Autoclaved sand aerated concrete slab pouring mold and using method thereof

Abstract

The invention discloses an autoclaved sand aerated concrete slab pouring mold and a using method thereof.The autoclaved sand aerated concrete slab pouring mold comprises a lower mold and an upper mold plate, the upper mold plate covers the lower mold, two side plates are spliced to the outer edge of the lower mold, the lower mold, the upper mold plate and the two side plates form a sealing structure, a limiting mechanism is arranged in the lower mold, and the limiting mechanism is arranged in the lower mold. And a plurality of evenly-distributed elastic supporting blocks are arranged in the lower mold, and arc-shaped grooves are formed in the tops of the elastic supporting blocks and used for bearing the reinforcing steel bar net rack. All parts in the autoclaved aerated concrete slab pouring mold are easily separated, demolding is rapid and smooth, the product damage risk is greatly reduced, and production benefits are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building material production molds, and specifically relates to an autoclaved sand aerated concrete board casting mold and its usage method. Background Technique

[0002] In the field of building material production, autoclaved sand aerated concrete boards, as a new type of lightweight wall material, are widely used in various construction projects. Their production is inseparable from casting molds, and the performance of the molds directly affects the quality and production efficiency of concrete boards.

[0003] Existing traditional casting molds often adopt an integral or complex splicing structure. In the demolding link after concrete casting and curing and forming, operators need to spend a lot of energy and time disassembling the molds. The operation is cumbersome, and the stress is concentrated on the weak parts of the concrete board during demolding, which is extremely likely to cause appearance defects such as cracks and missing corners on the concrete board, reducing the product qualification rate and unable to meet the requirements of some building scenarios with high strength and stability requirements.

[0004] Therefore, we make improvements on this and propose an autoclaved sand aerated concrete board casting mold and its usage method. Summary of the Invention

[0005] The purpose of the present invention is to provide an autoclaved sand aerated concrete board casting mold and its usage method to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An autoclaved sand aerated concrete board casting mold includes a lower mold and an upper template. The upper template covers above the lower mold. It is characterized in that: two side plates are spliced at the outer edge of the lower mold, and the lower mold, the upper template and the two side plates form a sealed structure. A limiting mechanism is arranged inside the lower mold for limiting and fixing the two side plates. A plurality of evenly distributed elastic support blocks are arranged inside the lower mold. An arc-shaped groove is opened at the top of the elastic support block for supporting a steel bar grid.

[0007] Preferably, a dovetail block is fixed at the bottom of the side plate, and the dovetail block is slidably inserted into a dovetail groove opened on the outer edge of the lower mold.

[0008] Preferably, the limiting mechanism is arranged in an installation groove inside the lower mold. The limiting mechanism includes a worm rotatably fitted on one side of the inner wall of the installation groove. A threaded rod is rotatably fitted on the inner wall of the installation groove. A worm gear is installed at the lower end of the threaded rod. A trapezoidal plate is threadedly fitted on the threaded rod. Two guide grooves are opened on one side of the trapezoidal plate. A U-shaped connecting seat is slidably fitted on the inner wall of the guide groove. Plug rods are fixedly connected to the opposite sides of the two U-shaped connecting seats. One end of the worm is fixedly connected to a knob. The knob is located on the outer side wall of the lower mold. The worm is meshed with the worm gear. The plug rods are slidably fitted on both sides of the inner wall of the installation groove, and the plug rods are matched with jacks opened on the dovetail groove.

[0009] Preferably, a spring buckle is installed on the lower mold, and a mating block is correspondingly installed on the upper template. The upper template and the lower mold are fixed by buckling the spring buckle onto the mating block.

[0010] Preferably, trapezoidal blocks are fixedly connected to the upper sides of both side plates, and two trapezoidal grooves mating with the trapezoidal blocks are provided on the lower side of the upper template.

[0011] Preferably, a plurality of reinforcing ribs are fixedly connected to both sides of the lower mold, and lifting lugs are fixedly connected to the other two sides of the lower mold.

[0012] In order to better understand the above technical solution, the following usage steps are proposed:

[0013] S1 Side plate installation: Align the dovetail groove on the lower side of the side plate with the dovetail block on the upper side of the lower mold, slowly push the side plate, and the dovetail groove slides along the dovetail block until the side plate is installed in place. At this time, the jacks on both sides of the dovetail block are in corresponding positions;

[0014] S2 Place the steel bar grid: Place the steel bar grid on the elastic support blocks on both sides of the inner wall of the lower mold. The arc-shaped grooves on the elastic support blocks can accurately support the steel bar grid, keep it in a stable position, and can withstand a certain impact force;

[0015] S3 Upper template installation: Then install the upper template above the lower mold, so that the mating blocks on both sides of the upper template cooperate with the spring buckles on the inner wall of the lower mold to achieve preliminary fixation. At the same time, the trapezoidal grooves on the lower side of the upper template fit with the trapezoidal blocks on the upper side of the side plates, further ensuring the tightness and accuracy of the assembly of the upper template, side plates and lower mold;

[0016] S4 Fix the side plate: Fix the side plate by rotating the knob of the limit mechanism. The knob drives the worm to rotate. Since the worm meshes with the worm wheel, the worm wheel rotates accordingly, and then drives the threaded rod to rotate. The trapezoidal plate threadedly engaged with the threaded rod can only move in a straight line up and down under the cooperation of the guide groove and the U-shaped connecting seat. As the threaded rod rotates, the trapezoidal plate moves downward, squeezing the U-shaped connecting seat to move to both sides, so that the insertion rod is inserted into the jack, firmly fixing the side plate on the lower mold and ensuring the stability of the side plate in subsequent operations;

[0017] S5 Slurry pouring: After the mold assembly is completed, the prepared autoclaved sand aerated concrete slurry is injected into the mold interior through an external device (from a specific pouring port of the mold or other suitable positions). The elastic support blocks buffer the impact of the slurry on the steel bar grid, ensure the stable position of the grid, and guarantee the uniform internal structure of the concrete slab. With the side plates fixed by structures such as dovetail grooves and insertion rods, and the cooperation of the upper template, a sealed pouring space is formed, enabling the slurry to be evenly filled until it reaches the predetermined height;

[0018] S6 Demoulding - Separation of the upper template: After the concrete slab is cured and formed, the demoulding operation begins. First, press the spring buckle to release the fitting block from the buckle constraint, then lift the upper template upward to separate it from the lower mold and the side plates.

[0019] S7 Demoulding - Release the fixation of the side plates: Then, reverse - rotate the knob of the limit mechanism. The worm drives the worm gear to reverse, causing the threaded rod to drive the trapezoidal plate to move upward, and the insertion rod is withdrawn from the jack, thus releasing the fixed connection between the side plates and the lower mold.

[0020] S8 Demoulding - Remove the side plates: Slide the side plates outwards along the dovetail grooves.

[0021] S9 Demoulding - Remove the concrete slab: Finally, take out the formed concrete slab from the lower mold. Since the elastic support blocks have a certain elasticity, they will not cause jamming to the concrete slab, facilitating smooth demoulding. The reinforcing ribs on both sides of the lower mold enhance the overall structural strength of the mold, and the lifting lugs facilitate the operation of the mold during hoisting, such as hoisting the mold to the working position before assembly and hoisting it to the storage or cleaning area after demoulding.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The present invention is provided with a limit mechanism, which is composed of a worm, a worm gear, a threaded rod, etc. During assembly, the side plates are accurately fixed to ensure stable pouring. During demoulding, reverse - rotate the knob, and the insertion rod can be conveniently withdrawn to release the restraint of the side plates. Combined with the spring buckle and the trapezoidal structure, each component can be easily separated, and the demoulding is fast and smooth, greatly reducing the risk of product damage and improving production efficiency. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall three - dimensional structure provided by this application;

[0025] Figure 2 It is a schematic diagram of the cross - section structure of the upper template provided by this application;

[0026] Figure 3 It is a schematic diagram of the cross - section structure of the lower mold provided by this application;

[0027] Figure 4 It is provided by this application Figure 3 The enlarged schematic diagram of the structure at A in

[0028] Figure 5 It is a schematic diagram of the structure of the connection of the trapezoidal plate provided by this application.

[0029] In the figure: 1. Lower mold; 2. Upper template; 3. Side plate; 4. Dovetail groove; 5. Dovetail block; 6. Jack hole; 7. Installation groove; 8. Limiting mechanism; 81. Worm; 82. Threaded rod; 83. Worm gear; 84. Trapezoidal plate; 85. Guide groove; 86. U-shaped connecting seat; 87. Insert rod; 88. Knob; 9. Spring buckle; 10. Matching block; 11. Trapezoidal block; 12. Trapezoidal groove; 13. Elastic support block; 14. Arc groove; 15. Reinforcing rib; 16. Lifting lug. Specific implementation mode

[0030] 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.

[0031] Refer to Figures 1-5 , the structure, manufacturing process and usage method of the autoclaved sand aerated concrete board casting mold are as follows:

[0032] I. Manufacturing and preparation of mold components

[0033] Manufacture of the lower mold 1: High-strength steel is used as the manufacturing material of the lower mold 1 and is formed by processes such as cutting and welding. At the outer edge of the lower mold 1, the dovetail groove 4 is precisely machined to ensure the dimensional accuracy of the dovetail groove 4 so that it can be closely matched with the dovetail block 5 at the bottom of the side plate 3. At the same time, an installation groove 7 is opened at a suitable position inside the lower mold 1 for installing the limiting mechanism 8; a rotating shaft is provided on one side of the inner wall of the installation groove 7 for installing the worm 81 and ensuring that the worm 81 can rotate flexibly; a bearing for supporting the threaded rod 82 is installed on the inner wall of the installation groove 7 to enable the threaded rod 82 to rotate stably; elastic support blocks 13 are evenly installed on both sides of the inner wall of the lower mold 1 to ensure that the elastic support blocks 13 are firmly installed and the arc grooves 14 at the top are in a horizontal state. A spring buckle 9 is installed on the lower mold 1 to ensure that the spring buckle 9 can be buckled on the matching block 10 for fixation. A plurality of reinforcing ribs 15 are welded on both sides of the lower mold 1 to enhance the overall strength of the mold, and lifting lugs 16 are welded on the other two sides of the lower mold 1 for convenient lifting of the mold.

[0034] Manufacture of the upper template 2: High-strength steel is also selected to manufacture the upper template 2, which is processed according to the design dimensions. Matching blocks 10 are installed on both sides of the upper template 2 to ensure that the matching blocks 10 can be accurately matched with the spring buckles 9 on the lower mold 1; two trapezoidal grooves 12 matching the trapezoidal blocks 11 on the side plate 3 are opened on the lower side of the upper template 2 to ensure the accurate shape and size of the trapezoidal grooves 12.

[0035] Fabrication of the side plate 3: The side plate 3 is fabricated using the same material steel as the lower die 1 and the upper template 2. A dovetail block 5 is welded to the bottom of the side plate 3 to ensure a firm connection between the dovetail block 5 and the side plate 3 and the dimensions meet the requirements of the dovetail groove 4. A trapezoidal block 11 is welded to the upper side of the side plate 3 to ensure the accurate position and shape of the trapezoidal block 11, enabling it to fit well with the trapezoidal groove 12 of the upper template 2.

[0036] Assembly of the limiting mechanism 8: Install the worm 81 on the rotating shaft on the inner wall of the installation groove 7 of the lower die 1 to ensure smooth rotation of the worm 81. Install the worm gear 83 at the lower end of the threaded rod 82 so that the worm gear 83 can mesh accurately with the worm 81. Install the threaded rod 82 on the bearing on the inner wall of the installation groove 7, and install the trapezoidal plate 84 on the threaded rod 82 through threaded fit. A guide groove 85 is opened on one side of the trapezoidal plate 84, and the U-shaped connecting seat 86 is installed in the guide groove 85 to ensure that the U-shaped connecting seat 86 can slide in the guide groove 85. Fix the insertion rod 87 on the U-shaped connecting seat 86. Finally, install the knob 88 at one end of the worm 81 and make it located on the outer wall of the lower die 1.

[0037] II. Die assembly process

[0038] Installation of the side plate 3: Carry the fabricated side plate 3 to the side of the lower die 1, align the dovetail groove 4 on the lower side of the side plate 3 with the dovetail block 5 on the upper side of the lower die 1, and slowly push the side plate 3 to make the dovetail groove 4 slide smoothly along the dovetail block 5 until the side plate 3 is completely installed in place. At this time, ensure that the insertion holes 6 on both sides of the dovetail block 5 are in corresponding positions.

[0039] Placement of the steel bar grid: Carefully place the processed steel bar grid on the elastic support blocks 13 on both sides of the inner wall of the lower die 1, and use the arc-shaped grooves 14 at the top of the elastic support blocks 13 to accurately support the steel bar grid, keeping the steel bar grid in a stable position.

[0040] Installation of the upper template 2: Lift the upper template 2 and place it above the lower die 1, align the mating blocks 10 on both sides of the upper template 2 with the spring buckles 9 on the inner wall of the lower die 1 accurately, and then gently press down the upper template 2 to make the spring buckles 9 snap onto the mating blocks 10, achieving the preliminary fixation of the upper template 2 and the lower die 1. At the same time, ensure that the trapezoidal groove 12 on the lower side of the upper template 2 fits with the trapezoidal block 11 on the upper side of the side plate 3, further ensuring the tightness and accuracy of the assembly of the upper template 2, the side plate 3, and the lower die 1.

[0041] Fixed side plate 3: By turning the knob 88 of the rotation limiting mechanism 8 on the outer wall of the lower mold 1, the worm 81 is driven to rotate. Since the worm 81 meshes with the worm wheel 83, the worm wheel 83 rotates accordingly, and then drives the threaded rod 82 to rotate. The trapezoidal plate 84 threadedly engaged with the threaded rod 82 can only move in a straight line up and down under the combined action of the guide groove 85 and the U-shaped connecting seat 86. As the threaded rod 82 rotates, the trapezoidal plate 84 moves downward, squeezing the U-shaped connecting seat 86 to move to both sides, so that the insertion rod 87 is inserted into the insertion hole 6 opened on the dovetail groove 4, firmly fixing the side plate 3 on the lower mold 1 and ensuring the stability of the side plate 3 in subsequent operations.

[0042] III. Slurry pouring process

[0043] After the mold assembly is completed, the prepared autoclaved sand aerated concrete slurry is injected into the mold interior through an external device such as a concrete pump truck from a specific pouring port of the mold that can be set as needed on the upper template 2 or other suitable positions. During the slurry injection process, the elastic support blocks 13 inside the lower mold 1 can effectively buffer the impact of the slurry on the steel bar grid, ensuring the stable position of the steel bar grid and guaranteeing the uniform internal structure of the concrete slab. At the same time, the side plates 3 on both sides, under the fixation of structures such as the dovetail groove 4 and the insertion rod 87, and in cooperation with the upper template 2, form a sealed pouring space, enabling the slurry to be evenly filled until it reaches the predetermined height.

[0044] IV. Demolding process

[0045] Separation of the upper template 2: After the concrete slab is cured and formed, the demolding operation begins. First, press the spring buckle 9 on the lower mold 1 to release the cooperation block 10 from the buckle restraint, and then lift the upper template 2 upward to separate it from the lower mold 1 and the side plate 3.

[0046] Release the fixation of the side plate 3: Reverse-rotate the knob 88 of the rotation limiting mechanism 8, the worm 81 drives the worm wheel 83 to reverse, so that the threaded rod 82 drives the trapezoidal plate 84 to move upward, and the insertion rod 87 is withdrawn from the insertion hole 6, releasing the fixed connection between the side plate 3 and the lower mold 1.

[0047] Remove the side plate 3: Slide the side plate 3 outwards along the dovetail groove 4 to complete the disassembly of the side plate 3.

[0048] Take out the concrete slab: Carefully take out the formed concrete slab from the lower mold 1. Since the elastic support blocks 13 have a certain elasticity, they will not cause jamming to the concrete slab, facilitating smooth demolding. After demolding, the mold can be lifted by the lifting lugs 16 to the storage or cleaning area for the next use.

[0049] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An autoclaved sand aerated concrete board casting mold, comprising a lower mold (1) and an upper template (2), the upper template (2) covering above the lower mold (1), characterized in that: Two side plates (3) are spliced at the outer edge of the lower die (1). The lower die (1), the upper template (2) and the two side plates (3) form a sealed structure. A limiting mechanism (8) is arranged inside the lower die (1) for limiting and fixing the two side plates (3). A plurality of uniformly distributed elastic support blocks (13) are arranged inside the lower die (1). An arc-shaped groove (14) is formed at the top of the elastic support block (13) for supporting the steel bar grid.

2. The autoclaved sand aerated concrete slab casting mold according to claim 1, characterized in that: A dovetail block (5) is fixed at the bottom of the side plate (3), and the dovetail block (5) is slidably inserted into a dovetail groove (4) formed on the outer edge of the lower die (1).

3. The autoclaved sand aerated concrete slab casting mold according to claim 2, characterized in that: The limiting mechanism (8) is arranged in an installation groove (7) inside the lower die (1). The limiting mechanism (8) includes a worm (81) rotatably fitted on one side of the inner wall of the installation groove (7). A threaded rod (82) is rotatably fitted on the inner wall of the installation groove (7). A worm gear (83) is installed at the lower end of the threaded rod (82). A trapezoidal plate (84) is in threaded fit with the threaded rod (82). Two guide grooves (85) are formed on one side of the trapezoidal plate (84). A U-shaped connecting seat (86) is slidably fitted on the inner wall of the guide groove (85). Plug rods (87) are fixedly connected to opposite sides of the two U-shaped connecting seats (86). One end of the worm (81) is fixedly connected to a knob (88). The knob (88) is located on the outer side wall of the lower die (1). The worm (81) meshes with the worm gear (83). The plug rods (87) are slidably fitted on both sides of the inner wall of the installation groove (7). The plug rods (87) are matched with insertion holes (6) formed on the dovetail groove (4).

4. The autoclaved sand aerated concrete slab casting mold according to claim 1, characterized in that: A spring buckle (9) is installed on the lower die (1), and a matching block (10) is correspondingly installed on the upper template (2). The upper template (2) and the lower die (1) are fixed by buckling the spring buckle (9) on the matching block (10).

5. The autoclaved sand aerated concrete slab casting mold according to claim 1, characterized in that: Trapezoidal blocks (11) are fixedly connected to the upper sides of the two side plates (3). Two trapezoidal grooves (12) matching with the trapezoidal blocks (11) are formed on the lower side of the upper template (2).

6. The autoclaved sand aerated concrete slab casting mold according to claim 1, characterized in that: A plurality of reinforcing ribs (15) are fixedly connected to both sides of the lower die (1). Lifting lugs (16) are fixedly connected to the other two sides of the lower die (1).

7. A method for using an autoclaved aerated concrete slab casting mold according to any one of claims 1-6, characterized in that: Including the following steps: S1 Side plate installation: Align the dovetail groove (4) on the lower side of the side plate (3) with the dovetail block (5) on the upper side of the lower die (1), and slowly push the side plate (3). The dovetail groove (4) slides along the dovetail block (5) until the side plate (3) is installed in place. At this time, the insertion holes (6) on both sides of the dovetail block (5) are in corresponding positions. S2 Placing the steel bar grid: Place the steel bar grid on the elastic support blocks (13) on both sides of the inner wall of the lower die (1). The arc-shaped grooves (14) on the elastic support blocks (13) can accurately support the steel bar grid, keep it in a stable position, and can withstand a certain impact force. Installation of the upper template on S3: Then, install the upper template (2) above the lower mold (1) so that the mating blocks (10) on both sides of the upper template (2) are engaged with the spring latches (9) on the inner wall of the lower mold (1) to achieve preliminary fixation. At the same time, the trapezoidal grooves (12) on the lower side of the upper template (2) fit with the trapezoidal blocks (11) on the upper side of the side plate (3) to further ensure the tightness and accuracy of the assembly of the upper template (2) with the side plate (3) and the lower mold (1); S4 Fix the side plate: Fix the side plate (3) by rotating the knob (88) of the limiting mechanism (8). The knob (88) drives the worm (81) to rotate. Since the worm (81) is engaged with the worm gear (83), the worm gear (83) rotates accordingly, and then drives the threaded rod (82) to rotate. The trapezoidal plate (84) threadedly engaged with the threaded rod (82) can only move linearly up and down under the cooperation of the guide groove (85) and the U-shaped connecting seat (86). As the threaded rod (82) rotates, the trapezoidal plate (84) moves downward, squeezing the U-shaped connecting seat (86) to move to both sides, so that the insertion rod (87) is inserted into the insertion hole (6) to firmly fix the side plate (3) on the lower mold (1) and ensure the stability of the side plate (3) in subsequent operations; S5 Pour the slurry: After the mold assembly is completed, pour the prepared autoclaved sand aerated concrete slurry into the mold interior through an external device (such as a concrete pump truck, etc.) from a specific pouring port of the mold (which can be set on the upper template (2) or other appropriate positions as required). The elastic support block (13) buffers the impact of the slurry on the steel bar grid, ensuring the stable position of the grid and guaranteeing the uniform internal structure of the concrete slab. The side plates (3) on both sides, under the fixation of structures such as the dovetail groove (4) and the insertion rod (87), and in cooperation with the upper template (2), form a sealed pouring space, enabling the slurry to be evenly filled until it reaches the predetermined height; S6 Demoulding - Separation of the upper template: After the concrete slab is cured and formed, start the demoulding operation. First, press the spring latch (9) to disengage the mating block (10) from the latch restraint, and lift the upper template (2) upward to separate it from the lower mold (1) and the side plate (3); S7 Demoulding - Release the fixation of the side plate: Then, rotate the knob (88) of the limiting mechanism (8) in the reverse direction. The worm (81) drives the worm gear (83) to reverse, causing the threaded rod (82) to drive the trapezoidal plate (84) to move upward, and the insertion rod (87) is withdrawn from the insertion hole (6) to release the fixed connection between the side plate (3) and the lower mold (1); S8 Demoulding - Remove the side plate: Slide the side plate (3) outwards along the dovetail groove (4); S9 Demoulding - Remove the concrete slab: Finally, take out the formed concrete slab from the lower mold (1). Since the elastic support block (13) has a certain elasticity, it will not cause jamming to the concrete slab, facilitating smooth demoulding. The reinforcing ribs (15) on both sides of the lower mold (1) enhance the overall structural strength of the mold, and the lifting lugs (16) facilitate the operation of the mold during the hoisting process, such as hoisting the mold to the working position before mold assembly and hoisting it to the storage or cleaning area after demoulding.

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