Laminating unit and laminating machine

Abstract

The application provides a laminating unit and laminating machine. The laminating unit comprises a laminating assembly, a driving member, a driving roller, a driven roller, a first chain, a second chain, a conveying belt, a first tensioning assembly, a second tensioning assembly and an elastic connecting assembly. The conveying belt is sleeved on the driving roller and the driven roller, and the driven roller is adapted to move along a first direction to keep close to the conveying belt through the elastic connecting assembly. The first chain is sleeved on the sprocket at the first end of the driving roller and the driven roller, and the second chain is sleeved on the sprocket at the second end of the driving roller and the driven roller. The driving member is used to drive the driving roller to rotate to drive the conveying belt to rotate. The first tensioning assembly and the second tensioning assembly are connected to the first chain and the second chain. During the conveying process, the first tensioning assembly and the second tensioning assembly can pull and tension the conveying belt, so as to improve the tensioning degree of the conveying belt during the conveying process, avoid the sagging of the conveying belt and avoid the wrinkle of the conveying belt during the conveying process.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell production equipment technology, specifically a lamination unit and a laminator. Background Technology

[0002] In the production process of photovoltaic modules, a laminator is used to laminate the photovoltaic modules. The laminator uses a high temperature and high pressure process to tightly bond the materials such as solar cells, tempered glass, EVA film, and backsheet inside the photovoltaic module to form an overall structure with mechanical strength and long-term stability.

[0003] A newly proposed multi-layer laminator can simultaneously laminate multiple layers of photovoltaic modules, offering higher production efficiency compared to single-layer laminators. The multi-layer laminator comprises multiple lamination units arranged vertically in layers. Each lamination unit includes a lamination assembly and a closed-loop conveyor belt. The lamination assembly has a drive roller and a driven roller at both ends. The conveyor belt is fitted onto the drive roller and the driven roller and covers the lamination assembly. The conveyor belt transports the photovoltaic modules to be processed to the lamination station above the lamination assembly and outputs the processed photovoltaic modules.

[0004] The problem with existing lamination units is that the conveyor belt in the lamination unit is wrapped around the active roller and the driven roller. Because the distance between the active roller and the driven roller is relatively large and the size of the conveyor belt is large, the conveyor belt will deform due to its own weight after long-term use, causing the conveyor belt to loosen and sag. The loosened conveyor belt is also prone to wrinkling during operation, which eventually leads to indentations and deformation of the photovoltaic module after lamination. In severe cases, the photovoltaic module may even break. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a lamination unit, which adopts the following technical solution:

[0006] A lamination unit includes a lamination assembly, a drive component, a drive roller, a driven roller, a first chain, a second chain, a conveyor belt, a first tensioning assembly, a second tensioning assembly, and an elastic connecting assembly, wherein:

[0007] The drive roller is located at the first end of the laminating assembly, and the two ends of the driven roller are respectively installed at the second end of the laminating assembly via elastic connecting components. The conveyor belt is sleeved on the drive roller and the driven roller, and the driven roller achieves adaptive movement along the first direction via the elastic connecting components to keep it close to the conveyor belt.

[0008] Both ends of the driving roller and the driven roller are provided with sprockets along the second direction, which is perpendicular to the first direction;

[0009] The first chain is looped onto the sprocket at the first end of the driving roller and the driven roller;

[0010] The second chain is looped onto the sprocket at the second end of both the driving roller and the driven roller;

[0011] The drive unit is connected to the drive roller drive, and the drive unit is used to drive the drive roller to rotate, so as to drive the conveyor belt to rotate;

[0012] The first tensioning assembly includes a first pull rod, a first belt body, a second belt body, and several first elastic elements, wherein:

[0013] The two ends of the first pull rod are fixedly connected to the first chain and the second chain, respectively;

[0014] The first end of the first belt is fixedly connected to the conveyor belt located on the first side of the first pull rod, and the second end of the first belt is fixed to the first pull rod;

[0015] The first end of the second belt is fixedly connected to the conveyor belt located on the second side of the first pull rod, and the second end of the second belt is connected to the first pull rod via a number of first elastic elements;

[0016] Along the direction of rotation of the conveyor belt, the first side of the first tie rod is located behind the second side of the first tie rod;

[0017] The second tensioning assembly includes a second tie rod, a third belt, a fourth belt, and several second elastic elements, wherein:

[0018] The two ends of the second lever are fixedly connected to the first chain and the second chain, respectively;

[0019] The first end of the third belt is fixedly connected to the conveyor belt located on the first side of the second tie rod, and the second end of the third belt is fixed to the second tie rod.

[0020] The first end of the fourth belt is fixedly connected to the conveyor belt located on the second side of the second tie rod, and the second end of the fourth belt is connected to the second tie rod via several second elastic elements;

[0021] Along the direction of rotation of the conveyor belt, the first side of the second tie rod is located behind the second side of the second tie rod;

[0022] When the first tensioning assembly rotates to the first end of the laminating assembly under the drive of the first and second chains, the second tensioning assembly rotates to the second end of the laminating assembly.

[0023] The laminating unit provided in this application is equipped with a first tensioning component and a second tensioning component that move synchronously with the conveyor belt. During the conveying process, the first and second tensioning components can tension the conveyor belt. Furthermore, since the driven roller is adaptively movable along the first direction at the second end of the laminating unit via an elastic connecting component, it can adaptively move with the expansion and contraction of the conveyor belt to maintain close contact with it. Therefore, through the cooperation of the first tensioning component, the second tensioning component, and the driven roller, the laminating unit of this application can improve the tension of the conveyor belt during the conveying process, preventing the conveyor belt from becoming loose or sagging, and preventing wrinkles from forming during operation.

[0024] Furthermore, since the second tensioning assembly rotates to the other end of the laminating assembly when the first tensioning assembly rotates to one end, the first and second tensioning assemblies can be adjusted to either end of the laminating assembly during the lamination process, thus not affecting the lamination operation.

[0025] In some embodiments, the first tensioning assembly further includes a first pressure plate for pressing and fixing the second end of the first belt onto the first pull rod; the second tensioning assembly further includes a second pressure plate for pressing and fixing the second end of the third belt onto the second pull rod.

[0026] By setting the first pressure plate, the second end of the first belt is securely connected to the first pull rod. Similarly, by setting the second pressure plate, the second end of the third belt is securely connected to the second pull rod.

[0027] In some embodiments, the first tensioning assembly further includes a first crossbeam rod arranged along a second direction, a first insertion hole provided at the second end of the first belt body, the first crossbeam rod being inserted into the first insertion hole, and the first crossbeam rod pressing against the first pull rod and / or the first pressure plate; the second tensioning assembly further includes a second crossbeam rod arranged along a second direction, a second insertion hole provided at the second end of the third belt body, the second crossbeam rod being inserted into the second insertion hole, and the second crossbeam rod pressing against the second pull rod and / or the second pressure plate.

[0028] By setting the first crossbeam, the second end of the first belt body, which is pressed by the first pressure plate, is fixedly limited, preventing the first belt body from being pulled out of the first pressure plate and detached from the first tie rod due to excessive force. Similarly, by setting the second crossbeam, the second end of the third belt body, which is pressed by the second pressure plate, is fixedly limited, preventing the third belt body from being pulled out of the second pressure plate and detached from the second tie rod due to excessive force.

[0029] In some embodiments, the first tensioning assembly further includes a third crossbeam rod, the length direction of which is arranged along the second direction, a third insertion hole at the second end of the second belt body, the third crossbeam rod being inserted into the third insertion hole, and a plurality of first elastic members being spaced apart along the second direction, the first end of each first elastic member being connected to the third crossbeam rod and the second end of each first elastic member being connected to the first pull rod; the second tensioning assembly further includes a fourth crossbeam rod, the length direction of which is arranged along the second direction, a fourth insertion hole at the second end of the fourth belt body, the fourth crossbeam rod being inserted into the fourth insertion hole, and a plurality of second elastic members being spaced apart along the second direction, the first end of each second elastic member being connected to the fourth crossbeam rod and the second end of each second elastic member being connected to the second pull rod.

[0030] By providing a third crossbeam at the second end of the second belt, the connection between the second end of the second belt and the first elastic element is facilitated, ultimately ensuring a stable elastic connection between the second end of the second belt and the third crossbeam via the first elastic element. Similarly, by providing a fourth crossbeam at the second end of the fourth belt, the connection between the second end of the fourth belt and the second elastic element is facilitated, ultimately ensuring a stable elastic connection between the second end of the fourth belt and the fourth crossbeam via the second elastic element.

[0031] In some embodiments, the second end of the second belt is provided with a plurality of first clearance slots corresponding one-to-one with the first elastic members. The first clearance slots are used to expose the third crossbeam. The first tie rod is provided with a plurality of first connecting pins corresponding one-to-one with the first elastic members. The first end of the first elastic member is connected to the third crossbeam through the corresponding first clearance slot, and the second end of the first elastic member is connected to the corresponding first connecting pin. The second end of the fourth belt is provided with a plurality of second clearance slots corresponding one-to-one with the second elastic members. The second clearance slots are used to expose the fourth crossbeam. The second tie rod is provided with a plurality of second connecting pins corresponding one-to-one with the second elastic members. The first end of the second elastic member is connected to the fourth crossbeam through the corresponding second clearance slot, and the second end of the second elastic member is connected to the corresponding second connecting pin.

[0032] By providing a first clearance joint at the second end of the second belt, the connection between the first elastic element and the third crossbeam is facilitated. Similarly, by providing a first connecting pin on the first tie rod, the connection between the first elastic element and the first tie rod is facilitated. Likewise, by providing a second clearance joint at the second end of the fourth belt, the connection between the second elastic element and the fourth crossbeam is facilitated. Similarly, by providing a second connecting pin on the second tie rod, the connection between the second elastic element and the second tie rod is facilitated.

[0033] In some embodiments, the first end of the first belt body, the first end of the second belt body, the first end of the third belt body, and the first end of the fourth belt body are all bonded to the conveyor belt.

[0034] A convenient connection method is provided for each belt body to the conveyor belt, while ensuring connection strength.

[0035] In some embodiments, a plurality of stress relief holes are provided at positions near the first tensioning component and near the second tensioning component of the conveyor belt. The plurality of stress relief holes are spaced apart along the second direction, and each stress relief hole extends along the length direction of the conveyor belt.

[0036] By setting stress relief holes near the first tensioning assembly and near the second tensioning assembly on the conveyor belt, stress is prevented from accumulating at the tensioning positions of the first and second tensioning assemblies, thus avoiding damage to the conveyor belt.

[0037] In some embodiments, the resilient connection assembly includes a mounting bracket, a bolt, a spring, and a nut, wherein: the mounting bracket is fixedly connected to the end of the laminating assembly, and the mounting bracket is provided with a first waist hole extending in a first direction; the roller shaft of the driven roller passes through the first waist hole and can slide along the first waist hole, and the roller shaft of the driven roller is provided with a through hole for the bolt to pass through; the nut is disposed in the first waist hole and can slide along the first waist hole, the nut is located on the side of the roller shaft facing the driving roller, and the nut is provided with a threaded hole that matches the threaded section of the bolt; the bolt is disposed on the mounting bracket in the first direction, the head of the bolt is located outside the first waist hole, the threaded section of the bolt passes inward into the first waist hole, and passes through the through hole on the roller shaft before being screwed to the nut; the spring is sleeved on the bolt, and the two ends of the spring abut against the nut and the roller shaft, respectively.

[0038] An embodiment of a simple, flexible connection assembly is provided, which enables the driven roller to adaptively adjust in a first direction, ensuring that the driven roller is always in close contact with the conveyor belt.

[0039] In some embodiments, the mounting bracket includes a mounting plate, a mounting bracket, and a fixing plate. A first waist hole is disposed on the fixing plate, the fixing plate is fixedly connected to the mounting bracket, the mounting plate is fixedly connected to the end of the laminated assembly, and a second waist hole extending along a first direction is provided on the mounting plate. The mounting bracket is fixedly fixed to the mounting plate in an adjustable position along the first direction via the second waist hole.

[0040] By setting the mounting bracket, the mounting position of the mounting bracket in the first direction can be adjusted before lamination, so that the driven roller is pressed tightly against the conveyor belt before lamination.

[0041] This application also provides a laminator comprising a plurality of laminating units arranged vertically in layers as described in any of the above claims, wherein when two adjacent laminating units are closed, a photovoltaic module on the lower laminating unit is laminated.

[0042] The laminator provided in this application allows multiple lamination units to simultaneously laminate multiple photovoltaic modules, thereby improving lamination efficiency. Attached Figure Description

[0043] Figure 1 This is a front structural diagram of a laminated unit according to an embodiment of this application;

[0044] Figure 2 for Figure 1 A magnified view of region A in the image;

[0045] Figure 3 for Figure 1 A magnified view of region B in the image;

[0046] Figure 4 This is a schematic diagram of the back structure of the laminating unit in an embodiment of this application;

[0047] Figure 5 for Figure 4 A magnified view of region C in the image;

[0048] Figure 6 for Figure 4 A magnified view of region D in the image;

[0049] Figure 7 This is a schematic diagram of the structure of the laminator according to an embodiment of this application;

[0050] Figure 8 for Figure 7 A magnified view of region E in the image;

[0051] Figure 9 This is a schematic diagram of the structure of the elastic connection component in another embodiment of this application;

[0052] Figure 10 This is a cross-sectional structural diagram of the laminator according to an embodiment of this application.

[0053] Figures 1 to 10 Includes:

[0054] Lamination unit 10, lamination assembly 11;

[0055] Drive component 1;

[0056] Active roller 2;

[0057] Driven roller 3: Roller shaft 31;

[0058] First chain 4;

[0059] Second chain 5;

[0060] Conveyor belt 6, stress relief holes 61;

[0061] First tensioning assembly 7, first tie rod 71, first belt body 72, second belt body 73, first elastic element 74, first pressure plate 75, first crossbeam 76, third crossbeam 77, first clearance joint 78, first connecting pin 79;

[0062] Second tensioning assembly 8, second tie rod 81, third belt body 82, fourth belt body 83, second elastic element 84, second pressure plate 85, second crossbeam 86, fourth crossbeam 87, second clearance joint 88, second connecting pin 89.

[0063] Elastic connection assembly 9, mounting bracket 91, bolt 92, spring 93, nut 94, first waist hole 95, mounting plate 911, mounting bracket 912, baffle 9121, connecting plate 9122, fixing plate 913, fixing seat 96, guide rod 97, linear bearing 98, spring 99, sliding seat 910. Detailed Implementation

[0064] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] The problem with existing lamination units is that the conveyor belt in the lamination unit is wrapped around the active roller and the driven roller. Because the distance between the active roller and the driven roller is relatively large and the size of the conveyor belt is large, the conveyor belt will deform due to its own weight after long-term use, causing the conveyor belt to loosen and sag. The loosened conveyor belt is also prone to wrinkling during operation, which eventually leads to indentations and deformation of the photovoltaic module after lamination. In severe cases, the photovoltaic module may even break.

[0066] To address this, this application provides a lamination unit that can improve the tension of the conveyor belt during the conveying process, prevent the conveyor belt from becoming loose or sagging, and prevent the conveyor belt from wrinkling during operation. Figures 1 to 6 The structure of the lamination unit 10 in an embodiment of this application is shown.

[0067] like Figures 1 to 6 As shown, the lamination unit 10 of this application includes a lamination assembly 11, a driving component 1, a driving roller 2, a driven roller 3, a first chain 4, a second chain 5, a conveyor belt 6, a first tensioning assembly 7, a second tensioning assembly 8, and an elastic connecting assembly 9, wherein:

[0068] The drive roller 2 is located at the first end of the laminating assembly 11, and the two ends of the driven roller 3 are respectively installed at the second end of the laminating assembly 11 via the elastic connecting assembly 9. The conveyor belt 6 is sleeved on the drive roller 2 and the driven roller 3, and the driven roller 3 achieves adaptive movement along the first direction via the elastic connecting assembly 9 to keep it close to the conveyor belt 6.

[0069] The first direction (e.g., the X direction) is the length direction of the conveyor belt 6. The laminating assembly 11 generally includes a heating plate and a pressure plate. The pressure plate is connected to the lower side of the heating plate and can move up and down relative to the heating plate. A sealed upper chamber is formed between the upper side of the pressure plate and the lower side of the heating plate, and an open lower chamber is formed on the lower side of the pressure plate. A first vent is provided on the side wall of the upper chamber to connect the upper chamber to the outside, and a second vent is provided on the upper side of the heating plate. The conveyor belt 6 covers the heating plate and the pressure plate. The pressure plate is used to press the photovoltaic module. The pressure plate can be a silicone plate or a metal plate, etc.

[0070] Both ends of the driving roller 2 and the driven roller 3 along the second direction (such as the Y direction) are provided with sprockets. The second direction is perpendicular to the first direction, that is, the second direction is the width direction of the conveyor belt 6.

[0071] The first chain 4 is sleeved on the sprockets at the first end of the driving roller 2 and the driven roller 3. The second chain 5 is sleeved on the sprockets at the second end of the driving roller 2 and the driven roller 3. That is to say, the driven roller 3 is connected to the driving roller 2 via the first chain 4 and the second chain 5, so that the driving roller 2 can drive the driven roller 3 to rotate synchronously.

[0072] The drive unit 1 is connected to the drive roller 2 for transmission. The drive unit 1 is used to drive the drive roller 2 to rotate, thereby driving the conveyor belt 6 to rotate. The drive unit 1 can be, for example, a servo motor.

[0073] Specifically, the spacing between the first tensioning component 7 and the second tensioning component 8 is set. When the first tensioning component 7 rotates to the first end (e.g., the right end) of the laminating component 11 under the drive of the first chain 4 and the second chain 5, the second tensioning component 8 rotates to the second end (e.g., the left end) of the laminating component 11. Conversely, when the first tensioning component 7 rotates to the second end (e.g., the left end) of the laminating component 11, the second tensioning component 8 rotates to the first end (e.g., the right end) of the laminating component 11.

[0074] The first tensioning assembly 7 includes a first pull rod 71, a first belt body 72, a second belt body 73, and a plurality of first elastic elements 74, wherein: the two ends of the first pull rod 71 are fixedly connected to the first chain 4 and the second chain 5, respectively. The first end of the first belt body 72 is fixedly connected to the conveyor belt 6 located on the first side of the first pull rod 71, and the second end of the first belt body 72 is fixed to the first pull rod 71. The first end of the second belt body 73 is fixedly connected to the conveyor belt 6 located on the second side of the first pull rod 71, and the second end of the second belt body 73 is connected to the first pull rod 71 via a plurality of first elastic elements 74.

[0075] Specifically, along the rotation direction of the conveyor belt 6, the first side of the first pull rod 71 is located behind the second side of the first pull rod 71. For example, as Figure 2 and Figure 5As shown by the dashed arrow, conveyor belt 6 rotates clockwise. Figure 2 and Figure 5 In the indicated state, the first tensioning component 7 has just moved to the first end (e.g., the right end) of the laminating component 11. At this time, the first side of the first pull rod 71 is its upper side, and the second side of the first pull rod 71 is its lower side. When the first tensioning component 7 moves to the upper side of the laminating component 11, the first side of the first pull rod 71 is its left side, and the second side of the first pull rod 71 is its right side. When the first tensioning component 7 moves to the lower side of the laminating component 11, the first side of the first pull rod 71 is its right side, and the second side of the first pull rod 71 is its left side.

[0076] The second tensioning assembly 8 includes a second pull rod 81, a third belt body 82, a fourth belt body 83, and a plurality of second elastic elements 84, wherein: the two ends of the second pull rod 81 are fixedly connected to the first chain 4 and the second chain 5, respectively; the first end of the third belt body 82 is fixedly connected to the conveyor belt 6 located on the first side of the second pull rod 81, and the second end of the third belt body 82 is fixed to the second pull rod 81; the first end of the fourth belt body 83 is fixedly connected to the conveyor belt 6 located on the second side of the second pull rod 81, and the second end of the fourth belt body 83 is connected to the second pull rod 81 via a plurality of second elastic elements 84.

[0077] Specifically, along the rotation direction of the conveyor belt 6, the first side of the second tie rod 81 is located behind the second side of the second tie rod 81. For example, as Figure 3 and Figure 6 As shown by the dashed arrow, conveyor belt 6 rotates clockwise. Figure 3 and Figure 6 In the indicated state, the second tensioning component 8 has just moved to the second end (e.g., the left end) of the laminating component 11. Furthermore, the first side of the second pull rod 81 is its lower side, and the second side of the second pull rod 81 is its upper side. When the second tensioning component 8 moves to the upper side of the laminating component 11, the first side of the second pull rod 81 is its left side, and the second side of the second pull rod 81 is its right side; when the second tensioning component 8 moves to the lower side of the laminating component 11, the first side of the second pull rod 81 is its right side, and the second side of the second pull rod 81 is its left side.

[0078] The laminating unit 10 provided in this application is provided with a first tensioning component 7 and a second tensioning component 8 that move synchronously with the conveyor belt 6. During the conveying process, the first tensioning component 7 and the second tensioning component 8 can pull and tension the conveyor belt 6. In addition, since the driven roller 3 is disposed at the second end of the laminating component 11 via the elastic connecting component 9 to achieve adaptive movement along the first direction, the driven roller 3 can adaptively move with the extension and contraction of the conveyor belt 6 to keep it in close contact with the conveyor belt 6.

[0079] As can be seen, through the cooperation of the first tensioning component 7, the second tensioning component 8, and the driven roller 3, the lamination unit 10 of this application can improve the tension of the conveyor belt 6 during the conveying process, preventing the conveyor belt 6 from becoming loose or sagging, and preventing wrinkles from forming on the conveyor belt 6 during operation. Furthermore, since the second tensioning component 8 rotates to the other end of the lamination assembly 11 when the first tensioning component 7 rotates to one end, the first tensioning component 7 and the second tensioning component 8 rotate to the two ends of the lamination assembly before the capping lamination is performed, thus not affecting the lamination operation.

[0080] Furthermore, by configuring the first tensioning component 7 and the second tensioning component 8, the following can be achieved:

[0081] The first belt body 72 pulls one end of the first half (e.g., the upper half in the figure) of the conveyor belt 6 forward in the direction of travel. At the same time, the fourth belt body 83 and the second elastic member 84 cooperate to pull the other end of the first half of the conveyor belt 6 in the opposite direction, thereby ensuring the tension effect on the first half of the conveyor belt 6.

[0082] Similarly, the third belt body 82 pulls one end of the second half of the conveyor belt 6 (e.g., the lower half in the figure) forward in the forward direction of the conveyor belt 6. At the same time, the second belt body 73 and the first elastic element 74 cooperate to pull the other end of the second half of the conveyor belt 6 in the opposite direction, thereby ensuring the tension effect on the second half of the conveyor belt 6.

[0083] In other words, in this application, the first tensioning component 7 and the second pressing component 8 cooperate with each other to tighten the first half and the second half of the conveyor belt 6 in opposite directions at both ends, thereby ensuring the overall tensioning effect of the conveyor belt 6.

[0084] The first elastic element 74 and the second elastic element 84 can be adopted as follows: Figure 3 The rubber strip or elastic cord shown are elastic components.

[0085] The lamination mechanism 10 of this application can be applied to a laminator, which includes lamination units 10 arranged in layers from top to bottom for laminating multilayer photovoltaic modules. Its general working process is as follows:

[0086] In the initial state, the laminator is in the open position, and adjacent lamination units 10 are separated. In addition, the first tensioning assembly 7 and the second tensioning assembly 8 of each lamination unit 10 are located at both ends of the lamination assembly 11.

[0087] The feeding conveyor system connects each layer of the conveyor line to the input end (e.g., the left end) of each lamination unit 10, and conveys the photovoltaic modules to be laminated towards each lamination unit 10. Simultaneously, the conveyor belt 6 of each lamination unit 10 is rotated, allowing the photovoltaic modules to enter the conveyor belt 6 and be conveyed towards the lamination position under the drive of the conveyor belt 6. When the photovoltaic modules are in place, the conveyor belt 6 stops conveying. At this time, the first tensioning component 7 and the second tensioning component 8 exchange positions, so that the first tensioning component 7 and the second tensioning component 8 remain at the two ends of the lamination component 11.

[0088] By drawing a vacuum into the upper chamber through the first vent of each lamination unit 10, the pressure plate of each lamination unit 10 moves upward to a certain extent, ensuring that the height of the lower chamber of each lamination unit 10 is sufficient to accommodate the photovoltaic module and preventing the pressure plate from contacting the photovoltaic module prematurely.

[0089] Subsequently, the laminator is closed, causing adjacent lamination units 10 to overlap. The lower chamber is sealed by the lamination unit 10 below it, and the photovoltaic module is located in the sealed lower chamber.

[0090] Next, a vacuum is also created in the lower chamber through the second vent of each lamination unit 10. Specifically, the upper chamber of each lamination unit 10 is evacuated through its own first vent, while the lower chamber of each lamination unit 10 is evacuated through the second vent of its adjacent lower lamination unit 10. Simultaneously, the heating plates of each lamination unit 10 heat the photovoltaic module, causing the encapsulant film in the photovoltaic module to melt and air bubbles to be extracted.

[0091] Next, the upper chamber of each lamination unit 10 stops being evacuated and is filled with air through the first vent, while the lower chamber remains evacuated. Since the upper side of the pressure plate is under positive pressure and the lower side is under negative pressure, the pressure plate moves downward, making contact with the photovoltaic module and pressing it downward to satisfy the physicochemical process of the photovoltaic module lamination process.

[0092] After lamination is completed, the laminator is opened, causing the adjacent lamination units 10 to separate again.

[0093] The conveyor lines of the unloading conveyor mechanism are connected to the unloading ends (e.g., the right end) of each lamination unit 10. The conveyor belts 6 of each lamination unit 10 are rotated, so that the photovoltaic modules on the conveyor belts 6 of each lamination unit 10 are transported and transferred to the conveyor lines of the unloading conveyor mechanism. The first tensioning component 7 and the second tensioning component 8 exchange positions again, returning to the initial state, that is, the first tensioning component 7 and the second tensioning component 8 are both located at the two ends of the lamination component 11.

[0094] like Figure 2As shown. In some embodiments, the first tensioning assembly 7 further includes a first pressure plate 75, which is used to press and fix the second end of the first belt body 72 onto the first pull rod 71. For example, the first pressure plate 75 is screwed onto the first pull rod 71 by a first screw. During installation, the second end of the first belt body 72 is first pulled onto the first pull rod 71, and then the first pressure plate 75 is pressed onto the first belt body 72 and locked onto the first pull rod 71.

[0095] By setting the first pressure plate 75, it can be ensured that the second end of the first belt 72 is firmly connected to the first pull rod 71.

[0096] like Figure 6 As shown, in some embodiments, the second tensioning assembly 8 further includes a second pressure plate 85, which is used to press and fix the second end of the third belt 82 onto the second pull rod 81. For example, the second pressure plate 85 is screwed onto the second pull rod 81 by a second screw. During installation, the second end of the third belt 82 is first pulled onto the second pull rod 81, and then the second pressure plate 85 is pressed onto the third belt 82 and locked onto the second pull rod 81.

[0097] By setting the second pressure plate 85, it can be ensured that the second end of the third belt 82 is firmly connected to the second pull rod 81.

[0098] like Figure 5 As shown, in some embodiments, the first tensioning assembly 7 further includes a first crossbeam 76, which is arranged along a second direction. The second end of the first belt 72 has a first insertion hole, and the first crossbeam 76 is inserted into the first insertion hole, pressing against the first pull rod 71 and / or the first pressure plate 75. For example, during installation, the first crossbeam 76 is first inserted into the first insertion hole, then the first crossbeam 76 is pulled so that the second end of the first belt 72 abuts against the first pull rod 71, and then the first pressure plate 75 is pressed onto the first belt 72 and locked onto the first pull rod 71. At this time, the first crossbeam 76 is limited to one side of the first pressure plate 75.

[0099] By setting the first crossbeam 76, it is convenient to tighten and flatten the first belt 72, avoid wrinkles when the first belt 72 is fixed, and achieve the fixed limit of the second end of the first belt 72 pressed by the first pressure plate 75, so as to prevent the first belt 72 from being pulled out of the first pressure plate 75 and detached from the first pull rod 71 due to excessive force.

[0100] The second tensioning assembly 8 also includes a second crossbeam 86, which is arranged along a second direction. The second end of the third belt 82 is provided with a second insertion hole, and the second crossbeam 86 is inserted into the second insertion hole. The second crossbeam 86 presses against the second pull rod 81 and / or the second pressure plate 85. For example, the second crossbeam 86 is first inserted into the second insertion hole, and then the second crossbeam 86 is pulled so that the second end of the third belt 82 is against the second pull rod 81. Then the second pressure plate 85 is pressed onto the third belt 82 and locked onto the second pull rod 81.

[0101] By setting the second crossbeam 86, it is convenient to tighten and flatten the third belt 82, avoid wrinkles when the third belt 82 is fixed, and achieve the fixed limit of the second end of the third belt 82 pressed by the second pressure plate 85, so as to prevent the third belt 82 from being pulled out of the second pressure plate 85 and detached from the second pull rod 81 due to excessive force.

[0102] like Figure 5 As shown, in some embodiments, the first tensioning assembly 7 further includes a third crossbeam 77, the length direction of the third crossbeam 77 is arranged along the second direction, the second end of the second belt 73 is provided with a third insertion hole, the third crossbeam 77 is inserted into the third insertion hole, and a plurality of first elastic members 74 are spaced apart along the second direction, the first end of the first elastic member 74 is connected to the third crossbeam 77, and the second end of the first elastic member 74 is connected to the first pull rod 71.

[0103] By setting a third crossbeam 77 at the second end of the second belt 73, the connection between the second end of the second belt 73 and the first elastic member 74 is facilitated, and ultimately a stable elastic connection is formed between the second end of the second belt 73 and the third crossbeam 77 via the first elastic member 74.

[0104] Similarly, such as Figure 3 As shown, in some embodiments, the second tensioning assembly 8 further includes a fourth crossbeam 87, the length direction of the fourth crossbeam 87 is arranged along the second direction, the second end of the fourth belt body 83 is provided with a fourth insertion hole, the fourth crossbeam 87 is inserted into the fourth insertion hole, and a plurality of second elastic members 84 are spaced apart along the second direction, the first end of the second elastic member 84 is connected to the fourth crossbeam 87, and the second end of the second elastic member 84 is connected to the second pull rod 81.

[0105] By setting a fourth crossbeam 87 at the second end of the fourth belt body 83, the connection between the second end of the fourth belt body 83 and the second elastic member 84 is facilitated, and ultimately a stable elastic connection is formed between the second end of the fourth belt body 83 and the fourth crossbeam 87 via the second elastic member 84.

[0106] like Figure 5As shown, in some embodiments, the second end of the second belt 73 is provided with a plurality of first clearance slots 78 corresponding one-to-one with the first elastic member 74. The first clearance slots 78 are used to expose the third crossbeam 77. The first tie rod 71 is provided with a plurality of first connecting pins 79 corresponding one-to-one with the first elastic member 74. The first end of the first elastic member 74 is connected to the third crossbeam 77 through the corresponding first clearance slots 78, and the second end of the first elastic member 74 is connected to the corresponding first connecting pin 79.

[0107] By providing a first clearance slot 78 at the second end of the second belt 73, the connection between the first elastic element 74 and the third crossbeam 77 is facilitated. By providing a first connecting pin 79 on the first tie rod 71, the connection between the first elastic element 74 and the first tie rod 71 is also facilitated.

[0108] Similarly, such as Figure 3 As shown, the second end of the fourth belt body 83 is provided with a plurality of second clearance slots 88 corresponding one-to-one with the second elastic member 84. The second clearance slots 88 are used to expose the fourth crossbeam rod 87. The second tie rod 81 is provided with a plurality of second connecting pins 89 corresponding one-to-one with the second elastic member 84. The first end of the second elastic member 84 is connected to the fourth crossbeam rod 87 through the corresponding second clearance slot 88, and the second end of the second elastic member 84 is connected to the corresponding second connecting pin 89.

[0109] By providing a second clearance slot 88 at the second end of the fourth belt body 83, the connection between the second elastic element 84 and the fourth crossbeam 87 is facilitated. By providing a second connecting pin 89 on the second tie rod 81, the connection between the second elastic element 84 and the second tie rod 81 is also facilitated.

[0110] In some embodiments, the widths of the first belt body 72, the second belt body 73, the third belt body 82, and the fourth belt body 83 along the second direction are all equal to the width of the conveyor belt 6 along the second direction. The first ends of the first belt body 72, the second belt body 73, the third belt body 82, and the fourth belt body 83 are all bonded to the conveyor belt 6. Specifically, this bonding can be achieved using a cast film or other adhesives.

[0111] The first tape body 72 and the third tape body 82 are the same size and style, both being sheet-like tape bodies. The second end of the first tape body 72 is wound around and glued to form a first insertion hole. The second end of the third tape body 82 is wound around and glued to form a second insertion hole.

[0112] The second belt 73 and the fourth belt 83 are the same size and style, and are both formed by folding a sheet-like belt in half from the middle.

[0113] The first end of the second belt body 73 formed after folding is attached to the conveyor belt 6. The second end of the second belt body 73 is the folded part, and a third insertion hole is formed at the folded part. The third crossbeam 77 is inserted into the third insertion hole. The first elastic element 74 can be a rubber strip with a certain elasticity and the two ends of the rubber strip are formed with bushings. One end of the first elastic element 74 is sleeved on the third crossbeam 77, and the other end of the first elastic element 74 is sleeved on the first connecting pin 79.

[0114] The first end of the fourth belt body 83, formed after folding, is attached to the conveyor belt 6. The second end of the fourth belt body 83 is the folded point, where a fourth insertion hole is formed. The fourth crossbeam 87 is inserted into the fourth insertion hole. The second elastic element 84 can be a rubber strip with a certain elasticity, and both ends of the rubber strip form bushings. One end of the second elastic element 84 is sleeved on the fourth crossbeam 87, and the other end of the second elastic element 84 is sleeved on the second connecting pin 89.

[0115] To improve the adhesive effect, the first belt body 72, the second belt body 73, the third belt body 82 and the fourth belt body 83 in this application can all be made of the same material as the conveyor belt.

[0116] like Figures 1 to 6 As shown. In some embodiments, a plurality of stress relief holes 61 are provided on the conveyor belt 6 near the first tensioning component 7 and near the second tensioning component 8. The plurality of stress relief holes 61 are spaced apart along the second direction, and each stress relief hole 61 extends along the length direction of the conveyor belt 6.

[0117] By setting stress relief holes 61 near the first tensioning component 7 and near the second tensioning component 8 on the conveyor belt 6, stress is prevented from accumulating at the tensioning positions of the first tensioning component 7 and the second tensioning component 8, which could cause damage to the conveyor belt 6. In addition, it can also ensure that the conveyor belt 6 between the two stress relief holes 61 remains flat, that is, the photovoltaic module is supported by a relatively flat conveyor belt 6 during lamination, thus preventing damage to the photovoltaic module during lamination.

[0118] like Figure 3 , Figure 6 and Figure 8As shown, in some embodiments, the elastic connection assembly 9 includes a mounting bracket 91, a bolt 92, a spring 93, and a nut 94, wherein: the mounting bracket 91 is fixedly connected to the end of the laminating assembly 11, and the mounting bracket 91 is provided with a first waist hole 95 extending in a first direction. The roller shaft 31 of the driven roller 3 passes through the first waist hole 95 and can slide along the first waist hole 95, and the roller shaft 31 of the driven roller 3 is provided with a through hole for the bolt 92 to pass through. The nut 94 is disposed in the first waist hole 95 and can slide along the first waist hole 95. The nut 94 is located on the side of the roller shaft 31 facing the driving roller 2, and the nut 94 is provided with a threaded hole that matches the threaded section of the bolt 92. The bolt 92 is disposed on the mounting bracket 91 in the first direction, the head of the bolt 92 is located outside the first waist hole 95 (away from the driving roller 2), the threaded section of the bolt 92 passes inward into the first waist hole 95, and after passing through the through hole on the roller shaft 31, it is screwed to the nut 94. Spring 93 is sleeved on bolt 92, and the two ends of spring 93 abut against nut 94 and roller 31 respectively.

[0119] When the tension of the conveyor belt 6 is moderate (balanced state), the inward thrust (i.e. towards the driving roller 2) applied by the conveyor belt 6 to the driven roller 3 is equal in magnitude to the outward thrust (i.e. away from the driving roller 2) applied by the spring 93 to the driven roller 3, and the driven roller 3 is stationary.

[0120] When the tension of the conveyor belt 6 increases, the thrust exerted by the conveyor belt 6 on the driven roller 3 is greater than the thrust exerted by the spring 93 on the driven roller 3, thereby pushing the driven roller 3 towards the driving roller 2 until the driven roller 3 is compressed and returns to balance. On the one hand, this ensures that the driven roller 3 remains close to the conveyor belt 6, and on the other hand, it relieves the excessive tension of the conveyor belt 6, preventing the conveyor belt 6 from being damaged due to excessive tension.

[0121] When the tension of the conveyor belt 6 decreases and it becomes loose, the thrust exerted by the conveyor belt 6 on the driven roller 3 is less than the thrust exerted by the spring 93 on the driven roller 3. The spring 93 extends, thereby pushing the driven roller 3 away from the driving roller 2 until the driven roller 3 is pressed and returns to balance, and the driven roller 3 is pressed against the conveyor belt 6 again.

[0122] This allows for dynamic adjustment of the tension of the conveyor belt 6, ensuring that the driven roller 3 remains firmly attached to the conveyor belt 6.

[0123] Furthermore, since both ends of the driven roller 3 are connected to the laminating assembly 11 via elastic connecting components 9, the elastic connecting components 9 at both ends simultaneously implement adaptive adjustment of the driven roller 3 to prevent the driven roller 3 from tilting.

[0124] like Figure 3As shown, in some embodiments, the mounting bracket 91 includes a mounting plate 911, a mounting bracket 912, and a fixing plate 913. A first waist hole 95 is provided on the fixing plate 913. The fixing plate 913 is fixedly connected to the mounting bracket 912. The mounting plate 911 is fixedly connected to the end of the laminating assembly 11. A second waist hole 914 extending along a first direction is provided on the mounting plate 911. The mounting bracket 912 is adjustablely fixed to the mounting plate 911 along the first direction via the second waist hole 914.

[0125] Specifically, such as Figure 8 As shown, the mounting bracket 912 includes a vertical baffle 9121 and two parallel, vertically arranged connecting plates 9122. One end of each connecting plate 9122 is perpendicularly connected to a fixing plate 913, and the other end of each connecting plate 9122 is perpendicularly connected to the baffle 9121. The connecting plates 9122 pass through the second oblong hole 914, and the baffle 9121 is locked to the upper and lower end faces of the second oblong hole 914 by bolts. A row of threaded holes can be provided on the upper and lower end faces of the second oblong hole 914 to adjust the installation position of the baffle 9121, so that the position of the mounting bracket 912 is adjustable in the first direction.

[0126] By configuring the mounting bracket 91 as described above, before lamination, the mounting position of the mounting bracket 912 in the first direction can be adjusted according to the tension of the conveyor belt 6, so that the driven roller 3 is in close contact with the conveyor belt 6 before lamination. Specifically, after the mounting bracket 912 is slidably adjusted into place along the second waist hole 914, the mounting bracket 912 is fixed in place with bolts.

[0127] Of course, the elastic connection component 9 can also be implemented in other ways, as long as it enables the driven roller 3 to move adaptively along the first direction to fit the conveyor belt.

[0128] For example, in another embodiment, such as Figure 9 As shown, the elastic connection assembly 9 includes a fixed seat 96, a guide rod 97, a linear bearing 98, a spring 99, and a sliding seat 910. The fixed seat 96 is fixedly disposed at the end of the laminating assembly 11, and the linear bearing 98 is press-fitted onto the fixed seat 96 along a first direction. The guide rod 97 passes through the linear bearing 98 and is slidable along the first direction. The sliding seat 910 is slidably connected to the end of the laminating assembly 11 and fixedly connected to one end of the guide rod 97. The end of the driven roller 3 is mounted on the sliding seat 910. The spring 99 is sleeved on the guide rod 97, with its two ends abutting against the sliding seat 910 and the fixed seat 96, respectively. When the conveyor belt 6 slackens, the spring 99 pushes the sliding seat 910 and the driven roller 3 away from the driving roller 2, thereby causing the driven roller 3 to re-adhere to the conveyor belt 6.

[0129] Based on the same concept, this application also provides a laminator. For example... Figure 10 As shown, it includes a plurality of lamination units 10 provided in any of the above embodiments, arranged in a vertical layer. When two adjacent lamination units are closed, the photovoltaic module on the lower lamination unit 10 is laminated.

[0130] The laminator of this application can simultaneously laminate multiple photovoltaic modules, thereby improving lamination efficiency.

[0131] The foregoing has provided a sufficiently detailed and specific description of this application. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, not by the above descriptions in the embodiments. Furthermore, the embodiments mentioned in this application are not limited to a single implementation; some embodiments can also be combined.

Claims

1. A laminated unit, characterized in that, The lamination unit includes a lamination assembly, a driving component, a driving roller, a driven roller, a first chain, a second chain, a conveyor belt, a first tensioning assembly, a second tensioning assembly, and an elastic connecting assembly, wherein: The active roller is disposed at the first end of the laminating assembly, and the two ends of the driven roller are respectively mounted at the second end of the laminating assembly via the elastic connecting assembly. The conveyor belt is sleeved on the active roller and the driven roller, and the driven roller achieves adaptive movement along the first direction via the elastic connecting assembly to keep it close to the conveyor belt. Both ends of the driving roller and the driven roller are provided with sprockets along the second direction, which is perpendicular to the first direction; The first chain is sleeved on the sprocket at the first end of the driving roller and the driven roller; The second chain is sleeved on the sprocket at the second end of the driving roller and the driven roller; The driving component is connected to the drive roller, and the driving component is used to drive the drive roller to rotate, so as to drive the conveyor belt to rotate. The first tensioning assembly includes a first pull rod, a first belt, a second belt, and a plurality of first elastic elements, wherein: The two ends of the first pull rod are fixedly connected to the first chain and the second chain, respectively; The first end of the first belt is fixedly connected to the conveyor belt located on the first side of the first pull rod, and the second end of the first belt is fixed to the first pull rod; The first end of the second belt is fixedly connected to the conveyor belt located on the second side of the first pull rod, and the second end of the second belt is connected to the first pull rod via a plurality of the first elastic elements; Along the rotation direction of the conveyor belt, the first side of the first pull rod is located behind the second side of the first pull rod; The second tensioning assembly includes a second pull rod, a third belt, a fourth belt, and several second elastic elements, wherein: The two ends of the second pull rod are fixedly connected to the first chain and the second chain, respectively; The first end of the third belt is fixedly connected to the conveyor belt located on the first side of the second pull rod, and the second end of the third belt is fixed to the second pull rod; The first end of the fourth belt is fixedly connected to the conveyor belt located on the second side of the second pull rod, and the second end of the fourth belt is connected to the second pull rod via a plurality of second elastic elements; Along the rotation direction of the conveyor belt, the first side of the second tie rod is located behind the second side of the second tie rod; When the first tensioning component rotates to the first end of the laminating component under the drive of the first chain and the second chain, the second tensioning component rotates to the second end of the laminating component.

2. The laminating unit as described in claim 1, characterized in that: The first tensioning assembly further includes a first pressure plate, which is used to press and fix the second end of the first belt body onto the first pull rod; The second tensioning assembly further includes a second pressure plate, which is used to press and fix the second end of the third belt onto the second pull rod.

3. The laminating unit as described in claim 2, characterized in that: The first tensioning assembly further includes a first crossbeam rod, which is arranged along the second direction. The second end of the first belt body is provided with a first insertion hole. The first crossbeam rod is inserted into the first insertion hole and presses against the first pull rod and / or the first pressure plate. The second tensioning assembly further includes a second crossbeam rod, which is arranged along the second direction. The second end of the third belt body is provided with a second insertion hole. The second crossbeam rod is inserted into the second insertion hole and presses against the second tie rod and / or the second pressure plate.

4. The laminating unit as described in claim 1, characterized in that: The first tensioning assembly further includes a third crossbeam rod, the length direction of which is arranged along the second direction. The second end of the second belt body is provided with a third insertion hole, and the third crossbeam rod is inserted into the third insertion hole. A plurality of first elastic elements are spaced apart along the second direction. The first end of the first elastic element is connected to the third crossbeam rod, and the second end of the first elastic element is connected to the first pull rod. The second tensioning assembly further includes a fourth crossbeam rod, the length of which is arranged along the second direction. The second end of the fourth belt body is provided with a fourth insertion hole, and the fourth crossbeam rod is inserted into the fourth insertion hole. A plurality of second elastic elements are spaced apart along the second direction. The first end of the second elastic element is connected to the fourth crossbeam rod, and the second end of the second elastic element is connected to the second pull rod.

5. The laminating unit as described in claim 4, characterized in that: The second end of the second belt is provided with a plurality of first clearance slots corresponding to the first elastic element. The first clearance slots are used to expose the third crossbeam. The first tie rod is provided with a plurality of first connecting pins corresponding to the first elastic element. The first end of the first elastic element is connected to the third crossbeam through the corresponding first clearance slot. The second end of the first elastic element is connected to the corresponding first connecting pin. The second end of the fourth belt is provided with a plurality of second clearance slots corresponding to the second elastic members. The second clearance slots are used to expose the fourth crossbeam. The second tie rod is provided with a plurality of second connecting pins corresponding to the second elastic members. The first end of the second elastic member is connected to the fourth crossbeam through the corresponding second clearance slot, and the second end of the second elastic member is connected to the corresponding second connecting pin.

6. The laminating unit as described in claim 1, characterized in that, The first end of the first belt, the first end of the second belt, the first end of the third belt, and the first end of the fourth belt are all bonded to the conveyor belt.

7. The laminating unit as described in claim 1, characterized in that: The conveyor belt is provided with a plurality of stress relief holes at positions near the first tensioning component and near the second tensioning component. The plurality of stress relief holes are spaced apart along the second direction, and each stress relief hole extends along the length direction of the conveyor belt.

8. The laminating unit as described in claim 1, characterized in that, The elastic connection assembly includes a mounting bracket, bolts, springs, and nuts, wherein: The mounting bracket is fixedly connected to the end of the laminating assembly, and the mounting bracket is provided with a first waist hole extending along the first direction; The driven roller shaft passes through the first waist hole and can slide along the first waist hole. The driven roller shaft is provided with a through hole for the bolt to pass through. The nut is disposed in the first waist hole and can slide along the first waist hole. The nut is located on the side of the roller shaft facing the drive roller. The nut has a threaded hole that matches the threaded section of the bolt. The bolt is disposed on the mounting bracket along the first direction, the head of the bolt is located outside the first waist hole, the threaded section of the bolt is inserted into the first waist hole, and after passing through the through hole on the roller shaft, it is screwed to the nut. The spring is sleeved on the bolt, and the two ends of the spring abut against the nut and the roller, respectively.

9. The lamination unit as described in claim 8, characterized in that, The mounting bracket includes a mounting plate, a mounting bracket, and a fixing plate. The first waist hole is disposed on the fixing plate. The fixing plate is fixedly connected to the mounting bracket. The mounting plate is fixedly connected to the end of the laminating assembly. The mounting plate is provided with a second waist hole extending along the first direction. The mounting bracket is fixedly fixed to the mounting plate in an adjustable position along the first direction via the second waist hole.

10. A laminator, characterized in that, The laminator includes a plurality of lamination units arranged vertically in layers as described in any one of claims 1 to 9; When two adjacent lamination units are closed, the photovoltaic module on the lower lamination unit is laminated.

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