A device and method for preparing a waterproof layer on a surface of a gypsum board

Abstract

The application discloses a kind of preparation devices of gypsum board surface waterproof layer, install on gypsum board forming machine, device includes support, roll coating mechanism, for the pressure between roll coating face and lower face paper is inducted and exports pressure value data pressure induction mechanism, for driving roll coating mechanism moves driving control component for driving roll coating mechanism moves;Wherein, pressure induction mechanism is connected with driving control component, after driving control component receives pressure value data, the distance between roll coating face and lower face paper is adjusted to adjust the roll coating distance of roll coating mechanism on lower face paper.It also includes a preparation method.The application can realize the movement of roll and lower face paper between the type without improving the existing gypsum board production line, solve the problem that roll cannot be full printed on the lower surface of lower face paper due to the movement of lower face paper.

Description

Technical Field

[0001] This invention relates to the field of gypsum board preparation technology, and specifically to an apparatus and method for preparing a waterproof layer on the surface of gypsum board. Background Technology

[0002] In the production process of gypsum board, to improve its waterproof effect, waterproof additives are often added inside the gypsum board, or waterproof materials are applied to the facing paper of the gypsum board, so that a waterproof film is formed on the front of the gypsum board (such as...). Figure 1 The gypsum board shown is used to improve its waterproof effect and prevent it from absorbing water and cracking.

[0003] To achieve rapid application of the waterproof membrane, a roller coating mechanism can be added to the existing production line to apply the waterproof liquid onto the gypsum board, achieving full coverage. However, in the actual preparation process, the lower facing paper is easily tilted vertically and horizontally during movement on the forming machine due to the influence of the gypsum slurry. This makes it difficult for the roller coating mechanism to conform to the shape of the facing paper. Furthermore, since the waterproof membrane needs to be roller-coated onto the lower facing paper, it must be applied from bottom to top. The aforementioned simple roller coating device cannot automatically conform to the shape of the lower facing paper, which further leads to voids on the lower facing paper without catalytic hydroxyl silicone oil. This results in changes in the amount of coating applied, inconsistent waterproof performance on the board, and the production of defective boards. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus and method for preparing a waterproof layer on the surface of gypsum board, so as to solve the technical problem that the waterproof membrane is difficult to fully coat as the facing paper moves in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0006] This invention provides an apparatus for preparing a waterproof layer on the surface of gypsum board, which is installed on a gypsum board forming machine and includes:

[0007] A support frame is installed at the bottom of the molding machine;

[0008] A roller coating mechanism is mounted on the support. The roller coating mechanism is provided with a roller coating surface for roller coating and a liquid-carrying surface for absorbing material. When the roller coating surface is attached to the lower cover paper, it can perform roller coating on the lower cover paper.

[0009] A feeding mechanism is provided on the side of the molding machine, and the feeding mechanism is used to deliver catalytic hydroxyl silicone oil to the liquid carrier surface;

[0010] A pressure sensing mechanism is used to sense the pressure between the roller coating surface and the lower protective paper and output pressure value data;

[0011] A drive control component is mounted on the bracket, and the drive control component is used to drive the roller coating mechanism to move.

[0012] The pressure sensing mechanism is communicatively connected to the drive control component. After receiving the pressure value data, the drive control component adjusts the coating distance of the roller coating mechanism on the lower protective paper by adjusting the distance between the roller coating surface and the lower protective paper.

[0013] In a preferred embodiment of the present invention, the pressure sensing mechanism is disposed on the roller coating mechanism, and the pressure sensing surface of the pressure sensing mechanism is at the same horizontal height as the roller coating surface.

[0014] Specifically, when the pressure value output by the pressure sensing mechanism is a preset standard pressure, the drive control component remains stationary; when the pressure value is greater than the standard pressure, the drive control component drives the roller coating mechanism to descend until the pressure value equals the standard pressure; when the pressure value is less than the standard pressure, the drive control component drives the roller coating mechanism to rise until the pressure value equals the standard pressure.

[0015] As a preferred embodiment of the present invention, the pressure sensing mechanism includes a first pressure-sensing plate and a second pressure-sensing plate respectively disposed on the left and right sides of the roller coating mechanism, wherein the first pressure-sensing plate and the second pressure-sensing plate are at the same height as the roller coating surface;

[0016] The roller coating mechanism is provided with a set of drive control components at both ends. The first pressure plate and the second pressure plate are respectively corresponding to the two sets of drive control components and respectively send corresponding pressure values ​​to the corresponding drive control components. When the pressure value of the first pressure plate or the second pressure plate changes, the drive control components control the roller coating mechanism to tilt left and right, so that the roller coating surface and the lower cover paper follow the shape.

[0017] In a preferred embodiment of the present invention, both the first pressure-sensing plate and the second pressure-sensing plate are fixed on the bracket by an L-shaped corner bracket, and the L-shaped corner bracket moves with the roller coating mechanism via the bracket.

[0018] The top of the L-shaped bracket drives the first pressure-sensing plate and the second pressure-sensing plate to extend towards the roller coating surface.

[0019] As a preferred embodiment of the present invention, the first pressure-sensing plate includes an upstream plate installed upstream of the roller coating mechanism and a downstream plate installed downstream of the roller coating mechanism. In the initial state, both the upstream plate and the downstream plate are at the same height as the roller coating surface.

[0020] Specifically, when the pressure values ​​of the upstream plate and the downstream plate are the same, the output is the pressure value; when the pressure values ​​of the upstream plate and the downstream plate are different, the output is a rotation adjustment signal. The drive control component receives the rotation adjustment signal and drives the roller coating mechanism to rotate until the pressure values ​​of the upstream plate and the downstream plate are the same.

[0021] As a preferred embodiment of the present invention, the roller coating mechanism includes a ceramic anilox roller and a full-printing rubber roller that are continuously driven by a rotation drive motor. The ceramic anilox roller and the full-printing rubber roller are both mounted on the bracket and are in contact during rotation. The full-printing rubber roller is located above the ceramic anilox roller.

[0022] The liquid-carrying surface is disposed on the ceramic anilox roller, and the liquid-carrying surface is connected to the feeding mechanism through the pump body;

[0023] The full-printing roller is in uniform contact with the liquid-carrying surface during rotation. The roller coating surface is located at the top of the full-printing roller. The full-printing roller continuously and quantitatively transfers the hydroxyl silicone oil on the ceramic anilox roller to the lower protective paper.

[0024] The drive control component is located at the bottom of the bracket.

[0025] As a preferred embodiment of the present invention, an adjusting handwheel is provided between the ceramic anilox roller and the full-print printing roller and the support, and the adjusting handwheel can adjust the distance between the ceramic anilox roller and the full-print printing roller and the support respectively.

[0026] As a preferred embodiment of the present invention, the drive control assembly includes a control assembly and a telescopic pump installed at the bottom of the bracket, wherein a rotation drive gear is provided at the bottom of the telescopic pump.

[0027] The second pressure-sensing plate, the upstream plate, the downstream plate, the telescopic pump, and the rotation drive gear are all communicatively connected to the control component.

[0028] As a preferred embodiment of the present invention, the feeding mechanism includes a stirring vessel, which is installed on the side of the molding machine. The stirring vessel is provided with a mixing chamber. The stirring vessel draws hydroxyl silicone oil and curing agent into the mixing chamber through a fractionation pipe and mixes them thoroughly to obtain the catalytic hydroxyl silicone oil.

[0029] The present invention also provides a method for preparing a waterproof layer on the surface of gypsum board.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] The present invention provides a pressure sensing mechanism between the roller coating mechanism and the lower cover paper. The pressure sensing mechanism is used to sense the pressure between the roller coating surface and the lower cover paper and output pressure value data. The pressure value data is received by the drive control component, and the roller coating mechanism and the cover paper are driven to move in a conformal manner through the pressure value data, thereby solving the problem that the roller cannot fully print on the lower surface of the lower cover paper due to the movement of the lower cover paper.

[0032] Furthermore, the coating amount is controlled to 30-50 g / m² by adjusting the pressure. 2 It controls the uniformity of roller coating, has no impact on the materials generated on the production line throughout the process, does not affect production efficiency, and can improve the coating efficiency and uniformity of the waterproof membrane, ensuring more uniform waterproof performance of gypsum board and reducing the generation of waste boards. Attached Figure Description

[0033] 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.

[0034] Figure 1 A structural schematic diagram of a waterproof gypsum board is provided for this invention;

[0035] Figure 2 A schematic flowchart of the preparation process of waterproof gypsum board is provided for this invention;

[0036] Figure 3 A schematic diagram of the apparatus for preparing a waterproof layer on the surface of gypsum board is provided for this invention.

[0037] Figure 4 Provided for the present invention Figure 3 A partial structural schematic diagram of the pressure sensing mechanism in the illustrated embodiment;

[0038] Figure 5 Provided for the present invention Figure 3 A schematic diagram of the side structure of the L-shaped corner bracket in the illustrated embodiment;

[0039] Figure 6 Provided for the present invention Figure 3 A schematic diagram of the roller coating mechanism in the illustrated embodiment.

[0040] The labels in the diagram represent the following:

[0041] 001-Core board; 002-Upper protective paper; 003-Lower protective paper; 004-Silicone rubber film;

[0042] 1-Roller coating mechanism; 2-Feeding mechanism; 3-Pressure sensing mechanism; 4-Drive control assembly; 5-Bracket; 6-Adjusting handwheel;

[0043] 101-Ceramic anilox roller; 102-Full-page printing roller; 103-Pump body;

[0044] 201 - Stirring vessel; 202 - Dispensing pipe;

[0045] 301 - First pressure plate; 302 - Second pressure plate; 303 - L-shaped corner bracket;

[0046] 3011 - Upstream board; 3012 - Downstream board;

[0047] 401 - Telescopic pump; 402 - Rotary drive gear. Detailed Implementation

[0048] 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.

[0049] like Figure 1 As shown, the present invention provides a waterproof gypsum board, comprising a core 001 containing hydrogen-containing silicone oil and upper protective paper 002 and lower protective paper 003 respectively attached to the upper and lower sides of the core 001. The core 001 contains a small amount of hydrogen-containing silicone oil, which enables the core 001 itself to have an internal waterproof function, making it difficult for water molecules to penetrate the core 001 and enter the interior of the gypsum board, thus preventing the gypsum board from becoming damp and cracking, thereby improving its waterproof function from the inside.

[0050] Furthermore, in order to ensure the connection between the core 001 and the protective paper and to prevent the protective paper from getting damp and cracking, a silicone rubber film 004 is provided on the bottom surface of the lower protective paper 003. The silicone rubber film 004 is a waterproof film, which gives the lower protective paper 003 an external waterproof function.

[0051] First, by improving the raw materials of the core 001, the water absorption characteristics of the gypsum board itself are improved, thereby reducing the degree of moisture absorption of the gypsum board. Second, since the lower protective paper 003 plays the role of supporting the gypsum board body most of the time, a waterproof silicone rubber film 004 is provided on the outside of the lower protective paper 003 of the present invention to prevent moisture from seeping into the core 001 from the position of the lower protective paper 003, thereby further improving the waterproof performance.

[0052] In the gypsum board of the present invention, there is no waterproof membrane on the upper protective paper 002. The main reason is that the upper protective paper 002 plays a role in ventilation on the gypsum board. As moisture can still enter from the joint between the gypsum board and the protective paper, the moisture in the core 001 will evaporate from the upper protective paper 002. Although the adhesion between the upper protective paper 002 and the core 001 of the gypsum board is easily affected, the supporting performance of the gypsum board is mainly provided by the lower protective paper, so the impact on the supporting performance of the gypsum board itself is small.

[0053] To ensure good waterproof performance of the 001 core board, the hydrogen-containing silicone oil must meet the following conditions: hydrogen content 1.55-1.65%, viscosity 15-30 mm at 25℃. 2 / s, volatile matter ≤2%.

[0054] Studies have shown that the addition of hydrogen-containing silicone oil has a certain impact on the production of gypsum board core 001. If the amount of hydrogen-containing silicone oil added is too small, it will reduce its waterproof effect and increase its water absorption rate. If the amount of hydrogen-containing silicone oil added is too large, although the water absorption rate of gypsum board core 001 itself will decrease, its drying speed and setting speed will change, and its surface properties will also change, making it difficult to bond with the facing paper, which will have a greater impact on its supporting performance.

[0055] Therefore, preferably, based on the square meter of core board 001, the amount of hydrogen-containing silicone oil added is 20-30 g / m². 2 .

[0056] The waterproof silicone rubber membrane 004 is composed of catalyzed hydroxyl silicone oil. Hydroxyl silicone oil itself is easy to use in fabrics, especially after catalysis, it has excellent waterproof properties. In particular, when the catalyzed hydroxyl silicone oil is combined with the lower protective paper 003, it will not affect the bonding effect between the lower protective paper 003 and the core board 001, nor will it affect the subsequent overlap between gypsum boards.

[0057] To maximize the effectiveness of the waterproof layer, based on the square meter of core board 001, the addition amount of catalyzed hydroxyl silicone oil is 30-50 g / m². 2 This film thickness is also used to ensure rapid drying and film formation during production, preventing the catalyzed hydroxyl silicone oil from overflowing from the lower protective paper 003 and dripping onto both sides of the gypsum board.

[0058] Silicone rubber film 004 is formed by catalysis of hydroxyl silicone oil and curing agent. By mass, the ratio of hydroxyl silicone oil to curing agent is 100:5.

[0059] Preferably, the curing agent is a mixture of dibutyltin dibutylsilicate and tetraethyl orthosilicate.

[0060] This invention provides an optimized gypsum board, which contains an internal waterproof gypsum board core 001 and an external waterproof protective paper, ensuring that it has good water-resistant properties and good breathability, so that a small amount of water vapor absorbed can leave through the upper protective paper without affecting the bonding effect between the core and the lower protective paper, thus ensuring its support performance.

[0061] like Figure 2 As shown, the present invention further provides a method for preparing gypsum board, comprising the following steps:

[0062] The curing agent is mixed with hydroxyl silicone oil, and the hydroxyl silicone oil is completely catalyzed by the curing agent to form silicone rubber.

[0063] The raw materials are mixed with hydrogen-containing silicone oil to obtain gypsum slurry;

[0064] Plaster slurry is poured between the upper and lower facing paper to form a continuous board;

[0065] The silicone rubber liquid is roller coated onto the bottom of the lower protective paper, and the silicone rubber liquid forms a film at the bottom of the lower protective paper to form a silicone rubber film.

[0066] Cut the connecting plate to obtain multiple gypsum blocks;

[0067] The gypsum blocks are sequentially fed into drying zone one and drying zone two for drying. After drying, waterproof gypsum is obtained.

[0068] In this invention, the roller coating step can be set either before or after the gypsum slurry is poured. Since it has no effect on the film-forming process of the silicone rubber liquid, i.e., the catalyzed hydroxyl silicone oil, the roller coating step can be set at any position before drying.

[0069] Because the lower protective paper 003 contains a silicone rubber film 004, the drying process of the gypsum board must be precisely controlled. If the existing drying process and parameters are used directly, the moisture in the gypsum board core 001 will easily be discharged from the lower protective paper 003, causing the adhesion between the lower protective paper 003 and the gypsum board core 001 to weaken, the lower protective paper 003 to blister, and waste boards to be produced.

[0070] To solve this problem, the gypsum blocks need to be sequentially fed into drying zone one and drying zone two for drying. After drying, waterproof gypsum is obtained.

[0071] Specifically, the gypsum blocks are dried in the first drying zone for 10 to 20 minutes, and the outlet temperature of the first drying zone is 120 to 125°C.

[0072] The gypsum slurry blocks exiting the first drying zone enter the second drying zone for drying for 25-35 minutes. The outlet temperature of the second drying zone is 86-92℃. The gypsum boards exiting the second drying zone are then trimmed and edged before being produced.

[0073] Furthermore, to prevent moisture backflow, the circulating fan frequency of the dryers used in drying zones one and two is 45~50HZ.

[0074] Examples 1-3 are provided below to verify the waterproof performance of gypsum board.

[0075] Examples 1-3 were performed according to the following steps:

[0076] Step S10: Stir and mix the raw material gypsum powder, additives, water, and hydrogen-containing silicone oil to obtain gypsum slurry. Pour the obtained gypsum slurry between two layers of facing paper. Roll the catalyzed hydroxyl silicone oil onto the front of the gypsum board of the lower facing paper. After forming, cut to obtain multiple gypsum slurry blocks.

[0077] Step S20: The gypsum block is dried in drying zone 1 for 10-20 minutes, and the outlet temperature of drying zone 1 is 120-125℃;

[0078] Step S30: The gypsum slurry blocks from drying zone one enter drying zone two and dry for 25-35 minutes. The outlet temperature of drying zone two is 86-92℃. The gypsum boards from drying zone two are produced after edge trimming and edge binding.

[0079] The process parameters used in Examples 1-3 are listed in Table 1 below:

[0080] Table 1

[0081] Example 1 20 30 Dry for 15 minutes; outlet temperature is 123℃ Dry for 30 minutes; outlet temperature is 90℃ 48HZ Example 2 25 40 Dry for 15 minutes; outlet temperature is 123℃ Dry for 30 minutes; outlet temperature is 90℃ 48HZ Example 3 30 50 Dry for 15 minutes; outlet temperature is 123℃ Dry for 30 minutes; outlet temperature is 90℃ 48 HZ

[0082] The gypsum board samples obtained in Examples 1-3 were tested according to GB / T9775-2008 for water absorption rate and surface water absorption, and the results are shown in Table 2.

[0083] Table 2

[0084] Example 1 9.2 158 Example 2 8.4 137 Example 3 7.6 118

[0085] As shown in Table 2, the water absorption rate and surface water absorption of the water-resistant paper-faced gypsum board produced using the method provided in this application both meet the requirements of GB / T9775—2008, with a water absorption rate ≤10% and a surface water absorption ≤160g / m². 2 This indicates that the performance of gypsum board has been significantly improved, meeting market demand. Furthermore, with the addition of two waterproofing materials, hydroxyl silicone oil and hydrogen-containing silicone oil, both its water absorption rate and surface water absorption rate can be steadily reduced, indicating that internal and external waterproofing can interact to further improve the waterproofing effect. Compared to using only one type of waterproofing material, this type of waterproof gypsum board can achieve the best waterproofing effect with the least amount of material used.

[0086] When roller-coating catalyzed hydroxyl silicone oil, the following steps can be followed:

[0087] Prepare the equipment: a 200kg electronic scale and a 300kg mixing vessel;

[0088] Preparation of chemicals: Mix hydroxyl silicone oil and curing agent in a ratio of 100:5 and mix in a mixing tank for 10-20 minutes;

[0089] Roller coating: The mixed hydroxyl silicone oil is delivered to the liquid-carrying area of ​​the anilox roller using a cam-type twin rotor pump. The distance between the anilox roller and the full-printing roller is adjusted to ensure that the catalytic hydroxyl silicone oil is evenly coated from bottom to top on the outer side of the lower cover paper. The flow rate of the cam-type twin rotor pump is controlled to ensure a coating amount of 30-50 g / m². 2 .

[0090] However, in the actual preparation process, because the lower protective paper is prone to tilting up and down or left and right, and the roller coating method is from bottom to top, the simple roller coating device mentioned above is difficult to conform to the shape of the lower protective paper. This leads to the presence of voids on the lower protective paper without catalytic hydroxyl silicone oil, resulting in changes in the amount of roller coating, inconsistent waterproof performance on the board, and the generation of waste boards.

[0091] The probability of the lower protective paper moving is not high. In order to make the lower protective paper follow the shape of the roller, the roller coating position of the protective paper can be limited so that it does not change during the roller coating process. However, in factory production, increasing the limit of the protective paper will also lead to an increase in the probability of paper jam, which will reduce the efficiency of the automated production line and generate other adverse factors.

[0092] In order to minimize changes to the existing assembly line production model, such as Figures 3 to 6 As shown, a device for preparing a waterproof layer on the surface of gypsum board is further provided. It is installed on a gypsum board forming machine. A support 5 is provided at the bottom of the forming machine. Specifically, the device includes a roller coating mechanism 1, a feeding mechanism 2, a pressure sensing mechanism 3, and a drive control component 4.

[0093] The roller coating mechanism 1 is mounted on the support 5. The roller coating mechanism 1 is provided with a roller coating surface for roller coating and a liquid-carrying surface for absorbing material. When the roller coating surface is attached to the lower cover paper, it can perform quantitative roller coating on the lower cover paper.

[0094] A feeding mechanism 2 is provided upstream of the roller coating mechanism 1. The feeding mechanism 2 is located on the side of the molding machine. The feeding mechanism 2 includes a mixing vessel 201. The mixing vessel 201 is installed on the side of the molding machine. A mixing chamber is provided inside the mixing vessel 201. The mixing vessel 201 draws hydroxyl silicone oil and curing agent into the mixing chamber through the fractional suction pipe 202 and mixes them thoroughly to obtain catalytic hydroxyl silicone oil. The feeding mechanism 2 is used to transport the catalytic hydroxyl silicone oil to the liquid carrier surface.

[0095] The 201 stirring vessel is a 300kg stirring vessel.

[0096] A pressure sensing mechanism 3 is provided between the roller coating mechanism 1 and the lower protective paper. The pressure sensing mechanism 3 is equipped with several pressure-sensitive plates, which are used to sense the pressure between the roller coating surface and the lower protective paper and output pressure value data.

[0097] The pressure data is received by the drive control component 4, which is mounted on the bracket 5. After receiving the pressure data, the drive control component 4 drives the roller coating mechanism 1 to move in a conformal manner with the protective paper.

[0098] Specifically, the pressure sensing mechanism 3 is communicatively connected to the drive control component 4. After receiving the pressure value data, the drive control component 4 adjusts the coating distance of the roller coating mechanism 1 on the lower protective paper by adjusting the distance between the roller coating surface and the lower protective paper, ensuring a coating amount of 30-50 g / m². 2 .

[0099] This device ensures that the coated surface and the underlying sheet conform to the shape through pressure regulation, and controls the coating amount (30-50 g / m²) by adjusting the pressure. 2 It controls the uniformity of roller coating, has no impact on the materials generated on the production line throughout the process, does not affect production efficiency, and can improve the coating efficiency and uniformity of the waterproof membrane, ensuring more uniform waterproof performance of gypsum board and reducing the generation of waste boards.

[0100] The adjustment mechanism of pressure sensing mechanism 3 is as follows:

[0101] First, the pressure-sensing surface of the pressure-sensing mechanism 3 is at the same horizontal level as the roller coating surface;

[0102] When the pressure output by the pressure sensing mechanism 3 is the preset standard pressure, the drive control component 4 remains stationary.

[0103] When the pressure value is greater than the standard pressure, the drive control component 4 drives the roller coating mechanism 1 to descend until the pressure value equals the standard pressure.

[0104] When the pressure drops below the standard pressure, the drive control component 4 drives the roller coating mechanism 1 to rise until the pressure value equals the standard pressure.

[0105] Through the aforementioned adjustment mechanism, the amount of coating can be controlled by changing the standard pressure, allowing the coating amount to be adjusted according to the waterproofing requirements of different gypsum boards. Furthermore, even if the position of the facing paper changes due to production tension, the application of the waterproof membrane can continue if production does not stop. Even if gaps are created at this time, the number of waste boards can be reduced, with a maximum of two waste boards lacking the waterproof membrane.

[0106] Furthermore, in order to solve the problem of the lower protective paper tilting left and right, the pressure sensing mechanism 3 includes a first pressure-sensing plate 301 and a second pressure-sensing plate 302 respectively disposed on the left and right sides of the roller coating mechanism 1. Both the first pressure-sensing plate 301 and the second pressure-sensing plate 302 are at the same height as the roller coating surface.

[0107] The roller coating mechanism 1 is provided with a set of drive control components 4 at both ends. The first pressure plate 301 and the second pressure plate 302 correspond to the two sets of drive control components 4 respectively and generate corresponding pressure values ​​to the corresponding drive control components 4.

[0108] When the pressure value of the first pressure plate 301 or the second pressure plate 302 changes, the drive control component 4 controls the roller coating mechanism 1 to tilt left and right, so that the roller coating surface and the lower protective paper follow the shape.

[0109] Furthermore, in order to solve the problem of the lower protective paper tilting forward and backward, the first pressure plate 301 includes an upstream plate 3011 installed upstream of the roller coating mechanism 1 and a downstream plate 3012 installed downstream of the roller coating mechanism 1. In the initial state, both the upstream plate 3011 and the downstream plate 3012 are at the same height as the roller coating surface.

[0110] When the pressure values ​​of the upstream plate 3011 and the downstream plate 3012 are the same, the output is the pressure value;

[0111] When the pressure values ​​of the upstream plate 3011 and the downstream plate 3012 are different, the output is a rotation adjustment signal. The drive control component 4 receives the rotation adjustment signal and drives the roller coating mechanism 1 to rotate until the pressure values ​​of the upstream plate 3011 and the downstream plate 3012 are the same.

[0112] In a preferred embodiment, both the first pressure-sensing plate 301 and the second pressure-sensing plate 302 are fixed to the bracket 5 via an L-shaped bracket 303, which moves along with the roller coating mechanism 1 via the bracket 5. The top of the L-shaped bracket 303 causes the first pressure-sensing plate 301 and the second pressure-sensing plate 302 to extend toward the roller coating surface.

[0113] The following section further elaborates on the usage of the above-mentioned device through the conformal preparation method of the waterproof membrane.

[0114] S100: The feeding mechanism mixes the hydroxyl silicone oil and the curing agent evenly to obtain the freshly prepared catalytic hydroxyl silicone oil. The quantitative catalytic hydroxyl silicone oil is continuously transferred to the roller coating surface of the roller coating mechanism by a quantitative pipette pump within a unit time.

[0115] S200: The roller coating surface is brought into contact with the lower protective paper on the forming machine. The roller coating amount is quantitatively controlled by laying it flat. At this time, the pressure between the roller coating surface and the lower protective paper is the standard pressure.

[0116] S300: The first pressure plate and the second pressure plate, which are at the same height as the roll coating surface, are used to sense the pressure of the lower cover paper and output pressure values ​​to the drive control component that can control the movement of the roll coating surface. If the pressure value is greater than the standard pressure, the roll coating surface is controlled to descend until the pressure value is equal to the standard pressure. If the pressure value is less than the standard pressure, the roll coating surface is controlled to rise until the pressure value is equal to the standard pressure, so that the roll coating surface and the lower cover paper are in a conformal state.

[0117] S400. If the pressure values ​​of the upstream and downstream plates on the first pressure-sensing plate are different, a rotation adjustment signal is output to the drive control component that can control the movement of the roller coating surface. The drive control component drives the roller coating mechanism to rotate until the pressure values ​​of the upstream and downstream plates are the same, and then step S300 is executed.

[0118] Both the coating surface and the liquid-carrying surface are virtual surfaces. The coating surface refers to the highest point of the coating mechanism 1 that can coat the lower cover paper. Specifically, the coating mechanism 1 includes a ceramic anilox roller 101 and a full-printing rubber roller 102 that are continuously driven by a rotation drive motor. The ceramic anilox roller 101 and the full-printing rubber roller 102 are both mounted on the bracket 5 and are in contact during rotation. The full-printing rubber roller 102 is located above the ceramic anilox roller 101.

[0119] The liquid-carrying surface is set on the ceramic anilox roller 101, and the liquid-carrying surface is connected to the feeding mechanism 2 through the pump body 103.

[0120] During rotation, the full-printing roller 102 makes uniform contact with the liquid-carrying surface. The roller coating surface is set at the top of the full-printing roller 102. The full-printing roller 102 continuously and quantitatively transfers the hydroxyl silicone oil on the ceramic anilox roller 101 to the lower protective paper.

[0121] The drive control component 4 is located at the bottom of the bracket 5.

[0122] Both the ceramic anilox roller 101 and the full-page printing roller 102 are existing structures and will not be described in detail here.

[0123] Furthermore, when adjusting the initial pressure, an adjusting handwheel 6 is provided between the ceramic anilox roller 101 and the full-printing rubber roller 102 and the support 5. The adjusting handwheel 6 can adjust the distance between the ceramic anilox roller 101 and the full-printing rubber roller 102 and the support 5 respectively.

[0124] The following is an embodiment of a drive control component 4, which includes a control component and a telescopic pump 401 mounted on the bottom of a bracket 5. A rotation drive gear 402 is provided on the bottom of the telescopic pump 401.

[0125] Among them, the second pressure-sensing plate 302, the upstream plate 3011, the downstream plate 3012, the telescopic pump 401, and the rotation drive gear 402 are all communicatively connected to the control component.

[0126] The rotation drive gears 402 located at both ends of the bracket 5 are connected together by a connecting shaft.

[0127] This invention discloses a device for preparing a waterproof layer on the surface of gypsum board, which can solve the problem that the roller cannot fully print on the lower surface of the lower protective paper due to the movement of the lower protective paper. Moreover, without modifying the existing gypsum board production line, it can realize the movement of the roller and the lower protective paper according to the shape through pressure sensing, which can improve the coating efficiency and uniformity of the waterproof membrane, ensure more uniform waterproof performance of the gypsum board, and reduce the generation of waste boards.

[0128] 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 device for preparing a waterproof layer on the surface of gypsum board, installed on a gypsum board forming machine, characterized in that, include: A support (5) is provided at the bottom of the molding machine; A roller coating mechanism (1) is provided on the bracket (5). The roller coating mechanism (1) is provided with a roller coating surface for roller coating and a liquid-carrying surface for absorbing material. When the roller coating surface is attached to the lower protective paper, the lower protective paper can be roller coated. A feeding mechanism (2) is provided on the side of the molding machine, and the feeding mechanism (2) is used to deliver catalytic hydroxyl silicone oil to the liquid carrier surface; The pressure sensing mechanism (3) is used to sense the pressure between the roller coating surface and the lower protective paper and output pressure value data. A drive control component (4) is mounted on the bracket (5) and is used to drive the roller coating mechanism (1) to move. The pressure sensing mechanism (3) is communicatively connected to the drive control component (4). After receiving the pressure value data, the drive control component (4) adjusts the roller coating distance of the roller coating mechanism (1) on the lower protective paper by adjusting the distance between the roller coating surface and the lower protective paper. The pressure sensing mechanism (3) includes a first pressure-sensing plate (301) and a second pressure-sensing plate (302) respectively disposed on the left and right sides of the roller coating mechanism (1). The first pressure-sensing plate (301) and the second pressure-sensing plate (302) are both at the same height as the roller coating surface. The first pressure-sensitive plate (301) includes an upstream plate (3011) installed upstream of the roller coating mechanism (1) and a downstream plate (3012) installed downstream of the roller coating mechanism (1). In the initial state, both the upstream plate (3011) and the downstream plate (3012) are at the same height as the roller coating surface. When the pressure values ​​of the upstream plate (3011) and the downstream plate (3012) are the same, the output is the pressure value; when the pressure values ​​of the upstream plate (3011) and the downstream plate (3012) are different, the output is a rotation adjustment signal. The drive control component (4) receives the rotation adjustment signal and drives the roller coating mechanism (1) to rotate until the pressure values ​​of the upstream plate (3011) and the downstream plate (3012) are the same.

2. The apparatus for preparing a waterproof layer on a gypsum board surface according to claim 1, characterized in that, The pressure sensing mechanism (3) is disposed on the roller coating mechanism (1), and the pressure sensing surface of the pressure sensing mechanism (3) is at the same horizontal height as the roller coating surface; When the pressure value output by the pressure sensing mechanism (3) is a preset standard pressure, the drive control component (4) remains stationary; when the pressure value is greater than the standard pressure, the drive control component (4) drives the roller coating mechanism (1) to descend until the pressure value is equal to the standard pressure; when the pressure value is less than the standard pressure, the drive control component (4) drives the roller coating mechanism (1) to rise until the pressure value is equal to the standard pressure.

3. The apparatus for preparing a waterproof layer on a gypsum board surface according to claim 2, characterized in that, A set of drive control components (4) is provided at both the left and right ends of the roller coating mechanism (1). The first pressure plate (301) and the second pressure plate (302) correspond to the two sets of drive control components (4) respectively and generate corresponding pressure values ​​to the corresponding drive control components (4). When the pressure value of the first pressure plate (301) or the second pressure plate (302) changes, the drive control component (4) controls the roller coating mechanism (1) to tilt left and right, so that the roller coating surface and the lower cover paper follow the shape.

4. The apparatus for preparing a waterproof layer on a gypsum board surface according to claim 3, characterized in that, The first pressure-sensing plate (301) and the second pressure-sensing plate (302) are both fixed on the bracket (5) by an L-shaped corner bracket (303), and the L-shaped corner bracket (303) moves with the roller coating mechanism (1) through the bracket (5); The top of the L-shaped bracket (303) drives the first pressure plate (301) and the second pressure plate (302) to extend toward the roller coating surface.

5. The apparatus for preparing a waterproof layer on a gypsum board surface according to claim 3, characterized in that, The roller coating mechanism (1) includes a ceramic anilox roller (101) and a full-page printing roller (102) that are continuously driven by a rotation drive motor. The ceramic anilox roller (101) and the full-page printing roller (102) are both mounted on the bracket (5) and are in contact during rotation. The full-page printing roller (102) is located above the ceramic anilox roller (101). The liquid-carrying surface is disposed on the ceramic anilox roller (101), and the liquid-carrying surface is connected to the feeding mechanism (2) through the pump body (103); The full-printing roller (102) is in uniform contact with the liquid-carrying surface during rotation. The roller coating surface is located at the top of the full-printing roller (102). The full-printing roller (102) continuously transfers the hydroxyl silicone oil on the ceramic anilox roller (101) to the lower protective paper in a quantitative manner. The drive control component (4) is located at the bottom of the bracket (5).

6. The apparatus for preparing a waterproof layer on a gypsum board surface according to claim 5, characterized in that, An adjusting handwheel (6) is provided between the ceramic anilox roller (101) and the full-print printing roller (102) and the bracket (5). The adjusting handwheel (6) can adjust the distance between the ceramic anilox roller (101) and the full-print printing roller (102) and the bracket (5) respectively.

7. The apparatus for preparing a waterproof layer on a gypsum board surface according to claim 4, characterized in that, The drive control component (4) includes a control component and a telescopic pump (401) installed at the bottom of the bracket (5). A rotation drive gear (402) is provided at the bottom of the telescopic pump (401). The second pressure-sensing plate (302), the upstream plate (3011), the downstream plate (3012), the telescopic pump (401), and the rotation drive gear (402) are all communicatively connected to the control component.

8. The apparatus for preparing a waterproof layer on a gypsum board surface according to claim 1, characterized in that, The feeding mechanism (2) includes a stirring vessel (201), which is installed on the side of the molding machine. The stirring vessel (201) is provided with a mixing chamber. The stirring vessel (201) draws hydroxyl silicone oil and curing agent into the mixing chamber through a component suction pipe (202) and mixes them thoroughly to obtain the catalytic hydroxyl silicone oil.

9. A preparation method, applied to the apparatus for preparing a waterproof layer on the surface of gypsum board according to any one of claims 1-8, characterized in that, Includes the following steps: S100. The hydroxyl silicone oil and curing agent are mixed evenly by the feeding mechanism to obtain the catalytic hydroxyl silicone oil for immediate use. The quantitative catalytic hydroxyl silicone oil is continuously transferred to the roller coating surface of the roller coating mechanism by the quantitative pipette pump in a unit time. S200. The roller coating surface is brought into contact with the lower protective paper on the forming machine, and the amount of roller coating is quantitatively controlled while the roller is laid flat. At this time, the pressure between the roller coating surface and the lower protective paper is the standard pressure. S300: A first pressure-sensing plate and a second pressure-sensing plate at the same height as the roller coating surface are used to sense the pressure on the lower cover paper, and output pressure values ​​to the drive control component that can control the movement of the roller coating surface. If the pressure value is greater than the standard pressure, the roller coating surface is controlled to descend until the pressure value is equal to the standard pressure. If the pressure value is less than the standard pressure, the roller coating surface is controlled to rise until the pressure value is equal to the standard pressure, so that the roller coating surface and the lower cover paper are in a conformal state. S400: If the pressure values ​​of the upstream plate and the downstream plate on the first pressure-sensitive plate are different, a rotation adjustment signal is output to the drive control component that can control the movement of the roller coating surface. The drive control component drives the roller coating mechanism to rotate until the pressure values ​​of the upstream plate and the downstream plate are the same, and step S300 is executed.

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