An automatic full-line online winding device for EVA film

Abstract

The present invention discloses a fully automatic online winding device for an EVA film. The winding device includes a base frame, an unwinding mechanism, a winding mechanism, a roll-changing mechanism, a film-turning mechanism, a shaft-loading mechanism, a cutting mechanism, a one-way shaft-blocking mechanism and an electric cabinet. The unwinding mechanism includes an unwinding cylinder, which is hinged to a side plate. The unwinding cylinder is connected to a turning plate through a connecting plate. The one-way shaft-blocking mechanism includes a tension spring, which is connected to the side plate through a special-shaped block. An air-expansion shaft is installed between the two turning plates on both sides, and the two sides of the air-expansion shaft are connected to the special-shaped blocks in a matching manner. The winding mechanism includes a driving motor and a winding cylinder. The first driving synchronous pulley on the driving motor is connected to the first driven synchronous pulley on the winding roller through a belt, and a tension pulley is connected in a matching manner to the upper side of the belt. The present invention can solve the problems in the prior art that manual roll-changing, cutting, shaft-loading and shaft-changing are required, so as to reduce labor force and improve the production line efficiency.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and particularly to a full-automatic online winding device for EVA film. Background Art

[0002] Due to its superior properties such as high permeability, high adhesion, and good durability, EVA film is increasingly widely used in current components and various optical products. The EVA film for solar cell encapsulation is a thermosetting film based on EVA resin, added with various modified additives, and melt-extruded and cast by an extruder, featuring anti-ultraviolet, anti-aging and yellowing, and high peel strength.

[0003] Online winding is the last and extremely important process in the film production line. At present, the winding forms of domestic film production lines are various, but most of them adopt manual roll change, manual cutting, reeling, and manual shaft change operations, which not only increase labor force, but also cause material waste, and at the same time limit the overall speed of the production line. Designing a full-automatic online winding device for EVA film to improve the production line efficiency is the problem to be solved by the present invention. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a full-automatic online winding device for film to solve the problems of manual roll change, cutting, reeling, and shaft change in the prior art, so as to reduce labor force and improve the production line efficiency.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a full-automatic online winding device for EVA film, the winding device includes a base frame, an unwinding mechanism, a winding mechanism, a roll change mechanism, a film turning mechanism, a shaft loading mechanism, a cutting mechanism, a one-way shaft blocking mechanism, and an electric cabinet. The base frame is connected to the electric cabinet. The unwinding mechanism includes an unwinding cylinder, the unwinding cylinder is hinged to a side plate, the unwinding cylinder is connected to a turning plate through a connecting plate, the turning plate is connected to a connecting rod, the one-way shaft blocking mechanism includes a tension spring, the tension spring is connected to the side plate through a special-shaped block, an air shaft is installed between the two turning plates, and both sides of the air shaft are connected to the special-shaped block in a matching manner. The winding mechanism includes a driving motor and a winding cylinder. The first driving synchronous pulley on the driving motor is connected to the first driven synchronous pulley on the winding roller through a belt, and a tension pulley is connected to the upper side of the belt in a matching manner. The winding cylinder is connected to a first connecting rod through a U-shaped plate. Both ends of the winding roller are provided with a roll change mechanism and a film turning mechanism, and a cutting mechanism is provided on the upper side of the winding roller. The upper side of the base frame is fixedly installed with a shaft loading mechanism.

[0006] As a further solution of the present invention, the roll-changing mechanism includes a driving plate, an arc plate is connected to the outside of the driving plate, the arc plate is connected to a swing rod through a guide wheel, the driving sprocket on the winding roller is connected to the driven sprocket on the second connecting rod through a belt, a tensioning wheel is arranged on one side of the belt, and one end of the second connecting rod is cooperatively connected to a roll-changing driving motor.

[0007] As a further solution of the present invention, the film-turning mechanism includes a film-turning cylinder, the film-turning cylinder is connected to the driving plate through a cylinder fixing frame, and the film-turning cylinder is connected to a spherical plain bearing on the film-turning rod through a top plate.

[0008] As a further solution of the present invention, the upper shaft mechanism includes side support plates and a support beam, the side support plates are fixedly connected to the support beam, the second driving synchronous pulley on the support beam is connected to the second driven synchronous pulley through a synchronous belt, a driving shaft is installed between the second driving synchronous pulleys on both sides, the upper side of the synchronous belt is connected to a cross beam through a synchronous belt connecting plate, a support rod is arranged at the other end of the support beam, the lower side of the cross beam is connected to a cylinder fixing plate through a linear cylinder, the outside of the cylinder fixing plate is connected to a hook-shaped plate through a gripping cylinder, a slide bar is arranged on one side of the linear cylinder, the slide bar penetrates through the cylinder fixing plate and is connected to the cross beam, the second driving synchronous pulley is connected to a driving motor, a mechanical limit is arranged on the upper side at the other end of the support beam, and a travel switch is arranged on the upper side of the mechanical limit.

[0009] As a further solution of the present invention, the cutting mechanism includes a fixing frame, the fixing frame is connected to the driving plate, the fixing frame is connected to a cutter on a tool holder through a rodless cylinder, and guide rollers are arranged on both sides of the rodless cylinder.

[0010] As a further solution of the present invention, a first limit block is arranged on one side of the turning plate, and a second limit block is arranged on one side of the special-shaped block.

[0011] As a further solution of the present invention, the roller surface of the guide roller is 3-4 cm lower than the cutter.

[0012] Since the present invention adopts the above technical solutions, the advantages and positive effects of the present invention are: through the coordinated operation of the unwinding mechanism, winding mechanism, roll-changing mechanism, film-turning mechanism, upper shaft mechanism, cutting mechanism and one-way shaft-blocking mechanism, the problems of manual roll-changing, cutting, loading and shaft-changing in the prior art can be effectively solved, thereby reducing the labor force and improving the production line efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a full-automatic on-line winding device for EVA film of the present invention.

[0014] Figure 2It is the left view of a fully automatic on-line winding device for EVA film of the present invention.

[0015] Figure 3 It is a schematic structural diagram of the unwinding mechanism and the winding mechanism.

[0016] Figure 4 It is Figure 3 The enlarged view of A in

[0017] Figure 5 It is a sectional view of a fully automatic on-line winding device for EVA film of the present invention.

[0018] Figure 6 It is a schematic structural diagram of the upper shaft mechanism.

[0019] Figure 7 It is Figure 5 The enlarged view of B in

[0020] In the figure: 1 is the base frame, 101 is the side plate, 2 is the unwinding mechanism, 201 is the unwinding cylinder, 202 is the connecting plate, 203 is the connecting rod, 204 is the turning plate, 205 is the first limit block, 3 is the winding mechanism, 301 is the driving motor, 302 is the first driving synchronous pulley, 303 is the belt, 306 is the winding roller, 307 is the first connecting rod, 308 is the U-shaped plate, 310 is the winding cylinder, 311 is the tensioning pulley, 312 is the first driven synchronous pulley, 4 is the roll changing mechanism, 401 is the active plate, 402 is the arc plate, 403 is the guide pulley, 404 is the swing rod, 407 is the active sprocket, 409 is the driven sprocket, 412 is the second connecting rod, 417 is the roll changing driving motor, 5 is the film turning mechanism, 501 is the film turning cylinder, 502 is the top plate, 503 is the spherical plain bearing, 504 is the film turning rod, 506 is the cylinder fixing frame, 6 is the upper shaft mechanism, 601 is the side support plate, 602 is the support beam, 603 is the second driving synchronous pulley, 604 is the synchronous belt, 606 is the cross beam, 607 is the support rod, 608 is the driving shaft, 609 is the second driven synchronous pulley, 612 is the slide bar, 613 is the cylinder fixing plate, 614 is the hook-shaped plate, 616 is the synchronous belt connecting plate, 617 is the linear cylinder, 618 is the grasping cylinder, 620 is the mechanical limit, 621 is the driving motor, 622 is the travel switch,

[0021] 7 is the cutting mechanism, 701 is the fixing frame, 702 is the cutter, 703 is the tool holder, 704 is the rodless cylinder, 705 is the guide roller, 8 is the shaft blocking mechanism, 801 is the tension spring, 802 is the second limit block, 803 is the special-shaped block, 9 is the air shaft, 10 is the electric cabinet. Detailed implementation mode

[0022] The present invention will be further described in detail below in conjunction with the drawings and the detailed implementation mode.

[0023] AsFigures 1 - 7 As shown in the figure, an EVA film full-automatic online winding device of the present invention, the winding device includes a base frame 1, an unwinding mechanism 2, a winding mechanism 3, a roll-changing mechanism 4, a film-turning mechanism 5, an upper shaft mechanism 6, a cutting mechanism 7, a one-way shaft-blocking mechanism 8 and an electric cabinet 10. The base frame 1 is connected to the electric cabinet 10. The unwinding mechanism 2 includes an unwinding cylinder 201, the unwinding cylinder 201 is hinged to a side plate 101, the unwinding cylinder 201 is connected to a turning plate 204 through a connecting plate 202, the turning plate 204 is connected to a connecting rod 203, the one-way shaft-blocking mechanism 8 includes a tension spring 801, the tension spring 801 is connected to the side plate 101 through a special-shaped block 803, an air-expanding shaft 9 is installed between the two turning plates 204, and both sides of the air-expanding shaft 9 are connected to the special-shaped block 803 in a matching manner. The winding mechanism 3 includes a driving motor 301 and a winding cylinder 310. A first driving synchronous pulley 302 on the driving motor 301 is connected to a first driven synchronous pulley 312 on a winding roller 306 through a belt 303. A tensioning pulley 311 is connected to the upper side of the belt 303 in a matching manner. The winding cylinder 310 is connected to a first connecting rod 307 through a U-shaped plate 308. A roll-changing mechanism 4 and a film-turning mechanism 5 are arranged at both ends of the winding roller 306. A cutting mechanism 7 is arranged on the upper side of the winding roller 306. An upper shaft mechanism 6 is fixedly installed on the upper side of the base frame 1. During the winding process, the driving motor 301 drives the first driving synchronous pulley 302 to rotate, thereby driving the first driven synchronous pulley 312 to rotate through the belt 303, and then driving the winding roller 306 to rotate. The paper tube on the air-expanding shaft 9 is pressed against the winding roller 306 under the action of the cylinder and rotates with the rotation of the winding roller 306 under the action of friction. The pressing degree between the paper tube and the winding roller 306 can be adjusted by the magnitude of the pressure of the winding cylinder 310. The device is provided with a tension closed-loop adjustment system (not shown), and the rotation speed of the driving motor 301 can be automatically adjusted according to the feedback tension magnitude, so as to change the tension magnitude on the film.

[0024] Furthermore, in the present invention, the roll-changing mechanism 4 includes a driving plate 401, an arc-shaped plate 402 is connected to the outside of the driving plate 401, the arc-shaped plate 402 is connected to a swing rod 404 through a guide wheel 403, a driving sprocket 407 on the upper side of the winding roller 306 is connected to a driven sprocket 409 on a second connecting rod 412 through a belt 303. A tensioning pulley 311 is arranged on one side of the belt 303. One end of the second connecting rod 412 is connected to a roll-changing driving motor 417 in a matching manner. The roll-changing driving motor 417 drives the driving plates 401 on the left and right sides to rotate through chain and sprocket transmission, thereby driving the swing rods 404 arranged on the driving plates 401 and the guide wheels 403 arranged on the swing rods 404 to rotate. After rotating to a certain angle, the guide wheel 403 will contact the arc-shaped plate 402 and roll along the track arranged on the edge of the arc-shaped plate 402. It is convenient to use and has good practicability.

[0025] Further, the film turning mechanism 5 of the present invention includes a film turning cylinder 501, the film turning cylinder 501 is connected to the active plate 401 through a cylinder fixing frame 506, and the film turning cylinder 501 is connected to a joint bearing 503 on a film turning rod 504 through a top plate 502. When the rodless cylinder 704 drives the cutter 702 to quickly slide from one side of the adhesive film to the other side to quickly cut the adhesive film, the film turning cylinder 501 ejects to turn the remaining adhesive film onto the new paper tube. Under the frictional force between the winding roller 306 and the paper tube, the adhesive film will be wound onto the new paper tube. When the cutter returns to its original position, the film turning cylinder 501 retracts, which has good practicability.

[0026] Further, the upper shaft mechanism 6 of the present invention includes a side support plate 601 and a support beam 602. The side support plate 601 is fixedly connected to the support beam 602. A second driving synchronous pulley 603 on the support beam 602 is connected to a second driven synchronous pulley 609 through a synchronous belt 604. A driving shaft 608 is installed between the second driving synchronous pulleys 603 on both sides. The upper side of the synchronous belt 604 is connected to a cross beam 606 through a synchronous belt connecting plate 616. The other end of the support beam 602 is provided with a support rod 607. The lower side of the cross beam 606 is connected to a cylinder fixing plate 613 through a straight cylinder 617. The outside of the cylinder fixing plate 613 is connected to a hook-shaped plate 614 through a grasping cylinder 618. A slide rod 612 is provided on one side of the straight cylinder 617. The slide rod 612 penetrates through the cylinder fixing plate 613 and is connected to the cross beam 606. The second driving synchronous pulley 603 is connected to a driving motor 621. The upper side of the other end of the support beam 602 is provided with a mechanical limit 620, and a travel switch 622 is provided above the mechanical limit 620. The driving motor 621 drives the driving shaft 608 to rotate, so that the second driving synchronous pulleys 603 on both sides drive the synchronous belt 604 to run. Further, the synchronous belt connecting plate 616 on the synchronous belt 604 drives the cross beam 606 to reciprocate. When it is necessary to replace the air expanding shaft 9, the straight cylinder 617 descends to the bottom, and the grasping cylinder 618 ejects to drive the hook-shaped plate 614 to hook the air expanding shaft 9 to be replaced. Then the straight cylinder 617 returns to its original position, and the driving motor 621 operates. Driven by the synchronous belt 604, the cross beam 606 drives the cylinders arranged thereon along the linear guide rail, so as to drive the air expanding shaft 9 to be conveyed forward. When reaching the set position, the travel switch 622 sends a signal, the motor stops rotating, the straight cylinder 617 ejects, the grasping cylinder 618 returns to its original position, the hook-shaped plate 614 releases the air expanding shaft 9, and the air expanding shaft 9 slides onto the working station.

[0027] Furthermore, in the present invention, the cutting mechanism 7 includes a fixed frame 701, which is connected to the active plate 401. The fixed frame 701 is connected to a cutter 702 on a tool holder 703 through a rodless cylinder 704. Guide rollers 705 are arranged on both sides of the rodless cylinder 704. The symmetrically arranged guide rollers 705 serve as the tracks of the rodless cylinder 704. By driving the cutter 702 on the tool holder 703 to move back and forth through the rodless cylinder 704, the adhesive film can be quickly cut, which is convenient and efficient to use.

[0028] Furthermore, in the present invention, a first limit block 205 is provided on one side of the flap 204, and a second limit block 802 is provided on one side of the special-shaped block 803. The first limit block 205 can prevent the flap 204 from rotating excessively and causing the air shaft 9 to fall; the second limit block 802 can limit the special-shaped block 803.

[0029] Furthermore, in the present invention, the roller surface of the guide roller 705 is 3 - 4 cm lower than that of the cutter 702. The fact that the roller surface of the guide roller 705 is lower than that of the cutter 702 helps to cut the adhesive film and avoid damage to the adhesive film.

[0030] The working principle of the full-automatic online winding device for EVA adhesive film of the present invention is as follows:

[0031] During roll change, the roll change drive motor drives the active plates on both sides to rotate through chain and sprocket transmission, thereby driving the swing rods arranged on the active plates and the guide wheels arranged on the swing rods to rotate. When rotated to a certain angle, the guide wheels will contact the arc plate and roll along the track arranged on the edge of the arc plate. During this process, the swing rods will move the new air shaft and the paper tube away from the original position and gradually slide into the U-shaped groove formed between the active plate and the swing rod, and pause at the cutting position (i.e., when the U-shaped groove is at a 90-degree angle to the horizontal plane). After the adhesive film is cut by the cutter, the pistons of the winding cylinders on both sides are pushed out, and the full roll is moved forward by the U-shaped plates on both sides. When reaching the limit position, the air shaft is separated from the U-shaped groove of the fork, and the full roll will automatically slide to the stop station under the action of gravity; at the same time, the guide wheels continue to move forward along the track on the arc plate, so that the new air shaft and the paper tube continue to be stuck between the active plate and the swing rod and make a circular motion. At this time, the winding cylinders have also retracted in place, and the new air shaft and the paper tube will slide from the U-shaped groove formed between the active plate and the swing rod into the U-shaped groove of the U-shaped plate and keep pressing against the winding roller to start a new winding process. At this time, the guide wheels are also about to roll to the end of the arc plate track, and when moving forward, the guide wheels are separated from the arc plate track. Finally, blocked by the air shaft, the swing rod will turn 90° through the gap between the air shaft and the winding roller and return to the initial position with the active plate, waiting for the next roll change.

[0032] During the roll change process, the driving plate drives the cutting mechanism and the film turning mechanism to move synchronously. When the guide roller rolls along the track arranged on the edge of the arc plate, the guide roller in the cutting mechanism will gradually contact the adhesive film and lift the adhesive film. When the U-shaped groove formed by the driving plate and the swing rod is at 90 degrees to the horizontal plane, the air shaft to be replaced and the paper tube will press on the winding roller due to gravity. At this time, the rodless cylinder drives the cutter to quickly slide from one side of the adhesive film to the other side, quickly cutting the adhesive film. At the same time, the film turning cylinder ejects, turning the remaining adhesive film onto the new paper tube. Under the friction force between the winding roller and the paper tube, the adhesive film will be wound onto the new paper tube. At this time, the cutter returns to its original position and the film turning cylinder retracts. The new air shaft and paper tube continue to be stuck between the driving plate and the swing rod and move along the circumference until the roll change ends.

[0033] When the adhesive film is cut, the air shaft of the wound adhesive film roll has been separated from the U-shaped plate. The film roll will slide down along the inclined plane track on the side plate under the action of gravity and fall on the unwinding station. At this time, press the unwinding button, and the unwinding cylinder ejects, driving the turning plate to make a circular motion, so that the film roll in the turning plate groove falls onto the transfer cart for subsequent inspection and packing processes. Then, the air shaft to be replaced is placed in the turning plate groove through the transfer cart. Press the pre-shaft button, and the cylinder retracts, bringing the air shaft to the shaft replacement station. Due to the action of the one-way shaft blocking mechanism, the limit ring provided on the air shaft, and the track provided on the side plate, it is ensured that the air shaft will not slide forward and run out of the track, thus ensuring the accuracy of the position of the air shaft during subsequent shaft loading, roll change, and winding processes.

[0034] When a roll change is completed and it is detected that the new air shaft to be replaced is in place, the system gives a signal. The linear cylinder moves down to the bottom, the grasping cylinder ejects and drives the hook-shaped plate to hook the air shaft to be replaced. Then the linear cylinder returns to its original position, the driving motor operates, and driven by the synchronous belt, the cross beam drives the cylinder arranged on it to move along the linear guide rail, thereby driving the air shaft to be conveyed forward. When reaching the set position, the travel switch issues a signal, the motor stops rotating, the linear cylinder ejects, the grasping cylinder returns to its original position, and the hook-shaped plate releases the air shaft. The air shaft slides onto the station and waits for the next roll change. At this time, the linear cylinder returns to its original position, the grasping cylinder ejects, and at the same time the motor rotates in the reverse direction, causing the cross beam and the cylinder to return to the initial position. The travel switch issues a signal and the motor stops rotating. One shaft loading action is completed and waits for the start of the next shaft loading.

[0035] Although the specific implementation manners of the present invention are described above, those skilled in the art should understand that these are only examples. Various changes or modifications can be made to this implementation manner without departing from the principle and essence of the present invention. The protection scope of the present invention is only defined by the appended claims.

Claims

1. An automatic online winding device for EVA film, Characterized in that: The winding device includes a base frame (1), a coil unloading mechanism (2), a winding mechanism (3), a coil changing mechanism (4), a film turning mechanism (5), an upper shaft mechanism (6), a cutting mechanism (7), a one-way shaft blocking mechanism (8) and an electric cabinet (10). The base frame (1) is connected to the electric cabinet (10). The coil unloading mechanism (2) includes a coil unloading cylinder (201), the coil unloading cylinder (201) is hinged to a side plate (101), the coil unloading cylinder (201) is connected to a turning plate (204) through a connecting plate (202), the turning plate (204) is connected to a connecting rod (203), the one-way shaft blocking mechanism (8) includes a tension spring (801), the tension spring (801) is connected to the side plate (101) through a special-shaped block (803), an air shaft (9) is installed between the two turning plates (204), and both sides of the air shaft (9) are connected to the special-shaped block (803) in a matching manner. The winding mechanism (3) includes a driving motor (301) and a winding cylinder (310). The first driving synchronous pulley (302) on the driving motor (301) is connected to the first driven synchronous pulley (312) on the winding roller (306) through a belt (303). A tension pulley (311) is connected to the upper side of the belt (303). The winding cylinder (310) is connected to a first connecting rod (307) through a U-shaped plate (308). The two ends of the winding roller (306) are provided with a coil changing mechanism (4) and a film turning mechanism (5). The cutting mechanism (7) is provided on the upper side of the winding roller (306). The upper side of the base frame (1) is fixedly installed with an upper shaft mechanism (6).

2. An automatic online winding device for EVA film according to claim 1, Characterized in that: The coil changing mechanism (4) includes a main plate (401), an arc plate (402) is connected to the outside of the main plate (401), the arc plate (402) is connected to a swing rod (404) through a guide wheel (403). The upper driving sprocket (407) of the winding roller (306) is connected to the driven sprocket (409) on the second connecting rod (412) through a belt (303). A tension pulley (311) is provided on one side of the belt (303). One end of the second connecting rod (412) is connected to a coil changing driving motor (417) in a matching manner.

3. An automatic online winding device for EVA film according to claim 1, Characterized in that: The film turning mechanism (5) includes a film turning cylinder (501), the film turning cylinder (501) is connected to the main plate (401) through a cylinder fixing frame (506), and the film turning cylinder (501) is connected to a joint bearing (503) on a film turning rod (504) through a top plate (502).

4. An automatic online winding device for EVA film according to claim 1, Characterized in that: The upper shaft mechanism (6) includes side support plates (601) and a support beam (602). The side support plates (601) are fixedly connected to the support beam (602). The second driving synchronous pulley (603) on the support beam (602) is connected to the second driven synchronous pulley (609) through a synchronous belt (604). A driving shaft (608) is installed between the second driving synchronous pulleys (603) on both sides. The upper side of the synchronous belt (604) is connected to a cross beam (606) through a synchronous belt connecting plate (616). The other end of the support beam (602) is provided with a support rod (607). The lower side of the cross beam (606) is connected to a cylinder fixing plate (613) through a linear cylinder (617). The outer side of the cylinder fixing plate (613) is connected to a hook-shaped plate (614) through a gripping cylinder (618). A slide bar (612) is arranged on one side of the linear cylinder (617). The slide bar (612) penetrates through the cylinder fixing plate (613) and is connected to the cross beam (606). The second driving synchronous pulley (603) is connected to a driving motor (621). The upper side of the other end of the support beam (602) is provided with a mechanical limit (620), and a travel switch (622) is arranged above the mechanical limit (620).

5. The fully automatic online winding device for EVA film according to claim 1, wherein: The cutting mechanism (7) includes a fixing frame (701). The fixing frame (701) is connected to the active plate (401). The fixing frame (701) is connected to a cutter (702) on a tool holder (703) through a rodless cylinder (704). Guide rollers (705) are arranged on both sides of the rodless cylinder (704).

6. The fully automatic online winding device for EVA film according to claim 1, wherein: A first limit block (205) is arranged on one side of the flap (204), and a second limit block (802) is arranged on one side of the special-shaped block (803).

7. The fully automatic online winding device for EVA film according to claim 5, wherein: The roller surface of the guide roller (705) is 3 - 4 cm lower than that of the cutter (702).

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