CN207595356U - Screen display laminating machine - Google Patents

Abstract

The utility model relates to a screen display sticking film machine, it includes: the film rolling device comprises a case, a film supplying device, a movable feeding device, a front film rolling device, an upper film rolling device, a lower film rolling device and two opposite side film rolling devices, wherein the film supplying device, the movable feeding device, the front film rolling device, the upper film rolling device and the lower film rolling device are arranged on the case. The movable feeding device is positioned on the front side of the film supply device, the front film rolling device is positioned on the rear side of the film supply device, the upper film rolling device is positioned above the film supply device, the lower film rolling device is positioned below the film supply device, and the side film rolling device is positioned on the side of the film supply device. The film supply device comprises an installation plate, a vacuum suction plate installed on the installation plate, a lower film folding manipulator installed on the vacuum suction plate, two side film folding manipulators and a plurality of vacuum nozzles, wherein the lower film folding manipulator and the lower film rolling device are oppositely arranged, and the side film folding manipulator and the side film rolling device are oppositely arranged. The screen display sticking film machine realizes film mechanization, avoids instability of manual film sticking, and is good in film sticking effect, high in efficiency and very practical.

Description

Screen display laminating machine

technical field

The utility model relates to the technical field of film pasting, in particular to a screen display film pasting machine.

Background technique

With the continuous development of society and the continuous maturity of technology, all-in-one computers have become more and more popular due to their portability, multi-function and practicality. However, with the enrichment of the functions of the all-in-one computer, problems also follow. The computer screen display is easily scratched or scratched, resulting in a large screen, which is inconvenient to use. For this reason, the screen display must be protected by a film. Moreover, due to the integrated design of the computer all-in-one machine, there are many parts to accommodate, resulting in its appearance being thicker than the general display and forming a curved shape. Such film processing is generally carried out manually, and the film effect cannot be guaranteed and the film is low in efficiency. Increase productivity.

Utility model content

Based on this, it is necessary to provide a screen display film laminating machine with good film pasting effect and high efficiency aiming at the problems existing in film pasting of computer integrated screen display.

A screen display film laminating machine, comprising: a chassis, a film supply device installed on the chassis, a mobile feeding device, a front film rolling device, an upper film rolling device, a lower film rolling device, and two side rollers arranged oppositely film device; the mobile feeding device is located at the front side of the film supply device, the front rolling film device is located at the rear side of the film supply device, and the upper rolling film device is located above the film supply device, The lower rolling film device is located below the film supply device, and the side rolling film device is located on the side of the film supply device; the film supply device includes a mounting plate, a vacuum suction device mounted on the mounting plate plate, the lower film folding manipulator installed on the vacuum suction plate, two side folding film manipulators and a number of vacuum nozzles, the lower film folding manipulator is set opposite to the lower film rolling device, and the side folding film manipulator The manipulator is set opposite to the side rolling film device; the front rolling film device includes a support seat, two traversing film rolling mechanisms and a driving motor installed on the support seat, and the traversing film rolling mechanism is connected to the Drive motor connection.

The above-mentioned screen display laminating machine includes a chassis, a film feeding device installed on the chassis, a mobile feeding device, a front film rolling device, an upper film rolling device, a lower film rolling device, and two side film rolling devices arranged oppositely. At the same time, the vacuum nozzle is connected to the air pipe, and each device is connected to the controller. When in use, manually place the protective film on the vacuum suction plate for adsorption and positioning and tear off the release paper, place the all-in-one computer on the mobile feeding device, and press the start button. The all-in-one computer aligns the protective film with the driving of the mobile feeding device, the front rolling film device is activated to attach a part of the protective film to the screen display, and then the upper film rolling device is driven to bend and roll the upper side of the protective film to cover the screen on the top edge of the display. The lower folding film manipulator of the film supply device bends the lower edge of the protective film, and then rolls it on the lower edge of the screen display by the lower rolling film device. Afterwards, the side folding film manipulator of the film feeding device bends the side edge of the protective film, and then presses it on the side edge of the screen display by the side rolling film device, completing the whole film sticking process, and finally removes the sticking film on the mobile feeding device. Good all-in-one computer. The screen display film laminating machine realizes mechanized film laminating processing through the mutual cooperation of film feeding device, mobile feeding device, front film rolling device, upper film rolling device, lower film rolling device, and two opposite side rolling film devices. It avoids the influence of artificial film sticking due to different proficiency levels. The film sticking effect is good, the efficiency is high, and it is very practical.

In one of the embodiments, the lower-folding film manipulator includes a lower-folding film seat, a lower-folding film cylinder installed on the lower-folding film seat, and a lower-folding film arm slidably installed on the lower-folding film seat , the lower folding film cylinder is connected with the lower folding film arm.

In one of the embodiments, the side folding film manipulator includes a side folding film seat, a side folding film cylinder installed on the side folding film seat, and a side folding film arm slidingly installed on the side folding film seat , the side folding film cylinder is connected with the side folding film arm.

In one of the embodiments, the mobile feeding device includes a base, a drive mechanism mounted on the X-axis, a drive mechanism of the Y-axis mounted on the drive mechanism of the X-axis, a drive mechanism mounted on the drive mechanism of the Y-axis A Z-axis driving mechanism, a placement platform installed on the Z-axis driving mechanism, two positioning cylinders and a limit frame installed on the placement platform, the positioning cylinder is arranged opposite to the limit frame.

In one of the embodiments, the upper rolling film device includes two support frames, a screw drive membrane set mounted on the support frame, a beam mounted on the screw drive module, a beam mounted on the The upper film rolling cylinder on the crossbeam and the upper film rolling roller slidably installed on the crossbeam, the upper film rolling roller is connected with the upper film rolling cylinder.

In one of the embodiments, the upper film rolling device further includes two film trimming cylinders slidably arranged on the beam, and film trimming rollers installed on the film trimming cylinders.

In one of the embodiments, the lower rolling film device includes a hanging plate, a jacking cylinder installed on the hanging plate, a sliding seat slid on the hanging plate, and a pendulum hinged on the sliding seat. arm, the lower rolling film roller installed on the swing arm, and the jacking cylinder is connected with the sliding seat.

In one of the embodiments, the rolling film device includes a mounting base, a forward cylinder mounted on the mounting base, a support frame slid on the mounting base and connected to the forward cylinder, a mounting A side roll film cylinder on the support frame, a side roll film roller installed on the side roll film cylinder.

In one of the embodiments, the side rolling film device further includes a secondary rolling cylinder installed on the support frame, a support arm slid on the support frame, two An auxiliary cylinder, an auxiliary roller mounted on the auxiliary cylinder, and the secondary rolling cylinder is connected with the support arm.

In one of the embodiments, the traversing film rolling mechanism includes a sliding plate slid on the support base, a longitudinal cylinder installed on the sliding plate, and a front rolling film slid on the sliding plate. Roller, the longitudinal cylinder is connected with the front rolling film roller.

Description of drawings

Fig. 1 is the schematic diagram of screen display lamination machine of a preferred embodiment of the present utility model;

Fig. 2 is the schematic diagram of the film feeding device in the screen display film laminating machine shown in Fig. 1;

Fig. 3 is a schematic diagram of the mobile feeding device in the screen display film laminating machine shown in Fig. 1;

Fig. 4 is a schematic diagram of the front rolling film device in the screen display film laminating machine shown in Fig. 1;

Fig. 5 is a schematic diagram of the upper rolling film device in the screen display film laminating machine shown in Fig. 1;

Fig. 6 is the schematic diagram of the lower film roll device in the adhesive film of the screen display shown in Fig. 1;

Fig. 7 is a schematic diagram of another perspective in the lower rolling film device shown in Fig. 6;

Fig. 8 is a schematic diagram of the side rolling film device in the screen display film laminating machine shown in Fig. 1;

Fig. 9 is a schematic diagram of another perspective of the side rolling film device shown in Fig. 8;

Notes on drawings:

100-screen display film mounter, 20-chassis, 30-film supply device, 31-installation plate, 32-vacuum suction plate, 33-bottom folding film manipulator, 34-side folding film manipulator, 35-vacuum nozzle, 331- Lower folding film seat, 332-down torture cylinder, 333-lower folding film arm, 341-side folding film seat, 342-side folding film cylinder, 343-side folding film arm, 40-mobile feeding device, 41-base, 42-X-axis driving mechanism, 43-Y-axis driving mechanism, 44-Z-axis driving mechanism, 45-placement platform, 46-positioning cylinder, 47-limiting frame, 50-front rolling film device, 51-support seat, 52 -Transverse film rolling mechanism, 53-Drive motor, 54-Sliding plate, 55-Longitudinal cylinder, 56-Front rolling film roller, 57-Timing belt, 60-Upper film rolling device, 61-Support frame, 62-Screw rod Drive module, 63-beam, 64-upper rolling film cylinder, 65-upper rolling film roller, 66-filming cylinder, 67-filming roller, 70-bottom rolling device, 71-hanging plate, 72-telescopic cylinder , 73-sliding seat, 74-swing arm, 75-lower rolling film roller, 76-tension spring fixed column, 80-side rolling film device, 81-mounting seat, 82-forward push cylinder, 83-support frame, 84- Side rolling film cylinder, 85-side rolling film roller, 86-secondary rolling cylinder, 87-support arm, 88-auxiliary cylinder, 89-auxiliary roller.

Detailed ways

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model.

Please refer to FIG. 1 to FIG. 9, which are a screen display film laminating machine 100 according to a preferred embodiment of the present invention. The screen display film laminating machine 100 includes a chassis 20, a film supply device 30 installed on the chassis 20, and a mobile feeding device 40. , front rolling film device 50, upper rolling film device 60, lower rolling film device 70, and two side rolling film devices 80 that are arranged oppositely, the cabinet protective cover can be installed correspondingly on the cabinet 20, and the film feeding device 30, mobile feeding Device 40, front rolling film device 50, upper rolling film device 60, lower rolling film device 70, side rolling film device 80 are protected. The mobile feeding device 40 is located on the front side of the film supply device 30, the front roll film device 50 is located on the rear side of the film supply device 30, the upper roll film device 60 is located on the top of the film supply device 30, and the lower roll film device 70 is located on the film supply device 30 , the side rolling film device 80 is located on the side of the film supply device 30 .

Referring to Fig. 2, the film feeding device 30 includes a mounting plate 31 connected to the cabinet 20, a vacuum suction plate 32 mounted on the mounting plate 31, a film folding manipulator 33 mounted on the vacuum suction plate 32, two side folding The film manipulator 34 and several vacuum nozzles 35, the lower film folding manipulator 33 are arranged opposite to the lower film rolling device 70, and the side film folding manipulator 34 is arranged opposite to the side rolling film device 80. The vacuum nozzle 35 is connected with the vacuum pipe, and the vacuum suction plate 32 is controlled by the vacuum pipe to achieve vacuum adsorption. Wherein the lower folding film manipulator 33 comprises the lower folding film seat 331, the lower folding film cylinder 332 installed on the lower folding film seat 331, and the lower folding film arm 333 slidingly installed on the lower folding film seat 331, and the lower folding film cylinder 332 It is connected with the lower folding film arm 333. The side-folding film manipulator 34 comprises a side-folding film seat 341, a side-folding film cylinder 342 installed on the side-folding film seat 341, and a side-folding film arm 343 slidably installed on the side-folding film seat 341, and the side-folding film cylinder 342 and The side flap arms 343 are attached. When working, the protective film is vacuum sucked by the vacuum suction plate 32, the lower folding film cylinder 332 drives the lower folding film arm 333 to push forward, and the lower side of the protective film is bent 90° close to the lower side of the screen display, and the side folding film cylinder 342 drives The side folding film arm 343 is pushed forward, and the side edge of the protective film is bent 90° close to the side edge of the screen display.

Referring to Fig. 3, the mobile feeding device 40 includes a base 41, an X-axis driving mechanism 42, a Y-axis driving mechanism 43 installed on the X-axis driving mechanism 42, and a Z-axis driving mechanism installed on the Y-axis driving mechanism 43. Mechanism, the placement platform 45 installed on the Z-axis drive mechanism 44, two positioning cylinders 46 and the limit frame 47 installed on the placement platform 45, the positioning cylinder 46 is arranged opposite to the limit frame 47. When in use, place the all-in-one computer on the placement platform 45, press the start button, two positioning cylinders 46 fix the base of the all-in-one computer at the same time, and the Y-axis drive mechanism 42 moves to a distance of 0.2-0.5 from the vacuum suction plate 32. Stop at mm, the X-axis driving mechanism 41 moves to the symmetrical position between the left and right sides of the screen display and the protective film, and stops when the Z-axis driving mechanism 44 moves to make the lower edge of the screen display of the all-in-one computer parallel to the lower edge of the protective film and stop when it is higher than the distance from one end , so as to move to the preset position for the next step of film processing. Through precise alignment, it is ensured that the follow-up film sticking in each direction is installed with predetermined settings, avoiding the influence of uncertain factors and improving the quality of film sticking.

Referring to Fig. 4, the front rolling film device 50 includes a support base 51, two laterally moving film rolling mechanisms 52 and a driving motor 53 installed on the supporting base 51, and the laterally moving film rolling mechanism 52 is connected with the driving motor 53, specifically The traversing film rolling mechanism 52 is slidably disposed on the slide rail of the support base 51 . The laterally moving film rolling mechanism 52 protects the sliding plate 54 slidably located on the support seat 51, the longitudinal cylinder 55 installed on the sliding plate 54, the front rolling film roller 56 slidingly located on the sliding plate 54, the longitudinal cylinder 55 and the front rolling film The rollers 56 are connected, and in order to drive the drive motor 53 to drive the traversing rolling film mechanism 52 to move universally, a synchronous belt 57 is installed on the drive motor 53, and the synchronous belt 57 is connected with the sliding plate 54. The initial position of the film rolling mechanism 52 is in the middle of the support seat 51. When film rolling processing is required, the front film rolling roller 56 on the right stretches out to press the protective film under the action of the longitudinal cylinder 55, and drives the motor Under the action of 53, move from the center to the right to roll the right half of the protective film flat. When the front rolling film roller 56 rolls to the right film 20-80mm, the other front rolling film roller 56 moves to the right by 20-80mm under the action of the drive motor 53, and the front rolling film roller 56 stretches under the action of the longitudinal cylinder 55. Go out and press the protective film to the left and start rolling until the rolling is completed, after which the two front rolling film rollers 56 retract back to the initial position simultaneously.

Referring to Fig. 5, the upper rolling film device 60 includes two support frames 61, a screw drive module 62 installed on the support frame 61, a beam 63 installed on the screw drive module 62, and a beam 63 installed on the beam 63. The last film rolling cylinder 64, the film rolling roller 65 that is slidably installed on the crossbeam 63, the film rolling wheel 65 is connected with the film rolling cylinder 64. In order to improve the film sticking effect, the upper film rolling device 60 also includes two film-management cylinders 66 slidably arranged on the beam 63, and a film-manager roller 67 installed on the film-management cylinder 66. shift. The upper film rolling device 60 is initially located 5 to 200 mm behind the vacuum suction plate 32. After the front film rolling device 50 completes the process, the upper film rolling cylinder 64 drives the upper film rolling roller 65 to extend downward and the screw drive module 62 to move forward. Move, roll the protective film to the edge along the top of the screen display, and then the upper film rolling cylinder 64 drives the upper film rolling roller 65 to continue to stretch down and roll down the protective film along the curved surface of the back of the screen display. The screw drive module 62 continues to move forward by 20-200 mm, the upper film rolling cylinder 64 resets, the film-striking cylinder 66 on both sides drives the film-striking roller 67 to extend downward, and moves 80-200 mm along the beam 63 to the middle, and the screw rod The driving module 62 moves backward to make the film-trimming roller 67 stick flat to the back of the screen display, and then moves to the left and right respectively to roll the two ends of the protective film flat.

Referring to Figures 6 and 7, the lower rolling film device 70 includes a hanging plate 71, a jacking cylinder 72 mounted on the hanging plate 71, a sliding seat 73 slidably arranged on the hanging plate 71, and a sliding seat 73 hinged on the sliding seat 73. Swing arm 74, the lower rolling film roller 75 that is installed on the swing arm, top extension cylinder 72 are connected with sliding seat 73. In another embodiment, a tension spring fixing column 76 is respectively installed on both sides of the swing arm 75. The tension spring fixing column 76 is convenient for installing a tension spring. Roll the protective film. The initial position of the lower rolling film device 70 is at a distance of 5 to 30 mm from the mobile feeding device 40. After the lower film folding manipulator 33 bends the lower side of the protective film, the telescopic cylinder 72 extends upward, and the swing arm 74 takes the lower rolling film roller 75 to move The lower edge of the protective film is rolled upwards along the lower corner of the screen display, and the telescopic cylinder 72 shrinks and resets after completing the rolling.

8 and 9, the side rolling film device 80 includes a mounting base 81, a forward cylinder 82 mounted on the mounting base 81, a support frame 83 slidingly arranged on the mounting base 81 and connected to the forward cylinder 82, The side rolling film cylinder 84 installed on the support frame 83, the side rolling film roller 85 installed on the side rolling film cylinder 84, the side rolling film cylinder 84 can drive the side rolling film roller 85 to move. Further, the side rolling film device 80 also includes a secondary rolling cylinder 86 mounted on the support frame 83, a support arm 87 slid on the support frame 83, two auxiliary cylinders 88 mounted on the support arm 87, a mounting On the auxiliary roller 89 on the auxiliary cylinder 88, the secondary rolling cylinder 86 is connected with the support arm 87. When not working, the two side rolling film devices 80 are located on the left and right sides of the film supply device 30, and are in a retracted state. After the side folding film manipulator 34 completes the side bending of the protective film, push the cylinder 82 forward Stretch out, the side rolling film cylinder 84 drives the side rolling film roller 85 to stretch out from the sides of the rolling protective film on both sides to make it stick on the side edge of the screen display, and then the side rolling film cylinder 84 retracts. The auxiliary cylinder 88 drives the auxiliary roller 89 to stretch out, and under the drive of the secondary rolling cylinder 86, rolls from the 50-100mm of the two ends of the protective film side to the two ends, flattens the two ends of the film and resets, and completes the entire film application. process.

The above-mentioned screen display laminating machine 100 includes a casing 20, a film feeding device 30 installed on the casing 20, a mobile feeding device 40, a front rolling film device 50, an upper rolling film device 60, a lower rolling film device 70, and a relatively arranged Two side rolling film devices 80, when installed, the vacuum nozzle 35 is connected to the trachea, and each device is connected with the controller. During use, the protective film is manually placed on the vacuum suction plate 32 for adsorption and positioning and the release paper is torn off, the all-in-one computer is placed on the placement platform 45 of the mobile feeding device 40 and positioned by the positioning cylinder 46, and press start up button. The all-in-one computer is driven by the X-axis drive mechanism 42, the Y-axis drive mechanism 43, and the Z-axis drive mechanism 44 of the mobile feeding device 40 to align the protective film, and the front rolling film device 50 is activated to attach a part of the protective film to the screen display. Afterwards, the upper film rolling device 60 is driven to bend and roll the upper edge of the protective film onto the upper edge of the screen display. The lower folding film manipulator 33 of the film supply device 30 bends the lower edge of the protective film and rolls it on the lower edge of the screen display by the lower rolling film device 70 . Afterwards, the side folding film manipulator 34 of the film feeding device 30 bends the side of the protective film and presses it on the side edge of the screen display by the side rolling film device 80 to complete the whole film sticking process, and finally move the feeding device 40 Remove the all-in-one computer with the film attached. The screen display film laminating machine 100 cooperates with the film supply device 30, the mobile feeding device 40, the front rolling film device 50, the upper rolling film device 60, the lower rolling film device 70, and the two side rolling film devices 80 arranged oppositely. Film application realizes mechanized film application processing, which avoids the influence of artificial film application due to different proficiency levels. The film application effect is good, the efficiency is high, and it is very practical.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A screen display laminating machine is characterized in that it comprises: a casing, a film feeding device installed on the casing, a mobile feeding device, a front rolling film device, an upper rolling film device, a lower rolling film device, and a relative Two side roll film devices are provided; the mobile feeding device is located at the front side of the film supply device, the front roll film device is located at the rear side of the film supply device, and the upper roll film device is located at the Above the film supply device, the lower rolling film device is located below the film supply device, and the side rolling film device is located on the side of the film supply device; the film supply device includes a mounting plate, installed on the The vacuum suction plate on the mounting plate, the lower film folding manipulator installed on the vacuum suction plate, two side folding film manipulators and a number of vacuum nozzles, the lower film folding manipulator is opposite to the lower film rolling device , the side-folding film manipulator is arranged opposite to the side rolling film device; the front rolling film device includes a support base, two laterally moving film rolling mechanisms and a driving motor installed on the support base, and the lateral movement The rolling film mechanism is connected with the drive motor. 2. The screen display film laminating machine according to claim 1, wherein the lower folding film manipulator includes a lower folding film seat, a lower folding film cylinder installed on the lower folding film seat, and a film folding cylinder that is slidably mounted on the lower folding film seat. The lower folding film arm on the lower folding film seat, the lower folding film cylinder is connected with the lower folding film arm. 3. The screen display film laminating machine according to claim 2, wherein the side-folding film manipulator includes a side-folding film seat, a side-folding film cylinder installed on the side-folding film seat, and a side-folding film cylinder that is slidably mounted on the side-folding film seat. The side folding film arm on the side folding film seat, the side folding film cylinder is connected with the side folding film arm. 4. The screen display film laminating machine according to claim 1, wherein the mobile feeding device comprises a base, an X-axis driving mechanism, a Y-axis driving mechanism installed on the X-axis driving mechanism, and a Y-axis driving mechanism installed on the X-axis driving mechanism. The Z-axis drive mechanism on the Y-axis drive mechanism, the placement platform installed on the Z-axis drive mechanism, the two positioning cylinders and the limit frame installed on the placement platform, the positioning cylinder and the limit frame Bitbox relative settings. 5. The screen display film laminating machine according to claim 1, characterized in that, the upper rolling film device comprises two support frames, a screw driven film group mounted on the support frame, a film set mounted on the screw rod The crossbeam on the drive module, the upper film rolling cylinder installed on the crossbeam, and the upper film rolling roller slidingly installed on the crossbeam, the upper film rolling roller is connected with the upper film rolling cylinder. 6. The film laminating machine for screen displays according to claim 5, wherein the upper film rolling device also includes two film management cylinders slidably arranged on the beam, and a film management cylinder installed on the film management cylinders. film roller. 7. The screen display film laminating machine according to claim 1, wherein the lower rolling film device comprises a hanging plate, a top-extending cylinder installed on the hanging plate, and a sliding cylinder slidably arranged on the hanging plate. Seat, the swing arm hinged on the sliding seat, the lower rolling film roller installed on the swing arm, the top stretching cylinder is connected with the sliding seat. 8. The screen display film laminating machine according to claim 1, wherein the side rolling film device comprises a mounting base, a forward cylinder mounted on the mounting base, slidingly arranged on the mounting base and connected to the mounting base. The support frame connected to the forward push cylinder, the side rolling film cylinder installed on the support frame, and the side rolling film roller installed on the side rolling film cylinder. 9. The screen display film laminating machine according to claim 8, wherein the side rolling film device also includes a secondary rolling cylinder mounted on the support frame, a support slidingly arranged on the support frame arm, two auxiliary cylinders installed on the support arm, auxiliary rollers installed on the auxiliary cylinder, and the secondary rolling cylinder is connected with the support arm. 10. The film laminating machine for screen displays according to claim 1, wherein the film rolling mechanism includes a slide plate slid on the support seat, a longitudinal cylinder mounted on the slide plate, a slide The front rolling film roller arranged on the sliding plate, the longitudinal cylinder is connected with the front rolling film roller.