Foamed thermal insulation ceramic plate, foamed thermal insulation ceramic plate forming mold and forming method

Abstract

The present invention discloses a foamed thermal insulation ceramic plate, which relates to the field of ceramic thermal insulation plates, including a plate body, a heat-conducting net is pre-buried inside the plate body, the heat-conducting net is arranged close to the heating surface of the plate body, and when the plate body is heated, the heat-conducting net can transfer heat inside the plate body, and the heat-conducting net is arranged in two layers inside the plate body, one of which is close to one side of the plate body, and the other is close to the other side of the plate body; a connecting net is fixedly connected to the two heat-conducting nets respectively, and is located in the middle of the plate body. When the foamed thermal insulation ceramic plate is formed, the present invention puts the heat-conducting net in the poured slurry, and when the foamed thermal insulation ceramic plate is heated, the heating surface can transfer heat to the heat-conducting net, and the heat-conducting net can realize heat transfer inside the foamed thermal insulation ceramic plate, improve the heat transfer efficiency inside the foamed thermal insulation ceramic plate, and ensure that the foamed thermal insulation ceramic plate expands more evenly when heated, reducing cracking and bursting.

Description

Technical Field

[0001] The invention relates to the field of ceramic thermal insulation boards, in particular to a foamed thermal insulation ceramic board, a foamed thermal insulation ceramic board forming die and a forming method. Background Art

[0002] Foamed thermal insulation ceramic panels are mainly made of materials with large shrinkage rates. The raw materials include clay tailings, quartz sand, feldspar, calcium carbonate, perlite, bentonite and other particles. They have the advantages of light weight, heat insulation, fire resistance and environmental protection. They are new wall materials that have entered the market in recent years. During production, foamed thermal insulation ceramic panels need to go through pulping, foaming, drying and calcining processes. Foamed thermal insulation ceramic panels are mostly suitable for building exterior wall insulation, fireproof isolation belts, cast self-insulating cooling hot walls, indoor non-load-bearing walls, etc.

[0003] Since the foamed ceramic board is mainly made of materials with large shrinkage rates, in order to reduce the weight of the entire board material and undergo foaming treatment, these characteristics determine that the material must have a large shrinkage during the heating process. When the board material is heated, due to the porous material and the slow heat conduction rate, the foamed ceramic board has different expansion rates during the heating process, resulting in different stresses in different areas (the board in the area with higher temperature has a faster expansion rate and generates greater stress). As the stress continues to increase, it will eventually exceed the level that the material itself can withstand, causing the board to crack and even burst into pieces. Summary of the invention

[0004] The object of the present invention is to provide a foamed thermal insulation ceramic board, a foamed thermal insulation ceramic board forming mold and a forming method to solve the technical problems raised in the above background technology.

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

[0006] The plate body has a heat-conducting net embedded in the interior of the plate body. The heat-conducting net is arranged close to the heating surface of the plate body. When the plate body is heated, the heat-conducting net can transfer heat inside the plate body.

[0007] Preferably, the heat conducting net is provided with two layers inside the plate body, one layer is close to one side of the plate body, and the other layer is close to the other side of the plate body;

[0008] The connecting nets are respectively fixedly connected to the two heat conducting nets and are located in the middle of the plate body.

[0009] Preferably, the connecting net is placed obliquely inside the plate body.

[0010] A foam thermal insulation ceramic plate forming mold, used to realize the forming of the foam thermal insulation ceramic plate, comprising:

[0011] A bottom plate, two symmetrically arranged sliding parts are fixedly installed on the bottom plate, a side plate capable of sliding up and down is installed on the upper end of the sliding part, 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 bottom plate, the spring is used to provide an upward elastic force to the extension plate, and the upper edge of the two sliding parts is used to place a heat conduction net;

[0012] The end plates are located at the front and rear sides of the bottom plate, the front end plate is connected to the bottom plate by bolts, and the rear end plate is fixedly connected to the rear side of the bottom plate;

[0013] A magnetic block is attached to the upper edge of the sliding part and is used to fix the heat-conducting net at the lower part;

[0014] The upper side plate is plugged together with the upper end of the side plate to provide a foaming space for the foamed thermal insulation ceramic plate;

[0015] The upper plate, the lower side of which is in contact with the top of the upper side plate, can move downward with the upper side plate and the side plate when under pressure;

[0016] The limit plate is installed on the bottom plate by rotation at the bottom. After the upper plate moves downward, the upper plate is limited to form a pouring space for the foam insulation ceramic plate.

[0017] Preferably, it also includes an inner plate, which is fixedly mounted on the bottom of the upper plate, and the distance between the inner plate and the lower plate is the same as the height of the upper side plate;

[0018] The convex strip is fixedly mounted on the upper end of the side plate, and a slot matching the convex strip is provided at the bottom of the upper side plate;

[0019] The bottom surface of the upper side plate and the upper end surface of the side plate are used to clamp the heat conduction net located at the upper part.

[0020] Preferably, the limiting plate is an L-shaped structure, the bottom of the limiting plate is rotatably mounted on both sides of the bottom plate through a first rotating shaft, and vertical plates are fixedly mounted on both sides of the bottom plate. When the limiting plate is rotated to a vertical state, it abuts against the outer sides of the vertical plates;

[0021] A waist-shaped hole is opened on the limit plate, a threaded rod is fixedly installed on the vertical plate, the threaded rod passes through the waist-shaped hole and extends to the outside of the waist-shaped hole, and a threaded cap is rotatably installed on one end of the threaded rod located outside the waist-shaped hole;

[0022] By turning the threaded cap, the limiting plate can be rotated toward the side close to the vertical plate until the limiting plate and the vertical plate fit together.

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

[0024] Vertical plates are also fixedly installed on both sides of the bottom plate. When the limit plate rotates to a vertical state, it abuts against the outer side of the vertical plate.

[0025] A telescopic plate is rotatably mounted on one side wall of the limiting plate close to the extension plate, and the other end of the telescopic plate is rotatably connected to the extension plate. When the extension plate moves downward following the side plate, the telescopic plate gradually extends, and the telescopic plate is used to rotate with the limiting plate;

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

[0027] Preferably, an upper fixed plate is fixedly provided on the upper end surface of the upper plate, a sliding cavity is formed between the upper fixed plate and the upper plate, and a sliding plate capable of sliding outward is symmetrically installed in the sliding cavity;

[0028] A transition plate is rotatably mounted on the upper end of one side of the sliding plate outside the sliding cavity, a plurality of pads are placed above the transition plate, and the upper end of the limit plate is connected to the pad and the transition plate through bolts.

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

[0030] A method for forming a foamed thermal insulation ceramic plate, using the above-mentioned foamed thermal insulation ceramic plate forming mold, comprises the following steps:

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

[0032] Place the upper heat-conducting net on the upper end of the side plate and press and fix it with the upper side plate;

[0033] The upper plate is moved downward by using a pressure device and the spring is compressed. When the upper plate moves downward, it will slide the side plate downward on the sliding part and make the upper heat-conducting net and the lower heat-conducting net close to each other.

[0034] When sliding to a preset height, the limit plate is rotated to a vertical state, the limit plate contacts the upper end of the upper plate, and the upper plate is limited, thereby forming a casting cavity;

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

[0036] The limit plate is rotated outwards, and the side plate and the upper plate rise under the action of the spring to reserve a foaming space, and then the foaming is allowed to stand.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] When the foamed thermal insulation ceramic board is formed, the present invention puts a heat-conducting net in the poured slurry. When the foamed thermal insulation ceramic board is heated, the heated surface can transfer heat to the heat-conducting net. The heat-conducting net can realize heat transfer inside the foamed thermal insulation ceramic board, improve the heat transfer efficiency inside the foamed thermal insulation ceramic board, ensure that the foamed thermal insulation ceramic board expands more evenly when heated, and reduce cracking and bursting. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The structure of the foamed thermal insulation ceramic plate of the present invention is Figure 1 ;

[0040] Figure 2 The structure of the foamed thermal insulation ceramic plate of the present invention is Figure 2 ;

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

[0042] Figure 4 This is a curve diagram of the average temperature rise on the back-fired surface of the comparison group of the present invention;

[0043] Figure 5 This is a curve diagram of the average temperature rise of the back-fired surface of the experimental group of the present invention;

[0044] Figure 6 This is a structural exploded diagram of the molding die of the present invention;

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

[0046] Figure 8 A forming diagram of a structure of the forming die of the present invention;

[0047] Fig. 9 Another structural cross-sectional view of the molding die of the present invention;

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

[0049] Fig.11 This is a structural diagram of the third structure of the molding die of the present invention, in which the limit plate rotates outward;

[0050] Fig.12 This is a structural diagram of the third structure of the molding die of the present invention, in which the limiting plate is rotated to the outermost part;

[0051] Fig.13 An exploded view of the third structure of the molding die of the present invention;

[0052] Fig.14 It is a structural diagram of the upper plate, inner plate and slide plate of the present invention;

[0053] Fig.15 It is a structural diagram of the side plate, the extension plate, the telescopic plate and the limit plate of the present invention;

[0054] Fig.16 It is a structural diagram of the telescopic plate of the present invention;

[0055] Fig.17 The figure is a schematic diagram of the movement of the upper plate, the inner plate and the side plate when the limit plate of the present invention rotates.

[0056] In the figure: 1. plate body; 2. heat-conducting net; 3. connecting net; 4. bottom plate; 5. vertical plate; 6. side plate; 61. extension plate; 7. limit 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 fixed plate; 19. slide plate; 20. pad; 21. transition plate; 22. telescopic plate; 221. sliding plate; 222. outer plate; 23. horizontal plate; 24. exhaust pipe. DETAILED DESCRIPTION

[0057] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] See also Figure 1-3 The present embodiment provides a foamed thermal insulation ceramic plate, comprising a foamed plate body 1, a heat-conducting net 2 is pre-buried inside the plate body 1, the heat-conducting net 2 is located at a position of the plate body 1 close to the heating surface, and the heat-conducting net 2 is preferably a mesh structure of a metal material with good thermal conductivity; in the present embodiment, the heat-conducting net 2 is made of 310S stainless steel wire mesh, which can withstand a maximum temperature of 1250 degrees Celsius, and can withstand a high temperature calcination of 1000-1200°C together with the foamed thermal insulation ceramic plate.

[0059] When the board body 1 is installed on the outside of the wall as a heat insulation board, the thickness of the foam layer of the board body 1 is mostly 1.7 cm, and the distance between the heat conductive net 2 and the heating surface of the board body 1 is within 0.5-1 cm. The heating surface of the board body 1 faces the outside for heating, and is used to withstand sunlight, etc. When the temperature of the heating surface rises due to sunlight, the temperature will be directly transferred to the heat conductive net 2. Under the heat conduction of the heat conductive net 2, the temperature can be more evenly transferred inside the board body 1, which can ensure that the entire board body 1 is heated evenly. And because the inside of the board body 1 has a porous structure, while ensuring that the heat is evenly transferred on the board body 1, the board body 1 also has a good heat preservation effect.

[0060] When the foamed thermal insulation ceramic board is used as a non-load-bearing wall indoors, the thickness of the board body 1 is mostly selected as 8cm, 10cm, 12cm, 15cm, 18cm and 20cm. When the board body 1 is thicker, in order to improve the thermal conductivity of the board body 1, two layers of thermal conductive mesh 2 are provided. The two layers of thermal conductive mesh are pre-buried inside the board body 1. One of the thermal conductive meshes 2 is close to one side of the board body 1, and the distance between the side and the thermal conductive mesh is between 0.5-2cm. The other thermal conductive mesh 2 is arranged close to the other side of the board body 1, and the distance from the other side is also between 0.5-2cm. A connecting mesh 3 is arranged between the two layers of thermal conductive mesh 2, and the material of the connecting mesh 3 is the same as that of the thermal conductive mesh 2. The two end faces of the connecting mesh 3 are fixedly connected to the two layers of thermal conductive mesh respectively, and the connecting mesh 3 is located in the middle of the board body 1, such as Figure 2-3 The connecting net 3 is tilted, and the angle between it and the heat conducting net 2 is 45°.

[0061] When one side of the foamed thermal insulation ceramic plate is heated, the heat will be transferred to the heat-conducting net 2. Under the heat transfer effect of the heat-conducting net 2, the heat will be transferred inside the board body 1 along the heat-conducting net 2 and the connecting net 3, so that the heating of the board body 1 is more uniform, which can ensure that the heating temperature of the entire board body 1 remains uniform, thereby ensuring that the foamed thermal insulation ceramic plate maintains almost the same rate of expansion and deformation when heated, reducing the occurrence of cracking or even bursting of the foamed ceramic plate due to different thermal expansion rates.

[0062] The applicant selected the improved panels as the experimental group: the thicknesses were 8cm, 10cm and 12cm respectively, and the comparison group: the thicknesses were 8cm, 10cm and 12cm respectively. The comparison group selected the existing ordinary foamed ceramic insulation board, and the production environment and conditions of the comparison group and the experimental group were kept similar.

[0063] Experimental process: The above-selected materials are installed on the experimental frame by splicing. The adjacent wall panels are sealed and smoothed with seam materials. The thickness of the mortar joints is kept consistent, about 10mm. Thermocouples are set on the back of the above-mentioned panels to measure the temperature. The experimental standard refers to GB / T9978.8-2008 "Fire resistance test method for building components".

[0064] like Figure 4 To compare the average temperature rise curve of the back-fired surface of the board, Figure 5 This is the average temperature rise curve of the back-fired surface of the experimental board. Through comparison, it is found that at the same time, the back-fired surface temperature of the experimental board is slightly higher than that of the comparison board, but it still has a good thermal insulation effect.

[0065] The fire resistance test of the board is as follows:

[0066] Comparison group:

[0067] 8cm thick comparison plate: At 7 minutes and 11 seconds, cracks appeared on the back-fired side of the plate; at 17 minutes and 3 seconds, a hole that could be penetrated by a probe (the diameter of the probe was 25mm) appeared on the back-fired side.

[0068] 10cm thick comparison plate: At 7 minutes and 52 seconds, cracks appeared on the back-fired side of the plate; at 21 minutes and 2 seconds, a hole that could be penetrated by a probe (the diameter of the probe was 25mm) appeared on the back-fired side.

[0069] 12cm thick comparison plate: At 8 minutes and 51 seconds, cracks appeared on the back-fired side of the plate; at 26 minutes and 44 seconds, a hole that could be penetrated by a probe (the diameter of the probe was 25mm) appeared on the back-fired side.

[0070] Experimental Group:

[0071] 8cm thick comparison plate: At 7 minutes and 32 seconds, cracks appeared on the back-fired side of the plate; at 17 minutes and 56 seconds, a hole that could be penetrated by a probe (the diameter of the probe was 25mm) appeared on the back-fired side.

[0072] 10cm thick comparison board: At 8 minutes and 33 seconds, cracks appeared on the back-fired side of the board; at 24 minutes and 13 seconds, a hole that could be penetrated by a probe (the diameter of the probe was 25mm) appeared on the back-fired side.

[0073] 12cm thick comparison board: At 9 minutes and 24 seconds, cracks appeared on the back-fired side of the board; at 28 minutes and 13 seconds, a hole that could be penetrated by a probe (the diameter of the probe was 25mm) appeared on the back-fired side.

[0074] Through the above comparison, it can be found that the performance of the foamed thermal insulation ceramic board is significantly improved by setting the metal thermal conductive mesh. Due to the thermal conductivity of the metal mesh, the heat of the heated surface of the foamed thermal insulation ceramic board can be better transferred inside the foamed thermal insulation ceramic board under the transfer effect of the thermal conductive mesh 2 and the connecting mesh 3, so that the heating of the board can be relatively more uniform. While the foamed thermal insulation ceramic board maintains good thermal insulation performance, it reduces the occurrence of cracking of the board due to different expansion rates of the board caused by uneven heating of the board.

[0075] Since the foamed thermal insulation ceramic plate needs to be foamed in the mold during production, the foaming height is significantly higher than the height when pouring the raw materials. Therefore, how to bury the heat-conducting net 2 and the connecting net 3 inside the foamed thermal insulation ceramic plate is a problem that needs to be considered. If the heat-conducting net 2 and the connecting net 3 are directly poured into the mold when pouring the raw materials, the positions of the heat-conducting net 2 and the connecting net 3 in the raw materials will hardly change. However, since the foamed thermal insulation ceramic plate is produced accompanied by the foaming process, the foaming height is higher than the pouring height, and the positions of the heat-conducting net 2 and the connecting net 3 will deviate, which is obviously different from the designed position. Therefore, the present application also designs a mold specifically used for the molding of the above-mentioned foamed thermal insulation ceramic plate, which can better mold the heat-conducting net 2 and the connecting net 3 into an integrated structure with the foamed thermal insulation ceramic plate according to the designed position.

[0076] The specific design is as follows: Figure 6-8 As shown, the bottom plate 4 includes a bottom plate 4. In this embodiment, the bottom plate 4 is a rectangular plate structure, and two symmetrically distributed sliding parts 16 are fixedly installed on the bottom plate 4. Figure 6 As shown, the sliding part 16 is a rectangular cavity structure and is arranged perpendicularly to the bottom plate 4. End plates 15 are installed at the front and rear ends of the bottom plate 4. The end plate 15 on the rear side is fixedly connected to the bottom plate 4 and the outer side of the sliding part 16, and the end plate 15 on the front side is connected to the bottom plate 4 and the outer side of the sliding part 16 by bolts. The end plate 15 on the front side can be removed from the bottom plate 4 and the sliding part 16. It should be noted that the threaded holes for installing the end plates 15 on the sliding part 16 do not penetrate the side walls of the sliding part 16, so as to ensure that the side plates 6 can slide in the inner cavity of the sliding part without hindrance.

[0077] The upper end and the bottom of the sliding part 16 are both open structures, and the side plate 6 is installed in the sliding part 16. Figure 6-8 As shown, the bottom side of the side plate 6 is located in the cavity of the sliding portion 16 , and the side plate 6 can slide up and down in the cavity of the sliding portion 16 , so that the distance between the upper end surface of the side plate 6 and the bottom plate 4 can be adjusted.

[0078] A rubber pad is fixedly installed on the outer side of the bottom of the side panel 6 and is in close contact with the side wall of the cavity of the sliding part 16. The rubber pad is squeezed in the cavity of the sliding part 16 and there is friction between the rubber pad and the sliding part 16. Under the action of the friction, when not affected by external force, the side panel 6 can stop at any position without sliding.

[0079] In this embodiment, the sliding part 16 is made of magnetic metal, and the upper end surfaces of the two sliding parts 16 are used to place the heat-conducting net 2, and the edge of the heat-conducting net 2 is close to the side plate 6, but does not contact the side plate 6. A magnetic block 11 is also provided at the upper edge of the sliding part 16. The magnetic block 11 can be adsorbed together with the upper end of the sliding part 16 and provide a pressing force to the heat-conducting net 2, so that the heat-conducting net 2 and the upper end of the sliding part 16 are installed together. 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 net 2 and the heating surface.

[0080] Before pouring, it is necessary to determine the pouring height of the foamed thermal insulation ceramic board, install the heat-conducting net 2 and the sliding part 16 together, and use bolts to install the end plate 15 on the front side to form a mold with an opening on the top. The raw materials can be poured into the mold, and then left to stand and wait for foaming. The mold in this embodiment is only suitable for foamed thermal insulation ceramic boards with a relatively thin thickness, such as boards used as exterior wall insulation boards for buildings, with a thickness of less than 5 cm. Moreover, for relatively thin boards, only one layer of heat-conducting net 2 is needed to improve the performance of the foamed thermal insulation ceramic board.

[0081] For thicker foam thermal insulation ceramic plates (mostly more than 5cm), due to the thickness of the plates, if only one layer of thermal conductive mesh 2 is set, the thermal conductivity will still be poor. Therefore, a special mold is designed for thicker plates. Thicker foam thermal insulation ceramic plates are provided with two layers of thermal conductive mesh 2 and a connecting mesh 3. If the raw materials are poured from the top, the direction in which the raw materials fall is perpendicular to the thermal conductive mesh 2. When the materials are poured, the thermal conductive mesh 2 and the connecting mesh 3 will hinder the falling of the raw materials. In serious cases, due to the obstruction of the thermal conductive mesh 2 and the connecting mesh 3, a large gap will be left between the raw materials and the thermal conductive mesh 2 and the connecting mesh 3, affecting the quality of the foam thermal insulation ceramic plates.

[0082] In a further embodiment, an extension plate 61 is fixedly mounted on the outer side of the side plate 6. Figure 6 As shown, the extension plate 61 is arranged parallel to the base plate 4, and a spring 10 is installed between the extension plate 61 and the base 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 surface of the base plate 4. The spring 10 provides an upward elastic force to the extension plate 61.

[0083] The upper end of the side panel 6 is also plugged with a removable and replaceable upper side panel 12, a convex strip is fixedly installed on the upper end of the side panel 6, and a slot is provided at the bottom of the upper side panel 12, which can be plugged into the outside of the convex strip. The installation between the upper side panel 12 and the side panel 6 can be realized. The upper side panel 12 and the side panel 6 are used to place the heat-conducting net 2 located at the upper part. In this embodiment, there is a large friction between the slot and the convex strip. After the upper heat-conducting net 2 is placed on the upper end of the side panel 6, the upper side panel 12 is inserted into the outside of the convex strip, and the upper side panel 12 is pressed to generate a large pressure on the upper heat-conducting net 2. After the pressing force is removed, due to the friction between the slot and the convex strip, the upper side panel 12 can maintain continuous pressure on the heat-conducting net 2, so that the upper heat-conducting net 2 is installed between the upper side panel 12 and the side panel 6. In this embodiment, the upper heat-conducting net 2 can also be clamped and installed by magnetic suction between the bottom of the upper side panel 12 and the side panel 6. For example, a magnetic strip is fixedly installed at the bottom of the upper side plate 12, a metal block is fixedly installed at the upper edge of the side plate 6, and the magnetic strip of the upper side plate 12 is adsorbed with the metal block of the side plate 6 to clamp and install the upper heat-conducting net 2. A foaming space of the foamed thermal insulation ceramic plate with an upper end opening is formed between the upper side plate 12, the side plate 6 and the bottom plate 4.

[0084] The upper end surface of the bottom plate 4 serves as the bottom of the foaming space and the bottom surface of the foamed thermal insulation ceramic plate. Therefore, the distance between the heat-conducting net 2 at the bottom and the bottom plate 4 is between 0.5-2 cm. In this embodiment, it is preferably 1 cm.

[0085] The position of the upper heat-conducting net 2 is determined according to the foaming height. Take a 10 cm thick plate as an example: when the plate is foamed, the foaming surface will be uneven. In the later stage, it is necessary to cut off the uneven surface of the plate. It is necessary to determine the cutting height of the foamed plate. The height is generally determined according to practical experience. In this embodiment, the cutting height is calculated as 0.5 cm, that is, the foaming height of the plate is 10.5 cm. When determining the foaming height, it is only necessary to make the distance between the upper heat-conducting net 2 and the foaming height 1-2.5 cm. In this embodiment, it is preferably 1.5 cm; that is, after the spring 10 supports the upper side plate 12 and the side plate 6 and installs the upper heat-conducting net 2, the natural length of the spring 10 makes the upper heat-conducting net 2 1.5 cm away from the foaming height.

[0086] An upper plate 14 is provided at the upper opening of the foaming space. Figure 1The lower side of the upper plate 14 contacts the top of the upper side plate 12, and when the upper plate 14 moves downward, it can move downward with the upper side plate 12 and the side plate 6; a metal magnetic seat (not shown in the figure) is fixedly provided at the center of the upper end of the upper plate 14, a support rod is fixedly installed at the lower corner of the upper plate 14, and an inner plate 13 is fixedly installed at the bottom of the support rod, and 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, and the size of the inner plate 13 matches the upper end opening of the foaming space.

[0087] When the upper plate 14 moves downward with the inner plate 13, the inner plate 13 gradually moves downward in the foaming space. When the upper plate 14 and the upper end surface of the upper side plate 12 are attached together, the inner plate 13 just contacts with the upper heat-conducting net 2 and is attached to the heat-conducting net 2. After the upper plate 14 and the upper side plate 12 are attached, the upper plate 14 can continue to slide downward with the upper side plate 12 and the side plate 6 (the spring 10 is compressed during the downward sliding process) until it slides to the casting height of the plate, and then the downward movement of the upper plate 14 can be stopped. Figure 6 The downward movement of the upper plate 14 can be manually pressed downward or by a hydraulic press. During the whole process, due to the elastic force of the spring 10, the upper plate 14 is also subjected to an upward force.

[0088] The two sides of the bottom plate 4 are also rotatably mounted with limit plates 7. Figure 6-Figure 8 As shown, the limit plate 7 is an inverted L-shaped structure, a first rotating shaft is fixedly installed at the bottom of the limit plate 7, shaft holes are opened on both sides of the bottom plate 4, the first rotating shaft is rotatably installed in the shaft holes, a torsion spring is installed on the outer side of the first rotating shaft, one end of the torsion spring is fixedly connected to the limit plate 7, and the other end of the torsion spring is fixedly connected to the bottom plate 4, and the torsion spring provides an outward elastic force to the limit plate 7.

[0089] In this embodiment, vertical plates 5 are fixedly installed on both sides of the bottom plate 4. When the limit plate 7 rotates to a vertical state, the limit plate 7 can abut against the vertical plate 5, so that the limit plate 7 can stop rotating when it rotates to a vertical state. 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 limit plate 7. The threaded rod 9 passes through the waist-shaped hole 8 and is arranged outside 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. The threaded cap is larger than the width of the waist-shaped hole 8. The threaded cap is rotated and rotated forward along the axial direction of the threaded rod 9, and the limit plate 7 is rotated toward the side close to the vertical plate 5 until the limit plate 7 fits with the vertical plate 5. The threaded cap can be tightened to fix the limit plate 7. At this time, the upper end of the limiting plate 7 will contact the upper end surface of the upper plate 14, clamping or limiting the upper plate 14, preventing the upper plate 14 from moving upward under the elastic force of the spring 10, and keeping the height of the foaming 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 plate.

[0090] When the upper plate 14 moves downward, the heat-conducting net 2 at the upper part also moves downward and approaches the heat-conducting net 2 at the lower part, and the connecting net 3 between the two layers of heat-conducting nets 2 is in a wavy fold state, such as Figure 8 shown.

[0091] Before pouring the raw materials, the front end plate 15 is removed from the bottom plate 4 and the sliding part 16, and the upper plate 14 is pressed downward. The upper plate 14 moves downward with the inner plate 13 in the foaming space until the upper end surfaces of the upper plate 14 and the upper side plate 12 are fitted together. As the upper plate 14 continues to be pressed, the spring 10 is compressed, and the upper plate 14 continues to move downward with the upper side plate 12 and the side plate 6 until it moves to the pouring height; then the threaded nut is turned, and the limit plate 7 with the L-shaped structure is rotated to the side close to the vertical plate 5 until it is rotated to a vertical state, the threaded nut is tightened, and the position of the limit plate 7 is fixed by the threaded nut, and then the pressing force can be removed. The upper plate 14 maintains the pouring height unchanged under the limiting action of the limit plate 7.

[0092] During pouring, the assembled mold is turned over to a state where the front opening is arranged upward, and the raw material can be poured into the mold from the opening. When the raw material falls in the mold, it will fall vertically along the heat-conducting net 2 and the connecting net 3. The raw material will not vertically pass through the heat-conducting net 2, which can reduce the obstacles to the movement of the raw material by the heat-conducting net 2 and the connecting net 3, and the pouring effect of the raw material is better. During pouring, the heat-conducting net 2 at the bottom is poured into the raw material, and the heat-conducting net 2 at the top is in contact with the inner plate 13, so the heat-conducting net 2 at the top is at the end face of the poured raw material, and the connecting net 3 is also poured into the raw material.

[0093] After pouring is completed, the disassembled end plate 15 can be installed together with the bottom plate 4 and the sliding part 16, and the mold can be placed horizontally, and the bottom plate 4 can be placed on the ground or a workbench. Then, the threaded cap is rotated in the opposite direction, and the limit plate 7 rotates outward under the action of the torsion spring, while the side plate 6 moves upward under the elastic force of the spring 10, and moves upward with the upper side plate 12 and the upper plate 14.

[0094] During the upward movement of the side plates 6, the upper side plates 12 and the upper plate 14, the heat-conducting mesh 2 at the upper part is separated from the upper end surface 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, so that the connecting mesh 3 is opened. Until the spring 10 is extended to its original length, the upper heat-conducting mesh 2 rises to the highest state, and the connecting mesh 3 is also in a fully expanded state.

[0095] Then the upper plate 14 can be removed upwards, and the cast mold can be left to foam. During foaming, more pores will be produced in the cast raw material, and their height will increase upward, gradually wrapping the connecting net 3 and the upper heat-conducting net 2 inside the raw material. After the foaming is completed, it is left to dry and then high-temperature calcination can be carried out.

[0096] During the actual production, the applicant found that when the upper heat-conducting net 2 and the inner plate 13 are attached together and move upward, the raw material will adhere to the bonding surface of the heat-conducting net 2 and the inner plate 13. The main reason is: since the heat-conducting net 2 is a grid-like structure, it is attached to the inner plate 13, and the gap between the two is relatively small. In addition to the mesh of the heat-conducting net 2, the raw material will enter the mesh and the gap between the two, and produce adhesion between the two, so that the raw material adheres to the bonding surface of the heat-conducting net 2 and the inner plate 13, and the adhered raw material will move upward with the bonding surface of the heat-conducting net 2 and the inner plate 13, causing the raw material to adhere to the raw material. To solve this problem, in this application, a damping hole 17 is also opened 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 side wall of the sliding part 16, so that a seal can be formed between the side plate 6 and the inner cavity of the sliding part 16.

[0097] When the upper plate 14 is removed upward, the upper plate 14 can be quickly lifted up, and the upper plate 14 will move upward with the inner plate 13, and the side plate 6, the upper side plate 12 and the upper heat-conducting net 2 will also move upward under the elastic force of the spring 10. However, when the side plate 6 slides upward inside the sliding portion 16, a small amount of air can enter the damping hole 17, and a negative pressure will be generated inside the sliding portion 16, which slows 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 net 2 is obviously slower than that of the inner plate 13, so that the differential rise of the upper heat-conducting net 2 and the inner plate 13 can be achieved. In the initial stage of the rise of the upper plate 14, the inner plate 13 can be separated from the upper heat-conducting net 2, and the gap between the inner plate 13 and the heat-conducting net 2 increases, which can reduce the adhesion of the raw materials. At the same time, the upper heat-conducting net 2 slowly rises, and the raw materials in the mesh will also fall downward, which can solve the problem of raw materials adhering to the bonding surface of the heat-conducting net 2 and the inner plate 13.

[0098] In addition to the above structure to fix the position of the upper plate 14, negative pressure can also be used to prevent the movement of the limit plate 7. In a further embodiment, Figure 9-15 As shown, the limit plate 7 is still designed as an L-shaped structure, and the bottom of the limit plate 7 is rotatably mounted on both sides of the bottom plate 4 through a first rotating shaft, and a torsion spring is installed on the outer side of the first rotating shaft. A telescopic plate 22 is rotatably mounted on a side wall of the limit plate 7 close to 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 limit block (not shown in the figure) is fixedly installed at the opening of the outer plate 222. The limit block limits the sliding plate 221 to prevent the sliding plate 221 from falling off from the inner cavity of the outer plate 222.

[0099] A horizontal plate 23 (such as Fig. 9As shown, the transverse plate 23 may not be provided, and the upper end of the telescopic plate 22 is rotatably connected to the inner side of the top of the limiting plate 7. The principle is the same as that of the transverse plate. In this embodiment, the structure of the transverse plate 23 is described in detail. The transverse plate 23 is vertically arranged on the side of the limiting plate 7. The ends of the sliding plate 221 and the outer plate 222 that are away from each other are respectively rotatably connected to the transverse plate 23 and the upper end surface of the extension plate 61 through the second rotation axis. The bottom of the sliding part 16 is fixedly installed with an exhaust pipe 24, and the exhaust pipe 24 is provided with an exhaust hole. The air inside the sliding part 16 can be sucked away by an exhaust device such as an air pump, so that a negative pressure is generated inside the sliding part 16. As the pressure continues to drop, under the action of the air pressure, the spring 10 will be compressed, and the upper plate 14, the side plate 6, the upper side plate 12 and the heat conducting net 2 located at the upper part will move downward together. During the movement, the sliding plate 221 slides outward in the outer plate 222, and the telescopic plate 22 extends. As the spring 10 continues to compress, when the telescopic plate 22 is extended to the longest state, the telescopic plate 22 can rotate with the limit plate 7. When the spring 10 is compressed to the casting height of the mold, the air extraction can be stopped and the air extraction hole can be closed. In this state, the telescopic plate 22 remains parallel to the side of the limit plate 7, and the side of the limit plate 7 and the telescopic plate 22 are both in a vertical state.

[0100] A plurality of pads 20 are placed between the upper end of the limit plate 7 and the upper plate 14. The height of the pads 20 is set according to the distance between the limit plate 7 and the upper plate 14 when designing the mold of the foamed thermal insulation ceramic plate, and the pads 20 are reusable. The pads 20 can be fixed to the limit plate 7 and the upper plate 14 by bolts, and the pads 20 can also be set between the limit plate 7 and the upper plate 14 by magnetic attraction (for example, the pads 20 are made of strong magnetic material), and the sides of the limit plate 7 and the upper plate 14 are made of magnetic metal. The function of the pads 20 is to limit the movement of the upper plate 14. When the mold is placed horizontally to cast the raw materials, the upper plate 14 will not move, so that the designed casting height remains unchanged.

[0101] After pouring is completed, the pad 20 can be removed and the exhaust 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 net 2 located on the upper part move up and down together. At the same time, the limit plate 7 is rotated outward and opened under the action of the torsion spring, so that the upper plate 14 and the inner plate 13 can be removed.

[0102] In a further embodiment, an upper fixing plate 18 is fixedly mounted on the upper end surface of the upper plate 14, and a sliding cavity is formed between the upper fixing plate 18 and the upper plate 14. Fig.14 and Fig.15As shown, the two sides of the sliding cavity near the limit plate 7 are open structures, and a slide 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 slide plate 19 located outside the sliding cavity. A transition plate 21 is rotatably installed on the upper end of the vertical plate through a third rotating shaft. A plurality of pads 20 are placed on the upper end of the transition plate 21, and the pads 20 can be placed freely. Threaded holes are provided on the upper end of the limit plate 7, the pad 20, and the transition plate 21, and the three can be installed together using bolts.

[0103] In this embodiment, when the air extraction hole is opened and the inner cavity of the sliding part 16 enters the gas, the spring 10 extends upward, and moves the upper plate 14, the inner plate 13, the side plate 6, the extension plate 61, the upper side plate 12 and the heat conducting net 2 located at the upper part upward. At the same time, the limit plate 7 rotates outward under the action of the torsion spring, as shown in FIG. Fig.11 As shown by the middle arrow a, the telescopic plate 22 moves upward.

[0104] When the limit plate 7 rotates outward, the upper end of the limit plate 7 will slide outward from the sliding cavity with the slide plate 19. Fig.11 As shown by the middle arrow b, the limit plate 7 will also move the upper plate 14 and the inner plate 13 upwards. Fig.11 As shown by the middle arrow c, the angle at which the limit plate 7 starts to rotate outward is always limited by the length of the telescopic plate 22. When the limit plate 7 rotates outward to a position that does not affect the upward removal of the upper plate 14, the limit plate 7 can stop rotating, and the torsion force of the torsion spring on the limit plate 7 disappears. At this time, the side plate 6, the extension plate 61, the upper side plate 12 and the heat conductive net 2 located at the upper part can continue to rise under the elastic force of the spring 10, while the telescopic plate 22 shortens and contracts.

[0105] like Fig.17 The simulation diagram of the motion state, in this embodiment, when the limiting plate 7 is in the vertical state, 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 (i.e. Fig.17 Points O, A and C are shown to be on the same straight line).

[0106] In this embodiment, the angle between the straight line formed by point O, point A and point C and the horizontal plane is as small as possible to be less than 45°, mainly because when the limit plate 7 rotates upward, the distance moved by point C in the vertical direction is greater than the distance moved in the horizontal direction.

[0107] When the limit plate 7 starts to rotate outward, the distance between OC is the movement radius at the edge of the slide plate 19. Within the unit length, the rising movement trajectory of point A and the movement trajectory of point C can be approximately the same, that is: within the unit length, the rising trajectory of point A can be approximately regarded as an upward rotational motion with point O as the center, and the rotation radius is 0A.

[0108] Furthermore, since the points O, A and C are on the same straight line, when the limit plate 7 rotates, the rotation angles of OA and OC are considered to be the same.

[0109] The arc length is calculated by the formula:

[0110]

[0111] Where:

[0112] n is the center angle 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 movement, within a unit length, the rising distance of point C is slightly greater than the rising distance of A.

[0115] In fact, when point A moves upward, the telescopic plate 22 also moves upward, and the rotation angle of the limit plate 7 is greater than the angle of the upward movement of point A, that is, the arc length of the movement of point C is greater than the movement path of point A; during the initial movement, the rising distance of point C is greater than the rising distance of point A. In other words, the rising distance of the upper plate 14 and the inner plate 13 is greater than the upward movement distance of the side plate 6, the extension plate 61, the upper side plate 12, and the heat-conducting net 2 located at the top. In the same time, the speed of the upper plate 14 and the inner plate 13 is greater than the speed of the side plate 6, the extension plate 61, the upper side plate 12, and the heat-conducting net 2 located at the top.

[0116] When the limit plate 7 starts to rotate outward (i.e. upward), the upper end of the limit plate 7 will move outward in the sliding cavity with the slide plate 19, and will move the upper plate 14 and the inner plate 13 upward synchronously. At the same time, the spring 10 will move the side plate 6, the extension plate 61, the upper side plate 12 and the heat-conducting net 2 located at the upper part upward synchronously. During the initial movement, the speed of the inner plate 13 moving upward is greater than the speed of the heat-conducting net 2 moving upward. The inner plate 13 will separate from the heat-conducting net 2, and the separation and ascent between the two will be achieved. When leaving the casting surface, the gap between the inner plate 13 and the heat-conducting net 2 will increase, which can prevent the material from adhering to the contact surface between the two.

[0117] As the limit plate 7 continues to rotate, when the limit plate 7 rotates to a state close to the vertical, the rising speed and distance of the upper plate 14 and the inner plate 13 will decrease significantly, but at this time the upper heat-conducting net 2 and the inner plate 13 have already left the casting surface, so the subsequent movement does not affect the molding of the entire mold.

[0118] When the limiting plate 7 is fully opened, the bolts and the backing plate 20 can be removed, and the upper plate 14 can be removed, and the poured raw materials can be foamed.

[0119] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foam thermal insulation ceramic plate forming mold, characterized in that: include: A bottom plate (4), two symmetrically arranged sliding parts (16) are fixedly mounted on the bottom plate (4), a side plate (6) capable of sliding up and down is mounted on the upper end of the sliding part (16), an extension plate (61) is fixedly mounted on the outer side of the side plate (6), a spring (10) is fixedly mounted between the extension plate (61) and the bottom plate (4), the spring (10) is used to provide an upward elastic force to the extension plate (61), and the upper edges of the two sliding parts (16) are used to place the heat conducting net (2); The end plates (15) are located at the front and rear sides of the bottom plate (4), the front end plate (15) is connected to the bottom plate (4) by bolts, and the rear end plate (15) is fixedly connected to the rear side of the bottom plate (4); A magnetic attraction block (11) is adsorbed together with the upper edge of the sliding portion (16) and is used to fix the heat-conducting net (2) located at the bottom; An upper side plate (12) is plugged together with the upper end of the side plate (6) to provide a foaming space for the foamed thermal insulation ceramic plate; The upper plate (14) has a lower side in contact with the top of the upper side plate (12), and when under pressure, the upper plate (14) can move downward with the upper side plate (12) and the side plate (6); The limiting plate (7) is rotatably mounted at the bottom on the bottom plate (4). After the upper plate (14) moves downward, the upper plate (14) is limited to form a pouring space for the foamed thermal insulation ceramic plate.

2. The foam thermal insulation ceramic plate forming mold according to claim 1, characterized in that: It also includes an inner plate (13) fixedly mounted on the bottom of the upper plate (14), and the distance between the inner plate (13) and the upper side plate (12) is the same as the height of the inner plate (13). A convex strip is fixedly mounted on the upper end of the side plate (6), and a slot matching the convex strip is formed 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 net (2) located at the top.

3. The foamed thermal insulation ceramic plate forming mold according to claim 2, characterized in that: The limiting plate (7) is an L-shaped structure. The bottom of the limiting plate (7) is rotatably mounted on both sides of the bottom plate (4) via a first rotating shaft. Vertical plates (5) are also fixedly mounted on both sides of the bottom plate (4). When the limiting plate (7) is rotated to a vertical state, it abuts against the outer sides of the vertical plates (5). A waist-shaped hole (8) is formed on the limiting plate (7), a threaded rod (9) is fixedly mounted 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), and a threaded cap is rotatably mounted on one end of the threaded rod (9) located outside the waist-shaped hole (8); By rotating the threaded cap, the limiting plate (7) can be rotated toward the side close to the vertical plate (5) until the limiting plate (7) and the vertical plate (5) are fitted together.

4. The foam thermal insulation ceramic plate forming mold according to claim 3, characterized in that: The bottom of the limit plate (7) is rotatably mounted on both sides of the bottom plate (4) via a first rotating shaft, and a torsion spring is mounted on the outer side of the first rotating shaft; Vertical plates (5) are fixedly mounted on both sides of the bottom plate (4); when the limit plates (7) are rotated to a vertical state, they abut against the outer sides of the vertical plates (5); A telescopic plate (22) is rotatably mounted on a side wall of the limiting plate (7) close to 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 following the side plate (6), the telescopic plate (22) gradually extends, and the telescopic plate (22) is used to rotate with the limiting plate (7); A plurality of pads (20) are placed between the upper end of the limiting plate (7) and the upper plate (14).

5. The foamed thermal insulation ceramic plate forming mold according to claim 4, characterized in that: An upper fixed plate (18) is fixedly disposed on the upper end surface of the upper plate (14), a sliding cavity is formed between the upper fixed plate (18) and the upper plate (14), and a sliding plate (19) capable of sliding outward is symmetrically mounted in the sliding cavity; A transition plate (21) is rotatably mounted on the upper end of one side of the slide plate (19) located outside the sliding cavity, a plurality of pads (20) are placed above the transition plate (21), and the upper end of the limit plate (7) is connected to the pad (20) and the transition plate (21) by bolts.

6. The foam thermal insulation ceramic plate forming mold according to claim 5, characterized in that: A damping hole (17) is provided at the bottom of the sliding portion (16).

7. A method for forming a foamed thermal insulation ceramic plate, using a foamed thermal insulation ceramic plate forming mold according to any one of claims 1 to 6, characterized in that: The steps include: The side plate (6) and the sliding part (16) are mounted together, and the lower heat-conducting net (2) is placed on the upper end of the sliding part (16) and fixed by adsorption using a magnetic block (11); Placing the upper heat-conducting net (2) on the upper end of the side plate (6) and pressing and fixing it with the upper side plate (12); The upper plate (14) is moved downward by using a pressure device, and the spring (10) is compressed. When the upper plate (14) moves downward, it will slide the side plate (6) downward on the sliding part (16), and the upper heat-conducting net (2) and the lower heat-conducting net (2) are brought closer to each other; When sliding to a preset height, the limiting plate (7) is rotated to a vertical state, and the limiting plate (7) and the upper end of the upper plate (14) are in contact, so as to limit the position of the upper plate (14), thereby forming a casting cavity; The front end plate (15) is removed to open the mold, and the mold is placed vertically to pour slurry into the pouring cavity. After the pouring is completed, the front end plate (15) is installed. The limit plate (7) is rotated outwards, and the side plate (6) and the upper plate (14) are raised under the action of the spring (10) to reserve a foaming space, and the foam is left to stand.

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