Laminated piece adhesive tape removing process for recycling photovoltaic module

Abstract

The invention discloses a laminated part adhesive tape removing process for photovoltaic module recovery. The laminated part adhesive tape removing process comprises the following steps: S1, feeding; s2, removing adhesive tapes on long and short edges; and S3, discharging. According to the invention, on one hand, the missing removal rate of the adhesive tape or the edge damage of the laminated piece caused by the deformation of the laminated piece is eliminated based on rolling and leveling, and the adhesive tape removal process of both long edges and short edges is carried out under rolling, so that the deviation rate of the laminated piece in adhesive tape removal is reduced, and the adhesive tape removal quality is improved; the solid waste recovery treatment quality is further improved; on the other hand, in one-time positioning of the laminated piece, no matter the long edges or the short edges on the two sides are synchronously removed in sequence, the time for removing the adhesive tape on the edge of the laminated piece is greatly shortened, and no-residue adhesive tape removal on the edge of the laminated piece is completed through cooperation of stroke covering.

Description

Technical Field

[0001] This invention belongs to the field of solid waste recycling and treatment technology, specifically relating to a process for removing adhesive strips from laminated components used in the recycling of photovoltaic modules. Background Technology

[0002] A photovoltaic (PV) module is a power generation device that generates direct current when exposed to sunlight. It consists of thin, solid-state photovoltaic cells made almost entirely of semiconductor materials (such as silicon). More than 90% of these materials can be recycled and reused. As their lifespan is limited, retired PV modules generally require solid waste recycling. This not only alleviates the shortage of raw materials for PV equipment to some extent but also effectively reduces environmental pollution (i.e., recycling the solar cells from solid waste into useful raw materials, while also effectively carrying out environmental governance and protecting the environment).

[0003] Currently, in the component recycling process, the frame strips need to be removed first. The frame strips and laminates are fixed together with sealant. Therefore, after the frame strips are removed, sealant residue remains on the edges of the laminates. This means that the sealant residue needs to be removed during further disassembly and recycling of the laminates. Failure to remove the sealant residue directly impacts the difficulty and quality of subsequent cell decomposition and screening. However, the removal of the sealant residue is generally done by scraping; that is, after the laminates are fixed, a scraper removes the sealant residue. But in actual operation, the following drawbacks exist: 1) Due to the high deformation rate of waste components during recycling (e.g., caused by frame removal, on-site decommissioning and transportation), after the laminate is positioned, the edges are raised or sunken, and the entire laminate cannot be kept in a flat state for removing the adhesive strip. Therefore, it not only increases the difficulty of removing the adhesive, but also has a high rate of adhesive strip leakage, which directly affects the quality of battery cell recycling in solid waste. 2) Because laminates have long and short sides, the adhesive is usually removed from two long sides or two ends in sequence. The removal process can be in the same direction or opposite directions. However, since the surface of the laminate is a glass layer, if the whole piece of glass is to be recycled, it is not advisable to squeeze excessively during the positioning process (which will increase the breakage rate of the glass). Therefore, the removal often causes the laminate to shift, resulting in the removal area not being able to cover the adhesive strip, which further increases the adhesive strip removal rate. 3) Whether removing the adhesive strip from the long side or the short side, the removal stroke is from one end to the other. Moreover, the long and short side removal process requires secondary positioning, so the removal efficiency of the adhesive strip is low. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a novel process for removing adhesive strips from laminates used in the recycling of photovoltaic modules.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A process for removing adhesive strips from laminated components used in photovoltaic module recycling includes the following steps: S1, Feeding The laminated parts are conveyed by a ring conveyor belt and enter the adhesive strip removal station along the long side. After being conveyed to the set position, the ring conveyor belt stops moving. S2. Removal of long and short side adhesive strips First, taking one short side as a reference, the first working group is selected to form a wide-coverage roll forming at the reference end of the laminate. Then, the second working group, which is close to the first working group, forms a wide-coverage roll forming along the long side towards the other short side to roll flatten the laminate. The laminate is positioned between the two working groups and the annular conveyor belt. Secondly, in a mode that does not distinguish between the order of operations and does not require secondary positioning of the laminated parts, the adhesive strips on both long sides and both short sides are removed simultaneously. When removing the adhesive strips on the long sides, the two working groups are adjusted so that their adhesive removal tool working areas cover the edge segment or edge end of the corresponding long side. At the same time, the first and second working groups cut / brush the adhesive strips in the same direction along the long side, and the sum of the strokes of the two working groups in the long side direction is greater than or equal to the length of the long side. Under the pressure of the shifting rollers of the two working groups, the adhesive strips on both long sides are removed simultaneously. When removing the adhesive strips on the short sides, the two working groups are adjusted so that their adhesive removal tool working areas cover the edge segment or edge end of the corresponding end. At the same time, the adhesive removal tools of the first and second working groups move in the same direction or opposite directions along the short side, and the sum of the strokes in the short side direction is greater than or equal to the length of the short side, cutting / brushing the adhesive strips. Under the pressure of the positioning rollers of the two working groups, the adhesive strips on both short sides are removed simultaneously. S3, Discharge After the long and short sides of the adhesive strips are removed, the two work groups detach from the laminate and the laminate is moved out of the adhesive strip removal station by the movement of the circular conveyor belt.

[0006] Preferably, each working group has at least two flattening rollers. During the removal of the adhesive strip along the long side, the first working group gradually moves towards the reference short side, while the flattening roller of the second working group moves and presses against the laminate. After the adhesive strip is removed / brushed from the long side end, at least one flattening roller from the first working group approaches the reference short side to form a rolling pressure, and all flattening rollers from the second working group are pressed against the laminate. And / or, during the removal of the adhesive strip along the short side, at least one flattening roller in each working group presses against the inner side of the short side. In short, whether removing the adhesive strip along the long or short side, at least two flattening rollers are maintained to form a rolling pressure, thus ensuring that the adhesive strip removal is completed in a flat, edge-free condition. This not only reduces the residual adhesive rate at the edges but also reduces the probability of edge damage.

[0007] Preferably, each working group has two flattening rollers, with a gap between them. The adhesive removal tool is positioned within the gap and can be adjusted in the length, width, and thickness directions of the laminate. Based on the three-axis (X, Y, Z, corresponding to length, width, and thickness) movement of the adhesive removal tool, the adhesive strip can be removed in stages without secondary positioning on the long or short side.

[0008] According to a specific embodiment and preferred aspect of the invention, each working group has two adhesive removal tools. In the long-side adhesive strip removal, four adhesive removal tools are arranged in a quadrilateral shape, with the two tools located on the short side forming a group. The relative movement between the two groups synchronously completes the long-side adhesive strip removal / brushing. In the short-side adhesive strip removal, four adhesive removal tools are arranged in a quadrilateral shape, with the two tools located on the long side forming a group. The relative movement between the two groups synchronously completes the long-side and short-side adhesive strip removal. Using two groups of synchronously moving four adhesive removal tools not only divides the entire long side length but also, during the same-direction movement, achieves cooperative synchronous removal of the two long-side adhesive strips by applying a rolling press to avoid displacement of the laminate.

[0009] In some specific embodiments, in removing the adhesive strip along the long side, two tool groups are designated as a first group and a second group. The first group has its self-removing tool positioned at a first starting point, and the intersection of the long side and the reference short side as a first ending point, with a stroke S1 between the first starting point and the first ending point. The second group has the other short side as a second starting point, the first starting point as a second ending point, and a stroke S2 ​​between the second starting point and the second ending point. The length of the long side is L, where L = S1 + S2, and S2 > S1. By using the sum of the two strokes to cover the entire long side, the adhesive strip is removed without omission, and the time required for removal is shortened.

[0010] In some specific embodiments, in the removal of the adhesive strip on the short side, the two tool groups are designated as the third group and the fourth group, respectively, and they remove the adhesive strip on the short side by moving in the same direction. The third group uses one end of the short side as the third starting point and the middle of the short side as the third ending point, with a travel distance of S3 between the third starting point and the third ending point. The fourth group uses the third ending point as the fourth starting point and the other end of the short side as the fourth ending point, with a travel distance of S4 between the fourth starting point and the fourth ending point. The length of the short side is M, and M = S3 + S4, where S3 = S4. This method of removing the adhesive strip on the short side in the same direction ensures that no adhesive strip is missed during removal and shortens the time required for removal.

[0011] Alternatively, in some specific embodiments, in the removal of adhesive strips on the short side, the two tool groups are designated as the third and fourth groups, respectively. The adhesive strips on the short side are removed during a counter-movement. This counter-movement includes a first movement posture where the two tool groups move relatively closer together from both ends to the middle, and a second movement posture where they move forward and backward while maintaining equal distances. The length of the short side is M, the travel distance of the third group is S3, and the travel distance of the fourth group is S4. The length of the short side is M, and M < S3 + S4, S3 = S4. This counter-movement method ensures that no adhesive strips are missed during removal of the short side and shortens the removal time. It should be further noted that the counter-movement process must be divided into two movements. That is, when the two tool groups approach each other, a gap is formed in the middle section. Then, the gap is removed during a forward and backward movement, thus completing the removal of all adhesive strips without omission. Furthermore, the travel distance here is not displacement, but the distance the tool moves. That is, in a forward and backward process, the backward distance must also be calculated by adding positive numbers, and the sum of these must be greater than the length of the shorter side.

[0012] Furthermore, in the second motion posture, the third and fourth groups of the two short sides move simultaneously and in opposite directions to remove or brush away the short side adhesive strips. This opposite movement can further counteract the lateral stress generated in the short side direction, thereby maintaining a dynamic balance throughout the entire short side removal process and avoiding the probability of offset caused by the removal of the adhesive strips on the short sides.

[0013] According to a specific embodiment and preferred aspect of the present invention, the adhesive strip removal tool is a cutting tool or a disc brush, and the tool itself is capable of rotating around a vertical direction. Based on the three-axis motion of the adhesive strip removal tool, combined with the rotation of the tool itself, the adhesive strip can be removed more comprehensively.

[0014] Furthermore, in the adhesive strip removal station, end positioning is achieved based on the telescopic movement of the ring conveyor belt above, with the short side of the end positioning forming the contact point serving as a reference. The laminate is accurately positioned at the adhesive strip removal station by the obstruction at the end of the grid.

[0015] In some specific embodiments, the guard is fixed relative to the first working group. That is, when the guard is pressed down to form a blockage, the first working group can simultaneously form a roller pressing downwards, at which time the guard can be retracted.

[0016] Preferably, the barrier includes a telescopic rod that moves up and down, and a barrier plate installed at the bottom of the telescopic rod and extending along the length of its shorter side, wherein the barrier plate is positioned to block the movement of the telescopic rod by moving up and down.

[0017] In some specific embodiments, there are multiple sets of gates, which are spaced apart along the direction of the short side extension.

[0018] In short, when the grid is pressed down to form an obstruction, the first working group can simultaneously roll downwards to shorten the time required for leveling. As for whether the grid needs to be raised, it depends on whether the grid is in contact with the annular conveyor belt. Once the two are in contact, it can be retracted upwards to avoid obstructing movement. That is, the operation is selected according to actual needs.

[0019] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art: In the current process of removing edge adhesive strips from laminated components, the high deformation rate of discarded components during recycling (e.g., caused by frame removal, on-site decommissioning, and transportation) means that after the laminate is positioned, the edges may warp or become concave. This makes it impossible to maintain a flat state for adhesive strip removal, increasing the difficulty of removal and resulting in a high rate of missed adhesive strip removal, directly impacting the quality of recycled solar cells from solid waste. Furthermore, because laminated components have long and short sides, adhesive removal is typically performed sequentially along two long sides or two ends, and can be done in the same or opposite directions. However, since the surface layer of the laminate is glass, if... To achieve whole-piece glass recycling, excessive compression during positioning should be avoided (as it increases the glass breakage rate). Therefore, the removal process often results in lamination displacement, preventing the adhesive strip from being covered in the removal area and further increasing the adhesive strip removal rate. Furthermore, regardless of whether the adhesive strip is removed along the long or short side, the removal stroke is always from one end to the other, and secondary positioning is required during both long and short side removal processes. Therefore, the adhesive strip removal efficiency is low. This application addresses these shortcomings by providing a comprehensive design for the adhesive strip removal process of laminated components used in photovoltaic module recycling, cleverly solving the deficiencies and defects of existing technologies. After adopting this adhesive strip removal process, the laminate base... The laminate is conveyed by a circular conveyor belt and enters the adhesive strip removal station along its long side. After reaching the set position, the circular conveyor belt stops moving. Next, using one short side as a reference, the first working group forms a wide-coverage roller press at the reference end of the laminate. Then, the second working group, which is close to the first working group, forms a wide-coverage roller press along the long side to the other short side to flatten the laminate. The laminate is positioned between the two working groups and the circular conveyor belt. Then, in a mode where there is no priority and no secondary positioning of the laminate, the adhesive strips on both long sides and both short sides are removed simultaneously. When removing the adhesive strips on the long side, the two working groups are adjusted so that their adhesive removal tool working areas are aligned. The adhesive strips are covered on the corresponding long side edge segment or edge end. At the same time, the first and second working groups remove / brush the adhesive strips in the same direction along the long side, and the sum of the strokes of the two working groups in the long side direction is greater than or equal to the length of the long side. Under the pressure of the shifting rollers of the two working groups, the adhesive strips on both sides of the long side are removed synchronously. When removing the adhesive strips on the short side, the two working groups are adjusted so that their adhesive removal tool working area covers the corresponding edge segment or edge end. At the same time, the adhesive removal tools of the first and second working groups move relative to each other along the short side direction, and the sum of the strokes in the short side direction is greater than or equal to the length of the short side to remove / brush the adhesive strips. Under the pressure of the positioning rollers of the two working groups, the adhesive strips on both sides of the short side are removed synchronously.After the long and short sides of the adhesive strip are removed, the two working groups detach from the laminate and the laminate is moved out of the adhesive strip removal station by a circular conveyor belt. Therefore, this invention, on the one hand, relies on roller pressing and leveling to eliminate adhesive strip leakage or edge damage caused by laminate deformation. Simultaneously, regardless of whether the adhesive strip is removed along the long or short side, the process is carried out under roller pressure to reduce the laminate's offset rate during adhesive strip removal, thereby improving the quality of adhesive strip removal and thus improving the quality of solid waste recycling. On the other hand, in the single positioning of the laminate, the simultaneous removal of both long and short sides, regardless of their order, not only significantly reduces the time for removing adhesive strips from the laminate's edges but also achieves residue-free removal of adhesive strips from the laminate's edges through a collaborative stroke coverage process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the laminate adhesive strip removal device for photovoltaic module recycling according to the present invention; Figure 2 for Figure 1 Front view diagram; Figure 3 for Figure 2 A top-down view; Figure 4 for Figure 3 Schematic diagram of the AA section; Figure 5 for Figure 1 Schematic diagram of the working group structure; Figure 6 for Figure 5 Front view diagram; Figure 7 for Figure 6 A top-down view; Figure 8 for Figure 7 Schematic diagram of the BB section; The components are: 1. Conveying unit; 10. Circular conveyor belt; 2. Adhesive strip removal unit; 2a. First working group; 2b. Second working group; 20. Flattening roller; 21. Adhesive removal tool; 3. Guard; 30. Telescopic rod; 31. Guard plate; T. Rack; L. Traveling gear. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] like Figures 1 to 8As shown, the laminate adhesive strip removal process for photovoltaic module recycling involved in this embodiment uses a laminate adhesive strip removal device including a conveying unit 1 and an adhesive strip removal unit 2. The conveying unit 1 includes a horizontally arranged annular conveyor belt 10, and the adhesive strip removal unit 2 includes a first working group 2a and a second working group 2b. The adhesive strip removal of the edge of the laminate M is completed synchronously by the cooperation of the two working groups.

[0028] Specifically, the first working group 2a and the second working group 2b have the same structure, both including multiple flattening rollers 20 extending along the short side of the laminate M and spaced apart along the long side of the laminate M, and a glue removal tool 21 located between two adjacent flattening rollers 20. The glue removal tool 21 can be adjusted in the length, width, and thickness directions of the laminate. At the same time, the glue strip removal tool 21 is a cutting tool or a disc brush, and the glue strip removal tool 21 itself can rotate around the vertical direction. Based on the three-axis (X, Y, Z, corresponding to length, width, and thickness) movement of the glue removal tool 21, the glue strip can be removed in stages without secondary positioning on the long or short side. Based on the three-axis movement of the glue strip removal tool, combined with the rotation of the tool itself, the glue strip removal is carried out more comprehensively.

[0029] In this example, each working group has two flattening rollers 20, and a gap is formed between the two flattening rollers 20. The glue removal tool 21 is arranged in the gap, and each working group has two glue removal tools 21. The four glue removal tools 21 are distributed in a quadrilateral. At the same time, the glue removal tool 21 is a disc brush. The specific rotation direction of the disc brush can be the same or opposite, because the rotation direction of the disc brush under roller pressure will not cause the laminate M to shift. In addition, the three-axis motion of the glue removal tool 21 adopts the cooperation of rack T and travel gear L for linear motion. Of course, other conventional linear motion can also be adopted, such as telescopic rod, transmission screw, etc.

[0030] In some specific embodiments, in the removal of adhesive strips along the long side, two adhesive removal tools 21 located on the short side form a group, and the relative movement between the two groups synchronously completes the removal / brushing of adhesive strips along the long side; in the removal of adhesive strips along the short side, two adhesive removal tools 21 located on the long side form a group, and the relative movement between the two groups synchronously completes the removal / brushing of adhesive strips along both the long and short sides. Using four adhesive removal tools in two groups with synchronous movement not only divides the entire length of the long side, but also, during the same-direction movement, achieves cooperative synchronous removal of adhesive strips along the two long sides by applying a rolling press to avoid displacement of the laminate.

[0031] In this example, during the removal of the adhesive strip along the long side, two tool groups are used: Group 1 and Group 2. In Group 1, the self-removing tool is positioned at the first starting point, and the intersection of the long side and the reference short side is the first ending point. The travel distance between the first starting point and the first ending point is S1. In Group 2, the other short side is used as the second starting point, and the position of the first starting point is the second ending point. The travel distance between the second starting point and the second ending point is S2. The length of the long side is L, where L = S1 + S2, and S2 > S1. By using the sum of the two travel distances to cover the entire long side, the adhesive strip is removed without any omissions, and the time required for removal is shortened.

[0032] In the removal of adhesive strips on the short side, the two tool groups are designated as the third and fourth groups, and they remove the adhesive strips on the short side by moving in the same direction. There are two implementation methods: Method 1: The third group uses one end of the short side as the third starting point and the middle of the short side as the third ending point, with a travel distance of S3 between the third starting point and the third ending point; the fourth group uses the third ending point as the fourth starting point and the other end of the short side as the fourth ending point, with a travel distance of S4 between the fourth starting point and the fourth ending point. The length of the short side is M, where M = S3 + S4, and S3 = S4. Removal is performed in the same direction. Method 1: Short-side adhesive strip removal. This method ensures complete removal of the short side adhesive strip without omissions and shortens the removal time. Method 2: Two tool groups, designated as the third and fourth groups, remove the short side adhesive strip during opposing movements. The opposing movement includes a first movement posture where the two tool groups move towards each other from opposite ends towards the middle, followed by a second movement posture where they move forward and backward at equal intervals. The length of the short side is M, the travel distance of the third group is S3, and the travel distance of the fourth group is S4. The length of the short side is M, and M < S3 + S4, S3 = S4. This opposing short-side adhesive strip removal method ensures complete removal of the short side adhesive strip without omissions and shortens the removal time. It should be further noted that the opposing movement must be divided into two movements. That is, after the two tool groups approach each other, a gap is formed in the middle section. Then, the gap is removed during the forward and backward movements, thus completing the removal of the adhesive strip without omissions. Furthermore, the stroke here is not displacement, but the distance the tool moves. That is, in a forward and backward motion, the backward distance must also be calculated by adding positive numbers, and the sum of these must be greater than the length of the short side. Further, in the second motion posture, the third and fourth groups of the two short sides move simultaneously and in opposite directions to remove or brush away the short side adhesive strip. This opposite movement can further counteract the lateral stress generated in the short side direction, thus maintaining dynamic balance throughout the entire short side removal process and avoiding the probability of offset during short side adhesive strip removal.

[0033] In summary, the process for removing adhesive strips from laminated components used in the recycling of photovoltaic modules in this embodiment includes the following steps: S1, Feeding The laminated parts are conveyed by a ring conveyor belt and enter the adhesive strip removal station along the long side. After being conveyed to the set position, the ring conveyor belt stops moving. S2. Removal of long and short side adhesive strips First, taking one short side as a reference, the first working group is selected to form a wide-coverage roll forming at the reference end of the laminate. Then, the second working group, which is close to the first working group, forms a wide-coverage roll forming along the long side towards the other short side to roll flatten the laminate. The laminate is positioned between the two working groups and the annular conveyor belt. Secondly, in a mode that does not distinguish between the order of operations and does not require secondary positioning of the laminated parts, the adhesive strips on both long sides and both short sides are removed simultaneously. When removing the adhesive strips on the long sides, the two working groups are adjusted so that their adhesive removal tool working areas cover the edge segment or edge end of the corresponding long side. At the same time, the first and second working groups cut / brush the adhesive strips in the same direction along the long side, and the sum of the strokes of the two working groups in the long side direction is greater than or equal to the length of the long side. Under the pressure of the shifting rollers of the two working groups, the adhesive strips on both long sides are removed simultaneously. When removing the adhesive strips on the short sides, the two working groups are adjusted so that their adhesive removal tool working areas cover the edge segment or edge end of the corresponding end. At the same time, the adhesive removal tools of the first and second working groups move in the same direction or opposite directions along the short side, and the sum of the strokes in the short side direction is greater than or equal to the length of the short side, cutting / brushing the adhesive strips. Under the pressure of the positioning rollers of the two working groups, the adhesive strips on both short sides are removed simultaneously. S3, Discharge After the long and short sides of the adhesive strips are removed, the two work groups detach from the laminate and the laminate is moved out of the adhesive strip removal station by the movement of the circular conveyor belt.

[0034] In the adhesive strip removal station, the guide rail 3 forms end positioning based on the telescopic movement above the annular conveyor belt 10, wherein the short side of the end positioning forms the reference. Based on the end blocking of the guide rail 3, the laminate is accurately positioned in the adhesive strip removal station. The guide rail 3 is relatively fixed to the first working group 2a, that is, when the guide rail is pressed down to form a block, the first working group can simultaneously form a roller pressing downward, at which time the guide rail can be retracted. In this example, the guide rail 3 includes a telescopic rod 30 that moves up and down, and a guide rail plate 31 installed at the bottom of the telescopic rod 30 and extending along the short side length direction, wherein the up and down movement of the telescopic rod 30 forms the blocking positioning of the guide rail plate 31. At the same time, there are multiple sets of guide rail 3, which are spaced apart along the short side extension direction.

[0035] In summary, after adopting this laminate adhesive strip removal process, the laminate is first conveyed by a circular conveyor belt and enters the adhesive strip removal station along its long side. After reaching the set position, the circular conveyor belt stops moving. Next, using one short side as a reference, a first working group forms a wide-area covering roller press at the reference end of the laminate. Then, a second working group, closely attached to the first working group, forms a wide-area covering roller press along the long side towards the other short side to flatten the laminate. The laminate is positioned between the two working groups and the circular conveyor belt. Then, without further steps... In a sequential mode without requiring secondary positioning of the laminated parts, simultaneous removal of adhesive strips is performed on both long and short sides. When removing adhesive strips from the long sides, the two work groups are adjusted so that their adhesive removal tool working areas cover the corresponding edge segment or end of the long side. Simultaneously, the first and second work groups scrape / brush the adhesive strips in the same direction along the long side, and the sum of the strokes of the two work groups in the long side direction is greater than or equal to the length of the long side. This allows for simultaneous removal of adhesive strips from both long sides under the pressure of the shifting rollers of the two work groups. When removing adhesive strips from the short sides, the two work groups are adjusted... The working groups are configured such that their adhesive removal tools cover the corresponding edge segments or edges. Simultaneously, the adhesive removal tools of the first and second working groups move relative to each other along the short side direction, and the sum of their strokes along the short side direction is greater than or equal to the length of the short side, removing / brushing off the adhesive strips. This is achieved by the positioning rollers of the two working groups, synchronously removing the adhesive strips from both short sides. Finally, after removing the adhesive strips from both the long and short sides, the two working groups detach from the laminate, and the laminate is moved out of the adhesive strip removal station by a circular conveyor belt. Therefore, this invention, on the one hand, is based on roller pressing... This method eliminates the problem of insufficient adhesive strip removal or edge damage to laminates caused by lamination deformation. Furthermore, regardless of whether the adhesive strip is removed along the long or short side, the process is carried out under roller pressure to reduce the offset rate of the laminate during adhesive strip removal, thereby improving the quality of adhesive strip removal and ultimately enhancing the quality of solid waste recycling. On the other hand, during the single positioning of the laminate, simultaneous removal of both long and short sides, regardless of their order, not only significantly reduces the time required for removing adhesive strips from the laminate edges but also achieves residue-free adhesive strip removal from the laminate edges through a collaborative stroke coverage mechanism. Thirdly, regardless of whether the adhesive strip is removed along the long or short side, at least two flattening rollers are used to form a rolling pressure, ensuring the adhesive strip is removed smoothly without any warping. This not only reduces the rate of residual adhesive at the edges but also lowers the probability of edge damage. Fourthly, based on the three-axis (X, Y, Z, corresponding to length, width, and thickness) movement of the adhesive removal tool, combined with the tool's own rotation, the adhesive strip is removed in stages and more comprehensively without secondary positioning along the long or short side. Fifthly, two sets of four adhesive removal tools moving synchronously in sync not only divide the entire long side but also, during the same-direction movement, use the rolling pressure to avoid displacement of the laminated parts, completing the synchronous removal of adhesive strips along the two long sides in a cooperative manner. The sum of the two strokes covers the entire long side, ensuring no adhesive strips are missed, and reducing... The time required for removing short adhesive strips; simultaneously, adopting a method of removing short-side adhesive strips using unidirectional or opposite-directional movements to ensure that no short-side adhesive strips are missed and to shorten the time required for adhesive strip removal, especially since opposite-directional movements can further counteract the lateral stress generated in the direction of the short side, thereby maintaining a dynamic balance throughout the entire short-side removal process and avoiding the probability of displacement caused by removing short-side adhesive strips; sixthly, based on the blocking at the end of the grid, the laminate is accurately positioned at the adhesive strip removal station, and the grid is relatively fixed to the first working group, that is, when the grid is pressed down to form a block, the first working group can simultaneously form a roller pressing downwards to shorten the time required for leveling. As for whether the grid needs to be raised, it depends on whether the grid is attached to the annular conveyor belt. Once the two are attached, to avoid causing movement obstruction, it can be retracted upwards, that is, the operation can be selected according to actual needs.

[0036] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. A laminate tape removal process for photovoltaic module recycling, characterized by, It comprises the following steps: S1, feeding The laminates are conveyed by the annular conveying belt and enter the rubber strip removal station along the long edge direction, and the annular conveying belt stops moving after being conveyed to the set position; S2, long and short edge rubber strip removal First, with one short edge as the reference, the first working group forms a wide coverage roller pressing at the reference end of the laminates, and the second working group close to the first working group forms a wide coverage roller pressing along the long edge direction to the other short edge to roll flatten the laminates, and the laminates are positioned between the two working groups and the annular conveying belt; Second, the synchronous removal of the long edges and the synchronous removal of the short edges are carried out in no particular order and without the need for secondary positioning of the laminates, wherein when the long edges are removed, the two working groups are adjusted so that the rubber removal tool working area covers the edge section or edge end of the corresponding long edge, and the first and second working groups simultaneously remove / brush off the rubber strip along the long edge direction, and the sum of the travel of the two working groups in the long edge direction is greater than or equal to the length of the long edge, so that the synchronous removal of the rubber strip of the two long edges is completed simultaneously by the two working groups moving and rolling; when the short edges are removed, the two working groups are adjusted so that the rubber removal tool working area covers the edge section or edge end of the corresponding end edge, and the rubber removal tools of the first and second working groups move in the same direction or opposite directions along the short edge direction and remove / brush off the rubber strip with a travel sum in the short edge direction greater than or equal to the length of the short edge, so that the synchronous removal of the rubber strip of the two short edges is completed simultaneously by the two working groups positioning and rolling; S3, discharging After the long and short edge rubber strip removal is completed, the two working groups are separated from the laminates, and the laminates are moved out of the rubber strip removal station by the annular conveying belt.

2. The laminate tape removal process for photovoltaic module recycling according to claim 1, characterized in that, Each working group has at least two flattening rollers, and in the long edge rubber strip removal, the first working group gradually moves towards the reference short edge for rolling, the flattening rollers of the second working group roll on the laminates, and after the long edge end rubber strip removal is completed, at least one flattening roller of the first working group is close to the reference short edge for rolling, and the flattening rollers of the second working group all roll on the laminates; and / or in the short edge rubber strip removal, at least one flattening roller of each working group rolls on the inner side of the short edge.

3. The laminate tape removal process for photovoltaic module recycling according to claim 2, characterized in that, Each working group has two flattening rollers, and a spacing area is formed between the two flattening rollers, the rubber removal tool is arranged in the spacing area, and can move and adjust in the length, width and thickness directions of the laminates.

4. The laminate tape removal process for photovoltaic module recycling according to claim 3, characterized in that, Each working group has two rubber removal tools, and in the long edge rubber strip removal, the four rubber removal tools are distributed in a quadrilateral shape, wherein the two rubber removal tools on the short edge are a group, and the long edge removal is completed synchronously by the relative movement between the two groups; in the short edge rubber strip removal, the four rubber removal tools are distributed in a quadrilateral shape, wherein the two rubber removal tools on the long edge are a group, and the long and short edge removal is completed synchronously by the relative movement between the two groups.

5. The laminate tape removal process for photovoltaic module recycling according to claim 4, wherein In the long side removing adhesive strip, two tool groups are respectively first group and second group, wherein the first group takes the position of the adhesive removing tool as the first starting point, the intersection of the long side and the reference short side as the first ending point, and the stroke between the first starting point and the first ending point is S1; the second group takes the other short side end as the second starting point, the first starting point position as the second ending point, and the stroke between the second starting point and the second ending point is S2, the length of the long side is L, and L=S1+S2, S2>S1.

6. The laminate tape removal process for photovoltaic module recycling according to claim 4, wherein In the short side removing adhesive strip, two tool groups are respectively third group and fourth group, and the short side removing adhesive strip is performed in the same direction movement, wherein the third group takes the short side one end as the third starting point, and the short side middle part as the third ending point, and the stroke between the third starting point and the third ending point is S3; the fourth group takes the third ending point as the fourth starting point, and the other end of the short side as the fourth ending point, and the stroke between the fourth starting point and the fourth ending point is S4, the length of the short side is M, and M=S3+S4, S3=S4.

7. The laminate tape removal process for photovoltaic module recycling according to claim 4, wherein In the short side removing adhesive strip, two tool groups are respectively third group and fourth group, and the short side removing adhesive strip is performed in the opposite direction movement, wherein the opposite movement includes the first movement posture of relatively approaching from both ends to the middle part, and the second movement posture of keeping the same interval of one advancing and one retreating, and the length of the short side is M, the moving stroke of the third group is S3, the moving stroke of the fourth group is S4, the length of the short side is M, and M<S3+S4, S3=S4.

8. The laminate tape removal process for photovoltaic module recycling according to claim 7, characterized in that, In the second movement posture, the third group and the fourth group of the two short sides are simultaneously and oppositely moved to remove or brush off the short side adhesive strip.

9. The laminate tape removal process for photovoltaic module recycling according to claim 1, wherein, The adhesive strip removing tool is a cutting tool or a disc brush, and the adhesive strip removing tool itself can rotate around the vertical direction.

10. The laminate tape removal process for photovoltaic module recycling according to claim 1, wherein, In the adhesive strip removing station, the end positioning is formed by the expansion and contraction movement of the fence above the annular conveying belt, and the short side in contact with the end positioning is the reference.

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