Plastic hollow plate on-line film covering device and film covering system

Abstract

The utility model provides an on-line film covering device for a plastic hollow plate. The on-line film covering device comprises a rack; the extrusion composite module comprises a pair of extrusion rollers which are arranged up and down, and the aluminum film entering the space between the extrusion rollers is pressed to the upper and lower surfaces of the plastic hollow plate; the three-dimensional film supply module comprises an upper film supply module and a lower film supply module which are located above and below the extrusion composite module respectively, the upper film supply module comprises an upper film roll adjusting support and an upper carrier roller adjusting support which are used for installing an upper film roll and an upper carrier roller respectively, and the lower film supply module comprises a lower film roll adjusting support and a lower carrier roller adjusting support which are used for installing an upper carrier roller respectively. The lower film roll and the lower carrier roller are respectively mounted; and the lead-in module comprises a pair of arc-shaped guide rollers which are arranged up and down, are arranged at the front ends of the extrusion rollers and are used for spreading the aluminum film. Synchronous film covering of the two faces of the hollow plate is achieved, folding marks are avoided, and the bubble rate is extremely low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hollow plate film processing equipment, in particular to a plastic hollow plate online film coating device and film coating system. BACKGROUND

[0002] Plastic hollow plates are widely used in many fields such as construction, packaging, advertising, etc. due to their excellent properties. In order to expand the application of hollow plates, aluminum or aluminum film will be bonded to the surface of the hollow plate:

[0003] The surface of the aluminum-coated plastic hollow plate has a metallic luster and significantly improved reflectivity, which can be used in applications requiring high reflectivity, such as reflective materials, billboards, etc. The aluminum-coated plastic hollow plate can also be used as a material for building exterior walls and roofs to reduce indoor temperature and improve the thermal insulation performance of buildings. Aluminum plating usually requires a professional aluminum film machine, which has the characteristics of high cost and complex process, and has high requirements for the substrate.

[0004] The plastic hollow plate with bonded aluminum film has good high-temperature resistance and moisture resistance, and its process is simpler and less costly than aluminum plating, and the equipment requirements are lower. The process of bonding aluminum film to the hollow plate requires a film laminating machine, which mainly consists of a heating device, a film pressing device, and a conveying device. The aluminum film is automatically attached to the surface of the hollow plate, and then heated to bond the two. The traditional film laminating machine has the following defects: single-sided film coating requires secondary processing, resulting in low efficiency and insufficient precision; straight-line guide rollers are used to convey the aluminum film, resulting in uneven film tension and creases; vacuum suction is used to remove bubbles, increasing cost and energy consumption, and is not suitable for heterogeneous substrates.

[0005] Therefore, it is necessary to improve the prior art. SUMMARY

[0006] The present application provides a plastic hollow plate online film laminating machine to solve the above problems.

[0007] One of the technical solutions adopted by the present application is to provide a plastic hollow plate online film laminating device, comprising:

[0008] A rack and an extrusion composite module, the extrusion composite module is arranged on the rack, and comprises a pair of upper and lower extrusion rollers for pressing the aluminum film entering between the extrusion rollers to the upper and lower surfaces of the plastic hollow plate;

[0009] A three-dimensional film supply module, comprising an upper film supply module and a lower film supply module, the upper film supply module and the lower film supply module are integrated on the rack or arranged independently of the rack, the upper film supply module comprises an upper film roll adjusting bracket and an upper godet adjusting bracket for mounting the upper film roll and the upper godet respectively, and the lower film supply module comprises a lower film roll adjusting bracket and a lower godet adjusting bracket for mounting the lower film roll and the lower godet respectively;

[0010] The import module comprises a pair of arc-shaped guide rollers arranged above and below and is arranged at the front end of the extrusion roller through a guide roller mounting frame, used for spreading the aluminum film, so that the aluminum film is spread before contacting the hollow plate, reducing the transverse shrinkage and eliminating the creases and bubbles.

[0011] Further, a pressure adjusting device is arranged between the upper extrusion roller and the frame, used for adapting to hollow plates with different thicknesses.

[0012] Further, the upper film roll adjusting support comprises a pair of support bottom plates, the support bottom plates are provided with adjusting slide rails, side mounting frames are slidingly arranged on the adjusting slide rails, the relative positions of the two side mounting frames are adjusted to adapt to upper film rolls with different sizes, and the lower film roll adjusting support is arranged in the same way as the upper film roll adjusting support.

[0013] Further, a clutch and a magnetic powder brake coaxial with the upper film roll are further arranged on one of the side mounting frames, used for tension control.

[0014] Further, heating elements are embedded in the arc-shaped guide rollers, used for preheating and softening the aluminum film, improving the lamination effect of the aluminum film and the hollow plate.

[0015] Another technical solution of the present application is to provide a plastic hollow plate online film coating system, comprising a traction machine, a stress relief warming box, the online film coating device and a cooling plate rack, the hollow plate with residual heat from the stress relief warming box enters the extrusion composite module, is laminated with two layers of aluminum film and then goes to the cooling plate rack.

[0016] Further, a temperature detection device is arranged between the stress relief warming box and the import module, ensuring that the hollow plate enters the extrusion composite module at a suitable temperature.

[0017] The plastic hollow plate online film coating device and the film coating system have the following beneficial effects:

[0018] 1. The three-dimensional film supply module is designed, high and low double module rolls are used for film supply, synchronous film coating of two surfaces of the hollow plate is realized, the problem of low efficiency and poor precision caused by secondary processing of single-sided film coating is solved, and the film tension is guaranteed to be uniform through gravity auxiliary tensioning.

[0019] 2. The arc-shaped guide roller is used for spreading the aluminum film, the film path is controlled, the film coating has no creases, and the bubble rate is extremely low. DETAILED DESCRIPTION

[0020] Figure 1 is a front view of the plastic hollow plate online film coating device according to the first embodiment of the present application;

[0021] Figure 2is a side view of a plastic hollow plate on-line film coating device according to the first embodiment of the present application;

[0022] The labels of the components in the drawings are as follows: 1, frame, 2, extrusion roller, 3, upper film roll adjusting support, 4, upper film roll, 5, upper idler roller adjusting support, 6, upper idler roller, 7, arc-shaped guide roller, 8, hollow plate, 9, aluminum film, 31, support bottom plate, 32, adjusting slide rail, 33, side mounting bracket, 34, clutch, 35, magnetic powder brake. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application will be described in detail below with reference to the drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined.

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "horizontal", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and cannot indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] Please refer to Figure 1 and Figure 2 , the first embodiment of the present application provides a plastic hollow plate on-line film coating machine, comprising:

[0026] The frame 1 and the extrusion composite module are arranged on the frame 1, which comprises a pair of upper and lower extrusion rollers 2, which are used to press the aluminum film 9 entering between the extrusion rollers 2 to the upper and lower surfaces of the plastic hollow plate 8, and a pressure adjusting device is further arranged between the upper extrusion roller 2 and the frame 1, which is used to adapt to hollow plates 8 of different thicknesses;

[0027] The three-dimensional film supply module comprises an upper film supply module and a lower film supply module, the upper film supply module is integrated on the frame 1, and the lower film supply module is arranged independently of the frame 1, the upper film supply module comprises an upper film roll adjusting support 3 and an upper idler roller adjusting support 5, which are respectively used to install an upper film roll 4 and an upper idler roller 6, and the lower film supply module comprises a lower film roll adjusting support and a lower idler roller adjusting support, which are respectively used to install a lower film roll and a lower idler roller;

[0028] The guide module comprises a pair of upper and lower arc-shaped guide rollers 7, which are arranged at the front end of the extrusion roller 2 through a guide roller mounting bracket, and are used to spread the aluminum film 9, so that the aluminum film 9 is spread out before contacting the hollow plate 8, reducing the transverse shrinkage, and eliminating creases and bubbles.

[0029] Specifically, the upper film supply module and the lower film supply module are usually arranged in a one standby one mode. When the upper film roll is used up, the standby upper film roll is introduced to continue the film covering, and at the same time, the replacement of the upper film roll is completed.

[0030] The upper and lower film roll adjusting supports are arranged as follows:

[0031] The upper film roll adjusting support 3 comprises a pair of support plates 31, the support plates 31 are provided with adjusting slide rails 32, the side mounting frames 33 are slidably arranged on the adjusting slide rails 32, the two ends of the upper film roll shaft are arranged on the side mounting frames 33 and are rotationally connected, and the relative positions of the two side mounting frames 33 are adjusted to adapt to upper film rolls of different sizes.

[0032] The side mounting frame 33 on the right side is further provided with a clutch 34 coaxial with the upper film roll and a magnetic powder brake 35 for tension control. The right end of the upper film roll shaft is connected with the clutch 34, and the clutch 34 is arranged between the shaft and the magnetic powder brake 35. The clutch 34 is connected or disconnected to transmit power.

[0033] The lower film roll adjusting support is arranged in the same way as the upper film roll adjusting support 3.

[0034] The arc-shaped guide rollers 7 are arranged as follows:

[0035] The curvature radius of the arc-shaped guide rollers 7 arranged on the upper side is arranged between 300-800mm, and the curvature radius of the arc-shaped guide rollers 7 arranged on the lower side is arranged between 400-1000mm. A silica gel layer can also be arranged on the surface of the arc-shaped guide rollers 7.

[0036] A line array CCD detector is arranged at the rear end of the extrusion composite module for real-time detection of the film covering quality to make timely adjustment.

[0037] The operation process of a plastic hollow plate 8 online film laminating machine:

[0038] The upper film roll and the lower film roll are installed on the upper and lower film roll adjusting supports, and the positions are adjusted and locked (the side mounting frame 33 has a locking mechanism).

[0039] The aluminum film 9 is passed through the corresponding supporting rollers and the arc-shaped guide rollers 7 and is adhered to the upper and lower surfaces of the hollow plate 8.

[0040] The clutch 34 is closed, the extrusion roller 2 is pressed, and the magnetic powder brake 35 is adjusted to control the tension of the aluminum film 9.

[0041] The arc position of the arc-shaped guide roller 7 is adjusted until there are no wrinkles and bubbles in the film covering.

[0042] The first embodiment of the present application also provides an online film covering system for the plastic hollow plate 8, comprising a traction machine, a stress relief warming box, the online film covering device and a cooling plate rack, the hollow plate 8 with residual heat from the stress relief warming box enters the extrusion composite module, and after being combined with the two layers of aluminum film 9, goes to the cooling plate rack;

[0043] The temperature detection device is further arranged between the stress relief warming box and the leading-in module, so that the plate temperature of the hollow plate 8 is about 80 DEG C, and the film covering temperature after entering the extrusion composite module is about 60 DEG C.

[0044] In the second embodiment of the present application, the heating element is further embedded in the inside of the arc-shaped guide roller, the aluminum film is preheated and softened, and the combination effect of the aluminum film and the hollow plate is improved, and the rest of the design is the same as the first embodiment.

[0045] The plastic hollow plate online film covering device and film covering system have the following beneficial effects:

[0046] 1. The three-dimensional film supply module is designed, the high and low double-mold film supply is adopted, the synchronous film covering of the two surfaces of the hollow plate is realized, the problem of low efficiency and poor precision caused by the secondary processing of single-sided film covering is solved, and the tension is assisted by gravity to ensure the uniform tension of the film.

[0047] 2. The arc-shaped guide roller is used to spread the aluminum film, the film path is controlled, the film covering has no creases, and the bubble rate is extremely low.

[0048] The above is only the embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent flow transformation by using the content of the specification and the drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. An on-line film coating apparatus for plastic hollow plates, characterized by The application relates to a plastic hollow plate online film coating device. The device comprises a rack and an extrusion composite module arranged on the rack, the extrusion composite module comprises a pair of upper and lower extrusion rollers arranged in a vertical mode and used for pressing aluminum film into the upper and lower surfaces of a plastic hollow plate; The device further comprises a three-dimensional film supply module, which comprises an upper film supply module and a lower film supply module, the upper film supply module and the lower film supply module are integrated on the rack or arranged independently of the rack, the upper film supply module comprises an upper film roll adjusting support and an upper supporting roller adjusting support, and the upper film roll adjusting support and the upper supporting roller adjusting support are respectively used for mounting an upper film roll and an upper supporting roller; the lower film supply module comprises a lower film roll adjusting support and a lower supporting roller adjusting support, and the lower film roll adjusting support and the lower supporting roller adjusting support are respectively used for mounting a lower film roll and a lower supporting roller; The device further comprises a guide module, which comprises a pair of arc-shaped guide rollers arranged in a vertical mode and arranged at the front end of the extrusion rollers through a guide roller mounting frame and used for spreading the aluminum film.

2. The online film laminating device for plastic hollow plates according to claim 1, characterized in that, The upper extrusion roller is arranged between the rack and a pressure adjusting device.

3. The apparatus according to claim 1, wherein The upper film roll adjusting support comprises a pair of support bottom plates, the support bottom plates are provided with adjusting sliding rails, the adjusting sliding rails are slidably provided with side mounting frames, and the lower film roll adjusting support is arranged in the same mode as the upper film roll adjusting support.

4. The apparatus according to claim 3, wherein One of the side mounting frames is further provided with a clutch coaxial with the upper film roll and a magnetic powder brake, which are used for tension control.

5. The apparatus according to any one of claims 1 to 4, wherein The curvature radius of the arc-shaped guide roller is controlled to be 300-1000 mm.

6. The apparatus according to claim 5, wherein The arc-shaped guide roller is further embedded with a heating element, which is used for preheating and softening the aluminum film.

7. An online film coating system for plastic hollow boards, characterized by The device comprises a traction machine, a stress relief warming box, the plastic hollow plate online film coating device and a cooling plate rack, the hollow plate with residual heat from the stress relief warming box enters the extrusion composite module, is combined with two layers of aluminum film and then goes to the cooling plate rack. The device further comprises a temperature detecting device arranged between the stress relief warming box and the guide module.

8. The online film coating system for plastic hollow plates according to claim 7, characterized in that, ​

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