Painting detection device for gypsum plaster board
By designing a paper-faced gypsum board plastering inspection device, which uses pressure and scraping components to simulate the plastering process, the problem of low inspection efficiency in paper-faced gypsum board production is solved, and efficient and accurate permeability assessment is achieved.
Patent Information
- Application Number
- CN202520224917.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-13
AI Technical Summary
The existing paper-faced gypsum board production process requires a long time for painting tests, lacks specialized equipment, has low testing efficiency, and the testing process fails to simulate the actual painting operation, making it impossible to effectively assess permeability.
A paper-faced gypsum board plastering testing device was designed. The device uses an upper mold plate and a lower pressure plate to simulate the stress during the plastering process by using a pressure component and a leveling component. Combined with a multi-layer sample design, the device can detect the permeability of paper-faced gypsum board.
It improves testing efficiency, enabling efficient testing on the production line to accurately assess the permeability of paper-faced gypsum board and meet production needs.
Smart Images
Figure CN223770008U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of gypsum board manufacturing and detection, and particularly relates to a paper-faced gypsum board painting detection device. BACKGROUND
[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 increasing, especially in the past two years, home decoration gypsum board is basically paper-faced gypsum board with color, so the raw materials used in the production line are very important, because the raw materials from different manufacturers may cause chemical reactions when painting putty, wall solid and latex paint, resulting in penetration problems of the raw materials, therefore, it is very important to detect the paper-faced gypsum board with color before leaving the factory.
[0003] It is particularly important to perform painting experiments on paper-faced gypsum board of different colors after production, and only after painting detection can the penetration problems of the gypsum board after construction such as modeling, painting putty, painting wall solid and latex paint be ensured, that is, there may be a problem of color bleeding after painting different coatings on the paper-faced gypsum board.
[0004] The existing paper-faced gypsum board has a high speed during production, and the painting experiment of the gypsum board requires a long time, there is no special experimental sample forming device, the detection efficiency is low, and it is not suitable for detection on the production line of paper-faced gypsum board, and in the detection process, the putty is directly coated on the surface of the paper-faced gypsum board, and the actual situation of the paper-faced gypsum board during the painting operation is not analyzed. SUMMARY
[0005] The utility model aims at providing a paper-faced gypsum board painting detection device to solve the technical problem that in the prior art, the existing paper-faced gypsum board has a high speed during production, the painting experiment of the gypsum board requires a long time, there is no special experimental sample forming device, the detection efficiency is low, and it is not suitable for detection on the production line of paper-faced gypsum board, and in the detection process, the putty is directly coated on the surface of the paper-faced gypsum board, and the actual situation of the paper-faced gypsum board during the painting operation is not analyzed.
[0006] To solve the above technical problems, the utility model provides the following technical scheme:
[0007] A paper-faced gypsum board painting detection device, comprising an upper die plate and a lower pressing plate located directly below the upper die plate, the lower pressing plate is connected to the upper die plate through a lifting assembly, a painting groove is formed on the surface of the upper die plate, and the painting groove penetrates the upper die plate, and a fixing piece for the paper-faced gypsum board is arranged on the upper surface of the lower pressing plate.
[0008] A pressurizing assembly is provided above the upper mold plate. The pressurizing assembly includes a linear drive unit and a guide frame. A piston block that cooperates with the guide frame is provided inside the guide frame. The guide frame cooperates with the paint groove. The piston push rod end of the linear drive unit is connected to the piston block.
[0009] After the plastering groove is filled with plastering putty, the guide frame engages with the plastering groove, and the linear drive unit drives the piston block to move downward along the normal of the plane where the plastering groove is located, so that the piston block applies pressure to the plastering putty in the plastering groove.
[0010] As a preferred embodiment of this utility model, a limit stop is provided on the linear drive unit. When the linear drive unit drives the piston block to move upward along the normal of the plane where the paint groove is located, the guide frame contacts the limit stop, causing the piston block to move relative to the guide frame until the piston block reaches the inner top of the guide frame.
[0011] As a preferred embodiment of this utility model, a sealing ring is provided at the bottom edge of the guide frame, and the side wall of the piston block contacts and seals with the side wall of the guide frame.
[0012] As a preferred embodiment of this utility model, a leveling component is provided on the side wall of the guide frame;
[0013] The scraping assembly includes a guide sleeve, a guide rod installed inside the guide sleeve, a spiral groove provided inside the guide sleeve, and a spiral wing that engages with the spiral groove on the surface of the guide rod located inside the guide sleeve. When the guide rod is displaced axially along the guide sleeve, the spiral wing moves along the spiral groove, causing the guide rod to rotate circumferentially.
[0014] The guide rod has a portion of its body protruding from the guide sleeve. The end of the guide rod protruding from the guide sleeve is provided with a contact head. A scraping rod is installed on the guide rod through the contact head. A spring is fitted on the body of the guide rod between the contact head and the end of the guide sleeve.
[0015] In the initial state where the spring is not under force, the contact head and part of the guide rod protrude below the guide frame. When the linear drive unit drives the piston block to move downward along the normal of the plane where the paint groove is located, the contact head contacts the upper mold plate before the guide frame, and the contact head is subjected to force to make the guide rod move axially along the guide sleeve.
[0016] In a preferred embodiment of this utility model, the scraping rod is longer than the diagonal length of the guide frame, and the guide rod rotates circumferentially at an angle greater than 180 degrees.
[0017] In a preferred embodiment of this utility model, the paper-faced gypsum board held by the fixing member is divided into multiple layers at equal intervals.
[0018] Compared with the prior art, this utility model has the following advantages:
[0019] This invention provides a sample forming device for paper-faced gypsum board putty, and simulates the stress during the painting process by applying pressure to the putty, so that the painting effect of the paper-faced gypsum board can be directly observed after the sample is prepared. Attached Figure Description
[0020] To more clearly illustrate the embodiments of this utility model 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 in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0022] Figure 2 This is a schematic diagram of the scraping component structure according to an embodiment of the present utility model;
[0023] Figure 3 This is a simplified diagram of the motion state of the scraper rod according to an embodiment of the present utility model;
[0024] Figure 4 This is a schematic cross-sectional view of the experimental paper-faced gypsum board and the plaster putty used in this embodiment of the present invention.
[0025] The labels in the diagram represent the following:
[0026] 10-Upper molded plate; 20-Lower pressure plate; 30-Lifting assembly; 40-Painting groove; 50-Fixing component; 60-Pressure assembly; 70-Limit stop bar; 80-Scraping assembly; 90-Painting putty; 100-Paper-faced gypsum board;
[0027] 61-Linear drive unit; 62-Guide frame; 63-Piston block; 64-Sealing rubber ring;
[0028] 81-Guide sleeve; 82-Guide rod; 83-Contact head; 84-Scraper rod; 85-Spring. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] like Figures 1 to 2 As shown, this utility model provides a paper-faced gypsum board plastering testing device. Its purpose is to provide a specific sample forming device for paper-faced gypsum board plastering putty, and to simulate the stress during the plastering process by applying pressure to the plastering putty, so that the plastering effect of the paper-faced gypsum board can be directly observed after the sample preparation is completed.
[0031] This implementation method specifically includes:
[0032] The upper molded plate 10 and the lower pressure plate 20 located directly below the upper molded plate 10 are connected to the upper molded plate 10 via a lifting assembly 30. Specifically, the lifting assembly 30 is either a pneumatic cylinder or a hydraulic cylinder. The lifting assembly 30 is provided at each of the four corners of the lower pressure plate 20. The top of the piston rod of the lifting assembly 30 is connected to the bottom surface of the four corners of the upper molded plate 10, and the lower pressure plate 20 is fixedly connected to the cylinder body of the lifting assembly 30. At the same time, the piston rod passes through the lower pressure plate 20 and connects to the upper molded plate 10.
[0033] A plastering groove 40 is provided on the surface of the upper mold plate 10, and the plastering groove 40 penetrates the upper mold plate 10. A paper-faced gypsum board fixing member 50 is provided on the upper surface of the lower pressure plate 20.
[0034] A pressurizing assembly 60 is provided above the upper mold plate 10, including a linear drive unit 61 and a guide frame 62. A piston block 63 that cooperates with the guide frame 62 is provided inside the guide frame 62. The guide frame 62 cooperates with the paint groove 40. The piston push rod end of the linear drive unit 61 is connected to the piston block 63.
[0035] After the plastering putty is filled into the plastering groove 40, the guide frame 62 engages with the plastering groove 40, and the linear drive unit 61 drives the piston block 63 to move downward along the normal of the plane where the plastering groove 40 is located, so that the piston block 63 applies pressure to the plastering putty in the plastering groove 40.
[0036] A limit stop bar 70 is provided on the linear drive unit 61. When the linear drive unit 61 drives the piston block 63 to move upward along the normal of the plane where the paint groove 40 is located, the guide frame 62 contacts the limit stop bar 70, causing the piston block 63 to move relative to the guide frame 62 until the piston block 63 reaches the inner top of the guide frame 62.
[0037] In this embodiment, the testing of paper-faced gypsum board involves considering factors affecting the preparation or preparation process of the finished product. Specifically, the finished paper-faced gypsum board needs to be subjected to a certain pressure during the application of putty, which is caused by the manual application operation. However, this influence is easily overlooked during the experiment. Simply filling the putty groove 40 with putty and smoothing it out does not allow the obtained test sample to fully characterize the permeability of the paper-faced gypsum board.
[0038] Therefore, in this embodiment, a sealing ring 64 is provided at the bottom edge of the guide frame 62, and the side wall of the piston block 63 contacts and seals the side wall of the guide frame 62. This means that after the putty is filled into the plaster groove 40, the guide frame 62 moves closer to the upper mold plate (during which the guide frame 62 and the piston block 63 move synchronously) and after contact (at this time, the surfaces of the upper mold plate 10 and the lower pressure plate 20 are already in contact), the guide frame 62 seals the plaster groove 40 through the sealing ring 64.
[0039] Subsequently, the linear drive 61, specifically a pneumatic or hydraulic cylinder, continues to drive the piston chopstick 3 to move closer to the plasterboard 40. At this time, a space exists between the bottom of the piston block 63 and the putty in the plasterboard groove 40. The air in this space is used to pressurize the putty in the plasterboard groove 40, instead of the piston block 63 directly contacting the putty in the plasterboard groove 40. This simulates the effect of pressure on the penetration between the plasterboard 90 and the paper-faced gypsum board 100 during the plasterboard application process. Furthermore, after the finished product is prepared, since the paper-faced gypsum board in this embodiment is divided into multiple layers, the multiple layers can be disassembled to directly observe the penetration of each layer of gypsum board.
[0040] A leveling component 80 is provided on the side wall of the guide frame 62.
[0041] This embodiment provides a leveling component 80 including:
[0042] Guide sleeve 81, guide rod 82 is installed inside guide sleeve 81. Helical groove is provided inside guide sleeve 81. Helical fins are provided on the surface of the rod inside guide sleeve 81 due to the helical groove. When guide rod 82 is displaced along the axial direction of guide sleeve 81, the helical fins move along the helical groove, causing guide rod 82 to rotate circumferentially.
[0043] The guide rod 82 has a portion of its body protruding from the guide sleeve 81. The end of the guide rod 82 that protrudes from the guide sleeve 81 is provided with a contact head 83. A scraper rod 84 is installed on the guide rod 82 through the contact head 83. A spring 85 is fitted on the body of the guide rod 82 between the contact head 83 and the end of the guide sleeve 81.
[0044] In the initial state where the spring 85 is not under force, the contact head 83 and part of the guide rod 82 protrude below the guide frame 62. When the linear drive unit 61 drives the piston block 63 to move downward along the normal of the plane where the paint groove 40 is located, the contact head 83 contacts the upper mold plate 10 before the guide frame 62. The contact head 83 is under force, causing the guide rod 82 to move axially along the guide sleeve 81.
[0045] Of course, in this embodiment, the guide rod 82 can also be directly connected to the servo motor, and the servo motor can be controlled by an electrical signal to drive the guide rod 82 to rotate directly, so that the scraping rod 84 can scrape the plaster groove 40. In this embodiment, the contact head 83 contacts the upper surface of the lower pressure plate 20 to generate the electrical signal.
[0046] Since the axial displacement and circumferential rotation coupling action between the guide rod 82 and the guide sleeve 81 are carried out following the linear action of the guide frame 62, the action is consistent.
[0047] like Figure 3 As shown, in this embodiment, in order for one scraper rod 84 to scrape the putty in the entire plastering groove, the length of the scraper rod 84 needs to be at least greater than the diagonal length of the guide frame 62. The rotation center of the scraper rod 84 is located at the corner of the guide frame 62. At this time, the length of the scraper rod is the smallest, and the circumferential rotation of the guide rod 82 under the action of the guide sleeve 81 is the smallest. At this time, the rotation angle is slightly greater than 90° (the width of the scraper rod 84 and the thickness of the guide frame 62 need to be considered).
[0048] If set in other positions of the guide frame 62, the guide rod 82 needs to rotate circumferentially by an angle greater than 90° and less than 180°. When the rotation angle of the guide rod 82 is greater than 180°, its leveling area will be able to cover the plaster groove 40. The leveling rod 84 is parallel to the side of the guide frame 62 in its initial position.
[0049] like Figure 3 As shown, the rotating position of the scraper bar 84 is located at Within the specified angle range, the bottom of the contact head 83 has already contacted the upper surface of the upper mold plate 10, but the guide frame 62 and the paint groove 40 are not yet in contact. This occurs after the scraping rod 84 has completed its work. After the angle range is rotated, and the scraper rod 84 has completely detached from directly below the guide frame 62, the guide frame 62 begins to contact the upper surface of the upper mold plate 10, that is, to cooperate with the paint groove 40 and seal the paint groove 40.
[0050] like Figure 4As shown, in the specific experimental process, taking the penetration of putty on paper-faced gypsum board as an example, since most gypsum boards are made of a single piece, the penetration of paper-faced gypsum board can only be measured from the other surface of the gypsum board opposite the putty layer (that is, the side without putty). If the paper-faced gypsum board has strong impermeability, then professional equipment is needed to test the painting effect and quality of the paper-faced gypsum board. It is not possible to obtain the penetration of paper-faced gypsum board by visual inspection after the putty has been formed.
[0051] Therefore, in this embodiment, the paper-faced gypsum board held by the fixing member 50 is divided into multiple layers at equal intervals. That is, by cutting a whole piece of gypsum board evenly in terms of thickness, a piece of paper-faced gypsum board is divided into multiple layers.
[0052] During the experiment, the multi-layered paper-faced gypsum board to be divided is stacked and fixed by fastener 50. The fastener 50 is a slot made on the surface of the lower pressure plate 20. The size of the slot is the same as the width of the experimental paper-faced gypsum board, but larger than the width of the experimental paper-faced gypsum board. The two ends of the slot extend to the side of the lower pressure plate 20 to form open ports, so that the paper-faced gypsum board can enter from the open port side during continuous testing. At the same time, the height of the slot is slightly less than the overall thickness of the paper-faced gypsum board, which makes it easy to fix the multi-layered paper-faced gypsum board.
[0053] 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 paper gypsum board painting detection device, characterized in that, comprising an upper die plate (10) and a lower pressing plate (20) located directly below the upper die plate (10), the lower pressing plate (20) is connected to the upper die plate (10) through a lifting assembly (30), a painting groove (40) is opened on the surface of the upper die plate (10), and the painting groove (40) penetrates the upper die plate (10), and a fixing piece (50) for paper gypsum board is arranged on the upper surface of the lower pressing plate (20); a pressing assembly (60) is arranged above the upper die plate (10), the pressing assembly (60) comprises a linear drive part (61) and a guide frame (62), the inside of the guide frame (62) is provided with a piston block (63) matched with the guide frame (62), the guide frame (62) is matched with the painting groove (40), and the piston push rod end of the linear drive part (61) is connected with the piston block (63); wherein, after filling the painting putty in the painting groove (40), the guide frame (62) is matched and contacted with the painting groove (40), the linear drive part (61) drives the piston block (63) to move downward along the normal line of the plane where the painting groove (40) is located, so that the piston block (63) applies pressure to the painting putty in the painting groove (40).
2. The paper gypsum board painting detection device according to claim 1, characterized in that, a limiting stopper (70) is arranged on the linear drive part (61), when the linear drive part (61) drives the piston block (63) to move upward along the normal line of the plane where the painting groove (40) is located, the guide frame (62) is contacted with the limiting stopper (70), so that the piston block (63) moves relative to the guide frame (62), until the piston block (63) reaches the inner top of the guide frame (62).
3. A device for detecting the presence of a coating on a paper-faced gypsum board according to claim 1, wherein The bottom edge of the guide frame (62) is provided with a sealing rubber ring (64), and the sidewall of the piston block (63) is in contact and sealed with the sidewall of the guide frame (62).
4. The paper gypsum board painting detection device according to claim 1, characterized in that, a scraping assembly (80) is arranged on the sidewall of the guide frame (62); the scraping assembly (80) comprises a guide sleeve (81), a guide rod (82) is installed in the guide sleeve (81), a spiral groove is arranged in the guide sleeve (81), and a spiral fin matched with the spiral groove is arranged on the rod body surface of the guide rod (82) in the guide sleeve (81), when the guide rod (82) is displaced in the axial direction of the guide sleeve (81), the spiral fin moves in the spiral groove, so that the guide rod (82) rotates circumferentially. The guide rod (82) has a part of the rod body protruding from the guide sleeve (81), and the end of the guide rod (82) protruding from the guide sleeve (81) is provided with a contact head (83), the guide rod (82) is installed with a scraping rod (84) through the contact head (83), and the guide rod (82) is sleeved with a spring (85) between the contact head (83) and the end of the guide sleeve (81); Wherein, in the initial state of the spring (85) without force, the contact head (83) and part of the rod body of the guide rod (82) protrude below the guide frame (62), when the linear drive part (61) drives the piston block (63) to move downward along the normal line of the plane where the paint slot (40) is located, the contact head (83) contacts the upper mold plate (10) before the guide frame (62), and the contact head (83) is forced to move the guide rod (82) axially along the guide sleeve (81).
5. The paper gypsum board painting detection device according to claim 4, wherein the length of the diagonal of the guide frame (62) is smaller than the length of the scraping rod (84).
6. The paper gypsum board painting detection device according to claim 1, wherein the paper gypsum board clamped by the fixing member (50) is divided into multiple layers at equal intervals.