Film laminating zero-time switching device for film laminating machine

Abstract

The invention relates to the field of metal plate film laminating, in particular to a film laminating zero-time switching device for a film laminating machine, which is arranged in a film laminating machine body and comprises two first compression rollers which are horizontally arranged and vertically distributed, a gap is arranged between the two first compression rollers, protective films are wound on the roller surfaces, and the two first compression rollers are symmetrically distributed along a plate conveying area; the two second pressing rollers are horizontally arranged and vertically distributed, a gap is formed between the two second pressing rollers, the two second pressing rollers are both arranged on one side of the first pressing roller, protective films are wound on the roller surfaces, and the two second pressing rollers are symmetrically distributed along the plate conveying area; one ends of the multiple conversion frames are connected with the two ends of the first compression roller and the second compression roller, and the other ends of the multiple conversion frames are rotationally connected to the machine body; the membrane changing assembly is arranged on the side wall of one side of the machine body; the driving assembly is arranged on the side wall of the other side of the machine body. The film laminating device has the effects of improving the film laminating efficiency of the metal plate and ensuring the film laminating continuity and stability.

Description

Technical Field

[0001] The present application relates to the field of metal sheet lamination, and in particular to a lamination zero-time switching device for a laminating machine. Background Art

[0002] During the processing of metal sheets, such as cutting, bending, welding and other links, scratches are easily generated, resulting in defective products. During the transportation, storage and processing of processed metal sheets, they are easily damaged by liquid or solid pollutants. Therefore, in order to protect the finished metal sheets, a laminating machine is usually added to the metal sheet processing line to coat the surface of the metal sheet with a protective film.

[0003] The structure of the laminating machine is relatively simple. The protective film is wrapped around a pressure roller parallel to the surface of the metal sheet, and the metal sheet is pressed while the sheet is being transported. For a double-sided laminating machine, an additional pressure roller is set under the metal sheet. The two pressure rollers simultaneously press both sides of the metal sheet being transported, and at the same time, the protective film is applied to the surface of the metal sheet. Traditional laminating machines need to be shut down when replacing the roll of protective film on the pressure roller, which will cause production interruptions and reduce productivity. For example, a color film laminating device with publication number CN116160673A that is easy to switch laminating rollers, although this solution effectively shortens the time required to replace the pressure roller, still requires shutdown, and zero-time switching cannot be achieved.

[0004] With regard to the above-mentioned related technologies, the inventor believes that an improved design should be made from the structural perspective of the laminating machine to realize a zero-time switching device for laminating, provide continuity and stability of the laminating process, avoid damage to the surface of the board due to shutdown and restart of the equipment, and improve the laminating efficiency. Summary of the invention

[0005] In order to improve the laminating efficiency of metal plates and ensure the continuity and stability of laminating, the present invention provides a laminating zero-time switching device for a laminating machine.

[0006] The present invention provides a zero-time switching device for laminating a laminating machine, which adopts the following technical solution: A laminating zero-time switching device for a laminating machine is arranged in a body of the laminating machine, comprising: First pressing rollers, two of which are arranged horizontally and distributed vertically, a gap is arranged between the two first pressing rollers, a protective film is wrapped around the roller surface, and the two first pressing rollers are symmetrically distributed along the plate conveying area; The second pressing rollers are arranged horizontally and vertically, with a gap between the two second pressing rollers, and both are arranged in front of the first pressing roller in the sheet conveying direction, with a protective film wrapped around the roller surface, and the two second pressing rollers are symmetrically distributed along the sheet conveying area; A conversion frame is provided corresponding to both ends of the first pressing roller and the second pressing roller, wherein one end of the plurality of conversion frames is connected to both ends of the first pressing roller and the second pressing roller, and the other end is rotatably connected to the machine body; A membrane replacement assembly is arranged on a side wall of the machine body; The driving assembly is arranged on the other side wall of the machine body.

[0007] By adopting the above technical scheme, an additional set of pressure rollers as the second pressure rollers is added to the laminating machine of the traditional technology, and the first pressure roller and the second pressure roller work alternately. The first pressure roller is the pressure roller in the existing laminating machine. When the protective film on the first pressure roller is used up, under the rotation of the conversion frame, the first pressure roller and the second pressure roller rotate as a whole, so that the position of the second pressure roller is rotated to the first pressure roller, and the second pressure roller replaces the first pressure roller to work, so as to realize the seamless switching between the first pressure roller and the second pressure roller. While the two second pressure rollers are pressed against the plate to perform the laminating work, the user replaces the new protective film roll on the first pressure roller. Specifically, the first pressing roller and the second pressing roller should be a moving whole, connected by a conversion frame, and a driving device corresponding to the conversion frame is provided on the inner wall of the machine body, which drives the conversion frame to rotate, so that the positions of the first pressing roller and the second pressing roller are rotated and shifted, and the second pressing roller is switched to the position of the first pressing roller, or the second pressing roller moves down to replace the first pressing roller to press the metal sheet; the above scheme is applicable to both single-sided lamination and double-sided lamination of the sheet. In the technical scheme of single-sided lamination, a protective film is only wound on the pressing roller above the sheet conveying area, but the first pressing roller and the second pressing roller below the sheet conveying area should rotate synchronously with the corresponding first pressing roller or second pressing roller above the sheet, so that the pressing force on both sides of the sheet is uniform to avoid deformation of the sheet; After the first pressure roller and the second pressure roller are switched, the technician replaces the protective film wrapped on the first pressure roller and the second pressure roller through the corresponding open film changing assembly on the machine body. The film changing assembly should be arranged on the opposite side of the drive assembly to avoid interference between the drive assembly and the film changing assembly, and considering that the technician needs to separate the first pressure roller and the second pressure roller from the drive assembly when changing the film, the protective film on the first pressure roller and the second pressure roller can be removed only when it is determined that there is no drive structure connection. Therefore, the film changing assembly needs to be arranged on the opposite side of the drive assembly to avoid the drive assembly blocking the roller changing work.

[0008] Optionally, the roller centers of the first pressing roller and the second pressing roller on the same side of the sheet conveying area are distributed on a vertical circumference line, and the center of the distribution circle is an end of the conversion frame away from the first pressing roller and the second pressing roller; The first pressing roller and the second pressing roller distributed on the same vertical circumferential line are distributed on both sides of the lowest point of the circumferential line.

[0009] By adopting the above technical solution, the first pressing roller and the second pressing roller are arranged horizontally, and in the inclined plane formed by the axes of the two pressing rollers, the first pressing roller and the second pressing roller remain parallel, so that the end of the first pressing roller and the end of the second pressing roller at the same end are in a vertical plane, so that when the conversion frame rotates, the first pressing roller and the second pressing roller remain in a horizontal state, ensuring that the two pressing rollers switch synchronously and the protective film surface remains horizontal when it abuts against the metal plate, so that the surface of the plate is evenly stressed; In the above scheme, the working positions of the first pressure roller and the second pressure roller on the same side of the plate conveying area should avoid the lowest point of the distribution circumference line and be distributed on both sides of the lowest point. Therefore, when the first pressure roller and the second pressure roller switch their working states with each other, it is ensured that when the two pressure rollers shift along the rotation direction of the conversion frame, the pressure roller that needs to update the protective film roll moves upward, and the pressure roller that needs to be converted to the working state moves downward, that is, ensure that the moving directions of the first pressure roller and the second pressure roller are correct; for example, when the protective film roll on the first pressure roller is used up and the second pressure roller needs to be replaced as the working roller, the conversion frame drives the first pressure roller and the second pressure roller to rotate in the opposite direction to the plate conveying direction, the first pressure roller is lifted, the roller surface is away from the plate, the second pressure roller is lowered, and the roller surface abuts against the plate.

[0010] Optionally, the conversion frame has a portion of its length connected to the first pressing roller that is different from a portion of its length connected to the second pressing roller.

[0011] By adopting the above technical scheme, the distribution circumference of the first pressure roller and the second pressure roller is changed into an ellipse, and the working points of the first pressure roller and the second pressure roller are changed. Generally speaking, it is recommended that the length of the part of the conversion frame connecting the second pressure roller is greater than the length of the part connecting the first pressure roller. This technical scheme can effectively reduce the working state conversion of the first pressure roller and the second pressure roller, that is, the switching time of the conversion frame; and the length of the conversion frame corresponding to the second pressure roller is greater than the length of the conversion frame corresponding to the first pressure roller, so that the coating area of ​​the second pressure roller is located in front of the coating area of ​​the first pressure roller in the conveying direction of the plate. Therefore, after the coating of the first pressure roller is completed, the omission of the coating area is avoided during the conversion of the second pressure roller.

[0012] Optionally, the membrane replacement component includes: Door panels are arranged on one side of the two first pressing rollers and the two second pressing rollers in a one-to-one correspondence, one side of the door panels is hinged to one side of the machine body, a through groove is provided on the side wall of the machine body corresponding to the door panels, a sliding groove is horizontally provided on the side wall of the machine body, one end of the sliding groove is connected to the through groove, and the opening area of ​​the through groove is larger than the end surface area of ​​the first pressing roller and the second pressing roller; The roller shafts of the first pressing roller and the second pressing roller are rotatably connected to one end of the sliding groove, and the end portion of the sliding groove is configured to be arc-shaped.

[0013] By adopting the above technical solution, a channel for sliding the first and second pressure rollers to replace the film roll is provided, thereby improving the efficiency of film roll replacement, and the sliding replacement can serve as a structural basis for replacing the film roll without disassembling the roller body; The sliding groove and the through groove are both horizontally penetrated through the machine body shell. In the normal working state, the roller shafts of the first pressure roller and the second pressure roller extend from the end of the sliding groove away from the through groove and are fixed in position. The first pressure roller and the second pressure roller rotate under the drive of the driving component on the side of the machine body opposite to the sliding groove; when the protective film roll on the first pressure roller and the second pressure roller needs to be replaced, the two pressure rollers rotate under the drive of the conversion frame, and the rotation trajectory adapts to the arc part of the sliding groove. In addition to the structural concession, the arc part of the sliding groove also plays a guiding role for the first pressure roller and the second pressure roller; when the protective film roll needs to be replaced, after the first pressure roller or the second pressure roller rotates from the arc part to the horizontal part, the technician disassembles the connection between the conversion frame and the roller shaft of the first pressure roller or the second pressure roller, and continues to slide the first pressure roller or the second pressure roller, and at the same time opens the door panel to slide the first pressure roller and the second pressure roller into the through groove. The technician can pull the pressure roller in the through groove for subsequent film replacement work. This scheme replaces the disassembly in the traditional scheme by sliding, which greatly improves the film replacement efficiency; Therefore, technicians can also briefly judge the working status of the first pressure roller and the second pressure roller by their positions in the sliding grooves; the first pressure roller and the second pressure roller are respectively at different ends of the arc-shaped parts of their respective sliding grooves, and the pressure roller at one end of the arc-shaped part of the sliding groove away from the through groove is in a working state, otherwise it is in a waiting state.

[0014] Optionally, the membrane replacement component further includes: The membrane changing grooves are horizontally arranged inside the machine body corresponding to the sliding grooves one by one, and the length direction is parallel to the axial direction of the first pressing roller and the second pressing roller, and the height of the axis of the membrane changing groove is flush with the opening height of the sliding groove; the side of the membrane changing groove away from the first pressing roller and the second pressing roller is provided with a sliding structure, so that the membrane changing groove is slidably connected to the machine body; One end of the sliding groove extends to the center position of one end wall of the membrane replacement groove; The door plate is arranged on an end wall of the membrane changing groove, or the door plate constitutes an end wall of the membrane changing groove.

[0015] By adopting the above technical scheme, the first pressure roller and the second pressure roller are slid to one end of the sliding groove, the roller axis of the first pressure roller or the second pressure roller is aligned with the center position of the groove wall of the film changing groove, and the roller body parts of the first pressure roller and the second pressure roller are clamped in the film changing groove; the film changing groove is clamped inside the machine body under normal conditions, and when the first pressure roller and the second pressure roller that need to replace the protective film slide into the film changing groove, the film changing groove drives the pressure roller that needs to replace the protective film to slide to the outside of the machine body until the first pressure roller or the second pressure roller completely slides out of the machine body, and the technicians can replace the protective film roll.

[0016] Optionally, the driving component includes: A driving motor, corresponding to the first pressing roller and the second pressing roller one by one, a main body of which is slidably connected to the machine body, and an output shaft end is connected to the first pressing roller and the second pressing roller; Another sliding groove is symmetrically provided on one side of the machine body close to the driving motor; A side of the machine body close to the driving motor is symmetrically provided with through grooves, and the door panel is arranged thereon.

[0017] By adopting the above technical solution, the driving motor is at the end of the first pressing roller and the second pressing roller away from the membrane changing assembly. In order to realize the timely replacement and replacement of the pressing rollers, a driving motor must be correspondingly arranged on each of the first pressing roller and the second pressing roller. When the conversion frame is converted, the first pressing roller and the second pressing roller are pressed down at the same time, and the driving motor drives the first pressing roller and the second pressing roller to rotate in time; Therefore, sliding grooves and through grooves must be symmetrically opened on both sides of the machine body to realize the sliding of the driving motor synchronously with the first pressure roller and the second pressure roller. After the pressure roller that needs to replace the protective film is transported to the film changing groove, the film changing groove drives the first pressure roller or the second pressure roller to slide. At the same time, the driving motor arranged on the outer wall at one end of the film changing groove slides synchronously. When replacing the protective film roll, the technician removes the end connection part of the output shaft of the driving motor.

[0018] Optionally, a notch is provided at one end of the conversion frame close to the ends of the first pressure roller and the second pressure roller and at the portion connecting the roller shafts of the first pressure roller and the second pressure roller. The notch is inclined upward, and the diameter of the notch is adapted to the shaft diameter of the first pressure roller and the second pressure roller.

[0019] By adopting the above technical solution, the diameter of the notch is adapted to the roller shaft diameters of the first pressure roller and the second pressure roller, so that the roller shafts of the first pressure roller and the second pressure roller can be completely accommodated in the notch; under normal working conditions, the conversion frame is tilted, and the notch tilted upward can accommodate the roller shafts of the first pressure roller and the second pressure roller on the conversion frame without additionally setting a clamping structure, so that the roller shafts can rotate stably, so it is only necessary to set pressure pieces on the side walls of both sides of the machine body for compression; When the protective film on the first pressure roller or the second pressure roller needs to be replaced, when the roller shaft moves along the arc portion of the sliding groove to the intersection of the arc portion and the horizontal portion of the sliding groove, the notch portion remains horizontal, and the technician can directly slide the pressure roller.

[0020] Optionally, two opposite side walls of the body are provided with inner grooves corresponding to the sliding grooves, the inner grooves are provided inside the side walls of the body, and the area of ​​the inner grooves is larger than the area of ​​the sliding grooves.

[0021] By adopting the above technical solution, the inner groove and the sliding groove formed inside the two opposite side walls of the machine body form a stepped structure, and a sliding block adapted to the height of the inner groove can be arranged in the inner groove. Since the penetration area of ​​the sliding groove is smaller than the opening area of ​​the inner groove, the sliding block can be stably and movably connected in the inner groove and slide along the length direction of the sliding groove. On this basis, the inner groove and the sliding groove are opened to the door panel, or to the wall of the film changing groove. The slider is integrally formed with the first pressure roller and the second pressure roller, driving the roller whose protective film roll needs to be replaced to slide to the wall of the film changing groove for subsequent film changing steps.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting the first pressing roller and the second pressing roller and arranging them at the front and rear positions of the sheet conveying direction, it is not necessary to stop the production process when switching the protective film, realizing zero-time switching of the lamination, and significantly improving the production efficiency; 2. The design of the conversion frame allows for quick conversion between the first and second pressure rollers, reducing the time and complexity of manual adjustment and reducing labor costs; 3. The effective coordination between the film changing assembly and the driving assembly ensures the precise movement of each component during the switching process, thus ensuring the consistency and stability of the coating quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the internal structure of the body in the embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the overall structure from another angle in the embodiment of the present application.

[0026] Figure 4 It is a structural schematic diagram made to highlight the membrane replacement slot in the embodiment of the present application.

[0027] Figure 5 It is a cross-sectional view made to highlight the inner groove in the embodiment of the present application.

[0028] Explanation of the reference numerals: 1. machine body; 11. first pressing roller; 12. second pressing roller; 13. conversion frame; 14. threading groove; 15. sliding groove; 16. inner groove; 2. membrane changing groove. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] The present application embodiment discloses a zero-time switching device for laminating a laminating machine. Figure 1A zero-time switching device for a laminating machine is arranged inside a machine body 1, between two opposite side walls of the machine body 1. When the protective film is used up and needs to be replaced, a technician needs to stop the machine and replace the protective film on the laminating device.

[0031] Reference Figure 1 A zero-time switching device for laminating a film laminating machine includes two first rollers 11 and two second rollers 12. The two first rollers 11 are respectively arranged above and below the sheet conveying area, and are symmetrically arranged along the sheet conveying area. The two second rollers 12 are respectively arranged above and below the sheet conveying area, and are symmetrically arranged along the sheet conveying area. The two first rollers 11 are arranged on the same side of the two second rollers 12. The first roller 11 and the second roller 12 are wound with a protective film roll for pressing against and contacting the sheet. The working states of the first roller 11 and the second roller 12 are opposite. When the two first rollers 11 press against the sheet, the two second rollers 12 are away from the sheet. When the two second rollers 12 press against the sheet, the two first rollers 11 are away from the sheet. The two first rollers 11 and the two second rollers 12 are both wound with a protective film, pressing against the sheet, and passively rotated as the sheet is conveyed, so as to cover the protective film on the metal sheet.

[0032] Reference Figure 1 and Figure 2In order to realize the simultaneous rotation of the first pressing roller 11 and the second pressing roller 12, a conversion frame 13 is arranged inside the machine body 1 to connect the first pressing roller 11 and the second pressing roller 12. Two conversion frames 13 are arranged horizontally, and the two conversion frames 13 are arranged above and below the sheet conveying area respectively. The central parts of the two conversion frames 13 are arranged horizontally inside the machine body 1, and are rotatably connected to the other side of the machine body 1 and extend out of the two sides of the machine body 1. One side of the machine body 1 is provided with a driving motor corresponding to the two conversion frames 13. The rotating shaft of the driving motor is connected to the part extending from the conversion frame 13. The main body of the driving motor is fixed to the side wall of the machine body 1, which is used to drive the conversion frame 13 to rotate. The axis of the rotating shaft of the conversion frame 13 rotates along the vertical distribution circle to realize the state switching of the first pressing roller 11 and the second pressing roller 12. Based on this, the rotation state of the two conversion frames 13 should be synchronous. In the same period of time, the two first pressing rollers 11 are pressed against the metal sheet, or the two second pressing rollers 12 are pressed against the metal sheet. The two ends of the central part of the conversion frame 13 extend to and are connected to the roller core parts of the first pressure roller 11 and the second pressure roller 12, and the lengths of the parts of the conversion frame 13 corresponding to the connection between the first pressure roller 11 and the second pressure roller 12 are different, so that the rotation trajectories of the first pressure roller 11 and the second pressure roller 12 do not overlap, or the working points of the first pressure roller 11 and the second pressure roller 12 are respectively arranged in different parts of the sheet conveying area, so as to solve the problem that the protective film may overlap or the protective film may not be fully covered when the first pressure roller 11 and the second pressure roller 12 are switched, and the pressure roller switching efficiency is improved; further, the first pressure roller 11 and the second pressure roller 12 on the same side of the sheet conveying area are respectively arranged on both sides of the lowest point of the distribution ellipse circumference, so as to shorten the descending time of the first pressure roller 11 and the second pressure roller 12, and further improve the switching efficiency.

[0033] Reference Figure 3 A driving motor is provided on one side of the machine body 1 corresponding to the first pressing roller 11 and the second pressing roller 12 to provide driving force for the first pressing roller 11 and the second pressing roller 12 to actively rotate, thereby overcoming the problem of insufficient power that may be caused by the first pressing roller 11 and the second pressing roller 12 passively rotating with the sheet conveying.

[0034] Reference Figure 3, through grooves 14 are provided on the side walls of the machine body 1, and the through grooves 14 are horizontally penetrated on the side walls of the machine body 1, and the through grooves 14 correspond to the roller shaft parts of the first pressing roller 11 and the second pressing roller 12 one by one, and the roller shafts of the first pressing roller 11 and the second pressing roller 12 pass through the through grooves 14 horizontally, and the through parts correspond to the through grooves 14 and are formed with a round cake-shaped structure adapted to the through grooves 14, so that the first pressing roller 11 and the second pressing roller 12 can slide along the through grooves 14. Therefore, in the working state, the axis center parts of the rotating shafts of the first pressing roller 11 and the second pressing roller 12 are arranged at one end of the through grooves 14, and when the protective film wrapped on the first pressing roller 11 or the second pressing roller 12 needs to be replaced, the working state is changed, and then it slides to the other end along the through grooves 14. Considering that the first pressure roller 11 and the second pressure roller 12 need to be stable at one end of the groove 14 under normal working conditions, a limit piece can be set inside the side wall of the body 1 at the end of the inner wall of the groove 14 corresponding to the rotating shaft of the first pressure roller 11 and the second pressure roller 12 to limit the position of the first pressure roller 11 and the second pressure roller 12 to avoid instability of the roller body.

[0035] Reference Figure 3 and Figure 4 , when the through groove 14 is away from the first pressing roller 11 and the second pressing roller 12 in the working state, a film changing groove 2 is opened at one end of the roller shaft, and the film changing groove 2 is horizontally opened inside the machine body 1, and the two ends penetrate the inner walls of the machine body 1 on both sides; the film changing grooves 2 correspond to the ends of the through groove 14 one by one, and the part of the film changing groove 2 that penetrates the end of the machine body 1 is connected to the through groove 14, so that the roller bodies of the first pressing roller 11 and the second pressing roller 12 can slide along the through groove 14 to the inside of the film changing groove 2. The part of the film changing groove 2 that penetrates the side walls of both sides of the machine body 1 is provided with a door panel, which can be hinged on one side or clamped at the edge, and can be set in a way that is convenient for technicians to take out; the technician slides the first pressing roller 11 or the second pressing roller 12 into the film changing groove 2, and the width of the groove part of the film changing groove 2 should be greater than the end face diameter of the roller body of the first pressing roller 11 and the second pressing roller 12 on the machine body 1, so that the film changing groove 2 can completely accommodate the roller body parts of the first pressing roller 11 and the second pressing roller 12.

[0036] Reference Figure 3 and Figure 4A slide bar is formed on one side wall of the film changing slot 2, and a slide bar adapted to the slide bar is opened on the inner wall of the machine body 1 corresponding to the slide bar, and the slide bar is connected along the slide bar, so that the film changing slot 2 slides out of the machine body 1 along the surface perpendicular to the side wall of the machine body 1, driving the first pressure roller 11 and the second pressure roller 12 to slide out of the machine body 1. In general, the film changing slot 2 forms a drawer-like structure inside the machine body 1. When the first pressure roller 11 or the second pressure roller 12 slides into the film changing slot 2, the technician can pull out the film changing slot 2 to take out the first pressure roller 11 or the second pressure roller 12 of the protective film roll to be replaced. The machine body 1 is provided with a support plate corresponding to the driving motor of the first pressure roller 11 and the second pressure roller 12, so that the motor does not move with the sliding of the first pressure roller 11 and the second pressure roller 12. The output shaft end of the driving motor is spline-connected with the roller shafts of the first pressing roller 11 and the second pressing roller 12. An electric cylinder is arranged between the support plate and the side wall of the machine body 1. The cylinder body of the electric cylinder is fixedly connected to the side wall of the machine body 1. The piston rod of the electric cylinder is fixedly connected to the support plate. The electric cylinder retracts the piston rod to fix the driving motor at the working position of the first pressing roller 11 and the second pressing roller 12. The electric cylinder extends the piston rod to push the driving motor to slide in the direction away from the machine body 1, thereby canceling the spline connection between the piston rod of the driving motor and the first roller shaft and the second roller shaft.

[0037] Reference Figure 2 and Figure 4 A sliding groove 15 is provided at the portion of each through groove 14 close to the roller shaft of the first pressure roller 11 and the second pressure roller 12. The sliding groove 15 is horizontally penetrated, and its groove body is an arc-shaped portion that adapts to the rotation trajectory of the conversion frame 13. The sliding groove 15 is connected to the through groove 14 as an extension of the through groove 14. In other words, the portion of each through groove 14 close to the first pressure roller 11 and the second pressure roller 12 is an arc-shaped portion, so that the first pressure roller 11 and the second pressure roller 12 are adapted to the rotation of the conversion frame 13. When the first pressure roller 11 and the second pressure roller 12 slide out of the arc-shaped portion of the sliding groove 15 and enter the through groove 14, the technician can slide them. In order to achieve smooth docking of the arc-shaped parts of the first pressure roller 11 and the second pressure roller 12 rotating and the linear sliding parts of the through groove 14, the conversion frame 13 is provided with an arc groove adapted to the first pressure roller 11 and the second pressure roller 12 on the roller shaft parts corresponding to the first pressure roller 11 and the second pressure roller 12. The arc groove is in the shape of a wrench, and the opening of the arc groove is inclined at a preset angle, so that when the first pressure roller 11 and the second pressure roller 12 rotate to the intersection of the sliding groove 15 and the through groove 14, the opening of the arc groove is horizontal; therefore, when the first pressure roller 11 and the second pressure roller 12 are in the working state, the wrench-shaped clamping structure and the arc-shaped groove body structure of the sliding groove 15 enable the roller shaft to rotate stably at one end of the through groove 14, and when the protective film rolls of the first pressure roller 11 and the second pressure roller 12 need to be replaced, it is also convenient to replace the protective film rolls on the first pressure roller 11 and the second pressure roller 12.

[0038] Reference Figure 3 and Figure 5In order to stabilize the fixation and sliding of the roller shaft and the through groove 14, inner grooves 16 are provided in the parts of the two side walls of the machine body 1 corresponding to the through groove 14 and the sliding groove 15. The inner grooves 16 are provided in the machine body 1. The groove width of the inner groove 16 is equal to the groove width of the sliding groove 15 and the through groove 14. The groove height of the inner groove 16 is greater than the groove height of the sliding groove 15 and the through groove 14, so that the top wall and the bottom wall of the through groove 14 are stepped; the round cake-shaped structure formed at the ends of the first pressing roller 11 and the second pressing roller 12 in the through groove 14 is slidably connected in the inner groove 16, and the diameter of the round cake-shaped structure is greater than the diameter of the through groove 14 and equal to the diameter of the inner groove 16, so that the stepped structure formed by the bottom wall of the inner groove 16 and the bottom wall of the through groove 14 stably clamps the first pressing roller 11 and the second pressing roller 12.

[0039] The implementation principle of a zero-time switching device for a laminating machine in an embodiment of the present application is as follows: an additional group of pressure rollers as the second pressure roller 12 is added to the laminating machine of the traditional technology, and the first pressure roller 11 and the second pressure roller 12 work alternately. The first pressure roller 11 is a pressure roller in the existing laminating machine. When the protective film on the first pressure roller 11 is used up, under the rotation of the conversion frame 13, the first pressure roller 11 and the second pressure roller 12 rotate as a whole, so that the position of the second pressure roller 12 is rotated to the first pressure roller 11, replacing the first pressure roller 11 to work, thereby realizing seamless switching between the first pressure roller 11 and the second pressure roller 12. While the two second pressure rollers 12 are pressed against the plate to perform the laminating work, the user replaces the new protective film roll on the first pressure roller 11.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any 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 laminating zero-time switching device for a laminating machine, arranged in a laminating machine body (1), characterized in that: include: First pressing rollers (11), two of which are arranged horizontally and distributed vertically, a gap is arranged between the two first pressing rollers (11), a protective film is wound on the roller surface, and the two first pressing rollers (11) are symmetrically distributed along the plate conveying area; Second pressing rollers (12), two of which are arranged horizontally and distributed vertically, a gap is provided between the two second pressing rollers (12), and both are arranged in front of the first pressing roller (11) in the sheet conveying direction, a protective film is wrapped around the roller surface, and the two second pressing rollers (12) are symmetrically distributed along the sheet conveying area; A conversion frame (13) is provided corresponding to the two ends of the first pressing roller (11) and the second pressing roller (12); one end of the plurality of conversion frames (13) is connected to the two ends of the first pressing roller (11) and the second pressing roller (12), and the other end is rotatably connected to the machine body (1); A membrane replacement assembly is arranged on a side wall of the machine body (1); The driving assembly is arranged on the other side wall of the machine body (1).

2. The zero-time switching device for laminating machine according to claim 1, characterized in that: The roller centers of the first pressing roller (11) and the second pressing roller (12) on the same side of the sheet conveying area are distributed on a vertical circumferential line, and the center of the distribution circle is an end of the conversion frame (13) away from the first pressing roller (11) and the second pressing roller (12); The first pressing roller (11) and the second pressing roller (12) which are distributed on the same vertical circumferential line are distributed on both sides of the lowest point of the circumferential line.

3. The zero-time switching device for laminating machine according to claim 2, characterized in that: The conversion frame (13) connects a portion of the length of the first pressing roller (11) and a portion of the length of the conversion frame (13) that is different from the portion of the length of the conversion frame (13) that is connected to the second pressing roller (12).

4. The zero-time switching device for laminating machine according to claim 1, characterized in that: The membrane replacement assembly comprises: Door panels are arranged one by one on one side of the two first pressing rollers (11) and the two second pressing rollers (12); the door panels are movably connected to one side of the machine body (1); a through groove (14) is provided on the side wall of the machine body (1) corresponding to the door panels; a sliding groove (15) is horizontally provided on the side wall of the machine body (1); one end of the sliding groove (15) is connected to the through groove (14); and the opening area of ​​the through groove (14) is larger than the end surface area of ​​the first pressing roller (11) and the second pressing roller (12); The roller shafts of the first pressing roller (11) and the second pressing roller (12) are rotatably connected to one end of the sliding groove (15), and the end portion of the sliding groove (15) is arranged in an arc shape.

5. The zero-time switching device for laminating machine according to claim 4, characterized in that: The membrane replacement assembly also includes: The membrane changing grooves (2) are horizontally arranged inside the machine body (1) corresponding to the sliding grooves (15) one by one, and the length direction is parallel to the axial direction of the first pressing roller (11) and the second pressing roller (12), and the height at which the axis of the membrane changing grooves (2) is located is flush with the opening height of the sliding grooves (15); a sliding structure is arranged on the side of the membrane changing grooves (2) away from the first pressing roller (11) and the second pressing roller (12), so that the membrane changing grooves (2) are slidably connected to the machine body (1); One end of the sliding groove (15) extends to the center position of one end wall of the membrane replacement groove (2); The door panel is arranged on an end wall of the membrane changing groove (2), or the door panel constitutes an end wall of the membrane changing groove (2).

6. The zero-time switching device for laminating machine according to claim 5, characterized in that: The drive assembly comprises: A driving motor corresponding to the first pressing roller (11) and the second pressing roller (12) one by one, a main body portion of which is slidably connected to the machine body (1), and an output shaft end portion is connected to the first pressing roller (11) and the second pressing roller (12); Another sliding groove (15) is symmetrically provided on one side of the machine body (1) close to the driving motor; A side of the machine body (1) close to the driving motor is symmetrically provided with through grooves (14) and the door panel is arranged thereon.

7. The zero-time switching device for laminating machine according to claim 4, characterized in that: A notch is provided at one end of the conversion frame (13) close to the ends of the first pressing roller (11) and the second pressing roller (12), and at a portion connecting the roller shafts of the first pressing roller (11) and the second pressing roller (12). The notch is inclined upward, and the diameter of the notch is adapted to the shaft diameter of the first pressing roller (11) and the second pressing roller (12).

8. The zero-time switching device for laminating machine according to claim 7, characterized in that: Inner grooves (16) are provided on two opposite side walls of the machine body (1) corresponding to the sliding grooves (15); the inner grooves (16) are provided inside the side walls of the machine body (1); and the area of ​​the inner grooves (16) is larger than the area of ​​the sliding grooves (15).

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