Preparation process of green laminated board

Abstract

This invention discloses a manufacturing process for a green composite slab, comprising the following steps: cleaning the mold surface, marking and positioning the forming mold, arranging reinforcing bars inside the forming mold, applying opposing forces to the two ends of the reinforcing bars extending out of the forming mold for positioning, pouring concrete into the forming mold for molding, and post-treatment curing. Before concrete pouring, the pressure blocks are driven upward to press against the two ends of the reinforcing bars, further achieving horizontal positioning of the reinforcing bars and reducing the phenomenon of horizontal displacement of the reinforcing bars during subsequent pouring, ultimately improving the quality of the composite slab.

Description

Technical Field

[0001] This invention relates to the field of laminated boards, and in particular to a process for preparing a green laminated board. Background Technology

[0002] Composite slabs, also known as composite floor slabs, are assembled monolithic floor slabs made by stacking precast slabs and cast-in-place reinforced concrete layers. Composite floor slabs have good integrity, and the upper and lower surfaces of the slab are flat, which facilitates the finishing layer decoration. They are suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity.

[0003] Currently, the production process of composite slabs mainly involves pouring concrete into a mold formed by assembling a molding template. Before pouring, steel bars need to be arranged in the pouring area inside the molding mold. The ends of the steel bars protrude from the molding mold. After the concrete is poured, the steel bars and concrete are combined into one to form the composite slab.

[0004] However, in actual production, when pouring concrete into the molding mold, the impact force generated during the pouring process can cause the horizontal part of the reinforcing bars to shift, which in turn leads to differences in the degree of protrusion of the reinforcing bars on the side wall of the composite slab, ultimately affecting the quality of the composite slab. This issue needs further improvement. Summary of the Invention

[0005] To further reduce horizontal displacement of reinforcing bars and improve the quality of composite slabs, this application provides a green composite slab manufacturing process.

[0006] This application provides a manufacturing process for a green composite board, employing the following technical solution:

[0007] A process for preparing a green composite board includes the following steps:

[0008] S1, Clean the surface of the mold table;

[0009] S2, Marking lines, positioning, and arranging the forming mold;

[0010] S3, arrange steel bars inside the forming mold;

[0011] S4, apply opposing forces to the two ends of the reinforcing bar extending from the forming mold to position it;

[0012] S5, pour concrete into the molding mold and shape it;

[0013] S6, post-treatment maintenance.

[0014] Optionally, the concrete in step S5 may contain slag powder or fly ash, and the cement used in the concrete may be sulfoaluminate cement.

[0015] Optionally, before pouring in step S5, the pouring area of ​​the mold corresponding to the forming mold on the surface of the mold table should be cleaned.

[0016] Optionally, a groove is provided on the mold platform, and a matching slide plate is slidably connected in the groove. The slide plate serves as the bottom wall of the molding mold, the width of the slide plate is the same as the width of the molding area in the molding mold, and the length of the slide plate is more than twice the length of the molding area in the molding mold.

[0017] Optionally, a pressing block is vertically and vertically connected to the mold platform. The pressing block has an inclined surface, which is used to press down on the end of the reinforcing bar.

[0018] Optionally, a lifting block is provided on the mold platform corresponding to the forming mold, and the lifting block is used to drive the forming mold to lift.

[0019] Optionally, a transmission component is provided between the lifting block and the pressing block to connect and drive their vertically opposite movements.

[0020] Optionally, the transmission assembly includes a connecting rod, the middle of which is rotatably connected to the mold table, one end of which is movably hinged to the lifting block, and the other end of which is movably hinged to the pressing block.

[0021] Optionally, the bottom of the lifting block is provided with a hydraulic cylinder to drive it to rise.

[0022] Optionally, the mold platform is provided with a spray pipe for spraying release agent, the length direction of the spray pipe is perpendicular to the sliding direction of the slide plate, and the spray pipe is provided with spray heads at intervals along its length direction.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Before concrete pouring, the pressure block is driven to rise to press down on both ends of the reinforcing bar, further horizontally positioning the reinforcing bar and reducing the phenomenon of horizontal displacement of the reinforcing bar during subsequent pouring, ultimately improving the quality of the composite slab; 2. The pressure block applies opposing prestress to the reinforcing bar, which can counteract the internal stress generated during the subsequent concrete forming process, reducing the phenomenon of uneven displacement of the reinforcing bar ends caused by the release of this internal stress.

[0025] 3. During the process of arranging steel bars, some debris and impurities will inevitably fall into the forming mold. These debris are difficult to clean. By using a sliding plate to connect to the mold table, you can simply lift the forming mold and then drive the sliding plate to slide horizontally to replace the clean area as the bottom wall of the forming area. It is simple, convenient and quick.

[0026] 4. During the sliding process of the skateboard, the spray pipe simultaneously sprays the release agent onto the surface of the skateboard. The spraying is uniform and comprehensive, and the use of the release agent makes it easier for the subsequent composite board to be better removed from the molding mold. Attached Figure Description

[0027] Figure 1 This is a flowchart of Example 1.

[0028] Figure 2 This is a cross-sectional view of the mold platform and the forming mold in Example 1.

[0029] Figure 3 This is a top view of the mold platform and molding die in Example 1.

[0030] Figure 4 This is a structural diagram of the spray pipe in Example 1.

[0031] Figure 5 This is a cross-sectional view of the molding die in the width direction in Example 2.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Mold table; 2. Molding mold; 3. Reinforcing bar; 4. Slide groove; 5. Slide plate; 6. Roller; 7. Pressing block; 8. Vertical groove; 9. Inclined surface; 10. Lifting block; 11. Lifting groove; 12. Hydraulic cylinder; 13. Connecting rod; 14. Waist-shaped groove; 15. Fixing frame; 16. Spray pipe; 17. Spray head; 18. Collection groove; 19. Scraper; 20. Pouring area. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] A manufacturing process for a green composite board, such as Figure 1 As shown, the main steps include:

[0036] S1, Clean mold table 1;

[0037] Clean the rust, oil stains and concrete residue from the surface of the mold table 1.

[0038] S2, Arrange the forming mold 2;

[0039] Mark the position of the forming mold 2 on the surface of the mold 1 as needed, and then assemble the templates according to the assembly sequence to form the forming mold 2.

[0040] S3, arrange 3 reinforcing bars;

[0041] Horizontal steel bars 3 are arranged inside the forming mold 2, with both ends of the steel bars 3 protruding out of the forming mold 2.

[0042] S4, cleaning and spraying;

[0043] Clean the debris in the casting area 20 inside the molding mold 2, and spray the casting area 20 with release agent.

[0044] S5, rebar 3 positioning;

[0045] Apply opposing forces to both ends of the reinforcing bar 3 and position the reinforcing bar 3 axially.

[0046] S6, pour concrete;

[0047] Concrete is poured into the pouring area 20 of the molding mold 2 in one go, with the pouring height not exceeding 500mm. It is compacted by mechanical vibration. After pouring, the surface is smoothed and roughened.

[0048] S7, post-treatment maintenance;

[0049] Steam curing is performed using a platform pressure hood.

[0050] S8, demolding and hoisting;

[0051] Remove the molding mold 2 and hoist the formed composite plate to the rinsing area for rinsing.

[0052] In this embodiment, the cement used in the concrete is sulfoaluminate cement. Sulfoaluminate cement has significant advantages in frost resistance, as well as high impermeability and corrosion resistance, thereby improving the impermeability and corrosion resistance of the composite floor slab. The concrete also contains slag powder or fly ash. The utilization of slag powder and fly ash enables the effective recycling of industrial waste and reduces the dependence on cement to a certain extent, thus achieving good environmental benefits.

[0053] like Figure 2 and Figure 3 As shown, the molding mold 2 is placed on the mold table 1. A groove 4 is provided on the mold table 1, and a matching sliding plate 5 is horizontally connected to the groove 4. The sliding plate 5 serves as the bottom plate of the casting area 20 in the molding mold 2, that is, the width of the sliding plate 5 is equal to or greater than the width of the casting area 20. The sliding direction of the sliding plate 5 is set along the length of the casting area 20. Since some debris and impurities inevitably fall into the molding mold 2 during the arrangement of the reinforcing bars 3, these debris are difficult to clean due to the crisscrossing distribution of the reinforcing bars 3. By horizontally connecting the sliding plate 5 to the mold table 1, the clean area can be replaced as the bottom wall of the casting area 20 by driving the sliding plate 5 horizontally. This is simple, convenient and quick, solving the problem of inconvenient cleaning of debris in the casting area 20. In addition, multiple rollers 6 are provided at the bottom of the sliding plate 5. The rollers 6 reduce the frictional resistance of the sliding plate 5, and the sliding plate 5 can be adjusted more smoothly and easily.

[0054] like Figure 2 and Figure 3As shown, abutment blocks 7 are provided at both ends of the reinforcing bar 3 on the mold platform 1. The abutment blocks 7 are vertically slidably connected to the mold platform 1. The mold platform 1 has a vertical groove 8 for the abutment blocks 7 to rise and fall. The top of the abutment blocks 7 has an inclined surface 9 for abutting against the end face of the reinforcing bar 3. In this way, by driving the abutment blocks 7 to rise, the abutment blocks 7 can press against the end of the reinforcing bar 3. The design of the inclined surface 9 can also play a role in adjusting and correcting the reinforcing bar 3. On the one hand, it can achieve axial positioning of the reinforcing bar 3, that is, the reinforcing bar 3 cannot be axially displaced. On the other hand, it can apply opposing prestress to both ends of the reinforcing bar 3. This prestress can offset the internal stress generated in the subsequent concrete forming process and reduce the phenomenon of uneven displacement of the end of the reinforcing bar 3 caused by the release of this internal stress.

[0055] like Figure 2 and Figure 3 As shown, a lifting block 10 is provided on the mold table 1 corresponding to the forming mold 2. A lifting groove 11 is provided on the mold table 1 for the vertical lifting of the lifting block 10. A hydraulic cylinder 12 is provided in the lifting groove 11 to drive the vertical lifting of the lifting block 10. A transmission assembly is provided between the lifting block 10 and the pressing block 7 to drive their reverse movement. This transmission assembly includes a connecting rod 13, the middle of which is rotatably connected to the mold table 1. One end of the connecting rod 13 is movably hinged to the lifting block 10, and the other end is movably hinged to the lifting block 10. Movable blocks are hinged to both ends of the connecting rod 13. Waist-shaped grooves 14 are provided on the lifting block 10 and the pressing block 7 for the movable blocks to slide. Thus, when the hydraulic cylinder 12 drives the lifting block 10 to rise, the forming mold 2 can be lifted vertically. The mold 2 is raised and the pressure block 7 is driven down to no longer abut against the steel bar 3. At this time, the sliding plate 5 can be slid to adjust the position. The forming mold 2 is not pressed on the sliding plate 5, so the sliding plate 5 can slide more smoothly and further reduce frictional resistance. After the adjustment of the sliding plate 5 is completed, the forming mold 2 is driven down slowly with the help of the hydraulic cylinder 12 to achieve a buffering effect and avoid the impact caused by the rapid descent of the forming mold 2. During the descent, the pressure block 7 is driven up simultaneously. Finally, the pressure block 7 presses against the end of the steel bar 3. At the same time, the inclined surface 9 realizes the adjustment and correction of the inaccurate axial position of some steel bars 3. In this way, the steel bars 3 will not have horizontal axial position displacement when pouring concrete, thus improving the quality of the composite slab.

[0056] like Figure 3 and Figure 4As shown, a fixing frame 15 is provided on both sides of the mold 1 corresponding to the forming mold 2. A spray pipe 16 is fixedly installed on the fixing frame 15. Spray nozzles 17 are distributed at intervals along the length of the spray pipe 16. The spray nozzles 17 are used to spray the release agent. The length direction of the spray pipe 16 is consistent with the width direction of the forming mold 2. In this way, during the adjustment of the position of the sliding plate 5, the spray nozzles 17 spray the release agent onto the sliding plate 5, and finally ensure that the area of ​​the sliding plate 5 at the bottom of the casting area 20 is sprayed with release agent. The use of release agent makes it easier for the subsequent composite plate to be better removed from the forming mold 2. Moreover, the spraying of release agent is realized simultaneously during the sliding of the sliding plate 5. The spraying operation is simpler and more convenient, and the spraying is uniform and comprehensive.

[0057] Example 2

[0058] A manufacturing process for a green composite board, such as Figure 5 As shown, the main difference between this and embodiment 1 is that the bottom of the molding mold 2 is provided with a storage groove 18, and a scraper 19 is vertically slidably connected in the storage groove 18. The scraper 19 is long and narrow, and the length direction of the scraper 19 is the width direction of the molding mold 2. With the help of the design of the scraper 19, after the molding mold 2 is lifted, the scraper 19 moves down under its own gravity and its bottom end abuts against the surface of the slide plate 5. When the slide plate 5 slides, the scraper 19 scrapes away the debris on the slide plate 5 and scrapes the debris to a uniform position, which is convenient for subsequent uniform cleaning and improves the efficiency of debris cleaning. When the molding mold 2 is lowered and pressed on the mold table 1, the scraper 19 is completely stored in the storage groove 18, and the scraper 19 will not affect the molding of the molding mold 2.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A process for the production of a green laminated board, characterized in that, Includes the following steps: S1, Clean the surface of the mold (1); S2, mark the positioning and arrange the forming mold (2); S3, arrange steel bars (3) inside the forming mold (2); S4, apply opposing forces to the two ends of the reinforcing bar (3) extending out of the forming mold (2) for positioning; S5, pour concrete into the molding mold (2) and shape it; S6, post-treatment maintenance; Before pouring in step S5, the pouring area (20) of the mold table (1) corresponding to the forming mold (2) is cleaned. The mold table (1) is provided with a groove (4), and a sliding plate (5) adapted to it is slidably connected in the groove (4). The sliding plate (5) serves as the bottom wall of the forming mold (2). The width of the sliding plate (5) is the same as the width of the forming area in the forming mold (2). The length of the sliding plate (5) is more than twice the length of the forming area in the forming mold (2). A pressing block (7) is vertically lifted and lowered on the mold table (1). The pressing block (7) has an inclined surface. (9) The inclined surface (9) is used to press the end of the reinforcing bar (3). A lifting block (10) is provided on the mold table (1) corresponding to the forming mold (2). The lifting block (10) is used to drive the forming mold (2) to lift. A transmission component is provided between the lifting block (10) and the pressing block (7) to connect and drive the two to move vertically in opposite directions. The transmission component includes a connecting rod (13). The middle part of the connecting rod (13) is rotatably connected to the mold table (1). One end of the connecting rod (13) is movably hinged to the lifting block (10), and the other end is movably hinged to the pressing block (7).

2. The preparation process of green laminated board according to claim 1, characterized in that: The concrete in step S5 contains slag powder or fly ash, and the cement used in the concrete is sulfoaluminate cement.

3. The manufacturing process of a green composite board according to claim 1, characterized in that: The bottom of the lifting block (10) is provided with a hydraulic cylinder (12) to drive it to rise.

4. The manufacturing process of a green composite board according to claim 1, characterized in that: The mold platform (1) is provided with a spray pipe (16) for spraying release agent. The length direction of the spray pipe (16) is perpendicular to the sliding direction of the slide plate (5). Spray nozzles (17) are provided at intervals along the length direction of the spray pipe (16).

Images