Electromagnetic heating lamination method

Abstract

The invention relates to an electromagnetic heating laminating method in the field of laminating methods and devices, in the invention, the distances between a plurality of heating studs are kept consistent, the heating power of the heating studs is consistent, the number of turns of coils is visual and controllable, the coil winding work is simple, the uniformity is high, the cost of electronic components is greatly reduced, the heating effect is uniform, the laminating effect is good, and the production efficiency is high. The coil is applied to lamination heating, the temperature uniformity and the temperature control precision of the coil are ensured, and the heating stud and the coil are isolated through the heat insulation sleeve, so that the temperature generated by working of the heating stud cannot directly act on the coil easily, the heat loss of the coil is reduced, and the service life of the coil is prolonged; the plurality of electromagnetic heating units are in threaded connection with the working part, so that the electromagnetic heating units are convenient to disassemble, a worker can reasonably design the positions of the electromagnetic heating units on the working part according to actual lamination processing requirements so as to meet the working requirements, and the operation is flexible.

Description

Technical Field

[0001] The invention relates to an electromagnetic heating lamination method, in particular to an electromagnetic heating lamination method applied in the field of lamination methods and devices. Background Art

[0002] The solar cell module laminator draws a vacuum at high temperature to melt the module material, expel the air and press them together. The high temperature is heated by a heating system. Since the laminator was born, the heating method has undergone a stage transition from electric heating to oil medium heating.

[0003] The invention patent CN201610803469.8 specification discloses a flexible solar lamination processing equipment. The lamination processing equipment provided by the invention is safe, efficient, low-consumption and energy-saving. It realizes centralized heating control of the temperature rise targets of different heating chambers through centralized heating pumps and centralized heating stations. The hot oil circulation pipeline adopts a four-in-four-out integrated method and is built into the heating plate, which maximizes the thermal conductivity of the heat transfer oil, reduces energy loss, increases the heating speed, increases the heating speed by more than 3.5 times, and shortens the production cycle.

[0004] The main existing technology is oil-heating laminator. The laminator is equipped with a hot oil heating station. The heating station uses a heating pipe to heat the thermal oil, and then injects the thermal oil into the heating plate through an oil pump and circulates it. During use, a heating station system needs to be configured, and the thermal oil must be replaced regularly. The thermal efficiency is low, and the problems of electric heating mainly focus on the cost of electronic components and uneven heating, which results in poor lamination effect. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the problems of the existing electric heating laminating equipment are mainly concentrated on the cost of electronic components and uneven heating resulting in poor laminating effect.

[0006] To solve the above problems, the present invention provides a lamination method using electromagnetic heating, comprising the following steps: S1. Lamination equipment arrangement. The lamination equipment includes a working part and a sealing cover that match each other. The working part and the sealing cover are temporarily fixed by snapping. A PLC controller is mounted in the sealing cover. A plurality of threaded holes are drilled at one end of the working part close to the sealing cover. A plurality of temperature sensors are arranged at the gaps between the plurality of threaded holes. A plurality of electromagnetic heating units are fixedly connected in the plurality of threaded holes. The plurality of electromagnetic heating units include a heating stud. The heating stud is provided with a lock nut. An end of the heating stud close to the working part is inserted into the working part and fixedly connected to the working part. An outer sleeve of the heating stud is provided. A coil is wound around the outer side of the thermal insulation sleeve. Both ends of the coil are fixedly connected to a power source. A fixing nut is threadedly connected to the heating stud. The fixing nut is tightly attached to the upper side of the thermal insulation sleeve. S2. In the use of lamination equipment, during the electric heating lamination process, the temperature sensor will upload the temperature it detects to the PLC controller in real time. When the temperature detected by the temperature sensor and the preset temperature of the lamination process meet ±1.5℃, the electromagnetic heating unit works normally. When the temperature detected by the temperature sensor and the preset temperature of the lamination process exceed ±1.5℃, it is determined that the working state of the electromagnetic heating unit in the current temperature sensor area is abnormal, and the PLC controller intervenes to control the electromagnetic heating unit: when the temperature is too low, the power of the electromagnetic heating unit is increased, otherwise the power of the electromagnetic heating unit is reduced, so that the lamination temperature meets the preset value.

[0007] In the above-mentioned electromagnetic heating lamination method, the spacing between multiple heating studs is consistent, the heating power of the heating studs is consistent, the number of coil turns is intuitive and controllable, the coil winding work is simple, the identity is high, the cost of electronic components is greatly reduced, and the heating effect is uniform and the lamination effect is good. The coil is used for lamination heating, and its temperature uniformity and temperature control accuracy are guaranteed.

[0008] As a further improvement of the present application, the heating stud and the working part can be fixedly connected by welding. Compared with threaded connection, welding fixation is less likely to loosen during repeated use and is suitable for large-scale continuous processing.

[0009] As a further improvement of the present application, a protection unit is provided between the coils, and the protection unit includes a prestressed bag. The prestressed bag has a tendency to shrink inward, and is filled with an air-hardening gel material, which is an insulating material. A plurality of leakage holes are opened at the upper end of the prestressed bag, and a hot-melt sealing block matching the prestressed bag is fixedly connected to the plurality of leakage holes. Excessive temperature at the coil will cause the structural strength of the hot-melt sealing block to decrease. When the prestressed bag is in a tendency to shrink, the air-hardening gel material is squeezed out of the prestressed bag through the leakage hole and covers the surface of the coil, thereby reducing the interaction between the coil and external heat and increasing the safety of the coil.

[0010] As a further improvement of the present application, the aerohardening gel material is filled with a high-viscosity liquid, and the volume of the high-viscosity liquid is one tenth of the aerohardening gel material. The high-viscosity liquid is selected to be colored. On the one hand, the overall viscosity of the aerohardening gel material can make it difficult for it to flow through the coil surface. At the same time, it is convenient for the staff to promptly find the electromagnetic heating unit that triggers the protection unit during the maintenance process, and replace it in time, thereby reducing the possibility of the electromagnetic heating unit working with a defect.

[0011] As another improvement of the present application, an annular attachment pad is inserted in the prestressed bag, and the annular attachment pad is in close contact with the inner wall of the prestressed bag. The end of the attachment pad away from the insulation sleeve is fixedly connected to a plurality of heat dissipation units. The heat dissipation unit is made of heat-conductive material. A plurality of deformation balls are suspended in the air-hardening condensation material. During the extrusion of the air-hardening gel material, the deformation balls are driven to collide with the heat dissipation unit, causing the heat dissipation unit to break and be discharged from the prestressed bag. A mesh structure for heat dissipation is formed in the subsequently solidified air-hardening gel material, thereby reducing the heat exchange surface between the coil and the outside world, reducing the influence of the outside temperature on the coil, and at the same time, the working heat of the coil can also be dissipated to a certain extent to avoid excessive heat accumulation.

[0012] As another improvement supplement of the present application, the deformation ball is filled with high-pressure gas, and the air pressure is 1.2 times the standard air pressure. After the deformation ball is discharged from the prestressed bag, the volume of the deformation ball will also increase, increasing the volume of the air-hardening condensation material after solidification, making it easier to completely cover the coil.

[0013] As another improved supplement of the present application, the heat dissipation unit includes a heat dissipation part, on which a barb and a fracture groove are chiseled, and the fracture groove is located at the end away from the barb, so that when the protection unit hits the heat dissipation unit, the heat dissipation unit is easily broken at one of the barbs, and a double-headed barb is formed, and multiple protection units are easily locked together, and the protection units are easily hung on the surface of the barb, forming a mesh heat dissipation structure in which the coil is connected to the outside world.

[0014] As another improvement of the present application, the portion from the barb on the heat dissipation part to the attachment pad is a hard structure, and the portion from the barb on the heat dissipation part to the breaking groove is an elastic structure. On the one hand, the heat dissipation unit is easy to break at the barb, and on the other hand, the elastic portion is not easy to get stuck in the leakage port.

[0015] In summary, in the present application, the spacing between multiple heating studs is consistent, the heating power of the heating studs is consistent, the number of coil turns is intuitive and controllable, the coil winding work is simple, the identity is high, and no large amount of glue is required to fix the coil, which greatly reduces the cost of electronic components, and the heating effect is uniform and the lamination effect is good. The coil is used for lamination heating, and its temperature uniformity and temperature control accuracy are guaranteed. At the same time, the heating studs and coils are isolated by thermal insulation sleeves, so that the temperature generated by the heating studs is not easily directly applied to the coil, reducing the heat loss of the coil and increasing the service life of the coil. At the same time, the connection between multiple electromagnetic heating units and the working part adopts threaded connection, which is easy to disassemble. The staff can reasonably design the position of the electromagnetic heating unit on the working part according to the actual lamination processing requirements to meet the work requirements and be flexible in operation.

[0016] At the same time, by setting up a protection unit and a heat dissipation unit, on the one hand, when the environment in which the coil is located is overheated, the coil can be isolated from most of the heat exchange with the outside world, thereby reducing the impact on the coil. At the same time, through the design of the heat dissipation unit, a mesh structure for heat dissipation is formed in the protection unit to achieve a certain heat dissipation function and avoid excessive heat accumulation in the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of the main structure of the electromagnetic heating lamination device according to the first embodiment of the present application; Figure 2 This is a flow chart of a lamination method according to a first embodiment of the present application; Figure 3 A schematic diagram of an electromagnetic heating lamination device according to a first embodiment of the present application; Figure 4 This is a schematic structural diagram of an electromagnetic heating unit according to a first embodiment of the present application; Figure 5 This is a front cross-sectional view of the electromagnetic heating unit according to the first embodiment of the present application; Figure 6 This is a schematic structural diagram of an electromagnetic heating unit according to a second embodiment of the present application; Figure 7 This is a front cross-sectional view of an electromagnetic heating unit according to a second embodiment of the present application; Figure 8 for Figure 6 Schematic diagram of the local structure at A in the middle; Fig. 9 for Figure 6 Schematic diagram of local structural changes at A in the middle; Fig.10 This is a schematic structural diagram of an annular attachment pad and a heat dissipation unit according to a second embodiment of the present application; Fig.11 for Fig. 9 Schematic diagram of the local structure at point B.

[0018] Description of the numbers in the figure: 1 working part, 2 sealing cover, 3 electromagnetic heating unit, 301 heating stud, 302 coil, 303 heat insulation sleeve, 304 power supply, 305 fixing nut, 4 protection unit, 401 prestressed capsule, 402 annular attachment pad, 403 hot melt sealing block, 404 deformation ball, 5 heat dissipation unit, 501 heat dissipation part, 502 barb one, 503 fracture groove. DETAILED DESCRIPTION

[0019] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0020] The first implementation method: Figure 1-5A lamination method using electromagnetic heating is shown, comprising the following steps: S1. Lamination equipment arrangement. The lamination equipment includes a working part 1 and a sealing cover 2 that match each other. The working part 1 and the sealing cover 2 are temporarily fixed by snapping. A PLC controller is mounted in the sealing cover 2. A plurality of threaded holes are drilled at one end of the working part 1 close to the sealing cover 2. A plurality of temperature sensors are arranged at the gaps between the plurality of threaded holes. A plurality of electromagnetic heating units 3 are fixedly connected in the plurality of threaded holes. The plurality of electromagnetic heating units 3 include a heating stud 301. The heating stud 301 is provided with a lock nut. The end of the heating stud 301 close to the working part 1 is inserted into the working part 1 and fixedly connected to the working part 1. A heat insulating sleeve 303 is provided on the outer side of the heating stud 301. A coil 302 is wound around the outer side of the heat insulating sleeve 303. A power source 304 is fixedly connected to both ends of the coil 302. A fixing nut 305 is threadedly connected to the heating stud 301. The fixing nut 305 is tightly attached to the upper side of the heat insulating sleeve 303. The thickness of the working part 1 is 40mm, the depth of the threaded hole is 25mm, and the threaded hole is coated with thermal grease. According to the preset power of the lamination process, the power required for each heating stud 301 and the distribution density of the heating stud 301 are calculated. According to experience, a spacing of 100-200mm is generally set; then the diameter, length, inductance, number of turns of the coil 302 and the electromagnetic power controller of the coil 302 are selected according to the power, and the electromagnetic power controller is integrated in the power supply 304. The diameter of the heating stud 301 is 30mm. After the heating stud 301 is installed in place, the distance from the fixing nut 305 to the working part 1 is adjusted by the lock nut at the tail of the heating stud 301, which is the effective space for the winding of the coil 302. The distance is adjusted according to the wire diameter of the coil 302 to keep the wire diameter of all coils 302 consistent; S2. In the use of lamination equipment, during the electric heating lamination process, the temperature sensor will upload the temperature it detects to the PLC controller in real time. When the temperature detected by the temperature sensor and the preset temperature of the lamination process meet ±1.5°C, the electromagnetic heating unit 3 works normally. When the temperature detected by the temperature sensor and the preset temperature of the lamination process exceed ±1.5°C, it is determined that the working state of the electromagnetic heating unit 3 in the current temperature sensor area is abnormal, and the PLC controller intervenes to control the electromagnetic heating unit 3: when the temperature is too low, the power of the electromagnetic heating unit 3 is increased, otherwise the power of the electromagnetic heating unit 3 is reduced, so that the lamination temperature meets the preset value.

[0021] In the present application, the spacing between multiple heating studs 301 is consistent, the heating power of the heating studs 301 is consistent, the number of turns of the coil 302 is intuitive and controllable, the winding work of the coil 302 is simple, the identity is high, and no large amount of glue is required to fix the coil, which greatly reduces the cost of electronic components, and the heating effect is uniform and the lamination effect is good. The coil 302 is used for lamination heating, and its temperature uniformity and temperature control accuracy are guaranteed. Compared with traditional electric heating laminators, it can save energy by 30%, greatly reducing customers' production and manufacturing costs.

[0022] At the same time, the heating stud 301 and the coil 302 are isolated by the heat insulation sleeve 303, so that the temperature generated by the heating stud 301 is not easy to directly act on the coil 302, thereby reducing the heat loss of the coil 302 and increasing the service life of the coil 302. At the same time, the connection between the multiple electromagnetic heating units 3 and the working part 1 adopts a threaded connection, which is easy to disassemble. The staff can reasonably design the position of the electromagnetic heating unit 3 on the working part 1 according to the actual lamination processing requirements to meet the work requirements and be flexible in operation.

[0023] The heating stud 301 and the working part 1 can also be fixedly connected by welding. Compared with threaded connection, welding fixation is less likely to become loose during repeated use and is suitable for large-scale continuous processing.

[0024] In particular, the dimensions of each structure of the present application are not drawn strictly in proportion. Those skilled in the art can reasonably design the dimensions and shapes of each structure according to actual conditions. In particular, for the convenience of display, the present application sets the power supply 304 as an external structure. During actual assembly, technicians can integrate the power supply 304 on the working part 1 or the sealing cover 2 to increase the overall safety of the equipment. This is a well-known technology for those skilled in the art, so it is not disclosed in detail in this application. Those skilled in the art can make a reasonable design based on the existing technology.

[0025] The second implementation method: Figure 6-8A lamination method of electromagnetic heating is shown, wherein a protection unit 4 is sleeved between coils 302 and 302, and the protection unit 4 includes a prestressed capsule 401, which has a tendency to shrink inwards, and is filled with an air-hardening gel material, which is an insulating material. A plurality of leakage holes are drilled at the upper end of the prestressed capsule 401, and a hot-melt sealing block 403 matching the prestressed capsule 401 is fixedly connected to each of the plurality of leakage holes. When the heat generated by the heating stud 301 cannot be dissipated in time and affects the coil 302, the temperature at the coil 302 will cause the structural strength of the hot-melt sealing block 403 to decrease, and under the action of the prestressed capsule 401 which is in a tendency to shrink, the air-hardening gel material is squeezed out of the prestressed capsule 401 through the leakage hole and covers the surface of the coil 302, thereby reducing the interaction between the coil 302 and the external heat and increasing the safety of the use of the coil 302.

[0026] The air-hardening gel material is filled with a high-viscosity liquid, and the volume of the high-viscosity liquid is one tenth of the air-hardening gel material. The high-viscosity liquid is selected to be colored. On the one hand, the overall viscosity of the air-hardening gel material can prevent it from easily flowing through the surface of the coil 302. At the same time, it is convenient for the staff to promptly find the electromagnetic heating unit 3 that triggers the protection unit 4 during maintenance, and replace it in time, thereby reducing the possibility of the electromagnetic heating unit 3 working with a defect.

[0027] See also Figure 7-9 A ring-shaped attachment pad 402 is inserted into the prestressed capsule 401, and the ring-shaped attachment pad 402 is closely attached to the inner wall of the prestressed capsule 401. The end of the attachment pad 402 away from the heat insulation sleeve 303 is fixedly connected with a plurality of heat dissipation units 5. The heat dissipation units 5 are made of heat-conducting materials. A plurality of deformation balls 404 are suspended and filled in the air-hardening condensation material. When the air-hardening gel material is extruded, the deformation balls 404 will be driven to collide with the heat dissipation units 5, so that the heat dissipation units 5 are broken and discharged from the prestressed capsule 401. In the subsequent solidification of the air-hardening gel material, the deformation balls 404 will be driven to collide with the heat dissipation units 5, so that the heat dissipation units 5 are broken and discharged from the prestressed capsule 401. A mesh structure for heat dissipation is formed in the gel material to reduce the heat exchange surface between the coil 302 and the outside world, and reduce the influence of the outside temperature on the coil 302. At the same time, the working heat of the coil 302 can also be dissipated to a certain extent to avoid excessive heat accumulation. The deformation ball 404 is filled with high-pressure gas, and the air pressure is 1.2 times the standard air pressure. After the deformation ball 404 is discharged from the prestressed bag 401, the volume of the deformation ball 404 will also increase, increasing the volume of the air-hardening condensation material after solidification, making it easy to completely cover the coil 302.

[0028] See also Figure 10-11The heat dissipation unit 5 includes a heat dissipation portion 501, on which a barb 502 and a fracture groove 503 are chiseled, and the fracture groove 503 is located at the end of the barb 502 away from 405, so that when the protection unit 4 hits the heat dissipation unit 5, the heat dissipation unit 5 is easily broken at the barb 502 and forms a double-headed barb, multiple protection units 4 are easily locked together, and the protection unit 4 is easily hung on the surface of the barb 502 to form a mesh heat dissipation structure in which the coil 302 is connected to the outside world, and the part from the barb 502 to the attachment pad 402 on the heat dissipation portion 501 is a hard structure, and the part from the barb 502 to the fracture groove 503 on the heat dissipation portion 501 is an elastic structure, which makes the heat dissipation unit 5 easy to break at the barb 502 on the one hand, and on the other hand, the elastic part is not easy to get stuck in the leakage port.

[0029] Compared with the first embodiment, a protection unit 4 and a heat dissipation unit 5 are added in the present embodiment. On the one hand, when the environment in which the coil 302 is located is overheated, the coil 302 can be isolated from most of the heat exchange with the outside world, thereby reducing the impact on the coil 302. At the same time, through the design of the heat dissipation unit 5, a mesh structure for heat dissipation is formed in the protection unit 4, thereby achieving a certain heat dissipation function and avoiding excessive heat accumulation in the coil 302.

[0030] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A lamination method using electromagnetic heating, characterized in that: The following steps are involved: S1. Lamination equipment arrangement, the lamination equipment comprising a working part (1) and a sealing cover (2) that match each other, wherein the working part (1) and the sealing cover (2) are temporarily fixed by snapping together, the sealing cover (2) is equipped with a PLC controller, a plurality of threaded holes are drilled at one end of the working part (1) close to the sealing cover (2), a plurality of temperature sensors are arranged at gaps between the plurality of threaded holes, a plurality of electromagnetic heating units (3) are fixedly connected to the plurality of threaded holes, the plurality of electromagnetic heating units (3) each comprising a heating stud (301), and the plurality of The heating stud (301) is provided with a lock nut, and one end of the heating stud (301) close to the working part (1) is inserted into the working part (1) and fixedly connected to the working part (1); the outer side of the heating stud (301) is provided with a heat insulation sleeve (303), the outer side of the heat insulation sleeve (303) is wound with a coil (302), and both ends of the coil (302) are fixedly connected to a power source (304); the heating stud (301) is threadedly connected with a fixing nut (305), and the fixing nut (305) is tightly attached to the upper side of the heat insulation sleeve (303); S2. In the use of laminating equipment, during the electric heating laminating process, the temperature sensor will upload the temperature detected by itself to the PLC controller in real time. When the temperature detected by the temperature sensor and the preset temperature of the laminating process meet ±1.5°C, the electromagnetic heating unit (3) works normally. When the temperature detected by the temperature sensor and the preset temperature of the laminating process exceed ±1.5°C, it is determined that the working state of the electromagnetic heating unit (3) in the current temperature sensor area is abnormal, and the PLC controller intervenes to control the electromagnetic heating unit (3): when the temperature is too low, the power of the electromagnetic heating unit (3) is increased, otherwise the power of the electromagnetic heating unit (3) is reduced, so that the laminating temperature meets the preset value.

2. The electromagnetic heating lamination method according to claim 1, characterized in that: The heating stud (301) and the working part (1) may also be fixedly connected by welding.

3. The electromagnetic heating lamination method according to claim 1, characterized in that: A protection unit (4) is sleeved between the coils (302) and the coils (302), the protection unit (4) comprising a prestressed bag (401), the prestressed bag (401) having a tendency to shrink inwards, the prestressed bag (401) being filled with an air-hardening gel material, the air-hardening gel material being a heat-insulating material, a plurality of leakage holes being drilled at the upper end of the prestressed bag (401), a hot-melt sealing block (403) matching the prestressed bag (401) being fixedly connected to each of the plurality of leakage holes.

4. The electromagnetic heating lamination method according to claim 3, characterized in that: The air-hardening gel material is filled with a high-viscosity liquid, and the volume of the high-viscosity liquid is one tenth of the volume of the air-hardening gel material. The high-viscosity liquid is selected to be colored.

5. The electromagnetic heating lamination method according to claim 3, characterized in that: An annular attachment pad (402) is inserted into the prestressed bag (401), and the annular attachment pad (402) is in close contact with the inner wall of the prestressed bag (401). One end of the attachment pad (402) away from the heat insulation sleeve (303) is fixedly connected to a plurality of heat dissipation units (5), and the heat dissipation units (5) are made of a heat-conducting material. A plurality of deformation balls (404) are suspended and filled in the air-hardening condensation material.

6. The electromagnetic heating lamination method according to claim 5, characterized in that: The deformable ball (404) is filled with high-pressure gas, and the gas pressure is 1.2 times the standard gas pressure.

7. The electromagnetic heating lamination method according to claim 5, characterized in that: The heat dissipation unit (5) comprises a heat dissipation portion (501), on which a barb (502) and a fracture groove (503) are cut, and the fracture groove (503) is located at an end of the barb (502) away from (405).

8. The electromagnetic heating lamination method according to claim 6, characterized in that: The portion from the barb one (502) on the heat dissipation portion (501) to the attachment pad (402) is a rigid structure, and the portion from the barb one (502) on the heat dissipation portion (501) to the fracture groove (503) is an elastic structure.

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