A forming device for autoclaved aerated concrete blocks
By designing a top mold structure driven by an electric push rod and a cylinder, the problem of difficult demolding in existing devices was solved, realizing automatic demolding of autoclaved aerated concrete blocks, improving molding efficiency and reducing block damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA MUERMA BUILDING MATERIAL
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-28
AI Technical Summary
Existing autoclaved aerated concrete (AAC) block molding equipment has difficulty removing the molded blocks from the bottom mold, which easily leads to edge breakage and reduces molding efficiency.
An autoclaved aerated concrete (AAC) block molding device was designed, which adopts a top mold structure driven by an electric push rod and a cylinder. Automatic demolding is achieved through the coordinated movement of the vertical rod and the horizontal plate, and the spring buffer force is used to avoid damage to the blocks.
It enables automatic demolding of concrete blocks, avoiding the need for external prying during manual removal, improving molding efficiency, and reducing the risk of block edge breakage.
Smart Images

Figure CN224561485U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of concrete block production technology, and in particular to a molding device for autoclaved aerated concrete blocks. Background Technology
[0002] Autoclaved aerated concrete (AAC) blocks are porous concrete products made from fly ash, lime, cement, gypsum, slag, and other main raw materials, with the addition of appropriate amounts of foaming agents, regulators, and bubble stabilizers. The process involves batching, mixing, pouring, static curing, cutting, and high-pressure autoclaving. However, current molding equipment leaves the concrete blocks encased in the bottom mold after extrusion molding, making it difficult for personnel to remove them. This necessitates external prying, which can easily damage the edges and corners of the blocks, thus reducing the efficiency of AAC block molding.
[0003] There is an existing Chinese patent (authorization announcement number CN207888857U) for a rapid prototyping device for autoclaved fly ash aerated concrete blocks, which "includes: a control box, a hydraulic pump, oil pipes, a hydraulic device, a machine body, a mold lifting shaft, a hydraulic base, a top mold, a bottom mold, a mold support frame, a lifting motor, and a base. The control box is fixed to the machine body assembly and is welded." It is evident that the cited patent document presents a problem with the difficulty in removing the concrete blocks from the bottom formwork. Utility Model Content
[0004] The purpose of this invention is to provide a molding device for autoclaved aerated concrete blocks to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding device for autoclaved aerated concrete blocks, comprising a molding body, a bottom mold for adding concrete block mortar is installed on the top surface of the molding body, a horizontal plate is provided in the inner cavity of the molding body, two connecting plates are symmetrically connected to the top surface of the horizontal plate, the free ends of the two connecting plates pass through the molding body and the bottom mold and are connected to a top plate, two vertical rods are symmetrically connected to the top surface of the horizontal plate, two through holes for the vertical rods to pass through are symmetrically opened on the top surface of the molding body, two springs are connected to the top surface of the horizontal plate, the free ends of the two springs are connected to the inner top surface of the molding body, a limiting plate is connected to the inner bottom surface of the molding body, and the horizontal plate is slidably sleeved on the periphery of the limiting plate.
[0006] Preferably, the top surface of the molding machine body is symmetrically connected to two cylinders through which vertical rods pass, and two electric push rods are installed on both sides of the molding machine body via a base plate.
[0007] Preferably, the moving parts of the two electric push rods are connected to a rectangular plate, and a top mold is installed on the bottom surface of the rectangular plate.
[0008] Preferably, the rectangular plate is slidably sleeved on the periphery of the two cylinders, and the top ends of the two vertical rods extend above the two cylinders and are connected to a circular block.
[0009] Preferably, a bracket is mounted on one side of the molding machine body, and a cylinder is mounted on one side of the bracket.
[0010] Preferably, the piston rod of the cylinder is connected to a pusher plate for pushing autoclaved aerated concrete blocks through a support bracket.
[0011] Preferably, a discharge plate for discharging autoclaved aerated concrete blocks is installed on the top surface of the molding body and on one side of the bottom mold.
[0012] Compared with the prior art, the technical effects and advantages of this utility model are as follows: The molding device for autoclaved aerated concrete blocks can move the top plate upward by moving the vertical rod upward in conjunction with the horizontal plate, thereby pushing the concrete blocks out of the bottom mold for demolding.
[0013] By activating two electric actuators, power can be provided to move the rectangular plate. In conjunction with the circular block, the vertical rod can be moved, thereby realizing the automatic movement of the top plate and demolding of the concrete blocks. Compared with the existing devices for forming concrete blocks, this device can demold the concrete blocks, making it convenient for personnel to remove them from the bottom mold.
[0014] By activating the cylinder, power can be provided to move the push plate, thereby moving the formed concrete blocks to the discharge plate. Attached Figure Description
[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side sectional view of the molding machine body of this utility model; Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4This is a schematic diagram of the push plate and the arrangement plate of this utility model.
[0017] Explanation of reference numerals in the attached figures: In the diagram: 1. Molding body; 2. Bottom mold; 3. Horizontal plate; 4. Connecting plate; 5. Top plate; 6. Vertical rod; 7. Through hole; 8. Spring; 9. Limiting plate; 10. Cylinder; 11. Electric push rod; 12. Rectangular plate; 13. Top mold; 14. Round block; 15. Support; 16. Cylinder; 17. Push plate; 18. Arrangement plate. Detailed Implementation
[0018] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.
[0019] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.
[0020] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.
[0021] like Figures 1 to 4 The apparatus shown is a molding device for autoclaved aerated concrete (AAC) blocks, comprising a molding body 1. A bottom mold 2 for adding concrete block mortar is installed on the top surface of the molding body 1. Two electric push rods 11 are installed on both sides of the molding body 1 via a bottom plate. The moving parts of the two electric push rods 11 are connected to a rectangular plate 12. A top mold 13 is installed on the bottom surface of the rectangular plate 12. The AAC block mortar is added into the bottom mold 2, and then the two electric push rods 11 are activated simultaneously to move the rectangular plate 12 downward, so that the top mold 13 can extrude and mold the concrete block mortar in the bottom mold 2.
[0022] The inner cavity of the molding machine body 1 is provided with a horizontal plate 3. Two connecting plates 4 are symmetrically connected to the top surface of the horizontal plate 3. The free ends of the two connecting plates 4 pass through the molding machine body 1 and the bottom mold 2, and are connected to a top plate 5. Two vertical rods 6 are symmetrically connected to the top surface of the horizontal plate 3. Two through holes 7 are symmetrically opened on the top surface of the molding machine body 1 for the vertical rods 6 to pass through. Two springs 8 are connected to the top surface of the horizontal plate 3. The free ends of the two springs 8 are connected to the inner top surface of the molding machine body 1. By moving the two vertical rods 6 upwards, the horizontal plate 3 and the connecting plates 4 can be moved upwards. When moving upwards, the spring 8 is compressed. The spring 8 deforms under pressure, which buffers the force and achieves a damping effect. When the connecting plate 4 moves upwards, it can drive the top plate 5 to move upwards, which allows the top plate 5 to push the formed concrete block upwards. This allows the concrete block to be pushed to the outside of the bottom mold 2, realizing demolding and making it convenient for personnel to pick up. This avoids the difficulty for personnel to remove the formed concrete block from the bottom mold 2, which would require external force to pry it and easily cause breakage. This improves the efficiency of autoclaved aerated concrete block forming.
[0023] The inner bottom surface of the molding body 1 is connected to a limiting plate 9. The horizontal plate 3 is slidably sleeved on the periphery of the limiting plate 9. When the horizontal plate 3 moves, it will move on the periphery of the limiting plate 9, which can limit the movement trajectory of the horizontal plate 3 and prevent deviation.
[0024] The top surface of the molding body 1 is symmetrically connected to two cylinders 10 through which vertical rods 6 pass. A rectangular plate 12 is slidably fitted around the two cylinders 10. The top ends of the two vertical rods 6 extend above the two cylinders 10 and are connected to round blocks 14. The rectangular plate 12 is located below the two round blocks 14. After molding is completed, two electric push rods 11 are activated simultaneously, which can drive the rectangular plate 12 and the top mold 13 to move upward, so that the top surface of the rectangular plate 12 can abut against the two round blocks 14. At this time, if it continues to move upward, the two round blocks can drive the two vertical rods 6 to move upward, and then the horizontal plate 3, the connecting plate 4 and the top plate 5 move upward to demold the concrete block, realizing automatic demolding.
[0025] A support 15 is installed on one side of the molding machine body 1, and a cylinder 16 is installed on the other side of the support 15. The piston rod of the cylinder 16 passes through the support 15 and is connected to a push plate 17 for pushing autoclaved aerated concrete blocks. A discharge plate 18 for discharging autoclaved aerated concrete blocks is installed on the top surface of the molding machine body 1 and on one side of the bottom mold 2. A conveyor belt (not shown) is connected to the outside of the discharge plate 18. After the push plate 17 pushes the concrete blocks to move above the bottom mold 2, the top surface of the top plate 5 is aligned with the horizontal position of one side of the discharge plate 18, or slightly higher than the discharge plate 18. Then the cylinder 16 is turned on to drive the push plate 17 to move, thus pushing the concrete blocks so that they can move to the surface of the discharge plate 18 and move along the surface of the discharge plate 18, and then fall onto the external conveyor belt for transport.
[0026] Working principle: The autoclaved aerated concrete (AAC) block forming device adds the AAC block slurry into the bottom mold 2, then simultaneously activates two electric push rods 11, moving the rectangular plate 12 downwards so that the top mold 13 can extrude and form the concrete block slurry in the bottom mold 2. After forming, the two electric push rods 11 are activated again to move the rectangular plate 12 and the top mold 13 upwards, so that the top surface of the rectangular plate 12 can abut against the two circular blocks 14. Continuing to move upwards then moves the two vertical rods 6 upwards, thereby moving the horizontal plate 3 and the connecting plate 4 upwards, allowing the connecting plate to move upwards. The connecting plate 4 can drive the top plate 5 to move upward, allowing the top plate 5 to push the formed concrete blocks upward, so that the concrete blocks can be pushed to the outside of the bottom mold 2. Then, the cylinder 16 is activated, which drives the push plate 17 to move, thus pushing the concrete blocks to the surface of the shelf 18, and moving along the surface of the shelf 18, and then falling onto the external conveyor belt for transportation. This avoids the difficulty for personnel to remove the formed concrete blocks from the bottom mold 2, which requires external force to pry and is prone to breakage, thus improving the efficiency of autoclaved aerated concrete block forming.
[0027] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A molding device for autoclaved aerated concrete blocks, comprising a molding machine body (1), characterized in that: The top surface of the molding machine body (1) is equipped with a bottom mold (2) for adding concrete block mortar. The inner cavity of the molding machine body (1) is provided with a horizontal plate (3). The top surface of the horizontal plate (3) is symmetrically connected with two connecting plates (4). The free ends of the two connecting plates (4) pass through the molding machine body (1) and the bottom mold (2) and are connected to a top plate (5). The top surface of the horizontal plate (3) is symmetrically connected with two vertical rods (6). The top surface of the molding machine body (1) is symmetrically opened with two through holes (7) for the vertical rods (6) to pass through. The top surface of the horizontal plate (3) is connected with two springs (8). The free ends of the two springs (8) are connected to the inner top surface of the molding machine body (1). The inner bottom surface of the molding machine body (1) is connected with a limiting plate (9). The horizontal plate (3) is slidably sleeved on the periphery of the limiting plate (9).
2. The molding device for autoclaved aerated concrete blocks according to claim 1, characterized in that: The top surface of the molding machine body (1) is symmetrically connected to two cylinders (10) through which vertical rods (6) pass, and two electric push rods (11) are installed on both sides of the molding machine body (1) through the bottom plate.
3. The molding device for autoclaved aerated concrete blocks according to claim 2, characterized in that: The moving parts of the two electric push rods (11) are connected to a rectangular plate (12), and a top mold (13) is installed on the bottom surface of the rectangular plate (12).
4. The molding device for autoclaved aerated concrete blocks according to claim 3, characterized in that: The rectangular plate (12) is slidably sleeved on the periphery of the two cylinders (10), and the top ends of the two vertical rods (6) extend above the two cylinders (10) and are connected to a circular block (14).
5. The molding device for autoclaved aerated concrete blocks according to claim 1, characterized in that: A bracket (15) is installed on one side of the molding body (1), and a cylinder (16) is installed on one side of the bracket (15).
6. The molding apparatus for autoclaved aerated concrete blocks according to claim 5, characterized in that: The piston rod of the cylinder (16) passes through the bracket (15) and is connected to a push plate (17) for pushing autoclaved aerated concrete blocks.
7. The molding device for autoclaved aerated concrete blocks according to claim 1, characterized in that: The top surface of the molding body (1) and one side of the bottom mold (2) is equipped with a discharge plate (18) for discharging autoclaved aerated concrete blocks.