Rewinding device for anti-electromagnetic interference film

Abstract

The utility model provides a rewinding device for an anti-electromagnetic interference film, and relates to the technical field of anti-electromagnetic interference film production equipment. The device comprises a rack, a winding roller, a deviation rectifying assembly, an unwinding roller, a thickness detecting assembly and a controller, the rack is rotationally connected with the winding roller, and the winding roller is in transmission connection with a winding motor; the deviation rectifying assembly comprises a deviation rectifying frame, a deviation rectifying roller and a driving device, a sliding rail is arranged on the rack, the deviation rectifying frame is arranged on the sliding rail, the driving device can drive the deviation rectifying frame to move along the sliding rail, the unwinding roller and the deviation rectifying roller are both rotationally connected with the deviation rectifying frame, and an unwinding motor is connected to the unwinding roller; the thickness detection assembly comprises a rolling-up detection part and a rolling-down detection part, the rolling-up detection part can detect the thickness of the belt material on the rolling-up roller, the rolling-down detection part can detect the thickness of the belt material on the rolling-down roller, and the controller can control the rotating speed of the rolling-up motor and the rotating speed of the rolling-down motor according to the detection result. According to the device, the situation that the strip is excessively lengthened and broken can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of anti-electromagnetic interference film production equipment, and in particular to a rewinding device for anti-electromagnetic interference film. Background Art

[0002] Anti-electromagnetic interference film is a flexible film that can absorb and reduce electromagnetic waves projected onto its surface. When the anti-electromagnetic interference film strip is packaged using a reel, part of the strip will be partially offset along the axial direction of the reel. At this time, the film rewinder must be used to rewind the strip.

[0003] The existing film rewinding machine generally includes a frame, a unwinding roller, a winding roller and a correction roller. The unwinding roller is connected to a unwinding motor for driving the unwinding roller to rotate, and the winding roller is connected to a winding motor for driving the winding roller to rotate. The correction roller is arranged on the frame between the unwinding roller and the winding roller and can move along the axial direction of the correction roller itself. The correction roller is also provided with two abutment sleeves for abutting the side edges of the flexible film strip. When the flexible film strip is wound to the offset part, the worker can move the correction roller manually or with other equipment to correct the offset part.

[0004] However, as the rewinding work continues to advance, the diameter of the strip on the winding roller will increase, and the amount of strip that can be wound up with each rotation of the winding roller will also increase, while the diameter of the strip on the unwinding roller will decrease, and the amount of strip that can be released with each rotation of the unwinding roller will also decrease, thereby gradually tightening and stretching the strip between the unwinding roller and the winding roller, and finally breaking.

[0005] In view of this, it is necessary to provide a rewinding device for anti-electromagnetic interference film. Utility Model Content

[0006] In order to solve the problem that in the existing film material rewinding machine, the speed of the winding roller of the film gradually increases while the speed of the unwinding roller of the film gradually decreases during rewinding, thereby causing the film between the unwinding roller and the winding roller to gradually become tense, elongated, and even broken, the present application provides a rewinding device for anti-electromagnetic interference film.

[0007] The present application provides a rewinding device for an anti-electromagnetic interference film, which adopts the following technical solution: comprising a frame, a winding roller, a deviation correction component, an unwinding roller, a thickness detection component and a controller, wherein the frame is rotatably connected to the winding roller, and a winding motor for driving the winding roller to rotate is transmission-connected to the rotating shaft of the winding roller;

[0008] The deviation rectifying assembly includes a deviation rectifying frame, a deviation rectifying roller and a driving device. A slide rail is arranged on the machine frame along the axial direction of the winding roller. The deviation rectifying frame is arranged on the slide rail. The driving device is in transmission connection with the deviation rectifying frame and can drive the deviation rectifying frame to move along the slide rail. Both the unwinding roller and the deviation rectifying roller are rotatably connected to the deviation rectifying frame. And a unwinding motor for driving the unwinding roller to rotate is in transmission connection with the rotating shaft of the unwinding roller;

[0009] The thickness detection assembly includes a winding roller detection piece and an unwinding roller detection piece. The winding roller detection piece can abut against the strip material wound on the winding roller and detect the thickness of the strip material. And the winding roller detection piece is electrically connected to the controller and can feedback the detection result to the controller. The unwinding roller detection piece can abut against the strip material wound on the unwinding roller and detect the thickness of the strip material. And the unwinding roller detection piece is electrically connected to the controller and can feedback the detection result to the controller;

[0010] Both the winding motor and the unwinding motor are electrically connected to the controller. And the controller can control the rotation speed of the winding motor according to the detection result of the winding roller detection piece and control the rotation speed of the unwinding motor according to the detection result of the unwinding roller detection piece.

[0011] By adopting the above technical scheme, after the rewinding device for the electromagnetic interference resistant film is started, the winding roller detection piece can detect the thickness of the strip material wound on the winding roller and feedback the detection result to the controller. And the unwinding roller detection piece can also detect the thickness of the strip material wound on the unwinding roller and feedback the detection result to the controller. So that the controller can adjust the rotation speed of the winding motor in real time according to the detection result of the winding roller detection piece and adjust the rotation speed of the unwinding motor in real time according to the detection result of the unwinding roller detection piece. Then the speed of the strip material released by the unwinding roller can always be consistent with the speed of the strip material wound by the winding roller. Thus, it can ensure that the strip material between the unwinding roller and the winding roller will not be overstretched, broken, etc.

[0012] Specifically, the winding roller detection piece includes a winding roller abutting frame, a winding roller abutting roller and a winding roller driving cylinder. The bottom of the winding roller abutting frame is hinged to the machine frame. The winding roller abutting roller is rotatably connected to the top of the winding roller abutting frame. And the winding roller abutting roller can rotate around the hinge axis of the winding roller abutting frame in the direction close to or away from the winding roller. The cylinder body of the winding roller driving cylinder is hinged to the machine frame. The piston rod of the winding roller driving cylinder is hinged to the winding roller abutting frame. The piston rod can extend and drive the winding roller abutting frame to drive the winding roller abutting roller to abut against the strip material on the winding roller. A displacement sensor is arranged on the winding roller driving cylinder. The displacement sensor is electrically connected to the controller and can detect the extension amount of the piston rod of the winding roller driving cylinder;

[0013] The unwinding roller detection component includes an unwinding roller abutting frame, an unwinding roller abutting roller, and an unwinding roller driving cylinder. The bottom of the unwinding roller abutting frame is hinged to the machine frame. The unwinding roller abutting roller is rotatably connected to the top of the unwinding roller abutting frame, and the unwinding roller abutting roller can rotate around the hinge axis of the unwinding roller abutting frame in a direction approaching or departing from the unwinding roller. The cylinder body of the unwinding roller driving cylinder is hinged to the machine frame, and the piston rod of the unwinding roller driving cylinder is hinged to the unwinding roller abutting frame. The piston rod can extend and drive the unwinding roller abutting frame to drive the unwinding roller abutting roller to abut against the strip material on the unwinding roller. A displacement sensor is provided on the unwinding roller driving cylinder, and the displacement sensor is electrically connected to the controller and can detect the elongation of the piston rod of the unwinding roller driving cylinder.

[0014] By adopting the above technical solution, before starting the rewinding device for the anti-electromagnetic interference film, the worker can first control the piston rods of the winding roller driving cylinder and the unwinding roller driving cylinder to extend until the winding roller abutting roller abuts against the strip material on the winding roller, and the unwinding roller abutting roller also abuts against the strip material on the unwinding roller. The controller will calculate the diameter of the strip material roll on the unwinding roller by referring to the elongation of the piston rod of the unwinding roller driving cylinder, the distance between the hinge axis of the unwinding roller abutting frame itself and the unwinding roller abutting roller, and the distance between the hinge axis of the unwinding roller abutting frame itself and the hinge axis of the piston rod of the unwinding roller driving cylinder on the unwinding roller abutting frame, and calculate the diameter of the strip material roll on the winding roller by referring to the elongation of the piston rod of the winding roller driving cylinder, the distance between the hinge axis of the winding roller abutting frame itself and the winding roller abutting roller, and the distance between the hinge axis of the winding roller abutting frame itself and the hinge axis of the piston rod of the winding roller driving cylinder on the winding roller abutting frame. Then, according to these data, the rotation speeds of the winding motor and the unwinding motor at startup are regulated. As the rewinding work progresses continuously, the diameter of the strip material roll on the winding roller will gradually increase and push the piston rod of the winding roller driving cylinder back into the cylinder body continuously, so that the controller can calculate the diameter of the strip material roll on the winding roller in real time through calculation, and then regulate the rotation speeds of the winding motor and the unwinding motor according to this data to ensure that the speed at which the unwinding roller releases the strip material is always consistent with the speed at which the winding roller winds up the strip material.

[0015] Specifically, the deviation rectifying component further includes a pressing roller. The pressing roller is rotatably connected to the deviation rectifying frame, and a deviation rectifying channel is formed between the pressing roller and the deviation rectifying roller. The strip material on the unwinding roller can pass through the deviation rectifying channel and be connected to the winding roller and be abutted between the roller surfaces of the deviation rectifying roller and the pressing roller.

[0016] By adopting the above technical solution, when winding the offset part on the strip material, the worker can drive the deviation rectifying frame to move along the slide rail by controlling the driving device, so as to drive the unwinding roller, the deviation rectifying roller, and the pressing roller to move together through the deviation rectifying frame, and then rectify the strip material in the deviation rectifying channel. Since this part of the strip material is abutted between the roller surfaces of the deviation rectifying roller and the pressing roller, it can be ensured that this part of the strip material will not be damaged such as wrinkled or indented when being rectified.

[0017] Further, the deviation rectifying assembly further includes a deviation rectifying sensor, which is arranged on the frame and can detect whether the strip between the unwinding roller and the winding roller is offset along the length direction of the slide rail. The deviation rectifying sensor is connected to the controller and can feed back the offset result to the controller. The controller is electrically connected to the driving device and can control the driving device to drive the deviation rectifying frame to move.

[0018] By adopting the above technical solution, the deviation rectifying sensor can detect whether the strip between the unwinding roller and the winding roller is offset along the length direction of the slide rail and feed back the offset result to the controller, and the controller can control the driving device to drive the deviation rectifying frame to move according to the offset result, so as to realize automatic deviation rectification of the strip.

[0019] Further, a plurality of tension rollers are further included. The tension rollers are arranged between the unwinding roller and the deviation rectifying channel, and the tension rollers are rotatably connected to the deviation rectifying frame;

[0020] The tension rollers are also arranged between the winding roller and the deviation rectifying channel, and the tension rollers are rotatably connected to the frame.

[0021] By adopting the above technical solution, arranging a plurality of tension rollers can tension the strip between the unwinding roller and the winding roller.

[0022] Further, anti-slip grooves are formed on each of the tension rollers.

[0023] By adopting the above technical solution, forming the anti-slip grooves can increase the friction between the tension rollers and the strip.

[0024] Further, a length measuring roller and a length measuring device are further included. The length measuring roller is rotatably connected to the frame, and a length measuring channel is formed between the length measuring roller and the adjacent tension roller. The strip can pass through the length measuring channel and drive the length measuring roller to rotate, and the detection head of the length measuring device abuts against the length measuring roller.

[0025] By adopting the above technical solution, the strip can pass through the length measuring channel and drive the length measuring roller to rotate, and the detection head of the length measuring device abuts against the length measuring roller, so as to obtain the overall length of the strip through the length measuring device.

[0026] Specifically, a backlight board is further arranged on the frame. The backlight board is arranged between the winding roller and the deviation rectifying channel, and the strip can pass above the board surface of the backlight board.

[0027] By adopting the above technical solution, the backlight board can illuminate the strip passing above the board surface of the backlight board, so as to facilitate workers to observe whether there is dirt on this part of the strip.

[0028] In summary, the present application includes the following beneficial technical effects:

[0029] It includes a frame, a winding roller, a deviation rectifying assembly, an unwinding roller, a thickness detection assembly and a controller. The frame is rotatably connected to the winding roller, and a winding motor for driving the rotation of the winding roller is drivingly connected to the rotating shaft of the winding roller; the deviation rectifying assembly includes a deviation rectifying frame, a deviation rectifying roller and a driving device. A slide rail is provided on the frame along the axial direction of the winding roller. The deviation rectifying frame is arranged on the slide rail. The driving device is drivingly connected to the deviation rectifying frame and can drive the deviation rectifying frame to move along the slide rail. The unwinding roller and the deviation rectifying roller are both rotatably connected to the deviation rectifying frame, and an unwinding motor for driving the rotation of the unwinding roller is drivingly connected to the rotating shaft of the unwinding roller; the thickness detection assembly includes a winding roller detection piece and an unwinding roller detection piece. The winding roller detection piece can abut against the strip wound on the winding roller and detect the thickness of the strip, and the winding roller detection piece is electrically connected to the controller and can feedback the detection result to the controller. The unwinding roller detection piece can abut against the strip wound on the unwinding roller and detect the thickness of the strip, and the unwinding roller detection piece is electrically connected to the controller and can feedback the detection result to the controller; the winding motor and the unwinding motor are both electrically connected to the controller, and the controller can control the rotation speed of the winding motor according to the detection result of the winding roller detection piece and control the rotation speed of the unwinding motor according to the detection result of the unwinding roller detection piece, so that the speed at which the unwinding roller releases the strip can always be consistent with the speed at which the winding roller winds the strip, thereby ensuring that the strip between the unwinding roller and the winding roller will not be overstretched, broken, etc. Description of the Drawings

[0030] Figure 1 is a perspective view of a rewinding device for an electromagnetic interference resistant film according to the present application;

[0031] Figure 2 is a perspective view of another angle of a rewinding device for an electromagnetic interference resistant film according to the present application;

[0032] Figure 3 is a schematic cross-sectional view taken along the width direction of the frame of a rewinding device for an electromagnetic interference resistant film according to the present application;

[0033] Figure 4 is along Figure 3 a schematic cross-sectional view taken along the A-A direction in

[0034] Reference numerals: 1, frame; 11, slide rail; 2, winding roller; 21, winding motor; 3, deviation rectifying assembly; 31, deviation rectifying frame; 32, deviation rectifying roller; 33, driving device; 34, crimping roller; 35, deviation rectifying sensor; 351, sliding bracket; 352, slide bar; 4, unwinding roller; 41, unwinding motor; 5, thickness detection assembly; 51, winding roller detection member; 511, winding roller abutting frame; 512, winding roller abutting roller; 513, winding roller driving cylinder; 52, unwinding roller detection member; 521, unwinding roller abutting frame; 522, unwinding roller abutting roller; 523, unwinding roller driving cylinder; 6, tensioning roller; 61, friction increasing groove; 7, length measuring roller; 8, length meter; 9, backlight board. Detailed implementation mode

[0035] Figure 1 is a perspective view of a rewinding device for an electromagnetic interference resistant film according to the present application, Figure 2 is a perspective view of another angle of a rewinding device for an electromagnetic interference resistant film according to the present application, Figure 3 is a schematic cross-sectional view taken along the width direction of the frame of a rewinding device for an electromagnetic interference resistant film according to the present application. Refer to Figure 1 、 Figure 2 and Figure 3 , a rewinding device for an electromagnetic interference resistant film provided by the present application includes: a frame 1, a winding roller 2, a deviation rectifying assembly 3, an unwinding roller 4, a thickness detection assembly 5 and a controller. The frame 1 is rotatably connected to the winding roller 2, and a winding motor 21 for driving the winding roller 2 to rotate is drivingly connected to the rotating shaft of the winding roller 2; the deviation rectifying assembly 3 includes a deviation rectifying frame 31, a deviation rectifying roller 32, a driving device 33, and a crimping roller 34. A slide rail 11 is provided on the frame 1 along the axial direction of the winding roller 2, and the deviation rectifying frame 31 is arranged on the slide rail 11.

[0036] Figure 4 is a schematic cross-sectional view taken along the Figure 3 A-A direction in Figure 3 and Figure 4 . Refer to

[0037] Refer to Figure 2 and Figure 4, a slide bar 352 is further provided on the frame 1 along the length direction of the slide rail 11. The deviation rectifying sensor 35 is arranged on the slide bar 352 through a sliding bracket 351 (the sliding bracket 351 belongs to the prior art and will not be elaborated here) and can slide along the slide bar 352. The deviation rectifying sensor 35 can be a BF700DT type CCD sensor. The controller is electrically connected to the deviation rectifying sensor 35 and the driving device 33; as Figure 4 shown, after moving the CCD sensor above one side edge of the strip material, the deviation rectifying sensor 35 can detect whether the strip material between the unwinding roller 4 and the winding roller 2 deviates along the length direction of the slide rail 11 and feed the deviation result back to the controller. The controller can control the driving device 33 to drive the deviation rectifying frame 31 to move according to the deviation result, so as to drive the unwinding roller 4, the deviation rectifying roller 32 and the crimping roller 34 to move together through the deviation rectifying frame 31, and then rectify the strip material in the deviation rectifying channel. Since this part of the strip material is abutted between the roller surfaces of the deviation rectifying roller 32 and the crimping roller 34, it can also ensure that this part of the strip material will not be damaged such as wrinkled or indented when being rectified.

[0038] See Figure 1 and Figure 3 , the thickness detection assembly 5 includes a winding roller detection member 51 and an unwinding roller detection member 52. The winding roller detection member 51 includes a winding roller abutting frame 511, a winding roller abutting roller 512 and a winding roller driving cylinder 513. The bottom of the winding roller abutting frame 511 is hinged to the frame 1. The winding roller abutting roller 512 is rotatably connected to the top of the winding roller abutting frame 511, and the winding roller abutting roller 512 can rotate around the hinge of the winding roller abutting frame 511 in a direction close to or away from the winding roller 2. The cylinder body of the winding roller driving cylinder 513 is hinged to the frame 1, and the piston rod of the winding roller driving cylinder 513 is hinged to the winding roller abutting frame 511. The piston rod can extend and drive the winding roller abutting frame 511 to drive the winding roller abutting roller 512 to abut against the strip material on the winding roller 2. A displacement sensor is provided on the winding roller driving cylinder 513, and the displacement sensor is electrically connected to the controller and can detect the extension amount of the piston rod of the winding roller driving cylinder 513; the unwinding roller detection member 52 includes an unwinding roller abutting frame 521, an unwinding roller abutting roller 522 and an unwinding roller driving cylinder 523. The bottom of the unwinding roller abutting frame 521 is hinged to the frame 1. The unwinding roller abutting roller 522 is rotatably connected to the top of the unwinding roller abutting frame 521, and the unwinding roller abutting roller 522 can rotate around the hinge of the unwinding roller abutting frame 521 in a direction close to or away from the unwinding roller 4. The cylinder body of the unwinding roller driving cylinder 523 is hinged to the frame 1, and the piston rod of the unwinding roller driving cylinder 523 is hinged to the unwinding roller abutting frame 521. The piston rod can extend and drive the unwinding roller abutting frame 521 to drive the unwinding roller abutting roller 522 to abut against the strip material on the unwinding roller 4. A displacement sensor is also provided on the unwinding roller driving cylinder 523, and the displacement sensor is electrically connected to the controller and can detect the extension amount of the piston rod of the unwinding roller driving cylinder 523.

[0039] With the above settings, before starting the rewinding device for the anti-electromagnetic interference film, the worker can first control the piston rods of the take-up roller driving cylinder 513 and the pay-off roller driving cylinder 523 to extend until the take-up roller abutting roller 512 abuts against the strip material on the take-up roller 2, and the pay-off roller abutting roller 522 also abuts against the strip material on the pay-off roller 4. The controller will calculate the diameter of the strip material roll on the pay-off roller 4 by referring to the extension amount of the piston rod of the pay-off roller driving cylinder 523, the distance between the hinge shaft of the pay-off roller abutting frame 521 itself and the pay-off roller abutting roller 522, and the distance between the hinge shaft of the pay-off roller abutting frame 521 itself and the hinge shaft of the piston rod of the pay-off roller driving cylinder 523 on the pay-off roller abutting frame 521. And calculate the diameter of the strip material roll on the take-up roller 2 by referring to the extension amount of the piston rod of the take-up roller driving cylinder 513, the distance between the hinge shaft of the take-up roller abutting frame 511 itself and the take-up roller abutting roller 512, and the distance between the hinge shaft of the take-up roller abutting frame 511 itself and the hinge shaft of the piston rod of the take-up roller driving cylinder 513 on the take-up roller abutting frame 511. Then, according to these data, the rotational speeds of the take-up motor 21 and the pay-off motor 41 at startup are regulated. As the rewinding work progresses continuously, the diameter of the strip material roll on the take-up roller 2 will gradually increase and continuously push the piston rod of the take-up roller driving cylinder 513 back into the cylinder body, so that the controller can calculate the diameter of the strip material roll on the take-up roller 2 in real time through calculation, and then regulate the rotational speeds of the take-up motor 21 and the pay-off motor 41 according to this data, ensuring that the speed at which the pay-off roller 4 releases the strip material is always consistent with the speed at which the take-up roller 2 winds up the strip material, thereby ensuring that the strip material between the pay-off roller 4 and the take-up roller 2 will not be overstretched, snapped, etc.

[0040] It should be noted that the above take-up roller driving cylinder 513 and pay-off roller driving cylinder 523 can adopt pneumatic push rods or electric telescopic cylinders without self-locking functions to ensure that the piston rod of the take-up roller driving cylinder 513 can be pushed back into the cylinder body by the strip material roll on the take-up roller 2; the rotating shaft of the pay-off roller abutting roller 522 can be connected to the pay-off roller abutting frame 521 by a telescopic cylinder, and the rotating shaft of the take-up roller abutting roller 512 can also be connected to the take-up roller abutting frame 511 by a telescopic cylinder. The telescopic cylinder here can adopt an electric telescopic cylinder with self-locking function to ensure that the piston rod of the telescopic cylinder will not be pushed back into the cylinder body by an external force.

[0041] See Figure 1 and Figure 3 , a rewinding device for an anti-electromagnetic interference film further includes a plurality of tension rollers 6. Tension rollers 6 are provided between the pay-off roller 4 and the deviation rectifying channel, and the tension roller 6 is rotatably connected to the deviation rectifying frame 31; tension rollers 6 are also provided between the take-up roller 2 and the deviation rectifying channel, and the tension roller 6 is rotatably connected to the frame 1, so as to be able to tension the strip material between the pay-off roller 4 and the take-up roller 2 by setting a plurality of tension rollers 6. Helical friction increasing grooves 61 are provided on each tension roller 6 to be able to increase the friction force between the tension roller 6 and the strip material.

[0042] See Figure 2 andFigure 3 A rewinding device for an anti-electromagnetic interference film also includes a meter roller 7 and a meter device 8. The meter roller 7 is rotatably connected to the frame 1, and a meter channel is formed between the meter roller 7 and the adjacent tensioning roller 6. The strip can pass through the meter channel and drive the meter roller 7 to rotate. The detection head of the meter device 8 abuts against the meter roller 7 so that the overall length of the strip can be obtained through the meter device 8; a backlight plate 9 is also provided on the frame 1. The backlight plate 9 is provided between the winding roller 2 and the deviation correction channel. The strip can pass over the surface of the backlight plate 9 so that the backlight plate 9 can illuminate the strip passing over the surface of the backlight plate 9, thereby making it convenient for workers to observe whether there is dirt on this part of the strip.

[0043] The working principle of the rewinding device for anti-electromagnetic interference film of the present application when in use is as follows:

[0044] The invention comprises a frame 1, a winding roller 2, a deflection correction component 3, an unwinding roller 4, a thickness detection component 5 and a controller. The frame 1 is rotatably connected to the winding roller 2, and a winding motor 21 for driving the winding roller 2 to rotate is connected to the rotating shaft of the winding roller 2; the deflection correction component 3 comprises a deflection correction frame 31, a deflection correction roller 32 and a driving device 33. A slide rail 11 is provided on the frame 1 along the axial direction of the winding roller 2, and the deflection correction frame 31 is arranged on the slide rail 11. The driving device 33 is connected to the deflection correction frame 31 and can drive the deflection correction frame 31 to move along the slide rail 11. The unwinding roller 4 and the deflection correction roller 32 are both rotatably connected to the deflection correction frame 31, and an unwinding motor 41 for driving the unwinding roller 4 to rotate is connected to the rotating shaft of the unwinding roller 4; the thickness detection component 5 comprises a winding roller detection component 51 and a unwinding roller detection component 52, and the winding roller detection component 51 can be connected to the unwinding roller 4 The strip wound on the winding roller 2 abuts against and detects the thickness of the strip, and the winding roller detection component 51 is electrically connected to the controller and can feed back the detection result to the controller, the unwinding roller detection component 52 can abut against the strip wound on the unwinding roller 4 and detect the thickness of the strip, and the unwinding roller detection component 52 is electrically connected to the controller and can feed back the detection result to the controller; the winding motor 21 and the unwinding motor 41 are both electrically connected to the controller, and the controller can control the rotation speed of the winding motor 21 according to the detection result of the winding roller detection component 51 and control the rotation speed of the unwinding motor 41 according to the detection result of the unwinding roller detection component 52, so that the speed at which the unwinding roller 4 releases the strip can always be consistent with the speed at which the winding roller 2 winds up the strip, thereby ensuring that the strip between the unwinding roller 4 and the winding roller 2 will not be over-stretched, broken, etc.

[0045] It should be noted that the above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rewinding device for an electromagnetic interference-resistant film, which is used for rewinding a strip of electromagnetic interference-resistant film, and is characterized in that: It includes a frame (1), a winding roller (2), a deviation rectifying assembly (3), an unwinding roller (4), a thickness detection assembly (5) and a controller. The frame (1) is rotationally connected to the winding roller (2), and a winding motor (21) for driving the rotation of the winding roller (2) is drivingly connected to the rotating shaft of the winding roller (2). The deviation rectifying assembly (3) includes a deviation rectifying frame (31), a deviation rectifying roller (32) and a driving device (33). A slide rail (11) is provided on the frame (1) along the axial direction of the winding roller (2). The deviation rectifying frame (31) is arranged on the slide rail (11). The driving device (33) is drivingly connected to the deviation rectifying frame (31) and can drive the deviation rectifying frame (31) to move along the slide rail (11). The unwinding roller (4) and the deviation rectifying roller (32) are both rotationally connected to the deviation rectifying frame (31), and an unwinding motor (41) for driving the rotation of the unwinding roller (4) is drivingly connected to the rotating shaft of the unwinding roller (4). The thickness detection assembly (5) includes a winding roller detection piece (51) and an unwinding roller detection piece (52). The winding roller detection piece (51) can abut against the strip material wound on the winding roller (2) and detect the thickness of the strip material, and the winding roller detection piece (51) is electrically connected to the controller and can feedback the detection result to the controller. The unwinding roller detection piece (52) can abut against the strip material wound on the unwinding roller (4) and detect the thickness of the strip material, and the unwinding roller detection piece (52) is electrically connected to the controller and can feedback the detection result to the controller. The winding motor (21) and the unwinding motor (41) are both electrically connected to the controller, and the controller can control the rotation speed of the winding motor (21) according to the detection result of the winding roller detection piece (51) and control the rotation speed of the unwinding motor (41) according to the detection result of the unwinding roller detection piece (52).

2. The rewinding device for an electromagnetic interference resistant film according to claim 1, characterized in that: The winding roller detection piece (51) includes a winding roller abutting frame (511), a winding roller abutting roller (512) and a winding roller driving cylinder (513). The bottom of the winding roller abutting frame (511) is hinged to the frame (1). The winding roller abutting roller (512) is rotationally connected to the top of the winding roller abutting frame (511), and the winding roller abutting roller (512) can rotate around the hinge axis of the winding roller abutting frame (511) in a direction close to or away from the winding roller (2). The cylinder body of the winding roller driving cylinder (513) is hinged to the frame (1), and the piston rod of the winding roller driving cylinder (513) is hinged to the winding roller abutting frame (511). The piston rod can extend and drive the winding roller abutting frame (511) to drive the winding roller abutting roller (512) to abut against the strip material on the winding roller (2). A displacement sensor is provided on the winding roller driving cylinder (513), and the displacement sensor is electrically connected to the controller and can detect the elongation of the piston rod of the winding roller driving cylinder (513). The unwinding roll detection member (52) includes an unwinding roll abutting frame (521), an unwinding roll abutting roller (522), and an unwinding roll driving cylinder (523). The bottom of the unwinding roll abutting frame (521) is hinged to the machine frame (1). The unwinding roll abutting roller (522) is rotatably connected to the top of the unwinding roll abutting frame (521), and the unwinding roll abutting roller (522) can rotate around the hinge of the unwinding roll abutting frame (521) in a direction approaching or departing from the unwinding roll (4). The cylinder body of the unwinding roll driving cylinder (523) is hinged to the machine frame (1), and the piston rod of the unwinding roll driving cylinder (523) is hinged to the unwinding roll abutting frame (521). The piston rod can extend and drive the unwinding roll abutting frame (521) to drive the unwinding roll abutting roller (522) to abut against the strip material on the unwinding roll (4). A displacement sensor is provided on the unwinding roll driving cylinder (523), and the displacement sensor is electrically connected to the controller and can detect the extension amount of the piston rod of the unwinding roll driving cylinder (523).

3. A rewinding device for an electromagnetic interference resistant film according to claim 1, characterized in that: The deviation rectifying assembly (3) further includes a pressing roller (34). The pressing roller (34) is rotatably connected to the deviation rectifying frame (31), and a deviation rectifying channel is formed between the pressing roller (34) and the deviation rectifying roller (32). The strip material on the unwinding roll (4) can pass through the deviation rectifying channel to be connected to the winding roll (2) and be abutted between the roller surfaces of the deviation rectifying roller (32) and the pressing roller (34).

4. A rewinding device for an electromagnetic interference resistant film according to claim 3, characterized in that: The deviation rectifying assembly (3) further includes a deviation rectifying sensor (35). The deviation rectifying sensor (35) is provided on the machine frame (1) and can detect whether the flexible film strip material between the unwinding roll (4) and the winding roll (2) is offset along the length direction of the slide rail (11). The deviation rectifying sensor (35) is connected to the controller and can feedback the offset result to the controller. The controller is electrically connected to the driving device (33) and can control the driving device (33) to drive the deviation rectifying frame (31) to move.

5. The rewinding device for an electromagnetic interference resistant film according to claim 3, characterized in that: It further includes a plurality of tension rollers (6). The tension rollers (6) are provided between the unwinding roll (4) and the deviation rectifying channel, and the tension rollers (6) are rotatably connected to the deviation rectifying frame (31). The tension rollers (6) are also provided between the winding roll (2) and the deviation rectifying channel, and the tension rollers (6) are rotatably connected to the machine frame (1).

6. The rewinding device for an electromagnetic interference resistant film according to claim 5, characterized in that: Friction increasing grooves (61) are formed on each of the tension rollers (6).

7. A rewinding device for an electromagnetic interference resistant film according to claim 5, characterized in that: It further includes a length measuring roller (7) and a length measuring instrument (8). The length measuring roller (7) is rotatably connected to the machine frame (1), and a length measuring channel is formed between the length measuring roller (7) and the adjacent tension roller (6). The strip material can pass through the length measuring channel and drive the length measuring roller (7) to rotate. The detection head of the length measuring instrument (8) abuts against the length measuring roller (7).

8. A rewinding device for an electromagnetic interference resistant film according to claim 5, characterized in that: A backlight plate (9) is further provided on the machine frame (1). The backlight plate (9) is provided between the winding roll (2) and the deviation rectifying channel, and the strip material can pass above the plate surface of the backlight plate (9).

Images