Preparation process of green laminated plate

Abstract

The invention discloses a preparation process of a green laminated slab, which comprises the following steps: cleaning the surface of a mold table, marking and positioning, arranging a forming mold, arranging a reinforcing steel bar in the forming mold, applying opposite acting forces to the two ends, extending out of the forming mold, of the reinforcing steel bar for positioning, pouring concrete into the forming mold, forming, and post-processing and curing. Before concrete is poured, the abutting blocks are driven to ascend to abut against the two ends of the steel bars, the steel bars are further horizontally positioned, the phenomenon of horizontal displacement of the steel bars in the follow-up pouring process is reduced, and finally the quality of the laminated slab is improved.

Description

Technical Field

[0001] The invention relates to the field of laminated boards, and in particular to a preparation process of green laminated boards. Background Art

[0002] Composite slabs are also called composite floor slabs. Composite slabs are assembled integral slabs made of prefabricated slabs and cast-in-place reinforced concrete layers. Composite slabs have good integrity, and the upper and lower surfaces of the slabs are flat, which is convenient for the decoration of the finishing layer. They are suitable for high-rise buildings and large-span buildings that require high overall rigidity.

[0003] In the production process of the current composite slab, concrete is poured into a forming mold formed by assembling a forming template. Before pouring, steel bars need to be arranged in the pouring area in the forming mold, and the ends of the steel bars protrude from the forming mold. After pouring the concrete, the steel bars and the concrete are combined into one to obtain a composite slab.

[0004] However, in the actual production process, when pouring concrete into the forming mold, the impact force generated during pouring will cause the horizontal displacement of the steel bars, which will eventually lead to differences in the protrusion of the steel bars on the side walls of the composite slab, ultimately affecting the quality of the composite slab, which needs to be further improved. Summary of the invention

[0005] In order to further reduce the horizontal displacement of steel bars and improve the quality of composite panels, the present application provides a preparation process of green composite panels.

[0006] The present application provides a preparation process of a green laminated board, which adopts the following technical solution: A preparation process of a green laminated board comprises the following steps: S1, clean the surface of the die table; S2, marking and positioning and arranging the forming mold; S3, arranging steel bars in the forming mold; S4, applying forces acting in opposite directions to the two ends of the steel bar extending out of the forming die to position the steel bar; S5, pouring concrete into the forming mold and forming it; S6, post-processing and maintenance.

[0007] Optionally, the concrete in step S5 is mixed with slag powder or fly ash, and the cement in the concrete is sulphoaluminate cement.

[0008] Optionally, before pouring in step S5, the pouring area of ​​the mold platform surface corresponding to the forming mold is cleaned.

[0009] Optionally, a slide groove is provided on the mold platform, and a slide plate adapted to the slide groove is slidably connected in the slide groove. The slide plate serves as the bottom wall of the forming mold. The width of the slide plate is consistent with the width of the forming area in the forming mold, and the length of the slide plate is greater than twice the length of the forming area in the forming mold.

[0010] Optionally, a pressure block is vertically lifted and connected to the mold platform, and the pressure block has an inclined surface, which is used to press the end of the steel bar.

[0011] 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.

[0012] Optionally, a transmission component is provided between the lifting block and the pressing block to connect and transmit the two to move vertically in opposite directions.

[0013] Optionally, the transmission assembly includes a connecting rod, the middle part of which is rotatably connected to the mold platform, one end of the connecting rod is movably hinged on the lifting block, and the other end of the connecting rod is movably hinged on the pressing block.

[0014] Optionally, a hydraulic cylinder is provided at the bottom of the lifting block to drive it to rise.

[0015] Optionally, a spray pipe for spraying a demoulding agent is provided on the mold platform, 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 the length direction thereof.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. Before pouring concrete, the pressure blocks are driven up to press the two ends of the steel bars, further horizontally positioning the steel bars, reducing the horizontal displacement of the steel bars during the subsequent pouring process, and ultimately improving the quality of the composite slab; 2. The pressure blocks apply opposite prestress to the steel bars, which can offset the internal stress generated in the subsequent concrete forming process, reducing the phenomenon of uneven outward displacement of the steel bar ends caused by the release of the internal stress; 3. Since some debris and impurities will inevitably fall into the forming mold during the arrangement of steel bars, these debris are difficult to clean. The slide plate is connected to the mold table through horizontal sliding. It only needs to lift the forming mold and then drive the slide plate to slide horizontally to replace the clean area as the bottom wall of the forming area. It is simple, convenient and fast. 4. During the sliding process of the skateboard, the spray pipe simultaneously sprays the release agent on the surface of the skateboard. The spraying is uniform and comprehensive. The use of the release agent facilitates the subsequent laminated board to be better removed from the forming mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flow chart of Example 1.

[0018] Figure 2 It is a cross-sectional view of the mold base and the molding mold in Example 1.

[0019] Figure 3 It is a top view of the mold platform and the molding mold in Example 1.

[0020] Figure 4 It is a structural diagram of the spray pipe in Example 1.

[0021] Figure 5 It is a cross-sectional view in the width direction of the molding die in Example 2.

[0022] Description of reference numerals: 1. Mould base; 2. Forming mould; 3. Steel bar; 4. Slide; 5. Slide plate; 6. Roller; 7. Pressure block; 8. Vertical groove; 9. Inclined surface; 10. Lifting block; 11. Lifting groove; 12. Hydraulic cylinder; 13. Connecting rod; 14. Waist-shaped groove; 15. Fixed frame; 16. Spray pipe; 17. Spray head; 18. Storage groove; 19. Scraper; 20. Casting area. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-5 This application is described in further detail.

[0024] A preparation process of a green laminated board, such as Figure 1 As shown, it mainly includes the following steps: S1, cleaning mold table 1; Clean the rust, oil stains and concrete residues on the surface of the mold platform 1.

[0025] S2, arranging the forming mold 2; Lines are drawn on the surface of the mold platform 1 as required to determine the position of the forming mold 2, and then the templates are assembled according to the assembly sequence to form the forming mold 2.

[0026] S3, arrange steel bar 3; A horizontal steel bar 3 is arranged in the forming mold 2 , and both ends of the steel bar 3 pass through the forming mold 2 .

[0027] S4, cleaning and spraying; The debris in the casting area 20 in the forming mold 2 is cleaned, and a release agent is sprayed in the casting area 20 .

[0028] S5, reinforcement 3 positioning; Opposite forces are applied to both ends of the steel bar 3 and the steel bar 3 is axially positioned.

[0029] S6, pouring concrete; Concrete is poured into the pouring area 20 of the forming mold 2. The pouring is completed in one time. The feeding height is not more than 500 mm. Mechanical vibration is used for compaction. After the pouring is completed, the surface is calendered and roughened.

[0030] S7, post-treatment maintenance; Use platform pressure hood for steam curing.

[0031] S8, dismantling the formwork and hoisting; The forming mold 2 is removed, and the formed composite board is hoisted to the washing area for washing.

[0032] The cement in the concrete of this embodiment is sulphoaluminate cement, which has obvious advantages in frost resistance and also has high impermeability and corrosion resistance, thereby improving the impermeability and corrosion resistance of the composite floor slab; the concrete is also mixed with slag powder or fly ash, and the use of slag powder and fly ash realizes the effective recovery of industrial waste residues and also reduces the dependence on cement to a certain extent, thereby achieving good environmental benefits.

[0033] like Figure 2 and Figure 3 As shown, the forming mold 2 is placed on the mold platform 1, and a slide groove 4 is opened on the mold platform 1. A slide plate 5 adapted to it is horizontally slidably connected in the slide groove 4. The slide plate 5 serves as the bottom plate of the casting area 20 in the forming mold 2, that is, the width of the slide plate 5 is equal to or greater than the width of the casting area 20, and the sliding direction of the slide plate 5 is set along the length of the casting area 20; since it is inevitable that some debris and impurities will fall into the forming mold 2 during the arrangement of the steel bars 3, these debris are difficult to clean due to the criss-cross distribution of the steel bars 3, and the slide plate 5 is connected to the mold platform 1 by horizontal sliding, and the clean area can be replaced as the bottom wall of the casting area 20 by driving the slide plate 5 to slide horizontally, which is simple, convenient and quick, and solves the problem of inconvenient cleaning of debris in the casting area 20; in addition, a plurality of rollers 6 are arranged at the bottom of the slide plate 5, and the friction resistance of the slide plate 5 is reduced by means of the rollers 6, so that the slide plate 5 can be slid and adjusted more smoothly and easily.

[0034] like Figure 2 and Figure 3As shown, pressure blocks 7 are provided at the two ends of the mold platform 1 corresponding to the steel bars 3. The pressure blocks 7 are vertically lifted and slidably connected to the mold platform 1. The mold platform 1 has a vertical groove 8 for lifting the pressure blocks 7. The top of the pressure blocks 7 has an inclined surface 9 for abutting against the end face of the steel bar 3. In this way, the pressure blocks 7 are driven to rise and the ends of the steel bars 3 are pressed against by the pressure blocks 7. The design of the inclined surface 9 can also play a role in adjusting and correcting the steel bars 3. On the one hand, the axial positioning of the steel bars 3 can be achieved, that is, the steel bars 3 cannot be displaced axially. On the other hand, the two ends of the steel bars 3 are applied with opposite prestresses. The prestress can offset the internal stress generated in the subsequent concrete forming process, and reduce the phenomenon that the ends of the steel bars 3 are moved outward and uneven due to the release of the internal stress.

[0035] like Figure 2 and Figure 3 As shown, a lifting block 10 is arranged at the mold platform 1 corresponding to the molding mold 2, and a lifting groove 11 is arranged on the mold platform 1 for the lifting block 10 to lift vertically, and a hydraulic cylinder 12 is arranged in the lifting groove 11 for driving the lifting block 10 to lift vertically. In addition, a transmission component for transmitting the reverse movement of the lifting block 10 and the pressing block 7 is arranged between the lifting block 10 and the pressing block 7, and the transmission component includes a connecting rod 13, the middle part of the connecting rod 13 is rotatably connected to the mold platform 1, one end of the connecting rod 13 is movably hinged on the lifting block 10, and the other end is movably hinged on the lifting block 10, and both ends of the connecting rod 13 are hinged with movable blocks, and waist-shaped grooves 14 for the movable blocks to slide are provided on the lifting block 10 and the pressing block 7, so that when the hydraulic cylinder 12 drives the lifting block 10 to rise, the molding The mold 2 is lifted and the pressure block 7 is driven to descend synchronously and no longer abut against the steel bar 3. At this time, the sliding plate 5 can be slid to adjust the position. At this time, the forming mold 2 is not pressed on the sliding plate 5, so that the sliding plate 5 can slide more smoothly, further reducing the friction resistance; after completing the adjustment of the sliding plate 5, the forming mold 2 is driven to slowly descend with the help of the hydraulic cylinder 12 to achieve a buffering effect, avoiding the situation where the forming mold 2 descends quickly and causes a collision. During the descent, the pressure block 7 is synchronously driven to move up, and finally the pressure block 7 is pressed 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, so that the steel bars 3 will not have a horizontal axial position deviation during the subsequent pouring of concrete, thereby ultimately improving the quality of the composite plate.

[0036] like Figure 3 and Figure 4As shown, a fixing frame 15 is provided on both sides of the mold table 1 corresponding to the forming mold 2, and a spray pipe 16 is fixedly provided on the fixing frame 15. The spray pipe 16 has spray heads 17 spaced apart along its length direction. The spray head 17 is used for spraying a demoulding 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 process of adjusting the position of the sliding slide 5, the spray head 17 sprays the demoulding agent onto the slide 5, and finally ensures that the slide 5 area at the bottom of the casting area 20 is sprayed with the demoulding agent. The use of the demoulding agent facilitates the subsequent better removal of the composite plate from the forming mold 2, and the spraying of the demoulding agent is simultaneously realized during the sliding process of the slide 5, and the spraying operation is simpler and more convenient, and the spraying is uniform and comprehensive.

[0037] Example 2 A preparation process of a green laminated board, such as Figure 5 As shown, the main difference between it and Example 1 is that a receiving groove 18 is provided at the bottom of the molding mold 2, and a scraper 19 is vertically slidably connected in the receiving groove 18. The light plate 19 is in the shape of a long strip, 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 downward under the action of 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 off the debris on the slide plate 5 and scrapes the debris to a uniform position, which is convenient for subsequent unified cleaning and improves the efficiency of cleaning the debris. When the molding mold 2 is pressed down on the mold table 1, the scraper 19 is stored in the receiving groove 18 as a whole, and the scraper 19 will not affect the molding of the molding mold 2.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A process for preparing a green laminated board, characterized in that: The following steps are involved: S1, cleaning the surface of the mold platform (1); S2, marking and positioning and arranging the forming mold (2); S3, arranging steel bars (3) in the forming mold (2); S4, applying forces acting in opposite directions to the two ends of the steel bar (3) extending out of the forming die (2) to position the steel bar (3); S5, pouring concrete into the forming mold (2) and forming it; S6, post-processing and maintenance.

2. The process for preparing a green laminated board according to claim 1, characterized in that: The concrete in step S5 is mixed with slag powder or fly ash, and the cement in the concrete is sulphoaluminate cement.

3. The process for preparing a green laminated board according to claim 1, characterized in that: Step S5: Before pouring, the pouring area (20) of the mold platform (1) corresponding to the molding mold (2) is cleaned.

4. The process for preparing a green laminated board according to claim 3, characterized in that: The mold platform (1) is provided with a slide groove (4), and a slide plate (5) adapted thereto is slidably connected in the slide groove (4), and the slide plate (5) serves as the bottom wall of the molding mold (2). The width of the slide plate (5) is consistent with the width of the molding area in the molding mold (2), and the length of the slide plate (5) is greater than twice the length of the molding area in the molding mold (2).

5. The process for preparing a green laminated board according to claim 4, characterized in that: A pressing block (7) is vertically connected to the mold platform (1), and the pressing block (7) has an inclined surface (9) for pressing the end of the steel bar (3).

6. The process for preparing a green laminated board according to claim 5, characterized in that: A lifting block (10) is provided on the mold platform (1) at a position corresponding to the molding mold (2), and the lifting block (10) is used to drive the molding mold (2) to lift up.

7. The process for preparing a green laminated board according to claim 6, characterized in that: A transmission assembly is provided between the lifting block (10) and the pressing block (7) for connecting and transmitting the two to move vertically in opposite directions.

8. The process for preparing a green laminated board according to claim 7, characterized in that: The transmission assembly comprises a connecting rod (13), the middle part of which is rotatably connected to the die table (1), one end of which is movably hinged to the lifting block (10), and the other end of which is movably hinged to the pressing block (7).

9. The process for preparing a green laminated board according to claim 8, characterized in that: The bottom of the lifting block (10) is provided with a hydraulic cylinder (12) for driving the lifting block (10) to rise.

10. The process for preparing a green laminated board according to claim 4, characterized in that: The mold platform (1) is provided with a spray pipe (16) for spraying a demoulding agent, the length direction of the spray pipe (16) is perpendicular to the sliding direction of the slide plate (5), and the spray pipe (16) is provided with spray heads (17) at intervals along its length direction.

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