Film cutting method of a sheet laminating device with a rotatable cutting tool

Abstract

A film cutting method for a sheet film laminating device with a rotatable cutter. The laminating device includes a transmission part, a film laminating part, and a cutting part. The transmission part is horizontally arranged, and the film laminating part and the cutting part are arranged front and back above the transmission part. The sheet can be moved to the position of the film laminating part by the drive of the transmission part to complete the surface film laminating work. The sheet with the film laminated continues to move to the position of the cutting part to complete the numerically controlled fixed-length film cutting work. The transmission part controls the power device through the numerical control and servo control unit to control the transportation speed and start and stop. The cutting part includes a cutter assembly that is slidably arranged perpendicular to the transportation direction of the transportation line. A connecting shaft is rotatably provided at the lower end of the cutter assembly, and a freely rotatable cutting knife is vertically provided at the lower end of the connecting shaft. The cutting knife rotates around the vertical direction with the connecting shaft, and the cutting of the film at the end or side of the sheet is completed by changing the relationship between the plane where it is located and the transportation direction of the sheet. At the same time, the cutting knife elastically presses against the surface of the sheet, ensuring that the sheet is not damaged while making the cutting of the film more complete.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet laminating devices, and specifically to a film cutting method for a sheet laminating device with a rotatable cutting knife. Background Art

[0002] In the surface protection process of sheets, especially in the surface protection process of glass or smooth metal and wooden sheets, the surface film of the sheet not only has a low cost, but also can play a good role in dust prevention and anti-oxidation. At the same time, the laminated sheet can be easily peeled off as needed during use without damaging the surface of the sheet.

[0003] In current laminating devices, the vast majority of cutting knives are directly arranged to slide perpendicular to the sheet transportation direction. This results in that during the cutting work, the cutting knife can only cut along a fixed direction, that is, the cutting knife can only perform the cutting work on the film at the end of the sheet. This requires that when laminating the sheet, the width of the sheet must be the same as that of the film, and when applying the film, both sides of the sheet must be flush with both sides of the film. This working method requires replacing the film roll when the sheet width is different, and a large amount of calibration work is required to ensure that both sides of the sheet are flush with both sides of the film, which is extremely time-consuming.

[0004] At the same time, during the cutting work, the cutting knife is in rigid contact with the sheet surface. When the pressure of the cutting knife is large, it is extremely easy to damage the sheet surface, and when the pressure of the cutting knife is small, the film cutting work cannot be fully and effectively completed, resulting in a large amount of debugging work. When the sheet thickness is different, this debugging work needs to be carried out again, which also greatly affects the laminating efficiency of the laminating device. Summary of the Invention

[0005] To solve the problems of the existing laminating device during the film cutting work, that is, it can only cut the film at the end of the sheet along a fixed direction, resulting in the need for a specific width film during laminating and a large amount of debugging work, making it more troublesome to use. At the same time, the cutting knife is in rigid contact with the sheet, which is easy to damage the cutting tool or the sheet surface. The present invention provides a film cutting method for a sheet laminating device with a rotatable cutting knife.

[0006] The technical solution of the present invention is as follows:

[0007] A sheet laminating device with a rotatable cutting knife includes a transmission part, a laminating part, and a cutting part. The transmission part is horizontally arranged and includes a horizontally arranged transportation line. The sheet to be laminated can move under the drive of the transportation line. Among them, when the sheet reaches the laminating part position under the drive of the transportation line, the laminating part completes the laminating work on the surface of the sheet. The cutting part is located behind the laminating part, and the laminated sheet is completed with the cutting work of the redundant film by the cutting part. The sheet continuously runs on the transportation line, realizing continuous lamination of the sheet and improving the laminating efficiency.

[0008] Further, the transmission part further includes a first power device and a control unit. The transport line is in transmission connection with the first power device, and the first power device is in communication connection with the control unit. The control unit can control the start, stop and transport speed of the transport line by controlling the first power device, and cooperate with the film covering part and the cutting part to jointly complete the film covering and cutting work of the board.

[0009] For the board film covering device with a rotatable cutting knife as described above, the transmission part includes a transport line, and the film covering part and the cutting part work above the transport line. Of course, the film covering part and the cutting part can also be arranged below the transport line. When the film covering part and the cutting part are arranged both above and below the transport line, the film covering part and the cutting part are symmetrically arranged relative to the transport line, and the film covering of both sides of the board and the cutting of the redundant film are completed simultaneously.

[0010] Further, the film covering part includes a film threading shaft, a plurality of auxiliary shafts and a pressing shaft. The film threading shaft is located at the upper end of the film covering part, and the film coil can be installed on the film threading shaft. One end of the coil can pass through a plurality of auxiliary shafts and be stretched to the lower end of the pressing shaft. When the board is transported to the position of the pressing shaft, its upper surface contacts the lower end of the pressing shaft, and the film is attached to the surface of the board through the pressing action.

[0011] For the board film covering device with a rotatable cutting knife as described above, the cutting part includes a main frame arranged perpendicular to the transport direction of the transport line. A cutting knife assembly is slidably arranged on the main frame along the arrangement direction of the main frame. The cutting knife assembly is slidably connected to the main frame through a connecting plate. The cutting knife assembly further includes an adjustment module and a cutting module. The cutting module is vertically slidably arranged on one side of the connecting plate through the adjustment module, so that people can freely adjust and set the height of the cutting module according to the thickness of the board, increasing the applicable range of the device. At the same time, when the device completes the film cutting of the current board, the cutting module can move up and wait for the next board to reach below the cutting module to complete the film cutting work of the next board, so that the setting of the cutting module will not affect the displacement of the board.

[0012] Specifically, a power unit is arranged on the main frame, and a slide rail is further arranged on one side of the main frame. The side of the connecting plate away from the cutting module is slidably connected to the slide rail through a chute. The connecting plate is connected to the power unit and can slide along the slide rail driven by the power unit to complete the film cutting work at the end of the board.

[0013] A film laminating device for a sheet with a rotatable cutter as described above. The cutting module includes a connecting frame, a connecting shaft, a cutting knife, and a second power device. The cutting module is connected to the adjusting module through the connecting frame and can be vertically lifted and lowered under the drive of the adjusting module. The lower end of the connecting frame is vertically rotatably provided with a connecting shaft, and the axis of rotation of the connecting shaft is vertical. The lower end of the connecting shaft is vertically provided with a freely rotatable cutting knife, so that when the cutting part moves along the main frame, the film can be cut during both the forward and return trips without the need to set a return waiting time. At the same time, the non-powered setting method makes the rotation speed of the cutting knife determined by the sliding speed of the cutter assembly along the main frame, ensuring that there is no relative sliding between the cutting knife and the sheet, thereby protecting the sheet from being damaged by the cutting knife. At the same time, the connecting shaft can drive the cutting knife to rotate around the axis of the connecting shaft under the action of the second power device, so that there are at least two states in the plane of the cutting knife, one perpendicular to the sheet transportation direction and the other parallel to the sheet transportation direction. When the cutting knife is perpendicular to the sheet transportation direction, the cutter assembly slides along the main frame, and the cutting knife completes the cutting of the film at the end of the sheet. When the cutting knife is parallel to the sheet transportation direction, the sheet moves along the transportation line, and the cutting knife completes the cutting of the film on one side of the sheet. Such a design method makes it unnecessary to align the films on both sides of the sheet during the film pasting work. At the same time, when the width of the sheet changes, it is possible to cut the film according to the need without replacing the film, greatly increasing the working efficiency of film covering.

[0014] Further, the connecting frame includes a hollow shell-like structure, and an inner ring in the middle thereof extends inward to form a connecting port. The connecting shaft extends into the interior of the connecting frame from the lower end of the connecting frame and is rotatably connected to the connecting port. The transmission end of the second power device extends into the interior of the connecting frame from the upper end of the connecting frame and is connected to the upper end of the connecting shaft through a connecting device. The second power device can drive the connecting shaft to rotate, thereby driving the cutting knife to rotate around the vertical axis.

[0015] Preferably, the hollow part in the upper part of the connecting frame is an upper chamber. The connecting device is located in the upper chamber. Its upper end is connected to the second power device through a first connecting shaft, and its lower end is connected to the connecting shaft through a second connecting shaft. And the first connecting shaft and the second connecting shaft are telescopically connected without relative rotation. While the second power device drives the connecting shaft to rotate, the connecting shaft can be vertically lifted and lowered in the connecting frame under the action of an external force, thereby driving the cutting knife to have an up and down displacement, so that the cutting knife is in non-rigid contact with the sheet. In this way, even when the surface of the sheet is uneven or there are obstacles at the cutting position, it can better protect the surface of the sheet and prevent the cutting knife or the sheet from being damaged.

[0016] As a further preference, the hollow part at the lower part of the connecting frame is a lower chamber, and an elastic element is further arranged in the lower chamber. The part of the connecting shaft located in the lower chamber is elastically connected with the connecting frame through the elastic element, and the elastic force received by the connecting shaft is vertically downward. This design enables the cutting knife to always abut against the surface of the plate, making the cutting of the film more sufficient. At the same time, the elastic element is combined with the design that the connecting shaft can be vertically lifted and lowered, enabling the device to adjust the pressing force of the cutting knife on the plate according to the material of the plate or the thickness of the film through the adjustment module, thereby increasing the use effect of the device.

[0017] Further, the elastic element includes a spring and a transfer member. The spring is arranged around the connecting shaft, with its lower end pressing downward against the connecting shaft and its upper end pressing upward against the outer ring at the lower end of the connecting port. A transfer member is provided at the end where the spring presses against the connecting shaft and / or presses against the connecting port, and it is rotationally connected to the connecting shaft and / or the outer ring at the lower end of the connecting port through the transfer member. The setting of the transfer member enables the cutting knife to still provide a good pressing force on the connecting shaft when it rotates with the connecting shaft.

[0018] For a plate film covering device with a rotatable cutting knife as described above, its film cutting method includes the following steps:

[0019] (1): Start the film covering machine, continuously place the plate on the transportation line, and the transportation line drives the plate to move to the film covering part to complete film covering;

[0020] (2): The plate after film covering continues to move along the transportation line until the head end is located below the cutting knife, and the transportation line stops running. At this time, the cutting knife is located on one side above the plate, and the plane where the cutting knife is located is perpendicular to the transportation direction of the plate;

[0021] (3): The cutting knife moves downward under the drive of the adjustment module until it abuts against the upper part of the plate, and then the cutter assembly slides along the main frame to the other side of the plate to complete the cutting work of the film at the head end of the plate;

[0022] (4): The cutting knife first moves upward under the drive of the adjustment module until it disengages from the upper part of the plate, and then rotates under the drive of the connecting shaft to a plane parallel to the transportation direction of the plate;

[0023] (5): The cutting knife moves downward under the drive of the adjustment module until it abuts against the upper part of the plate, and the transportation line drives the plate to continue moving until the tail end of the plate reaches below the cutting knife, and the transportation line stops running;

[0024] (6): The cutting knife first moves upward under the drive of the adjustment module until it disengages from the upper part of the plate, and then rotates under the drive of the connecting shaft to a plane perpendicular to the transportation direction of the plate;

[0025] (7): The cutting knife moves downward under the drive of the adjustment module until it abuts against the upper part of the plate, and the cutter assembly slides reversely along the main frame to complete the cutting work of the film at the tail end of the plate;

[0026] (8): The cutting knife first moves upward under the drive of the adjustment module until it disengages from the upper part of the board, and then the conveyor line continues to run until the leading end of the next board reaches below the cutting knife, at which point the conveyor line stops running.

[0027] (9): Repeat steps (3)-(8) to complete the continuous cutting of the board.

[0028] Preferably, when the board is covered with the film in step (1), one side of the film is flush with the board and does not need to be cut. At the same time, in step (2), the initial position of the cutting knife is above the side where the board and the film are flush. In this way, relative to the board, the cutting knife can complete the cutting of the end and one side of the board in an S shape, enabling the cutting work of the cutting knife to be completed continuously, and further ensuring the efficiency of covering the board with the film.

[0029] Furthermore, when the cutting knife abuts against the upper part of the board in steps (3), (5), and (7), it is in an elastic abutting state with the upper part of the board, and the pressing force of the cutting knife on the board can be adjusted through the adjustment of the adjustment module. In this way, even if the material of the board or the thickness of the film is different, the device can still better complete the film cutting work of the board, increasing the applicability of the device.

[0030] The beneficial effect of the present invention lies in: The present invention is a film cutting method for a board film covering device with a rotatable cutting knife. The cutting knife can rotate axially around the vertical direction along with the connecting shaft. When the plane where the cutting knife is located is perpendicular to the board transportation direction, the cutting of the film at the end of the board is completed by the cutting knife assembly sliding along the main frame. At the same time, when the plane where the cutting knife is located is parallel to the board transportation direction, the cutting of the film on the side of the board is completed by the movement of the board along the conveyor line. When covering the film, it is not necessary to replace the film roll of the same width according to the width of the board, and there is no need to align and adjust the film roll and the board, significantly improving the efficiency of covering the board with the film.

[0031] At the same time, the cutting knife can be lifted and lowered along the vertical direction under the drive of the connecting shaft and is pressed against the surface of the board under the action of the spring. In this way, even if the surface of the board is uneven or there are obstacles such as grit at the cutting position, the device can still better complete the film cutting work. At the same time, the pressure of the cutting knife on the board can also be adjusted through the adjustment module. In this way, even if the material of the board is different or the thickness of the film is different, the device can still better complete the cutting work. Description of the Drawings

[0032] By reading the detailed description of the preferred embodiments below, the solutions and advantages of the present application will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention.

[0033] In the drawings:

[0034] Figure 1 Schematic diagram of the lateral cutting state of the cutter assembly in the embodiment;

[0035] Figure 2 Schematic diagram of the longitudinal cutting state of the cutter assembly in the embodiment;

[0036] Figure 3 Schematic diagram of the structure of the cutter assembly in the embodiment;

[0037] Figure 4 Schematic diagram of the internal structure of the cutting module in the embodiment;

[0038] Figure 5 is Figure 4 an enlarged schematic diagram of part A in

[0039] Figure 6 Moving trajectory diagram of the cutting knife relative to the glass plate in the embodiment;

[0040] The components represented by the reference numerals in the figure are:

[0041] 1. Transmission part, 11. Conveyor line, 2. Cutting part, 21. Main frame, 22. Power motor, 23. Cutter assembly, 231. Connecting plate, 232. Adjustment module, 233. Cutting module, 2331. Connecting frame, 2332. Connecting shaft, 2333. Cutting knife, 2334. Rotating drive device, 2335. First coupling shaft, 2336. Second coupling shaft, 3. Glass plate. Detailed implementation manners

[0042] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. The present disclosure can be implemented in various forms and should not be limited by the embodiments described herein.

[0043] Embodiment

[0044] This embodiment provides a sheet laminating device with a rotatable cutting knife. Referring to Figure 1 、 Figure 2 , it includes a transmission part 1, a laminating part, and a cutting part 2. The transmission part 1 is horizontally arranged. In this embodiment, taking the glass plate 3 as an example, the glass plate 3 can successively move along the transmission part 1 to the position of the laminating part, and the upper surface of the glass plate 3 is laminated by the laminating part. The cutting part 2 works at the rear of the transmission part 1. The laminated glass plate 3 continues to move along the transmission part 1 to the position of the cutting part 2, and the redundant film on the glass plate 3 is cut by the cutting part 2. The glass plate 3 continuously runs on the conveyor line 11, realizing continuous lamination of the glass plate 3 and improving the lamination efficiency.

[0045] In this embodiment, the transmission part 1 includes a transport line 11. The film covering part and the cutting part 2 both work above the transport line 11. Of course, the film covering part and the cutting part 2 can also be arranged below the transport line 11. And when the film covering part and the cutting part 2 are arranged above and below the transport line 11 at the same time, the film covering parts and the cutting parts 2 above and below the transport line 11 are symmetrically arranged. In this embodiment, the number of the film covering part and the cutting part 2 is not specifically limited.

[0046] Furthermore, the transmission part 1 includes a main frame 21 which is horizontally arranged and is provided with a transport line 11 thereon. The transport line 11 includes a plurality of horizontally and parallelly arranged guide rollers. The transmission part 1 further includes a first power device and a control device. The first power device is in transmission connection with the guide rollers and is also in transmission connection with the control unit. The control unit controls the start-stop and running speed of the guide rollers by controlling the first power device, and further controls the start-stop and transport speed of the transport line 11. The glass plate 3 is located above the guide rollers and moves along with the guide rollers, and completes the film covering and redundant film cutting work under the action of the film covering part and the cutting part 2.

[0047] In this embodiment, the film covering part includes a film threading shaft, a plurality of auxiliary shafts and a pressing shaft. The film threading shaft, the plurality of auxiliary shafts and the pressing shaft are all arranged perpendicular to the transport direction of the glass plate 3. Among them, the film threading shaft is located at the uppermost end of the film covering part. The film coil can be installed on the film threading shaft, and one end of the coil can pass through the plurality of auxiliary shafts and be stretched to the lower end of the pressing shaft. When the glass plate 3 moves along the transport line 11 to the position of the pressing shaft, its upper surface contacts the lower end of the pressing shaft, and the film is attached to the surface of the plate through the pressing action.

[0048] In this embodiment, the cutting part 2 includes a main frame 21, a power unit and a cutter assembly 23. The main frame 21 is of a gantry frame structure and is horizontally arranged above the transport line 11, and the arrangement direction is perpendicular to the transport direction of the glass plate 3. The power unit and the cutter assembly 23 are provided thereon. The cutter assembly 23 is slidably connected with the main frame 21 and is in transmission connection with the power unit. The cutter assembly 23 can complete the cutting work of the redundant film at the end of the plate under the drive of the power unit.

[0049] In this embodiment, a slide rail is provided on one side of the main frame 21. The power unit includes a power motor 22 and a transmission belt. The cutter assembly 23 is provided with a chute and is slidably connected with the slide rail through the chute. The cutter assembly 23 is also connected with the transmission belt through a connecting piece. The power motor 22 drives the cutter assembly 23 to move along the slide rail by driving the transmission belt to move.

[0050] In this embodiment, in combination with Figure 3, the cutter assembly 23 includes a connecting plate 231, an adjusting module 232 and a cutting module 233. The connecting plate 231 is arranged vertically, with one side slidably connected to the slide rail and the other side provided with the adjusting module 232. The adjusting module 232 includes an adjusting column, a sliding column, an adjusting motor and an adjusting block. The adjusting column is vertically rotatably arranged on one side of the connecting plate 231, and a sliding column is vertically provided on the other side of the connecting plate 231. One end of the adjusting block is vertically slidably connected to the sliding column, and the other end is helically connected to the adjusting column. The body of the adjusting motor is connected to the connecting plate 231 and the driving end faces downward and is connected to the upper end of the adjusting column. A cutting module 233 is vertically provided on the side of the adjusting block away from the connecting plate 231. By rotating the adjusting motor, the adjusting block can be driven to vertically lift along the sliding column, and then drive the cutting module 233 to vertically lift, enabling people to adjust the height of the cutting module 233 according to the thickness of the plate, increasing the applicable range of the device. At the same time, when the device completes the film cutting of the current plate, the cutting module 233 can move upward and wait for the next plate to reach below the cutting module 233 to complete the film cutting work of the next plate, so that the setting of the cutting module 233 will not affect the displacement of the plate.

[0051] In this embodiment, the cutting module 233 includes a connecting frame 2331, a connecting shaft 2332, a cutting knife 2333 and a rotation driving device 2334. The connecting frame 2331 is arranged vertically and one side is connected to the outside of the adjusting block. The lower end of the connecting frame 2331 is vertically rotatably provided with a connecting shaft 2332, and the axis of rotation of the connecting shaft 2332 is vertical. A freely rotatable cutting knife 2333 is vertically provided at the lower end of the connecting shaft 2332, and the upper end of the connecting shaft 2332 is connected to the rotation driving device 2334. By driving the connecting shaft 2332 to rotate through the rotation driving device 2334, the cutting knife 2333 is driven to rotate around the vertical axis. The design that the cutting knife 2333 is vertically and freely rotatably arranged at the lower end of the connecting shaft 2332 enables the cutting module 233 to complete the film cutting work during both the forward and return movements when moving along the main frame 21, without the need to set a return waiting time. At the same time, the rotation speed of the cutting knife 2333 is determined by the sliding speed of the cutter assembly 23 along the main frame 21, ensuring that there is no relative sliding between the cutting knife 2333 and the plate, and thus protecting the plate from being damaged by the cutting knife 2333.

[0052] Further, the connecting shaft 2332 can drive the cutting knife 2333 to rotate around the axis of the connecting shaft 2332 under the action of the rotation driving device 2334, so that there are at least two states in the plane where the cutting knife 2333 is located, perpendicular to the transportation direction of the glass plate 3 and parallel to the transportation direction of the glass plate 3. When the cutting knife 2333 is perpendicular to the transportation direction of the glass plate 3, the cutting knife assembly 23 slides along the main frame 21, and the cutting knife 2333 completes the cutting work of the film at the end of the glass plate 3. When the cutting knife 2333 is parallel to the transportation direction of the glass plate 3, as the glass plate 3 moves along the transportation line 11, the cutting knife 2333 completes the cutting work of the side film on one side of the glass plate 3. Such a design method eliminates the need to align the films on both sides of the glass plate 3 during the film pasting work. At the same time, when the width of the glass plate 3 changes, there is no need to replace the film as required, greatly increasing the working efficiency of film coverage.

[0053] Specifically, the connecting frame 2331 is a hollow shell-like structure, with a connecting port extending inward in the middle. Connecting pieces are provided at both the connecting port and the lower end of the connecting frame 2331. The upper end of the connecting shaft 2332 penetrates upward from the lower end of the connecting frame 2331 and is rotationally connected to the connecting frame 2331 through the connecting piece. The transmission end of the rotation driving device 2334 penetrates vertically downward from the upper end of the connecting frame 2331 and is connected to the upper end of the connecting shaft 2332 through a coupling piece. The rotation driving device 2334 can drive the connecting shaft 2332 to rotate, and then drive the cutting knife 2333 to rotate around the vertical axis.

[0054] Preferably, combined with Figure 4 , the connecting shaft 2332 is slidably connected to the connecting piece and can slide vertically within the connecting piece. The upper hollow part of the connecting frame 2331 is an upper chamber. The coupling piece is located in the upper chamber. Its upper end is connected to the transmission end of the rotation driving device 2334 through the first coupling shaft 2335, and its lower end is connected to the upper end of the connecting shaft 2332 through the second coupling shaft 2336. Moreover, the first coupling shaft 2335 and the second coupling shaft 2336 are telescopically connected without relative rotation. While the second power device drives the connecting shaft 2332 to rotate, the connecting shaft 2332 can vertically lift within the connecting frame 2331 under the action of an external force, thereby driving the cutting knife 2333 to have an up and down displacement amount, making the contact between the cutting knife 2333 and the glass plate 3 non-rigid. In this way, even when the surface of the glass plate 3 is uneven or there are obstacles at the cutting position, the surface of the glass plate 3 can be better protected to prevent damage to the cutting knife 2333 or the glass plate 3.

[0055] As a further preference, combined with Figure 5, the hollow part at the lower part of the connecting frame 2331 is a lower chamber, and an elastic element is further arranged in the lower chamber. The part of the connecting shaft 2332 located in the lower chamber is elastically connected to the connecting frame 2331 through the elastic element, and the elastic force received by the connecting shaft 2332 is vertically downward. This design method enables the cutting knife 2333 to always abut against the surface of the glass plate 3, making the cutting of the film more sufficient. At the same time, the elastic element combined with the design that the connecting shaft 2332 can be vertically lifted and lowered enables the device to adjust the pressing force of the cutting knife 2333 on the plate through the adjustment module 232 according to the plate material or the film thickness, increasing the use effect of the device.

[0056] Specifically, the elastic element includes a spring and a transfer member. The spring is arranged around the connecting shaft 2332, and the lower end presses against the connecting shaft 2332 downward, and the upper end presses against the outer ring of the lower end of the connecting port upward. A transfer member is provided at the end where the spring presses against the connecting port. The transfer member is a thrust ball bearing. The spring is rotationally connected to the outer ring of the lower end of the connecting port through the thrust ball bearing. The setting of the thrust ball bearing enables the cutting knife 2333 to still provide a good pressing force on the connecting shaft 2332 when it rotates with the connecting shaft 2332. Of course, the thrust ball bearing can also be located at the end where the spring presses against the connecting shaft 2332. The position of the thrust ball bearing is not restricted in this embodiment.

[0057] In the plate film covering device with a rotatable cutting knife described in this embodiment, its film cutting method includes the following steps:

[0058] (1): Start the film covering machine, continuously place the glass plate 3 on the transport line 11, and the transport line 11 drives the glass plate 3 to move to the film covering part to complete film covering. At this time, the outer side of the film is flush with the outer side of the glass plate 3 and no cutting is required;

[0059] (2): The film-covered glass plate 3 continues to move along the transport line 11 to the position where the cutting knife 2333 is located at the lower part of the first end, and the transport line 11 stops running. At this time, the cutting knife 2333 is located above the outer side of the glass plate 3, and the plane where the cutting knife 2333 is located is perpendicular to the transport direction of the glass plate 3;

[0060] (3): The cutting knife 2333 moves downward under the drive of the adjustment module 232 to abut against the upper part of the glass plate 3, and then the cutter assembly 23 slides along the main frame 21 to the inner side of the glass plate 3 to complete the cutting work of the film at the first end of the glass plate 3;

[0061] (4): The cutting knife 2333 first moves upward under the drive of the adjustment module 232 to disengage from the upper part of the glass plate 3, and then rotates under the drive of the connecting shaft 2332 to a plane parallel to the transport direction of the glass plate 3;

[0062] (5): The cutting knife 2333 moves downward under the drive of the adjustment module 232 until it abuts against the upper part of the glass plate 3. The transport line 11 drives the glass plate 3 to continue moving until the tail end of the glass plate 3 reaches below the cutting knife 2333, and then the transport line 11 stops running.

[0063] (6): First, the cutting knife 2333 moves upward under the drive of the adjustment module 232 to disengage from the upper part of the glass plate 3, and then rotates under the drive of the connecting shaft 2332 until its plane is perpendicular to the transport direction of the glass plate 3.

[0064] (7): The cutting knife 2333 moves downward under the drive of the adjustment module 232 until it abuts against the upper part of the glass plate 3, and the cutter assembly 23 slides toward the outside of the glass plate 3 to complete the cutting of the film at the tail end of the glass plate 3.

[0065] (8): First, the cutting knife 2333 moves upward under the drive of the adjustment module 232 to disengage from the upper part of the glass plate 3, and then the transport line 11 continues to run until the head end of the next glass plate 3 reaches below the cutting knife 2333, and then the transport line 11 stops running.

[0066] (9): Repeat steps (3)-(8) to complete the continuous cutting of the glass plate 3.

[0067] Further, in combination with Figure 6 , through the working mode of the above steps, the cutting knife 2333 can complete the cutting of the end and one side of the plate in an S shape relative to the plate, so that the cutting work of the cutting knife 2333 can be continuously completed, further ensuring the film covering efficiency of the plate.

[0068] Preferably, when the cutting knife 2333 abuts against the upper part of the plate in steps (3), (5) and (7), it is in an elastic abutting state with the upper part of the plate, and the pressing force of the cutting knife 2333 on the glass plate 3 can be adjusted through the adjustment of the adjustment module 232, so as to ensure that the cutting work of the film can be fully carried out while ensuring that the cutting knife 2333 will not damage the glass plate 3.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes, increases or decreases that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. Film cutting method of a plate film laminating device with a rotatable cutter, characterized in that, the film laminating device includes a transmission part (1), a film laminating part and a cutting part (2). The transmission part (1) is horizontally arranged, and the plate to be film laminated can move driven by the transmission part (1). The film laminating part is used for film laminating the surface of the plate, and the cutting part (2) is located behind the film laminating part for cutting the film after the plate is film laminated; the transmission part (1) includes a transport line (11), a first power device and a control unit. The transport line (11) is in transmission connection with the first power device, and the first power device is in communication connection with the control unit. The control unit can control the start, stop and transport speed of the transport line (11) by controlling the first power device; the cutting part (2) includes a main frame (21) arranged perpendicular to the transport direction of the transport line (11). A cutter assembly (23) is slidably arranged on the main frame (21) along the arrangement direction of the main frame (21). The cutter assembly (23) includes a connecting plate (231), an adjusting module (232) and a cutting module (233). The cutter assembly (23) is slidably connected to the main frame (21) through the connecting plate (231), and the cutting module (233) is vertically slidably arranged on one side of the connecting plate (231) through the adjusting module (232); the cutting module (233) includes a connecting frame (2331), a connecting shaft (2332), a cutting knife (2333) and a second power device. The cutting module (233) is connected to the adjusting module (232) through the connecting frame (2331). One end of the connecting frame (2331) facing the transport line (11) is vertically rotatably provided with a connecting shaft (2332), and the rotation axis of the connecting shaft (2332) is vertical. A freely rotatable cutting knife (2333) is vertically arranged at the outer end of the connecting shaft (2332). The connecting shaft (2332) can drive the cutting knife (2333) to rotate around the axis of the connecting shaft (2332) under the action of the second power device; the connecting frame (2331) includes a hollow shell-like structure, and an inner ring in the middle extends inward to form a connecting port. The connecting shaft (2332) extends into the inside of the connecting frame (2331) from the lower end of the connecting frame (2331) and is rotatably connected to the connecting port. The transmission end of the second power device extends into the inside of the connecting frame (2331) from the upper end of the connecting frame (2331) and is connected to the upper end of the connecting shaft (2332) through a connecting device; The upper hollow part of the connecting frame (2331) is an upper chamber. The connecting device is located in the upper chamber. Its upper end is connected to the second power device through a first connecting shaft (2335), and its lower end is connected to a connecting shaft (2332) through a second connecting shaft (2336). Moreover, the first connecting shaft (2335) and the second connecting shaft (2336) are telescopically connected without relative rotation. While the second power device drives the connecting shaft (2332) to rotate, the connecting shaft (2332) can vertically lift and lower in the connecting frame (2331) under the action of an external force, thereby driving the cutting knife (2333) to have an up-and-down displacement amount, so that the cutting knife (2333) is in non-rigid contact with the glass plate (3); The lower hollow part of the connecting frame (2331) is a lower chamber. An elastic element is also provided in the lower chamber. The part of the connecting shaft (2332) located in the lower chamber is elastically connected to the connecting frame (2331) through the elastic element, and the elastic force received by the connecting shaft (2332) is vertically downward; The film cutting method includes the following steps: (1): Start the film laminating machine, continuously place the plate on the transport line (11), and the transport line (11) carries the plate to move to the film laminating part position to complete film lamination; (2): The plate after film lamination continues to move along the transport line (11) to the lower part of the cutting knife (2333) at the head end. The transport line (11) stops running. At this time, the cutting knife (2333) is located on one side above the plate, and the plane where the cutting knife (2333) is located is perpendicular to the plate transport direction; (3): The cutting knife (2333) moves downward under the drive of the adjustment module (232) until it abuts against the upper part of the plate. Then the cutter assembly (23) slides along the main frame (21) to the other side of the plate to complete the cutting work of the film at the head end of the plate; (4): The cutting knife (2333) first moves upward under the drive of the adjustment module (232) until it disengages from the upper part of the plate, and then rotates to a plane parallel to the plate transport direction under the drive of the connecting shaft (2332); (5): The cutting knife (2333) moves downward under the drive of the adjustment module (232) until it abuts against the upper part of the plate. The transport line (11) carries the plate to continue moving until the tail end of the plate reaches below the cutting knife (2333), and the transport line (11) stops running; (6): The cutting knife (2333) first moves upward under the drive of the adjustment module (232) until it disengages from the upper part of the plate, and then rotates to a plane perpendicular to the plate transport direction under the drive of the connecting shaft (2332); (7): The cutting knife (2333) moves downward under the drive of the adjustment module (232) until it abuts against the upper part of the plate. The cutter assembly (23) slides reversely along the main frame (21) to complete the cutting work of the film at the tail end of the plate; (8): The cutting knife (2333) first moves upward under the drive of the adjustment module (232) until it disengages from the upper part of the plate, and then the transport line (11) continues to run until the head end of the next plate reaches below the cutting knife (2333), and the transport line (11) stops running; (9): Repeat steps (3)-(8) to complete the continuous cutting work of the plate.

2. The film cutting method of a sheet laminating device with a rotatable cutter, according to claim 1, characterized in that, the laminating part and the cutting part (2) are located above the transport line (11) of the transmission part (1).

3. The film cutting method of a sheet laminating device with a rotatable cutter, according to claim 2, characterized in that, the elastic element includes a spring and a transfer member. The spring is arranged around the connecting shaft (2332), with its lower end pressing tightly against the connecting shaft (2332) downward and its upper end pressing tightly against the outer ring of the lower end of the connecting port upward. A transfer member is provided at the position where the spring presses tightly against the connecting shaft (2332) and / or the lower end outer ring of the connecting port, and is rotationally connected to the connecting shaft (2332) and / or the lower end outer ring of the connecting port through the transfer member.

4. The film cutting method of a sheet laminating device with a rotatable cutter, according to claim 1, characterized in that, a power unit is provided on the main frame (21). A slide rail is also provided on one side of the main frame. The side of the connecting plate (231) away from the cutting module (233) is slidably connected to the slide rail through a chute. The connecting plate (231) is connected to the power unit and can slide along the slide rail under the drive of the power unit.

5. The film cutting method of a sheet laminating device with a rotatable cutter, according to claim 1, characterized in that, when the sheet is laminated in step (1), one side of the film is flush with the sheet and does not need to be cut. At the same time, in step (2), the initial position of the cutting knife (2333) is above the side where the sheet and the film are flush.

6. The film cutting method of a sheet laminating device with a rotatable cutter, according to claim 5, characterized in that, when the cutting knife (2333) abuts against the upper part of the sheet in steps (3), (5) and (7), it is in an elastic abutting state with the upper part of the sheet.

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