Decoloration detection device and detection method for colored covering paper of gypsum board

Abstract

The decoloration detection device comprises a station mechanism, a rotary driving device and a heating device, the station mechanism is provided with a plurality of clamping units and a detection element mechanism, the detection element mechanism comprises a plurality of linear driving parts and a forming groove body, and the forming groove body is matched with the clamping units to seal the colored surface protection paper in a contact opening area. A through hole is formed in the top of the forming groove body. The detection method comprises the following steps: dividing surface protection paper of each color into experiment paper and contrast paper, respectively clamping the experiment paper and the contrast paper through a clamping unit, and forming a sealed cavity between a forming groove body and the colored surface protection paper; filling the sealing cavity of the experiment paper with gypsum board slurry, and filling the sealing cavity of the contrast paper with water; driving the device to rotate centrifugally through the rotary driving device, heating the sealing cavity of the experimental paper by the heating device, and opening the sealing cavity of the experimental paper; and after the gypsum board is formed, releasing water in the sealed cavity of the contrast paper to obtain the water absorption rate and the decoloration condition of the colored surface protection paper.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum board production, and particularly relates to a decolorization detection device and method for colored facing paper of gypsum board. Background Art

[0002] With the development of the gypsum board industry, the market demand for paper-faced gypsum board is also increasing, and the demand for colored gypsum board is also continuously increasing. Especially in the past two years, the home decoration gypsum board is basically colored paper-faced gypsum board. The performance detection of the facing paper is an important link to ensure the product quality. The performance of the facing paper directly affects the durability, strength and appearance quality of the paper-faced gypsum board.

[0003] The existing performance detection of the facing paper products includes not only the detection of the appearance surface but also the basic physical and chemical property detection, such as the tensile strength, tear strength, water resistance and acid and alkali resistance of the facing paper. In the existing production process of gypsum board, if it is necessary to detect the performance of the facing paper of the gypsum board, most of them are carried out in multiple items, and independent experiments are carried out for each item. The experimental period is long, and many experimental items need to be established, and the detection efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a decolorization detection device and method for colored facing paper of gypsum board, so as to solve the technical problems in the prior art that the detection efficiency of the facing paper is low and the steps are complex due to the lack of effective batch detection of the existing colored facing paper of gypsum board.

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

[0006] A decolorization detection device and method for colored facing paper of gypsum board, comprising:

[0007] A station mechanism, the station mechanism has a plurality of clamping units, the plurality of clamping units are arranged in a circular array, and the clamping units are used to clamp the colored facing paper;

[0008] A detection element mechanism, including a plurality of linear driving parts, and the plurality of linear driving parts correspond to the plurality of clamping units one by one. A forming groove body is arranged at the end of the linear driving part. The forming groove body is open towards the surface of the clamping unit to form a contact opening, and cooperates with the clamping unit to seal the colored facing paper in the contact opening area. A through hole is arranged at the top of the forming groove body, and the through hole includes a detection probe mounting hole and a filling port;

[0009] A rotary driving device, the plurality of linear driving parts are arranged in a circular array on the rotary driving device, and the rotary driving device is used to drive the whole connected by the station mechanism and the detection element mechanism to rotate centrifugally;

[0010] A heating device is provided on the forming tank body to heat the forming tank body.

[0011] As a preferred embodiment of the present invention, a plurality of the clamping units are uniformly arranged on an annular guide rail, and the clamping units can move along the annular guide rail;

[0012] The clamping unit includes a square frame. A fitting frame is arranged inside the square frame. An inclined surface is arranged inside the fitting frame. A rubber layer is arranged on the surface of the inclined surface. The outer surface of the forming tank body is matched with the outer surface of the rubber layer;

[0013] Among them, the four corners of the fitting frame are detachably connected.

[0014] As a preferred embodiment of the present invention, the action end of the linear drive part is rotationally connected to the forming tank body;

[0015] A torsion drive mechanism is arranged on the forming tank body. The torsion drive mechanism is connected to the linear drive part through a bracket;

[0016] The torsion drive mechanism is used to apply a torsion to the forming tank body to rotate around the connection point with the action end of the linear drive part.

[0017] As a preferred embodiment of the present invention, the annular guide rail includes an upper ring body, a lower ring body and a plurality of station frames. The square frame is fitted and installed inside the station frame. The top of the station frame is movably connected to the upper ring body. The bottom of the station frame is movably connected to the lower ring body;

[0018] The middle of the top and bottom of the square frame are connected to the station frame through a rotating shaft;

[0019] A locking mechanism is arranged on the side of the square frame.

[0020] As a preferred embodiment of the present invention, a multi-point pressing mechanism is arranged outside the station frame; a paper clamping assembly is arranged on the forming tank body. The paper clamping assembly is used to clamp a test paper and make the test paper parallel to the colored protective paper clamped by the clamping unit;

[0021] Among them, the multi-point pressing mechanism is used to perform multi-point pressing on the colored protective paper clamped by the clamping unit, so that the colored protective paper has a protrusion in contact with the test paper clamped by the paper clamping assembly.

[0022] As a preferred embodiment of the present invention, the multi-point pressing mechanism includes a fixing plate connected to the working station frame, and the fixing plate is parallel to the working station frame. A plurality of action rods are evenly distributed on the fixing plate, and a contact head is provided at the end of the action rod facing the working station frame; wherein, the plurality of action rods are used to synchronously drive the contact head to contact the colored facing paper clamped by the clamping unit, so as to form protrusions on the surface of the colored facing paper.

[0023] The paper clamping assembly includes strip-shaped grooves formed on the top surface and the bottom surface of the forming groove body. A sliding member is provided on the side surface of the strip-shaped groove, and the sliding member is used to slide towards the strip-shaped groove.

[0024] As a preferred embodiment of the present invention, it further includes a water circulation assembly. The water circulation assembly includes a pump body and a water tank. The water outlet end of the pump body is connected to the through hole through a pipeline. The bottom of the forming groove body is connected to the water tank through a pipeline, and the water tank is connected to the water inlet end of the pump body through a pipeline.

[0025] As a preferred embodiment of the present invention, an isolation cavity is provided at the bottom of the forming groove body. The isolation cavity is connected to the internal cavity of the forming groove body through a hole channel, and the bottom of the isolation cavity is connected to the water tank through a pipeline.

[0026] As a preferred embodiment of the present invention, the fitting frame includes a circular member, and a square slot is provided inside the circular member. The inner wall of the square slot is fitted with the outer wall of the forming groove body.

[0027] And the square frame is fitted with the circular member.

[0028] The present invention provides a method for detecting the decolorization of colored facing paper, including the following specific steps:

[0029] S10. Prepare colored facing papers of multiple colors. Each color of facing paper is divided into an experimental paper and a control paper. The experimental paper and the control paper are clamped by the clamping unit, and the forming groove body is used to cover the surfaces of the experimental paper and the control paper, so that a sealed cavity is formed between the forming groove body and the colored facing paper.

[0030] S20. Inject gypsum board slurry into the sealed cavity of the experimental paper through the through hole, and inject water into the sealed cavity of the control paper.

[0031] S30. Drive the clamping unit and the forming groove body to rotate centrifugally as a whole during the process of gypsum board forming through the rotation driving device, heat the sealed cavity of the experimental paper through the heating device, and open the sealed cavity of the experimental paper.

[0032] S40, after the gypsum board is formed, the water in the sealed cavity of the control paper is released to obtain the water absorption rates of the experimental paper and the control paper, and the decolorization of the colored face paper is obtained through the water in the sealed cavity of the control paper.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention divides batches of colored face papers of different colors into experimental papers and control papers for discoloration detection, and utilizes a process of simulating gypsum board molding and combining with the colored face papers to simulate the actual production of colored face papers as much as possible, thereby being able to realize the discoloration detection of the colored face papers when immersed in pure water and the discoloration after being combined with the gypsum board. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0036] Figure 1 It is a schematic diagram of the overall structure of the station mechanism of the experimental paper of the colored face paper according to the embodiment of the present invention;

[0037] Figure 2 It is a schematic diagram of the overall structure of the station mechanism of the control paper of the colored face paper according to the embodiment of the present invention;

[0038] Figure 3 It is a schematic diagram of the overall structure of a multi-point pressure mechanism provided on a workstation frame according to an embodiment of the present invention;

[0039] Figure 4 It is a schematic side view of the structure of a forming tank body in which a torsion driving mechanism is provided in the forming tank body according to an embodiment of the present invention;

[0040] Figure 5 A schematic structural diagram of an implementation of a coordination frame according to an embodiment of the present invention;

[0041] Figure 6 It is a structural schematic diagram of the cross-section of the forming tank body according to an embodiment of the present invention.

[0042] The numbers in the figure represent the following:

[0043] 10-station mechanism; 20-detection element mechanism; 40-heating device; 60-torque driving mechanism; 61-bracket; 62-fixing ring; 63-driving cylinder; 70-multi-point pressure mechanism; 80-paper clamping assembly; 90-water circulation assembly;

[0044] 11 - clamping unit; 12 - square frame; 13 - fitting frame; 131 - circular part; 132 - square slot; 14 - inclined surface;

[0045] 21 - linear drive part; 22 - forming groove body; 23 - contact opening; 24 - through hole; 25 - isolation cavity;

[0046] 53 - station frame; 54 - rotating shaft; 55 - locking mechanism;

[0047] 71 - fixing plate; 72 - operating rod; 73 - contact head;

[0048] 81 - strip slot; 82 - sliding part;

[0049] 91 - pump body; 92 - water tank. Specific embodiments

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] As Figures 1 to 6 shown, this embodiment provides a decolorization detection device for colored facing paper of gypsum board, and its purpose is to pass the colored facing paper, including:

[0052] A station mechanism 10, the station mechanism 10 has a plurality of clamping units 11, the plurality of clamping units 11 are arranged in a circular array, and the clamping unit 11 is used to clamp the colored facing paper.

[0053] A detection element mechanism 20, including a plurality of linear drive parts 21, and the plurality of linear drive parts 21 correspond to the plurality of clamping units 11 one by one. A forming groove body 22 is provided at the end of the linear drive part 21. The surface of the forming groove body 22 facing the clamping unit 11 is open to form a contact opening 23, and cooperates with the clamping unit 11 to seal the colored facing paper in the area of the contact opening 23. A through hole 24 is provided at the top of the forming groove body 22, and the through hole 24 includes a detection probe mounting hole and a filling port.

[0054] A rotary drive device, on which a plurality of linear drive parts 21 are arranged in an annular array. The rotary drive device is used to drive the whole connected by the station mechanism 10 and the detection element mechanism 20 to rotate centrifugally. Specifically, the rotary drive device is a disc body, and the rotating shaft of the motor is connected to the center position of the disc body, so as to be able to drive the disc body to rotate. The whole connected by a plurality of station mechanisms 10 and the detection element mechanism 20 is evenly distributed on the disc body along the radial direction of the disc body.

[0055] A heating device 40 is arranged on the forming tank body 22 to heat the forming tank body 22, and is used to heat the gypsum board slurry to form.

[0056] In this embodiment, batches of colored facing papers of different colors are divided into experimental papers and control papers for decolorization detection. During the experiment, the experimental papers and the control papers are respectively clamped by the clamping unit 11. Subsequently, the detection element mechanism 20 cooperates with the clamping unit 11 to contact the colored facing paper, and the surface of the forming tank body 22 cooperates with the surface of the colored facing paper to form a sealed cavity in the forming tank body 22, that is, the contact opening 23 contacts the surface of the facing paper. Water is injected into the sealed cavity of the control paper through the through hole 24. The clamping unit of the control paper is as Figure 1 shown, and gypsum board slurry is injected into the sealed cavity of the experimental paper, as Figure 2 shown, and then the through hole is sealed.

[0057] Subsequently, the rotary drive device drives the rotation, and heats the forming tank body 22 of the experimental paper to promote the formation of the gypsum board. During this process, the through hole on the forming tank body 22 of the experimental paper is opened.

[0058] After the gypsum board is formed, the water in the sealed cavity of the control paper is released to obtain the water absorption rates of the experimental paper and the control paper, and the decolorization situation of the colored facing paper is obtained through the water in the sealed cavity of the control paper.

[0059] This embodiment uses the process of simulating the combination of gypsum board forming and colored facing paper to simulate the actual production of colored facing paper as much as possible, so as to be able to realize the decolorization detection of the colored facing paper by pure water immersion and the decolorization situation after combination with the gypsum board.

[0060] In this embodiment, a plurality of clamping units 11 are evenly arranged on an annular guide rail, and the clamping unit 11 can move along the annular guide rail, that is, under the drive of the rotary drive device, a plurality of clamping units 11 rotate in a circle on the annular guide rail.

[0061] This embodiment provides a specific implementation of the clamping unit 11, which includes a square frame 12. A mating frame 13 is provided inside the square frame 12. An inclined surface 14 is provided inside the mating frame 13. A rubber layer is provided on the surface of the inclined surface 14. The outer surface of the forming groove body 22 is matched with the outer surface of the rubber layer.

[0062] Among them, the four corners of the mating frame 13 can be detachably connected or connected by elastic members, such as elastic bands.

[0063] The linear driving part 21 is specifically a pneumatic cylinder, a hydraulic cylinder or a lead screw-nut pair transmission assembly, and its moving end is rotatably connected to the forming groove body 22.

[0064] A torsion driving mechanism 60 is provided on the forming groove body 22. The torsion driving mechanism 60 is connected to the linear driving part 21 through a bracket 61.

[0065] The torsion driving mechanism 60 is used to apply a torsion to the forming groove body 22 to rotate around the connection point of the moving end of the linear driving part 21.

[0066] The annular guide rail includes an upper ring body, a lower ring body and a plurality of station frames 53. The square frame 12 is fitted and installed inside the station frame 53. The top of the station frame 53 is movably connected to the upper ring body, and the bottom of the station frame 53 is movably connected to the lower ring body.

[0067] The middle of the top and bottom of the square frame 12 are both connected to the station frame 53 through a rotating shaft 54.

[0068] A locking mechanism 55 is provided on the side of the square frame 12.

[0069] A multi-point pressing mechanism 70 is provided outside the station frame 53. A paper clamping assembly 80 is provided on the forming groove body 22. The paper clamping assembly 80 is used to clamp the test paper and make the test paper parallel to the colored protective paper clamped by the clamping unit 11.

[0070] Among them, the multi-point pressing mechanism 70 is used to perform multi-point pressing on the colored protective paper clamped by the clamping unit 11, so that the colored protective paper has a protrusion in contact with the test paper clamped by the paper clamping assembly 80.

[0071] The multi-point pressing mechanism 70 includes a fixing plate 71 connected to the station frame 53, and the fixing plate 71 is parallel to the station frame 53. A plurality of moving rods 72 are evenly distributed on the fixing plate 71. Specifically, they are pneumatic cylinders or hydraulic cylinders and can trigger the moving rods 72 and the contact heads 73 to contact the colored protective paper, and the time of contacting the colored protective paper is short enough. And a contact head 73 is provided at the end of the moving rod 72 facing the station frame 53.

[0072] Among them, multiple action rods 72 are used to synchronously drive the contact head 73 to contact the colored facing paper clamped by the clamping unit 11, so as to form protrusions on the surface of the colored facing paper.

[0073] Specifically, the purpose is to provide a method for detecting the dehydration rate of colored facing paper, that is, after the colored facing paper is soaked in water, the water in the sealed cavity formed by the forming tank body and the colored facing paper flows out of the sealed cavity without generating negative pressure, or when the generated negative pressure does not cause the moisture in the colored facing paper to seep out, the water in the sealed cavity is made to flow out as much as possible.

[0074] Subsequently, a standard test paper, which is thin enough and has a known water absorption rate, is placed close to the colored facing paper and kept parallel and surface-tight with the colored facing paper. Subsequently, a plurality of pressure application points, that is, the protrusions mentioned above, are set in a set area on the colored facing paper. The specific parameters of the protrusions include the effective contact area of the pressure points.

[0075] By triggering the pressure application mechanism to work, the protrusions are made to contact the standard test paper instantaneously. In this way, through the water absorption rate of the standard test paper and the water seepage area on the standard test paper, the water absorption rate at the position of the protrusion is calculated by conversion.

[0076] Furthermore, the water absorption rate of the entire colored facing paper is calculated by integration in the width direction of the colored facing paper.

[0077] Of course, in this embodiment, a paper clamping assembly 80 can also be provided on the forming tank body 22 to clamp the standard test paper. Specifically, it includes strip-shaped grooves 81 opened on the top surface and the bottom surface of the forming tank body 22, and sliding members 82 are arranged on the side surface of the strip-shaped grooves 81. The sliding members 82 are used to slide towards the strip-shaped grooves 81.

[0078] During specific operation, the test paper is inserted from the strip-shaped groove 81, and the sliding members 82 arranged on the top and bottom of the forming tank body 22 slide towards the strip-shaped groove 81 to clamp the test paper.

[0079] Specifically, when the forming tank body 22 enters the fitting frame 13 during the test, the sliding members 82 move towards the strip-shaped groove 81 due to the frictional force with the inner wall of the fitting frame 13, thereby sealing the strip-shaped groove 81. When the forming tank body 22 disengages from the fitting frame 13, the sliding members 82 can be separated from the strip-shaped groove 81 due to the frictional force.

[0080] Specifically, the sliding member 82 is a rectangular thin plate structure, and an installation groove for installing the sliding member 82 is provided on the surface of the forming tank body 22. Among them, the strip-shaped groove 81 is located on the bottom wall surface of one length side of the installation groove, and the strip-shaped groove 81 penetrates and communicates with the sealed cavity.

[0081] This embodiment further includes a water circulation assembly 90, which includes a pump body 91 and a water tank 92. The water outlet end of the pump body 91 is connected to the through hole 24 through a pipeline, the bottom of the forming groove body 22 is connected to the water tank 92 through a pipeline, and the water tank 92 is connected to the water inlet end of the pump body 91 through a pipeline, that is, it is used to inject water into the sealed cavity of the control paper during the detection process.

[0082] Of course, after the experiment is over, if negative pressure is generated in the sealed cavity, it is easy for the water that has penetrated the colored facing paper.

[0083] If an isolation cavity 25 is provided at the bottom of the forming groove body 22, the isolation cavity 25 is connected to the inner cavity of the forming groove body 22 through a hole, and the bottom of the isolation cavity 25 is connected to the water tank 92 through a pipeline. Specifically, the pipeline uses a deformable hose.

[0084] The purpose of setting the isolation cavity 25 is that when the water in the sealed cavity is emptied, it is carried out through the isolation cavity 25, and the water in the sealed cavity will not be directly discharged by the pump body. This can avoid the negative pressure generated in the sealed cavity due to the pumping action of the pump body. That is, the isolation cavity 25 acts as a buffer and can empty the water in the sealed cavity as much as possible.

[0085] Furthermore, in this embodiment, it is desired to set a torsion drive mechanism 60 on the station mechanism 10 of the experimental paper and the detection element mechanism 20. The function of the torsion drive mechanism 60 is to test the adhesion strength between the colored facing paper and the gypsum board, and to peel the gypsum board and the colored facing paper to detect the decolorization situation after the combination of the gypsum board and the colored facing paper, that is, the color penetration of the colored facing paper on the surface of the gypsum board.

[0086] At this time, the clamping unit 11 fixedly clamps the experimental paper, and the torsion drive mechanism 60 drives the rotation of the forming groove body 22 to apply a rotational torque to the gypsum board in the forming groove body 22. As the torque increases, the peeling action occurs between the gypsum board and the experimental paper.

[0087] For this reason, the mating frame 13 in this embodiment is specifically a circular part 131, and a square slot 132 is provided in the circular part 131, similar to the structure of a copper coin. The inner wall of the square slot 132 cooperates with the outer wall of the forming groove body 22.

[0088] Of course, in order not to affect the fixed clamping of the experimental paper, a ring frame can be sleeved between the circular part 131 and the square frame 12, and the experimental paper is clamped between the ring frame and the square frame 12.

[0089] Moreover, the square frame 12 cooperates with the circular part 131, and its purpose is to enable the torsion drive mechanism 60 to drive the rotation of the forming groove body 22.

[0090] In this embodiment, the torque drive mechanism 60 may specifically include a fixed ring 62 installed on the surface of the forming tank 22. The center of the fixed ring 62 coincides with the center of the surface of the forming tank 22. The fixed end of the drive cylinder 63 is rotatably connected to the bracket 61. The drive cylinder 63 is specifically a pneumatic cylinder or a hydraulic cylinder.

[0091] The purpose of the torque drive mechanism 60 here is to drive the forming tank 22 to rotate. At this time, the gypsum board in the forming tank 22 has adhered to the colored facing paper. Then, the torque drive mechanism 60 can be used to peel off the gypsum board and the colored facing paper.

[0092] This embodiment provides a method for detecting the decolorization of the colored facing paper of the gypsum board decolorization detection device, including the following specific steps:

[0093] S10. Prepare colored facing papers of multiple colors. Each color of facing paper is divided into an experimental paper and a control paper. Clamp the experimental paper and the control paper through the clamping unit, and cover the surfaces of the experimental paper and the control paper with the forming tank, so that a sealed cavity is formed between the forming tank and the colored facing paper;

[0094] S20. Inject gypsum board slurry into the sealed cavity of the experimental paper through the through hole, and inject water into the sealed cavity of the control paper;

[0095] S30. Drive the clamping unit and the forming tank to rotate centrifugally as a whole during the process of gypsum board forming through the rotation drive device, heat the sealed cavity of the experimental paper with the heating device, and open the sealed cavity of the experimental paper;

[0096] S40. After the gypsum board is formed, release the water in the sealed cavity of the control paper, obtain the water absorption rates of the experimental paper and the control paper, and obtain the decolorization situation of the colored facing paper through the water in the sealed cavity of the control paper.

[0097] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A device for detecting discoloration of colored facing paper of gypsum board, characterized in that: include: A workstation mechanism (10), the workstation mechanism (10) having a plurality of clamping units (11), the plurality of clamping units (11) being arranged in a ring array, the clamping units (11) being used for clamping colored face paper; The detection element mechanism (20) comprises a plurality of linear drive parts (21), and the plurality of linear drive parts (21) correspond one to one with the plurality of clamping units (11); a molded groove body (22) is provided at the end of the linear drive part (21); the molded groove body (22) is open toward the surface of the clamping unit (11) to form a contact opening (23), and a colored protective paper is used to seal the contact opening (23) area in cooperation with the clamping unit (11); a through hole (24) is provided at the top of the molded groove body (22); the through hole (24) comprises a detection probe mounting hole and a filling port; A rotation drive device, wherein a plurality of the linear drive parts (21) are arranged in a ring array on the rotation drive device, and the rotation drive device is used to drive the entirety connected to the station mechanism (10) and the detection element mechanism (20) to perform centrifugal rotation; A heating device (40) is arranged on the forming tank body (22) to heat the forming tank body (22).

2. A gypsum board colored face paper decolorization detection device according to claim 1, characterized in that: A plurality of the clamping units (11) are evenly arranged on an annular guide rail (50), and the clamping units (11) are capable of moving along the annular guide rail (50); The clamping unit (11) comprises a square frame (12), a matching frame (13) is arranged on the inner side of the square frame (12), an inclined surface (14) is arranged on the inner side of the matching frame (13), a rubber ring layer is arranged on the surface of the inclined surface (14), and the outer surface of the molding groove body (22) matches the outer surface of the rubber ring layer; The four corners of the matching frame (13) can be detachably connected.

3. A gypsum board colored face paper decolorization detection device according to claim 1, characterized in that: The action end of the linear drive part (21) is rotatably connected to the forming tank body (22); A torsion drive mechanism (60) is provided on the forming tank body (22), and the torsion drive mechanism (60) is connected to the linear drive part (21) via a bracket (61); The torque driving mechanism (60) is used to apply a torque to the forming trough body (22) so as to rotate around the connection point with the action end of the linear driving part (21).

4. A gypsum board colored face paper decolorization detection device according to claim 1, characterized in that: The annular guide rail (50) comprises an upper ring body (51), a lower ring body (52) and a plurality of workstation frames (53), the square frame (12) being mounted in the workstation frame (53), the top of the workstation frame (53) being movably connected to the upper ring body (51), and the bottom of the workstation frame (53) being movably connected to the lower ring body (52); The middle of the top and bottom of the square frame (12) are connected to the workstation frame (53) via a rotating shaft (54); A locking mechanism (55) is arranged on the side of the square frame (12).

5. The device for detecting discoloration of colored facing paper of gypsum board according to claim 1, characterized in that: A multi-point pressure mechanism (70) is arranged on the outside of the workstation frame (53); a paper clamping assembly (80) is arranged on the forming tank body (22), and the paper clamping assembly (80) is used to clamp the test paper and make the test paper parallel to the colored face paper clamped by the clamping unit (11); The multi-point pressure mechanism (70) is used to apply multi-point pressure to the colored face paper clamped by the clamping unit (11), so that the colored face paper has protrusions that contact the test paper clamped by the paper clamping assembly (80).

6. A gypsum board colored face paper decolorization detection device according to claim 1, characterized in that: The multi-point pressure mechanism (70) comprises a fixed plate (71) connected to the work station frame (53), and the fixed plate (71) is parallel to the work station frame (53), a plurality of action rods (72) are evenly distributed on the fixed plate (71), and a contact head (73) is provided at the end of the action rod (72) facing the work station frame (53); wherein the plurality of action rods (72) are used to synchronously drive the contact head (73) to contact the colored face paper clamped by the clamping unit (11), so that a bulge is formed on the surface of the colored face paper; The paper clamping assembly (80) comprises strip grooves (81) opened on the top surface and the bottom surface of the forming groove body (22), and a sliding member (82) is arranged on the side surface of the strip groove (81), and the sliding member (82) is used to slide towards the strip groove (81).

7. A gypsum board colored face paper decolorization detection device according to claim 1, characterized in that: It also includes a water circulation component (90), the water circulation component (90) including a pump body (91) and a water tank (92), the water outlet end of the pump body (91) is connected to the through hole (24) via a pipeline, the bottom of the molded tank (22) is connected to the water tank (92) via a pipeline, and the water tank (92) is connected to the water inlet end of the pump body (91) via a pipeline.

8. The device for detecting discoloration of colored facing paper of gypsum board according to claim 1, characterized in that: An isolation cavity (25) is provided at the bottom of the molded tank body (22); the isolation cavity (25) is connected to the internal cavity of the molded tank body (22) via a channel; and the bottom of the isolation cavity (25) is connected to the water tank (92) via a pipeline.

9. A gypsum board colored face paper decolorization detection device according to claim 1, characterized in that: The matching frame (13) comprises a circular piece (131), a square slot (132) is arranged inside the circular piece (131), and the inner wall of the square slot (132) matches the outer wall of the forming slot body (22); Furthermore, the square frame (12) cooperates with the circular component (131).

10. A method for detecting discoloration of colored facing paper of the gypsum board according to claim 1, characterized in that: Including specific steps: S10, preparing colored face paper of various colors, each color of face paper is divided into experimental paper and control paper, the experimental paper and the control paper are clamped by a clamping unit, and the surfaces of the experimental paper and the control paper are covered by a forming groove body, so that the forming groove body and the colored face paper are combined into a sealed cavity; S20, filling the sealed cavity of the experimental paper with gypsum board slurry through the through hole, and filling the sealed cavity of the control paper with water; S30, driving the clamping unit and the molding tank body in the process of gypsum board molding to rotate centrifugally as a whole through the rotary drive device, and the heating device heats the sealed cavity of the experimental paper, and opens the sealed cavity of the experimental paper; S40, after the gypsum board is formed, the water in the sealed cavity of the control paper is released to obtain the water absorption rates of the experimental paper and the control paper, and the decolorization of the colored face paper is obtained through the water in the sealed cavity of the control paper.

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