Curved workpiece film pasting device and curved workpiece film pasting method

Abstract

The application discloses a curved workpiece film pasting device and a curved workpiece film pasting method. The curved workpiece film pasting device comprises a film pasting mechanism, a displacement mechanism, a carrying platform, a film pressing platform and a film pasting platform. The film pasting mechanism comprises a shell assembly, a workpiece profiling assembly and a first flexible pressing head. The shell assembly is provided with a first opening, the first flexible pressing head is arranged at the first opening, and the workpiece profiling assembly is arranged in the shell assembly. The displacement mechanism is connected with the shell assembly. The carrying platform is used for placing a film material, and the first flexible pressing head is used for sucking the film material. The film pressing platform is used for driving the first flexible pressing head to be combined with the workpiece profiling assembly, and the film pressing platform can also heat the film material. The film pasting platform is used for placing a curved workpiece, and the displacement mechanism is used for driving the film material to be combined with the curved workpiece. The film material with a required shape is obtained through the film pressing platform. Since the film material is processed into a specified shape suitable for the curved workpiece, the film material is pasted on the curved workpiece, and the film material is not prone to bending and wrinkling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workpiece film pasting, in particular to a curved workpiece film pasting device and a curved workpiece film pasting method. BACKGROUND

[0002] At present, the existing lens film pasting is mainly flat film pasting. With the increasing demand for curved lenses, the demand for pasting curved lenses also arises. However, if the traditional flat film pasting is directly applied to curved film pasting, the film material will be bent and wrinkled, which seriously affects the film pasting quality of the product.

[0003] Therefore, it is necessary to provide a new curved workpiece film pasting device and a curved workpiece film pasting method to solve or at least alleviate the above technical defects. SUMMARY

[0004] The main purpose of the present application is to provide a curved workpiece film pasting device and a curved workpiece film pasting method, which aims to solve the technical problem that the existing curved lens film pasting is easy to cause film material bending and wrinkling.

[0005] In order to achieve the above purpose, the present application provides a curved workpiece film pasting device, which comprises:

[0006] A film pasting mechanism, the film pasting mechanism comprises a housing assembly, a workpiece profiling assembly and a first flexible pressure head, the housing assembly is provided with a first opening, the first flexible pressure head is arranged at the first opening, and the workpiece profiling assembly is arranged in the housing assembly;

[0007] A displacement mechanism connected with the housing assembly;

[0008] A carrier platform for placing a film material, the displacement mechanism is used to drive the first flexible pressure head to suck the film material;

[0009] A film pressing platform, the displacement mechanism is used to drive the film material to move from the carrier platform to the film pressing platform, the film pressing platform is used to drive the first flexible pressure head to be attached with the workpiece profiling assembly, and the film pressing platform can also heat the film material sucked by the first flexible pressure head;

[0010] A film pasting platform for placing a curved workpiece, the displacement mechanism is used to drive the film material to move from the film pressing platform to the film pasting platform and to drive the film material to be attached with the curved workpiece.

[0011] In an embodiment, the shell assembly comprises a sealed chamber and a shell air pressure regulating mechanism, the sealed chamber is provided with the first opening, the first flexible pressing head seals the first opening, the workpiece profiling assembly is arranged in the sealed chamber, and the shell air pressure regulating mechanism is in communication with the inside of the sealed chamber and is used for regulating the air pressure inside the sealed chamber, so that the shell air pressure regulating mechanism can also drive the first flexible pressing head to fit the workpiece profiling assembly.

[0012] In an embodiment, the sealed chamber comprises a chamber body and a hollow tube in communication with the chamber body, the hollow tube is connected with the displacement mechanism, the chamber body is provided with the first opening, and the workpiece profiling assembly is arranged in the chamber body.

[0013] In an embodiment, the film pressing platform comprises a sealed shell, a second flexible pressing head, a film pressing air pressure regulating mechanism and a heating mechanism, the heating mechanism is used for heating the first flexible pressing head and / or the second flexible pressing head, the top of the sealed shell is provided with a second opening, the second flexible pressing head seals the second opening, the second flexible pressing head is used for fitting the side of the film material away from the first flexible pressing head, the film pressing air pressure regulating mechanism is in communication with the inside of the sealed shell and is used for regulating the air pressure inside the sealed shell, so that the second flexible pressing head can be pressed together with the first flexible pressing head fitting the workpiece profiling assembly to press the film material.

[0014] In an embodiment, the workpiece profiling assembly comprises a workpiece profiling piece, and the side of the workpiece profiling piece facing the first flexible pressing head is used for fitting the first flexible pressing head.

[0015] In an embodiment, the workpiece profiling assembly further comprises a profiling driving piece, the profiling driving piece is in transmission connection with the workpiece profiling piece and is used for driving the workpiece profiling piece to move towards or away from the first flexible pressing head.

[0016] In an embodiment, the film pasting platform comprises a film pasting platform body, a vacuum chamber and a sealing ring, the film pasting platform body is located in the vacuum chamber, the top of the vacuum chamber is provided with a through hole, the sealing ring is arranged in the through hole, the inner ring of the sealing ring is used for passing through the first flexible pressing head, the film pasting mechanism further comprises a sealed shell, the sealed shell is annularly arranged outside the shell assembly, the bottom surface of the sealed shell is provided with a avoiding hole for the first flexible pressing head to extend out, and the bottom surface of the sealed shell is used for sealingly connecting with the top surface of the vacuum chamber, so that a sealed cavity is formed in the vacuum chamber.

[0017] In an embodiment, the curved workpiece film pasting device further comprises a visual positioning mechanism, which comprises a mounting frame, and an image acquisition member and an auxiliary light source member mounted on the mounting frame, and the mounting frame is connected with the shell assembly.

[0018] In addition, the application further provides a curved workpiece film pasting method applied to the curved workpiece film pasting device, wherein the film pressing platform comprises a sealed shell, a second flexible pressing head, a film pressing air pressure regulating mechanism and a heating mechanism, the heating mechanism is used for heating the film material, a second opening is formed in the top of the sealed shell, the second flexible pressing head seals the second opening, and the curved workpiece film pasting method comprises the following steps:

[0019] controlling the displacement mechanism to drive the first flexible pressing head to suck the film material on the object loading platform;

[0020] controlling the displacement mechanism to drive the film material to abut against the second flexible pressing head;

[0021] controlling the heating mechanism to heat the first flexible pressing head and / or the second flexible pressing head, and controlling the film pressing air pressure regulating mechanism to increase the air pressure in the sealed shell, so that the top surface of the first flexible pressing head is attached to the bottom surface of the workpiece profiling assembly and drives the film material to bend, and the top surface of the second flexible pressing head is attached to the bottom surface of the film material;

[0022] cooling and forming the film material;

[0023] controlling the displacement mechanism to move to the film pasting platform, and driving the film material to be attached to the curved workpiece.

[0024] In an embodiment, the shell assembly of the curved workpiece film pasting device comprises a sealed cavity and a shell air pressure regulating mechanism, the sealed cavity is provided with the first opening, the workpiece profiling assembly is arranged in the sealed cavity, the shell air pressure regulating mechanism is connected with the sealed cavity, and the step of controlling the heating mechanism to heat the first flexible pressing head and / or the second flexible pressing head, and controlling the film pressing air pressure regulating mechanism to increase the air pressure in the sealed shell comprises:

[0025] controlling the heating mechanism to heat the first flexible pressing head and / or the second flexible pressing head, and controlling the shell air pressure regulating mechanism to reduce the air pressure in the sealed cavity, while controlling the film pressing air pressure regulating mechanism to increase the air pressure in the sealed shell.

[0026] In an embodiment, the object platform comprises an object platform body, a vacuum chamber and a sealing ring, the object platform body is located in the vacuum chamber; the film pasting mechanism further comprises a sealing shell, the sealing shell is annularly arranged outside the shell assembly, the bottom surface of the sealing shell is provided with an avoiding hole for the first flexible pressing head to extend out, and the bottom surface of the sealing shell is used for abutting against the top surface of the vacuum chamber and the sealing ring to form a closed cavity in the vacuum chamber; the step of controlling the displacement mechanism to move to the film pasting platform and drive the film material to be combined with the curved workpiece comprises:

[0027] controlling the displacement mechanism to drive the sealing shell to abut against the top surface of the vacuum chamber and the sealing ring, so that the film material is combined with the curved workpiece through the sealing ring;

[0028] controlling the air pressure in the vacuum chamber to decrease to a first preset air pressure value and maintain for a first preset time length, and controlling the shell air pressure adjusting mechanism to increase the air pressure in the closed cavity to a second preset air pressure value and maintain for a second preset time length;

[0029] controlling the air pressure in the vacuum chamber to recover to the initial state, and controlling the air pressure adjusting mechanism to control the air pressure in the closed cavity to recover to the initial state.

[0030] In an embodiment, the object platform comprises an object platform body, a vacuum chamber and a sealing ring, the object platform body is located in the vacuum chamber, the workpiece profiling assembly comprises a workpiece profiling piece and a profiling driving piece, and the profiling driving piece is in transmission connection with the workpiece profiling piece; the film pasting mechanism further comprises a sealing shell, the sealing shell is annularly arranged outside the shell assembly, the bottom surface of the sealing shell is provided with an avoiding hole for the first flexible pressing head to extend out, and the bottom surface of the sealing shell is used for abutting against the top surface of the vacuum chamber and the sealing ring to form a closed cavity in the vacuum chamber; the step of controlling the displacement mechanism to move to the film pasting platform and drive the film material to be combined with the curved workpiece comprises:

[0031] controlling the displacement mechanism to drive the sealing shell to abut against the top surface of the vacuum chamber and the sealing ring, so that the film material is combined with the curved workpiece through the sealing ring;

[0032] controlling the air pressure in the vacuum chamber to decrease to a first preset air pressure value and maintain for a first preset time length, and controlling the profiling driving piece to drive the workpiece profiling piece to press on the first flexible pressing head, and increasing the pressure of the film material on the curved workpiece to a preset pressure value through the first flexible pressing head and maintaining for a second preset time length;

[0033] controlling the vacuum chamber to recover to the initial state, and controlling the profiling driving member to drive the workpiece profiling member to move away from the first flexible pressing head.

[0034] In an embodiment, the object platform comprises an object platform body and a vacuum suction mechanism for suctioning the film material on the object platform body, and the step of controlling the displacement mechanism to drive the first flexible pressing head to suck the film material on the object platform comprises:

[0035] controlling the vacuum suction mechanism to suction the film material on the object platform body;

[0036] controlling the displacement mechanism to drive the first flexible pressing head to suck the film material on the object platform body;

[0037] turning off the vacuum suction mechanism.

[0038] In an embodiment, the curved workpiece film pasting device further comprises a visual positioning mechanism, which comprises a mounting frame and an image acquisition member mounted on the mounting frame, and the mounting frame is connected with the shell assembly.

[0039] The step of controlling the displacement mechanism to drive the first flexible pressing head to suck the film material on the object platform comprises:

[0040] controlling the displacement mechanism to drive the first flexible pressing head to move above the object platform;

[0041] controlling the image acquisition member to acquire first image information, wherein the first image information comprises first position information, and the displacement mechanism is controlled according to the first position information to drive the first flexible pressing head to suck the film material on the object platform;

[0042] And / or, the step of controlling the displacement mechanism to drive the film material to abut against the second flexible pressing head comprises:

[0043] controlling the displacement mechanism to drive the film material to move above the film pressing platform;

[0044] controlling the image acquisition member to acquire second image information, wherein the second image information comprises second position information, and the displacement mechanism is controlled according to the second position information to drive the film material to abut against the second flexible pressing head;

[0045] And / or, the step of controlling the displacement mechanism to move to the film pasting platform to drive the film material to be pasted with the curved workpiece comprises:

[0046] controlling the displacement mechanism to drive the film material to move above the film pasting platform;

[0047] Control the image acquisition unit to obtain third image information, wherein the third image information comprises third position information, and the displacement mechanism is controlled to drive the film material to be attached to the curved workpiece according to the third position information.

[0048] In the above technical solution of the present application, the film material is placed on the object platform, and then the displacement mechanism drives the first flexible pressing head to move above the object platform and then drives the first flexible pressing head to move downward, so that the first flexible pressing head can suck the film material. The displacement mechanism then drives the film material to move to the film pressing platform, and the film pressing platform drives the first flexible pressing head to be attached to the workpiece profiling assembly. The film material sucked by the first flexible pressing head also deforms in bending. At the same time, the film pressing platform heats the film material. After heating is completed, the film material is cooled and formed, so that the film material with the required shape is obtained. The release film on the bottom surface of the film material is torn off, and then the displacement mechanism drives the film material to move to the film attaching platform and then drives the film material to be attached to the curved workpiece. Since the cooled and formed film material is processed into a specified shape that is adapted to the curved workpiece, the film material is not prone to bending and wrinkling when being attached to the curved workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the structures shown in the drawings.

[0050] Figure 1 The structure schematic diagram of the curved workpiece film attaching equipment of an embodiment of the present application;

[0051] Figure 2 The partial sectional view schematic diagram of the curved workpiece film attaching equipment of an embodiment of the present application;

[0052] Figure 3 The partial sectional view schematic diagram of the curved workpiece film attaching equipment of an embodiment of the present application; Figure 2 The partial enlarged view schematic diagram at A;

[0053] Figure 4 The partial sectional view schematic diagram of the object platform of an embodiment of the present application;

[0054] Figure 5 The partial sectional view schematic diagram of the curved workpiece film attaching equipment of an embodiment of the present application;

[0055] Figure 6 The partial sectional view schematic diagram of the first flexible pressing head and the second flexible pressing head extruding the film material of an embodiment of the present application;

[0056] Figure 7A flowchart of a first embodiment of the method for attaching a film to a curved workpiece according to the present application is shown in FIG. 1.

[0057] Figure 8 A flowchart of a second embodiment of the method for attaching a film to a curved workpiece according to the present application is shown in FIG. 2.

[0058] Figure 9 A flowchart of a third embodiment of the method for attaching a film to a curved workpiece according to the present application is shown in FIG. 3.

[0059] Figure 10 A flowchart of a fourth embodiment of the method for attaching a film to a curved workpiece according to the present application is shown in FIG. 4.

[0060] Figure 11 A flowchart of a fifth embodiment of the method for attaching a film to a curved workpiece according to the present application is shown in FIG. 5.

[0061] BRIEF DESCRIPTION OF THE DRAWINGS

[0062]

[0063] The implementation of the present application, functional features and advantages will be further described with reference to the accompanying drawings. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0065] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (such as the posture shown in the drawings) and should be changed accordingly if the certain posture is changed. Figure 1

[0066] In addition, the description of “first”, “second” and the like in the present application is only for the purpose of description and should not be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features.

[0067] Furthermore, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.​

[0068] The application provides a curved workpiece film pasting device 1. In an embodiment, referring to FIG. 1, Figures 1-5 The curved workpiece film pasting device 1 comprises a film pasting mechanism 11, a displacement mechanism 12, a workpiece platform 13, a film pressing platform 14 and a film pasting platform 15. The film pasting mechanism 11 comprises a shell assembly 111, a workpiece profiling assembly 112 and a first flexible pressing head 113. The shell assembly 111 is provided with a first opening 11113, the first flexible pressing head 113 is arranged at the first opening 11113, and the workpiece profiling assembly 112 is arranged in the shell assembly 111. The displacement mechanism 12 is connected with the shell assembly 111. The workpiece platform 13 is used for placing a film material 3, and the displacement mechanism 12 is used for driving the first flexible pressing head 113 to suck the film material 3. The displacement mechanism 12 is used for driving the film material 3 to move from the workpiece platform 13 to the film pressing platform 14, and the film pressing platform 14 is used for driving the first flexible pressing head 113 to be combined with the workpiece profiling assembly 112. The film pressing platform 14 can also heat the film material 3. The film pasting platform 15 is used for placing a curved workpiece 2, and the displacement mechanism 12 is used for driving the film material 3 to move from the film pressing platform 14 to the film pasting platform 15 and driving the film material 3 to be combined with the curved workpiece 2.

[0069] The film material 3 is placed on the workpiece platform 13, the displacement mechanism 12 drives the first flexible pressing head 113 to move above the workpiece platform 13, and then drives the first flexible pressing head 113 to move downward, so that the first flexible pressing head 113 can suck the film material 3. The displacement mechanism 12 drives the film material 3 to move to the film pressing platform 14, the film pressing platform 14 drives the first flexible pressing head 113 to be combined with the workpiece profiling assembly 112, the film material 3 sucked by the first flexible pressing head 113 also deforms, the film pressing platform 14 heats the film material 3, and then the film material 3 is cooled and formed after heating, so that the film material 3 with a required shape is obtained. The release film on the bottom surface of the film material 3 is torn off, the displacement mechanism 12 drives the film material 3 to move to the film pasting platform 15, and then drives the film material 3 to be combined with the curved workpiece 2. Since the cooled and formed film material 3 is processed into a specified shape suitable for the curved workpiece 2, the film material 3 is pasted on the curved workpiece 2, and the film material 3 is not prone to bending and wrinkling. It should be noted that the film pressing platform 14 can first deform the film material 3, and then heat the film material 3, or first heat the film material 3, and then deform the film material 3. It should be further noted that the displacement mechanism 12 can be a mechanical arm.

[0070] According to an embodiment of the present application, the displacement mechanism 12 comprises an x-axis displacement device 121, a y-axis displacement device 122 and a z-axis displacement device 123. The x-axis displacement device 121 comprises a fixed frame 1211, an x-axis movable member 1212 and an x-axis driving assembly. The fixed frame 1211 comprises support columns 12111 and a cantilever 12112 connected with each other. The cantilever 12112 extends along the x-axis extension direction. The cantilever 12112 is in sliding fit with the x-axis movable member 1212. The x-axis driving assembly is in driving connection with the x-axis movable member 1212, and is configured to drive the x-axis movable member 1212 to reciprocate on the cantilever 12112 along the x-axis extension direction. The y-axis displacement device 122 comprises a moving platform and a y-axis driving assembly in driving connection. The object supporting platform 13, the film pressing platform 14 and the film pasting platform 15 are arranged on the moving platform. The y-axis driving assembly is configured to drive the moving platform to reciprocate along the y-axis extension direction. The z-axis displacement device 123 comprises a connecting frame 1231, a z-axis movable member 1232 and a z-axis driving assembly. The connecting frame 1231 is connected with the x-axis movable member 1212. The z-axis movable member 1232 is in sliding fit with the connecting frame 1231, so that the z-axis movable member 1232 can slide along the z-axis extension direction relative to the connecting frame 1231. The z-axis driving assembly is in driving connection with the z-axis movable member 1232, and is configured to drive the z-axis movable member 1232 to reciprocate along the z-axis extension direction relative to the connecting frame. The z-axis movable member 1232 is connected with the shell assembly 111. It should be noted that the x-axis extension direction is the front-rear direction, the y-axis extension direction is the left-right direction, and the z-axis extension direction is the up-down direction. It should be noted that the x-axis driving assembly is in driving connection with the x-axis movable member 1212, which can be achieved by a screw rod transmission or a gear and rack transmission, etc. The driving connection between the y-axis driving assembly and the moving platform and the driving connection between the z-axis driving assembly and the z-axis movable member 1232 can be achieved in the same or similar manner as the driving connection between the x-axis driving assembly and the x-axis movable member 1212, which will not be described herein.

[0071] With reference to Figure 2 and Figure 3As shown, in an embodiment, the shell assembly 111 comprises a sealed cavity 1111 provided with a first opening 11113, a first flexible pressing head 113 sealing the first opening 11113, a workpiece profiling assembly 112 arranged in the sealed cavity 1111, and a shell air pressure regulating mechanism in communication with the inside of the sealed cavity 1111 for regulating the air pressure inside the sealed cavity 1111 so that the shell air pressure regulating mechanism can also drive the first flexible pressing head 113 to adhere to the workpiece profiling assembly 112. Wherein, when the air pressure inside the sealed cavity 1111 is reduced by the shell air pressure regulating mechanism and the air pressure inside the sealed cavity 1111 is less than the external atmospheric pressure, the first flexible pressing head 113 will be deformed in the direction of the workpiece profiling assembly 112 under the action of the external atmospheric pressure, and the first flexible pressing head 113 will adhere to the workpiece profiling assembly 112 and be pressed on the workpiece profiling assembly 112 under the action of the external atmospheric pressure as the shell air pressure regulating mechanism continues to reduce the air pressure inside the sealed cavity 1111. Since the side of the first flexible pressing head 113 away from the workpiece profiling assembly 112 can adsorb the film material 3, the adsorbed film material 3 will also be deformed with the first flexible pressing head 113 under the action of the external atmospheric pressure and be pressed on the first flexible pressing head 113.

[0072] In an embodiment, the sealed cavity 1111 comprises a cavity body 11111 and a hollow tube 11112 in communication with the cavity body 11111, the hollow tube 11112 is connected with the displacement mechanism 12, the cavity body 11111 is provided with a first opening 11113, and the workpiece profiling assembly 112 is arranged in the cavity body 11111. Wherein, the hollow tube 11112 can be the z-axis movable piece 1232, the z-axis driving assembly can drive the hollow tube 11112 to move up and down, thereby driving the cavity body 11111 to move up and down, and further driving the first flexible pressing head 113 to move up and down through the cavity body 11111. In addition, the shell air pressure regulating mechanism can be communicated with the hollow tube 11112 so that the shell air pressure regulating mechanism can regulate the air pressure inside the cavity body 11111 through the hollow tube 11112.

[0073] Referring to Figure 2 , Figure 6As shown, in an embodiment, the film pressing platform 14 comprises a sealed housing 141, a second flexible pressing head 142, a film pressing air pressure regulating mechanism, and a heating mechanism for heating the first flexible pressing head 113 and / or the second flexible pressing head 142. The top of the sealed housing 141 is provided with a second opening 1411, and the second flexible pressing head 142 seals the second opening 1411. The second flexible pressing head 142 is used to adhere to the side of the film material 3 that is away from the first flexible pressing head 113. The film pressing air pressure regulating mechanism is in communication with the inside of the sealed housing 141, and is used to adjust the air pressure inside the sealed housing 141, so that the second flexible pressing head 142 can press the film material 3 together with the first flexible pressing head 113 that adheres to the workpiece profiling assembly 112. After the first flexible pressing head 113 adsorbs the film material 3, the displacement mechanism 12 drives the film material 3 to move above the film adhering platform 15, and then drives the film material 3 to descend, so that the side of the film material 3 that is away from the first flexible pressing head 113 abuts against the top surface of the second flexible pressing head 142. Then, the film pressing air pressure regulating mechanism is controlled to increase the air pressure inside the sealed housing 141, and the sealed cavity chamber 1111 air pressure regulating mechanism is controlled to reduce the air pressure inside the sealed cavity chamber 1111, and the heating mechanism is controlled to heat the first flexible pressing head 113, or the heating mechanism is controlled to heat the second flexible pressing head 142, or the heating mechanism is controlled to heat the first flexible pressing head 113 and the second flexible pressing head 142 together. Due to the increase of the air pressure inside the sealed housing 141 by the film pressing air pressure regulating mechanism, the second flexible pressing head 142 bends and deforms in the direction of the film material 3. As the film pressing air pressure regulating mechanism continues to increase the air pressure inside the sealed housing 141, the second flexible pressing head 142 adheres to the film material 3 and pushes the film material 3 and the first flexible pressing head 113 to move in the direction of the workpiece profiling assembly 112, until the first flexible pressing head 113 presses on the workpiece profiling assembly 112 and adheres to the workpiece profiling assembly 112. At this time, the second flexible pressing head 142 further presses the film material 3. Since the first flexible pressing head 113 adheres to the workpiece profiling assembly 112, the first flexible pressing head 113 is limited by the workpiece profiling assembly 112. The force acting on the film material 3 by the second flexible pressing head 142 is transmitted to the first flexible pressing head 113 through the film material 3, and then transmitted to the workpiece profiling assembly 112 by the first flexible pressing head 113. This force will cause the workpiece profiling assembly 112 to generate a counterforce in the opposite direction, which will act on the film material 3 through the first flexible pressing head 113, causing the film material 3 to be pressed by the first flexible pressing head 113 and the second flexible pressing head 142 at the same time, and further causing the film material 3 to bend and deform under the pressing. In addition, the reduction of the air pressure inside the sealed cavity chamber 1111 by the sealed cavity chamber 1111 air pressure regulating mechanism will make the first flexible pressing head 113 adhere to the workpiece profiling assembly 112 faster under the action of the second flexible pressing head 142, and enable the second flexible pressing head 142 to press the first flexible pressing head 113 on the workpiece profiling assembly 112 faster, thereby reducing the time spent for the film material 3 to be formed.It should be noted that the heating mechanism can transmit heat to the first flexible pressing head 113 and the second flexible pressing head 142 through heat conduction, and then the first flexible pressing head 113 and the second flexible pressing head 142 transmit the heat to the film material 3. In addition, the heating mechanism can also heat the first flexible pressing head 113 and the second flexible pressing head 142 through infrared heating and other heating modes. It should be noted that the heating mechanism can also directly transmit heat to the film material 3 through heat conduction to heat the film material 3, or directly heat the film material 3 through other heating modes.

[0074] According to an embodiment of the present application, the object platform 13 comprises an object platform body 131 for placing the film material 3 and a vacuum suction mechanism 132 for suctioning the film material 3 on the object platform body 131. When the first flexible pressing head 113 sucks the film material 3, the vacuum suction mechanism 132 is closed to enable the displacement mechanism 12 to drive the film material 3 to move away from the object platform 13 through the first flexible pressing head 113.

[0075] In an embodiment, the workpiece profiling assembly 112 comprises a workpiece profiling piece 1121, and one side of the workpiece profiling piece 1121 is used to adhere to the first flexible pressing head 113. The workpiece profiling piece 1121 is a curved workpiece profiling piece 1121, and the curvature of the curved workpiece profiling piece 1121 is matched with the curvature of the formed film material 3. Therefore, if the film material 3 needs to be bent to a specified shape, the workpiece profiling piece 1121 needs to be designed according to the curvature of the specified shape of the film material 3, so as to ensure that the formed film material 3 is the shape specified by the user, and the film material 3 is not easy to be bent and wrinkled after being adhered to the curved workpiece 2.

[0076] In addition, in an embodiment, the workpiece profiling assembly 112 further comprises a profiling driving piece in transmission connection with the workpiece profiling piece 1121, and used to drive the workpiece profiling piece 1121 to move towards or away from the first flexible pressing head 113. When the formed film material 3 needs to be adhered to the curved workpiece 2 for film adhering and pressure maintaining, the workpiece profiling driving piece can be driven by the profiling driving piece to descend, so that the workpiece profiling driving piece applies pressure to the film material 3 through the first flexible pressing head 113, and presses the film material 3 on the curved workpiece 2, thereby performing pressure maintaining operation.

[0077] Referring to Figure 2 and Figure 3As shown, in an embodiment, the film pasting platform 15 comprises a film pasting platform body 151, a vacuum chamber 152, and a sealing ring 153. The film pasting platform body 151 is located in the vacuum chamber 152. The top of the vacuum chamber 152 is provided with a through hole. The sealing ring 153 is arranged in the through hole. The inner ring of the sealing ring 153 is used for the first flexible pressing head 113 to pass through. The film pasting mechanism 11 further comprises a sealing shell 114. The sealing shell 114 is annularly arranged on the outside of the shell assembly 111. The bottom surface of the sealing shell 114 is provided with a relief hole 1141 for the first flexible pressing head 113 to extend out of. The bottom surface of the sealing shell 114 is used for sealing connection with the top surface of the vacuum chamber 152, so as to form a closed cavity 1521 in the vacuum chamber 152. When the film material 3 needs to be pasted and pressure-maintained after being shaped and pasted with the curved workpiece 2, the displacement mechanism 12 is first controlled to drive the sealing shell 114 to descend together with the first flexible pressing head 113. When the bottom surface of the sealing shell 114 abuts against the top surface of the vacuum chamber 152, the film material 3 sucked by the first flexible pressing head 113 is pasted with the curved workpiece 2. Since the bottom surface of the sealing shell 114 is sealingly connected with the top surface of the vacuum chamber 152, a closed cavity 1521 is formed in the vacuum chamber 152. The vacuum chamber 152 is subjected to vacuumizing treatment. The shell air pressure regulating mechanism is controlled to inject compressed air into the cavity body 11111 through the hollow pipe 11112, so as to increase the pressure inside the cavity body 11111, so as to maintain the pressure of the film material 3 on the curved workpiece 2 at a certain value for a period of time, so as to perform pressure-maintaining treatment on the film material 3. It should be noted that the operation of controlling the profiling driving member to drive the profiling workpiece to be pressed downward, so that the workpiece profiling driving member applies pressure to the film material 3 through the first flexible pressing head 113 and presses the film material 3 on the flexible workpiece can replace the process of controlling the shell air pressure regulating mechanism to inject compressed air into the cavity body 11111 through the hollow pipe 11112.

[0078] According to an embodiment of the present application, the film pasting platform 15 comprises a film pasting platform body 151, a vacuum chamber 152, and a sealing ring 153. The film pasting platform body 151 is located in the vacuum chamber 152. The top of the vacuum chamber 152 is provided with a through hole. The sealing ring 153 is arranged in the through hole. The inner ring of the sealing ring 153 is used for the first flexible pressing head 113 to pass through. The film pasting mechanism 11 further comprises a sealing shell 114. The sealing shell 114 is annularly arranged on the outside of the shell assembly 111. The bottom surface of the sealing shell 114 is provided with a relief hole 1141 for the first flexible pressing head 113 to extend out of. The bottom surface of the sealing shell 114 is used for sealing connection with the top surface of the vacuum chamber 152, so as to form a closed cavity 1521 in the vacuum chamber 152. The inner ring of the sealing ring 153 is sealingly pasted with the outer wall of the cavity body 11111. In other words, the inner ring of the sealing ring 153 is sealingly pasted with the outer wall of the cavity body 11111. Similarly, the closed cavity 1521 can be formed in the vacuum chamber 152.

[0079] As Figure 1 and Figure 2As shown, in an embodiment, the curved workpiece film pasting device 1 further comprises a visual positioning mechanism 16, which comprises a mounting frame 161, and an image acquisition member 162 and an auxiliary light source member 163 mounted on the mounting frame 161, and the mounting frame 161 is connected with the shell assembly 111. By arranging the visual positioning mechanism 16, the image acquisition member 162 can acquire image information, and the position information is contained in the image information, and the displacement mechanism 12 can drive the shell assembly 111 to move to a position corresponding to the position information according to the position information; and the auxiliary light source member 163 can effectively reduce the interference of external environmental light source on the image acquisition member 162. It should be noted that the image acquisition member 162 can be a CCD (English name: Charge Coupled Devices, Chinese name: photosensitive coupling element) camera.

[0080] In addition, the present application also provides a curved workpiece film pasting method, which is applied to the curved workpiece film pasting device described above, and the film pressing platform comprises a sealed shell, a second flexible pressing head, a film pressing air pressure regulating mechanism and a heating mechanism, the heating mechanism is used for heating the film material, a second opening is arranged at the top of the sealed shell, and the second flexible pressing head seals the second opening, and the second flexible pressing head is used for pressing the film material on the film pressing platform. Figure 7 , Figure 7 The curved workpiece film pasting method is a first embodiment of the present application, and the steps of the curved workpiece film pasting method comprise:

[0081] S100, controlling the displacement mechanism to drive the first flexible pressing head to suck the film material on the loading platform;

[0082] The film material is placed on the loading platform, the displacement mechanism is controlled to drive the first flexible pressing head to move above the loading platform, and then the displacement mechanism is controlled to drive the first flexible pressing head to descend, so that the first flexible pressing head sucks the film material; after the film material is sucked by the first flexible pressing head, the displacement mechanism can drive the film material to move by driving the first flexible pressing head, so as to facilitate the subsequent processing and film pasting of the film material.

[0083] S200, controlling the displacement mechanism to drive the film material to abut against the second flexible pressing head;

[0084] The displacement mechanism is controlled to drive the film material to move from the loading platform to above the film pasting platform, and then the displacement mechanism is controlled to drive the film material to descend, so that the side of the film material away from the first flexible pressing head abuts against or is attached to the second flexible pressing head.

[0085] S300, control the heating mechanism to heat the first flexible pressing head and / or the second flexible pressing head, and control the film pressing air pressure regulating mechanism to increase the air pressure in the closed shell, so that the top surface of the first flexible pressing head is attached to the bottom surface of the workpiece profiling assembly and drives the film material to bend, and the top surface of the second flexible pressing head is attached to the bottom surface of the film material;

[0086] The film pressing air pressure regulating mechanism is controlled to increase the air pressure in the closed shell, and the heating mechanism is controlled to heat the first flexible pressing head, or the heating mechanism is controlled to heat the second flexible pressing head, or the heating mechanism is controlled to heat the first flexible pressing head and the second flexible pressing head together; due to the increase of the air pressure in the closed shell by the film pressing air pressure regulating mechanism, the second flexible pressing head bends and deforms towards the direction of the film material, and as the film pressing air pressure regulating mechanism continues to increase the air pressure in the closed shell, the second flexible pressing head is attached to the film material and drives the film material and the first flexible pressing head to move towards the direction of the workpiece profiling assembly, until the first flexible pressing head is pressed on the workpiece profiling assembly and attached to the workpiece profiling assembly, at this time the second flexible pressing head extrudes towards the film material, and since the first flexible pressing head is attached to the workpiece profiling assembly, the first flexible pressing head is limited by the workpiece profiling assembly, the force exerted by the second flexible pressing head on the film material is transmitted to the first flexible pressing head through the film material, and then transmitted to the workpiece profiling assembly by the first flexible pressing head, which will cause the workpiece profiling assembly to generate a counterforce in the opposite direction of the force, and the counterforce will act on the film material through the first flexible pressing head, causing the film material to be extruded by the first flexible pressing head and the second flexible pressing head, resulting in the film material being bent and deformed under the extrusion. It should be noted that the film material can be heated first and then extruded and deformed, or the film material can be extruded and deformed first and then heated.

[0087] S400, cooling and forming the film material;

[0088] The film material can be cooled and formed by natural cooling, or the film material can be cooled and formed by a refrigeration element, so as to obtain a film material with a specified shape.

[0089] S500, control the displacement mechanism to move to the film attaching platform to drive the film material to attach to the curved workpiece.

[0090] After the cooling and forming of the film material, the displacement mechanism is controlled to move to the film attaching platform above the film attaching platform, and the displacement mechanism is controlled to drive the film material to descend, so that the film material is attached to the curved workpiece. Since the film material is processed into a specified shape which is adapted to the curvature of the curved workpiece, the film material is not easy to bend and wrinkle when attached to the curved workpiece.

[0091] The film material is placed on the object platform, and then the first flexible pressing head is moved above the object platform by the displacement mechanism, and then the first flexible pressing head is moved downward to enable the first flexible pressing head to suck the film material; the displacement mechanism moves the film material to the film pressing platform, controls the film pressing air pressure regulation mechanism to increase the air pressure in the closed shell, and controls the heating mechanism to heat the first flexible pressing head and the second flexible pressing head; because the film pressing air pressure regulation mechanism increases the air pressure in the closed shell, the second flexible pressing head is deformed and bent in the direction of the film material, and as the film pressing air pressure regulation mechanism continuously increases the air pressure in the closed shell, the second flexible pressing head is attached to the film material and pushes the film material and the first flexible pressing head to move in the direction of the workpiece profiling assembly until the first flexible pressing head is pressed on the workpiece profiling assembly and is attached to the workpiece profiling assembly, at this time, the second flexible pressing head extrudes the film material in the direction of the film material, and the film material is extruded by the first flexible pressing head and the second flexible pressing head, causing the film material to be deformed and bent under the extrusion, and after heating is completed, the film material is cooled and formed, thereby obtaining a film material with a required shape, the release film on the bottom surface of the film material is torn off, and then the film material is moved to the film attaching platform by the displacement mechanism and is attached to the curved workpiece, because the cooled and formed film material is processed into a specified shape that is adapted to the curved workpiece, the film material is attached to the curved workpiece, and the film material is not prone to bending and wrinkling.

[0092] In an embodiment, the housing assembly of the curved workpiece film attaching device includes a closed chamber and a housing air pressure regulation mechanism, the closed chamber is provided with the first opening, the workpiece profiling assembly is arranged in the closed chamber, and the housing air pressure regulation mechanism is connected with the closed chamber, referring to Figure 8 , Figure 8 The flowchart of the second embodiment of the curved workpiece film attaching method of the present application, the step of controlling the heating mechanism to heat the first flexible pressing head and / or the second flexible pressing head and controlling the film pressing air pressure regulation mechanism to increase the air pressure in the closed shell includes:

[0093] S310, controlling the heating mechanism to heat the film material, controlling the housing air pressure regulation mechanism to reduce the air pressure in the closed chamber, and controlling the film pressing air pressure regulation mechanism to increase the air pressure in the closed shell.

[0094] By simultaneously controlling the housing air pressure regulation mechanism to reduce the air pressure in the closed chamber and the film pressing air pressure regulation mechanism to increase the air pressure in the closed shell, the first flexible pressing head can be more quickly attached to the workpiece profiling assembly under the action of the second flexible pressing head, and the second flexible pressing head can more quickly press the first flexible pressing head on the workpiece profiling assembly, thereby reducing the time spent for film forming.

[0095] According to an embodiment of the present application, the step of S400 includes:

[0096] S410, turn off the film pressing air pressure regulating mechanism;

[0097] S420, control the displacement mechanism to drive the film material to move upward;

[0098] S430, remove the release film at the bottom of the film material.

[0099] The film pressing air pressure regulating mechanism is turned off, and the air pressure in the sealed chamber is kept in a negative pressure state. Then the displacement mechanism is controlled to drive the film material to move upward, so that the release film attached to the bottom of the film material can be removed, and the subsequent film pasting process can be carried out smoothly.

[0100] In an embodiment, the object carrying platform comprises an object carrying platform body, a vacuum chamber and a sealing ring, the object carrying platform body being located in the vacuum chamber; the film pasting mechanism further comprises a sealing shell, the sealing shell being annularly arranged outside the shell assembly, the bottom surface of the sealing shell being provided with an avoiding hole for the first flexible pressing head to extend out, and the bottom surface of the sealing shell being used to abut against the top surface of the vacuum chamber and the sealing ring, so that a sealed cavity is formed in the vacuum chamber; refer to Figure 9 , Figure 9 It is a flowchart of the third embodiment of the curved workpiece film pasting method of the present application, and the steps of S500 comprise:

[0101] S510, control the displacement mechanism to drive the sealing shell to abut against the top surface of the vacuum chamber and the sealing ring, so that the film material is pasted to the curved workpiece through the sealing ring;

[0102] S520, control the air pressure in the vacuum chamber to decrease to a first preset air pressure value and maintain the first preset time length, and control the shell air pressure regulating mechanism to increase the air pressure in the sealed chamber to a second preset air pressure value and maintain the second preset time length;

[0103] S530, control the air pressure in the vacuum chamber to return to the initial state, and control the air pressure regulating mechanism to control the air pressure in the sealed chamber to return to the initial state.

[0104] When the bottom surface of the sealing shell abuts against the top surface of the vacuum chamber, the film material sucked by the first flexible pressure head is attached to the curved workpiece. Since the bottom surface of the sealing shell is sealingly connected to the top surface of the vacuum chamber, a closed cavity is formed in the vacuum chamber. The vacuum chamber is subjected to vacuumizing treatment, that is, the air pressure value in the vacuum chamber is reduced to a first preset air pressure value and maintained for a first preset time length. The shell air pressure regulating mechanism is controlled to inject compressed air into the chamber body through the hollow pipe, so as to increase the pressure in the chamber body, so that the air pressure in the chamber body rises to a second preset air pressure value and is maintained for a second preset time length, so as to perform pressure maintaining treatment on the film material. After the pressure maintaining is completed, the air pressure in the vacuum chamber is controlled to return to the initial state, that is, the air pressure in the vacuum chamber returns to the state before the vacuumizing, and the film attaching is completed. The air pressure regulating mechanism is controlled to control the air pressure in the closed cavity to return to the initial state, that is, the air pressure regulating mechanism adjusts the air pressure in the closed cavity to return to the air pressure state before the injection of the compressed air. It should be noted that the first preset time length can be equal to the second preset time length.

[0105] In an embodiment, the object carrying platform comprises an object carrying platform body, a vacuum chamber and a sealing ring, the object carrying platform body is located in the vacuum chamber, the workpiece profiling assembly comprises a workpiece profiling piece and a profiling driving piece, the profiling driving piece is in transmission connection with the workpiece profiling piece; the film attaching mechanism further comprises a sealing shell, the sealing shell is annularly arranged outside the shell assembly, the bottom surface of the sealing shell is provided with an avoiding hole for the first flexible pressure head to extend out, and the bottom surface of the sealing shell is used for abutting against the top surface of the vacuum chamber and the sealing ring, so that a closed cavity is formed in the vacuum chamber. Referring to Figure 10 , Figure 10 The flowchart of the fourth embodiment of the curved workpiece film attaching method of the present application is shown in FIG. 5, and the steps of S500 comprise:

[0106] S510', the displacement mechanism is controlled to drive the sealing shell to abut against the top surface of the vacuum chamber and the sealing ring, so that the film material is attached to the curved workpiece through the sealing ring;

[0107] S520', the air pressure in the vacuum chamber is controlled to be reduced to a first preset air pressure value and maintained for a first preset time length, and the profiling driving piece is controlled to drive the workpiece profiling piece to press on the first flexible pressure head, and the first flexible pressure head is used to increase the pressure of the film material on the curved workpiece to a preset pressure value and maintained for a second preset time length;

[0108] S530', the air pressure in the vacuum chamber is controlled to return to the initial state, and the profiling driving piece is controlled to drive the workpiece profiling piece to move away from the first flexible pressure head.

[0109] The workpiece profiling driving member is driven to descend by controlling the profiling driving member, so that the workpiece profiling driving member applies pressure to the film material through the first flexible pressing head and presses the film material on the curved workpiece, thereby replacing the process of injecting compressed air into the cavity body through the hollow pipe by the shell air pressure regulating mechanism, and the same pressure maintaining effect can be achieved.

[0110] In an embodiment, the object platform comprises an object platform body and a vacuum suction mechanism, the vacuum suction mechanism is used to suck the film material on the object platform body, referring to Figure 11 , Figure 11 The flowchart of the fifth embodiment of the curved workpiece film pasting method of the present application is shown in S100.

[0111] S110, control the vacuum suction mechanism to suck the film material on the object platform body;

[0112] S120, control the displacement mechanism to drive the first flexible pressing head to suck the film material on the object platform body;

[0113] S130, turn off the vacuum suction mechanism.

[0114] The object platform body is used to place the film material, and the vacuum suction mechanism is used to suck the film material on the object platform body. After the first flexible pressing head sucks the film material, the vacuum suction mechanism is turned off, so that the displacement mechanism can drive the film material to leave the object platform through the first flexible pressing head.

[0115] In an embodiment, the curved workpiece film pasting device further comprises a visual positioning mechanism, the visual positioning mechanism comprises a mounting frame and an image acquisition member mounted on the mounting frame, and the mounting frame is connected with the shell assembly.

[0116] S100 comprises the following steps:

[0117] S110', control the displacement mechanism to drive the first flexible pressing head to move above the object platform;

[0118] S120', control the image acquisition member to acquire first image information, wherein the first image information comprises first position information, and according to the first position information, control the displacement mechanism to drive the first flexible pressing head to suck the film material on the object platform;

[0119] And / or, S200 comprises the following steps:

[0120] S210, control the displacement mechanism to drive the film material to move above the film pressing platform;

[0121] S220, controlling the image acquisition component to acquire second image information, wherein the second image information comprises second position information, and the displacement mechanism is controlled to drive the film material to abut against the second flexible pressing head according to the second position information;

[0122] And / or, the steps of S500 include:

[0123] S510'', controlling the displacement mechanism to drive the film material to move above the film pasting platform;

[0124] S520'', controlling the image acquisition component to acquire third image information, wherein the third image information comprises third position information, and the displacement mechanism is controlled to drive the film material to abut against the curved workpiece according to the third position information.

[0125] The image acquisition component is controlled to acquire image information, wherein the image information comprises position information, and the displacement mechanism can drive the first flexible pressing head to accurately move to a position corresponding to the position information; taking the displacement mechanism driving the first flexible pressing head to suck the film material as an example, the displacement mechanism is controlled to drive the first flexible pressing head to move above the object loading platform; if the displacement mechanism is controlled to drive the first flexible pressing head to directly press down, the first flexible pressing head may not be able to accurately suck the film material due to the deviation of the position of the film material placed on the object loading platform each time, therefore, the image acquisition component is controlled to acquire first image information of the film material, and the displacement mechanism can drive the first flexible pressing head to accurately suck the film material according to the first position information in the first image information; the first position information is related to the actual position of the film material on the object loading platform, therefore, the displacement mechanism can drive the first flexible pressing head to accurately suck the film material according to the first position information; as for the image acquisition component acquiring second image information and third image information, the displacement mechanism can drive the first flexible pressing head to accurately move to a position related to the position information according to the second position information and the third position information, and the principle is similar to that of the displacement mechanism driving the first flexible pressing head to move according to the first position information, which will not be described here. In addition, an auxiliary light source component can be additionally provided, which can effectively reduce the interference of external environmental light sources on the image acquisition component.

[0126] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A film-applying device for curved workpieces, characterized in that, include: A film-applying mechanism, comprising a housing assembly, a workpiece conforming assembly, and a first flexible pressure head, wherein the housing assembly is provided with a first opening, the first flexible pressure head is disposed at the first opening, and the workpiece conforming assembly is disposed inside the housing assembly; A displacement mechanism, which is connected to the housing assembly; A loading platform is used to place the membrane material, and the displacement mechanism is used to drive the first flexible pressure head to pick up the membrane material; The film pressing platform, wherein the displacement mechanism is used to move the film material from the carrying platform to the film pressing platform, the film pressing platform is used to drive the first flexible pressure head to fit with the workpiece conforming component, the film material sucked by the first flexible pressure head will bend and deform, and the film pressing platform can also heat the film material; A film-applying platform is used to place curved workpieces, and a displacement mechanism is used to move the film material from the pressing platform to the film-applying platform and to make the film material adhere to the curved workpiece.

2. The curved workpiece film application equipment according to claim 1, characterized in that, The housing assembly includes a sealed chamber and a housing air pressure regulating mechanism. The sealed chamber is provided with the first opening, and the first flexible pressure head seals the first opening. The workpiece conforming assembly is disposed in the sealed chamber. The housing air pressure regulating mechanism is connected to the interior of the sealed chamber and is used to regulate the air pressure inside the sealed chamber so that the housing air pressure regulating mechanism can also drive the first flexible pressure head to fit against the workpiece conforming assembly.

3. The curved workpiece film application equipment according to claim 2, characterized in that, The sealed chamber includes a chamber body and a hollow tube communicating with the chamber body. The hollow tube is connected to the displacement mechanism. The chamber body is provided with the first opening. The workpiece contouring component is disposed within the chamber body.

4. The curved workpiece film application equipment according to claim 1, characterized in that, The film pressing platform includes a sealed outer shell, a second flexible pressing head, a film pressing air pressure regulating mechanism, and a heating mechanism. The heating mechanism is used to heat the first flexible pressing head and / or the second flexible pressing head. The top of the sealed outer shell has a second opening, and the second flexible pressing head seals the second opening. The second flexible pressing head is used to fit against the side of the film material away from the first flexible pressing head. The film pressing air pressure regulating mechanism is connected to the interior of the sealed outer shell and is used to adjust the air pressure inside the sealed outer shell so that the second flexible pressing head and the first flexible pressing head, which fits against the workpiece conforming component, can jointly press the film material.

5. The film-applying equipment for curved workpieces according to any one of claims 1 to 4, characterized in that, The workpiece contouring assembly includes a workpiece contouring component, the side of which faces the first flexible pressure head is used to fit against the first flexible pressure head.

6. The curved workpiece film application equipment according to claim 5, characterized in that, The workpiece contouring assembly further includes a contouring drive component, which is connected to the workpiece contouring component for driving the workpiece contouring component to move toward or away from the first flexible pressure head.

7. The coating equipment for curved workpieces according to any one of claims 1 to 4, characterized in that, The film application platform includes a film application platform body, a vacuum chamber, and a sealing ring. The film application platform body is located inside the vacuum chamber. A through hole is provided at the top of the vacuum chamber. The sealing ring is located inside the through hole. The inner ring of the sealing ring is used for the first flexible pressure head to pass through. The film application mechanism also includes a sealing shell. The sealing shell is arranged around the outside of the shell assembly. An avoidance hole is opened on the bottom surface of the sealing shell for the first flexible pressure head to extend out. The bottom surface of the sealing shell is used to seal and connect with the top surface of the vacuum chamber to form a sealed cavity inside the vacuum chamber.

8. The film-applying equipment for curved workpieces according to any one of claims 1 to 4, characterized in that, The curved workpiece film application equipment also includes a vision positioning mechanism, which includes a mounting frame and an image acquisition component and an auxiliary light source component mounted on the mounting frame. The mounting frame is connected to the housing assembly.

9. A method for applying a film to a curved workpiece, characterized in that, The method for applying film to curved workpieces is applied to the curved workpiece film application equipment according to any one of claims 1 to 8. The film pressing platform includes a sealed outer shell, a second flexible pressing head, a film pressing air pressure regulating mechanism, and a heating mechanism. The heating mechanism is used to heat the film material. A second opening is provided at the top of the sealed outer shell, and the second flexible pressing head seals the second opening. The steps of the method for applying film to curved workpieces include: The displacement control mechanism drives the first flexible pressure head to pick up the membrane material on the loading platform; The displacement mechanism is controlled to drive the membrane material to abut against the second flexible pressure head; The heating mechanism is controlled to heat the first flexible pressure head and / or the second flexible pressure head, and the pressure film air pressure regulating mechanism is controlled to increase the air pressure inside the sealed shell, so that the top surface of the first flexible pressure head is attached to the bottom surface of the workpiece conforming component and drives the film material to bend, and the top surface of the second flexible pressure head is attached to the bottom surface of the film material. The membrane material is cooled and formed. The displacement mechanism is controlled to move to the film-applying platform, thereby causing the film material to adhere to the curved workpiece.

10. The method for applying film to curved workpieces according to claim 9, characterized in that, The housing assembly of the curved workpiece film application equipment includes a sealed chamber and a housing air pressure regulating mechanism. The sealed chamber is provided with the first opening. The workpiece contouring assembly is disposed in the sealed chamber. The housing air pressure regulating mechanism is connected to the sealed chamber. The steps of controlling the heating mechanism to heat the first flexible pressure head and / or the second flexible pressure head, and controlling the film application air pressure regulating mechanism to increase the air pressure inside the sealed housing include: The heating mechanism is controlled to heat the first flexible pressure head and / or the second flexible pressure head, and the housing air pressure regulation mechanism is controlled to reduce the air pressure in the sealed cavity, while the pressure film air pressure regulation mechanism is controlled to increase the air pressure in the sealed outer shell.

11. The method for applying film to curved workpieces according to claim 10, characterized in that, The loading platform includes a loading platform body, a vacuum chamber, and a sealing ring. The loading platform body is located inside the vacuum chamber. The film-applying mechanism also includes a sealing shell. The sealing shell is arranged around the outside of the housing assembly. The bottom surface of the sealing shell has a clearance hole for the first flexible pressure head to extend out. The bottom surface of the sealing shell is used to abut against the top surface of the vacuum chamber and the sealing ring to form a sealed cavity inside the vacuum chamber. The step of controlling the displacement mechanism to move to the film-applying platform and causing the film material to adhere to the curved workpiece includes: The displacement mechanism is controlled to drive the sealing shell to abut against the top surface of the vacuum chamber and the sealing ring, so that the membrane material passes through the sealing ring and fits against the curved workpiece; The pressure inside the vacuum chamber is controlled to decrease to a first preset pressure value and maintained for a first preset duration, and the pressure regulation mechanism of the housing is controlled to increase the pressure inside the sealed chamber to a second preset pressure value and maintain for a second preset duration. The pressure inside the vacuum chamber is controlled to return to the initial state, and the pressure regulation mechanism is controlled to restore the pressure inside the sealed chamber to the initial state.

12. The method for applying film to curved workpieces according to claim 10, characterized in that, The loading platform includes a loading platform body, a vacuum chamber, and a sealing ring. The loading platform body is located inside the vacuum chamber. The workpiece contouring assembly includes a workpiece contouring component and a contouring drive component. The contouring drive component is connected to the workpiece contouring component in a transmission manner. The film application mechanism also includes a sealing shell. The sealing shell is arranged around the outside of the shell assembly. The bottom surface of the sealing shell has a clearance hole for the first flexible pressure head to extend out. The bottom surface of the sealing shell is used to abut against the top surface of the vacuum chamber and the sealing ring to form a sealed cavity inside the vacuum chamber. The step of controlling the displacement mechanism to move to the film-applying platform and causing the film material to adhere to the curved workpiece includes: The displacement mechanism is controlled to drive the sealing shell to abut against the top surface of the vacuum chamber and the sealing ring, so that the membrane material passes through the sealing ring and fits against the curved workpiece; The air pressure in the vacuum chamber is controlled to decrease to a first preset air pressure value and maintained for a first preset duration. At the same time, the contouring drive is controlled to drive the workpiece contouring part to press against the first flexible pressure head, and the pressure of the membrane material on the curved workpiece is increased to a preset pressure value and maintained for a second preset duration through the first flexible pressure head. The air pressure inside the vacuum chamber is controlled to return to the initial state, and the contouring drive is controlled to drive the workpiece contouring component to move away from the first flexible pressure head.

13. The method for applying film to curved workpieces according to any one of claims 9 to 12, characterized in that, The loading platform includes a loading platform body and a vacuum adsorption mechanism. The vacuum adsorption mechanism is used to adsorb the membrane material onto the loading platform body. The step of the control displacement mechanism driving the first flexible pressure head to pick up the membrane material on the loading platform includes: The vacuum adsorption mechanism is controlled to adsorb the membrane material located on the loading platform body; The control displacement mechanism drives the first flexible pressure head to pick up the membrane material on the loading platform body; The vacuum adsorption mechanism is shut down.

14. The method for applying film to curved workpieces according to any one of claims 9 to 12, characterized in that, The curved workpiece film application equipment also includes a vision positioning mechanism, which includes a mounting frame and an image acquisition device mounted on the mounting frame. The mounting frame is connected to the housing assembly. The step of the control displacement mechanism driving the first flexible pressure head to pick up the membrane material on the loading platform includes: The control displacement mechanism drives the first flexible pressure head to move above the loading platform; The image acquisition device is controlled to acquire first image information, wherein the first image information includes first position information, and the displacement mechanism is controlled according to the first position information to drive the first flexible pressure head to pick up the membrane material on the loading platform; And / or, the step of controlling the displacement mechanism to drive the membrane material to abut against the second flexible pressure head includes: The displacement mechanism is controlled to move the membrane material above the pressing platform; The image acquisition device is controlled to acquire second image information, wherein the second image information includes second position information, and the displacement mechanism is controlled according to the second position information to drive the membrane material to abut against the second flexible pressure head; And / or, the step of controlling the displacement mechanism to move to the film-applying platform and driving the film material to adhere to the curved workpiece includes: The displacement mechanism is controlled to move the film material above the film application platform; The image acquisition device is controlled to acquire third image information, wherein the third image information includes third position information, and the displacement mechanism is controlled according to the third position information to drive the membrane material to fit with the curved workpiece.

Images