Forming mold for foamed thermal insulation ceramic plates, and forming method

Abstract

A forming mold for foamed thermal insulation ceramic plates, and a forming method for using the mold to prepare a foamed thermal insulation ceramic plate. The forming mold for foamed thermal insulation ceramic plates comprises: a base plate (4), wherein two symmetrically arranged sliding portions (16) are fixedly mounted on the base plate (4), a side plate (6) that can slide vertically is mounted on the upper end of each sliding portion (16), an extension plate (61) is fixedly mounted on the outer side of each side plate (6), and a spring (10) is fixedly mounted between each extension plate (61) and the base plate (4); end plates (15), which are located on the front and rear sides of the base plate (4); magnetic attraction blocks (11), which are attracted to the edges at the upper ends of the sliding portions (16); upper side plates (12), which are inserted into the upper ends of the side plates (6); an upper plate (14), which can drive, when being pressed, the upper side plates (12) and the side plates (6) to move downward together; and a limiting plate (7), the bottom of which is rotatably mounted on the base plate (4). During the forming of a foamed thermal insulation ceramic plate to be prepared, the heat transfer efficiency inside the foamed thermal insulation ceramic plate can be improved, thereby ensuring that the foamed thermal insulation ceramic plate expands evenly when being heated, and thus reducing the phenomena of cracking and spalling.

Description

A molding die and molding method for foamed thermal insulation ceramic panels Technical Field

[0001] This invention relates to the field of ceramic insulation boards, specifically to a foamed insulation ceramic board, a foamed insulation ceramic board molding die, and a molding method. Background Technology

[0002] Foamed ceramic insulation panels are primarily made from materials with high shrinkage rates. Raw materials include clay tailings, quartz sand, feldspar, calcium carbonate, perlite, bentonite, and other granules. They possess advantages such as lightweight, heat insulation, fire resistance, and environmental friendliness, making them a new type of wall material that has entered the market in recent years. The manufacturing process involves pulping, foaming, drying, and firing. Foamed ceramic insulation panels are widely used for exterior wall insulation, firebreaks, cast-in-place self-insulating and cooling walls, and non-load-bearing interior walls. Technical issues

[0003] Because foamed ceramic panels are mainly made of materials with high shrinkage rates, and foaming is performed to reduce the overall weight of the panel, these characteristics dictate that the material will inevitably shrink significantly during heating. When the panel material is heated, due to the porous nature of the material and its relatively slow heat conduction rate, the expansion rate of the foamed ceramic panel varies, resulting in different stresses in different areas (the expansion rate is faster in areas with higher temperatures, generating greater stress). As the stress continues to increase, it eventually exceeds the material's capacity, leading to cracking of the panel and even fragmentation. Technical solutions

[0004] The purpose of this invention is to provide a foamed thermal insulation ceramic board, a mold for forming the foamed thermal insulation ceramic board, and a forming method, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a foamed thermal insulation ceramic board, comprising:

[0006] The plate body has a heat-conducting mesh embedded inside it. The heat-conducting mesh is set close to the heated surface of the plate body. When the plate body is heated, the heat-conducting mesh can transfer heat inside the plate body.

[0007] Preferably, the heat-conducting mesh is provided in two layers inside the plate, one layer is close to one side of the plate, and the other layer is close to the other side of the plate;

[0008] The connecting mesh is fixedly connected to the two heat-conducting meshes respectively and is located in the middle of the plate.

[0009] Preferably, the connecting mesh is placed at an angle inside the plate.

[0010] A molding die for forming foamed thermal insulation ceramic panels, used to form the aforementioned foamed thermal insulation ceramic panels, comprising:

[0011] The base plate has two symmetrically arranged sliding parts fixedly installed on it. The upper end of the sliding parts is equipped with a side plate that can slide up and down. An extension plate is fixedly installed on the outer side of the side plate. A spring is fixedly installed between the extension plate and the base plate. The spring is used to provide an upward elastic force to the extension plate. The upper edge of the two sliding parts is used to place a heat-conducting mesh.

[0012] End plates are located on the front and rear sides of the base plate. The front end plate is connected to the base plate by bolts, and the rear end plate is fixedly connected to the rear side of the base plate.

[0013] The magnetic block is attracted to the upper edge of the sliding part and is used to fix the heat-conducting mesh located at the bottom.

[0014] The upper side panel is inserted into the upper end of the side panel to provide space for the foaming of the foamed thermal insulation ceramic panel.

[0015] The upper plate has its lower side in contact with the top of the upper side plate. When under pressure, the upper plate can move downwards along with the upper side plate and the side plate.

[0016] The limiting plate is rotated and mounted on the base plate. After the upper plate moves downward, it limits the upper plate, forming a space for the foamed thermal insulation ceramic board to be poured.

[0017] Preferably, it also includes an inner panel, which is fixedly installed at the bottom of the upper panel, and the distance between the two is the same as the height of the upper side panel;

[0018] The raised strip is fixedly installed on the upper end of the side panel, and a slot matching the raised strip is provided at the bottom of the upper side panel;

[0019] The bottom surface of the upper side plate and the upper end surface of the side plate are used to clamp the heat-conducting mesh located at the top.

[0020] Preferably, the limiting plate has an L-shaped structure, and the bottom of the limiting plate is rotatably mounted on both sides of the base plate via the first rotating shaft. Vertical plates are also fixedly mounted on both sides of the base plate. When the limiting plate is rotated to the vertical position, it abuts against the outer side of the vertical plate.

[0021] The limiting plate has an oblong hole, and a threaded rod is fixedly installed on the vertical plate. The threaded rod passes through the oblong hole and extends to the outside of the oblong hole. A threaded cap is rotatably installed at the end of the threaded rod located outside the oblong hole.

[0022] Rotating the threaded cap will cause the limiting plate to rotate towards the side closer to the vertical plate until the limiting plate and the vertical plate are in contact.

[0023] Preferably, the bottom of the limiting plate is rotatably mounted on both sides of the base plate via a first rotating shaft, and a torsion spring is installed on the outer side of the first rotating shaft;

[0024] Vertical plates are also fixedly installed on both sides of the base plate. When the limiting plate rotates to the vertical position, it abuts against the outer side of the vertical plate.

[0025] A telescopic plate is rotatably installed on one side wall of the limiting plate near the extension plate. The other end of the telescopic plate is rotatably connected to the extension plate. When the extension plate moves downward with the side plate, the telescopic plate gradually extends. The telescopic plate is used to rotate the limiting plate.

[0026] Multiple pads are placed between the upper end of the limiting plate and the upper plate.

[0027] Preferably, an upper fixing plate is fixedly provided on the upper end face of the upper plate, and a sliding cavity is formed between the upper fixing plate and the upper plate. Slide plates that can slide outward are symmetrically installed in the sliding cavity.

[0028] A transition plate is rotatably mounted on the upper side of the slide plate outside the sliding cavity. Multiple pads are placed above the transition plate. The upper end of the limiting plate is connected to the pads and the transition plate by bolts.

[0029] In a further embodiment, a damping hole is provided at the bottom of the sliding part.

[0030] A method for molding a foamed thermal insulation ceramic board, using the aforementioned mold for molding a foamed thermal insulation ceramic board, includes the following steps:

[0031] Install the side plate and the sliding part together, and place the lower heat-conducting mesh on the upper end of the sliding part, and fix it with magnetic blocks;

[0032] Place the upper heat-conducting mesh on the upper end of the side plate and press it in place with the upper side plate;

[0033] The upper plate is moved downward by a pressure device, which compresses the spring. When the upper plate moves downward, it will bring the side plate down along the sliding part, and the upper and lower heat-conducting meshes will move closer to each other.

[0034] When the slide reaches the preset height, the limiting plate is rotated to a vertical position, and the upper end of the limiting plate contacts the upper plate to limit the upper plate, thereby forming a casting cavity;

[0035] Remove the front end plate to open the mold, place the mold vertically, and then pour the slurry into the pouring cavity. After pouring, install the front end plate.

[0036] Rotate the limiting plate outwards, and the side plate and top plate will rise under the action of the spring to reserve space for foaming. Let it stand to foam. Beneficial effects

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] In this invention, a heat-conducting mesh is placed in the slurry during the molding of foamed thermal insulation ceramic panels. When the foamed thermal insulation ceramic panels are heated, the heated surface can transfer heat to the heat-conducting mesh. The heat-conducting mesh enables heat transfer within the foamed thermal insulation ceramic panels, improving the efficiency of heat transfer within the panels. This ensures that the foamed thermal insulation ceramic panels expand more evenly when heated, reducing the likelihood of cracking and bursting. Attached Figure Description

[0039] Figure 1 is a structural diagram of the foamed thermal insulation ceramic board of the present invention.

[0040] Figure 2 is a structural diagram of the foamed thermal insulation ceramic board of the present invention.

[0041] Figure 3 is a cross-sectional view of the foamed thermal insulation ceramic plate of the present invention;

[0042] Figure 4 is a curve showing the average temperature rise of the unexposed surface in the comparative group of the present invention.

[0043] Figure 5 is a curve showing the average temperature rise of the unexposed surface in the experimental group of the present invention.

[0044] Figure 6 is an exploded view of a molding die of the present invention;

[0045] Figure 7 is a structural cross-sectional view of the molding die of the present invention;

[0046] Figure 8 is a molding diagram of one structure of the molding die of the present invention;

[0047] Figure 9 is a cross-sectional view of another structure of the molding die of the present invention;

[0048] Figure 10 is a cross-sectional view of the third structure of the molding die of the present invention;

[0049] Figure 11 is a structural diagram of the third type of molding die of the present invention, in which the limiting plate rotates outward;

[0050] Figure 12 is a structural diagram of the third type of molding die of the present invention, in which the limiting plate rotates to the outermost position.

[0051] Figure 13 is an exploded view of the third structure of the molding die of the present invention;

[0052] Figure 14 is a structural diagram of the upper plate, inner plate and sliding plate of the present invention;

[0053] Figure 15 is a structural diagram of the side plate, extension plate, telescopic plate and limiting plate of the present invention;

[0054] Figure 16 is a structural diagram of the telescopic plate of the present invention;

[0055] Figure 17 is a schematic diagram of the movement of the upper plate, inner plate and side plate when the limiting plate of the present invention rotates.

[0056] In the diagram: 1. Plate; 2. Heat-conducting mesh; 3. Connecting mesh; 4. Base plate; 5. Vertical plate; 6. Side plate; 61. Extension plate; 7. Limiting plate; 8. Waist-shaped hole; 9. Threaded rod; 10. Spring; 11. Magnetic block; 12. Upper side plate; 13. Inner plate; 14. Upper plate; 15. End plate; 16. Sliding part; 17. Damping hole; 18. Upper fixing plate; 19. Sliding plate; 20. Pad; 21. Transition plate; 22. Telescopic plate; 221. Sliding plate; 222. Outer plate; 23. Horizontal plate; 24. Air extraction pipe. The best embodiment of the present invention

[0057] Type the description paragraph of the best embodiment of the invention here. Embodiments of the present invention

[0058] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.

[0059] Please refer to Figures 1-3. This embodiment provides a foamed thermal insulation ceramic board, including a foamed board body 1. A heat-conducting mesh 2 is pre-embedded inside the board body 1. The heat-conducting mesh 2 is located near the heated surface of the board body 1. The heat-conducting mesh 2 is preferably a mesh structure made of metal, which has good thermal conductivity. In this embodiment, the heat-conducting mesh 2 is made of 310S stainless steel wire mesh, which can withstand a maximum temperature of 1250 degrees Celsius and can withstand high-temperature calcination of 1000-1200 degrees Celsius together with the foamed thermal insulation ceramic board.

[0060] When panel 1 is installed on the outside of the wall as an insulation board, the thickness of the foam layer of panel 1 is usually 1.7cm. The distance between the heat-conducting mesh 2 and the heated surface of panel 1 is within 0.5-1cm. The heated surface of panel 1 faces outward to withstand sunlight. When the heated surface is exposed to sunlight and its temperature rises, the temperature is directly transferred to the heat-conducting mesh 2. Through the heat conduction of the heat-conducting mesh 2, the temperature can be transferred more evenly inside panel 1, ensuring uniform heating of the entire panel 1. Furthermore, due to the porous structure inside panel 1, while ensuring uniform heat transfer, panel 1 also has good insulation properties.

[0061] When foamed ceramic insulation panels are used as non-load-bearing walls indoors, the thickness of panel 1 is typically selected from sizes such as 8cm, 10cm, 12cm, 15cm, 18cm, and 20cm. When panel 1 is thicker, to improve its thermal conductivity, two layers of heat-conducting mesh 2 are installed. Both layers are embedded inside panel 1. One heat-conducting mesh 2 is positioned close to one side of panel 1, at a distance of 0.5-2cm from that side, while the other heat-conducting mesh 2 is positioned close to the other side of panel 1, also at a distance of 0.5-2cm. A connecting mesh 3, made of the same material as the heat-conducting mesh 2, is installed between the two layers of heat-conducting mesh 2. The two ends of the connecting mesh 3 are fixedly connected to both layers of heat-conducting mesh, and the connecting mesh 3 is located in the middle of panel 1, as shown in Figure 2-3. The connecting mesh 3 is inclined, with an angle of 45° between it and the heat-conducting mesh 2.

[0062] When one side of the foamed ceramic insulation board is heated, the heat is transferred to the heat-conducting mesh 2. Under the heat transfer effect of the heat-conducting mesh 2, the heat is transferred along the heat-conducting mesh 2 and the connecting mesh 3 inside the board body 1, making the heating of the board body 1 more uniform. This ensures that the heating temperature of the entire board body 1 remains uniform, thereby ensuring that the rate of thermal expansion and deformation of the foamed ceramic insulation board remains almost the same, reducing the occurrence of cracking or even bursting of the board due to different thermal expansion rates.

[0063] The applicant selected the improved board material as the experimental group: the thicknesses were 8cm, 10cm and 12cm respectively, and the control group: the thicknesses were 8cm, 10cm and 12cm respectively. The control group used existing ordinary foamed ceramic insulation board. The production environment and conditions of the control group and the experimental group were kept similar.

[0064] Experimental procedure: The selected materials were installed on the experimental frame by splicing. The joints between adjacent wall panels were sealed and smoothed with mortar, and the thickness of the joints was kept consistent, about 10 mm. Thermocouples were set on the back of the panels to measure the temperature. The experimental standard was in accordance with GB / T9978.8—2008 "Test Method for Fire Resistance of Building Components".

[0065] Figure 4 shows the average temperature rise curve of the unexposed surface of the comparison board, and Figure 5 shows the average temperature rise curve of the unexposed surface of the experimental board. The comparison shows that, under the same time conditions, the temperature of the unexposed surface of the experimental board is slightly higher than that of the comparison board, but it still has a good heat insulation effect.

[0066] The fire resistance test results for the boards are as follows:

[0067] Control group:

[0068] 8cm thick comparison board: at 7 minutes and 11 seconds, cracks appeared on the unexposed side of the board; at 17 minutes and 3 seconds, a hole appeared on the unexposed side that a probe (with a diameter of 25mm) could pass through.

[0069] 10cm thick comparison board: At 7 minutes and 52 seconds, cracks appeared on the unexposed side of the board; at 21 minutes and 2 seconds, a hole appeared on the unexposed side that a probe (with a diameter of 25mm) could pass through.

[0070] 12cm thick comparison board: at 8 minutes and 51 seconds, cracks appeared on the unexposed side of the board; at 26 minutes and 44 seconds, a hole appeared on the unexposed side that a probe (with a diameter of 25mm) could pass through.

[0071] Experimental group:

[0072] 8cm thick comparison board: at 7 minutes and 32 seconds, cracks appeared on the unexposed side of the board; at 17 minutes and 56 seconds, a hole appeared on the unexposed side that a probe (with a diameter of 25mm) could pass through.

[0073] 10cm thick comparison board: at 8 minutes and 33 seconds, cracks appeared on the unexposed side of the board; at 24 minutes and 13 seconds, a hole appeared on the unexposed side that a probe (with a diameter of 25mm) could pass through.

[0074] 12cm thick comparison board: at 9 minutes and 24 seconds, cracks appeared on the unexposed side of the board; at 28 minutes and 13 seconds, a hole appeared on the unexposed side that a probe (with a diameter of 25mm) could pass through.

[0075] The above comparison shows that by setting up a metal heat-conducting mesh, the performance of the foamed thermal insulation ceramic board is significantly improved. Due to the heat conduction effect of the metal mesh, the heat on the heated surface of the foamed thermal insulation ceramic board can be better transferred inside the board through the heat-conducting mesh 2 and the connecting mesh 3. This makes the heating of the board more uniform. While maintaining good thermal insulation performance, it also reduces the occurrence of cracking caused by uneven heating and different expansion rates of the board.

[0076] Because foamed thermal insulation ceramic panels require foaming in a mold during manufacturing, and the foaming height is significantly higher than the height of the raw material during casting, how to embed the heat-conducting mesh 2 and connecting mesh 3 inside the foamed thermal insulation ceramic panel is a problem that needs to be considered. If the heat-conducting mesh 2 and connecting mesh 3 are directly poured into the mold during raw material casting, their positions in the raw material remain almost unchanged. However, since the foaming process occurs during the manufacturing of the foamed thermal insulation ceramic panel, and the foaming height is higher than the casting height, the positions of the heat-conducting mesh 2 and connecting mesh 3 will deviate, obviously differing from the designed positions. Therefore, this application also designs a mold specifically for molding the aforementioned foamed thermal insulation ceramic panel, which can better integrate the heat-conducting mesh 2 and connecting mesh 3 into the foamed thermal insulation ceramic panel according to the designed positions.

[0077] The specific design is as follows: As shown in Figures 6-8, it includes a base plate 4. In this embodiment, the base plate 4 is a cuboid plate structure. Two symmetrically distributed sliding parts 16 are fixedly installed on the base plate 4, as shown in Figure 6. The sliding parts 16 are cuboid cavity structures and are arranged perpendicularly to the base plate 4. End plates 15 are installed at the front and rear ends of the base plate 4. The rear end plate 15 is fixedly connected to the base plate 4 and the outer side of the sliding parts 16, and the front end plate 15 is connected to the base plate 4 and the outer side of the sliding parts 16 by bolts. The front end plate 15 can be removed from the base plate 4 and the sliding parts 16. It should be noted that the threaded holes for installing the end plates 15 on the sliding parts 16 do not penetrate the sidewall of the sliding parts 16, ensuring that the side plate 6 can slide unimpeded in the inner cavity of the sliding parts.

[0078] The upper and lower ends of the sliding part 16 are both open structures. A side plate 6 is installed in the sliding part 16, as shown in Figures 6-8. The bottom side of the side plate 6 is located in the cavity of the sliding part 16. The side plate 6 can slide up and down in the cavity of the sliding part 16, thereby adjusting the distance between the upper end surface of the side plate 6 and the bottom plate 4.

[0079] A rubber pad is fixedly installed on the bottom outer side of the side plate 6 and is in close contact with the cavity side wall of the sliding part 16. The rubber pad is squeezed in the cavity of the sliding part 16 and there is friction between it and the sliding part 16. Under the action of friction, when no external force is applied, the side plate 6 can stop at any position without sliding.

[0080] In this embodiment, the sliding part 16 is made of magnetic metal. The upper surfaces of the two sliding parts 16 are used to place the heat-conducting mesh 2. The edge of the heat-conducting mesh 2 is close to the side plate 6 but does not contact it. A magnetic block 11 is also provided at the upper edge of the sliding part 16. The magnetic block 11 can be attracted to the upper end of the sliding part 16 and provides a clamping force to the heat-conducting mesh 2, thus installing the heat-conducting mesh 2 together with the upper end of the sliding part 16. In this embodiment, the distance between the upper end of the sliding part 16 and the bottom plate 4 is the same as the distance between the heat-conducting mesh 2 and the heated surface.

[0081] Before pouring, the pouring height of the foamed thermal insulation ceramic board needs to be determined. The heat-conducting mesh 2 and the sliding part 16 are installed together, and the front end plate 15 is installed using bolts. This assembles a mold with an open top, into which the raw material can be poured. Then, it is left to stand and wait for foaming. The mold in this embodiment is only suitable for relatively thin foamed thermal insulation ceramic boards, such as those used as exterior wall insulation boards in buildings, with a thickness of less than 5cm. Furthermore, for relatively thin boards, only one layer of heat-conducting mesh 2 is needed to improve the performance of the foamed thermal insulation ceramic board.

[0082] For thicker foamed ceramic insulation boards (mostly over 5cm), the heat conduction effect is still poor if only one layer of heat-conducting mesh 2 is installed due to the thickness of the board. Therefore, a special mold is designed for thicker boards. The thicker foamed ceramic insulation board has two layers of heat-conducting mesh 2 and a connecting mesh 3. If the raw material is poured from the top, the direction of the falling material is perpendicular to the heat-conducting mesh 2. During pouring, the heat-conducting mesh 2 and the connecting mesh 3 will obstruct the falling material. In severe cases, due to the obstruction of the heat-conducting mesh 2 and the connecting mesh 3, a large gap will remain between the raw material and the heat-conducting mesh 2 and the connecting mesh 3, affecting the quality of the foamed ceramic insulation board.

[0083] In a further embodiment, an extension plate 61 is also fixedly installed on the outer side of the side plate 6, as shown in FIG6. The extension plate 61 is arranged parallel to the bottom plate 4. A spring 10 is installed between the extension plate 61 and the bottom plate 4. One end of the spring 10 is fixedly connected to the bottom of the extension plate 61, and the other end is fixedly connected to the upper end face of the bottom plate 4. The spring 10 provides an upward elastic force to the extension plate 61.

[0084] A removable and replaceable upper side plate 12 is also inserted into the upper end of side plate 6. A protruding strip is fixedly installed on the upper end of side plate 6, and a slot is provided at the bottom of upper side plate 12, which can be inserted into the outside of the protruding strip. This allows for the installation of upper side plate 12 and side plate 6. The upper side plate 12 and side plate 6 are used to place the upper heat-conducting mesh 2. In this embodiment, there is a large friction between the slot and the protruding strip. After the upper heat-conducting mesh 2 is placed on the upper end of side plate 6, upper side plate 12 is inserted into the outside of the protruding strip, and pressing upper side plate 12 applies significant pressure to the upper heat-conducting mesh 2. After the pressing pressure is released, due to the friction between the slot and the protruding strip, upper side plate 12 can maintain continuous pressure on heat-conducting mesh 2, thus ensuring that the upper heat-conducting mesh 2 is installed between upper side plate 12 and side plate 6. In this embodiment, the bottom of upper side plate 12 and side plate 6 can also be magnetically attached to clamp and install the upper heat-conducting mesh 2. For example, a magnetic strip is fixedly installed at the bottom of the upper side plate 12, and a metal block is fixedly installed at the upper edge of the side plate 6. The magnetic strip of the upper side plate 12 is attracted to the metal block of the side plate 6, clamping and installing the upper heat-conducting mesh 2. A foaming space for a foamed thermal insulation ceramic board with an open top is formed between the upper side plate 12, the side plate 6, and the bottom plate 4.

[0085] The upper surface of the base plate 4 serves as the bottom of the foaming space and is the bottom surface of the foamed thermal insulation ceramic plate. Therefore, the distance between the heat-conducting mesh 2 at the bottom and the base plate 4 is between 0.5-2cm. In this embodiment, it is preferably 1cm.

[0086] The position of the upper heat-conducting mesh 2 is determined based on the foaming height. Taking a 10cm thick board as an example: during the foaming process, the foamed surface will be uneven. Later, it is necessary to cut off the uneven surface of the board. The cutting height of the foamed board needs to be determined. This height is generally determined based on practical experience. In this embodiment, the cutting height is calculated as 0.5cm, that is, the foaming height of the board is 10.5cm. When determining the foaming height, it is only necessary to make the distance between the upper heat-conducting mesh 2 and the foaming height 1-2.5cm. In this embodiment, it is preferably 1.5cm. That is to say, after the spring 10 supports the upper side plate 12 and the side plate 6 and the upper heat-conducting mesh 2 is installed, the natural length of the spring 10 makes the distance between the upper heat-conducting mesh 2 and the foaming height 1.5cm.

[0087] An upper plate 14 is provided at the upper opening of the foaming space, as shown in Figure 1. The lower side of the upper plate 14 contacts the top of the upper side plate 12. When the upper plate 14 moves downward, it can move the upper side plate 12 and the side plate 6 downward together. A metal magnetic seat (not shown in the figure) is fixedly provided at the upper center of the upper plate 14. A support rod is fixedly installed at the lower corner of the upper plate 14. An inner plate 13 is fixedly installed at the bottom of the support rod. The distance between the bottom surface of the inner plate 13 and the bottom surface of the upper plate 14 is the same as the height of the upper side plate 12. The size of the inner plate 13 matches the upper opening of the foaming space.

[0088] As the upper plate 14 moves downwards along with the inner plate 13, the inner plate 13 gradually moves downwards within the foaming space. When the upper plate 14 is in contact with the upper end face of the upper side plate 12, the inner plate 13 comes into contact with and adheres to the upper heat-conducting mesh 2. After the upper plate 14 is in contact with the upper side plate 12, the upper plate 14 can continue to slide downwards along with the upper side plate 12 and the side plate 6 (the spring 10 is compressed during the downward sliding process) until it reaches the pouring height of the board, at which point the downward movement of the upper plate 14 can be stopped, as shown in Figure 6. The downward movement of the upper plate 14 can be achieved by manual downward pressing or by using a hydraulic press. Throughout the process, due to the elastic force of the spring 10, the upper plate 14 will also be subjected to an upward force.

[0089] Limiting plates 7 are also rotatably installed on both sides of the base plate 4, as shown in Figures 6-8. The limiting plate 7 is an inverted L-shaped structure. A first rotating shaft is fixedly installed at the bottom of the limiting plate 7. Shaft holes are opened on both sides of the base plate 4. The first rotating shaft is rotatably installed in the shaft holes. A torsion spring is installed on the outside of the first rotating shaft. One end of the torsion spring is fixedly connected to the limiting plate 7, and the other end of the torsion spring is fixedly connected to the base plate 4. The torsion spring provides an outward elastic force to the limiting plate 7.

[0090] In this embodiment, vertical plates 5 are also fixedly installed on both sides of the base plate 4. When the limiting plate 7 rotates to the vertical position, the limiting plate 7 can abut against the vertical plate 5, so that the limiting plate 7 can stop rotating when it reaches the vertical position. A horizontally arranged threaded rod 9 is fixedly installed in the middle of the vertical plate 5. A waist-shaped hole 8 is opened in the middle of the limiting plate 7. The threaded rod 9 passes through the waist-shaped hole 8 and is located on the outside of the waist-shaped hole 8. A threaded cap is rotatably installed at the end of the threaded rod 9 located on the outside of the waist-shaped hole 8. The threaded cap is larger than the width of the waist-shaped hole 8. When the threaded cap is rotated, the threaded cap rotates forward along the axial direction of the threaded rod 9, taking the limiting plate 7 to rotate closer to the vertical plate 5 until the limiting plate 7 and the vertical plate 5 are in contact. Then the threaded cap can be tightened to fix the limiting plate 7. At this time, the upper end of the limiting plate 7 will contact the upper surface of the upper plate 14, clamping or limiting the upper plate 14 to prevent it from moving upward under the elastic force of the spring 10, and keeping the height of the foamed cavity at the pouring height. In this embodiment, it should be noted that in the vertical state, the height of the inner side of the limiting plate 7 is the same as the pouring height of the foamed thermal insulation ceramic board.

[0091] As the upper plate 14 moves downward, the upper heat-conducting mesh 2 also moves downward and approaches the lower heat-conducting mesh 2. The connecting mesh 3 between the two heat-conducting meshes 2 is in a wave-like folded state, as shown in Figure 8.

[0092] Before pouring the raw material, the front end plate 15 is removed from the bottom plate 4 and the sliding part 16, and the upper plate 14 is pressed down. The upper plate 14, along with the inner plate 13, moves downward in the foaming space until the upper plate 14 and the upper side plate 12 are attached together. As the upper plate 14 continues to be pressed, the spring 10 is compressed, and the upper plate 14, along with the upper side plate 12 and the side plate 6, continues to move downward until the pouring height is reached. Then, the threaded cap is rotated, and the L-shaped limiting plate 7 is rotated to the side closer to the vertical plate 5 until it is rotated to a vertical position. The threaded cap is tightened to fix the position of the limiting plate 7. Then the pressing pressure can be removed, and the upper plate 14 maintains a constant pouring height under the limiting action of the limiting plate 7.

[0093] During casting, the assembled mold is flipped so that the front opening faces upwards, allowing the raw material to be poured into the mold through this opening. As the raw material falls into the mold, it descends vertically along the heat-conducting mesh 2 and the connecting mesh 3, preventing it from passing perpendicularly through the heat-conducting mesh 2. This reduces the obstruction to the movement of the raw material by the heat-conducting mesh 2 and the connecting mesh 3, resulting in a better casting effect. During casting, the heat-conducting mesh 2 at the bottom is embedded in the raw material, while the heat-conducting mesh 2 at the top, due to its contact with the inner plate 13, is positioned at the end face of the cast raw material. The connecting mesh 3 is also embedded in the raw material.

[0094] After the casting is completed, the disassembled end plate 15 can be installed together with the base plate 4 and the sliding part 16. The mold can then be placed horizontally, and the base plate 4 can be placed on the ground or a workbench. Then, the threaded cap is rotated in the opposite direction, and the limiting plate 7 rotates outward under the action of the torsion spring. At the same time, the side plate 6 moves upward under the elastic force of the spring 10, and moves upward together with the upper side plate 12 and the upper plate 14.

[0095] As the side plate 6, upper side plate 12 and upper plate 14 move upward, the upper heat-conducting mesh 2 separates from the upper end face of the cast molding material and moves upward. At the same time, the heat-conducting mesh 2 will move upward with the upper side of the connecting mesh 3, causing the connecting mesh 3 to open. When the spring 10 extends to its original length, the upper heat-conducting mesh 2 rises to its highest state, and the connecting mesh 3 is also in a fully unfolded state.

[0096] Then the upper plate 14 can be removed upwards, and the mold to be poured can be left to stand and foam. During foaming, more pores will be produced in the poured raw material, and their height will increase upwards, gradually wrapping the connecting mesh 3 and the upper heat-conducting mesh 2 inside the raw material. After foaming is completed, let it stand and dry before high-temperature calcination.

[0097] During actual manufacturing, the applicant discovered that when the upper heat-conducting mesh 2 and the inner plate 13 are attached together and move upwards, raw materials adhere to the contact surfaces of the heat-conducting mesh 2 and the inner plate 13. The main reason is that since the heat-conducting mesh 2 has a mesh structure, the gap between it and the inner plate 13 is relatively small. Combined with the mesh openings of the heat-conducting mesh 2, raw materials can enter the mesh openings and the gaps between them, generating adhesive force. This causes the raw materials to adhere to the contact surfaces of the heat-conducting mesh 2 and the inner plate 13. The adhered raw materials move upwards along with the contact surfaces of the heat-conducting mesh 2 and the inner plate 13, causing the material adhesion. To solve this problem, this application also provides a damping hole 17 at the bottom of the sliding part 16. The bottom of the sliding part 16 is a closed structure, and a sealing gasket is provided between the bottom of the side plate 6 and the inner wall of the sliding part 16, forming a seal between the side plate 6 and the inner cavity of the sliding part 16.

[0098] When the upper plate 14 is removed upwards, it can be quickly lifted upwards. The upper plate 14 will move the inner plate 13 upwards, while the side plate 6, the upper side plate 12, and the upper heat-conducting mesh 2 will also move upwards under the elastic force of the spring 10. However, when the side plate 6 slides upwards inside the sliding part 16, a small amount of air can enter the damping hole 17, and a negative pressure will be generated inside the sliding part 16, which will slow down the extension speed of the spring 10. That is, the speed of the side plate 6, the upper side plate 12, and the upper heat-conducting mesh 2 is significantly slower than the speed of the inner plate 13. This allows for a differential speed rise between the upper heat-conducting mesh 2 and the inner plate 13. In the initial stage of the upper plate 14 rising, the inner plate 13 can separate from the upper heat-conducting mesh 2, and the gap between the inner plate 13 and the heat-conducting mesh 2 increases, which can reduce the adhesion of raw materials. At the same time, the upper heat-conducting mesh 2 rises slowly, and the raw materials in the mesh will fall downwards, thus solving the problem of raw materials adhering to the bonding surface of the heat-conducting mesh 2 and the inner plate 13.

[0099] In addition to using the above-described structure to fix the position of the upper plate 14, negative pressure can also be used to move the limiting plate 7. In a further embodiment, as shown in Figures 9-15, the limiting plate 7 is still designed as an L-shaped structure. The bottom of the limiting plate 7 is rotatably mounted on both sides of the base plate 4 via a first rotating shaft. A torsion spring is installed on the outer side of the first rotating shaft. A telescopic plate 22 is rotatably mounted on the side wall of the limiting plate 7 near the extension plate 61. The telescopic plate 22 includes a sliding plate 221 and an outer plate 222. The outer plate 222 is designed as a cavity structure with an opening on one side. One end of the sliding plate 221 extends into the outer plate 222 and can slide inside the outer plate 222. A limiting block (not shown in the figure) is fixedly installed at the opening of the outer plate 222. The limiting block limits the sliding plate 221 to prevent it from falling out of the cavity of the outer plate 222.

[0100] A horizontal plate 23 is fixedly installed on the upper end of the side of the limiting plate 7 near the extension plate 61 (as shown in Figure 9, the horizontal plate 23 may not be provided, and the upper end of the telescopic plate 22 is rotatably connected to the inner top of the limiting plate 7. The principle is the same as that of setting the horizontal plate. In this embodiment, the structure of setting the horizontal plate 23 is described in detail). The horizontal plate 23 is set perpendicular to the side of the limiting plate 7. The ends of the sliding plate 221 and the outer plate 222 that are far apart from each other are rotatably connected to the upper end face of the horizontal plate 23 and the extension plate 61 respectively through the second rotating shaft. The bottom of the sliding part 16 is fixedly installed with an air extraction pipe 24. The air extraction pipe 24 is provided with an air extraction hole. The air can be extracted by using an air pump or other air extraction equipment to remove the air inside the sliding part 16, so that the inside of the sliding part 16 generates negative pressure. As the pressure continues to drop, the spring 10 will be compressed under the action of air pressure, and the upper plate 14, the side plate 6, the upper side plate 12 and the heat-conducting mesh 2 located at the top will move downward together. During movement, the sliding plate 221 slides outward within the outer plate 222, and the telescopic plate 22 extends. As the spring 10 continues to compress, when the telescopic plate 22 reaches its longest extension, it can rotate with the limiting plate 7. When the spring 10 is compressed to the casting height of the mold, the evacuation can be stopped, and the evacuation hole can be sealed. In this state, the telescopic plate 22 remains parallel to the side of the limiting plate 7, and both the side of the limiting plate 7 and the telescopic plate 22 are in a vertical position.

[0101] Multiple pads 20 are placed between the upper end of the limiting plate 7 and the upper plate 14. The height of the pads 20 is set according to the distance between the limiting plate 7 and the upper plate 14 when designing the mold for the foamed thermal insulation ceramic board. The pads 20 are reusable. The pads 20 can be fixed to the limiting plate 7 and the upper plate 14 with bolts, or they can be magnetically attached between the limiting plate 7 and the upper plate 14 (for example, the pads 20 are made of strong magnetic material). The sides of the limiting plate 7 and the upper plate 14 are made of magnetic metal. The function of the pads 20 is to restrict the movement of the upper plate 14. When the mold is horizontally placed and the raw material is poured, the upper plate 14 will not move, so that the designed pouring height remains unchanged.

[0102] After the pouring is completed, the pad plate 20 can be removed and the vent hole can be opened. Under the action of the spring 10, the upper plate 14, the side plate 6, the upper side plate 12 and the heat-conducting mesh 2 located at the top move up and down together. At the same time, the limiting plate 7 rotates outward and opens under the action of the torsion spring, so that the upper plate 14 and the inner plate 13 can be removed.

[0103] In a further embodiment, an upper fixing plate 18 is fixedly installed on the upper end face of the upper plate 14, forming a sliding cavity between the upper fixing plate 18 and the upper plate 14, as shown in Figures 14 and 15. The sliding cavity has an open structure on both sides near the limiting plate 7. A sliding plate 19 that can slide outward from the open structure is slidably installed in the sliding cavity. A vertical plate is fixedly installed at one end of the sliding plate 19 outside the sliding cavity. A transition plate 21 is rotatably installed on the upper end of the vertical plate through a third rotating shaft. Multiple pads 20 are placed on the upper end of the transition plate 21, and the pads 20 can be freely placed. Threaded holes are opened on the upper end of the limiting plate 7, the pads 20, and the transition plate 21, and the three can be installed together using bolts.

[0104] In this embodiment, when the vent is opened and gas enters the inner cavity of the sliding part 16, the spring 10 extends upward, moving the upper plate 14, inner plate 13, side plate 6, extension plate 61, upper side plate 12, and the heat-conducting mesh 2 located at the top upward together. At the same time, the limiting plate 7 rotates outward under the action of the torsion spring, as shown by arrow a in Figure 11, and moves the telescopic plate 22 upward.

[0105] When the limiting plate 7 rotates outward, the upper end of the limiting plate 7 will slide the slide plate 19 outward from the sliding cavity, as shown by arrow b in Figure 11. At the same time, the limiting plate 7 will also move the upper plate 14 and the inner plate 13 upward, as shown by arrow c in Figure 11. The angle at which the limiting plate 7 begins to rotate outward is always limited by the length of the telescopic plate 22. When the limiting plate 7 rotates outward to a position that does not affect the upward removal of the upper plate 14, the limiting plate 7 can stop rotating, and the torsion force of the torsion spring on the limiting plate 7 disappears. At this time, the side plate 6, the extension plate 61, the upper side plate 12, and the heat-conducting mesh 2 located at the top can continue to rise under the elastic force of the spring 10, while the telescopic plate 22 shortens and retracts.

[0106] As shown in Figure 17, in this embodiment, when the limiting plate 7 is vertical, the second rotation axis of the telescopic plate 22 and the extension plate 61, the third rotation axis of the limiting plate 7 and the slide plate 19, and the first rotation axis of the limiting plate 7 are on the same straight line (that is, points O, A and C as shown in Figure 17 are on the same straight line).

[0107] In this embodiment, the angle between the straight line formed by points O, A, and C and the horizontal plane is as small as possible to be less than 45°. This is mainly because when the limiting plate 7 rotates upward, the distance that point C moves in the vertical direction is greater than the distance it moves in the horizontal direction.

[0108] When the limiting plate 7 starts to rotate outward, the distance between OC is the radius of motion at the edge of the slide plate 19. Within a unit length, the upward trajectory of point A can be approximately the same as the trajectory of point C. That is, within a unit length, the upward trajectory of point A can be approximately regarded as a rotational motion with point O as the center, and the radius of rotation is 0A.

[0109] Furthermore, since points O, A, and C are on the same straight line, the rotation angles of OA and OC are considered to be the same when the limit plate 7 rotates.

[0110] The formula for calculating arc length is:

[0111] In the formula:

[0112] n is the angle of the center of the circle;

[0113] r is the radius;

[0114] It can be seen that the larger the radius, the larger the arc length L. Since the distance between OC is greater than the distance between OA, the arc length of point C is greater than the arc length of A. That is to say, in the initial stage of the motion, the distance point C rises per unit length is slightly greater than the distance point A rises.

[0115] In reality, when point A moves upward, the telescopic plate 22 also moves upward, causing the rotation angle of the limiting plate 7 to be greater than the upward angle of point A. This means the arc length of point C's movement is greater than the path of point A's movement. Initially, the upward distance of point C is greater than the upward distance of point A. In other words, the upward distance of the upper plate 14 and inner plate 13 is greater than the upward distance of the side plate 6, extension plate 61, upper side plate 12, and the upper heat-conducting mesh 2. Within the same time frame, the speed of the upper plate 14 and inner plate 13 is greater than the speed of the side plate 6, extension plate 61, upper side plate 12, and the upper heat-conducting mesh 2.

[0116] When the limiting plate 7 begins to rotate outward (i.e., upward), the upper end of the limiting plate 7 will move the sliding plate 19 outward in the sliding cavity, causing the upper plate 14 and inner plate 13 to move upward synchronously. At the same time, the spring 10 will move the side plate 6, extension plate 61, upper side plate 12, and the heat-conducting mesh 2 located at the top upward synchronously. In the initial movement, the upward speed of the inner plate 13 is greater than the upward speed of the heat-conducting mesh 2, and the inner plate 13 will separate from the heat-conducting mesh 2, realizing the separation and upward movement between the two. When detaching from the casting surface, the gap between the inner plate 13 and the heat-conducting mesh 2 will increase, which can prevent the raw materials from adhering to the contact surface between the two.

[0117] As the limiting plate 7 continues to rotate, when the limiting plate 7 rotates to a state close to vertical, the rising speed and distance of the upper plate 14 and the inner plate 13 will decrease significantly. However, at this time, the upper heat-conducting mesh 2 and the inner plate 13 have already detached from the casting surface. Therefore, the subsequent movement will not affect the forming of the entire mold.

[0118] When the limit plate 7 is fully opened, the bolts and pad 20 can be removed, and the upper plate 14 can be removed to foam the poured raw materials.

[0119] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

[0120] Type the free content description paragraph for the sequence list here.

Claims

1. A molding die for foamed thermal insulation ceramic panels, characterized in that, include: The base plate (4) has two symmetrically arranged sliding parts (16) fixedly installed on it. The upper end of the sliding part (16) is equipped with a side plate (6) that can slide up and down. An extension plate (61) is fixedly installed on the outer side of the side plate (6). A spring (10) is fixedly installed between the extension plate (61) and the base plate (4). The spring (10) is used to provide an upward elastic force to the extension plate (61). The upper edge of the two sliding parts (16) is used to place a heat-conducting mesh (2). End plate (15) is located on the front and rear sides of the base plate (4). The front end plate (15) is connected to the base plate (14) by bolts, and the rear end plate (15) is fixedly connected to the rear side of the base plate (4). The magnetic block (11) is attracted to the upper edge of the sliding part (16) to fix the heat-conducting mesh (2) located at the bottom. The upper side panel (12) is inserted into the upper end of the side panel (6) to provide the foaming space for the foamed thermal insulation ceramic board; The upper plate (14) is in contact with the top of the upper side plate (12) on its lower side. When it is pressed, the upper plate (14) can move downward together with the upper side plate (12) and the side plate (6). The limiting plate (7) is rotated and installed on the bottom plate (4). After the upper plate (14) moves downward, it limits the upper plate (14) to form a space for pouring foamed thermal insulation ceramic board.

2. The molding die for foamed thermal insulation ceramic panels according to claim 1, characterized in that: It also includes an inner plate (13), which is fixedly installed at the bottom of the upper plate (14), and the distance between the two is the same as the height of the upper side plate (12); A protruding strip is fixedly installed on the upper end of the side plate (6), and a slot matching the protruding strip is provided at the bottom of the upper side plate (12); The bottom surface of the upper side plate (12) and the upper end surface of the side plate (6) are used to clamp the heat-conducting mesh (2) located at the top.

3. The molding die for foamed thermal insulation ceramic panels according to claim 2, characterized in that: The limiting plate (7) has an L-shaped structure. The bottom of the limiting plate (7) is rotatably installed on both sides of the base plate (4) through the first rotating shaft. Vertical plates (5) are also fixedly installed on both sides of the base plate (4). When the limiting plate (7) is rotated to the vertical state, it abuts against the outside of the vertical plate (5). The limiting plate (7) has a waist-shaped hole (8), and a threaded rod (9) is fixedly installed on the vertical plate (5). The threaded rod (9) passes through the waist-shaped hole (8) and extends to the outside of the waist-shaped hole (8). A threaded cap is rotatably installed at one end of the threaded rod (9) located outside the waist-shaped hole (8). Rotating the threaded cap allows the limiting plate (7) to rotate towards the side closer to the vertical plate (5) until the limiting plate (7) and the vertical plate (5) are in contact.

4. The molding die for foamed thermal insulation ceramic panels according to claim 3, characterized in that: The bottom of the limiting plate (7) is rotatably mounted on both sides of the base plate (4) via a first rotating shaft, and a torsion spring is installed on the outer side of the first rotating shaft. Vertical plates (5) are also fixedly installed on both sides of the base plate (4). When the limiting plate (7) rotates to the vertical position, it abuts against the outside of the vertical plate (5). The limiting plate (7) is rotatably mounted with a telescopic plate (22) on one side wall near the extension plate (61). The other end of the telescopic plate (22) is rotatably connected to the extension plate (61). When the extension plate (61) moves downward with the side plate (6), the telescopic plate (22) gradually extends. The telescopic plate (22) is used to rotate the limiting plate (7). Multiple pads (20) are placed between the upper end of the limiting plate (7) and the upper plate (14).

5. The molding die for foamed thermal insulation ceramic panels according to claim 4, characterized in that: An upper fixing plate (18) is fixedly provided on the upper end face of the upper plate (14). A sliding cavity is formed between the upper fixing plate (18) and the upper plate (14). A sliding plate (19) that can slide outward is symmetrically installed in the sliding cavity. A transition plate (21) is rotatably mounted on the upper side of the sliding cavity outside the sliding cavity of the sliding plate (19). Multiple pads (20) are placed above the transition plate (21). The upper end of the limiting plate (7) is connected to the pads (20) and the transition plate (21) by bolts.

6. The molding die for foamed thermal insulation ceramic panels according to claim 5, characterized in that: The bottom of the sliding part (16) is provided with a damping hole (17).

7. A method for molding a foamed thermal insulation ceramic board, using a molding die for a foamed thermal insulation ceramic board as described in any one of claims 1-6, characterized in that, Includes the following steps: Install the side plate (6) and the sliding part (16) together, and place the lower heat-conducting mesh (2) on the upper end of the sliding part (16) and fix it by magnetic attraction block (11); Place the upper heat-conducting mesh (2) on the upper end of the side plate (6) and press it together with the upper side plate (12); The upper plate (14) is moved downward by the pressure device, and the spring (10) is compressed. When the upper plate (14) moves downward, it will bring the side plate (6) to slide downward in the sliding part (16), and the upper heat-conducting mesh (2) and the lower heat-conducting mesh (2) will move closer to each other. When the slide reaches the preset height, the limiting plate (7) is rotated to a vertical position, and the upper end of the limiting plate (7) contacts the upper plate (14) to limit the upper plate (14), thereby forming a casting cavity; Remove the front end plate (15) to open the mold, place the mold vertically, and pour the slurry into the pouring cavity. After pouring, install the front end plate (15). Rotate the limiting plate (7) outward, and under the action of the spring (10), the side plate (6) and the upper plate (14) rise to reserve space for foaming, and let it stand to foam.

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