Film conveying structure and film pressing device

Abstract

The present application relates to the field of film processing, and discloses a film conveying structure and a film pressing device, the film conveying structure comprising a fixing frame, a plurality of guide roller assemblies, a plurality of tensioning assemblies, an extension frame and a sliding frame, one end of the extension frame being hinged to the sliding frame, a guide rail being arranged on the fixing frame, the guide rail gradually reducing in height along the direction of the sliding frame to the fixing frame, the other end of the extension frame being placed on the guide rail and being in sliding connection with the guide rail, the sliding frame being arranged upstream of the fixing frame, the sliding frame being movable along the direction of approaching or moving away from the fixing frame, a plurality of guide roller assemblies being respectively arranged on the fixing frame and the extension frame, the guide roller assemblies being used for guiding the conveying of the film, the tensioning assemblies being arranged on the fixing frame, the tensioning assemblies being used for tensioning the film. The film pressing device comprises a pressing machine, the pressing machine comprising the film conveying structure, a film unwinding device and the pressing machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of film conveying, in particular to a composite device of film and protective film. BACKGROUND

[0002] After the cast film passes through the casting process, a layer of protective film needs to be coated on the surface of the film and then be pressed. However, the tension, temperature and thickness of the film need to be adjusted between the casting machine and the pressing machine so that the performance of the film after being pressed with the protective film is good.

[0003] The conveying distance between the casting machine and the pressing machine is generally adjusted by adjusting the position and number of the guide rollers for winding the film, for example, the conveying distance for natural cooling of the film. However, for some brittle films, the wrap angle on the guide rollers cannot be too large, otherwise the film will be damaged. However, when the wrap angle is small, it is difficult to achieve a long natural cooling distance for such films, resulting in the need to design a long natural cooling distance for the overall film production equipment, which affects the production efficiency when producing some thin films. SUMMARY

[0004] The technical problem to be solved by the present application is to solve at least one of the above technical problems.

[0005] The solution to the technical problem of the present application is:

[0006] A film conveying structure, comprising a fixed frame, a plurality of guide roller assemblies, a plurality of tensioning assemblies, an extension frame and a sliding frame, one end of the extension frame is hinged to the sliding frame, a guide rail is provided on the fixed frame, the height of the guide rail gradually decreases in the direction from the sliding frame to the fixed frame, the other end of the extension frame is placed on the guide rail and is in sliding connection with the guide rail, the sliding frame is arranged upstream of the fixed frame, the sliding frame can move in the direction of approaching or moving away from the fixed frame, a plurality of guide roller assemblies are respectively provided on the fixed frame and the extension frame, the guide roller assemblies are used for guiding the conveying of the film, the tensioning assemblies are arranged on the fixed frame, and the tensioning assemblies are used for tensioning the film.

[0007] As a further improvement of the above technical solution, the sliding frame comprises a track, a plurality of rollers, a base, a lifting mechanism and a lifting frame body, the rollers are in sliding fit connection with the track, all the rollers are arranged on the base, the rollers are used for supporting the base, the lifting mechanism is arranged on the base, the lifting frame body is arranged on the lifting mechanism, the lifting mechanism is used for adjusting the height of the lifting frame body, and the extension frame is hinged to the lifting frame body.

[0008] As a further improvement of the above technical solution, the tensioning assembly comprises an electric cylinder and a tensioning roller, the electric cylinder is arranged on the fixed frame, a movable part of the electric cylinder is connected to the tensioning roller, and the electric cylinder drives the tensioning roller to move up and down.

[0009] As a further improvement of the above technical solution, a pulley is arranged on the telescopic frame, and the pulley is in sliding fit connection with the guide rail.

[0010] The application further provides a film pressing device, which comprises a pressing machine and the film conveying structure.

[0011] As a further improvement of the above technical solution, the unwinding device comprises an unwinding frame, an upper unwinding roller and a lower unwinding roller, the unwinding frame is arranged between the fixed frame and the pressing machine, the upper unwinding roller is arranged on the unwinding frame and can rotate relative to the unwinding frame, the lower unwinding roller is arranged on the unwinding frame and can rotate relative to the unwinding frame, and a space between the upper unwinding roller and the lower unwinding roller is used for the film to pass through.

[0012] As a further improvement of the above technical solution, the pressing device further comprises a thickness measuring machine, the thickness measuring machine is arranged on the fixed frame, the thickness measuring machine is used for measuring the thickness of the film, the thickness measuring machine is arranged upstream of the unwinding device, and the tensioning assembly is arranged upstream and downstream of the thickness measuring machine.

[0013] As a further improvement of the above technical solution, the pressing device further comprises a slitting machine, the slitting machine is arranged between the unwinding device and the fixed frame, and the slitting machine is used for slitting the edges of the film.

[0014] As a further improvement of the above technical solution, the slitting machine comprises a slitting frame, a backing knife mechanism and a cutting knife mechanism, the slitting frame is arranged between the unwinding device and the fixed frame, the backing knife mechanism comprises a backing knife seat, a bottom knife roller and a bottom roller driving assembly, the backing knife seat is arranged on the slitting frame, the backing knife seat comprises a backing knife surface, the bottom knife roller is rotationally connected to the backing knife seat, one end of the bottom knife roller protrudes from the backing knife surface, and the bottom roller driving assembly drives the bottom knife roller to rotate, the cutting knife mechanism comprises a cutting knife driver and a film cutting knife, the cutting knife driver is arranged on the slitting frame, and the cutting knife driver is in driving connection with the film cutting knife to drive the film cutting knife to approach or move away from the backing knife surface.

[0015] As a further improvement of the above technical solution, the cutter mechanism further comprises a cutter width adjusting assembly and a cutter seat, the cutter driver and the film cutter are arranged on the cutter seat, and the cutter width adjusting assembly is used to adjust the position of the cutter seat in the transverse direction.

[0016] The film conveying structure of the present application has the following advantages: the plurality of guide roller sets are used to guide the conveying of the film, and the tensioning assembly is used to tension the film; when it is necessary to extend the natural cooling distance of the film, the sliding frame is moved away from the fixed frame, so that the telescopic frame is pulled out of the guide rail by the sliding frame; the user can use the guide roller assembly on the telescopic frame to guide the conveying of the film, thereby extending the conveying distance of the film and increasing the conveying distance for natural cooling of the film; when it is necessary to shorten the conveying distance of the film, the user can move the sliding frame towards the fixed frame, so that the telescopic frame is stored in the guide rail; therefore, when the film is being conveyed, the film no longer passes through the guide roller assembly on the telescopic frame, thereby shortening the travel distance of the film.

[0017] The film pressing device of the present application comprises a film conveying structure, a film unwinding device for unwinding a protective film, and a pressing machine, so that the film with an appropriate natural cooling distance can be conveyed to the pressing device for pressing. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly described below. Obviously, the described drawings are only some of the embodiments of the present application, but not all the embodiments, and those skilled in the art can obtain other design schemes and drawings from these drawings without creative labor.

[0019] Figure 1 is a side view of the film conveying structure of the present application;

[0020] Figure 2 is a side view of the film pressing device of the present application;

[0021] Figure 3 is an axonometric view of the film pressing device of the present application, in which the sliding frame is hidden;

[0022] Figure 4 is an axonometric view of the splitting machine of the present application;

[0023] Figure 5 is a front view of the splitting machine of the present application;

[0024] Figure 6 is a left view of the splitting machine of the present application; Figure 5

[0025] Figure 7 is a left view of the splitting machine of the present application;​Figure 6 a sectional view at B-B of Fig. 1;

[0026] Figure 8 a sectional view at A-A of Fig. 1. Figure 6 a sectional view at A-A of Fig. 1.

[0027] In the drawings: 01 - fixed frame, 02 - guide roller assembly, 03 - telescopic frame, 031 - pulley, 041 - lifting frame body, 042 - track, 043 - roller, 044 - base, 045 - lifting mechanism, 05 - guide rail, 06 - pressing machine, 071 - unwinding frame, 072 - upper unwinding wheel, 073 - lower unwinding wheel, 08 - thickness gauge, 09 - tensioning assembly, 1 - slitting frame, 200 - pad knife mechanism, 210 - pad knife seat, 220 - bottom knife wheel, 230 - bottom wheel driving assembly, 231 - bottom wheel driver, 232 - transmission shaft, 240 - pad plate, 251 - pad knife adjusting sliding rail, 252 - pad knife adjusting lead screw, 253 - pad knife supporting sliding rail, 300 - cutting knife mechanism, 310 - cutting knife driver, 320 - film cutting knife, 331 - cutting knife adjusting sliding rail, 332 - cutting knife adjusting lead screw, 340 - cutting knife seat, 410 - first transmission wheel, 420 - second transmission wheel, 430 - synchronous belt. DETAILED DESCRIPTION

[0028] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and drawings below, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, and other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor are within the scope of protection of the present application. In addition, all the coupling / connection relationships mentioned in the text do not mean that the components are directly connected, but that a better coupling structure can be formed by adding or reducing coupling accessories according to the specific implementation. The technical features in the present application can be combined interactively without mutual contradiction and conflict.

[0029] Reference Figures 1-8The utility model provides a film conveying structure, including fixed frame 01, a plurality of guide roller assembly 02, a plurality of tensioning assembly 09, telescopic frame 03 and sliding frame, one end of telescopic frame 03 is hinged with sliding frame, be equipped with guide rail 05 on fixed frame 01, the guide rail 05 gradually reduces in height along the direction of sliding frame to fixed frame 01, the other end of telescopic frame 03 is placed on guide rail 05 and is slidably connected with guide rail 05, the sliding frame is arranged in the upstream of fixed frame 01, the sliding frame can move in the direction of approaching or away from fixed frame 01, fixed frame 01 and telescopic frame 03 are equipped with a plurality of guide roller assembly 02 respectively, and the guide roller assembly 02 is used to guide the conveying of film, and tensioning assembly 09 is arranged on fixed frame 01, and the tensioning assembly 09 is used to tension film.

[0030] From above, a plurality of the guide roller group is used to guide the conveying of film, and tensioning assembly 09 is used to tension film, when needing to extend the natural cooling distance of film, the sliding frame can be moved away from fixed frame 01 when using, so that telescopic frame 03 is pulled out of guide rail 05 by sliding frame, and the user can use the guide roller assembly 02 on telescopic frame 03 to guide the conveying of film, so as to extend the conveying distance of film, increase the conveying distance of natural cooling of film, when needing to shorten the conveying distance of film, the user can move the sliding frame to the direction of fixed frame 01, so that telescopic frame 03 is stored on guide rail 05, so that the film does not pass through the guide roller assembly 02 on telescopic frame 03 when the user is wearing the film, and the travel of film is shortened.

[0031] In actual use, each guide roller assembly 02 includes two guide roller seats and a guide roller body, the two guide roller seats are arranged at two ends of the guide roller body respectively, and the guide roller seat is rotatably connected with the guide roller body, and the guide roller seat is used to be fixed on the fixed frame 01 or the telescopic frame 03.

[0032] In order to realize the function of the sliding frame, in some embodiments, the sliding frame comprises a track 042, a plurality of rollers 043, a base 044, a lifting mechanism 045 and a lifting frame body 041, the rollers 043 are in sliding fit connection with the track 042, all the rollers 043 are arranged on the base 044, the rollers 043 are used to support the base 044, the lifting mechanism 045 is arranged on the base 044, the lifting frame body 041 is arranged on the lifting mechanism 045, the lifting mechanism 045 is used to adjust the height of the lifting frame body 041, and the telescopic frame 03 is hinged to the lifting frame body 041. In use, the lifting frame body 041 can slide along the extension direction of the track 042 by using the sliding fit of the rollers 043 and the track 042, and in addition, the distance between the sliding frame and the track 042 can be adjusted by the arrangement of the lifting mechanism 045, so as to realize the adjustment of the height of the main body of the sliding frame, that is, the inclination angle of the telescopic frame 03 can be adjusted.

[0033] The lifting mechanism 045 comprises a screw rod which can rotate relative to the base 044, and a nut arranged on the screw rod, the nut is fixedly connected to the lifting frame body 041, and the screw rod and the nut form a screw-nut pair. Optionally, the number of the base 044 corresponds to the number of the rollers 043, preferably, four rollers 043 are arranged, and the four rollers 043 are respectively used to support four bottom corners of the lifting frame body 041.

[0034] In order to realize the tensioning of the film, in some embodiments, the tensioning assembly 09 comprises an electric cylinder and a tensioning roller, the electric cylinder is arranged on the fixed frame 01, the movable part of the electric cylinder is connected to the tensioning roller, and the electric cylinder drives the tensioning roller to move up and down. In use, the film is wound around the upper side or the lower side of the tensioning roller, the electric cylinder drives the tensioning roller to move up and down, so that the tensioning roller abuts against the film, and the distance of the movement of the tensioning roller driven by the electric cylinder determines the degree of tensioning of the film. Optionally, two electric cylinders are arranged, the two electric cylinders are respectively arranged at two ends of the tensioning roller, the two ends of the tensioning roller are rotatably connected to the movable parts of the electric cylinders, for example, by bearings, and the fixed parts of the electric cylinders are fixed on the fixed frame 01 by screws.

[0035] In order to make the telescopic frame 03 move more smoothly relative to the guide rail 05, in some embodiments, a pulley 031 is arranged on the telescopic frame 03, and the pulley 031 is in sliding fit connection with the guide rail 05. By the sliding fit of the pulley 031 and the guide rail 05, the relative movement between the telescopic frame 03 and the guide rail 05 is more smooth.

[0036] In addition, the guide rail 05 is further provided with limiting edges, the limiting edges are arranged in two, the pulley 031 is arranged between the two limiting edges, and the limiting edges are used to limit the position of the pulley 031.

[0037] The present application also provides a film laminating device, comprising a laminating machine 06, and the film conveying structure as described above, wherein the laminating machine 06 is arranged downstream of the film conveying of the fixed frame 01, and a film unwinding device is arranged between the laminating machine 06 and the fixed frame 01, and the film unwinding device is used to unwind the protective film, and the laminating machine 06 is used to laminate the protective film unwound by the film unwinding device to the film.

[0038] Since the above has been described in relation to the film conveying structure, those skilled in the art should be able to understand in the light of the description and the drawings, and therefore the film conveying structure will not be described here.

[0039] In some embodiments, the film unwinding device comprises an unwinding frame 071, an upper unwinding wheel 072 and a lower unwinding wheel 073, wherein the unwinding frame 071 is arranged between the fixed frame 01 and the laminating machine 06, the upper unwinding wheel 072 is arranged on the unwinding frame 071 and can rotate relative to the unwinding frame 071, the lower unwinding wheel 073 is arranged on the unwinding frame 071 and can rotate relative to the unwinding frame 071, and the space between the upper unwinding wheel 072 and the lower unwinding wheel 073 is used for the film to pass through. In use, the upper unwinding wheel 072 and the lower unwinding wheel 073 are provided with protective films, the film passes between the upper unwinding wheel 072 and the lower unwinding wheel 073, the protective film on the upper unwinding wheel 072 is used to cover the upper surface of the film, and the protective film on the lower unwinding wheel 073 is used to cover the lower surface of the film.

[0040] Optionally, two upper unwinding wheels 072 and two lower unwinding wheels 073 are arranged, when the protective film on one of the upper unwinding wheels 072 is used up, the user can immediately replace the other upper unwinding wheel 072 with a new protective film, and the upper unwinding wheel 072 with the used protective film is replaced with a new one. Similarly, when the protective film on one of the lower unwinding wheels 073 is used up, the user can replace the other lower unwinding wheel 073 with a new protective film, and the lower unwinding wheel 073 with the used protective film is replaced with a new one.

[0041] Further, in order to facilitate the user to replace the lower unwinding wheel 073, the fixed frame 01 comprises a fixed frame 01 main body and a trolley track, and an unwinding trolley, wherein the trolley track is arranged on the fixed frame 01 main body, the unwinding trolley is in sliding cooperation with the trolley track, and the lower unwinding wheel 073 is arranged on the unwinding trolley, so as to facilitate the user to pull out the unwinding trolley to add the protective film to the lower unwinding wheel 073. Preferably, the unwinding trolley and the lower unwinding wheel 073 are arranged one by one, i.e. one lower unwinding wheel 073 is arranged on each unwinding trolley.

[0042] In order to make the protective film to be well developed, the fixed frame 01 is further provided with a development roller, two development rollers are provided, and the two development rollers are respectively arranged downstream of the upper unwinding wheel 072 and downstream of the lower unwinding wheel 073, so that the protective film is first passed through the development roller when covering between the films. The development roller is relatively rotatable with the fixed frame 01, and a plurality of protruding ribs are arranged on the development roller, the protruding ribs extend along the axial direction of the development roller. In use, the protruding ribs abut against the surface of the protective film during the rotation of the development roller, and under the scraping action of the protruding ribs, the protective film is well developed, and the wrinkles of the protective film when covering the protective film are reduced. Optionally, the plurality of protruding ribs are arranged in a circumferential array around the axis of the development roller.

[0043] In order to make the film flow after casting, the thickness of the film is uniform, and in some embodiments, the pressing device further comprises a thickness gauge 08, the thickness gauge 08 is arranged on the fixed frame 01, the thickness gauge 08 is used to measure the thickness of the film, the thickness gauge 08 is arranged upstream of the unwinding device, and the tensioning assembly 09 is arranged upstream and downstream of the thickness gauge 08. In addition to being used to tension the film, the tensioning assembly 09 can also be used to stretch the film to a certain extent to ensure the uniformity of the thickness of the film. By arranging the tensioning assembly 09 upstream of the thickness gauge 08, the film can be tensioned first, and in addition, the film can be pre-stretched first. By measuring the stretched film with the thickness gauge 08, the thickness of the film can be determined, and whether to further stretch the film with the tensioning assembly 09 downstream of the thickness gauge 08 can be determined.

[0044] After the film is pressed, the edges of the film are generally not flat, and in some embodiments, the pressing device further comprises a slitting machine, the slitting machine is arranged between the unwinding device and the fixed frame 01, and the slitting machine is used to slit the edges of the film. In use, by arranging the slitting machine, the edges of the film can be slit.

[0045] In some embodiments, the slitting machine comprises a slitting frame 1, a pad knife mechanism 200 and a cutting knife mechanism 300; the slitting frame 1 is arranged between the unwinding device and the fixing frame 01; the pad knife mechanism 200 comprises a pad knife seat 210, a bottom knife wheel 220 and a bottom wheel driving assembly 230; the pad knife seat 210 is arranged on the slitting frame 1 and comprises a pad knife surface; the bottom knife wheel 220 is rotationally connected to the pad knife seat 210 and protrudes from the pad knife surface at one end; and the bottom wheel driving assembly 230 drives the rotation of the bottom knife wheel 220; the cutting knife mechanism 300 comprises a cutting knife driver 310 and a film cutting knife 320; the cutting knife driver 310 is arranged on the slitting frame 1 and is drivingly connected to the film cutting knife 320 to drive the film cutting knife 320 to move closer to or away from the pad knife surface. In use, the film is driven by an external power roller to move from upstream to downstream, passes between the film cutting knife 320 and the bottom knife wheel 220, is supported by the bottom knife wheel 220, and the cutting knife driver 310 drives the film cutting knife 320 to move towards the pad knife surface to complete the edge cutting of the film. In the pad knife mechanism 200 of the present embodiment, a pad plate 240 is further arranged on the pad knife seat 210, and the pad knife surface is the top surface of the pad plate 240. In the present embodiment, the bottom knife wheel 220 and the film cutting knife 320 cut the film in a shearing manner, and in terms of structural arrangement, the film cutting knife 320 is located outside the peripheral surface of the bottom knife wheel 220. When shearing the film, the shearing stress is large, and the present embodiment is particularly suitable for thick films. In the present embodiment, a film with a thickness of 0.3 mm or more, such as a film with a thickness of 0.5 mm or more, is referred to as a thick film.

[0046] In addition, the slitting machine can also comprise a disc knife and a motor, and the disc knife is driven to rotate by the motor to slit the film.

[0047] The bottom knife wheel 220 rotationally driven on the pad knife seat 210 can support the film during cutting, and on the other hand, the bottom knife wheel 220 is driven to rotate, so that the speed difference between the film and the bottom knife wheel 220 is small during cutting, which is beneficial to obtain a film with good surface quality. The linear speed of the bottom knife wheel 220 is most ideally synchronized with the linear speed of the film conveying, so as to minimize the friction between the bottom knife wheel 220 and the bottom surface of the film, better protect the appearance of the film, and support the film at the same time.

[0048] In order to enable the film trimming to cut off film edge material of different widths, in some embodiments, the cutter mechanism 300 further comprises a cutter width adjusting assembly and a cutter seat 340, the cutter driver 310 and the film cutter 320 are arranged on the cutter seat 340, and the cutter width adjusting assembly is used to adjust the position of the cutter seat 340 in the transverse direction. In this embodiment, the transverse direction refers to the width direction of the film. By configuring the cutter width adjusting assembly to drive the cutter seat 340 to move in the transverse direction, the transverse positions of the cutter driver 310 and the film cutter 320 mounted on the cutter seat 340 are changed, so that films of different widths can be cut.

[0049] The cutter width adjusting assembly comprises a cutter adjusting slide rail 331, a cutter adjusting lead screw 332, and a cutter adjusting nut. The cutter adjusting slide rail 331 is arranged on the frame, the cutter seat 340 slides along the cutter adjusting slide rail 331, the cutter adjusting lead screw 332 is rotatably arranged on the frame, the cutter adjusting nut is fixed on the cutter seat 340, and the cutter adjusting nut is in transmission connection with the cutter adjusting lead screw 332. In this way, when the cutter adjusting lead screw 332 rotates, the cutter adjusting lead screw 332 drives the cutter seat 340 to slide along the cutter adjusting slide rail 331 through the cutter adjusting nut, so as to adjust the transverse position of the cutter seat 340. The cutter width adjusting assembly adopts the lead screw nut mechanism for adjustment, which has the advantages of high adjustment accuracy and convenient adjustment. The driving of the cutter adjusting lead screw 332 can be realized by a rotary driver or by manual rotation. The rotary driver can be a stepper motor, a servo motor, a pneumatic motor, or any other device that can provide a rotating output shaft.

[0050] In order to maintain a proper distance between the bottom knife wheel 220 and the film cutter 320 to ensure the quality of film cutting, further, the pad cutter mechanism 200 further comprises a pad cutter width adjusting assembly, which is used to adjust the position of the pad cutter seat 210 in the transverse direction. The bottom knife wheel 220 and the pad cutter surface included in the pad cutter mechanism 200 are arranged on the pad cutter seat 210. When the pad cutter seat 210 is driven by the pad cutter width adjusting assembly to slide in the transverse direction, the position of the bottom knife wheel 220 changes accordingly, so that the bottom knife wheel 220 and the film cutter 320 maintain a proper distance.

[0051] The pad knife width adjusting assembly comprises a pad knife adjusting slide rail 251, a pad knife adjusting screw rod 252 and a pad knife adjusting nut. The pad knife adjusting slide rail 251 is arranged on the rack, the pad knife seat 210 slides along the pad knife adjusting slide rail 251, the pad knife adjusting screw rod 252 is rotatably arranged on the rack, the pad knife adjusting nut is fixed on the pad knife seat 210, and the pad knife adjusting nut is in transmission connection with the pad knife adjusting screw rod 252. In this way, when the pad knife adjusting screw rod 252 rotates, the pad knife adjusting screw rod 252 drives the pad knife seat 210 to slide along the pad knife adjusting slide rail 251 through the pad knife adjusting nut, so that the transverse position of the pad knife seat 210 is adjusted. The pad knife width adjusting assembly adopts the screw nut mechanism for adjustment, and has the advantages of high adjustment accuracy and convenient adjustment. The driving of the pad knife adjusting screw rod 252 can also be driven by a rotary driver or manually rotated.

[0052] Further, the bottom wheel driving assembly 230 comprises a bottom wheel driver 231 in transmission connection with the pad knife adjusting slide rail 251, and the bottom knife wheel 220 is sleeved outside the pad knife adjusting slide rail 251 and in transmission connection with the pad knife adjusting slide rail 251. The bottom wheel driver 231 is in transmission connection with the bottom knife wheel 220 through the pad knife adjusting slide rail 251. The pad knife adjusting slide rail 251 plays a guiding role as a slide rail of the pad knife seat 210, and also serves as a transmission shaft 232 of the bottom wheel driver 231 and the bottom knife wheel 220 to transmit the power of the bottom wheel driver 231 to the bottom knife wheel 220 to drive the bottom knife wheel 220 to rotate, thereby greatly simplifying the design of the pad knife mechanism 200. Especially when a plurality of pad knife mechanisms 200 are arranged, the bottom wheels included in the plurality of pad knife mechanisms 200 can be directly sleeved on the pad knife adjusting slide rail 251 to simultaneously realize the functions of transverse sliding and being driven to rotate. In the embodiment, the pad knife adjusting slide rail 251 is a spline shaft. The spline shaft has the advantages of high structural strength and high transmission efficiency. In addition, in the embodiment, the pad knife mechanism 200 further comprises a pad knife supporting slide rail 253, and the pad knife seat 210 is in sliding connection with the pad knife supporting slide rail 253. The pad knife supporting slide rail 253 further supports the pad knife seat 210, thereby improving the service life of the pad knife adjusting slide rail 251, i.e., the transmission shaft 232.

[0053] In order to conveniently adjust the transverse positions of the cutting knife mechanism 300 and the pad knife mechanism 200 at the same time, the film trimming device further comprises a synchronous adjusting mechanism for synchronously adjusting the movements of the pad knife width adjusting assembly and the cutting knife width adjusting assembly.

[0054] The synchronous adjusting mechanism comprises a first transmission wheel 410, a second transmission wheel 420 and a synchronous belt 430. The first transmission wheel 410 is in transmission connection with the cutter adjusting lead screw 332, the second transmission wheel 420 is in transmission connection with the pad cutter adjusting lead screw 252, and the synchronous belt 430 is in transmission connection with the first transmission wheel 410 and the second transmission wheel 420. Thus, the cutter adjusting lead screw 332 and the pad cutter adjusting lead screw 252 are in transmission connection through the first transmission wheel 410, the second transmission wheel 420 and the synchronous belt 430. Thus, rotating one of the cutter adjusting lead screw 332 and the pad cutter adjusting lead screw 252 can simultaneously drive the film cutter 320 and the bottom cutter wheel 220 to move horizontally. It can be understood that, when it is required to ensure that the moving speed and direction of the film cutter 320 and the bottom cutter wheel 220 are consistent, the outer diameters of the first transmission wheel 410 and the second transmission wheel 420 should be the same, and the rotation directions of the cutter adjusting lead screw 332 and the pad cutter adjusting lead screw 252 should be consistent. In the embodiment, the first transmission wheel 410, the second transmission wheel 420 and the synchronous belt 430 are respectively a chain wheel, a chain wheel and a chain, that is, the first transmission wheel 410, the second transmission wheel 420 and the synchronous belt 430 are in transmission connection through the chain. The transmission through the chain has the advantages of flexible arrangement, convenient installation and low material cost. In other embodiments, the first transmission wheel 410, the second transmission wheel 420 and the synchronous belt 430 can also be in synchronous transmission through a belt wheel or the like. The synchronous adjusting mechanism in the embodiment is also provided with a handle. The handle is in transmission connection with the cutter adjusting lead screw 332. The position of the film cutter 320 and the bottom cutter wheel 220 is adjusted by manually driving the handle to rotate the cutter adjusting lead screw 332, so as to adjust the width of the film material.

[0055] Further, the combination of the pad cutter mechanism 200, the cutter mechanism 300 and the synchronous adjusting mechanism is a trimming group. The number of the trimming groups is at least two, and in each trimming group: each pad cutter mechanism 200 shares one bottom wheel driver 231 and one pad cutter adjusting sliding rail 251, and each cutter mechanism 300 shares one cutter adjusting sliding rail 331. In the embodiment, the pad cutter mechanism 200 and the cutter mechanism 300 are both provided with two, and the number of the corresponding trimming groups is two. The two trimming groups are used to trim the two sides of the film, so that the edges of the two sides of the film are more neat. In other embodiments, the number of the trimming groups can also be three or more, so that the film material can be cut into n+1 pieces according to the need, where n refers to the number of the trimming groups.

[0056] The preferred embodiments of the application are specifically described above, but the application is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the application.

Claims

1. A film conveying structure comprising a fixed frame (01), characterized in that, It also includes a plurality of guide roller assemblies (02), a plurality of tensioning assemblies (09), a telescopic frame (03), and a sliding frame. One end of the telescopic frame (03) is hinged to the sliding frame. The fixed frame (01) is provided with a guide rail (05) that gradually decreases in height in the direction of the sliding frame towards the fixed frame (01). The other end of the telescopic frame (03) is placed on and slidably connected to the guide rail (05). The sliding frame is arranged upstream of the fixed frame (01) and can move towards or away from the fixed frame (01). The fixed frame (01) and the telescopic frame (03) are each provided with a plurality of guide roller assemblies (02) for guiding the transport of the film. The tensioning assembly (09) is arranged on the fixed frame (01) and is used to tension the film. The sliding frame includes a track (042), rollers (043), a base (044), a lifting mechanism (045), and a lifting frame body (041). The rollers (043) are arranged in multiple sets and are slidably connected to the track (042). All of the rollers (043) are arranged on the base (044) and are used to support the base (044). The lifting mechanism (045) is arranged on the base (044), and the lifting frame body (041) is arranged on the lifting mechanism (045). The lifting mechanism (045) is used to adjust the height of the lifting frame body (041). The telescopic frame (03) is hinged to the lifting frame body (041). The tensioning assembly (09) includes an electric cylinder and a tensioning roller. The electric cylinder is arranged on the fixed frame (01), and the movable part of the electric cylinder is connected to the tensioning roller. The electric cylinder drives the tensioning roller to move up and down. The telescopic frame (03) is provided with a pulley (031) that is slidably connected to the guide rail (05).

2. A film lamination apparatus comprising a laminator (06), characterized in that, The film conveying structure also includes a pressing machine (06) arranged downstream of the film conveying of the fixed frame (01). A unwinding device is arranged between the pressing machine (06) and the fixed frame (01). The unwinding device is used to unwind a protective film. The pressing machine (06) is used to press the protective film unwound by the unwinding device onto the film.

3. The film lamination apparatus according to claim 2, wherein The unwinding device includes: an unwinding frame (071) arranged between the fixed frame (01) and the pressing machine (06); an upper unwinding wheel (072) arranged on the unwinding frame (071) and rotatable relative to the unwinding frame (071); A lower unwinding wheel (073) is arranged on the unwinding frame (071), and the lower unwinding wheel (073) is rotatable relative to the unwinding frame (071). A space between the upper unwinding wheel (072) and the lower unwinding wheel (073) is used for the film to pass through.

4. The film lamination apparatus according to claim 3, wherein The film laminating device further comprises a thickness gauge (08) arranged on the fixed frame (01). The thickness gauge (08) is used for measuring the thickness of the film. The thickness gauge (08) is arranged upstream of the unwinding device. The tensioning assembly (09) is arranged upstream and downstream of the thickness gauge (08).

5. The film lamination apparatus according to claim 3, wherein The film laminating device further comprises a slitting machine arranged between the unwinding device and the fixed frame (01). The slitting machine is used for slitting the edges of the film.

6. The film lamination apparatus according to claim 5, wherein The slitting machine comprises a slitting frame (1) arranged between the unwinding device and the fixed frame (01). A pad knife mechanism (200) comprises a pad knife seat (210), a bottom knife wheel (220), and a bottom wheel driving assembly (230). The pad knife seat (210) is arranged on the slitting frame (1). The pad knife seat (210) comprises a pad knife surface. The bottom knife wheel (220) is rotatably connected to the pad knife seat (210). One end of the bottom knife wheel (220) protrudes from the pad knife surface. The bottom wheel driving assembly (230) drives the bottom knife wheel (220) to rotate. A cutting knife mechanism (300) comprises a cutting knife driver (310) and a film cutting knife (320). The cutting knife driver (310) is arranged on the slitting frame (1). The cutting knife driver (310) is drivingly connected to the film cutting knife (320) to drive the film cutting knife (320) to approach or move away from the pad knife surface.

7. The film lamination apparatus according to claim 6, wherein The cutting knife mechanism (300) further comprises a cutting knife width adjusting assembly and a cutting knife seat (340). The cutting knife driver (310) and the film cutting knife (320) are arranged on the cutting knife seat (340). The cutting knife width adjusting assembly is used for adjusting the position of the cutting knife seat (340) in the transverse direction.

Images