An autoclaved aerated concrete block forming device

Abstract

The application discloses a steam pressure aerated concrete block forming device, which comprises a forming die, a first rotating shaft, a second rotating shaft, a transmission sleeve and a power assembly, and the forming die comprises an outer shell and a pressing plate; a spiral thread is arranged on the outer circumferential surface of the first rotating shaft; one end of the second rotating shaft is connected with the outer shell, and the other end is sleeved with the first rotating shaft; the transmission sleeve is slidably sleeved with the second rotating shaft, and a transmission key is arranged between the transmission sleeve and the second rotating shaft; and the power assembly is drivingly connected with the transmission sleeve. According to the steam pressure aerated concrete block forming device, the following technical effects are achieved: in the process of pouring and pre-curing, the outer shell is driven to rotate and move horizontally by the second rotating shaft at the beginning, so that the material in the outer shell is pressed and shaped, and the rotation of the outer shell is kept in the subsequent process, so that the material in the outer shell is prevented from sinking in one direction due to gravity, the uniformity of the material is improved, and the quality of the finished block is improved.

Description

Technical Field

[0001] This invention relates to the field of autoclaved aerated concrete (AAC) block processing technology, and more specifically to an AAC block forming device. Background Technology

[0002] Autoclaved aerated concrete (AAC) blocks are porous concrete products made primarily from fly ash, lime, cement, gypsum, and slag, 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. During pouring, the mixed materials are poured into molds and then extruded to increase density, reduce voids, and achieve the desired shape. The molds are then pre-cured together. However, in current pouring processes, the molds are fixed, and the materials are poured in before extrusion. This extrusion and shaping process takes time, during which the materials may settle due to gravity, affecting the uniformity of the materials and ultimately the final quality of the AAC blocks. Summary of the Invention

[0003] The technical problem solved by this invention is: how to alleviate the settling phenomenon of materials during the pouring process, which leads to a decrease in the quality of the final product.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] An autoclaved aerated concrete (AAC) block forming apparatus includes:

[0006] A molding die, comprising an outer shell and a pressure plate, wherein the outer shell has a feeding port, the pressure plate is mounted on a fixed base, and the outer ring of the pressure plate slides in fit with the inner wall of the outer shell;

[0007] A first rotating shaft, one end of which is mounted on a first support base, and a spiral pattern is provided on the outer circumference of the first rotating shaft;

[0008] The second rotating shaft has one end connected to the outer shell and the other end sleeved on the outside of the first rotating shaft. The inner wall of the second rotating shaft near the first rotating shaft is provided with a transmission structure that matches the spiral pattern.

[0009] A transmission sleeve is slidably sleeved on the outside of the second rotating shaft, and a transmission key is provided between the two. The transmission sleeve is rotatably mounted on the second support seat.

[0010] A power assembly that drives the transmission sleeve.

[0011] According to an embodiment of the present invention, an autoclaved aerated concrete block forming device has at least the following technical effects: during the pouring and pre-curing process, at the beginning, the outer shell is rotated and moved laterally by the second rotating shaft to apply pressure to the material inside the outer shell for shaping. In the subsequent process, the rotation of the outer shell is maintained to prevent the material inside the outer shell from settling in one direction due to gravity, which would reduce the uniformity of the material and thus affect the quality of the finished blocks.

[0012] As a further aspect of the present invention: the pressure plate is fixedly connected to the fixed base, and the outer ring of the pressure plate is circular.

[0013] As a further aspect of the present invention: the pressure plate is rotatably mounted on the fixed base, and the outer ring of the pressure plate is square.

[0014] As a further aspect of the present invention: a connector is fixedly disposed on the outer casing, the second rotating shaft is rotatably connected to the connector, and a locking element for locking the second rotating shaft is disposed on the side of the connector. This allows for adjustment of the relative position between the outer casing and the second rotating shaft when necessary, which is more advantageous in use.

[0015] As a further aspect of the present invention: the power assembly includes a power source, a drive shaft is driven and connected to the power source, a first drive wheel is fixedly disposed on the drive shaft, a first driven wheel is fixedly disposed on the transmission sleeve, and the first drive wheel and the first driven wheel are connected in a transmission connection.

[0016] As a further aspect of the present invention: the first rotating shaft includes a first shaft and a second shaft. The first shaft is rotatably mounted on a first support, and the second shaft is mounted on a third support. A torque limiter is provided between the first shaft and the second shaft. A second driven wheel is fixedly mounted on the first shaft, and a second driving wheel is fixedly mounted on the driving shaft. The second driven wheel and the second driving wheel are connected by a transmission, and the transmission ratio between the first driving wheel and the first driven wheel is not equal to the transmission ratio between the second driven wheel and the second driving wheel. This allows the lateral movement of the outer shell to stop when the pressure inside the outer shell reaches a specified value, keeping the material inside the outer shell under a specified pressure. Pre-curing under this state is beneficial for improving the strength of the final block product.

[0017] As a further aspect of the present invention: both the first driving wheel and the second driving wheel are gear structures.

[0018] As a further aspect of the present invention, the diameter of the first driving wheel is larger than the diameter of the second driving wheel.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0023] Figure 3 This is the present invention. Figure 2 A partially enlarged structural diagram of the torque limiter at point A.

[0024] In the diagram: 100, outer casing; 101, pressure plate; 102, first rotating shaft; 1021, first shaft; 1022, second shaft; 103, second rotating shaft; 104, transmission sleeve; 105, connector; 106, power source; 107, drive shaft; 108, first drive wheel; 109, first driven wheel; 110, second drive wheel; 111, second driven wheel; 112, torque limiter. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] Please see Figure 1 As shown, the present invention is a molding device for autoclaved aerated concrete blocks, comprising: a molding mold, a first rotating shaft 102, a second rotating shaft 103, a transmission sleeve 104, and a power assembly. The power assembly provides power to drive the device.

[0029] The molding die includes an outer shell 100 and a pressure plate 101. The outer shell 100 has a feeding port for filling with material, and a sealing structure is provided at the feeding port to close it after filling. The outer ring of the pressure plate 101 slides against the inner wall of the outer shell 100, and the pressure plate 101 is mounted on a fixed base. The molding die has a molding chamber for extruding and molding after material is filled. The shape of the molding die is not limited. For example, the internal space of the outer shell 100 can be circular, in which case the outer ring of the pressure plate 101 is circular and matches the inner wall of the outer shell 100, and the pressure plate 101 can be fixedly connected to the fixed base. Alternatively, the internal space of the outer shell 100 can be square, and the outer ring of the pressure plate 101 is square to match the inner wall of the outer shell 100. In this case, the pressure plate 101 is rotatably mounted on the fixed base, allowing it to rotate with the outer shell 100 and slide relative to it.

[0030] One end of the first rotating shaft 102 is mounted on the first support base, and a spiral pattern is provided on the outer circumference of the first rotating shaft 102. The spiral pattern can be a threaded structure or a spiral groove structure around the circumference of the first rotating shaft 102.

[0031] One end of the second rotating shaft 103 is connected to the outer shell 100, and the other end is sleeved on the outside of the first rotating shaft 102. The inner wall of the second rotating shaft 103 near the first rotating shaft 102 is provided with a transmission structure that matches the spiral pattern. Specifically, if the spiral pattern is a threaded structure, the transmission structure is a matching spiral, and the end of the second rotating shaft 103 away from the outer shell 100 is threaded onto the first rotating shaft 102. If the spiral pattern is a spiral groove structure, the transmission structure can be a protrusion structure, and the protrusion structure and the groove structure slide together.

[0032] The transmission sleeve 104 is slidably sleeved on the outside of the second rotating shaft 103, and a transmission key is provided between the two. The transmission sleeve 104 is rotatably mounted on the second support seat; that is, the second rotating shaft 103 is located inside the transmission sleeve 104 and can slide along the axis of the transmission sleeve 104. When the transmission sleeve 104 rotates, the second rotating shaft 103 rotates together with the transmission sleeve 104. Furthermore, the outer contour of the second rotating shaft 103 can be set to a non-circular shape, such as a spline structure or a square structure. The shape of the inner ring of the transmission sleeve 104 matches the shape of the second rotating shaft 103. In this way, while the second rotating shaft 103 can slide inside the transmission sleeve 104, the transmission sleeve 104 can drive the second rotating shaft 103 to rotate.

[0033] The power assembly drives the transmission sleeve 104. Specifically, the power assembly may include a fixedly mounted power source 106, a drive shaft 107 driven by the power source 106, a first drive wheel 108 fixedly mounted on the drive shaft 107, and a first driven wheel 109 fixedly mounted on the transmission sleeve 104. The first drive wheel 108 and the first driven wheel 109 are connected in a transmission manner. Specifically, the method of transmission connection between the first drive wheel 108 and the first driven wheel 109 is not limited; belt drive, chain drive, or gear drive can be used.

[0034] In use, the device is initially positioned with the outer casing 100 stationary and the feeding port facing upwards. The pressure plate 101 is located at the opening of the outer casing 100, forming a unified space with the outer casing 100 to accommodate materials. A fixed amount of material is added into the outer casing 100 through the feeding port, and then the feeding port is closed. The power assembly is then activated, driving the transmission sleeve 104 to rotate. The transmission sleeve 104 drives the second rotating shaft 103 to rotate, causing the outer casing 100 to rotate as well. During the rotation of the second rotating shaft 103 relative to the first rotating shaft 102, the spiral action causes the second rotating shaft 103 to move laterally, thus moving the outer casing 100 towards the pressure plate 101. The material moves in the direction of 1, that is, while the outer shell 100 rotates, it moves towards the pressure plate 101, thereby causing the pressure plate 101 to apply pressure to the material in the outer shell 100. The length of the spiral corresponds to the stroke of the second rotating shaft 103 (outer shell 100). When the end of the second rotating shaft 103 disengages from the spiral, that is, when the end of the second rotating shaft 103 reaches the end of the spiral (if it is a spiral groove, an annular groove can be provided at the end as the termination end), at this time, the second rotating shaft 103 does not move laterally during the rotation of the outer shell 100, and the pressure applied by the pressure plate 101 to the material in the outer shell 100 reaches the set value, thereby causing the material in the outer shell 100 to be formed. Then, pre-curing treatment can be carried out until the block is shaped and has a certain strength. During this process, the outer shell 100 and the material inside it are always in a rotating state to avoid unidirectional settling of the material under the influence of gravity field before it is shaped, which would eventually lead to a decrease in material uniformity. After the treatment is completed, the power component rotates in the opposite direction, so that the outer shell 100 moves away from the pressure plate 101, and finally the two separate. Then, the mold is disassembled and the block is taken out.

[0035] Please see Figure 1 In one embodiment of the present invention, a connector 105 is fixedly disposed on the outer casing 100, and a second rotating shaft 103 is rotatably connected to the connector 105. A locking element for locking the second rotating shaft 103 is provided on the side of the connector 105. In use, removing the locking element allows the outer casing 100 to rotate relative to the second rotating shaft 103, thereby adjusting the position of the feeding port on the outer casing 100. The locking element then secures the port, making it more convenient to use. Specifically, the locking element can be a pin, bolt, or screw.

[0036] Please see Figure 2In one embodiment of the present invention, due to the limitation on the length of the spiral, the second rotating shaft 103 is difficult to move smoothly in the opposite direction when the power component is running in reverse. Therefore, based on the above embodiment, the first rotating shaft 102 includes a first shaft 1021 and a second shaft 1022. The first shaft 1021 is rotatably mounted on a first support seat, and the second shaft 1022 is mounted on a third support seat. The spiral is mounted on the second shaft 1022. A torque limiter 112 is provided between the first shaft 1021 and the second shaft 1022. A second driven wheel 111 is fixedly mounted on the first shaft 1021, and a second driving wheel 110 is fixedly mounted on the driving shaft 107. The second driven wheel 111 and the second driving wheel 110 are connected by transmission, and the transmission ratio between the first driving wheel 108 and the first driven wheel 109 is not equal to the transmission ratio between the second driven wheel 111 and the second driving wheel 110. Initially, the first shaft 1021 can drive the second shaft 1022 to rotate together via the torque limiter 112. Due to the unequal transmission ratios at the first drive wheel 108 and the second drive wheel 110, a speed difference exists between the second shaft 103 and the second shaft 1022 of the first shaft 102. This differential motion causes the second shaft 103 to rotate while simultaneously moving laterally towards the outer casing 100. When the outer casing 100 reaches a critical position, the pressure of the pressure plate 101 on the material inside the outer casing 100 reaches a critical value, i.e., the resistance to the lateral movement of the outer casing 100 and the... With the torque limiter 112 set consistently, as the second shaft 103 continues to rotate, the resistance to its lateral movement exceeds the torque limiter 112's set value. Consequently, the first shaft 1021 cannot drive the second shaft 1022 to rotate synchronously via the torque limiter 112. Instead, the second shaft 103 drives the second shaft 1022 to rotate together via its spiral grooves. This means the outer casing 100 remains in this position and continues to rotate, while the pressure plate 101 maintains a certain pressure, allowing for better material shaping and reducing the impact of gravity. Preferably, both the first drive wheel 108 and the second drive wheel 110 are gear structures. Stable transmission is achieved through gear meshing, preventing slippage.Furthermore, based on the above embodiment, the diameter of the first driving wheel 108 is larger than the diameter of the second driving wheel 110. In this case, after transmission, the first driven wheel 109 accelerates while the second driving wheel 110 decelerates, resulting in a speed difference between the second rotating shaft 103 and the first rotating shaft 102. This allows the outer casing 100 to achieve a higher rotational speed while reducing the overall power of the device, thus maintaining the uniformity of the material. If the rotational speed of the entire device is too high, centrifugal force may affect the uniformity of the material. Therefore, the first driving wheel 108 is set to be smaller than the second driving wheel 110 so that the outer casing 100 is at a lower speed end, thereby ensuring that the speed of the outer casing 100 is within a certain range. This avoids sedimentation caused by gravity and prevents centrifugal force from affecting the uniformity of the material, which in turn affects the quality of the final product.

[0037] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the scope of the claims.

Claims

1. A device for forming autoclaved aerated concrete blocks, characterized in that, include: A molding die, the molding die including an outer shell (100) and a pressure plate (101), the outer shell (100) having a feeding port, the pressure plate (101) being mounted on a fixed base, and the outer ring of the pressure plate (101) slidingly engaging with the inner wall of the outer shell (100); A first rotating shaft (102) is provided at one end on a first support base, and a spiral pattern is provided on the outer circular surface of the first rotating shaft (102). The second rotating shaft (103) has one end connected to the outer shell (100) and the other end sleeved on the outside of the first rotating shaft (102). The inner wall of the second rotating shaft (103) near the first rotating shaft (102) is provided with a transmission structure that matches the spiral pattern. A transmission sleeve (104) is slidably sleeved on the outside of the second rotating shaft (103), and a transmission key is provided between the two. The transmission sleeve (104) is rotatably mounted on the second support seat. A power assembly for driving the transmission sleeve (104) to rotate.

2. The autoclaved aerated concrete block forming device according to claim 1, characterized in that, The pressure plate (101) is fixedly connected to the fixed base, and the outer ring of the pressure plate (101) is circular.

3. The autoclaved aerated concrete block forming device according to claim 1, characterized in that, The pressure plate (101) is rotatably mounted on the fixed base, and the outer ring of the pressure plate (101) is square.

4. The autoclaved aerated concrete block forming device according to claim 1, characterized in that, A connector (105) is fixedly provided on the outer shell (100), the second rotating shaft (103) is rotatably connected to the connector (105), and a locking member for locking the second rotating shaft (103) is provided on the side of the connector (105).

5. An autoclaved aerated concrete block forming device according to any one of claims 1 to 4, characterized in that, The power assembly includes a power source (106), a drive shaft (107) is driven and connected to the power source (106), a first drive wheel (108) is fixedly mounted on the drive shaft (107), and a first driven wheel (109) is fixedly mounted on the transmission sleeve (104). The first drive wheel (108) and the first driven wheel (109) are connected in a transmission connection.

6. The autoclaved aerated concrete block forming device according to claim 5, characterized in that, The first rotating shaft (102) includes a first shaft (1021) and a second shaft (1022). The first shaft (1021) is rotatably mounted on a first support seat, and the second shaft (1022) is mounted on a third support seat. A torque limiter (112) is provided between the first shaft (1021) and the second shaft (1022). A second driven wheel (111) is fixedly mounted on the first shaft (1021), and a second driving wheel (110) is fixedly mounted on the driving shaft (107). The second driven wheel (111) and the second driving wheel (110) are connected by transmission. The transmission ratio between the first driving wheel (108) and the first driven wheel (109) is not equal to the transmission ratio between the second driven wheel (111) and the second driving wheel (110).

7. The autoclaved aerated concrete block forming device according to claim 6, characterized in that, Both the first drive wheel (108) and the second drive wheel (110) are gear structures.

8. The autoclaved aerated concrete block forming device according to claim 7, characterized in that, The diameter of the first drive wheel (108) is larger than the diameter of the second drive wheel (110).

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