An electrically heated laminating mechanism of a laminator

Abstract

The application discloses a kind of electric heating laminating mechanism of laminating machine, including mechanism main body and multiple groups of prefabricated electric heating module, mechanism main body includes heating plate, heat preservation component, multiple support cross beams and vacuum pipeline, heat preservation component includes heat preservation cover plate and the outer sheathing plate connected in the non-working surface four around of heating plate, outer sheathing plate and heating plate form shell, multiple support cross beams are evenly arranged in shell and are connected with the non-working surface of heating plate, multiple support cross beams divide the non-working surface of heating plate into several installation areas, prefabricated electric heating module is installed in installation area, heat preservation cover plate is arranged at the outside of prefabricated electric heating module and closes shell, the working surface of heating plate is provided with several vacuum holes, and several vacuum holes are communicated with vacuum pipeline.The application is heated to heating plate by the mode of heat conduction, heating speed is fast, heating temperature is uniform, heating element life is long, easy to track replacement, improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic equipment, in particular to an electric heating laminating mechanism of a laminating machine. Background Art

[0002] With the development of the photovoltaic industry, the quality and size of modules have continued to increase, necessitating continuous upgrades in photovoltaic processing equipment. The core mechanism of a laminator is the laminating mechanism, which comprises the laminator's working platform and vacuum chamber. The laminating mechanism requires an operating temperature of approximately 140-160°C. Currently, mainstream laminators on the market primarily heat the laminating mechanism using an electric boiler to heat the intermediate medium—thermal oil. This oil is then circulated within the laminator's laminating mechanism via an oil pump, ensuring a stable heat source to meet process requirements. To reduce the cost of photovoltaic modules, the primary consideration is reducing production costs. Reducing energy consumption within the laminating mechanism has become a top priority. Furthermore, with increasing module size and faster production cycles, the size of individual heating plates has increased dramatically, making processing more complex. New electric heating laminators are a major development trend in the photovoltaic industry and a technological frontier that all equipment manufacturers are vying to capture. Those who achieve breakthroughs in this area will secure a significant share of the future market. At present, many major photovoltaic module customers have purchased equipment with electric heating lamination mechanism, and there is also greater demand.

[0003] Compared with oil-heating laminators, electric heating laminators have many advantages, such as:

[0004] 1) No thermal oil pollution to the environment, the production workshop is cleaner;

[0005] 2) The heating plate does not need to be drilled with thermal oil holes, and the thickness of the heating plate is reduced, which reduces the processing difficulty and processing cost;

[0006] 3) The heating plate without oil holes has better rigidity and is not easy to deform;

[0007] 4) No oil furnace, no oil pipeline, reducing floor space and noise;

[0008] 5) The total operating power of the electric heating laminator is lower than that of the oil heating laminator, with higher thermal efficiency and more power saving;

[0009] 6) The electric heating laminator has fast thermal compensation, which can improve component quality and reduce process time;

[0010] 7) The heating module of the electric heating laminator is multi-point controllable, and the temperature is better controlled;

[0011] 8) Electric heating laminators heat up faster, taking about half the time of oil heating laminators.

[0012] The core component of an electrically heated laminating mechanism is the heating unit, which also serves as the heating method. Currently, the main heating elements used on the market include heating rods, microcrystalline panels, heating blankets, and mica heating plates. The heating rod heating method involves drilling numerous holes in the laminating mechanism's heating plate, inserting a heating rod into each hole to heat the laminating mechanism. This heating plate method is complex and prone to variability, and installation and wiring of the heating rods are time-consuming. Furthermore, if a heating rod is damaged, it cannot be located, making replacement difficult. Microcrystalline panels are heated by heat conduction, leaving a gap between the microcrystalline panel and the heating plate, requiring a mounting bracket. This is cumbersome and time-consuming, making replacement difficult. Furthermore, microcrystalline panels have low heating efficiency, high cost, and are susceptible to damage. Heating blankets and mica heating plates all operate on similar principles: a coiled resistance wire is built into the heating unit, which is then placed against the laminating mechanism's heating plate to heat the material. However, this method is prone to breakage, has a short lifespan, and produces uneven heat. Furthermore, due to thermal deformation, the resistance wire cannot be securely attached to the heating plate, resulting in uneven temperature. In summary, the current heating methods are all insufficient and it is difficult to meet the process requirements of the laminator. Summary of the Invention

[0013] The purpose of the present invention is to provide an electric heating laminating mechanism for a laminating machine, which solves the problems of uneven temperature of the heating plate of the laminating mechanism, short life of the heating element and difficulty in tracking replacement.

[0014] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0015] The present invention provides an electric heating laminating mechanism of a laminating machine, comprising a mechanism main body and multiple groups of prefabricated electric heating modules, the mechanism main body comprising a heating plate, a thermal insulation component, multiple supporting beams and a vacuum pipeline, the thermal insulation component comprising a thermal insulation cover plate and an outer covering plate connected around the non-working surface of the heating plate, the outer covering plate and the heating plate form a shell, multiple supporting beams are evenly arranged in the shell and connected to the non-working surface of the heating plate, multiple supporting beams divide the non-working surface of the heating plate into several installation areas, the prefabricated electric heating modules are installed in the installation areas, the thermal insulation cover plate is arranged on the outside of the prefabricated electric heating modules to close the shell, a number of vacuum holes are provided on the working surface of the heating plate, and several of the vacuum holes are connected to the vacuum pipeline.

[0016] Furthermore, a plurality of groups of the prefabricated electric heating modules are arranged on the bottom surface of the main body of the mechanism according to the principles of heat transfer and heat dissipation, and by connecting different circuits in parallel, separate areas are divided for individual temperature control.

[0017] Furthermore, a plurality of vacuum holes are arranged at equal intervals along the length direction on both sides of the working surface of the heating plate, and the vacuum pipeline includes a first pipeline, two second pipelines and multiple third pipelines. The two second pipelines are arranged along the length direction on both sides of the non-working surface of the heating plate and are connected to multiple supporting beams. The first pipeline is connected to the two second pipelines, and a plurality of third pipelines are provided on the side of the second pipeline close to the heating plate. The multiple third pipelines correspond one-to-one to the positions of the plurality of vacuum holes, and the third pipelines are connected to the vacuum holes.

[0018] Furthermore, the prefabricated electric heating module includes an electric heating unit and a connecting assembly, the electric heating unit is in close contact with the non-working surface of the heating plate, a gap is provided between two adjacent electric heating units, and the electric heating unit is connected to the non-working surface of the heating plate through the connecting assembly.

[0019] Furthermore, the connecting assembly includes a bolt, a disc spring and a flat spring washer. A plurality of first mounting holes are provided on the electric heating unit. The bolt passes through the first mounting hole and is screwed into the second mounting hole on the non-working surface of the heating plate to lock it in place. The disc spring is sleeved on the end of the bolt away from the heating plate, and the flat spring washer is provided between the first mounting hole and the disc spring.

[0020] Furthermore, the electric heating unit heats the heating plate by heat conduction.

[0021] Furthermore, the electric heating unit adopts an electric heating aluminum plate.

[0022] Furthermore, the interior of the shell is filled with thermal insulation cotton.

[0023] Furthermore, a cable trough is connected to the supporting beam via bolts.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] The present invention arranges the electric heating units in reasonable zones through heat loss and compensation calculations, and adopts electric heating units of different sizes and shapes, which can ensure uniform heat distribution and rapid temperature rise; the electric heating units are directly installed and fixed on the lower side of the heating plate through connecting components, and the electric heating units are in close contact with the heating plate, resulting in less heat loss and uniform temperature; the electric heating units are fixed with bolts and butterfly springs, which not only ensures that the electric heating units are firmly installed and leak-proof, but also provides them with sufficient space for thermal expansion; the present invention has uniform heating temperature, long service life of the heating elements, and is easy to track and replace, effectively reducing the energy consumption of the laminator and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 Schematic diagram of the structure of the electric heating laminating mechanism of the laminating machine of the present invention;

[0028] Figure 2 Schematic diagram of the non-working surface structure of the electric heating laminating mechanism of the laminating machine of the present invention;

[0029] Figure 3 Schematic diagram of the working surface structure of the electric heating laminating mechanism of the laminating machine of the present invention;

[0030] Figure 4 This is a schematic diagram of the installation position of the electric heating aluminum plate unit of the present invention;

[0031] Figure 5 This is a schematic diagram of the connection assembly structure of the present invention;

[0032] Explanation of the accompanying symbols: 1. Mechanism body; 1.1. Support beam; 1.2. Vacuum pipeline; 1.2.1. First pipeline; 1.2.2. Second pipeline; 1.2.3. Third pipeline; 1.3. Insulation component; 1.3.1. Insulation cover; 1.3.2. Outer plate; 1.4. Vacuum hole; 1.5. Heating plate; 1.6. Heating aluminum plate wire and temperature controller control line; 1.7. Wire trough; 2. Prefabricated electric heating module; 2.1. Electric heating unit; 2.2. Connection component; 2.2.1. Bolt; 2.2.2. Disc spring; 2.2.3. Flat spring washer. DETAILED DESCRIPTION

[0033] like Figure 1-5 As shown, an electric heating laminating mechanism of a laminating machine includes a mechanism body 1 and multiple groups of prefabricated electric heating modules 2. The mechanism body 1 includes a heating plate 1.5, a heat preservation component 1.3, multiple supporting beams 1.1 and a vacuum pipeline 1.2. The heat preservation component 1.3 includes a heat preservation cover plate 1.3.1 and an outer plate 1.3.2 connected to the non-working surface of the heating plate. The outer plate 1.3.2 and the heating plate 1.5 form a shell, and multiple supporting beams 1.1 are evenly arranged in the shell. It is connected to the non-working surface of the heating plate 1.5, and multiple supporting beams 1.1 divide the non-working surface of the heating plate 1.5 into several installation areas. The prefabricated electric heating module 2 is installed in the installation area. The inside of the shell is filled with thermal insulation cotton. The thermal insulation cover plate 1.3.1 is arranged on the outside of the prefabricated electric heating module 2 to close the shell. Several vacuum holes 1.4 are provided on the working surface of the heating plate 1.5, and several of the vacuum holes 1.4 are connected to the vacuum pipeline 1.2.

[0034] Specifically, multiple groups of prefabricated electric heating modules 2 are arranged on the bottom surface of the main body 1 of the mechanism according to the principles of heat transfer and heat dissipation, and by connecting different circuits in parallel, separate areas are divided for independent temperature control; wherein the multiple groups of prefabricated electric heating modules 2 have the same structure and different sizes, which makes it easy to control the temperature, ensure uniform heating temperature, reduce the energy consumption of the laminator, and facilitate installation and maintenance.

[0035] Several vacuum holes 1.4 are arranged at equal intervals on both sides of the working surface of the heating plate 1.5 along the length direction. The vacuum pipeline 1.2 includes a first pipeline 1.2.1, two second pipelines 1.2.2 and multiple third pipelines 1.2.3. The two second pipelines 1.2.2 are arranged on both sides of the non-working surface of the heating plate 1.5 along the length direction and are connected to multiple supporting beams 1.1. The first pipeline 1.2.1 is connected with the two second pipelines 1.2.2. A plurality of third pipelines 1.2.3 are provided on the side of the second pipeline 1.2.2 close to the heating plate 1.5. The multiple third pipelines 1.2.3 correspond one-to-one to the positions of the several vacuum holes 1.4, and the third pipelines 1.2.3 are connected with the vacuum holes 1.4. The vacuum holes 1.4 are opened on the heating plate 1.5 to facilitate processing and manufacturing and save production costs.

[0036] The prefabricated electric heating module 2 includes an electric heating unit 2.1 and a connecting component 2.2. The electric heating unit 2.1 is in close contact with the non-working surface of the heating plate 1.5. A gap is provided between two adjacent electric heating units 2.1. The electric heating unit 2.1 is connected to the non-working surface of the heating plate 1.5 through the connecting component 2.2. Specifically, the electric heating unit 2.1 adopts an electric heating aluminum plate. The electric heating unit 2.1 heats the heating plate 1.5 by heat conduction, so that the entire heating plate 1.5 is heated evenly. The supporting crossbeam 1.1 supports and reinforces the heating plate 1.5 to prevent the heating plate 1.5 from being deformed by heat. The present invention adopts an electric heating lamination mechanism. Since there is no need to drill oil holes, the thickness of the heating plate 1.5 is thinner, which greatly saves material and processing costs. In this embodiment, an aluminum heating plate is selected to efficiently convert electrical energy into thermal energy. The heating plate is heated by heat conduction, up to 400°C, with a fast heating speed and a heating time of only 1 / 2 of the traditional oil heating method. Through heat loss and compensation calculation, the electric heating units 2.1 are arranged in reasonable zones, and electric heating units 2.1 of different sizes and shapes are used to ensure uniform heat distribution and rapid temperature rise. The electric heating units 2.1 are directly installed and fixed on the lower side of the heating plate 1.5 through a connecting assembly. The electric heating units 2.1 are in close contact with the heating plate 1.5, resulting in less heat loss and uniform temperature.

[0037] The supporting crossbeam 1.1 is connected with a wire duct 1.7 by means of bolts; the heating aluminum plate wires and the temperature controller control wire 1.6 on the heating aluminum plate are introduced into the power distribution cabinet through the wire duct 1.7.

[0038] like Figure 5 As shown, the connecting assembly 2.2 includes a bolt 2.2.1, a disc spring 2.2.2 and a flat spring washer 2.2.3. A plurality of first mounting holes are provided on the electric heating unit 2.1. After the bolt 2.2.1 passes through the first mounting hole, it is screwed into the second mounting hole on the non-working surface of the heating plate 1.5 to lock and position it. The disc spring 2.2.2 is sleeved on the end of the bolt 2.2.1 away from the heating plate 1.5, and the flat spring washer 2.2.3 is arranged between the first mounting hole and the disc spring 2.2.2; the electric heating unit is fixed with bolts and disc springs, which not only ensures that the heating aluminum plate is installed firmly and without leakage, but also provides it with sufficient thermal expansion space, greatly eliminating the influence of thermal deformation of the heating plate on heating, thereby ensuring the reliability and uniformity of heating, but also avoiding damage to the heating element, and facilitating disassembly and replacement.

[0039] The working process of the present invention is as follows:

[0040] The solar cell modules are transferred to the working surface of the heating plate 1.5 for lamination and packaging. The vacuum pump evacuates the space where the solar cell modules are located through the vacuum pipe 1.2 and the vacuum hole 1.4. After the electric heating unit 2.1 is powered on, it enters the heating state and heats the heating plate 1.5 by heat conduction. When heated to the operating temperature, the temperature controller transmits a signal to the control system, and the control system immediately makes adjustments to allow the electric heating unit 2.1 to continuously maintain the operating temperature to heat the solar cell modules.

[0041] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An electric heating laminating mechanism of a laminating machine, characterized in that: The invention comprises a mechanism body and multiple groups of prefabricated electric heating modules, wherein the mechanism body comprises a heating plate, a thermal insulation component, multiple supporting beams and a vacuum pipeline, the thermal insulation component comprises a thermal insulation cover plate and an outer covering plate connected around the non-working surface of the heating plate, the outer covering plate and the heating plate form a shell, multiple supporting beams are evenly arranged in the shell and connected to the non-working surface of the heating plate, multiple supporting beams divide the non-working surface of the heating plate into a plurality of installation areas, the prefabricated electric heating modules are installed in the installation areas, the thermal insulation cover plate is arranged on the outside of the prefabricated electric heating modules to close the shell, a plurality of vacuum holes are provided on the working surface of the heating plate, and the plurality of vacuum holes are connected to the vacuum pipeline; Multiple groups of prefabricated electric heating modules are arranged on the bottom surface of the main body of the mechanism according to the principles of heat transfer and heat dissipation, and by connecting different circuits in parallel, separate areas are divided for independent temperature control; The prefabricated electric heating module includes an electric heating unit and a connecting assembly, wherein the electric heating unit is in close contact with the non-working surface of the heating plate, a gap is provided between two adjacent electric heating units, and the electric heating unit is connected to the non-working surface of the heating plate through the connecting assembly; The connecting assembly includes a bolt, a disc spring and a flat spring washer. A plurality of first mounting holes are provided on the electric heating unit. The bolt passes through the first mounting hole and is screwed into the second mounting hole on the non-working surface of the heating plate to be locked in place. The disc spring is sleeved on the end of the bolt away from the heating plate, and the flat spring washer is provided between the first mounting hole and the disc spring.

2. The electric heating laminating mechanism of the laminating machine according to claim 1, characterized in that: A number of vacuum holes are arranged at equal intervals on both sides of the working surface of the heating plate along the length direction. The vacuum pipeline includes a first pipeline, two second pipelines and multiple third pipelines. The two second pipelines are arranged on both sides of the non-working surface of the heating plate along the length direction and are connected to multiple supporting beams. The first pipeline is connected to the two second pipelines. A number of third pipelines are provided on the side of the second pipeline close to the heating plate. The multiple third pipelines correspond one-to-one to the positions of the multiple vacuum holes, and the third pipelines are connected to the vacuum holes.

3. The electric heating laminating mechanism of the laminating machine according to claim 1, characterized in that: The electric heating unit heats the heating plate by heat conduction.

4. The electric heating laminating mechanism of the laminating machine according to claim 1, characterized in that: The electric heating unit adopts an electric heating aluminum plate.

5. The electric heating laminating mechanism of the laminating machine according to claim 1, characterized in that: The interior of the shell is filled with thermal insulation cotton.

6. The electric heating laminating mechanism of the laminating machine according to claim 1, characterized in that: The supporting beam is connected with a cable trough via bolts.

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