Thin film roll dividing device

Abstract

The utility model relates to the technical field of thin film processing, and discloses a thin film shunt winding device which comprises a workbench, an unwinding seat and a winding seat are arranged on the workbench, the unwinding seat is used for erecting a large-roll thin film roller, and a roller switching mechanism is arranged on the winding seat. The roller switching mechanism comprises a rotating disc, a plurality of stations, a rotating motor and a driving part, wherein the rotating disc is rotationally arranged on the winding base in the direction parallel to the axial direction of the large-roll film roller, the stations are distributed in the circumferential direction of the rotating disc and used for containing the small-roll film rollers, the rotating motor drives the rotating disc to rotate, and the driving part drives the small-roll film rollers to conduct winding. A cutting mechanism used for cutting the thin film, a thin film traction mechanism used for pulling the thin film and an initial rolling mechanism used for fixing the free end of the pulled thin film to the new small roll thin film roller and conducting initial rolling are further arranged on the portion, between the unwinding base and the rolling base, of the workbench. The winding device has the effect of improving the film winding working efficiency.

Description

Technical Field

[0001] This application relates to the technical field of film processing, and particularly to a film unrolling device. Background Art

[0002] In the film substrate and flexible packaging color printing industries, unrolling is an important process, the purpose of which is to divide large-diameter materials into multiple rolls and small-diameter materials according to the requirements of winding length and width specifications.

[0003] Chinese Patent with Publication No. CN219279064U discloses a film unrolling device, which includes a workbench and the film to be unrolled. On the top of the workbench, a large-roll film assembly, a traction guiding assembly, and a winding assembly are sequentially arranged from left to right. It also includes an adjusting assembly arranged on the top of the workbench for adjusting the tightness of the film and a cutting assembly for cutting the film. The adjusting assembly is arranged between the large-roll film assembly and the traction guiding assembly, and the cutting assembly is arranged between the traction guiding assembly and the winding assembly.

[0004] The above film unrolling device requires manual unloading of the wound roller and then reinstalling a new roller for film winding. This method has relatively low efficiency and consumes a large amount of manpower and time. Utility Model Content

[0005] In order to improve the working efficiency of film unrolling, this application provides a film unrolling device.

[0006] A film unrolling device provided by this application adopts the following technical solution:

[0007] A film unrolling device includes a workbench, on which a film unwinding seat and a winding seat are arranged. The film unwinding seat is used to mount and place a large-roll film roller, and a roller switching mechanism is arranged on the winding seat. The roller switching mechanism includes a turntable rotatably arranged on the winding seat along the axial direction of the large-roll film roller, several stations for placing small-roll film rollers distributed along the circumferential direction of the turntable, a rotation motor for driving the turntable to rotate, and a driving member for driving the small-roll film roller to wind. A cutting mechanism for cutting the film, a film traction mechanism for traction the film, and an initial winding mechanism for fixing the free end of the tractioned film on a new small-roll film roller and performing initial winding are also arranged on the workbench between the film unwinding seat and the winding seat.

[0008] By adopting the above technical solution, a large roll of film is placed on the unwinding seat and provides film to the entire system. When a small roll of film is wound, the rotating motor drives the turntable to rotate and rotate the new empty roll to the working position. Subsequently, the cutting mechanism cuts off the current film, the film traction mechanism pulls the film to the new station, and the initial winding mechanism completes the initial winding of the new roll. By integrating the unwinding, automatic switching of winding rolls, cutting, traction and initial winding mechanisms on the workbench, a fully automatic film splitting system is constructed, which significantly improves the efficiency of splitting and reduces labor costs and time consumption.

[0009] Optionally, a positioning sensor is arranged between the turntable and the winding seat, and the positioning sensor includes a positioning transmitter arranged on the turntable corresponding to each workstation and a positioning receiver arranged on the winding seat for receiving the positioning transmitter signal. There is a one-to-one correspondence between the positioning transmitter and the positioning receiver, and the rotating motor is electrically connected to the positioning sensor.

[0010] By adopting the above technical solution, when the workstation needs to be switched, the rotating motor starts and drives the turntable to rotate. When the new workstation rotates to the working position, the positioning receiver will receive the signal sent by the corresponding positioning transmitter. At this time, the rotating motor stops rotating, ensuring that the new workstation stops accurately at the predetermined position, thereby improving the accuracy and working stability of the entire device.

[0011] Optionally, the workstation is located on the side of the turntable away from the winding seat, and a driving shaft parallel to the axial direction of the turntable is rotatably arranged corresponding to each workstation on the turntable, a positioning key is arranged on the inner side wall of the small film roller along its own axial direction, and a key slot is arranged on each driving shaft along its own axial direction, and the positioning key is plugged into the key slot.

[0012] By adopting the above technical solution, the positioning key and the key slot are plugged in and matched, which improves the convenience of replacing and installing a new small film roller, and improves the stability of the small film roller installed on the turntable.

[0013] Optionally, the cutting mechanism includes a bracket arranged on a workbench, an electric cylinder arranged vertically on the bracket, and a cutter arranged at the bottom end of the piston rod of the electric cylinder. A support plate for supporting the film during the sawing process is also arranged on the bracket below the cutter, and a sawing groove is provided on the support plate corresponding to the sawing direction of the cutter.

[0014] By adopting the above technical solution, the automatic cutting operation is simultaneously performed when the film is pulled to the small film roll roller of the next workstation, thereby improving the degree of automation and processing efficiency.

[0015] Optionally, a limiting sliding groove is formed on the workbench along its own length direction on the side away from the bracket where the cutting knife is located. The film traction mechanism includes a traction frame slidably arranged in the limiting sliding groove, a clamp arranged on one side of the traction frame facing the film conveying direction, and a sliding component for driving the traction frame to slide.

[0016] By adopting the above technical solution, by using the cooperation of the traction frame slidably arranged on the workbench and the clamp, the film can be peeled off from the unwinding roller. At the same time, the sliding component is used to drive the traction frame to slide along the sliding groove, so as to drive the clamp to traction the film to a new winding position, improve the transfer accuracy, reduce the possibility of the film shifting during the transfer process, and improve the product quality.

[0017] Optionally, the sliding component includes a screw rod rotatably arranged in the limiting sliding groove along the length direction of the limiting sliding groove, and a driving motor for driving the screw rod to rotate. The traction frame is limited in the limiting sliding groove and is sleeved on the screw rod through a threaded rotating sleeve.

[0018] By adopting the above technical solution, when the driving motor is started, the output shaft of the driving motor rotates to drive the screw rod to rotate synchronously. Under the limitation of the limiting sliding groove, the traction frame drives the clamp to traction the film to a new winding position, improving the accuracy of transferring the free end of the film.

[0019] Optionally, the initial winding mechanism includes a multi-stage electric push cylinder arranged vertically on the side of the turntable facing the cutting knife and a tape machine arranged at the top of the telescopic rod of the multi-stage electric push cylinder. When the clamp tractions the free end of the film to be close to the new small roll film roller, the piston rod of the multi-stage electric push cylinder extends, and the tape on the tape machine is jointly attached to the new small roll film roller and the free end of the film.

[0020] By adopting the above technical solution, the free end of the film can be automatically and quickly bonded to the outer peripheral wall of the new winding film roller, which not only improves the bonding stability between the film and the wall of the small roll film roller, but also effectively reduces the possibility of the film shifting during the winding process, and effectively improves the smoothness effect during the winding process of the slitting device.

[0021] Optionally, a plurality of tension wheels are arranged between the unwinding seat and the cutting knife along the film conveying direction, and the film is wound around the plurality of tension wheels in a staggered manner.

[0022] By adopting the above technical solution, the film maintains a moderate tension during the traction and cutting processes, which not only effectively improves the cutting accuracy, but also is beneficial to the neatness of the film wound on the small roll film roller, effectively reducing the product defective rate, and further improving the processing quality of the film slitting.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The large roll film roller is placed on the unwinding seat and supplies film to the entire system. When a small roll film roller finishes winding, the rotating motor drives the turntable to rotate, turning the new empty roller to the working position. Subsequently, the cutting mechanism cuts the current film, the film traction mechanism tractions the film to the new station, and the initial winding mechanism completes the initial winding of the new roller. By integrating mechanisms such as unwinding, automatic switching of winding rollers, cutting, traction, and initial winding on the workbench, a fully automatic film splitting system is constructed, significantly improving the splitting efficiency and reducing labor costs and time consumption;

[0025] 2. When it is necessary to switch stations, the rotating motor starts and drives the turntable to rotate. When the new station rotates to the working position, the positioning receiver receives the signal emitted by the corresponding positioning transmitter. At this time, the rotating motor stops rotating, ensuring that the new station accurately stops at the predetermined position, thereby improving the accuracy and working stability of the entire device;

[0026] 3. By using the positioning key and keyway to be inserted and matched, the convenience of replacing and installing a new cylinder for the small roll film roller is improved, and the stable effect of installing the small roll film roller on the turntable is also improved. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0028] Figure 2 is the schematic diagram showing the connection relationship between the turntable and the winding seat in the embodiment of the present application.

[0029] Figure 3 is Figure 2 the enlarged view of part A in

[0030] Figure 4 is the schematic diagram showing the connection relationship between the traction frame and the workbench in the embodiment of the present application.

[0031] Description of the Reference Numerals:

[0032] 01. Large roll film roller; 02. Small roll film roller; 021. Positioning key; 1. Workbench; 11. Limit chute; 2. Unwinding seat; 3. Rewinding seat; 4. Roller switching mechanism; 41. Turntable; 411. Driving shaft; 4111. Keyway; 42. Workstation; 43. Rotating motor; 44. Driving part; 441. Synchronous pulley; 442. Synchronous belt; 443. Driven pulley; 444. Driving pulley; 445. Synchronous motor; 5. Cutting mechanism; 51. Bracket; 511. Support plate; 5111. Sawing through slot; 52. Electric cylinder; 53. Cutter; 6. Film traction mechanism; 61. Traction frame; 611. Vertical slot; 612. Bi-directional lead screw; 613. Servo motor; 62. Fixture; 63. Sliding component; 631. Screw; 632. Driving motor; 7. Initial rewinding mechanism; 71. Multi-stage electric push cylinder; 72. Adhesive tape machine; 8. Positioning sensor; 81. Positioning transmitter; 82. Positioning receiver; 9. Tension pulley; 91. Electric push rod. Detailed implementation mode

[0033] The following is further detailed description of this application in combination with the attached Figures 1-4 drawings.

[0034] The embodiment of this application discloses a film splitting device.

[0035] Referring to Figure 1 , a film splitting device includes a workbench 1, on which an unwinding seat 2 and a rewinding seat 3 are fixedly arranged. The unwinding seat 2 is used for mounting a rotatably arranged large roll film roller 01, and the rewinding seat 3 is used for mounting a plurality of rotatably arranged small roll film rollers 02. And a roller switching mechanism 4 for switching the small roll film roller 02 is arranged on the rewinding seat 3. A cutting mechanism 5, a film traction mechanism 6 and an initial rewinding mechanism 7 are also arranged on the workbench 1 between the unwinding seat 2 and the rewinding seat 3.

[0036] Referring to Figure 1 , the large roll film roller 01 is installed and placed on the unwinding seat 2 to provide film for the whole system. When a small roll film roller 02 finishes rewinding, the roller switching mechanism 4 will switch the empty roller of the new small roll film roller 02 to the working position. Subsequently, the cutting mechanism 5 cuts the current film, the film traction mechanism 6 pulls the film to the empty roller, and the initial rewinding mechanism 7 completes the initial rewinding of the new roller, and then the rewinding work of the roller is carried out.

[0037] Referring to Figure 1 , Figure 2 and Figure 3, the roller switching mechanism 4 includes a turntable 41, a working station 42, a rotating motor 43 and a driving member 44. The turntable 41 is rotatably arranged on the winding base 3 through a rotating shaft parallel to the axial direction of the large roll film roller 01. The rotating motor 43 is fixedly arranged on the side wall of the winding base 3 facing away from the turntable 41, and the output shaft of the rotating motor 43 rotatably penetrates the turntable 41 and is fixedly connected to the rotating shaft of the turntable 41.

[0038] Refer to Figure 2 , the working station 42 is located on the side of the turntable 41 facing away from the winding base 3, and in this embodiment, there are three distributed along the circumferential direction of the turntable 41. A driving shaft 411 is rotatably arranged on the turntable 41 corresponding to each working station 42, and the driving shaft 411 is arranged parallel to the axial direction of the turntable 41. A positioning key 021 is fixedly arranged along the axial direction of the inner side wall of the small roll film roller 02, and a key groove 4111 inserted and matched with the positioning key 021 is arranged along the axial direction of each driving shaft 411.

[0039] Refer to Figure 2 and Figure 3 , the driving member 44 in this embodiment includes a synchronous pulley 441, a synchronous belt 442, a driven pulley 443, a driving pulley 444 and a synchronous motor 445. The synchronous pulley 441 is fixedly sleeved on the end of each driving shaft 411 close to the winding base 3. The synchronous belt 442 is wound around a number of synchronous pulleys 441 together. The driven pulley 443 is fixedly sleeved on one of the driving shafts 411, and the driven pulley 443 is located between the synchronous pulley 441 on this driving shaft 411 and the winding base 3. The synchronous motor 445 is fixedly arranged on the side wall of the winding base 3, the driving pulley 444 is meshed with the driven pulley 443, and is fixedly sleeved on the output shaft of the synchronous motor 445.

[0040] Refer to Figure 2 , in order to improve the positioning accuracy of the working station 42 after the turntable 41 rotates, a positioning sensor 8 is arranged between the turntable 41 and the winding base 3. The positioning sensor 8 includes a positioning transmitter 81 and a positioning receiver 82. One positioning transmitter 81 is installed on the side wall of the turntable 41 corresponding to each working station 42 facing the winding base 3, and the positioning receiver 82 is fixedly arranged on the side wall of the winding base 3 facing the turntable 41. The position of the positioning receiver 82 is designed according to the established position of the film winding. The positioning transmitter 81 and the positioning receiver 82 correspond to each other one by one, and the rotating motor 43 and the synchronous motor 445 are both electrically connected to the positioning sensor 8.

[0041] Refer to Figure 1 and Figure 4, the cutting mechanism 5 includes a bracket 51, an electric cylinder 52 and a cutter 53. The bracket 51 is fixedly arranged on the workbench 1. The electric cylinder 52 is installed on the bracket 51 and arranged vertically downward. The cutter 53 is installed at the bottom end of the piston rod of the electric cylinder 52 for cutting the film during the film unrolling process. And to ensure the stability and accuracy of cutting, a support plate 511 is fixedly arranged on the bracket 51 below the cutter 53. A sawing through groove 5111 is opened on the support plate 511 along the sawing direction of the cutter 53 to allow the cutter 53 to pass through during the cutting process.

[0042] Referring to Figure 1 and Figure 4 , the film traction mechanism 6 includes a traction frame 61, a fixture 62 and a sliding component 63 for driving the traction frame 61 to slide. A limit sliding groove 11 is opened on the workbench 1 along the film conveying direction on the side of the film facing away from the bracket 51 during conveying. The traction frame 61 is slidably arranged in the limit sliding groove 11 along the length direction of the limit sliding groove 11.

[0043] Referring to Figure 4 , a vertical groove 611 is opened on one side of the traction frame 61 facing the film conveying direction. A bidirectional lead screw 612 is rotatably arranged vertically in the vertical groove 611. In this embodiment, the fixture 62 is two clamping plates slidably arranged in the vertical groove 611. The two clamping plates are horizontally arranged and distributed vertically. The film is clamped between the two clamping plates. Each clamping plate is rotationally sleeved on the corresponding thread section of the bidirectional lead screw 612 through a thread. A servo motor 613 is fixedly arranged on the top wall of the traction frame 61. The output shaft of the servo motor 613 rotatably penetrates the top wall of the traction frame 61 and extends into the vertical groove 611 to be coaxially and fixedly connected with the bidirectional lead screw 612.

[0044] Referring to Figure 4 , the sliding component 63 includes a screw 631 and a driving motor 632. The screw 631 is rotatably arranged in the limit sliding groove 11 along the length direction of the limit sliding groove 11. The traction frame 61 is limited in the limit sliding groove 11 and is rotationally sleeved on the screw 631 through a thread. The driving motor 632 is fixedly arranged in the installation groove on the workbench 1, and its output shaft rotatably penetrates the side wall of the workbench 1 and extends into the limit sliding groove 11 to be coaxially and fixedly connected with the screw 631.

[0045] Referring to Figure 1The initial winding mechanism 7 includes a multi-stage electric push cylinder 71 and a tape machine 72. The multi-stage electric push cylinder 71 is fixedly arranged in the mounting groove on the workbench 1 along the vertical direction and is located on the side of the turntable 41 facing the cutter 53. The tape machine 72 is installed at the top of its piston rod. When the clamp 62 guides the free end of the film to the vicinity of the small film roll 02 on the new station 42, the piston rod of the multi-stage electric push cylinder 71 extends, so that the tape on the tape machine 72 is attached to the small film roll 02 and the free end of the film at the same time, completing the initial winding action.

[0046] Reference Figure 1 and Figure 4 In order to keep the film at a moderate tension during the pulling and cutting process, multiple tension wheels 9 are arranged between the unwinding seat 2 and the cutter 53 along the conveying direction of the film. Two tension wheels are used as an example in this embodiment, wherein an electric push rod 91 is arranged between the bottom of the support of the tension wheel 9 near the unwinding seat 2 and the workbench 1. The electric push rod 91 is arranged vertically, and the cylinder of the electric push rod 91 is fixedly arranged on the workbench 1, and the top of the telescopic rod of the electric push rod 91 is fixedly arranged on the bottom wall of the support. The film is staggered around multiple tension wheels 9 during the conveying process, and the arrangement of the electric push rod 91 facilitates the tension wheel 9 to adjust the tension of the film during the conveying process as needed.

[0047] The implementation principle of the film splitting device of the embodiment of the present application is as follows: First, the large film roll 01 is mounted on the unwinding seat 2 to start the unwinding operation. The film is pulled by the traction mechanism through the clamp 62 and is transported to the cutting mechanism 5 and the winding mechanism along the tensioning wheel 9. In this process, the tensioning wheel 9 ensures that the film maintains a moderate tension;

[0048] When the film is delivered to a preset length or reaches other switching conditions, the electric cylinder 52 of the cutting mechanism 5 drives the cutter 53 to move downward to cut the film. At the same time, the rotating motor 43 receives the signal from the positioning sensor 8, drives the turntable 41 to rotate, and accurately rotates the next empty station 42 to the winding position;

[0049] After the new workstation 42 reaches the winding position, the film traction mechanism 6 drives the screw to rotate through the drive motor 632, driving the traction frame 61 and the clamp 62 to pull the cut free end of the film to the new small film roll 02. At this time, the multi-stage electric push cylinder 71 of the initial winding mechanism 7 extends the piston rod, pushing the tape machine 72 to stick the tape on the free end of the film and the small film roll 02, completing the initial winding;

[0050] Subsequently, the synchronous motor 445 is started, and through the transmission of the driving wheel 444, the synchronous belt 442 and the synchronous wheel 441, the small roll film roller 02 on the new station 42 is driven to start the winding operation.

[0051] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A film roll separation device, characterized in that: The invention comprises a workbench (1), wherein the workbench (1) is provided with a reeling seat (2) and a reeling seat (3), wherein the reeling seat (2) is used to set up and place a large film roll (01), and the reeling seat (3) is provided with a roller switching mechanism (4), wherein the roller switching mechanism (4) comprises a turntable (41) arranged on the reeling seat (3) and rotatable in a direction parallel to the axis of the large film roll (01), and a plurality of rollers (41) distributed along the circumference of the turntable (41) and used to place small film rolls (02). A work station (42), a rotating motor (43) for driving the turntable (41) to rotate, and a driving member (44) for driving the small film roll (02) to be rolled up. The workbench (1) is also provided with a cutting mechanism (5) for cutting the film, a film pulling mechanism (6) for pulling the film, and an initial winding mechanism (7) for fixing the free end of the pulled film on the new small film roll (02) and performing initial winding, between the unwinding seat (2) and the winding seat (3).

2. A film roll-splitting device according to claim 1, characterized in that: A positioning sensor (8) is arranged between the turntable (41) and the winding seat (3), and the positioning sensor (8) comprises a positioning transmitter (81) arranged on the turntable (41) corresponding to each workstation (42) and a positioning receiver (82) arranged on the winding seat (3) for receiving a signal from the positioning transmitter (81), the positioning transmitter (81) and the positioning receiver (82) corresponding one to one, and the rotating motor (43) is electrically connected to the positioning sensor (8).

3. A film roll-splitting device according to claim 2, characterized in that: The workstation (42) is located on the side of the turntable (41) away from the winding seat (3), and a driving shaft (411) parallel to the axial direction of the turntable (41) is rotatably arranged corresponding to each workstation (42) on the turntable (41), and a positioning key (021) is arranged on the inner side wall of the small film roll roller (02) along its own axial direction, and a keyway (4111) is arranged on each driving shaft (411) along its own axial direction, and the positioning key (021) is plugged into and matched with the keyway (4111).

4. A film roll-splitting device according to claim 1, characterized in that: The cutting mechanism (5) comprises a support (51) arranged on a workbench (1), an electric cylinder (52) arranged vertically on the support (51), and a cutter (53) arranged at the bottom end of a piston rod of the electric cylinder (52); a support plate (511) for supporting a film during sawing is also arranged on the support (51) below the cutter (53); and a sawing through groove (5111) is provided on the support plate (511) corresponding to the sawing direction of the cutter (53).

5. A film roll-splitting device according to claim 4, characterized in that: The workbench (1) is provided with a limit slide groove (11) along its length direction on a side of the cutter (53) away from the bracket (51), and the film traction mechanism (6) comprises a traction frame (61) slidably arranged in the limit slide groove (11), a clamp (62) arranged on the side of the traction frame (61) facing the film conveying direction, and a sliding component (63) driving the traction frame (61) to slide.

6. A film roll-splitting device according to claim 5, characterized in that: The sliding assembly (63) comprises a screw rod (631) rotatably arranged in the limiting sliding groove (11) along the length direction of the limiting sliding groove (11) and a driving motor (632) driving the screw rod (631) to rotate; the traction frame (61) is limited in the limiting sliding groove (11) and is rotatably sleeved on the screw rod (631) through a thread.

7. A film roll-splitting device according to claim 6, characterized in that: The initial winding mechanism (7) comprises a multi-stage electric push cylinder (71) vertically arranged on the side of the turntable (41) facing the cutter (53) and a tape machine (72) arranged at the top of the telescopic rod on the multi-stage electric push cylinder (71). When the clamp (62) pulls the free end of the film to the vicinity of the new small roll film roller (02), the piston rod of the multi-stage electric push cylinder (71) extends and adheres the tape on the tape machine (72) to the new small roll film roller (02) and the free end of the film.

8. The film roll-splitting device according to claim 4, characterized in that: A plurality of tensioning wheels (9) are arranged between the unwinding seat (2) and the cutter (53) along the conveying direction of the film, and the film is wound around the plurality of tensioning wheels (9) in an alternating manner.

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