A microwave heating system for rapid curing molding of foamed sheet

Abstract

A microwave heating system for rapid curing of foamed boards relates to the field of foamed board processing technology. It is applied to stimulate the reaction of the slurry during the curing process of foamed boards, solving the problem of mold collapse caused by excessively low temperatures. The system includes a guide rail and a mold-standing device, a heating device, and a curing chamber arranged sequentially along the guide rail. The mold-standing device has guide rods and a mold-standing assembly inside. The mold-standing assembly includes a row of templates, with the front template fixedly connected to the guide rod, and the other templates slidably connected to the guide rod. The side walls of the templates have U-shaped frames, and each pair of adjacent templates is connected together by connectors. The U-shaped frames and the two adjacent templates form a casting cavity for pouring the foamed slurry. A hopper is placed on top of the mold-standing device. The inner wall of the heating device is made of metal, and the inner side of the heating device includes a microwave heating element, a base, and a turntable. The turntable is rotatably mounted on top of the base. This invention can heat the poured foamed slurry to facilitate one-time curing.

Description

Technical Field

[0001] This invention relates to the field of foam board processing technology, specifically a microwave heating system for rapid curing and molding of foam boards. Background Technology

[0002] Foamed, low-density boards (such as door core boards, insulation boards, and partition boards) are increasingly used in building decoration. Among them, the door core board in fire doors is a core technology in the door industry, and its importance is self-evident. Currently, most door core boards use inorganic cementitious materials and binders as the main raw materials. Foaming liquid is added to reduce density, and modifiers and other additives are added before curing and shaping. In door core board production, the inorganic cementitious material is mixed with binders or water, and then a large amount of foaming solvent is added to reduce density, reducing the weight of the door while ensuring fire safety. Modifiers and short fibers are added, and after thorough mixing, the mixture is poured into the door core board mold cavity. It requires a certain amount of time to cure and solidify. If the reaction time of the inorganic cementitious material and binder is too long during the curing time, the foaming liquid will crack, causing mold collapse and failing to reduce density, resulting in a large number of defective products. Mold collapse is particularly severe in cold winter weather. Therefore, it is crucial to be able to quickly activate the reaction of the slurry after mixing. Summary of the Invention

[0003] The purpose of this invention is to provide a microwave heating system for rapid curing and molding of foamed boards, which is applied to stimulate the reaction of the slurry during the curing process of foamed boards and solves the problem of mold collapse caused by excessively low temperature.

[0004] The technical solution adopted by this invention to solve its technical problem is: a microwave heating system for rapid curing and molding of foamed boards, including a guide rail and a mold-erecting device, a heating device, and a curing chamber arranged sequentially along the guide rail. The mold-erecting device is a rectangular hollow structure. The inner side of the mold-erecting device has a guide rod and a mold-erecting assembly. The mold-erecting assembly includes a row of templates, which are arranged sequentially backward with the front template as the center. The front template is fixedly connected to the guide rod, and the other templates are slidably connected to the guide rod. The side wall of the template has a U-shaped frame. Each pair of adjacent templates is connected together by a connector. The mold-erecting device has a driving mechanism that drives the relative movement of two adjacent templates. The driving mechanism functions as follows: When the first template in each pair of adjacent templates contacts the U-shaped frame on the side wall of the second template, the U-shaped frame and the two adjacent templates form a casting cavity for pouring foamed slurry. A hopper is placed on the top of the vertical mold device, and the bottom of the hopper has a conduit extending into the vertical mold device. The inner wall of the heating device is made of metal, and the inner side of the heating device has a microwave heating element, a base, and a turntable. The base is located at the bottom of the heating device, and the turntable is rotatably mounted on the top of the base. Side doors are provided on the front and rear walls of the heating device. After opening the side doors, the vertical mold device can be moved onto the turntable inside the heating device or moved out of the turntable into the curing chamber. The microwave heating element heats the foamed slurry in the vertical mold assembly using the microwave heating principle.

[0005] Furthermore, the hopper is slidably disposed on top of the vertical mold device.

[0006] Furthermore, the guide rods are four in number and are respectively located at the four vertices of the rectangle, and the top and bottom of the template have sleeves that are slidably connected to the corresponding guide rods.

[0007] Furthermore, the connector includes two connecting rods that are arranged crosswise and hinged together. One end of the connecting rod is hinged to the first template of two adjacent templates, and the other end of the connecting rod is slidably connected to the second template of two adjacent templates.

[0008] Furthermore, the driving mechanism includes a moving motor and a chain drive mechanism. The moving motor is fixed to the bottom of the mold-standing device, and the chain drive mechanism includes a driving sprocket, a driven sprocket, and a chain. The driving sprocket is fixed to the output end of the moving motor, and the bottom of the mold plate at the rear end has a connecting block, which is fixedly connected to the chain.

[0009] Furthermore, the side wall of the template has a hinge shaft and a sliding groove arranged vertically. The hinge shaft is used to hingely connect with one end of the connecting rod, and the sliding groove is used to slide with the other end of the connecting rod.

[0010] Furthermore, the bottom of the mold-erecting device has pulleys that move along guide rails.

[0011] Furthermore, the bottom of the turntable has a rotating shaft that is rotatably connected to the base, and the base has a rotary motor that drives the rotating shaft to rotate.

[0012] The beneficial effects of the present invention are: the present invention realizes the pouring, heating and curing of foaming slurry in sequence by setting up a mold-standing device, a heating device and a curing chamber along the guide rail, with each process connected in sequence; the structure of the mold-standing device is conducive to both adding foaming slurry and demolding after the foaming slurry has cured. Attached Figure Description

[0013] Figure 1 This is a top view of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the mold-erecting device;

[0015] Figure 3 This is the main view of the mold assembly;

[0016] Figure 4 A 3D model of the template;

[0017] Figure 5 A top view of the pouring of foamed slurry after the template of the vertical mold assembly is attached;

[0018] Figure 6 This is a front view of the heating device;

[0019] Figure 7 This is a schematic diagram of the internal structure of the heating device;

[0020] In the diagram: 1 guide rail, 2 vertical mold device, 21 strip hole, 22 guide rod, 23 template, 231 hinge shaft, 232 slide groove, 233 rod sleeve, 234 connecting block, 24 U-shaped frame, 25 connecting rod, 26 pallet, 27 moving motor, 28 chain drive mechanism, 29 support, 3 hopper, 31 discharge port, 32 conduit, 4 heating device, 41 side door, 42 transformer, 43 magnetron, 44 rectifier, 45 base, 46 turntable, 47 rotary motor, 48 rotating shaft, 49 pulley, 5 curing chamber, 6 foaming slurry. Detailed Implementation

[0021] like Figures 1 to 7 As shown, the present invention includes a guide rail 1, a mold erecting device 2, a heating device 4, and a curing chamber 5. The present invention will be described in detail below with reference to the accompanying drawings.

[0022] like Figure 1As shown, a microwave heating system for rapid curing and molding of foamed boards includes a guide rail 1 and a mold-erecting device 2, a heating device 4, and a curing chamber 5 arranged sequentially along the guide rail 1. Figure 2 As shown, the mold-erecting device 2 is a hollow rectangular structure. The inner side of the mold-erecting device 2 has guide rods 22 and mold-erecting components, such as... Figure 3 As shown, the mold assembly includes a row of templates 23, arranged sequentially backwards from the front template 23. The front template 23 is fixedly connected to the guide rod 22, while the other templates 23 are slidably connected to the guide rod 22. There are four guide rods 22, each positioned at one of the four vertices of a rectangle. Figure 4 As shown, the top and bottom of the template 23 have sleeves 233 that are slidably connected to the corresponding guide rods 22. The sleeves 233 on the front template 23 are fitted onto the guide rods 22 and are fixedly connected to the guide rods 22, while the sleeves 233 on the other templates 23 are fitted onto the guide rods 22 and are slidably connected to the guide rods 22.

[0023] like Figure 4 As shown, the sidewall of template 23 has a U-shaped frame 24. Each pair of adjacent templates 23 is connected by a connector, which includes two intersecting and hinged connecting rods 25. One end of each connecting rod 25 is hinged to the first template 23 of the two adjacent templates 23, and the other end is slidably connected to the second template 23 of the two adjacent templates 23. The sidewall of template 23 has a hinge shaft 231 and a sliding groove 232 arranged vertically. The hinge shaft 231 is hinged to one end of the connecting rod 25, and the sliding groove 232 is slidably connected to the other end of the connecting rod 25. One end of the connecting rod 25 has a circular hole through which the hinge shaft 231 passes, and the other end of the connecting rod 25 has a slider slidably connected to the sliding groove 232. The vertical mold assembly 2 has a drive mechanism that drives two adjacent mold plates 23 to move relative to each other. Under the action of the drive mechanism, when the first mold plate 23 contacts the U-shaped frame 24 on the side wall of the second mold plate 23, the U-shaped frame 24 and the two adjacent mold plates 23 form a casting cavity for pouring foamed slurry. The drive mechanism includes a moving motor 27 and a chain drive mechanism 28. The moving motor 27 is fixed to the bottom of the vertical mold assembly 2. The chain drive mechanism 28 includes a driving sprocket, a driven sprocket, and a chain. The driving sprocket is fixed to the output end of the moving motor 27. The bottom of the last mold plate 23 has a connecting block 234, which is fixedly connected to the chain. When the moving motor 27 is working, it drives the connecting block 234 to move through the chain drive mechanism 28. The movement of the connecting block 234 causes the last mold plate 23 to move towards the frontmost mold plate 23, or to move the last mold plate 23 away from the frontmost mold plate 23. Furthermore, the movement of the connecting block 234 causes the rearmost template 23 to move towards the frontmost template 23, so that after the template 23 contacts the U-shaped frame 24, as... Figure 3As shown, the U-shaped frame 24 and the two adjacent templates 23 form a pouring cavity for the foamed slurry, as... Figure 5 As shown, at this point, the well-mixed foaming slurry 6 can be added into the casting cavity.

[0024] To facilitate the addition of foaming slurry into the casting cavity, such as Figure 2 As shown, a hopper 3 is placed on top of the mold-standing device 2. The hopper 3 is slidably mounted on top of the mold-standing device 2. The bottom of the hopper 3 has a conduit 32 extending into the mold-standing device 2, and the bottom of the hopper 3 has a feeding port 31 communicating with the conduit 32. The foaming slurry in the hopper 3 passes through the feeding port 31 into the conduit 32, and then flows into the casting cavity through the conduit 32. Moving the hopper 3 makes it easy to move the conduit 32 above the casting cavity for easy casting.

[0025] like Figure 6 , Figure 7 As shown, the inner wall of the heating device 4 is made of metal to facilitate microwave reflection. The inner side of the heating device 4 includes a microwave heating element, a base 45, and a turntable 46. The microwave heating element comprises a transformer 42, a rectifier 44, and a magnetron 43 connected in sequence. The microwave heating element and its heating principle are existing technologies and will not be described in detail here. The base 45 is located at the bottom of the heating device 4, and the turntable 46 is rotatably mounted on top of the base 45. Side doors 41 are provided on both the front and rear walls of the heating device 4. After opening the side doors 41, the mold assembly 2 can be moved onto the turntable 46 inside the heating device 4 or moved from the turntable 46 into the curing chamber 5. The microwave heating element heats the foaming slurry inside the mold assembly using the microwave heating principle. The bottom of the turntable 46 has a rotating shaft 48 rotatably connected to the base 45, and the base 45 has a rotary motor 47 that drives the rotating shaft 48 to rotate. After the rotary motor 47 is started, it drives the rotating shaft 48 to rotate, which in turn drives the turntable 46 to rotate. The rotation of the turntable 46 facilitates the curing and molding of the foaming slurry in the mold-standing device. The bottom of the mold-standing device 2 has a pulley 49, which moves along the guide rail 1, thereby facilitating the movement of the mold-standing device 2 along the guide rail 1.

[0026] The method of using this invention is described below:

[0027] (1) The template inside the movable formwork device moves so that one of the two adjacent templates contacts the U-shaped frame on the adjacent template to form a casting cavity;

[0028] (2) Pour the mixed foamed slurry into the casting cavity;

[0029] (3) After the casting is completed, open the side door on the front of the heating device, transfer the mold to the heating device, then close the side door and turn on the microwave heating element to heat the foaming slurry in the mold; at high temperature, the foaming slurry can be cured quickly.

[0030] (4) After heating for a period of time, open the side door at the back of the heating device and transfer the mold to the curing room for curing until the foaming slurry is completely solidified and formed.

[0031] This invention achieves the sequential pouring, heating, curing, and curing of foamed slurry by setting up a mold-standing device, a heating device, and a curing chamber along the guide rail, with each process seamlessly connected. The structure of the mold-standing device facilitates both the addition of foamed slurry and the demolding after the foamed slurry has cured.

Claims

1. A microwave heating system for rapid curing and molding of foamed boards, characterized in that, The device includes a guide rail and a mold-standing device, a heating device, and a curing chamber arranged sequentially along the guide rail. The mold-standing device is a rectangular hollow structure. The mold-standing device has a guide rod and a mold-standing assembly on its inner side. The mold-standing assembly includes a row of templates, which are arranged sequentially from the front template to the rear. The front template is fixedly connected to the guide rod, while the other templates are slidably connected to the guide rod. The side wall of the template has a U-shaped frame. Each pair of adjacent templates is connected together by a connector. The mold-standing device has a driving mechanism that drives the relative movement of two adjacent templates. Under the action of the driving mechanism, when the first template of each pair of adjacent templates contacts the U-shaped frame on the side wall of the second template, the U-shaped frame and the two adjacent templates form a casting cavity for pouring foamed slurry. The top of the mold-standing device is equipped with a hopper, and the bottom of the hopper has a conduit extending into the mold-standing device. The inner wall of the heating device is made of metal, and the inner side of the heating device has a microwave heating element, a base, and a turntable. The base is located at the bottom of the heating device, and the turntable is rotatably mounted on the top of the base. The front and rear walls of the heating device are equipped with side doors. After opening the side doors, the mold-standing device can be moved onto the turntable inside the heating device or moved out of the turntable into the curing chamber. The microwave heating element heats the foaming slurry in the mold-standing assembly using the microwave heating principle.

2. The microwave heating system for rapid curing and molding of foamed boards according to claim 1, characterized in that, The hopper is slidably mounted on top of the vertical mold device.

3. The microwave heating system for rapid curing and molding of foamed boards according to claim 1, characterized in that, The guide rods are four in number and are respectively located at the four vertices of the rectangle. The top and bottom of the template have sleeves that are slidably connected to the corresponding guide rods.

4. The microwave heating system for rapid curing and molding of foamed boards according to claim 1, characterized in that, The connector includes two connecting rods that are arranged crosswise and hinged together. One end of the connecting rod is hinged to the first template of two adjacent templates, and the other end of the connecting rod is slidably connected to the second template of two adjacent templates.

5. A microwave heating system for rapid curing and molding of foamed boards according to claim 1, characterized in that, The driving mechanism includes a moving motor and a chain drive mechanism. The moving motor is fixed to the bottom of the mold-standing device. The chain drive mechanism includes a driving sprocket, a driven sprocket, and a chain. The driving sprocket is fixed to the output end of the moving motor. The bottom of the mold at the rear end has a connecting block, which is fixedly connected to the chain.

6. A microwave heating system for rapid curing and molding of foamed boards according to claim 4, characterized in that, The template has a hinge shaft and a sliding groove arranged vertically on its side wall. The hinge shaft is used to hingely connect with one end of the connecting rod, and the sliding groove is used to slide with the other end of the connecting rod.

7. The microwave heating system for rapid curing and molding of foamed boards according to claim 1, characterized in that, The bottom of the mold-erecting device has pulleys that move along guide rails.

8. The microwave heating system for rapid curing and molding of foamed boards according to claim 1, characterized in that, The turntable has a rotating shaft at its bottom that is rotatably connected to the base, and the base has a rotary motor that drives the rotating shaft to rotate.

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