EVA-POE Solar Photovoltaic Film Extrusion Production Line

Abstract

The present invention discloses an EVA-POE solar photovoltaic film extrusion production line, which relates to the technical field of automated production lines. The present invention includes a screw extruder for extruding raw materials into a viscous flow state, a cooling and shaping device for shaping the formed film, a tractor for pulling the formed film, and a winding device for winding the formed film. The discharge end of the screw extruder is connected to a die for extruding the viscous flow state raw materials into a sheet shape; the cooling and shaping device includes a cooling roll mechanism and a tempering roll line body; a moving component is arranged below the cooling roll mechanism to move the cooling roll mechanism out from below the die. By setting the screw extruder, the cooling and shaping device, the tractor and the winding device, the discharge end of the screw extruder is connected to the die, the cooling roll mechanism is arranged below the die to receive the formed film flowing out of the discharge port of the die, and the formed film is automatically wound, realizing full-line automated production.

Description

Technical Field

[0001] The present invention belongs to the technical field of automated production lines, and particularly relates to an EVA-POE solar photovoltaic film extrusion production line. Background Art

[0002] EVA-POE solar cell film is the mainstream photovoltaic encapsulation material for solar cells. After being laminated and cured, it adhesively seals, playing roles such as high light transmittance, preventing water vapor penetration, resistance to high and low temperatures, and ultraviolet light resistance for the battery module, ensuring the stable and efficient use of the battery module. EVA-POE solar cell film has good flexibility, stress crack resistance, and adhesiveness, and is a durable and reliable encapsulation material.

[0003] Most of the EVA-POE film forming adopts an extrusion molding process. The whole production line usually includes extrusion equipment, a film pressing die, cooling equipment, a trimming unit, and winding and unwinding equipment, completing processes such as mixing, feeding, extrusion, cooling and forming, calendering, trimming, and winding. During the production process of the battery film, the rubber particles are melted into a molten colloid in the heating pipeline of the extrusion equipment, and the colloid will adhere to the die, affecting the subsequent film forming quality. Therefore, it is necessary to regularly clean the residual colloid in the die. However, the distance between the outlet of the die and the cooling equipment is relatively close. When cleaning the inside of the die, the operator needs to climb onto the cooling equipment, disassemble the die or insert a cleaning tool into the die opening for cleaning, which is inconvenient to operate and has relatively large potential safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to provide an EVA-POE solar photovoltaic film extrusion production line. By setting a cooling and shaping device, the cooling and shaping device includes a cooling roll mechanism and a tempering roll line body. The cooling roll mechanism is arranged below the die to receive the formed film sheet flowing out of the die outlet. The cooling roll mechanism includes a cooling roll frame and a plurality of cooling rolls installed on the cooling roll frame. A moving component is arranged below the cooling roll frame to move the cooling roll mechanism out from below the die, thereby facilitating the cleaning of the residual colloid in the die, and solving the problems in the prior art that the operator needs to climb onto the cooling equipment, disassemble the die or insert a cleaning tool into the die opening for cleaning, which is inconvenient to operate and has relatively large potential safety hazards.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention relates to an EVA-POE solar photovoltaic film extrusion production line, which includes a screw extruder for extruding raw materials into a viscous flow state, a cooling and shaping device for shaping the formed film, a tractor for pulling the formed film, and a winding device for winding the formed film. The discharge end of the screw extruder is connected to a die for extruding the viscous flow state raw materials into a sheet shape. The cooling and shaping device includes a cooling roll mechanism and a tempering roll line body; the cooling roll mechanism is arranged below the die to receive the formed film flowing out of the die outlet. The cooling roll mechanism includes a cooling roll frame and a number of cooling rolls installed on the cooling roll frame. A moving component is arranged below the cooling roll frame to move the cooling roll mechanism out from below the die; the tempering roll line body is arranged behind the cooling roll mechanism. The tractor is arranged behind the tempering roll line body. The winding device is arranged behind the tractor.

[0007] As a preferred technical solution of the present invention, the cooling roll mechanism includes five cooling rolls, and cooling water flows through the cooling rolls.

[0008] As a preferred technical solution of the present invention, a first roller is installed below the cooling roll frame, and the first roller is in rolling cooperation with a first guide rail, and the first guide rail is laid along the length direction of the production line; one end of the tempering roll line body close to the cooling roll mechanism adopts a telescopic structure to provide a space for the movement of the cooling roll mechanism.

[0009] As a preferred technical solution of the present invention, the tempering roll line body includes a line body A section and a line body B section. The line body A section includes two side support plates and a number of tempering rolls installed on the two side support plates. The line body B section includes two side brackets and a number of tempering rolls installed on the two side brackets; symmetric sliding grooves are formed on the two side support plates, and one end of the two side brackets close to the line body A section is slidably connected to the sliding grooves, so that one end of the line body B section close to the line body A section can extend into the line body A section to realize the telescoping of the tempering roll line body.

[0010] As a preferred technical solution of the present invention, second rollers are installed below the two side support plates, and the second rollers are in rolling cooperation with a second guide rail, and the laying direction of the second guide rail is the same as that of the first guide rail, so that the line body A section can move away from the cooling roll mechanism to provide a space for the movement of the cooling roll mechanism. One end of the two side brackets is rotatably connected to both sides of the tractor, and the other end of the two side brackets is rotatably connected to a guide wheel. The sliding groove adopts a "~" shaped structure, and when the line body A section moves along the second guide rail, the guide wheel is in rolling cooperation with the sliding groove.

[0011] As a preferred technical solution of the present invention, a thickness gauge for detecting the thickness of the formed film is arranged between the cooling roll mechanism and the tempering roll line body, and the thickness gauge is fixedly installed on the two side support plates to move along with the line body A section.

[0012] As a preferred technical solution of the present invention, an infrared heater for heat preservation of the diaphragm is installed between the discharge port of the mold and the cooling roller mechanism.

[0013] As a preferred technical solution of the present invention, a trimming assembly for trimming the formed diaphragm is installed on the tractor. The trimming assembly is arranged on both sides of the tractor and includes a trimming cutter and a waste edge winding roller.

[0014] As a preferred technical solution of the present invention, a slitting cutter for axially slitting the formed sheet is also installed on the tractor. The trimming cutter and the slitting cutter are installed on the same fixed rod.

[0015] As a preferred technical solution of the present invention, the winding device includes a first winding machine and a second winding machine for winding the slit sheets respectively.

[0016] The present invention has the following beneficial effects:

[0017] 1. By setting a cooling and shaping device, which includes a cooling roller mechanism and a tempering roller line body, the cooling roller mechanism is arranged below the mold to receive the formed diaphragm flowing out of the discharge port of the mold. The cooling roller mechanism includes a cooling roller frame and a plurality of cooling rollers installed on the cooling roller frame. A moving component is arranged below the cooling roller frame to move the cooling roller mechanism out from below the mold. One end of the tempering roller line body close to the cooling roller mechanism adopts a telescopic structure to provide a space for the movement of the cooling roller mechanism. After the cooling roller mechanism is moved away, the operator can step into the mold, which is convenient for cleaning the residual colloid in the mold; at the same time, it avoids personnel climbing on the equipment and eliminates this safety hazard.

[0018] 2. By setting a screw extruder for extruding the raw material into a viscous flow state, a cooling and shaping device for shaping the formed diaphragm, a tractor for pulling the formed diaphragm, and a winding device for winding the formed diaphragm, the discharge end of the screw extruder is connected with a mold for extruding the viscous flow state raw material into a sheet shape. The cooling roller mechanism is arranged below the mold to receive the formed diaphragm flowing out of the discharge port of the mold. The formed diaphragm is automatically wound, realizing full-line automated production, reducing the use of labor, having high operation stability, and saving processing costs.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the EVA-POE solar photovoltaic film extrusion production line in Embodiment 1;

[0022] Figure 2 It is a side view of the EVA-POE solar photovoltaic film extrusion production line in Embodiment 1;

[0023] Figure 3 It is a schematic structural diagram of the cooling and shaping device in the production line;

[0024] Figure 4 It is Figure 3 a partial enlarged schematic view of part A in

[0025] Figure 5 It is Figure 2 a partial enlarged schematic view of part B in

[0026] Figure 6 It is a schematic structural diagram of the EVA-POE solar photovoltaic film extrusion production line in Embodiment 2;

[0027] Figure 7 It is a schematic structural diagram of the tractor;

[0028] Figure 8 It is a side view of the EVA-POE solar photovoltaic film extrusion production line in Embodiment 2;

[0029] In the drawings, the list of components represented by each label is as follows:

[0030] 1 - Screw extruder, 2 - Die, 3 - Cooling roll mechanism, 301 - Cooling roll frame, 302 - Cooling roll, 303 - First roller, 304 - First guide rail, 4 - Tempering roll line body, 4A - Line body A section, 4B - Line body B section, 401 - Side support plate, 4011 - Chute, 402 - Side support, 4021 - Guide wheel, 403 - Tempering roll, 404 - Second roller, 405 - Second guide rail, 5 - Tractor, 6 - Rewinding device, 601 - First rewinder, 602 - Second rewinder, 7 - Thickness gauge, 8 - Infrared heater, 9 - Trimming cutter, 10 - Slitting cutter, 11 - Scrap edge rewinding roll. Specific embodiments

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0033] Embodiment 1

[0034] Please refer to Figures 1 - 2 As shown in the figure, this embodiment provides an EVA-POE solar photovoltaic film extrusion production line, which is mainly used for the automated production of EVA solar photovoltaic films or POE solar photovoltaic films. Along the product processing direction, the production line sequentially includes a screw extruder 1 for extruding raw materials into a viscous flow state, a cooling and shaping device for shaping the formed film, a tractor 5 for pulling the formed film, and a winding device 6 for winding the formed film. The tractor 5 is arranged behind the cooling and shaping device, and the winding device 6 is arranged behind the tractor 5.

[0035] The discharge end of the screw extruder 1 is connected with a die 2 for extruding the viscous flow state raw materials into a sheet shape. During operation, the screw extruder 1 performs screw plasticization on the EVA / POE raw materials, passes through the filtration of the screen changer, the pressure stabilization of the metering pump, and the distribution of the distributor, and then enters the die 2 to be pressed into a sheet shape. After the formed film flows out from the discharge port of the die, it flows towards the cooling and shaping device.

[0036] Please refer to Figure 1 and Figure 3As shown in the figure, the cooling and shaping device includes a cooling roll mechanism 3 and a tempering roll line 4. The cooling roll mechanism 3 is arranged below the mold 2 to receive the formed diaphragm flowing out of the discharge port of the mold 2. The cooling roll mechanism 3 includes a cooling roll frame 301 and five cooling rolls 302 installed on the cooling roll frame 301. Cooling water flows through the cooling rolls 302. The diaphragm is wound around the circumferences of the cooling rolls 302 in sequence and is transferred backward to ensure full contact between the cooling rolls 302 and the diaphragm. Among them, it is preferably that the diameters of the first three cooling rolls 302 are larger than those of the last two cooling rolls. This design is because the temperature of the diaphragm just flowing out of the mold 2 is relatively high, and the larger cooling rolls 302 have a larger contact area with the diaphragm, which improves the heat exchange efficiency, that is, improves the cooling efficiency of the diaphragm. When reaching the last two cooling rolls 302, at this time the temperature of the diaphragm has dropped significantly, and the cooling rolls 302 with small diameters can already meet the cooling requirements, and at the same time, the cooling water flow can be saved to achieve energy conservation and consumption reduction.

[0037] Please refer to Figure 3 and Figure 4 As shown in the figure, a first roller 303 is installed below the cooling roll frame 301. The first roller 303 is in rolling fit with a first guide rail 304, and the first guide rail 304 is laid along the length direction of the production line. This structure facilitates moving the cooling roll mechanism 3 out from below the mold 2, facilitating the operator to step into the mold 2 to clean the residual colloid in the mold 2, ensuring product quality, and at the same time improving the convenience and safety of cleaning and maintenance.

[0038] The tempering roll line 4 is arranged behind the cooling roll mechanism 3. One end of the tempering roll line 4 close to the cooling roll mechanism 3 adopts a telescopic structure for providing a space for the movement of the cooling roll mechanism 3. The tempering roll line 4 includes a line body A section 4A and a line body B section 4B. The line body A section 4A includes two side plates 401 and multiple tempering rolls 403 installed on the two side plates 401. The line body B section 4B includes two side brackets 402 and multiple tempering rolls 403 installed on the two side brackets 402. Symmetrically arranged chutes 4011 are formed on the two side plates 401, and the chutes 4011 adopt a "~" shaped structure. One end of the two side brackets 402 is rotationally connected to both sides of the tractor 5 through bolts, and the other end of the two side brackets 402 is rotationally connected with a guide wheel 4021. A second roller 404 is installed below the two side plates 401. The second roller 404 is in rolling fit with a second guide rail 405, and the laying direction of the second guide rail 405 is the same as that of the first guide rail 304. When the line body A section 4A moves along the second guide rail 405 in a direction away from the cooling roll mechanism 3, the guide wheel 4021 rolls along the chute 4011, so that one end of the line body B section 4B close to the line body A section 4A can extend into the line body A section 4A to realize the telescoping of the tempering roll line 4, thereby providing a space for the movement of the cooling roll mechanism 3.

[0039] In addition, a thickness gauge 7 is provided between the cooling roller mechanism 3 and the tempering roller line 4. The thickness gauge 7 is fixedly installed on the two side support plates 401 to move along the length direction of the production line with the A section 4A of the line body, providing clearance for the movement of the cooling roller mechanism 3. At the same time, the thickness gauge is installed on a horizontal linear module and can move back and forth along the width direction of the production line, that is, back and forth along the width direction of the diaphragm, for detecting whether the thickness of the formed diaphragm is qualified.

[0040] As a preferred solution, as Figure 5 shown, an infrared heater 8 is installed between the discharge port of the mold 2 and the cooling roller mechanism 3, which is used to keep the diaphragm warm and prevent the diaphragm flowing out of the mold 2 from being cooled, affecting the forming effect.

[0041] A trimming assembly for trimming the formed diaphragm is installed on the tractor 5. The trimming assembly includes a trimming cutter 9 and a waste edge winding roller 11. The trimming cutter 9 and the waste edge winding roller 11 are arranged on both sides of the tractor 5 to trim the edge of the diaphragm neatly for easy winding.

[0042] During operation, the screw extruder 1 performs screw plasticization on the EVA / POE raw materials. After being filtered by the screen changer, stabilized by the metering pump, and distributed by the distributor, it enters the mold 2 to be pressed into a sheet shape. The formed diaphragm flows out of the discharge port of the mold 2 and then flows to the cooling roller mechanism 3 and the tempering roller line 4. After being cooled and formed by the cooling roller mechanism 3 and the tempering roller line 4, the tractor 5 pulls the diaphragm backward. At the same time, the trimming cutter 9 trims the edge of the diaphragm evenly, and the waste edge is wound and reused by the waste edge winding roller 11, while the finished diaphragm is wound into a cylinder by the winding device 6. The entire production line has a high degree of automation, achieving multiple effects of energy conservation, consumption reduction, labor saving, and efficiency improvement.

[0043] Embodiment 2

[0044] Based on Embodiment 1, the difference in Embodiment 2 is that:

[0045] Please refer to Figures 6 - 8 shown, a slitting cutter 10 for axially slitting the formed sheet into two parts is also installed on the tractor 5. The trimming cutter 9 and the slitting cutter 10 are installed on the same fixed rod through screws. The fixed rod is provided with a plurality of fixing holes along its length direction. According to production requirements, the position of the slitting cutter 10 or the trimming cutter 9 can be adjusted to adjust the width of the two rolls of diaphragms. At the same time, a first winding machine 601 and a second winding machine 602 are provided to wind the slit diaphragms respectively, and the second winding machine 602 is supported by a bracket between it and the tractor. A roller shaft is installed on the bracket to support the diaphragm wound by the second winding machine 602 to avoid interference with the position of the first winding machine 601.

[0046] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. EVA-POE solar photovoltaic adhesive film extrusion production line, characterized in that, Including: A screw extruder (1) for extruding raw materials into a viscous flow state, and a die (2) for extruding the viscous flow state raw materials into a sheet shape is connected to the discharge end of the screw extruder (1); A cooling and shaping device for shaping the formed film, the cooling and shaping device includes a cooling roll mechanism (3) and a tempering roll line body (4); the cooling roll mechanism (3) is arranged below the die (2) to receive the formed film flowing out of the discharge port of the die (2), the cooling roll mechanism (3) includes a cooling roll frame (301) and a plurality of cooling rolls (302) installed on the cooling roll frame (301), and a moving component is arranged below the cooling roll frame (301) to move the cooling roll mechanism (3) out from below the die (2); the tempering roll line body (4) is arranged behind the cooling roll mechanism (3); A tractor (5) for pulling the formed film, the tractor (5) is arranged behind the tempering roll line body (4); A winding device (6) for winding the formed film, the winding device (6) is arranged behind the tractor (5); A first roller (303) is installed below the cooling roll frame (301), and the first roller (303) is in rolling cooperation with a first guide rail (304); The tempering roll line body (4) includes a line body A section (4A) and a line body B section (4B), the line body A section (4A) includes two side support plates (401) and a plurality of tempering rolls (403) installed on the two side support plates (401), the line body B section (4B) includes two side brackets (402) and a plurality of tempering rolls (403) installed on the two side brackets (402); two symmetrically arranged chutes (4011) are formed on the two side support plates (401), and one end of the two side brackets (402) close to the line body A section (4A) is slidably connected to the chutes (4011), so that one end of the line body B section (4B) close to the line body A section (4A) can extend into the line body A section (4A) to realize the telescoping of the tempering roll line body (4); Second rollers (404) are installed below the two side support plates (401), the second rollers (404) are in rolling cooperation with a second guide rail (405), and the laying direction of the second guide rail (405) is the same as that of the first guide rail (304), so that the line body A section (4A) can move away from the cooling roll mechanism (3) to provide a space for the movement of the cooling roll mechanism (3); One end of the two side brackets (402) is rotatably connected to both sides of the tractor (5), and a guide wheel (4021) is rotatably connected to the other end of the two side brackets (402), and the chute (4011) adopts a "~” shaped structure, and when the line body A section (4A) moves along the second guide rail (405), the guide wheel (4021) is in rolling cooperation with the chute (4011).

2. The EVA-POE solar photovoltaic film extrusion production line according to claim 1, wherein, The cooling roll mechanism (3) includes five cooling rolls (302), and cooling water is passed through the cooling rolls (302).

3. The EVA-POE solar photovoltaic film extrusion production line according to claim 1, characterized in that, The first guide rail (304) is laid along the length direction of the production line; one end of the tempering roller line body (4) close to the cooling roller mechanism (3) adopts a telescopic structure, which is used to provide a space for the movement of the cooling roller mechanism (3).

4. The EVA-POE solar photovoltaic adhesive film extrusion production line according to claim 1, characterized in that, A thickness gauge (7) for detecting the thickness of the formed diaphragm is arranged between the cooling roller mechanism (3) and the tempering roller line body (4), and the thickness gauge (7) is fixedly installed on the two side support plates (401) to move along with the A section (4A) of the line body.

5. The EVA-POE solar photovoltaic film extrusion production line according to claim 1, wherein An infrared heater (8) for heat preservation of the diaphragm is installed between the discharge port of the mold (2) and the cooling roller mechanism (3).

6. The EVA-POE solar photovoltaic adhesive film extrusion production line according to claim 1, characterized in that, A trimming assembly for trimming the formed diaphragm is installed on the tractor (5), the trimming assembly is arranged on both sides of the tractor (5), and the trimming assembly includes a trimming cutter (9) and a waste edge winding roller (11).

7. The EVA-POE solar photovoltaic film extrusion production line according to claim 6, wherein, A slitting cutter (10) for axially slitting the formed sheet is also installed on the tractor (5), and the trimming cutter (9) and the slitting cutter (10) are installed on the same fixed rod.

8. The EVA-POE solar photovoltaic adhesive film extrusion production line according to claim 7, wherein The winding device (6) includes a first winder (601) and a second winder (602) for winding the slit sheets respectively.

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