CN112477093A

CN112477093A - Film pasting equipment and film pasting method

Info

Publication number: CN112477093A
Application number: CN201910865516.5A
Authority: CN
Inventors: 张锡强; 汤金慧; 范剑峰; 吴小军; 董开开
Original assignee: Chengdu Tuomi Shuangdu Photoelectric Co ltd
Current assignee: Chengdu Tuomi Shuangdu Photoelectric Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2021-03-12
Anticipated expiration: 2039-09-12
Also published as: CN112477093B

Abstract

The invention relates to a film pasting device and a film pasting method for an inner surface of a U-shaped glass of a smart device, wherein the U-shaped glass is provided with a first screen, a second screen and a first arc-shaped bent part. The film sticking equipment comprises: a jig seat (20) for positioning the U-shaped glass; a film clamping device (30) configured to clamp and tension a film assembly (10) having a protective layer and a conformable film; a stripping device (40) configured to strip the protective layer from the film assembly; and a bonding device (60) configured to bond the non-protective layer bonding film to the inner surface of the U-shaped glass as the protective layer is peeled off, the bonding device including a bonding roller (61) configured to press the non-protective layer bonding film onto the inner surface of the U-shaped glass, and the bonding roller being movable along the inner surface of the U-shaped glass. Thereby, a reliable film attachment of the inner surface of the U-shaped glass can be achieved.

Description

Film pasting equipment and film pasting method

Technical Field

The invention relates to the field of intelligent equipment, in particular to the field of smart phones, and more particularly relates to a film pasting device and a film pasting method for pasting a film on the inner surface of U-shaped glass of the intelligent equipment.

Background

Technological progress and innovation of smart devices are changing day by day, especially for smart phones. In recent years, the screen of a smartphone has been developed from an early 2D screen to a 2.5D screen and a 3D screen. Research and development of 4D screens and commercial applications are continuously advancing. Various screen technologies can be applied to not only smart phones, but also other smart devices such as tablet computers, palmtop computers, smart wearable devices, and the like.

For the known 2.5D screens and 3D screens of smart devices, they are realized in production manufacturing from 2.5D glass and 3D glass. Generally, for 2.5D glass and 3D glass, the profiling silica gel is directly utilized to attach the glass in a vacuum environment, so that the glass is well protected. The contoured silica gel itself is costly. In addition, the protection measures need to be realized in a vacuum environment, and the vacuumizing process means higher equipment cost and running cost. Furthermore, this protection requires a large application space, which is difficult to satisfy or even nonexistent for 4D glass.

Disclosure of Invention

The invention aims to provide a film pasting device and a film pasting method for pasting the inner surface of U-shaped glass of a smart device, and therefore reliable film pasting of the inner surface of the U-shaped glass can be achieved.

According to a first aspect of the present invention, a film laminating apparatus is proposed for laminating an inner surface of a U-shaped glass of a smart device, wherein the U-shaped glass has a first screen and a second screen and a first arc-shaped bent portion connecting the first screen and the second screen, the film laminating apparatus comprising:

a jig seat for positioning the U-shaped glass;

a film clamping device configured to clamp and tension a film assembly, wherein the film assembly has a protective layer and an adhesive film to be adhered to an inner surface of the U-shaped glass;

a stripping device configured to strip the protective layer from the film assembly; and

a laminating device configured to laminate a non-protective layer laminating film to the inner surface of the U-shaped glass as the protective layer is peeled off, wherein the laminating device comprises a laminating roller configured to press the non-protective layer laminating film onto the inner surface of the U-shaped glass, and the laminating roller is movable along the inner surface of the U-shaped glass.

According to the technical scheme of the invention, each film pasting process can be reliably and orderly realized through each device of the film pasting equipment, so that the film pasting on the inner surface of the U-shaped glass in the narrow inner cavity of the U-shaped glass can be reliably realized.

The production of laminating bubbles can be reduced in the process of rolling lamination by utilizing the laminating roller, so that the laminating yield is improved. Furthermore, the use of a copying silicone rubber can be dispensed with, which is advantageous in terms of both material costs and equipment costs.

Along the development of the screen technology of the intelligent device, the U-shaped glass in the meaning of the invention can be understood as 4D glass.

In some embodiments, the first screen may have a greater length than the second screen, and thus the first screen may also be referred to as a primary screen and the second screen may also be referred to as a secondary screen. Accordingly, one side of the receiving portion of the jig base may have a greater length than the other side. It is also possible that the first screen and the second screen may have substantially equal lengths.

In some embodiments, the first screen may have a second arcuate bend on its free end, the second arcuate bend being inwardly curved and having a lesser curvature than the first arcuate bend. Correspondingly, one edge of the receiving part of the jig base can be provided with a corresponding arc-shaped bent part for receiving the second arc-shaped bent part of the U-shaped glass.

In some embodiments, the film assembly may further comprise a carrier layer to which the conformable film is attached on its side facing away from the protective layer, and the film clamping device is configured for clamping the carrier layer.

In some embodiments, the jig base may include a plurality of jig base parts, at least one of which is a movable part, the jig base forming a receiving portion for receiving the U-shaped glass in a state where the U-shaped glass is positioned in the jig base.

In some embodiments, the receptacle may have a contour that conforms to a U-shaped glass.

In some embodiments, the jig base may comprise two jig base parts, the interface of the two jig base parts being in one side of the U-shape of the jig base.

In some embodiments, the film clamping device may have a pair of film clamping jaws, wherein at least one film clamping jaw is a movable part.

In some embodiments, the clamping jaws may each have a plurality of locating pins configured for insertion into corresponding locating holes of the diaphragm assembly.

In some embodiments, at least one film clamping jaw can be driven uniaxially or biaxially, wherein the film clamping device comprises a uniaxial or biaxial first drive system for a single film clamping jaw.

In some embodiments, the first drive system may include a first mount, a first shaft translatable with respect to the first mount in a first direction, and a first drive configured to drive the first shaft in translational movement with respect to the first mount in the first direction.

In some embodiments, the film clamping claw may be disposed in an end region of the first shaft.

In some embodiments, the first drive system may include a second drive, the first mount being guidable and drivable by the second drive and being translationally movable in a second direction relative to the second drive. Preferably, the second direction is perpendicular to the first direction.

In some embodiments, the stripping device may include a holder for holding an end region of the protective layer of the membrane module.

In some embodiments, the gripper may be provided on a second support that is capable of being driven either uniaxially or biaxially by a second drive system.

In some embodiments, the second mount may have a body and a cantilever extending from the body, the holder being disposed on a free end of the cantilever.

In some embodiments, the second drive system may include a second shaft and a third drive capable of driving translational movement of the second mount in a third direction along the second shaft.

In some embodiments, the second drive system may include a fourth drive, the second mount being guidable and drivable by the fourth drive and being translationally movable in a fourth direction relative to the fourth drive. Preferably, the fourth direction is perpendicular to the third direction.

In some embodiments, the laminating device may include a first support in which the laminating roller is rotatably mounted, the first support being drivable.

In some embodiments, the first support may have an elbow region, and the applying rollers may be 1 in number and installed in the elbow region of the first support.

In some embodiments, the conformable device may include a third drive system, and the first support may be driven uniaxially or biaxially by the third drive system.

In some embodiments, the third drive system may include a third shaft and a fifth drive capable of driving translational movement of the first carriage along the third shaft in a fifth direction.

In some embodiments, the third drive system may comprise a third mount guided for translational movement on the third shaft and a sixth drive mounted on the third mount, and the first mount may be guided and driven by the sixth drive and may be movable in translation relative to the sixth drive in a sixth direction. Preferably, the sixth direction is perpendicular to the fifth direction.

In some embodiments, the film laminating apparatus may further comprise a guide device having at least one guide roller configured to contact the protective layer of the film assembly.

In some embodiments, the guide device may include a second bracket in which the guide roller is rotatably installed, and a fourth driving system for driving the second bracket.

In some embodiments, the fourth drive system may comprise a seventh drive configured for translatably guiding and driving the second carriage.

In some embodiments, the second bracket may have an elbow region, and the guide rollers may be 2 in number and installed in the elbow region of the second bracket.

In some embodiments, the film sticking apparatus includes a frame on which at least one of the film clamping device, the film peeling device, the sticking device, and the guide device may be mounted.

In some implementations, the smart device may be a smartphone.

In some embodiments, the film application apparatus is configured for applying film application at ambient pressure. The evacuation process can be omitted, which is advantageous in terms of both equipment and operating costs, and the equipment operating time can be saved and the production efficiency can be increased.

According to a second aspect of the present invention, a film laminating method for laminating an inner surface of a U-shaped glass of a smart device, wherein the U-shaped glass has a first screen and a second screen and a first arc-shaped bent portion connecting the first screen and the second screen, is proposed, the film laminating method comprising the steps of:

positioning the U-shaped glass in a jig seat;

clamping a membrane assembly and tensioning the membrane assembly, wherein the membrane assembly has a protective layer and a conformable membrane to be conformed to the inner surface of the U-shaped glass;

stripping the protective layer from the film assembly; and

and adhering the protective layer-free adhesive film to the inner surface of the U-shaped glass along with the peeling of the protective layer, wherein the protective layer-free adhesive film is pressed onto the inner surface of the U-shaped glass by using an adhering roller, and the adhering roller moves along the inner surface of the U-shaped glass.

The film laminating method according to the present invention can realize that the protective layer is peeled while the protective layer is peeled, and the two operations can be performed in cooperation with each other.

In some embodiments, the film sticking method according to the second aspect of the present invention may be carried out using the film sticking apparatus according to the first aspect of the present invention.

In some embodiments, the first screen has a greater length than the second screen and the first screen has a second arcuate bend on its free end, wherein the second arcuate bend is inwardly curved and has a lesser curvature than the first arcuate bend, wherein the step of "positioning the U-shaped glass in the jig base" can be performed such that the U-shaped glass is flat lying and the second screen is above the first screen.

In some embodiments, the application of the conformable film to the inner surface of the U-shaped glass using the application roller may be performed in the following order of application:

laminating the film from a starting point towards a first folding point, wherein the starting point is located in a flat area of the inner surface of the first screen, and the first folding point is located near the tail end of the second arc-shaped bent part;

then, returning the laminating roller from the turning point to the starting point;

then, pasting a film on the inner surface of the first screen from the starting point to the direction of the first arc-shaped bending part until the film pasting on the inner surface of the first screen is finished;

then, film pasting is carried out on the inner surface of the first arc-shaped bent portion, wherein the pasting roller is guided to the transition portion of the first arc-shaped bent portion and the second screen from the transition portion of the first arc-shaped bent portion and the first screen, interpolation control is carried out on the motion track of the pasting roller, so that the pasting roller keeps pressing the pasting film against the inner surface of the first arc-shaped bent portion until the film pasting of the inner surface of the first arc-shaped bent portion is finished; and is

And finally, pasting the inner surface of the second screen, wherein the pasting roller moves towards the free end part of the second screen on the inner surface of the second screen until the pasting of the inner surface of the second screen is finished.

In some embodiments, the clamping of the membrane assembly may be controlled such that the tension of the membrane assembly is maintained within a predetermined tension range.

In some embodiments, the membrane assembly may be directed such that the non-protective layer conformable membrane remains out of contact with the inner surface of the U-shaped glass prior to conforming to the inner surface of the U-shaped glass.

Finally, it is to be pointed out that the individual features mentioned in the present application can be combined with one another as desired, provided that they are not mutually inconsistent. All technically feasible combinations of features are the technical content contained in the present application.

Drawings

The invention will be further explained and explained with reference to the drawings in connection with specific embodiments. The schematic drawings are briefly described as follows:

FIG. 1 is a perspective view of a U-shaped glass for a smart device;

FIG. 2 is a plan view of a membrane module;

fig. 3A and 3B are perspective views of a jig base in an open state and a closed state;

FIG. 4 is a schematic view of the overall arrangement of a film laminating apparatus;

FIG. 5A is a schematic view for describing the operation of a film sandwiching device;

FIG. 5B is a schematic view of a drive system for the film clamping device;

FIG. 6A is a schematic view for describing the operation of a film peeling apparatus;

FIG. 6B is a perspective view of the stripping device according to FIG. 6A;

FIG. 7 is a perspective view of a doubler;

FIG. 8 is a perspective view of a guide;

fig. 9 is a schematic diagram for describing a film attaching process; and is

Fig. 10 is a perspective view of a jig base in a closed state according to another embodiment.

Detailed Description

Fig. 1 is a perspective view of a U-shaped glass 1 for a smart device, such as a smart phone. Along the development of the screen technology of the intelligent device, the U-shaped glass 1 can be understood as 4D glass. The U-shaped glass 1 has a first screen 2 and a second screen 3 and a first arc-shaped bend 4 connecting the first screen with the second screen. As an alternative, the first screen 2 may have a second arc-shaped bend 5 on its free end, the second arc-shaped bend 5 being bent inwards and may have a greater, the same or a smaller curvature than the first arc-shaped bend 4. The first screen and the second screen may have the same or different lengths. As shown in fig. 1, the first screen 2 has a greater length than the second screen 3. The U-shaped glass 1 has an outer surface 6 and an inner surface 7. In order to protect the U-shaped glass 1, a film may be applied to the inner surface 7 of the U-shaped glass. The first screen and the second screen may in particular be flat.

Fig. 2 is a plan view of a membrane module 10 that may be used in a film application to the inner surface 7 of the U-shaped glass 1. The membrane module 10 has a protective layer 11 and a bonding film 12 to be bonded to the inner surface of the U-shaped pane, and a carrier layer 13, the bonding film 12 being attached to the carrier layer 13 on its side facing away from the protective layer 11. The conformable film 12 may be, for example, a TSP film, an explosion proof film, a Decofilm, or other flexible film. The adhesive film 12 may be a single-layer film or a composite film including a plurality of layers. These layers may have the same or different functions and may have the same or different compositions. The protective layer 11 is attached to the attachment film 12 and is peeled off from the attachment film 12 at the time of attachment, so that the attachment surface of the attachment film 12 is exposed. A row of positioning holes 14 can be provided on each side of the carrier layer 13, whereby a reliable clamping and tensioning of the membrane module 10 or the carrier layer 13 by means of a membrane clamping device 30, which will be described below, can be achieved.

In the embodiment shown in fig. 2, a single membrane module 10 may be applied to the membrane of a single U-shaped glazing 1. However, it is also possible to realize a plurality of membrane modules on a common carrier layer 13, each for the lamination of a single U-shaped pane 1, the lamination films 12 and the protective layers 11 of the individual membrane modules being arranged as membrane units one after the other on the common carrier layer 13.

If the adhesive film 12 itself has suitable load-bearing capacity, the separate load-bearing layer 13 can also be dispensed with, or the load-bearing layer 13 can be replaced by a further protective layer without load-bearing capacity.

Fig. 3A and 3B are perspective views of a jig base 20 for positioning the U-shaped glass 1 in an open state and a closed state. The jig base 20 may be provided on a table 23, the table 23 being only partially depicted in fig. 3A and 3B so that the jig base 20 itself can be more clearly described. The jig base 20 comprises two

jig base parts

21, 22, the interface 24 of which is in one side of the U-shape of the jig base, wherein the jig base part 21 is fixed on the table 23 and the jig base part 22 is a movable part. When positioning the U-shaped glass 1, the jig base part 22 may be first removed, then the U-shaped glass 1 is placed on the jig base part 21 (as shown in fig. 3A), and finally the jig base part 22 is folded toward the jig base part 21 (as shown in fig. 3B). The tool holder 20 forms a receptacle for receiving the U-shaped glass 1 in the closed state, which receptacle can have a contour corresponding to the U-shaped glass 1. The U-shaped glass can be held in the receptacle of the tool holder in a form-fitting or force-fitting manner. Alternatively or additionally, it is particularly advantageous if, for a good fixation of the U-shaped glass 1 in the tool holder 20, for example the tool holder part 21, can be provided with a vacuum suction device in order to keep the U-shaped glass sucked into the tool holder during the lamination. Although not depicted in the drawings, it goes without saying that a corresponding driver may be provided for the movement of the jig base member 21.

As an alternative or in addition to the embodiment shown in fig. 3A and 3B, it is also possible, for example, for: the jig base is provided with more than 3 jig base parts; all the jig seat parts are movable parts; the jig base is not transversely split but longitudinally split; the jig base member 22 is not translationally movable but invertedly movable; the jig base 20 is not in full contact with the U-shaped glass but in contact on a plurality of partial surfaces; the tool holder 20 itself is not positioned horizontally but obliquely with respect to the horizontal plane, for example, the table top of the table 23 may be provided with a pivoting mechanism by which the tool holder 20 can be placed in a desired inclination. However, if a constant tilt angle of the jig base 20 is desired, the jig base 20 itself may be designed to provide such a tilt angle without providing the jig base 20 with a pivot mechanism. An alternative embodiment of the jig base will be described below with reference to fig. 10.

Fig. 4 is a schematic view of the overall arrangement of a film laminating apparatus 100 configured for laminating the inner surface 7 of the U-shaped glass 1 of a smart device. The illustrated film laminating apparatus 100 includes:

a jig base 20 for positioning the U-shaped glass 1;

a clamping device 30 configured to clamp the membrane assembly 10 and tension the membrane assembly 10;

a peeling device 40 configured to peel the protective layer 11 from the film assembly 10;

as an option, a guide 50 configured for guiding the film assembly 10 and/or for guiding the peeled protective layer 11 of the film assembly 10; and

a bonding device 60 configured to bond the protective layer-peeled bonding film 12 to the inner surface 7 of the U-shaped glass 1 as the protective layer 11 is peeled; and

as an alternative to the frame 70, the film clamping device, the film stripping device, the application device and the guide device may be mounted on the frame.

The film deposition apparatus 100 may be configured for performing film deposition at ambient pressure, in other words, the film deposition apparatus 100 may not have to perform film deposition in a vacuum environment, which is cost-effective. It goes without saying that the film laminating apparatus 100 as shown in fig. 4 may also be installed in a vacuum environment if it is desired to carry out the film lamination in a vacuum environment.

The arrangement and relative positions of the individual modules of the film laminating apparatus shown in fig. 4 are exemplary, and they can be adjusted and rearranged according to actual needs. For example, the guide 50 may be mounted on the ground instead of being suspended from the frame 70. The attaching means 60 may be installed on the ground as well.

Fig. 5A is a schematic diagram for describing the operating principle of a film clamping device, and fig. 5B is a schematic diagram of a first driving system for the film clamping device. Such a film clamping device can be applied to a film laminating apparatus 100 as shown in fig. 4. The illustrated clamping arrangement 30 has pairs of clamping jaws 31 each having an array of locating pins 32 configured for insertion into corresponding locating holes 14 of the membrane assembly 10 so that the membrane assembly 10 can be clamped and tensioned. Each gripper jaw 31 may be integrated into a two-axis first drive system 33 as shown in fig. 5B. The first drive system 33 comprises a first support 36, a first shaft 34 and a first drive 35, the first shaft 34 being movable in translation in a first direction X1 with respect to the first support 36, and the first drive 35 being configured for driving the first shaft 34 in translation in a first direction X1 with respect to the first support 36. The film clamping claw 31 may be arranged in an end region of the first shaft 34. The first drive system 33 also comprises a second actuator 37, the first support 36 being guided and driven by the second actuator 37 and being movable in translation relative to the second actuator 37 in a second direction Z1, the second direction Z1 being perpendicular to the first direction X1.

In the embodiment shown in fig. 4, the first direction X1 corresponds to the longitudinal direction X of the film application apparatus, and the second direction corresponds to the vertical direction Z of the film application apparatus; tensioning and displacement of the membrane module 10 in the longitudinal direction X can be achieved by means of a controlled first drive 35 by means of a pair of clamping jaws 31 and a pair of first drive systems 33; by means of a controlled second drive 37, lifting of the membrane module 10 can be achieved.

In a further embodiment, the film clamping device can have only one single film clamping claw and a corresponding first drive system, wherein a plurality of film elements are wound as a continuous web on a reel, wherein a predetermined restoring force of the web in the unwinding direction is achieved by means of a coil spring. After the application of one U-shaped glass is completed and before the application of the next U-shaped glass is started, the roll is subjected to a cutting operation.

Fig. 6A is a schematic diagram for describing the operating principle of a film stripping device, and fig. 6B is a perspective view of the film stripping device according to fig. 6A, which can be used in the film laminating apparatus 100 according to fig. 4. The stripping device 40 comprises a gripper 41 for gripping an end region of the protective layer 11 of the film assembly 10, which gripper may be arranged on a second support 42, which can be driven biaxially by a second drive system. The second support 42 has a body 42a and a cantilever 42b extending therefrom, the holder 41 being arranged on a free end of the cantilever 42 b. The second drive system comprises a second shaft 44 and a third drive 45 and a fourth drive 43, the third drive 45 being able to drive the second support 42 in translation along the second shaft 44 in a third direction X2, and the second support 42 being guided and driven by the fourth drive 43 and being able to move in translation in a fourth direction Z2 with respect to the fourth drive 43. The fourth direction Z2 is perpendicular to the third direction X2.

In the embodiment shown in fig. 4, the third direction X2 corresponds to the longitudinal direction X of the film sticking apparatus, and the fourth direction Z2 corresponds to the vertical direction Z of the film sticking apparatus. By means of a controlled biaxial second drive system, various desired movement trajectories of the gripper 41 can advantageously be achieved.

Fig. 7 is a perspective view of a laminating apparatus that may be used in the laminating device 100 described in fig. 4. The laminating device 60 comprises a first support 62 having an elbow region 62a, in which a single laminating roller 61 is rotatably mounted. The application roller 61 is configured to press the application film 12 from which the protective layer 11 is torn off onto the inner surface 7 of the U-shaped glass 1, and the application roller 61 is movable along the inner surface 7 of the U-shaped glass 1. The laminating device 60 includes a third drive system by which the first support 62 can be driven biaxially. The third drive system comprises a third shaft 64 and a fifth drive 65 able to drive the first carriage 62 in translation along the third shaft 64 in a fifth direction X3. The third drive system also comprises a third mount 66 and a sixth drive 63, the third mount 66 being guided in a translatory manner on the third shaft 64, the sixth drive 63 being mounted on the third mount 66, and the first carriage 62 being guided and driven by the sixth drive 63 and being movable in a translatory manner in a sixth direction Z3 relative to the sixth drive 63. The sixth direction Z3 is perpendicular to the fifth direction X3.

In the embodiment shown in fig. 4, the fifth direction X3 corresponds to the longitudinal direction X of the film sticking apparatus, and the sixth direction Z3 corresponds to the vertical direction Z of the film sticking apparatus. By means of a controlled third drive system, it is possible to achieve a movement of the application roller 61 according to a desired, predetermined movement trajectory.

In the embodiment of the laminating apparatus 60 shown in fig. 7, only one single laminating roller 61 is provided. However, it is also possible to provide two adjacent application rollers, wherein one preceding application roller is used to assist or consolidate the application of the application film 12 and the other following application roller is used to assist or consolidate the application.

Fig. 8 is a perspective view of a guide device that may be used in the laminating apparatus 100 shown in fig. 4. The guide device 50 has a second bracket 52 having an elbow region 52a, and two guide rollers 51 are mounted in the elbow region 52a and configured for contact with the protective layer 11 of the membrane module 10. The guide 50 also has a single-shaft fourth drive system, which comprises a seventh drive 53, which is configured for the translatory movable guidance and driving of the second carriage 52. For this purpose, the carriage 52 may have a guide rail 54, the seventh drive 53 and the guide rail 54 being movable in translation relative to each other.

In the embodiment shown in fig. 8, the fourth drive system is configured as a single-shaft drive system. However, it is also possible for the fourth drive system to be designed as a two-shaft drive system. It is also possible for the bend region 52a to be curved in an arc. A third guide roller may additionally be arranged between the two guide rollers 51 shown.

Next, an exemplary film attaching process for attaching a film to an inner surface of a U-shaped glass of a smart device is described with reference to fig. 9. The film application process can be advantageously carried out in particular with a film application device 100 as shown in fig. 4.

The U-shaped glass 1 is positioned in the jig base 20.

The membrane module 10 is provided and the membrane module 10 is clamped such that the membrane module 10 is tensioned.

The protective layer 11 is peeled off from the film assembly 10. With the peeling of the protective layer 11, the attachment film 12 from which the protective layer is peeled is attached to the inner surface of the U-shaped glass by the attachment roller 61, wherein the attachment roller 61 presses the attachment film 12 onto the inner surface 7 of the U-shaped glass 1, and the attachment roller 61 moves along the inner surface 7 of the U-shaped glass 1.

The positioning of the U-shaped glass and the provision, clamping and tensioning of the membrane module can be carried out simultaneously in time or one after the other. Some possible non-limiting examples are listed below: the U-shaped glass is positioned and the membrane assembly is provided simultaneously, and then the clamping and tensioning of the membrane assembly are carried out; firstly, providing and clamping a membrane assembly, then positioning U-shaped glass, and finally tensioning the membrane assembly; the film assembly is first supplied, clamped and tensioned, and then the U-shaped glass is positioned.

The sequence of application of the conformable film 12 to the inner surface of the U-shaped glass is schematically depicted in FIG. 9. Here, the attaching may be performed in the following order:

the film is applied from a starting point a, which is in a flat area of the inner surface of the first screen 2, toward a first folding point b, which is near the end of the second arc-shaped bent portion 5. In this way, the film can be applied to the second curved portion in a simpler and more reliable manner.

Then, the bonding roller 61 is returned from the folding point b to the starting point a.

Then, the film is attached to the inner surface of the first screen 2 from the starting point a toward the first arc-shaped bent portion until the film attachment to the inner surface of the first screen 2 is completed. The intermediate point c and the end point d on the inner surface of the first screen 2, which the pasting roller 61 passes through, are visible in fig. 9.

Then, the inner surface of the first arc-shaped bent portion 4 is subjected to film pasting, wherein the movement locus of the pasting roller 61 is subjected to interpolation control so that the pasting roller 61 keeps pressing the pasting film against the inner surface of the first arc-shaped bent portion 4 until the film pasting of the inner surface of the first arc-shaped bent portion 4 is completed, and the pasting roller 61 is guided from the transition portion (i.e., the end point d) between the first arc-shaped bent portion 4 and the first screen 2 to the transition portion between the first arc-shaped bent portion 4 and the second screen 3. An intermediate point e on the inner surface of the first arc-shaped bent portion 4, through which the application roller 61 passes, is depicted in fig. 9.

Finally, the inner surface of the second screen 3 is subjected to film application, in which the application roller 61 is moved on the inner surface of the second screen toward the free end portion of the second screen until the film application of the inner surface of the second screen 3 is completed. A passing point f and an end point g on the inner surface of the second screen 3, which the application roller 61 passes, are described in fig. 9.

In fig. 9, a fitting sequence sequentially passing through the following points a → b → a → c → d → e → f → g is shown. This is only an advantageous sequence of application. It goes without saying that other attaching sequences are possible, such as attaching continuously from the end of the second arc-shaped bent portion 5 toward the end of the second screen 3, or attaching continuously from the end of the second screen 3 toward the end of the second arc-shaped bent portion 5. Further, in the case of pasting a certain section of the inner surface 7 of the U-shaped glass 1, the pasting roller 61 does not necessarily have to be moved unidirectionally in a single time. For example, to consolidate the application quality, the application roller 61 can also be moved back and forth several times in this section and then be advanced again.

It will be appreciated that the film clamping claw 31, which is on the right in fig. 9 and is not shown, has already completed its required task when the laminating roller moves from point a to the turning point b, and thus the film clamping claw 31 may remain stationary and continue to clamp the film assembly, or the film clamping claw 31 may release the clamping of the film assembly 10.

In FIG. 9, to more clearly illustrate the peeling of the protective layer 11 from the film assembly 10 or the separation of the conformable film 12, two guide rollers 51 and a conformable roller 61 are depicted positioned such that the protective layer 11 separates from the conformable film 12 in the vicinity of the upper guide roller 51. It goes without saying that the separation of the protective layer 11 from the attachment film 12 can be caused in the vicinity of the lower guide roller 51 by appropriately positioning the two guide rollers 51 and the attachment roller 61. When the inner surface of the second screen 3 is pasted, the lower guide roller 51 may be positioned such that the lowest point of the lower guide roller 51 is lower than the inner surface of the second screen 3, so that it may be simply ensured that the pasting film 12 from which the protective layer 11 is peeled remains out of contact with the inner surface of the second screen 3 before pasting to the inner surface of the second screen 3. As already explained above, the positioning of the guide roller 51 and the positioning of the application roller 61 can be realized by means of a correspondingly controlled drive system.

Any of the actuators mentioned in this application may be an electric, pneumatic or hydraulic actuator, such as an electric, pneumatic or hydraulic motor. They may be servo-controlled, for example. The respective biaxial drive systems mentioned in the present application each have two translational degrees of freedom of movement perpendicular to one another. It is also possible that the two translational degrees of freedom of movement are not perpendicular to one another, but form an angle of, for example, 60 degrees. It is also possible to use a combination of one translational degree of freedom of movement and one rotational degree of freedom of movement instead of two translational degrees of freedom of movement.

In fig. 9, the jig base 20 and the U-shaped glass 1 positioned in the jig base are both laid flat. It goes without saying that it is also possible for the tool holder 20 to be pivotable by a predetermined angle from the lying position shown in fig. 9, for example for this purpose the table top of the table 23 can be provided with a corresponding pivoting mechanism. It is also possible that the receptacle of the tool holder 20 is not designed to lie flat, but rather has a predetermined inclination to the horizontal, for example 10 degrees or less, so that the U-shaped glass 1 also has this predetermined inclination to the horizontal in the positioned state.

Fig. 10 is a perspective view of a jig base 20 in a closed state according to another embodiment. The jig base includes a table 23. The jig base member 21 is fixed to the surface of the table 23. The jig base member 22 is provided with a base 26 and is rotatably supported on the base by a rotating shaft 28. The support 26 is mounted on a guide rail 27 so as to be movable in translation. Therefore, the jig base member 22 can move not only in translation but also in inversion relative to the jig base member 21. Further, the jig base member 21 is provided with a vacuum suction device. In fig. 10, a row of laterally extending bores 25 is visible, which are parallel to one another. Each bore 25 is closed at both ends and opens into the surface of the tool seat part 21 via a plurality of vertical bores distributed over the length of the bore 25. Also visible in fig. 10 is a vacuum source connection 24 for connection to a vacuum source, not shown, each bore 25 and vacuum source connection 24 being in communication with each other. When the U-shaped glass is placed on the jig base member 21, the U-shaped glass can be sucked on the jig base member 21 by vacuum. A guide roller 29 for guiding the film assembly to avoid contact with the jig base when the film sticking is to be completed may be additionally provided on the inclined surface of the end side of the jig base member 22.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

Finally, it is pointed out that the above-described embodiments are only intended to be understood as an example of the invention and do not limit the scope of protection of the invention. It will be apparent to those skilled in the art that modifications may be made in the foregoing embodiments without departing from the scope of the invention.

Claims

1. A film laminating device for laminating an inner surface of a U-shaped glass of a smart device, wherein the U-shaped glass (1) has a first screen (2) and a second screen (3) and a first arc-shaped bending portion (4) connecting the first screen and the second screen, characterized in that the film laminating device (100) comprises:

a jig seat (20) for positioning the U-shaped glass;

a film clamping device (30) configured to clamp and tension a film assembly (10), wherein the film assembly has a protective layer (11) and an adhesive film (12) to be adhered to the inner surface of the U-shaped glass;

a stripping device (40) configured to strip the protective layer from the film assembly; and

a laminating device (60) configured to laminate a non-protective layer laminated film to the inner surface of the U-shaped glass as the protective layer is peeled off, wherein the laminating device comprises a laminating roller (61) configured to press the non-protective layer laminated film onto the inner surface of the U-shaped glass, and the laminating roller is movable along the inner surface of the U-shaped glass;

preferably, the first screen has a greater length than the second screen;

preferably, the first screen has a second curved portion (5) on its free end, the second curved portion being curved inwards and having a smaller curvature than the first curved portion.

2. The film sticking apparatus according to claim 1, wherein the film assembly further comprises a carrier layer (13), the sticking film is attached to the carrier layer with its side facing away from the protective layer, and the film clamping device is configured for clamping the carrier layer; and/or

The jig seat comprises a plurality of jig seat components, wherein at least one jig seat component is a movable component, and the jig seat forms a receiving part for receiving the U-shaped glass in a state that the U-shaped glass is positioned in the jig seat;

preferably, the receiving portion has a contour conforming to a U-shaped glass;

preferably, the jig base comprises two jig base parts (21, 22), and the interface (24) of the two jig base parts is positioned in one side of the U-shaped shape of the jig base.

3. The laminating device according to any one of claims 1 to 2, characterized in that the film clamping means (30) has a pair of film clamping jaws (31), wherein at least one film clamping jaw is a movable part;

preferably, the clamping jaws each have a plurality of locating pins (32) configured for insertion into corresponding locating holes (14) of the membrane assembly;

preferably, at least one film clamping jaw can be driven uniaxially or biaxially, wherein the film clamping device comprises a uniaxial or biaxial first drive system (33) for the individual film clamping jaws;

further preferably, the first drive system (33) comprises a first abutment (36), a first shaft (34) and a first drive (35), the first shaft being movable in translation relative to the first abutment in a first direction (X1), and the first drive being configured for driving the first shaft in translation relative to the first abutment in the first direction, the film gripping claws being arranged in the end regions of the first shaft;

further preferably, the first drive system comprises a second drive (37), the first support being guidable and drivable by the second drive and being translationally movable relative to the second drive in a second direction (Z1), the second direction being perpendicular to the first direction.

4. The laminating apparatus according to any one of claims 1 to 3, characterized in that the film stripping means comprises a gripper (41) for gripping an end region of the protective layer of the film assembly;

preferably, the gripper is arranged on a second support (42) which can be driven either uniaxially or biaxially by a second drive system;

preferably, the second support has a body (42a) and a cantilever (42b) projecting from the body, the gripper being arranged on a free end of the cantilever;

preferably, the second drive system comprises a second shaft (44) and a third drive (45) able to drive the second carriage in a translational movement along the second shaft in a third direction (X2);

further preferably, the second drive system comprises a fourth drive (43), the second support being guidable and drivable by the fourth drive and being translationally movable with respect to the fourth drive in a fourth direction (Z2), the fourth direction being perpendicular to the third direction.

5. Laminating device according to any one of claims 1-4, characterised in that the laminating means comprise a first frame (62) in which the laminating roller is rotatably mounted, which first frame can be driven;

preferably, the first support has a bent area, and the attaching rollers are 1 in number and installed in the bent area of the first support;

preferably, the laminating device comprises a third drive system, the first carriage being drivable, either uniaxially or biaxially, by the third drive system;

preferably, the third drive system comprises a third axis (64) and a fifth drive (65) able to drive the first carriage in a translational movement along the third axis in a fifth direction (X3);

preferably, the third drive system comprises a third mount (66) guided with a translational motion on the third axis and a sixth drive (63) mounted on the third mount and by which the first carriage can be guided and driven and with a translational motion relative to the sixth drive in a sixth direction (Z3) perpendicular to the fifth direction.

6. The film laminating apparatus according to any one of claims 1 to 5, further comprising a guiding device (50) having at least one guiding roller (51) configured for contact with a protective layer of the film assembly;

preferably, the guide means comprise a second bracket (52) in which the guide roller is rotatably mounted and a fourth drive system for driving the second bracket;

preferably, the fourth drive system comprises a seventh drive (53) configured for guiding and driving the second carriage in a translatory motion;

preferably, the second bracket has a bent area, and the guide rollers are 2 in number and installed in the bent area of the second bracket;

preferably, the film sticking equipment comprises a frame (70), and the film clamping device, the film stripping device, the sticking device and the guiding device are installed on the frame.

7. The film laminating apparatus according to any one of claims 1 to 6 wherein the smart device is a smart phone; and/or

The film application device is configured for applying film application at ambient pressure.

8. A film lamination method for laminating an inner surface of a U-shaped glass of a smart device, wherein the U-shaped glass (1) has a first screen (2) and a second screen (3) and a first arc-shaped bent portion (4) connecting the first screen and the second screen, characterized by comprising the steps of:

positioning the U-shaped glass in a jig seat (20);

clamping and tensioning a membrane module (10), wherein the membrane module has a protective layer (11) and a bonding membrane (12) to be bonded to the inner surface of the U-shaped glass;

stripping the protective layer from the film assembly; and

attaching a non-protective layer attachment film to the inner surface of the U-shaped glass with peeling of the protective layer, wherein the non-protective layer attachment film is pressed against the inner surface of the U-shaped glass by an attachment roller (61) and the attachment roller is moved along the inner surface of the U-shaped glass;

preferably, the film sticking method is carried out by using the film sticking apparatus according to any one of claims 1 to 7.

9. The film laminating method according to claim 8, wherein the first screen has a greater length than the second screen and has a second arc-shaped bend (5) on its free end, wherein the second arc-shaped bend is bent inwards and has a smaller curvature than the first arc-shaped bend, wherein the step of "positioning the U-shaped glass in the jig base" is carried out such that the U-shaped glass is laid flat and the second screen is above the first screen; and/or

The lamination of the lamination film on the inner surface of the U-shaped glass by utilizing the lamination roller is performed according to the following lamination sequence:

laminating from a starting point (a) in a flat area of an inner surface of the first screen toward a first fold-back point (b) near a distal end of a second arc-shaped bend;

then, returning the laminating roller from the turning point to the starting point (a);

then, pasting the film on the inner surface of the first screen from the starting point (a) to the direction of the first arc-shaped bending part until the film pasting on the inner surface of the first screen is finished;

10. The film laminating method according to claim 8 or 9, wherein the holding of the film assembly is controlled so that the tension of the film assembly is maintained within a predetermined tension range; and/or

The membrane assembly is directed so that the protective layer-free conformable membrane remains out of contact with the inner surface of the U-shaped glass prior to conforming to the inner surface of the U-shaped glass.