Deviation rectifying device for EVA adhesive film rolling

Abstract

The utility model discloses a deviation rectifying device for winding an EVA (Ethylene Vinyl Acetate) adhesive film, which comprises a base, a conveying table is arranged on one side of the upper end surface of the base, a positioning box is arranged on the upper end surface of the base and positioned on one side of the conveying table, and a winding mechanism for rectifying deviation and winding the adhesive film is arranged on the positioning box. A detection assembly is arranged on the conveying table and used for judging the deviation condition of the adhesive film, and a controller is further arranged on the upper end face of the base. The device is simple in structure and reasonable in design, the position of the winding roller is dynamically and horizontally adjusted at the terminal winding position of the adhesive film, it is ensured that the adhesive film can be centered, aligned and wound by the winding roller, the whole adjusting process penetrates through the whole winding process of the adhesive film, the appearance quality of the adhesive film is remarkably improved, edge abrasion is avoided, the follow-up machining difficulty is reduced, and the production efficiency is improved. And meanwhile, real-time monitoring on the deviation condition of the winding position of the adhesive film is achieved, the end of the distance sensor is close to the edge of the adhesive film, and detection data feedback is accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of film winding equipment, specifically to a deviation rectifying device for EVA adhesive film winding. BACKGROUND

[0002] EVA adhesive film is a key material widely used in photovoltaic module packaging, which has excellent light transmission, bonding performance and weather resistance, and can effectively protect solar cell pieces and improve the service life of modules. In the production process of EVA adhesive film, winding is the last key process, which directly affects the storage, transportation and subsequent processing quality of the adhesive film.

[0003] Disadvantages of prior art:

[0004] At present, EVA adhesive film is usually conveyed to the winding roller for winding after processing by the conveying device. The prior art mainly focuses on the deviation rectification of the adhesive film during conveying, such as adjusting the position of the adhesive film by using photoelectric sensors or pneumatic deviation rectifying devices, but lacks precise deviation rectification control in the terminal winding link. Because there is a certain gap between the two sides of the adhesive film and the inner wall of the conveying device, the adhesive film is easy to deviate from the center position when conveying to the winding roller, and the winding roller and the conveying device are usually fixed in the center alignment, which causes the adhesive film to finally form a single-sided or double-sided offset roll on the winding roller after winding. This offset not only affects the appearance quality, but also may cause the adhesive film edge to wear or be unevenly tight, increasing the difficulty of subsequent slitting and use. Utility model content

[0005] The utility model aims at providing a deviation rectifying device for EVA adhesive film winding to solve the problems raised in the above background.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a deviation rectifying device for EVA adhesive film winding, comprising a base, one side of the upper end face of the base is provided with a conveying table, the upper end face of the base is provided with a positioning box on one side of the conveying table, the positioning box is provided with a winding mechanism for rectifying the winding adhesive film, the conveying table is provided with a detection assembly for judging the deviation of the adhesive film, and the upper end face of the base is further provided with a controller.

[0007] The winding mechanism comprises:

[0008] A mounting bracket is movably arranged on the upper end of the positioning box, a winding roller is arranged on the mounting bracket, and a power part for driving the winding roller is arranged on one side of the mounting bracket.

[0009] A lead screw is horizontally arranged in the positioning box, and a connecting piece at the lower end of the mounting bracket is threadedly connected with a nut on the lead screw.

[0010] A motor is arranged at one end of the positioning box, and an output end of the motor is connected with one end of the lead screw.

[0011] Preferably, the detection assembly comprises:

[0012] A slot is symmetrically arranged on the two vertical plates adjacent to the mounting frame, and a distance sensor is slidably connected in the slot to monitor the offset of the film.

[0013] An electromagnet is arranged on the inner side of the slot, and the end of the distance sensor is provided with a permanent magnet matched with the electromagnet.

[0014] Preferably, the sliding stroke of the distance sensor in the slot is 2-4 cm.

[0015] Preferably, the height of the detection end of the distance sensor is flush with the upper end of the conveying roller on the conveying table.

[0016] Preferably, a reducer is arranged between the output end of the motor and the lead screw.

[0017] Preferably, slide strips are arranged on the two sides of the lower end surface of the mounting frame, and slide grooves matched with the slide strips are arranged on the two sides of the upper end surface of the positioning box.

[0018] Preferably, the controller is electrically connected with the motor, the distance sensor and the electromagnet through wires.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1. The EVA film winding deviation correcting device, by setting the winding mechanism, the winding mechanism comprises a mounting frame, a winding roller, a power part, a lead screw, a connecting piece and a motor, realizes the dynamic horizontal adjustment of the position of the winding roller at the terminal winding of the film, ensures that the film can be centered and aligned by the winding roller, the whole adjusting process runs through the whole film winding process, significantly improves the appearance quality of the film, avoids edge wear, and reduces the subsequent processing difficulty.

[0021] 2. The EVA film winding deviation correcting device, by setting the detection assembly, the detection assembly comprises a slot, a distance sensor, an electromagnet and a permanent magnet, realizes real-time monitoring of the offset of the film winding position, and the end of the distance sensor is close to the edge of the film, the detection data feedback is accurate, in addition, if the film offset is large, the distance sensor can be recycled in real time, avoiding collision to cause damage to the sensor and the film, and increasing the detectable range. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall front view of the present application;

[0023] Figure 2 It is the internal structure main view schematic drawing of the utility model;

[0024] Figure 3 It is the internal structure side view schematic drawing of the winding mechanism of the utility model;

[0025] Figure 4 It is the internal structure plan view schematic drawing of the detection assembly of the utility model;

[0026] Figure 5 It is the Figure 4 The enlarged schematic view at A.

[0027] In the figure: 1, base; 2, conveying table; 3, positioning box; 4, winding mechanism; 401, mounting frame; 4011, slide bar; 4012, sliding groove; 402, winding roller; 403, power part; 404, lead screw; 405, connecting piece; 406, motor; 407, speed reducer; 5, detection assembly; 501, embedded groove; 502, distance sensor; 503, electromagnet; 504, permanent magnet; 6, controller. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] In the description of the patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the patent can be understood according to the specific circumstances.

[0031] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more than two, unless otherwise explicitly and specifically limited. Embodiments

[0032] Please refer to Figures 1-5 As shown in the utility model provides a kind of EVA adhesive film winding deviation correction device technical scheme: a kind of EVA adhesive film winding deviation correction device, including base 1, the upper end surface of base 1 one side is equipped with conveying table 2, the upper end surface of base 1 is equipped with positioning box 3 on the side of conveying table 2, positioning box 3 is equipped with winding mechanism 4 for deviation correction winding adhesive film, conveying table 2 is equipped with detection component 5 for judging the deviation of adhesive film, the upper end surface of base 1 is also fixedly installed with controller 6.Winding mechanism 4 includes mounting bracket 401, lead screw 404 and motor 406.Mounting bracket 401 is movably installed at the upper end of positioning box 3, and mounting bracket 401 can move horizontally at the upper end of positioning box 3, and winding roller 402 for winding adhesive film is installed on mounting bracket 401, and power part 403 for driving winding roller 402 is installed on one side of mounting bracket 401, and the output end of power part 403 is connected with the roller shaft of winding roller 402.Lead screw 404 is rotatably installed in positioning box 3, and the lower end of mounting bracket 401 is installed with connecting piece 405, which is threadedly connected with the nut on lead screw 404, so that mounting bracket 401 and winding roller 402 can be moved horizontally to adjust when lead screw 404 rotates.Motor 406 is fixedly installed at one end in positioning box 3, and the output end of motor 406 is connected with one end of lead screw 404 for driving lead screw 404 to rotate.

[0033] In the EVA adhesive film winding process, power part 403 drives winding roller 402 to rotate, and the adhesive film is wound on winding roller 402 by conveying table 2.If the winding end of the adhesive film is located at the middle of the end of conveying table 2, then mounting bracket 401 is also in the initial state of the middle of positioning box 3, and the adhesive film is directly wound on winding roller 402.If the detection component 5 detects that the winding part of the adhesive film deviates to one side of conveying table 2 during conveying, then the controller 6 receives the signal, controls the motor 406 to drive the lead screw 404 to rotate in the specified direction and for the specified number of turns, so as to drive the winding roller 402 to move horizontally by the specified distance, so that the winding part of the adhesive film is aligned with the winding roller 402, and the adhesive film can still be wound on the winding roller 402.In the adhesive film winding process, the adhesive film may deviate to both sides of the end of conveying table 2 at any time, so the above adjustment process is dynamic and accompanies the entire winding process.

[0034] Through the winding mechanism 4, the position of the winding roller 402 at the terminal winding of the adhesive film is dynamically adjusted horizontally, ensuring that the adhesive film can be aligned and wound by the winding roller 402. The entire adjustment process is throughout the winding process of the adhesive film, significantly improving the appearance quality of the adhesive film, avoiding edge wear, and reducing the difficulty of subsequent processing.

[0035] The detection assembly 5 includes a slot 501 and an electromagnet 503. The slot 501 is symmetrically opened on the two side vertical plates adjacent to the mounting frame 401 of the conveying table 2, and a distance sensor 502 is slidingly connected in the slot 501 for monitoring the offset of the adhesive film. The electromagnet 503 is fixedly installed on the inner side wall of the slot 501, and the end of the distance sensor 502 is provided with a permanent magnet 504 matched with the electromagnet 503, and the permanent magnet 504 is slidingly connected with the inner wall of the slot 501.

[0036] When the adhesive film is being conveyed, the electromagnet 503 is energized to generate a repulsive force on the permanent magnet 504, pushing the distance sensor 502 to the outermost side of the slot 501 close to the edge of the adhesive film. The two distance sensors 502 monitor the distance between the edge of the adhesive film at the end of the conveying table 2 and the inner wall of the conveying table 2 in real time, and feed the data back to the controller 6. When the two distance sensors 502 detect that the distance between the two edges of the adhesive film and the two edges of the conveying table 2 is equal, it means that the part of the adhesive film being wound is located at the center of the conveying table 2, and the winding roller 402 does not need to be adjusted. When the two distance sensors 502 detect that the distance on one side of the adhesive film is reduced and the distance on the other side is increased, the controller 6 will control the motor 406 to start driving the lead screw 404 to rotate in a specified direction by a specified number of turns, driving the winding roller 402 to move horizontally by a specified distance towards the sensor side with the reduced distance feedback value, ensuring that the adhesive film is still wound centrally on the winding roller 402. If the offset of the adhesive film is large enough to reach the critical value of one side distance sensor 502, the controller 6 controls the electromagnet 503 on that side to change the current direction to generate an attractive force on the permanent magnet 504, recovering the distance sensor 502 into the slot 501. The sliding travel of the distance sensor 502 in the slot 501 is a controllable fixed value of 2-4 cm. At this time, the recovered distance sensor 502 is corrected according to the sliding travel under the action of the controller 6 to continue the distance detection.

[0037] Through the detection assembly 5, the real-time monitoring of the winding position offset of the adhesive film is realized, and the end of the distance sensor 502 is close to the edge of the adhesive film, the detection data feedback is accurate, in addition, if the offset of the adhesive film is large, the distance sensor 502 can be recovered in real time to avoid damage to the sensor and the adhesive film caused by collision, and the detectable range is also increased.

[0038] The height of the detection end of the distance sensor 502 is flush with the upper end of the conveying roller on the conveying table 2, which can ensure that the edge of the adhesive film and the detection end of the sensor are on the same horizontal line, facilitating accurate detection.

[0039] The reducer 407 is mounted between the output end of the motor 406 and the lead screw 404, and the reducer 407 can proportionally adjust the rotating speed of the input end and the output end, so that the rotating number of the lead screw 404 is more accurately controlled.

[0040] Sliding strips 4011 are arranged on the two sides of the lower end surface of the mounting frame 401, and sliding grooves 4012 matched with the sliding strips 4011 are arranged on the two sides of the upper end surface of the positioning box 3, and the mounting frame 401 is slidably connected to the sliding grooves 4012 on the positioning box 3 through the sliding strips 4011, so that the moving stability is good.

[0041] The controller 6 is electrically connected to the motor 406, the distance sensor 502 and the electromagnet 503 through wires, and the controller 6 receives data feedback in real time through the wires and sends control signals.

[0042] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An EVA film winding deviation correcting device, comprising a base (1), one side of the upper end face of the base (1) is provided with a conveying table (2), characterized in that: The upper end face of the base (1) is provided with a positioning box (3) on one side of the conveying table (2), the positioning box (3) is provided with a winding mechanism (4) for correcting and winding the film, the conveying table (2) is provided with a detection assembly (5) for judging the deviation of the film, and the upper end face of the base (1) is further provided with a controller (6); The winding mechanism (4) comprises: A mounting frame (401) movably arranged on the upper end of the positioning box (3), the mounting frame (401) is provided with a winding roller (402), and one side of the mounting frame (401) is provided with a power part (403) for driving the winding roller (402); A lead screw (404) horizontally arranged in the positioning box (3), the lower end of the mounting frame (401) is provided with a connecting piece (405) threadedly connected with a nut on the lead screw (404); A motor (406) arranged at one end of the positioning box (3), the output end of the motor (406) is connected with one end of the lead screw (404).

2. The deviation rectifying device for EVA adhesive film winding according to claim 1, characterized in that: The detection assembly (5) comprises: A slot (501) symmetrically arranged on the two vertical plates adjacent to the mounting frame (401) on the conveying table (2), the slot (501) is slidably connected with a distance sensor (502) for monitoring the deviation of the film; An electromagnet (503) arranged on the inner side of the slot (501), the end of the distance sensor (502) is provided with a permanent magnet (504) matched with the electromagnet (503).

3. The deviation rectifying device for EVA adhesive film winding according to claim 2, characterized in that: The sliding stroke of the distance sensor (502) in the slot (501) is 2-4 cm.

4. The deviation rectifying device for EVA adhesive film winding according to claim 3, characterized in that: The height of the detection end of the distance sensor (502) is flush with the upper end of the conveying roller on the conveying table (2).

5. The deviation rectifying device for EVA adhesive film winding according to claim 1, characterized in that: A speed reducer (407) is arranged between the output end of the motor (406) and the lead screw (404).

6. The deviation rectifying device for EVA adhesive film winding according to claim 1, characterized in that: The lower end face of the mounting frame (401) is provided with slide strips (4011) on both sides, and the upper end face of the positioning box (3) is provided with slide grooves (4012) matched with the slide strips (4011).

7. The deviation rectifying device for EVA adhesive film winding according to claim 2, characterized in that: The controller (6) is electrically connected with the motor (406), the distance sensor (502) and the electromagnet (503) through wires.

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