Reflective film and insulation film pressing mechanism

Abstract

This application relates to the field of photovoltaic module manufacturing technology, and in particular to a mechanism for bonding reflective and insulating films. The mechanism includes a mounting frame and a first feeding component, a second feeding component, a heating component, and a bonding component mounted on the mounting frame. The first feeding component provides a first film strip, and the second feeding component provides a second film strip. Of the first and second film strips, one is a reflective film, and the other is an insulating film. The first and second film strips, drawn from the feeding components, pass through a first guide channel and a second guide channel on the mounting frame under traction, and converge and bond between a first pressure roller and a second pressure roller in the bonding component to form a mixed film strip. The heating component heats the first and / or second film strips. This mechanism can heat and bond the reflective and insulating films, allowing the reflective film application process and the insulating film application process to be performed simultaneously, achieving precise laying and efficient lamination of the two film materials.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module manufacturing technology, and in particular to a mechanism for pressing reflective film and insulating film together. Background Technology

[0002] In photovoltaic module manufacturing, to ensure electrical safety, insulating films are laid between the solar cells to isolate current paths and prevent leakage risks. As the demand for photoelectric conversion efficiency continues to increase, module manufacturers lay reflective films between the cells to improve the module's photoelectric conversion efficiency by reflecting leaked light. To meet the dual requirements of improving power generation efficiency and ensuring electrical safety, the synergistic use of reflective and insulating films has become a key technology in high-end module production. However, most film-laying equipment currently on the market is single-film dedicated type, with its mechanical structure and film material conveying system only suitable for laying one type of film material.

[0003] Therefore, there is an urgent need to develop a film-laying mechanism that can accurately lay and efficiently composite two types of film materials to improve the production efficiency and product quality of photovoltaic modules and promote the advancement of photovoltaic module manufacturing technology. Utility Model Content

[0004] The purpose of this application is to provide a mechanism for pressing reflective film and insulating film together, so as to solve the technical problem that existing photovoltaic module manufacturing processes can only lay reflective film or insulating film separately.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A reflective film and insulating film pressing mechanism includes a mounting frame and a first feeding assembly, a second feeding assembly, a heating assembly, and a pressing assembly disposed on the mounting frame, wherein:

[0007] A first feeding assembly is used to provide a first film strip, and a second feeding assembly is used to provide a second film strip; of the first film strip and the second film strip, one is a reflective film and the other is an insulating film;

[0008] The mounting frame is provided with a first guide channel and a second guide channel. The pressing assembly includes a first pressure roller and a second pressure roller arranged vertically. A first film belt led out from the first feeding assembly and a second film belt led out from the second feeding assembly pass through the first guide channel and the second guide channel respectively under the pull of the traction force, and converge and press between the first pressure roller and the second pressure roller to form a mixed film belt.

[0009] The heating assembly includes an air blower for blowing hot air, which is positioned in front of the pressing assembly, with the air outlet of the air blower facing the first membrane belt and / or the second membrane belt.

[0010] During operation, the reflective and insulating film bonding mechanism involves a first film strip drawn from the first feeding assembly passing sequentially through the first guide channel and the gap between the first and second pressure rollers. Similarly, a second film strip drawn from the second feeding assembly passes sequentially through the second guide channel and the gap between the first and second pressure rollers. Before entering the first and second pressure rollers, the first and / or second film strips are heated to a sticky consistency by hot air from an air blower. This allows the first and second film strips to converge within the gap between the first and second pressure rollers and bond together under the pressure of the two rollers to form a mixed film strip. By hot-pressing the reflective and insulating films together, the reflective film application process and the insulating film application process can be performed simultaneously, achieving precise laying and efficient lamination of the two film materials. This improves the production efficiency and product quality of photovoltaic modules and promotes the advancement of photovoltaic module manufacturing technology. Heating either the reflective or insulating film to a sticky consistency, or simultaneously heating both to a sticky consistency, achieves the purpose of hot-pressing bonding.

[0011] In some embodiments, the groove width of the first guide channel is greater than the width of the first film strip, and the difference between the width of the first guide channel and the width of the first film strip does not exceed 0.2 mm.

[0012] And / or, the width of the second guide channel is greater than the width of the second membrane strip, and the difference in width between the second guide channel and the second membrane strip does not exceed 0.2 mm.

[0013] Since the width difference between the guide channel and the corresponding membrane strip is no more than 0.2mm, the offset of the membrane strip in the width direction is also no more than 0.2mm. This allows the guide channel to precisely limit the position of the corresponding membrane strip in the width direction, thereby ensuring the tensioning accuracy and preventing the two membrane strips from shifting in the width direction.

[0014] In some embodiments, the heating assembly further includes a heating chamber, a second membrane strip passing through the heating chamber, and an air outlet communicating with the heating chamber.

[0015] Heating the second membrane belt using a heating chamber not only prevents heat loss and ensures heating effect, but also improves the uniformity of heating.

[0016] In some embodiments, the heating assembly further includes a support member, on which a second guide channel is provided, and an air blowing head is located above the second guide channel on the support member. The side of the air blowing head facing the bottom of the groove of the second guide channel has an air outlet, and the air blowing head and the support member together form a heating chamber.

[0017] In the above structure, the air blowing head and the support together form the cavity wall of the heating chamber. An air outlet is provided on the top wall of the heating chamber, and a second guide channel is provided on the bottom wall of the heating chamber. As the second membrane belt passes through the second guide channel in the heating chamber, hot air is blown from the air outlet on the top wall of the chamber to the second membrane belt from top to bottom. The hot air is not easily lost under the enclosure of the heating chamber, so the second membrane belt can be heated evenly and efficiently.

[0018] In some embodiments, the support member has a top surface, and a second guide channel is recessed on the top surface of the support member. In other embodiments, the support member is a plurality of rollers with annular grooves on their circumferential surfaces, and the annular grooves of the plurality of rollers cooperate to form the second guide channel on the side facing the air blowing head.

[0019] Both of the above embodiments can form a second guide channel on the support member. In the embodiment where the top surface of the support member has a recessed second guide channel, the heating chamber has better sealing, and heat is less likely to dissipate. In the embodiment where the support member consists of multiple rollers, since the rollers can rotate around their own axis, the frictional force on the second membrane belt can be reduced, alleviating the tension on the second membrane belt.

[0020] In some embodiments, the heating assembly further includes a first drive source configured to drive the air blowing head away from and towards the support to open and close the heating chamber.

[0021] When the mixing membrane belt is not being pulled, the first drive source drives the air blowing head away from the support to open the heating chamber. At this time, the top slot of the second guide channel is not blocked by the air blowing head, and its internal heat can be quickly dissipated, avoiding the hidden danger of the second membrane belt melting and sticking to the second guide channel due to heat.

[0022] In some embodiments, the blowing head has an air inlet cavity, an air inlet port, and at least two air outlets, the air inlet port and each air outlet port being connected to the air inlet cavity, and multiple air outlets being evenly distributed on the bottom surface and / or side surface of the blowing head.

[0023] Multiple air outlets can improve the uniformity of airflow from the blower head, thereby improving the uniformity of heating the second membrane belt.

[0024] In some embodiments, the air outlet is slit-shaped, round-shaped, or elongated.

[0025] Compared to round or elongated air outlets, slit-shaped air outlets blow out hotter air with higher heat output, faster airflow, and better heating effect.

[0026] In some embodiments, the pressing assembly further includes a second drive source configured to drive the first pressure roller and the second pressure roller to approach and move away from each other in order to press and release the first membrane strip and the second membrane strip.

[0027] When the first and second film strips need to be thermally bonded, the second drive source drives the first and second pressure rollers to approach each other to press the first and second film strips together. The extrusion pressure from the first and second pressure rollers forms a mixed film strip. When the film strips need to be replaced, the second drive source drives the first and second pressure rollers to move away from each other to release the first and second film strips, facilitating replacement.

[0028] In some embodiments, the reflective film and insulating film pressing mechanism further includes a preheating component disposed on a mounting frame. The preheating component, the air blowing head and the pressing component are arranged sequentially at intervals along the conveying direction of the second film belt. The preheating component is disposed below the second guide channel. The preheating component includes at least one electric heater.

[0029] Before the second membrane belt enters the heating assembly, the electric heater preheats the second membrane belt to about 50-60°, so that the second membrane belt can be heated to a sticky state in an instant when it moves to the blowing head.

[0030] In some embodiments, the reflective film and insulating film pressing mechanism further includes a cooling assembly disposed on a mounting frame, the cooling assembly being disposed after the pressing assembly and configured to cool the mixed film strip.

[0031] The temperature of the mixed film tape can be quickly reduced by the cooling components, thereby reducing the tape's stickiness and allowing it to be better conveyed or wound up.

[0032] In some embodiments, the mounting frame is provided with a third support platform, which is located after the pressing assembly. The top surface of the third support platform has a third guide channel for the mixing film belt to pass through. In other embodiments, the mounting frame is provided with a row of second support rollers, which are located after the pressing assembly. Each second support roller has an annular groove on its circumferential surface, and the mixing film belt passes sequentially through the upper side of the annular groove on each second support roller.

[0033] Both of the above embodiments can support and guide the hybrid membrane strip, thereby improving the stretching accuracy of the hybrid membrane strip.

[0034] In some embodiments, both the first guide channel and the second guide channel are covered by cover plates. The cover plates press each membrane strip into its corresponding guide channel, preventing the membrane strip from detaching and further improving the guiding and limiting effect of the guide channels on the membrane strips.

[0035] In some embodiments, the reflective film and insulating film pressing mechanism further includes a traction component configured to pull the mixed film strip along a predetermined direction.

[0036] The traction assembly provides traction force to each membrane belt, enabling each membrane belt to be transported in a set direction. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 Three-dimensional schematic diagrams of the reflective film and insulating film pressing mechanism provided in Embodiments 1 to 3 of this application;

[0039] Figure 2 for Figure 1 A magnified view of the bottom section;

[0040] Figure 3 This is an assembly diagram of the heating assembly, pressing assembly, and preheating assembly provided in Embodiments 1 to 3 of this application;

[0041] Figure 4 This is a partial assembly diagram of the air blowing head and support provided in Embodiments 1 to 3 of this application;

[0042] Figure 5 A three-dimensional schematic diagram of a first type of air-blowing head provided for embodiments of this application;

[0043] Figure 6 A three-dimensional schematic diagram of a second type of air blowing head provided for an embodiment of this application;

[0044] Figure 7 A three-dimensional schematic diagram of a third type of air-blowing head provided for embodiments of this application;

[0045] Figure 8 Three-dimensional schematic diagrams of the first support platform provided for embodiments one to three of this application;

[0046] Figure 9 for Figure 8 A schematic diagram of the structure after the cover plate is installed;

[0047] Figure 10 for Figure 2 The diagram shows the structure after all the cover plates are installed.

[0048] Figure 11 A partial three-dimensional schematic diagram of the reflective film and insulating film pressing mechanism provided in Embodiment 4 of this application;

[0049] Figure 12This is a three-dimensional schematic diagram of the reflective film and insulating film pressing mechanism provided in Embodiment 5 of this application.

[0050] icon:

[0051] 1-Mounting bracket; 11-First guide channel; 12-Second guide channel; 13-Third guide channel; 14-First support platform; 15-Cover plate; 16-Second support platform; 17-First support roller; 18-Third support platform; 19-Second support roller;

[0052] 2-First feeding assembly; 21-First transition guide roller; 22-First tension guide roller; 23-First guide rail;

[0053] 3-Second feeding assembly; 31-Second transition guide roller; 32-Second tension guide roller; 33-Second guide rail;

[0054] 4-Heating component; 41-Air blowing head; 411-Air outlet; 412-Air blowing shell; 413-Shell cover; 42-Support component; 43-First drive source; 44-Heating block; 45-Heat insulation component; 46-Heating mounting block; 47-Temperature measuring element;

[0055] 5-Pressure assembly; 51-First pressure roller; 52-Second pressure roller; 53-Second drive source;

[0056] 6-Preheating assembly; 61-Electric heater;

[0057] 7-Cooling components;

[0058] 100-Reflective film;

[0059] 200 - Insulating film;

[0060] 300-Mixed membrane strip. Detailed Implementation

[0061] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] It should be noted that in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] It should be noted that, in the description of this application, the terms "connection" and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] Example 1

[0065] To address the limitation that existing photovoltaic module manufacturing processes can only lay reflective film or insulating film separately, this application provides a reflective film and insulating film lamination mechanism, as described above. Figures 1 to 3 The reflective film and insulating film pressing mechanism includes a mounting frame 1 and a first feeding assembly 2, a second feeding assembly 3, a heating assembly 4, and a pressing assembly 5 disposed on the mounting frame 1, wherein:

[0066] The first feeding assembly 2 is used to provide the first film strip, and the second feeding assembly 3 is used to provide the second film strip; of the first film strip and the second film strip, one is a reflective film 100 and the other is an insulating film 200;

[0067] The mounting frame 1 is provided with a first guide channel 11 and a second guide channel 12. The pressing assembly 5 includes a first pressure roller 51 and a second pressure roller 52 arranged vertically. A first film belt led out from the first feeding assembly 2 and a second film belt led out from the second feeding assembly 3 pass through the first guide channel 11 and the second guide channel 12 respectively under the pull of the traction force, and converge and press between the first pressure roller 51 and the second pressure roller 52 to form a mixed film belt 300.

[0068] The heating assembly 4 includes an air blower 41 for blowing hot air. The air blower 41 is disposed in front of the pressing assembly 5, and the air outlet 411 on the air blower 41 faces the first membrane belt and / or the second membrane belt.

[0069] It should be noted that the air blower head 41 can be arranged in several ways: First, the air outlet 411 on the air blower head 41 is close to the reflective film 100, in which case the air blower head 41 heats the reflective film 100; second, the air outlet 411 on the air blower head 41 is close to the insulating film 200, in which case the air blower head 41 heats the insulating film 200; third, the air blower head 41 is positioned between the reflective film 100 and the insulating film 200, and the air blower head 41 has multiple air outlets. 411, where part of the air outlet 411 is close to the reflective film 100 and the other part of the air outlet 411 is close to the insulating film 200, at this time, the air blowing head 41 heats the reflective film 100 and the insulating film 200 simultaneously; fourth, the number of air blowing heads 41 is at least two, where part of the air blowing head 41 is close to the reflective film 100 and the other part of the air blowing head 41 is close to the insulating film 200, so that the reflective film 100 and the insulating film 200 can also be heated simultaneously. Heating either the reflective film 100 or the insulating film 200 to a sticky state, or heating both to a sticky state simultaneously, can achieve the purpose of hot-pressing and bonding the two together. The proximity distance between the air blowing head 41 and the reflective film / insulating film can be adjusted according to actual needs. For example, the proximity distance can be 1mm, 2mm, 5mm, 8mm, 12mm, 20mm, 25mm, 30mm, etc. The specific value is adapted to the strength and melting of different types of film tapes so that the film tape melts to a sticky state but does not break under traction.

[0070] It should also be noted that the number of first guide channels 11 can be one, two, or more, and the number of second guide channels 12 can be one, two, or more. The length and number of guide channels are adaptively adjusted according to the guiding and limiting requirements of the corresponding membrane belt.

[0071] Furthermore, the reflective film and insulating film pressing mechanism also includes a traction assembly, which is configured to move along a predetermined direction ( Figure 1 (The direction of the arrow at the bottom center) guides the traction of the hybrid membrane belt 300. The traction assembly in this application is a conventional membrane belt traction assembly, and its structure is not described in detail here.

[0072] During operation, the reflective film and insulating film pressing mechanism provided in this application, under the pulling force of the traction component, the first film strip led out from the first feeding component 2 passes sequentially through the gap between the first guide channel 11 and the first pressure roller 51 and the second pressure roller 52, and the second film strip led out from the second feeding component 3 passes sequentially through the gap between the second guide channel 12 and the first pressure roller 51 and the second pressure roller 52. Before the first film strip and / or the second film strip are inserted into the first pressure roller 51 and the second pressure roller 52, they are heated to a sticky state by the hot air blown out by the air blowing head 41. In this way, the first film strip and the second film strip meet in the gap between the first pressure roller 51 and the second pressure roller 52, and are bonded together under the extrusion pressure of the two pressure rollers to form a mixed film strip 300. By hot-pressing and bonding the reflective film 100 and the insulating film 200, the reflective film application process and the insulating film application process can be carried out simultaneously, realizing the precise laying and efficient composite of the two film materials, improving the production efficiency and product quality of photovoltaic modules. At the same time, it fills the gap in the industry where there is no process and equipment to apply the reflective film 100 and the insulating film 200 to photovoltaic modules together, thus promoting the advancement of photovoltaic module manufacturing technology.

[0073] In some embodiments, refer to Figure 1 The first feeding assembly 2 includes a first transition guide wheel 21 and a first tension guide wheel 22 mounted on the mounting frame 1. A first film belt is wound around the first transition guide wheel 21 and the first tension guide wheel 22 and passes through the first guide channel 11 under the guidance of each guide wheel. The first tension guide wheel 22 floats on the mounting frame 1 under the force of gravity and the tension of the first film belt. The number and position of the first transition guide wheels 21 are adaptively adjusted according to the guiding requirements of the first film belt. To limit the floating trajectory of the first tension guide wheel 22, the first feeding assembly 2 also includes a first guide rail 23 fixed on the mounting frame 1. The length direction of the first guide rail 23 is parallel to the vertical direction. The first tension guide wheel 22 is slidably mounted on the first guide rail 23. The first film belt is wrapped around the first tension guide wheel 22 in a semi-encircling manner from the lower side of the first tension guide wheel 22. Limiting blocks are provided at both ends of the first guide rail 23 along its length direction to prevent the first tension guide wheel 22 from falling off. During the conveying process of the first membrane belt under traction, the first tensioning guide wheel 22 floats up and down under the force of gravity and the tension of the first membrane belt, using its own weight to tension the first membrane belt.

[0074] In some embodiments, similar to the structure of the first feeding assembly 2, the second feeding assembly 3 includes a second transition guide wheel 31 and a second tension guide wheel 32 disposed on the mounting frame 1. The second film belt is wound around the second transition guide wheel 31 and the second tension guide wheel 32 and passes through the second guide channel 12 under the guidance of each guide wheel. The second tension guide wheel 32 is floatingly disposed on the mounting frame 1 under the force of gravity and the tension of the second film belt. The second feeding assembly 3 also includes a second guide rail 33 fixed on the mounting frame 1. The length direction of the second guide rail 33 is parallel to the vertical direction. The second tension guide wheel 32 is slidably disposed on the second guide rail 33. The second film belt is wrapped around the second tension guide wheel 32 in a semi-encircling manner from the lower side of the second tension guide wheel 32. Limiting blocks are respectively provided at both ends of the second guide rail 33 along the length direction to prevent the second tension guide wheel 32 from falling off.

[0075] In this embodiment, as Figures 1 to 3 As shown, the first film strip is a reflective film 100, and the second film strip is an insulating film 200. An air blower head 41 is positioned at the angle between the reflective film 100 and the insulating film 200, and an air outlet 411 is provided on the side of the air blower head 41 closest to the insulating film 200. Alternatively, an air outlet 411 can also be provided on the side of the air blower head 41 closest to the reflective film 100.

[0076] Generally, the width of the reflective film 100 ranges from 3mm to 6mm, and the width of the insulating film 200 ranges from 10mm to 20mm. Since the insulating film 200 is wider than the reflective film 100, the insulating film 200 has higher strength and is less prone to breakage. Therefore, it is preferred to heat the insulating film 200 to a sticky state, and it is preferred to support the insulating film 200 under the reflective film 100 during pressing.

[0077] In some embodiments, the width of the first guide channel 11 is greater than the width of the first film strip, and the difference between the width of the first guide channel and the width of the first film strip does not exceed 0.2 mm. In some embodiments, the width of the second guide channel 12 is greater than the width of the second film strip, and the difference between the width of the second guide channel and the width of the second film strip does not exceed 0.2 mm. In some embodiments, the width of the first guide channel 11 is greater than the width of the first film strip, the width of the second guide channel 12 is greater than the width of the second film strip, and the difference between the width of the guide channel and the corresponding film strip does not exceed 0.2 mm. Since the difference between the width of the guide channel and the corresponding film strip does not exceed 0.2 mm, the offset of the film strip in the width direction also does not exceed 0.2 mm, allowing the guide channel to precisely limit the position of the corresponding film strip in the width direction, thereby ensuring the tensioning accuracy and preventing the two film strips from shifting in the width direction.

[0078] Furthermore, referring to Figure 3The pressing assembly 5 also includes a second drive source 53, which is configured to drive the first pressure roller 51 and the second pressure roller 52 to approach and move away from each other to press and release the first and second film strips. When the first and second film strips need to be thermally bonded, the second drive source 53 drives the first pressure roller 51 and the second pressure roller 52 to approach each other to press the first and second film strips together, and the first and second film strips are pressed together by the extrusion force of the two pressure rollers to form a mixed film strip 300. When the film strips need to be replaced, the second drive source 53 drives the first pressure roller 51 and the second pressure roller 52 to move away from each other to release the first and second film strips, so as to facilitate the replacement of the film strips.

[0079] The second driving source 53 can be configured to drive the first pressure roller 51 away from or close to the second pressure roller 52, or it can be configured to drive the second pressure roller 52 away from or close to the first pressure roller 51, or it can be configured to drive the first pressure roller 51 and the second pressure roller 52 to move towards each other or away from each other. All three driving methods can achieve the first pressure roller 51 and the second pressure roller 52 to approach each other or move away from each other.

[0080] Optionally, the second drive source 53 is a piston cylinder (including a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder) or a motor; the power output end of the second drive source 53 can be directly connected to at least one of the first pressure roller 51 and the second pressure roller 52, or it can be indirectly connected to at least one of the first pressure roller 51 and the second pressure roller 52 through conventional transmission structures such as lead screw nut, gear rack, belt pulley, and connecting rod.

[0081] In this embodiment, the first pressure roller 51 is mounted on the mounting bracket 1, and the second drive source 53 is a cylinder. The cylinder body of the second drive source 53 is fixedly mounted on the mounting bracket 1, and the piston rod of the second drive source 53 is connected to the second pressure roller 52. During the extension and retraction process, the second drive source 53 drives the second pressure roller 52 away from or towards the first pressure roller 51. In some other embodiments, the second drive source 53 is a motor, and the output shaft of the second drive source 53 is connected to a bidirectional lead screw. The bidirectional lead screw has two threaded sections with opposite directions of rotation. The first pressure roller 51 and the second pressure roller 52 are respectively threaded into the two threaded sections of the bidirectional lead screw. Thus, when the second drive source 53 is started, the bidirectional lead screw drives the first pressure roller 51 and the second pressure roller 52 to move towards or away from each other. In other still embodiments, the second drive source 53 is a thumb cylinder, and the two thumbs of the thumb cylinder are respectively connected to the two pressure rollers to realize the two pressure rollers moving towards or away from each other.

[0082] In some embodiments, the heating assembly 4 further includes a temperature sensing element 47 disposed on the air blowing head 41. The temperature sensing element 47 can be a thermocouple, and the heating temperature can be monitored in real time to prevent the heating temperature from being too high or too low.

[0083] Reference Figure 3and Figure 4 In some embodiments, the heating assembly 4 further includes a heating chamber, through which a second membrane strip (in this embodiment, an insulating membrane 200) passes, and an air outlet 411 communicates with the heating chamber. The communication between the air outlet 411 and the heating chamber includes two methods: one where the air outlet 411 is located on the wall of the heating chamber; and another where the air outlet 411 is aligned with a through hole or notch on the wall of the heating chamber. Using the heating chamber to heat the insulating membrane 200 not only prevents heat loss and ensures heating effectiveness but also improves the uniformity of heating.

[0084] Continue to refer to Figure 4 In some embodiments, the heating assembly 4 further includes a support member 42, on which a second guide channel 12 is provided. An air blowing head 41 is located above the second guide channel 12 on the support member 42. An air outlet 411 is provided on the side of the air blowing head 41 facing the bottom of the groove of the second guide channel 12. The air blowing head 41 and the support member 42 together form a heating chamber. In the above structure, the air blowing head 41 and the support member 42 together constitute the cavity wall of the heating chamber. An air outlet 411 is provided on the top wall of the heating chamber, and a second guide channel 12 is provided on the bottom wall of the heating chamber. As the insulating film 200 passes through the second guide channel 12 in the heating chamber, hot air is blown from top to bottom onto the insulating film 200 by the air outlet 411 on the top wall of the chamber. The hot air is not easily lost under the enclosure of the heating chamber, thereby allowing the insulating film 200 to be heated evenly and efficiently.

[0085] In this embodiment, as Figure 4 As shown, the support member 42 is a block structure or a plate structure. The support member 42 has a top surface parallel to the horizontal plane, and the top surface of the support member 42 is recessed with a second guide channel 12.

[0086] Furthermore, the distance between the air blowing head 41 and the bottom of the groove of the second guide channel 12 on the support member 42 is in the range of 5mm-20mm. If the distance is too close, the insulating film 200 may be overheated and stick to the bottom of the groove of the second guide channel 12; if the distance is too far, the mixing film strip 300 may not stick firmly due to insufficient heating temperature of the insulating film 200.

[0087] The insulating film 200 is heated to a temperature above 100°C within the heating chamber. After heating, the insulating film 200 becomes sticky. After being pressed together by the upper and lower pressure rollers, the reflective film 100 is pressed and adhered to the insulating film 200. When it is not necessary to heat the insulating film 200 by blowing air, the traction assembly stops traction on the mixing film belt 300. At this time, although the air outlet 411 can be controlled to stop blowing air via the solenoid valve, the support member 42 itself has a high heat content. This heat from the support member 42 continues to heat the insulating film 200, potentially causing the insulating film 200 to melt and stick to the second guide channel 12. Based on the above problems, continue to refer to... Figure 3 In some embodiments, the heating assembly 4 further includes a first driving source 43, which is configured to drive the air blowing head 41 away from and towards the support member 42 to open and close the heating chamber. When the traction assembly stops traction on the mixing membrane belt 300, the first driving source 43 drives the air blowing head 41 away from the support member 42 to open the heating chamber. At this time, the top slot of the second guide channel 12 is not blocked by the air blowing head 41, and its internal heat can be quickly dissipated, avoiding the potential risk of the insulating film 200 melting and sticking to the second guide channel 12 due to heat.

[0088] Optionally, the first drive source 43 is a piston cylinder (including a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder) or a motor; the power output end of the first drive source 43 can be directly connected to the air blowing head 41, or it can be indirectly connected to the air blowing head 41 through conventional transmission structures such as lead screw nut, gear rack, belt pulley, and connecting rod. In this embodiment, the first drive source 43 is a pneumatic cylinder, the cylinder body of the first drive source 43 is fixedly mounted on the mounting bracket 1, the piston rod of the first drive source 43 is fixedly connected to the air blowing head 41, and the first drive source 43 drives the air blowing head 41 to translate when it extends or retracts.

[0089] Continue to refer to Figure 3 In some embodiments, the heating assembly 4 further includes an electric heating block 44 and an electric heating mounting block 46. The electric heating block 44 is fixedly connected between the air blowing head 41 and the electric heating mounting block 46. A hot air heater is mounted on the electric heating mounting block 46. The inlet of the hot air heater is connected to an air source through a pipe, and the outlet of the hot air heater is connected to the air outlet 411 on the air blowing head 41 through a hot air channel inside the electric heating block 44. In this way, the hot air heater transmits hot air to the air outlet 411 and blows it out to heat the insulating film 200. Furthermore, a heat insulation member 45 is provided on the upper and / or lower side of the electric heating mounting block 46. The heat insulation member 45 reduces the heat dissipation of the hot air heater itself to a certain extent, so as not to affect the normal operation of the components around the hot air heater.

[0090] Based on the above structure, the first drive source 43 is mounted on the mounting bracket 1 and located above the electric heating mounting block 46. A heat insulation component 45 is provided between the first drive source 43 and the electric heating mounting block 46. The power output end of the first drive source 43 is fixedly connected to the electric heating mounting block 46. The power of the first drive source 43 is transmitted to the air blowing head 41 through the electric heating mounting block 46 and the electric heating block 44.

[0091] Reference Figures 5 to 7 In some embodiments, the air blowing head 41 has an air inlet cavity, an air inlet, and at least two air outlets 411. The air inlet and each air outlet 411 are connected to the air inlet cavity, and multiple air outlets 411 are evenly distributed on the bottom surface and / or side surface of the air blowing head 41. Multiple air outlets 411 can be evenly distributed only on the bottom surface of the air blowing head 41, or evenly distributed on the side surface of the air blowing head 41, or evenly distributed on both the bottom surface and side surface of the air blowing head 41. Multiple air outlets 411 can improve the uniformity of airflow from the air blowing head 41, thereby improving the heating uniformity of the insulating film 200. In this embodiment, the air inlet of the air blowing head 41 is connected to the hot air channel inside the heating block 44.

[0092] Optionally, the air outlet 411 may be in the form of a slit, a round hole, or an elongated hole. Figure 5 In the embodiment shown, the air outlet 411 is slit-shaped, and multiple air outlets 411 are evenly distributed on the bottom surface of the air blowing head 41. Figure 6 In the embodiment shown, the air outlet 411 is in the shape of a round hole, and multiple air outlets 411 are evenly distributed on the bottom and side surfaces of the air blowing head 41. Figure 7 In the illustrated embodiment, the air outlet 411 is elongated, and multiple air outlets 411 are evenly distributed on the bottom surface of the air blower head 41. Compared to round or elongated air outlets 411, the slit-shaped air outlet 411 blows out hot air with higher heat, faster wind speed, and better heating effect.

[0093] Continue to refer to Figure 5 In some embodiments, the air blowing head 41 includes an air blowing shell 412 and a shell cover 413. The air blowing shell 412 has an opening on the side near the second membrane belt, and the shell cover 413 covers the opening of the air blowing shell 412. The air blowing shell 412 and the shell cover 413 together form an air inlet cavity, and an air outlet 411 is provided on the shell cover 413. Setting the air blowing head 41 as a split structure can reduce the processing difficulty of the air outlet 411 and the inner cavity of the air blowing head 41. The shell cover 413 can be a stainless steel plate with a small thickness, which facilitates the cutting and forming of the slit-shaped air outlet 411.

[0094] In some other embodiments, the blowing head 41 can also be a heat gun.

[0095] Reference Figure 2In some embodiments, the mounting frame 1 is provided with a third support platform 18, which is located after the pressing assembly 5. The top surface of the third support platform 18 is provided with a third guide channel 13 for the mixing film belt 300 to pass through. In this embodiment, the top surface of the third support platform 18 is parallel to the horizontal plane, and it plays a guiding and supporting role for the mixing film belt 300.

[0096] Reference Figure 3 In some embodiments, the mounting bracket 1 is provided with a second support platform 16, and the top surface of the second support platform 16 is provided with a second guide channel 12; in this embodiment, the second support platform 16 is located in front of the air blowing head 41, the top surface of the second support platform 16 is parallel to the horizontal plane, and the insulating film 200 passes through the second guide channel 12.

[0097] Reference Figure 3 and Figure 8 In some embodiments, the mounting bracket 1 is provided with a first support platform 14, and the top surface of the first support platform 14 is provided with a first guide channel 11; in this embodiment, the top surface of the first support platform 14 is inclined from top to bottom toward the gap between the first pressure roller 51 and the second pressure roller 52, and the reflective film 100 passes through the first guide channel 11.

[0098] Reference Figure 9 and Figure 10 In some embodiments, the first guide channel 11 is covered by a cover plate 15; the second guide channel 12 is covered by a cover plate 15; and the third guide channel 13 is covered by a cover plate 15. The air blowing head 41 above the support member 42 is also essentially a cover plate. The cover plates 15 press each membrane strip into its corresponding guide channel, preventing the membrane strip from detaching from the corresponding guide channel, further improving the guiding and limiting effect of the guide channels on the membrane strip. Each guide channel can be completely or partially covered by the cover plate 15; this is not limited here.

[0099] Example 2

[0100] The reflective film and insulating film pressing mechanism provided in this embodiment is an extension of Embodiment 1.

[0101] During operation, to ensure processing efficiency and the relative position of the two film strips, the reflective film and insulating film laminating mechanism is typically under high-speed tension. Under this high-speed tension, the air blower 41 has difficulty heating the insulating film 200 to a sticky state instantaneously. Based on the above issues, referring to... Figure 2 and Figure 3In this embodiment, the reflective film and insulating film pressing mechanism further includes a preheating component 6 disposed on the mounting frame 1. The preheating component 6, the air blowing head 41 and the pressing component 5 are arranged sequentially at intervals along the conveying direction of the second film belt (specifically the insulating film 200 in this embodiment). The preheating component 6 is disposed below the second guide channel 12. The preheating component 6 includes at least one electric heater 61.

[0102] In the above structure, the number of electric heaters 61 can be one, two, or more; the shape of the electric heater 61 can be a heating rod or a heating plate, and its heating principle can be one of electromagnetic heating, resistance heating, or infrared heating. In this embodiment, the electric heater 61 is specifically a heating rod with a resistance wire inside, and the number of heating rods is three, arranged sequentially and spaced apart along the conveying direction of the insulating film 200. Before the insulating film 200 enters the heating assembly 4, the electric heater 61 preheats the insulating film 200 to about 50-60°, so that the insulating film 200 can be heated to a sticky state instantaneously when it moves to the blowing head 41.

[0103] In some embodiments, the preheating assembly 6 further includes a protective cover disposed on the mounting bracket 1, which covers the exterior of each electric heater 61.

[0104] In some embodiments, continue to refer to Figure 3 The mounting bracket 1 is provided with a second support platform 16, and the top surface of the second support platform 16 is provided with a second guide channel 12. The heating parts of each electric heater 61 are located at the bottom of the second support platform 16. Furthermore, the heating assembly 4 also includes an electric heating block 44 and an electric heating mounting block 46 (as described above). The electric heating mounting block 46 is suspended above the second support platform 16, and the heat from the electric heating mounting block 46 and the hot air heater can also be used to preheat the insulating film 200.

[0105] Example 3

[0106] The reflective film and insulating film pressing mechanism provided in this embodiment is an extension of Embodiment 1 or Embodiment 2.

[0107] Reference Figure 2 The reflective film and insulating film pressing mechanism also includes a cooling assembly 7 mounted on the mounting frame 1. The cooling assembly 7 is located after the pressing assembly 5 and is configured to cool the mixed film belt 300. The cooling assembly 7 can quickly reduce the temperature of the mixed film belt 300, thereby reducing the stickiness of the mixed film belt 300 and allowing the mixed film belt 300 to be better conveyed or wound.

[0108] Optionally, the cooling principle of the cooling assembly 7 can be one of cold air cooling, cold plate cooling, or refrigerator cooling. In some embodiments, the cooling assembly 7 includes a blower for blowing cold air onto the mixing film belt 300. In other embodiments, the cooling assembly 7 includes a third support platform 18 disposed on the mounting frame 1, the top surface of the third support platform 18 having a third guide channel 13 for the mixing film belt 300 to pass through, and a cooling channel for circulating coolant within the third support platform 18. In still other embodiments, the cooling assembly 7 includes a TEC semiconductor refrigerator, the cooling surface of which is close to the mixing film belt 300. All of the above structures can achieve the effect of cooling the mixing film belt 300.

[0109] Example 4

[0110] The difference between the reflective film and insulating film pressing mechanism provided in this embodiment and those in embodiments one to three is that this embodiment uses a support wheel instead of a support platform.

[0111] Reference Figure 11 In some embodiments, the support member 42 is a plurality of ( Figure 11 Specifically, there are two rollers with annular grooves on their circumferences (essentially acting as support rollers). The annular grooves of the multiple rollers cooperate to form a second guide channel 12 on the side facing the air blowing head 41. In the above structure, the heating chamber formed between the multiple rollers and the air blowing head 41 has gaps around its perimeter, and the internal heat can be dissipated outward from the gaps around the perimeter. Therefore, the first driving source 43 is not required.

[0112] In some embodiments, the mounting frame 1 does not have a second support platform 16. Instead, a row of first support rollers 17 located in front of the air blowing head 41 is provided on the mounting frame 1. Each first support roller 17 has an annular groove on its circumferential surface. The second membrane belt passes through the upper side of the annular groove on each first support roller 17 in sequence. The annular grooves of the row of first support rollers 17 facing the second membrane belt cooperate to form a second guide channel 12. In embodiments with a preheating assembly 6, the heating part of each electric heater 61 is located at the bottom of the row of first support rollers 17; or, the first support roller 17 is an electric heating wheel with a resistance wire inside.

[0113] In some embodiments, instead of a third support platform 18, a row of second support rollers 19 located behind the pressing assembly 5 is provided on the mounting frame 1. Each second support roller 19 has an annular groove on its circumferential surface, and the mixing film belt 300 passes sequentially through the upper side of the annular groove on each second support roller 19. The annular grooves of the row of second support rollers 19 facing the mixing film belt 300 cooperate to form a third guide channel 13.

[0114] Based on the above structure, the rollers, first pressure roller 51, first support roller 17 and second support roller 19 constituting the support member 42 are arranged side by side in the horizontal direction.

[0115] Compared to the support platform, the support roller can roll around its own axis, which can reduce the friction on the membrane belt and alleviate the tension on the membrane belt.

[0116] In this embodiment, due to space constraints, the first support platform 14 remains a plate-like structure. Of course, if the installation space is not limited, the first support platform 14 can also be replaced by a row of inclined support wheels.

[0117] It should be noted that, based on Embodiment 1, the support member 42 is replaced with multiple rollers, the second support platform 16 is replaced with the first support roller 17, and the third support platform 18 is replaced with the second support roller 19. The above three structural changes can be made by only one of them, or any two of them, or all three of them.

[0118] Example 5

[0119] Reference Figure 12 In this embodiment, the first film strip is an insulating film 200, and the second film strip is a reflective film 100. The reflective film and insulating film pressing mechanism provided in this embodiment has the same structure as that in embodiments one to four, except that the positions of the two film strips are changed, and its structure will not be described again here.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A mechanism for pressing reflective film and insulating film together, characterized in that, The reflective film and insulating film pressing mechanism includes a mounting frame and a first feeding assembly, a second feeding assembly, a heating assembly, and a pressing assembly disposed on the mounting frame, wherein: The first feeding assembly is used to provide a first film strip, and the second feeding assembly is used to provide a second film strip; of the first film strip and the second film strip, one is a reflective film and the other is an insulating film; The mounting frame is provided with a first guide channel and a second guide channel. The pressing assembly includes a first pressure roller and a second pressure roller arranged vertically. The first film belt led out from the first feeding assembly and the second film belt led out from the second feeding assembly pass through the first guide channel and the second guide channel respectively under the pull of the traction force, and converge and press between the first pressure roller and the second pressure roller to form a mixed film belt. The heating assembly includes an air blower for blowing hot air, the air blower being disposed in front of the pressing assembly, and the air outlet of the air blower facing the first membrane belt and / or the second membrane belt.

2. The reflective film and insulating film pressing mechanism according to claim 1, characterized in that, The width of the first guide channel is greater than the width of the first film strip, and the difference between the width of the first guide channel and the width of the first film strip does not exceed 0.2 mm. And / or, the width of the second guide channel is greater than the width of the second film strip, and the difference in width between the second guide channel and the second film strip does not exceed 0.2 mm.

3. The reflective film and insulating film pressing mechanism according to claim 1, characterized in that, The heating assembly further includes a heating chamber, through which the second membrane strip passes, and the air outlet communicates with the heating chamber.

4. The reflective film and insulating film pressing mechanism according to claim 1, characterized in that, The heating assembly also includes a support member, on which the second guide channel is provided. The air blowing head is located above the second guide channel on the support member. The air outlet is provided on the side of the air blowing head facing the bottom of the groove of the second guide channel. The air blowing head and the support member together form a heating chamber.

5. The reflective film and insulating film pressing mechanism according to claim 4, characterized in that, The support member has a top surface, and the top surface of the support member is recessed with the second guide channel; Alternatively, the support member may be a plurality of rollers with annular grooves on their circumferential surfaces, the annular grooves of the plurality of rollers cooperating to form the second guide channel on one side facing the air blowing head.

6. The reflective film and insulating film pressing mechanism according to claim 4, characterized in that, The heating assembly further includes a first driving source configured to drive the air blowing head away from and towards the support member to open and close the heating chamber.

7. The reflective film and insulating film pressing mechanism according to claim 1, characterized in that, The blowing head has an air inlet cavity, an air inlet, and at least two air outlets. The air inlet and each of the air outlets are connected to the air inlet cavity. Multiple air outlets are evenly distributed on the bottom surface and / or side surface of the blowing head.

8. The reflective film and insulating film pressing mechanism according to claim 1, characterized in that, The air outlet is in the form of a slit, a round hole, or a long hole.

9. The reflective film and insulating film pressing mechanism according to claim 1, characterized in that, The pressing assembly further includes a second drive source configured to drive the first pressure roller and the second pressure roller to approach and move away from each other in order to press and release the first film strip and the second film strip.

10. The reflective film and insulating film pressing mechanism according to any one of claims 1 to 9, characterized in that, The reflective film and insulating film pressing mechanism further includes a preheating component disposed on the mounting frame. The preheating component, the air blowing head and the pressing component are arranged sequentially at intervals along the conveying direction of the second film belt. The preheating component is disposed below the second guide channel. The preheating component includes at least one electric heater.

11. The reflective film and insulating film pressing mechanism according to any one of claims 1 to 9, characterized in that, The reflective film and insulating film pressing mechanism also includes a cooling assembly disposed on the mounting frame. The cooling assembly is disposed after the pressing assembly and is configured to cool the mixed film strip.

12. The reflective film and insulating film pressing mechanism according to any one of claims 1 to 9, characterized in that, The mounting frame is provided with a third support platform, which is located after the pressing assembly. The top surface of the third support platform is provided with a third guide channel for the mixing film belt to pass through. Alternatively, the mounting frame may be provided with a row of second support rollers, which are arranged in the rear section of the pressing assembly. Each second support roller has an annular groove on its circumferential surface, and the mixing film belt passes sequentially through the upper side of the annular groove on each of the second support rollers.

13. The reflective film and insulating film pressing mechanism according to any one of claims 1 to 9, characterized in that, Both the first guide channel and the second guide channel are covered by cover plates.

14. The reflective film and insulating film pressing mechanism according to any one of claims 1 to 9, characterized in that, The reflective film and insulating film pressing mechanism also includes a traction component, which is configured to pull the hybrid film strip along a set direction.

Images