Batch artificial stone plate microwave heating curing equipment

Abstract

The utility model discloses a batch artificial stone plate microwave heating curing device which comprises a machine frame and a microwave curing cavity installed on the machine frame, a plurality of layers of conveying devices and microwave emitting assemblies are arranged in the microwave curing cavity, the conveying devices are arranged in the height direction of the microwave curing cavity, and the microwave emitting assemblies are arranged on the conveying devices. The conveying device is used for conveying and bearing artificial stone plates in the microwave curing cavity; the microwave emission assembly comprises a microwave generator, a waveguide tube and a uniform distribution component and is used for generation, transmission and uniform distribution of microwaves. By adopting the microwave heating and curing equipment for the batch artificial stone plates, the uniform and efficient curing of the artificial stone plates can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial stone production and manufacturing, in particular to microwave heating and curing equipment for batch artificial stone slabs. Background Art

[0002] Artificial stone usually uses unsaturated polyester resin as a binder, to which inorganic powder materials such as silica sand, glass powder and natural stone powder are added, along with appropriate amounts of additives and colorants. The raw materials are stirred, pressed into shape using negative pressure vacuum and high-frequency vibration, and then heated and compacted.

[0003] Compared with traditional heating fan circulation heating curing and electric heating high-temperature oil heat exchanger heating curing, microwave heating curing has the advantages of high efficiency and environmental friendliness. In the current microwave heating curing equipment, a curing chamber is usually fixedly set, a microwave generating device is set on the top of the curing chamber, and a lifting base is set at the bottom of the curing chamber. The artificial stone slabs formed by high-frequency vibration pressing are placed on the lifting base. Driven by the lifting base, the artificial stone slabs enter the curing chamber for microwave heating curing. The existing microwave heating curing equipment has low working efficiency. During the curing process, due to the fixed position of the microwave generating device, the artificial stone slabs at different distances from the microwave generating device in the curing chamber may have uneven curing degrees. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a microwave heating and curing device for batch artificial stone slabs, so as to improve the uniformity and efficiency of microwave curing.

[0005] In order to solve the above technical problems, the utility model provides a batch of artificial stone slabs microwave heating curing equipment, including a frame and a microwave curing cavity installed on the frame, wherein a multi-layer conveying device and a microwave emitting assembly are arranged in the microwave curing cavity, and the conveying device is arranged along the height direction of the microwave curing cavity, and is used to convey and carry the artificial stone slabs in the microwave curing cavity;

[0006] The microwave emitting assembly comprises a microwave generator, a waveguide and a uniform distribution member, and is used for the generation, transmission and uniform distribution of microwaves.

[0007] As an improvement of the above scheme, a microwave feeding port is provided at the upper or lower part of the microwave curing cavity, the inlet end of the waveguide is connected to the microwave generator, the outlet end of the waveguide is connected to the uniformly distributed component, and is connected to the microwave curing cavity through the microwave feeding port.

[0008] As an improvement of the above solution, the uniform distribution component is a uniform distribution tube, and the end surface of the uniform distribution tube on the side connected to the microwave curing cavity is provided with a plurality of uniform distribution holes that are evenly distributed.

[0009] As an improvement of the above solution, the cross-sectional area of ​​the uniformly distributed holes is S1, the number is N1, and the cross-sectional area of ​​the waveguide is S2, which satisfies the following relationship: S1×N1=S2×(1±0.5).

[0010] As an improvement of the above scheme, the power of the microwave generator is 10kW to 100kW, and the microwave frequency is 500MHz to 2000MHz;

[0011] The temperature of the microwave curing cavity is 50° C. to 100° C., and the curing time is 3 min to 30 min.

[0012] As an improvement of the above scheme, the microwave generator performs intermittent microwave curing. After the microwave generator irradiates the artificial stone slab with microwaves for 10s to 180s, it stops irradiating with microwaves for 10s to 180s; it irradiates with microwaves again for 10s to 180s, and the cycle continues until the cumulative irradiation time reaches the curing time.

[0013] As an improvement of the above scheme, it also includes a driving component for driving the conveying device to move, the driving component includes a transmission device and a motor arranged on one side of the conveying device on each layer, the conveying device on each layer includes a plurality of conveying rollers, the transmission device on each layer is respectively connected to the motor and the conveying rollers on that layer, and the motor drives the conveying device on each layer to move independently through the transmission device.

[0014] As an improvement on the above scheme, it also includes a driving component for driving the conveying device to move, the driving component includes a motor, a first transmission device and multiple second transmission devices, the first transmission device is horizontally arranged on one side of one layer of the conveying device, and the multiple second transmission devices are respectively longitudinally arranged between multiple layers of the conveying devices; each layer of the conveying device includes multiple conveying rollers, each of the second transmission devices is connected to one column of conveying rollers in the same vertical direction, and is used to drive the conveying rollers of different layers in the same vertical direction to rotate synchronously, the first transmission device is connected to one layer of the conveying rollers, and is used to drive the conveying rollers of this layer to move synchronously, and the motor drives the conveying device of each layer to move synchronously through the first transmission device and the second transmission device.

[0015] The implementation of this utility model has the following beneficial effects:

[0016] The microwave heating and curing equipment for batch artificial stone slabs provided by the utility model has a simple structure. The microwaves emitted by the microwave generator are transmitted through the waveguide and then emitted through the uniformly distributed component. The emission of the microwaves is more directional and more uniform, which is beneficial to the uniformity of microwave distribution in the microwave curing cavity, thereby improving the curing uniformity of batch artificial stone slabs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a microwave heating and curing device for batch artificial stone slabs provided by the utility model;

[0018] Figure 2 It is a top view of the conveying assembly provided by the utility model;

[0019] Figure 3 It is a structural schematic diagram of a microwave transmitting component provided by the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0021] like Figure 1 to Figure 3 As shown, an embodiment of the utility model provides a microwave heating and curing device for batch artificial stone slabs, including a frame 1 and a microwave curing cavity 2 installed on the frame 1, a multi-layer conveying device 21 and a microwave emitting component 22 are provided in the microwave curing cavity 2, and the conveying device 22 is arranged along the height direction of the microwave curing cavity 2, and is used for conveying and carrying the artificial stone slabs in the microwave curing cavity 2.

[0022] The microwave emitting assembly 22 includes a microwave generator 221, a waveguide 222 and a uniform distribution member 223, which is used for transmission and uniform distribution of microwaves. The microwave generator 221 performs intermittent microwave curing.

[0023] A microwave feed port is provided at the upper or lower part of the microwave curing cavity 2, the inlet end of the waveguide tube 222 is connected to the microwave generator 221, the outlet end of the waveguide tube 222 is connected to the uniform distribution member 223, and is connected to the microwave curing cavity 2 through the microwave feed port. The materials of the waveguide tube and the uniform distribution member are both selected from metal materials with strong microwave reflection, specifically, they can be made of one or a combination of stainless steel and aluminum. The microwaves emitted by the microwave generator 221 propagate linearly, which may cause uneven distribution of microwaves in the microwave curing cavity. The waveguide tube 222 is used to lead out the microwaves generated by the microwave generator 221 with low loss to improve the heating efficiency, and the uniform distribution member 223 is used to evenly distribute the microwaves to improve the curing uniformity. Preferably, the waveguide tube 222 can be a hollow curved tube structure to reduce the floor space of the microwave emission assembly, thereby streamlining the equipment volume.

[0024] The uniform distribution member 223 is a uniform distribution tube. A side of the uniform distribution tube connected to the microwave curing cavity 2 is provided with a plurality of uniform distribution holes 224 that are evenly distributed. The shape of the uniform distribution holes 224 can be one or a combination of circular, square, and triangular.

[0025] Preferably, the cross-sectional area of ​​the uniformly distributed holes 224 is S1, the number is N1, and the cross-sectional area of ​​the waveguide 222 is S2, which satisfies the following relationship: S1×N1=S2×(1±0.5). If S1×N1<0.5S2, the microwaves entering the microwave curing cavity will be too concentrated, which is not conducive to the uniform distribution of microwaves in the microwave curing cavity; if S1×N1>1.5S2, the cross-sectional area of ​​the uniformly distributed tube and the cross-sectional area of ​​the microwave feed port need to be increased, and the uniform distribution of microwaves is not greatly improved. By controlling the ratio of the cross-sectional area of ​​the waveguide to the total cross-sectional area of ​​the uniformly distributed holes, the uniform distribution of microwaves in the microwave curing cavity is achieved, thereby improving the uniformity of microwave curing.

[0026] The microwave emitting assembly 22 can be arranged on the top surface or the bottom surface of the microwave curing cavity 2 to facilitate the uniform distribution of microwaves in the microwave curing cavity 2 and improve the microwave curing quality of the artificial stone slab.

[0027] The power of the microwave generator is 10kW to 100kW, and the microwave frequency is 500MHz to 2000MHz; the temperature of the microwave curing cavity is 50℃ to 100℃, and the curing time is 3min to 30min.

[0028] Preferably, the microwave generator performs intermittent microwave curing, wherein the working time of each microwave irradiation is 10s to 180s, and the time for stopping microwave irradiation is 10s to 180s. The intermittent microwave curing of the microwave generator can improve the uniformity of microwave curing and the quality of microwave curing.

[0029] The material of the conveying device 21 may cause sparks, heat and other problems in a microwave environment, affecting the normal progress of microwave curing, resulting in low utilization of the microwave equipment and high maintenance frequency. Therefore, the transmission part of the conveying device 21 is arranged outside the microwave curing cavity 2. In one embodiment, the conveying device of each layer can move independently under the control of the motor and the transmission device. Each layer of the conveying device includes a conveying roller, a transmission device and a motor. The roller shaft of the conveying roller passes through the microwave curing cavity. The two ends of the roller shaft are connected to the outer wall of the microwave curing cavity through a fixed seat. The transmission device is respectively connected to the motor and the conveying roller. The motor drives each layer of the conveying device to move independently through the transmission device. Specifically, the transmission device can be a gear rack transmission device.

[0030] In one embodiment, the multi-layer conveying device can move synchronously under the control of the motor and the transmission device. The multi-layer conveying device 21 includes a conveying roller rod 211, a first transmission device 23, a second transmission device 24 and a motor 25. The roller shaft of the conveying roller rod 211 passes through the microwave curing cavity, and the two ends of the roller shaft are connected to the outer wall of the microwave curing cavity 2 through a fixed seat 212. The first transmission device 23 is respectively connected to the motor 25 and one layer of the conveying roller rod 211, and the motor 25 drives one layer of the conveying device 21 to move through the first transmission device 23. Specifically, the first transmission device can be a worm gear transmission device. The second transmission device 24 is connected to the multi-layer conveying roller rod 211 in the same vertical direction, and the second transmission device 24 drives the conveying devices 21 of different layers to move synchronously. Specifically, the second transmission device can be a gear rack transmission device, and the roller shafts of the conveying roller rods in the same vertical direction are provided with gears, and synchronous rotation is achieved through the rack. During the working process, one layer of the conveying device 21 moves driven by the motor 25 and the first transmission device 23, and the conveying devices of different layers move driven by the second transmission device 24. The motor 25, the first transmission device 23 and the second transmission device 24 can control the synchronous movement of the conveying devices of different layers. There is no need to set corresponding motors and transmission devices on each layer of the conveying device, which saves space and can realize synchronous conveying of multiple layers of conveying devices, thereby improving the loading and unloading efficiency of artificial stone slabs, thereby improving the curing efficiency of artificial stone slabs.

[0031] In order to better carry the artificial stone slab and improve the stability during transportation, the conveying rollers 211 on the same layer are arranged at equal intervals along the conveying direction of the artificial stone slab, and the width of the conveying rollers 211 is greater than the width of the artificial stone slab.

[0032] A shielding door 25 is provided in the entry and exit direction of the microwave curing cavity 2 to shield the microwaves in the microwave curing cavity during the curing process, thereby ensuring the microwave curing effect and preventing damage to the human body caused by microwave leakage.

[0033] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A microwave heating and curing equipment for batch artificial stone panels. It is characterized in that It comprises a frame and a microwave curing cavity mounted on the frame, wherein a multi-layer conveying device and a microwave emitting assembly are arranged in the microwave curing cavity, and the conveying device is arranged along the height direction of the microwave curing cavity and is used to convey and carry the artificial stone slab in the microwave curing cavity; The microwave emitting assembly comprises a microwave generator, a waveguide and a uniform distribution member, and is used for the generation, transmission and uniform distribution of microwaves.

2. The microwave heating and curing equipment for batch artificial stone slabs as claimed in claim 1, It is characterized in that A microwave feed inlet is provided at the upper part or the lower part of the microwave curing cavity, the inlet end of the waveguide is connected to the microwave generator, the outlet end of the waveguide is connected to the uniformly distributed component, and is communicated with the microwave curing cavity through the microwave feed inlet.

3. The microwave heating and curing equipment for batch artificial stone slabs as claimed in claim 2, It is characterized in that The uniform distribution component is a uniform distribution tube, and a plurality of uniform distribution holes are evenly distributed on the end surface of the uniform distribution tube at one side connected to the microwave curing cavity.

4. The microwave heating and curing equipment for batch artificial stone panels as claimed in claim 3, It is characterized in that The cross-sectional area of ​​the uniformly distributed holes is S 1 , the number is N 1 , the cross-sectional area of ​​the waveguide is S 2 , which satisfies the following relationship: S 1 ×N 1 =S 2 ×(1±0.5).

5. The microwave heating and curing equipment for batch artificial stone slabs according to any one of claims 1 to 4, It is characterized in that The power of the microwave generator is 10kW to 100kW, and the microwave frequency is 500MHz to 2000MHz; The temperature of the microwave curing cavity is 50° C. to 100° C., and the curing time is 3 min to 30 min.

6. The microwave heating and curing equipment for batch artificial stone slabs as claimed in claim 5, It is characterized in that The microwave generator performs intermittent microwave curing.

7. The microwave heating and curing equipment for batch artificial stone slabs as claimed in claim 5, It is characterized in that It also includes a driving assembly for driving the conveying device to move, the driving assembly includes a transmission device and a motor arranged on one side of the conveying device on each layer, the conveying device on each layer includes a plurality of conveying rollers, the transmission device on each layer is respectively connected to the motor and the conveying rollers on that layer, and the motor drives the conveying device on each layer to move independently through the transmission device.

8. The microwave heating and curing equipment for batch artificial stone slabs as claimed in claim 5, It is characterized in that It also includes a driving component for driving the conveying device to move, the driving component includes a motor, a first transmission device and a plurality of second transmission devices, the first transmission device is horizontally arranged on one side of one layer of the conveying device, and the plurality of second transmission devices are respectively longitudinally arranged between the multiple layers of the conveying devices; each layer of the conveying device includes a plurality of conveying rollers, each of the second transmission devices is connected to one column of conveying rollers in the same vertical direction, and is used to drive the conveying rollers of different layers in the same vertical direction to rotate synchronously, the first transmission device is connected to one layer of the conveying rollers, and is used to drive the conveying rollers of this layer to move synchronously, and the motor drives the conveying device of each layer to move synchronously through the first transmission device and the second transmission device.

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