gypsum board passes the anti-collision plate 702 near the feed end of the slow section 11 of the dryer before passing the protective photoelectric detector 705. When the protective photoelectric detector 705 is triggered, the second drive motor 704 drives the anti-collision plate 702 to rotate, so that the anti-collision plate 702 moves behind the tail of the gypsum board to protect the tail. On the other hand, when the tail of the previous group of gypsum boards passes the protective photoelectric detector 705, it indicates that it has just left the upstream acceleration roller 1, and the next group of gypsum boards has not yet entered the acceleration stage. This avoids the risk of collision between the two groups of boards in terms of timing.

[0104] The second drive motor 704 drives the transmission belt 701 to keep synchronized with the conveying speed of the slow section 11 of the dryer. This design ensures that the anti-collision plate 702 can follow behind the tail of the gypsum board, effectively preventing the anti-collision plate 702 from pushing the preceding gypsum board due to excessive speed, and preventing interference with the normal conveying and drying process of the board.

[0105] In order to install the anti-collision device 7 on the side of the slow section 11 of the dryer, a fixed long plate 8 is provided on the side of the slow section 11 of the dryer along the gypsum board conveying direction. Support shafts 9 are installed at both ends of the top of the fixed long plate 8, and two rollers 703 are respectively installed on the top of the two support shafts 9.

[0106] One of the rollers 703 has a mounting hole, and a second bearing 10 is fixedly installed in the mounting hole. One of the support shafts 9 is connected to the roller 703 with the mounting hole through the second bearing 10.

[0107] The second drive motor 704 is fixedly mounted at the bottom of the fixed long plate 8, and its drive end passes through the fixed long plate 8 and is connected to the bottom of another support shaft 9.

[0108] 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 plate-following device for a gypsum board dryer, characterized in that, have: An accelerating roller conveyor (1) is set at the feed end of the slow section (11) of the dryer. The accelerating roller conveyor (1) is used to accelerate the transport of gypsum board. The gypsum board is fed from the accelerating roller conveyor (1) and is accelerated by the accelerating roller conveyor (1) to be transported to the slow section (11) of the dryer for drying. A photoelectric detection device (2) is installed at the junction of the acceleration roller conveyor (1) and the slow section (11) of the dryer to detect whether gypsum board has passed by. A timing device is connected to the photoelectric detection device (2). The timing device is used to record the time interval between the passing of two sets of gypsum boards by the photoelectric detection device (2). When the photoelectric detection device (2) detects that no board has passed, the timing device starts timing. When the photoelectric detection device (2) detects that a board has passed, the timing device stops timing. The controller connects the acceleration roller conveyor (1) and the timing device. The controller controls the acceleration roller conveyor (1) to accelerate the transport of gypsum board to a preset time. After the preset time, the controller controls the acceleration roller conveyor (1) to transport gypsum board at the same speed as the slow section (11) of the dryer. The timing device sends the time interval it has measured to the controller, and the controller calculates the actual distance between the two sets of gypsum boards based on the time interval and the speed of the slow section (11) of the dryer. When the actual distance is less than or equal to the preset distance, the controller controls the acceleration roller conveyor (1) to continue transporting gypsum board at the same speed as the slow section (11) of the dryer. When the actual distance is greater than the preset distance, the controller controls the acceleration roller conveyor (1) to accelerate the transport of gypsum board for a second time, so as to shorten the distance between the two sets of gypsum board. The friction between the gypsum board and the accelerating roller (1) is greater than the friction between the gypsum board and the slow section (11) roller of the dryer, so that when the gypsum board is partially transported to the slow section (11) roller of the dryer, the gypsum board is still transported at the conveying speed of the accelerating roller (1).

2. The gypsum board drying machine's plate-following device according to claim 1, characterized in that, The photoelectric detection device (2) includes a light source emitter (201), a light source receiver (202), and a signal processing unit; The light source emitter (201) and the light source receiver (202) are respectively disposed on both sides of the junction of the acceleration roller (1) and the slow section (11) of the dryer. The light source receiver (202) is used to receive the light source emitted by the light source emitter (201). When a plasterboard passes between the two, the light beam emitted by the light source emitter (201) is blocked, the light receiver outputs a first electrical signal, and the signal processing unit outputs a board detection signal according to the first electrical signal; When the plasterboard passes between the two, the light beam emitted by the light source emitter (201) is not blocked, the light receiver outputs a second electrical signal, and the signal processing unit outputs a plasterboard-free detection signal according to the second electrical signal.

3. The gypsum board drying machine's plate-following device according to claim 1, characterized in that, An acceleration photoelectric detector (3) is provided at the feed inlet of the acceleration roller conveyor (1), and the acceleration photoelectric detector (3) is connected to the controller; The acceleration photoelectric detector (3) is used to detect whether there is gypsum board feeding in the acceleration roller conveyor (1). When there is gypsum board feeding, the controller controls the acceleration roller conveyor (1) to accelerate.

4. The gypsum board drying machine's plate-following device according to claim 1, characterized in that, The accelerating roller conveyor (1) includes: A plurality of rollers (101) are arranged side by side along the gypsum board conveying direction, and each roller (101) rotates in the same direction. The rollers (101) are used to convey gypsum board. The transmission gear (102) is installed at the end of each roller (101) on the same side. Roller chain (103) is sequentially sleeved on the periphery of each of the transmission gears (102) and meshes with each of the transmission gears (102); A driven gear (104) has an extension rod (105) coaxially mounted on one of the drive gears (102) on the side opposite to the roller (101), and the driven gear (104) is mounted on the end of the extension rod (105) away from the drive gear (102).

5. The gypsum board drying machine's plate-following device according to claim 4, characterized in that, The acceleration roller conveyor (1) also includes a first drive motor (106), a transmission chain (107), and a drive gear (108) installed at the drive end of the first drive motor (106). The transmission chain (107) is sequentially sleeved on the driving gear (108) and the driven gear (104), and is meshed with both the driving gear (108) and the driven gear (104); The first drive motor (106) drives the drive gear (108) to rotate, the drive gear (108) drives the transmission chain (107) and the driven gear (104) to rotate, the driven gear (104) drives the transmission gear (102) and the roller chain (103) connected to it to rotate, and the roller chain (103) drives each of the transmission gears (102) and the rotating roller (101) to rotate.

6. The gypsum board dryer's plate-following device according to claim 5, characterized in that, The first drive motor (106) is electrically connected to the controller.

7. The gypsum board drying machine's plate-following device according to claim 6, characterized in that, Two mounting brackets (4) are symmetrically arranged along the gypsum board conveying direction, and both ends of each roller (101) are mounted on the two mounting brackets (4) through the first bearing (5); An installation housing (6) is installed on the outer wall of one of the mounting brackets (4), each of the transmission gears (102) is disposed in the installation housing (6), and one end of each roller (101) near the installation housing (6) extends into the installation housing (6) and is connected to the corresponding transmission gear (102). The driven gear (104) and the extension rod (105) are located inside the mounting housing (6).

8. The gypsum board drying machine's plate-following device according to claim 1, characterized in that, At least one side of the feed end of the slow section (11) of the dryer is provided with an anti-collision device (7) along the gypsum board conveying direction. The anti-collision device (7) is used to protect the previous group of gypsum boards so as to prevent the next group of gypsum boards from hitting the tail of the previous group of gypsum boards when the next group of gypsum boards accelerates for the second time.

9. The gypsum board dryer's plate-following device according to claim 8, characterized in that, The anti-collision device (7) includes: A drive belt (701) is provided along the gypsum board conveying direction, and one end of the drive belt (701) is flush with the feed end of the slow section (11) of the dryer. Anti-collision plate (702): One anti-collision plate (702) is installed on the outer wall of each end of the transmission belt (701); At least two rollers (703) are provided along the gypsum board conveying direction, and the conveyor belt is sequentially sleeved on the two rollers (703); The second drive motor (704) has its drive end connected to one side of one of the rollers (703). The second drive motor (704) drives the roller (703) connected to it to rotate. The roller (703) connected to it drives the transmission belt (701) and the other roller (703) to rotate. The transmission belt (701) synchronously drives the two anti-collision plates (702) to rotate. When the anti-collision plate (702) rotates to the side close to the slow section (11) of the dryer, the anti-collision plate (702) extends at least partially into the slow section (11) of the dryer.

10. The gypsum board drying machine's plate-following device according to claim 9, characterized in that, The anti-collision device (7) also includes a protective photoelectric detector (705), which is installed in the slow section (11) of the dryer near the feed end and is connected to the second drive motor (704). When the protective photoelectric detector (705) detects the tail of the previous group of gypsum board passing by, the second drive motor (704) drives the transmission belt (701) to rotate at the same speed as the slow section (11) of the dryer, so as to drive the anti-collision plate (702) to rotate with the tail of the previous group of gypsum board.

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