Graphene heating plate and sole forming machine

Abstract

The utility model relates to a graphene heating plate and a sole forming machine. The graphene heating plate comprises a plate body and a graphene heating body arranged in the plate body, the plate body is formed by combining a frame plate and a heat transfer plate; the frame plate is provided with a concave cavity platform, and a wiring frame groove is formed in the concave cavity platform; the graphene heating body is arranged in the concave cavity platform, a high-frequency damping layer is arranged between the graphene heating body and the frame plate, and the shape of the high-frequency damping layer is matched with that of the wiring frame groove; an insulating layer is arranged between the graphene heating body and the heat transfer plate; a conductive access notch groove is formed in one side edge of the frame plate; and a groove cavity adjacent to the conductive access notch groove is formed in the cavity platform. The graphene heating plate provided by the utility model is efficient and stable in heating, energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of hot pressing molding, in particular to a graphene heating plate and a sole molding machine. Background Art

[0002] Graphene is a two-dimensional material composed of carbon atoms. It is a honeycomb-shaped planar film formed by carbon atoms in an sp2 hybrid manner. It has excellent electrical conductivity, thermal conductivity and thermal stability. Its working principle is that under the action of an alternating electric field, carbon atoms collide and rub against each other to produce molecular motion, thereby generating heat energy. Its electrical energy and thermal energy conversion rate is more than 98%, which has the advantages of high efficiency, speed, energy saving and safety. Therefore, if the graphene heater is used in the molding equipment for heating metal molds, it will greatly improve production efficiency and reduce energy consumption, especially in various heating plate products. The current production method usually uses heating methods such as thermal oil, steam and electric heating pipes. First, the mold is placed on a heating machine for heating. After reaching the appropriate temperature, the raw material is placed in the mold and molded by vulcanization, injection molding, foaming and other methods. However, these traditional heating methods have low heating efficiency and uneven heating. For thermal oil heating, there is also the risk of environmental pollution caused by thermal oil leakage, making it difficult to achieve energy saving and environmental protection. Utility Model Content

[0003] In order to overcome the above problems, the utility model provides a graphene heating plate and a sole forming machine, which are efficient and stable in heating, and are energy-saving and environmentally friendly.

[0004] The utility model solves the technical problem by adopting the following technical solution: a graphene heating plate, comprising a plate body and a graphene heating element arranged in the plate body; the plate body is formed by a frame plate and a heat transfer plate; the frame plate is provided with a concave cavity platform, and a wiring frame groove is provided in the concave cavity platform;

[0005] The graphene heating element is arranged in the concave cavity platform, and a high-frequency shock-absorbing layer is arranged between the graphene heating element and the frame plate, and the shape of the high-frequency shock-absorbing layer is adapted to the shape of the wiring frame groove; an insulating layer is arranged between the graphene heating element and the heat transfer plate; a conductive access notch groove is arranged along one side of the frame plate; and a groove cavity adjacent to the conductive access notch groove is arranged in the concave cavity platform.

[0006] Preferably, the graphene heating element comprises a metal substrate and a graphene composite paste-like liquid material layer, and the graphene composite paste-like liquid material layer is printed on the metal substrate; the shape of the graphene composite paste-like liquid material layer is adapted to the shape of the wiring frame groove of the heat transfer plate.

[0007] Preferably, the graphene composite paste-like liquid material layer comprises an insulating layer, a conductive silver paste layer, a graphene heating layer and an encapsulation layer which are sequentially printed on a metal substrate.

[0008] Preferably, the insulating layer is insulating mica.

[0009] Preferably, the heat transfer plate is provided with a plurality of penetrating positioning holes, the frame plate is provided with hole positioning seats corresponding to the positioning holes, the hole positioning seats are convex structures, the middle part of the hole positioning seats is a through hole structure, and the hole positioning seats are inserted into the positioning holes; there are four positioning holes.

[0010] Preferably, the frame plate is provided with a plurality of through holes; the heat transfer plate is provided with corresponding screw holes, and the outer end surface of the heat transfer plate is a smooth surface.

[0011] The utility model also provides a sole forming machine, comprising a frame, in which an upper heating plate, a lower heating plate and a lifting device are arranged, a heating space is formed between the upper heating plate and the lower heating plate, for placing the plate to be heated; the lifting device is used to drive the upper heating plate to rise and fall, and by lifting the upper heating plate, the upper heating plate is closely attached to or separated from the plate to be heated; the upper heating plate and the lower heating plate are the above-mentioned graphene heating plates; the heat transfer plate of the lower heating plate faces upward, for placing the plate to be heated; the heat transfer plate of the upper heating plate faces downward.

[0012] Preferably, a mold lifting and conveying device is also provided on the side of the frame, and the mold lifting and conveying device is flush with the bottom of the heating space after rising, so as to push the plate to be heated into the heating space.

[0013] Preferably, the upper end surface platform of the lifting and conveying device is a sliding surface composed of multiple rollers.

[0014] The beneficial effects of the utility model are as follows: a graphene heating plate is plane point heating, and the heating points are distributed on the required plane, so that the heat of each point on the entire plane is balanced, which is beneficial to various molds that need balanced heating, and improves the product yield in the mold, especially used in foaming mold products, such as sole foaming molding, the heat transfer plate is attached to the sole foaming mold, and the heating is uniform, the temperature rises quickly, the yield is high, and it is environmentally friendly, energy-saving and emission-reducing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 , 2 It is a schematic diagram of the split structure of the graphene heating plate described in the utility model;

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the bottom structure in FIG.

[0018] Figure 4 It is a structural schematic diagram of the sole forming machine described in the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the sole forming machine described in the utility model from a top view. Description of the drawings:

[0021] 1. frame plate, 11. concave cavity platform, 12. wiring frame groove, 13. notch groove, 14. groove cavity, 15. through hole, 16. hole positioning seat, 2. heat transfer plate, 3. graphene heating element, 4. high-frequency shock absorbing layer, 5. insulation layer, 21. positioning hole, 22. screw hole, 101. rack, 102. upper heating plate, 103. lower heating plate, 1041. lifting frame, 1042. lifting rail, 105. lifting conveying device. DETAILED DESCRIPTION

[0022] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0023] Example 1

[0024] like Figure 1-3 The graphene heating plate shown is composed of a plate body and a graphene heating element 3. The graphene heating element 3 is embedded in the plate body. When working, the heat is transferred to the end surface of the plate body and acts on the external product to be heated.

[0025] Among them, the plate body is a split structure composed of two upper and lower plates, that is, the plate body is formed by a frame plate 1 and a heat transfer plate 2; the graphene heating element 3 is embedded between the frame plate 1 and the heat transfer plate 2, and there is a cavity between the frame plate 1 and the heat transfer plate 2 for installing and accommodating the graphene heating element 3.

[0026] In this embodiment, the frame plate 1 is provided with a cavity platform 11 , and a wiring frame groove 12 is provided in the cavity platform 11 . The cavity platform 11 and the wiring frame groove 12 form a cavity for installing and accommodating the graphene heating element 3 .

[0027] In this embodiment, the graphene heating element 3 is arranged in the concave cavity platform 11, and a high-frequency shock-absorbing layer 4 is arranged between the graphene heating element 3 and the frame plate 1, and the shape of the high-frequency shock-absorbing layer 4 is adapted to the shape of the wiring frame groove 12; an insulating layer 5 is arranged between the graphene heating element 3 and the heat transfer plate 2; a conductive access notch groove 13 is arranged along one side of the frame plate 1, and a groove cavity 14 adjacent to the conductive access notch groove 13 is arranged in the concave cavity platform 11 for installing the electrode contact end.

[0028] In this embodiment, the high-frequency shock-absorbing layer 4 is made of glass fiber material.

[0029] In this embodiment, the insulating layer 5 is made of silicon dioxide.

[0030] In this embodiment, the graphene heating element 3 includes a metal substrate and a graphene composite paste-like liquid material layer, and the graphene composite paste-like liquid material layer is printed on the metal substrate; the shape of the graphene composite paste-like liquid material layer is adapted to the shape of the wiring frame groove 12 of the heat transfer plate 2.

[0031] In this embodiment, the graphene composite paste-like liquid material layer includes an insulating layer 5, a conductive silver paste layer, a graphene heating layer and an encapsulation layer which are sequentially printed on a metal substrate.

[0032] The manufacturing method of the graphene heating plate of the utility model:

[0033] 1. The power of the graphene heating element 3, the frequency of the high-frequency vibration layer, and the wavelength of the graphene heating element 3 can be designed according to different usage environment requirements;

[0034] 2. Modulate a special graphene composite paste liquid material according to the parameters of the circuit design;

[0035] 3. Make printing stencil according to circuit design;

[0036] 4. The graphene composite material is transferred to a specific metal substrate through a screen transfer printing, and after printing, it is sintered and formed;

[0037] 5. The upper and lower metal templates cooperate with the graphene heating element 3. A straight frame groove is designed on one of the metal templates according to the circuit; high-frequency vibration and insulating mica are assembled and fixed with screws.

[0038] The heat generated by the graphene composite material when it is powered on is quickly transferred to the two metal templates through high-frequency vibration and far-infrared wavelengths, and the metal templates heat up quickly. It can be used for all molding equipment that uses metal molds for heating.

[0039] In this embodiment, the insulating layer 5 is an insulating mica body.

[0040] In this embodiment, the heat transfer plate 2 is provided with a plurality of through positioning holes 21, and the frame plate is provided with hole positioning seats 16 corresponding to the positioning holes 21. The hole positioning seat 16 is a raised structure, and the middle part is a through hole structure. The hole positioning seat 16 is inserted into the positioning hole 21, and the hole positioning seat 16 is located in the concave cavity platform 11. In this embodiment, there are four positioning holes 21, which are distributed at four corners and are symmetrical about the center.

[0041] See also Figure 3 The frame plate 1 and the heat transfer plate 2 can be fixedly connected by screws. The frame plate 1 is provided with a plurality of through holes 15; the heat transfer plate 2 is provided with corresponding screw holes 22, and the outer end surface of the heat transfer plate 2 is a smooth surface.

[0042] Different from the traditional heat transfer oil heating plate's bundled tube heating method, the graphene heating plate in this embodiment is a planar point heating, and the heating points are distributed on the required plane, so that the heat of each point on the entire plane is balanced, which is beneficial to various molds that require balanced heating and improves the product yield in the mold, especially used in foaming mold products, such as sole foaming molding. The heat transfer plate is attached to the sole foaming mold, which heats evenly, heats quickly, has a high yield, is environmentally friendly, and saves energy and reduces emissions.

[0043] Example 2

[0044] The sole forming machine shown in Figures 4 and 5 is composed of a frame 101, an upper heating plate 102, a lower heating plate 103 and a lifting device. The frame 101 has an intelligent control device or an industrial computer for controlling the operation of the upper heating plate 102, the lower heating plate 103 and the lifting device. The upper heating plate 102 and the lower heating plate 103 use the graphene heating plate in Example 1.

[0045] A heating space is formed between the upper heating plate 102 and the lower heating plate 103 for placing the plate to be heated; the lifting device is used to drive the upper heating plate 102 to rise and fall, and by lifting the upper heating plate 102, the upper heating plate 102 is closely attached to or separated from the plate to be heated;

[0046] The lifting device comprises a lifting frame 1041 and a lifting rail 1042. Both sides of the lifting frame 1041 are installed on the lifting rail 1042. The upper heating plate 102 is installed in the lifting frame 1041. The lifting rail 1042 is driven by screw rotation or hydraulic lifting frame.

[0047] Different from the traditional heat transfer oil heating plate's bundled tube heating method, the graphene heating plate in this embodiment is a planar point heating, and the heating points are distributed on the required plane, so that the heat of each point on the entire plane is balanced, which is beneficial to various molds that require balanced heating and improves the product yield in the mold, especially used in foaming mold products, such as sole foaming molding. The heat transfer plate is attached to the sole foaming mold, which heats evenly, heats quickly, has a high yield, is environmentally friendly, and saves energy and reduces emissions.

[0048] See also Figure 2A mold lifting and conveying device 105 is also provided on the side of the frame 101. After the mold lifting and conveying device 105 rises, it is flush with the bottom of the heating space so that the plate to be heated can be pushed into the heating space. Among them, the upper end surface platform of the lifting and conveying device 105 is a sliding surface composed of multiple rollers. The plate to be heated is placed on the upper end surface of the lifting and conveying device 105. When it rises to be flush with the bottom of the heating space, the plate to be heated is pushed into the heating space, and the upper heating plate 102 is lowered, so that the upper and lower end surfaces of the plate to be heated are respectively attached to the upper heating plate 102 and the lower heating plate 103 for heating; conversely, after the heating work is completed, a tool is used to push the heated mold onto the upper end surface platform of the lifting and conveying device 105, and the lifting and conveying device 105 is lowered to remove the heated mold, or the heated mold is pushed into the cooling device for cooling.

[0049] Experimental data:

[0050] Comparison of electricity consumption between graphene machine and oil furnace machine

[0051]

[0052]

[0053]

[0054] See the data in the table above:

[0055] 1: The statistics of meter A are the electricity consumption directly connected to the graphene electric heating plate; the statistics of meter B and meter C are the electricity consumption including the graphene electric heating plate and the oil tank pump. It can be observed from the statistical table that the continuous stable test lasts for 27 days, and the morning and evening shifts are 24 hours a day (meter C 58411 degrees - meter B 33722 degrees) / 27 days = an average electricity saving of 914 degrees / day; the energy saving ratio is 914 / 2163 = 42.20%. According to the 27 working days per month in this test month, meter C-meter B = 24689 degrees. If 900 degrees of electricity are saved per day, 270,000 degrees of electricity can be saved per year if the production is 300 days per year.

[0056] 2: The above tests are basically consistent with the energy consumption test results in March 2023. Compared with the thermal oil furnace, it has the following advantages:

[0057] 1. The product quality is good. Due to the stable temperature, the yield is greatly improved, the color difference is stable, and the production capacity is also improved.

[0058] 2. No pollution, pure electric heating can greatly improve the machine, working environment and hygiene, eliminate oil pollution and respond to green and low-carbon.

[0059] 3. Power regulation controls heating, stabilizes grid impact, reduces harmonic pollution, and extends equipment life.

[0060] 4. The temperature of each hole can be controlled independently to meet the working temperature requirements of various types of bodies and ensure stable product quality.

[0061] 5. The heating time is fast, and there is no need to arrange special personnel to start the machine for preheating in advance. Production can begin 20 minutes after starting the machine.

[0062] 6. The service life is more than 5 years without maintenance, while the thermal oil heater needs to be replaced every two years or added in the middle, and the pipes inside the plate are prone to carbon accumulation, causing poor heat conduction, oil leakage, etc.

[0063] 3: The actual test results of the compression ratio of the semi-finished products with the same shape and number on site and the small foam with a thickness of 30mm are as follows:

[0064] 1. Set the temperature of the oil furnace to 180, the oil outlet temperature to 179-180, the hot plate temperature to 174-177, and the mold cavity temperature to 166-172. Heating for 620 seconds will not cook through and there will be voids. It will still not cook through after 650 seconds, so it will be done after 670 seconds.

[0065] 2. The graphene temperature is set to 180, the hot plate temperature is 176-180, and the mold cavity temperature is 169-175. The first heating is 650 seconds without holes. It is also cooked to 600 seconds without holes. The bottom is flat, the shape and mold jumping are all good.

[0066] 3. According to the above special test of the same type and number, the production capacity can be increased by (670-600) / 670=10.4%. After deducting the operating time of employees, it is estimated that it should be increased by 5% to 8%. In addition, according to the statistical data of indifferent mass production for 27 consecutive days, the graphene machine produces 10382 more pairs than the thermal oil machine (an average of 384 pairs per day), and the capacity improvement rate is 10382 / 186353=5.5%.

[0067] 4: The statistical data of meter A shows that the electricity cost of directly connecting the graphene electric heating plate (excluding the oil tank and oil pump) is 0.14 kWh / pair. According to the electricity prices in different countries or regions, the cost of heating by large thermal oil boilers can be compared (including fuel cost + cost of replacing and adding thermal oil + operation and maintenance cost of boiler and pipeline + cost of fuel storage site and facilities + environmental protection / quality supervision and safety supervision and other costs + safety hazard costs).

[0068] 5: The sole forming machine using the graphene hot plate in this embodiment can effectively improve production capacity, reduce defective losses, save energy costs, optimize the production environment, reduce safety hazards, and increase the competitiveness of the enterprise.

[0069] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A graphene heating plate, characterized in that: It comprises a plate body and a graphene heating element arranged in the plate body; the plate body is formed by a frame plate and a heat transfer plate; the frame plate is provided with a concave cavity platform, and a wiring frame groove is provided in the concave cavity platform; The graphene heating element is arranged in the concave cavity platform, and a high-frequency shock-absorbing layer is arranged between the graphene heating element and the frame plate, and the shape of the high-frequency shock-absorbing layer is adapted to the shape of the wiring frame groove; an insulating layer is arranged between the graphene heating element and the heat transfer plate; a conductive access notch groove is arranged along one side of the frame plate; and a groove cavity adjacent to the conductive access notch groove is arranged in the concave cavity platform.

2. A graphene heating plate according to claim 1, characterized in that: The graphene heating element comprises a metal substrate and a graphene composite paste-like liquid material layer, wherein the graphene composite paste-like liquid material layer is printed on the metal substrate; the shape of the graphene composite paste-like liquid material layer is adapted to the shape of the wiring frame groove of the heat transfer plate.

3. A graphene heating plate according to claim 2, characterized in that: The graphene composite paste-like liquid material layer comprises an insulating layer, a conductive silver paste layer, a graphene heating layer and an encapsulation layer which are sequentially printed on a metal substrate.

4. A graphene heating plate according to claim 3, characterized in that: The insulating layer is an insulating mica body.

5. A graphene heating plate according to claim 4, characterized in that: The heat transfer plate is provided with a plurality of through positioning holes, and the frame plate is provided with hole positioning seats corresponding to the positioning holes. The hole positioning seats are convex structures, and the middle part of the hole positioning seats is a through hole structure, and the hole positioning seats are inserted into the positioning holes.

6. A graphene heating plate according to claim 5, characterized in that: The frame plate is provided with a plurality of through holes; the heat transfer plate is provided with corresponding screw holes, and the outer end surface of the heat transfer plate is a smooth surface.

7. A sole forming machine, characterized in that: It comprises a frame, in which an upper heating plate, a lower heating plate and a lifting device are arranged, a heating space is formed between the upper heating plate and the lower heating plate for placing the plate to be heated; the lifting device is used to drive the upper heating plate to rise and fall, and by lifting the upper heating plate, the upper heating plate is closely attached to or separated from the plate to be heated; the upper heating plate and the lower heating plate are the graphene heating plates according to any one of claims 1 to 6; the heat transfer plate of the lower heating plate faces upwards, and is used for placing the plate to be heated; the heat transfer plate of the upper heating plate faces downwards.

8. A sole forming machine according to claim 7, characterized in that: The side of the frame is also provided with a mold lifting and conveying device, which is flush with the bottom of the heating space after rising, so as to push the plate to be heated into the heating space.

9. A sole forming machine according to claim 8, characterized in that: The upper end surface platform of the lifting and conveying device is a sliding surface composed of multiple rollers.

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