阅读说明：本技术 基于机器视觉技术的贴膜装置及其贴膜方法 (Film pasting device based on machine vision technology and film pasting method thereof ) 是由 刘哲 魏代强 蒲维新 郭丹 于 2020-12-17 设计创作，主要内容包括：本发明公开了基于机器视觉技术的贴膜装置及其贴膜方法,所述的贴膜装置由柜体、上料组件、治具组件、贴膜组件、第一机器视觉检测组件、第二机器视觉检测组件、XYZ三轴机器人、控制系统构成,上料组件用于手机膜的上料,治具组件用于手机的上料,贴膜组件用于吸取上料组件的手机膜并贴在手机上,第一机器视觉检测组件用于检测手机膜,第二机器视觉检测组件用于检测手机,XYZ三轴机器人用于贴膜组件的空间位置移动,在该贴膜装置上,通过该发明的贴膜步骤和校正方法,第一机器视觉检测组件和第二机器视觉检测组件只需要进行一次拍照就可以准确的将手机膜粘贴在手机表面,极大地提升了手机贴膜的工作效率。(The invention discloses a film sticking device based on a machine vision technology and a film sticking method thereof, wherein the film sticking device comprises a cabinet body, a feeding assembly, a jig assembly, a film sticking assembly, a first machine vision detection assembly, a second machine vision detection assembly, an XYZ three-axis robot and a control system, the feeding assembly is used for feeding a mobile phone film, the jig assembly is used for feeding the mobile phone, the film sticking assembly is used for absorbing the mobile phone film of the feeding assembly and sticking the mobile phone film on a mobile phone, the first machine vision detection assembly is used for detecting the mobile phone film, the second machine vision detection assembly is used for detecting the mobile phone, the XYZ three-axis robot is used for moving the space position of the film sticking assembly, and on the film sticking device, the first machine vision detection assembly and the second machine vision detection assembly can accurately stick the mobile phone film on the surface of the mobile phone only by taking a picture once through the film sticking step and the correction method of the invention, greatly improving the working efficiency of the mobile phone film.)

1. Pad pasting device based on machine vision technique, its characterized in that: the device comprises a cabinet body (100), a feeding assembly (200), a jig assembly (300), a film pasting assembly (400), a first machine vision detection assembly (500), a second machine vision detection assembly (600), an XYZ three-axis robot (700) and a control system;

the feeding assembly (200) is installed on the left side of the cabinet body (100), the jig assembly (300) is installed on the front position of the right side of the cabinet body (100), the XYZ three-axis robot (700) is installed on the right side of the cabinet body (100), the film pasting assembly (400) is installed below the Z axis of the XYZ three-axis robot (700), the first machine vision detection assembly (500) is installed below the middle of the cabinet body (100) and located below the film pasting assembly (400), the second machine vision detection assembly (600) is installed above the Y axis of the XYZ three-axis robot (700) and located above the jig assembly (300);

the film sticking assembly (400) is composed of a mounting bracket (410), a turntable (420) and a sucker (430), wherein the mounting bracket (410) is mounted below the Z axis of the XYZ three-axis robot (700), and the sucker (430) is mounted below the turntable (420);

the first machine vision detection assembly (500) is composed of a first camera (510), a first lens (520) and a first light source (530), the first camera (510) is installed at the lower position in the middle of the cabinet body (100), the first lens (520) is connected with the first camera (510), and the first light source (530) is installed above the first lens (520) and is located at the position below the film pasting assembly (400);

the second machine vision detection assembly (600) is composed of a second camera (610), a second lens (620) and a second light source, the second camera (610) is installed above the Y axis of the XYZ three-axis robot (700), the second lens (620) is connected with the second camera (610), and the second light source is installed in the jig assembly (300);

the control system comprises a computer, a PLC (programmable logic controller) and a light source controller, wherein the computer is connected with the PLC, the PLC is connected with the computer, the light source controller, a first camera (510), a second camera (610), a rotary disc (420) of the film sticking assembly (400) and an XYZ three-axis robot (700), and the light source controller is connected with a first light source (530) and a second light source.

2. The film laminating device based on the machine vision technology as claimed in claim 1, wherein the feeding assembly (200) is composed of a carrying support (210), a carrying device (220), a feeding box (230), a transmission line (240) and a mobile phone film flattening device (250), the carrying support (210) is mounted on the cabinet body (100) and located at the left rear position, the carrying device (220) is mounted on the carrying support (210), the feeding box (230) is mounted at the middle position of the carrying support (210), the transmission line (240) is mounted at the right side of the feeding box (230), the mobile phone film flattening device (250) is fixedly mounted at the right side of the carrying support (210), and the transmission line (240) penetrates through the mobile phone film flattening device (250).

3. The film pasting device based on machine vision technology as claimed in claim 1, wherein the suction cup (430) has a rectangular structure, the suction cup (430) has air holes, and the size of the suction cup (430) is the same as that of the mobile phone film.

4. The film laminating apparatus according to claim 1, wherein said first light source (530) is an aperture backlight and said second light source is a backlight.

5. The film laminating apparatus based on machine vision technology according to claim 1, wherein the jig assembly (300) comprises two product placement positions.

6. The film pasting method based on the visual technology is characterized in that: using the film sticking apparatus according to any one of claims 1 to 6 to perform the steps of:

step 1: loading a mobile phone film and a mobile phone, wherein the mobile phone film is placed on the loading box (230), and the mobile phone is placed in the jig component;

step 2: the mobile phone film is sucked by the sucking disc (430);

and step 3: taking a picture of the position of the mobile phone film and a picture of the position of the mobile phone;

and 4, step 4: computer image processing software calculates and processes;

and 5: the film pasting component rotates the mobile phone film to a correct angle, and the XYZ three-axis robot (700) displaces the film to a correct position;

step 6: the film sticking assembly (400) moves downwards to stick the mobile phone film on the mobile phone.

7. The film laminating method based on the machine vision technology according to claim 6, wherein: a film pasting correction process is also included between the step 4 and the step 5, and the film pasting correction process comprises the following steps:

s100: determining a standard position of a mobile phone film and a standard position of a mobile phone as reference quantities, wherein the standard position of the mobile phone film and the standard position of the mobile phone are parallel;

s200: calculating the deflection angle and the offset displacement of the mobile phone film by referring to the standard position of the mobile phone film;

s300: calculating the deflection angle and the offset displacement of the mobile phone by referring to the standard position of the mobile phone;

s400: the position of the handset membrane relative to the handset, the angle of deflection and the displacement of the deflection are calculated.

Technical Field

The invention relates to the field of machine vision detection, in particular to a film sticking device based on a machine vision technology and a film sticking method thereof.

Background

In the production life, the mobile phone plays a very important role, people increasingly depend on the mobile phone, the smart mobile phone becomes an indispensable important component in daily life, the most direct and convenient experience is brought to people in all aspects of clothes and food residences, a lot of convenience is provided for the life, along with the development of intelligent manufacturing technology, automatic equipment is more adopted in the production of the smart mobile phone by various enterprises, and some enterprises even directly introduce the whole automatic production line to complete various technological process links of the production.

The finished product of the smart phone film occupies a very important position in the production of the mobile phone, the initial finished product of the smart phone film is manually finished, the manual film is faced with the problems of low efficiency, incapability of ensuring quality, multiple objective influence factors and the like, after the machine vision technology is developed, the surface film of the mobile phone is finished by adopting a method of combining a mechanical arm and machine vision, the working efficiency and the qualified rate of the film are greatly improved relative to the manual film, a series of objective factors faced by the manual film are overcome, but the intelligentization degree is higher and higher along with the improvement and upgrading of an automatic production system, the mobile phone and the mobile phone film cannot be placed in an accurate range in the actual film sticking, the deviation adjustment of the mechanical arm is required to be carried out according to the detection result of the machine vision in the film sticking process, and because the mobile phone and the mobile phone film not only have angle deviation but also position deviation in, therefore, the machine vision is needed to take two pictures to respectively complete the adjustment of the angle deviation and the position deviation, and the film pasting mode can influence the working efficiency and cannot adapt to the requirement of intelligent production.

Disclosure of Invention

In order to solve the problem that the work efficiency is affected by the fact that two times of photographing respectively carry out angle deviation and position deviation adjustment in the production process in the background technology, the invention provides a film pasting device based on the machine vision technology and a film pasting method thereof, and aims to achieve adjustment of the angle deviation and the position deviation simultaneously through one-time photographing, improve the work efficiency and simultaneously ensure the film pasting quality of a mobile phone.

The technical scheme adopted by the invention is as follows: the invention relates to a film pasting device based on a machine vision technology and a film pasting method thereof.

The feeding assembly is installed on the left side of the cabinet body, the jig assembly is installed on the front position of the right side of the cabinet body, the XYZ three-axis robot is installed on the right side of the cabinet body, the film pasting assembly is installed on the lower position of the Z axis of the XYZ three-axis robot, the first machine vision detection assembly is installed on the lower position of the middle of the cabinet body and located on the lower position of the film pasting assembly, and the second machine vision detection assembly is installed on the Y axis of the XYZ three-axis robot and located on the upper position of the jig assembly.

The film pasting component is composed of a mounting support, a rotary table and a sucker, the mounting support is mounted below a Z shaft of the XYZ three-shaft robot, and the sucker is mounted below the rotary table.

First machine vision detection subassembly constitute by first camera, first camera lens, first light source, first camera install the lower position in the middle of the cabinet body, first camera lens connect first camera, first light source install in first camera lens top, be located pad pasting subassembly below position.

The second machine vision detection assembly is composed of a second camera, a second lens and a second light source, the second camera is installed above the Y axis of the XYZ three-axis robot, the second lens is connected with the second camera, and the second light source is installed in the jig assembly.

The control system comprises a computer, a PLC (programmable logic controller) and a light source controller, wherein the computer is connected with the PLC, the PLC is connected with the computer, the light source controller, a first camera, a second camera, a rotary disc of the film sticking assembly and the XYZ three-axis robot, and the light source controller is connected with a first light source and a second light source.

The film pasting step is as follows:

step 1: loading a mobile phone film and a mobile phone, wherein the mobile phone film is placed on the loading box (230), and the mobile phone is placed in the jig component;

step 2: the mobile phone film is sucked by the sucking disc (430);

and step 3: taking a picture of the position of the mobile phone film and a picture of the position of the mobile phone;

and 4, step 4: computer image processing software calculates and processes;

and 5: the film pasting component rotates the mobile phone film to a correct angle, and the XYZ three-axis robot (700) displaces the film to a correct position;

step 6: the film sticking assembly (400) moves downwards to stick the mobile phone film on the mobile phone.

The correction method comprises the following steps:

step 1: determining a standard position of a mobile phone film and a standard position of a mobile phone as reference quantities, wherein the standard position of the mobile phone film and the standard position of the mobile phone are parallel;

step 2: calculating the deflection angle and the offset displacement of the mobile phone film by referring to the standard position of the mobile phone film;

and step 3: calculating the deflection angle and the offset displacement of the mobile phone by referring to the standard position of the mobile phone;

and 4, step 4: the position of the handset membrane relative to the handset, the angle of deflection and the displacement of the deflection are calculated.

Further, the material loading subassembly by transport support, handling device, material loading box, transmission line, mobile phone membrane smooth the device and constitute, the transport support mounting on the cabinet body, be located left rear position, handling device install on the transport support, material loading box install the intermediate position at the transport support, the transmission line install on material loading box right side, mobile phone membrane smooth device fixed mounting on transport support right side, the transmission line passes mobile phone membrane and smoothes the device.

Furthermore, the sucking disc be the rectangle structure, have the gas pocket on the sucking disc, and the sucking disc size is the same with cell-phone membrane size.

Further, the first light source is an opening backlight source, and the second light source is a backlight source.

Further, the jig assembly comprises two product placing positions.

The invention also discloses a film pasting method based on the visual technology, which is characterized in that: any one of the film sticking devices is adopted to execute the following steps:

step 1: loading a mobile phone film and a mobile phone, wherein the mobile phone film is placed on the loading box (230), and the mobile phone is placed in the jig component;

step 2: the mobile phone film is sucked by the sucking disc (430);

and step 3: taking a picture of the position of the mobile phone film and a picture of the position of the mobile phone;

and 4, step 4: computer image processing software calculates and processes;

and 5: the film pasting component rotates the mobile phone film to a correct angle, and the XYZ three-axis robot (700) displaces the film to a correct position;

step 6: the film sticking assembly (400) moves downwards to stick the mobile phone film on the mobile phone.

As a preferable aspect of the film laminating method of the present invention, the method comprises: a film pasting correction process is also included between the step 4 and the step 5, and the film pasting correction process comprises the following steps:

s100: determining a standard position of a mobile phone film and a standard position of a mobile phone as reference quantities, wherein the standard position of the mobile phone film and the standard position of the mobile phone are parallel;

s200: calculating the deflection angle and the offset displacement of the mobile phone film by referring to the standard position of the mobile phone film;

s300: calculating the deflection angle and the offset displacement of the mobile phone by referring to the standard position of the mobile phone;

s400: the position of the handset membrane relative to the handset, the angle of deflection and the displacement of the deflection are calculated.

The invention has the beneficial effects that:

the invention relates to a film pasting device based on machine vision technology and a film pasting method thereof, wherein the film pasting device comprises a cabinet body, a feeding assembly, a jig assembly, a film pasting assembly, a first machine vision detection assembly, a second machine vision detection assembly, an XYZ three-axis robot and a control system, the feeding assembly is arranged on the left side of the cabinet body, the jig assembly is arranged at the front position on the right side of the cabinet body, the XYZ three-axis robot is arranged at the right side position of the cabinet body, the film pasting assembly is arranged at the lower position on the Z axis of the XYZ three-axis robot, the first machine vision detection assembly is arranged at the lower position in the middle of the cabinet body and is arranged at the lower position on the film pasting assembly, the second machine vision detection assembly is arranged above the Y axis of the XYZ three-axis robot and is arranged at the upper position on the jig assembly, the film pasting device is highly integrated and has extremely, the installation, the use and the maintenance are convenient, and the device can be applied to various production occasions.

According to the film sticking device and the film sticking method based on the machine vision technology, the correction method calculates the angle offset and the position offset of the mobile phone film relative to the position of the mobile phone through the picture information obtained after the first machine vision detection assembly and the second machine vision detection assembly take a picture of the mobile phone film and the mobile phone once, the problem that the angle offset and the position offset are calculated sequentially after the original automatic film sticking device of the mobile phone takes a picture twice is solved, and the working efficiency is greatly improved.

According to the film sticking device and the film sticking method based on the machine vision technology, the film sticking step executes corresponding actions according to the angle offset and the position offset calculated in the correction method, so that the mobile phone film is accurately stuck on the mobile phone, and the film sticking accuracy is guaranteed.

Drawings

FIG. 1 is a schematic three-dimensional structure diagram of a film sticking device based on machine vision according to the present invention;

FIG. 2 is a flow chart of a control system of a film sticking device based on machine vision according to the present invention;

FIG. 3 is a schematic diagram illustrating a mobile phone film calibration method of a film pasting device based on machine vision according to the present invention;

fig. 4 is a schematic diagram illustrating a mobile phone calibration method of a film sticking device based on machine vision according to the present invention.

Description of the reference numerals

100-cabinet body, 200-feeding assembly, 210-carrying support, 220-carrying device, 230-feeding box, 240-transmission line, 250-mobile phone film smoothing device, 300-jig assembly, 400-film pasting assembly, 410-mounting support, 420-turntable, 430-sucker, 500-first machine vision detection assembly, 510-first camera, 520-first lens, 530-first light source, 600-second machine vision detection assembly, 610-second camera, 620-second lens and 700-XYZ three-axis robot.

Detailed Description

The following description of the embodiments of the present invention refers to the accompanying drawings and examples:

it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are illustrative only and are not intended to limit the scope of the invention, which is defined by the claims, and it should be understood that the invention is not limited thereto.

Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship therebetween may be regarded as the scope of the present invention without substantial changes in the technical contents.

As shown in FIGS. 1-3, the present invention is embodied as follows: the film pasting device based on the machine vision technology comprises a cabinet body 100, a feeding assembly 200, a jig assembly 300, a film pasting assembly 400, a first machine vision detection assembly 500, a second machine vision detection assembly 600, an XYZ three-axis robot 700 and a control system.

As shown in fig. 1, the feeding assembly 200 is installed at the left side of the cabinet 100, the jig assembly 300 is installed at the front position of the right side of the cabinet 100, the XYZ three-axis robot 700 is installed at the right side of the cabinet 100, the film pasting assembly 400 is installed at the lower position of the Z axis of the XYZ three-axis robot 700, the first machine vision detection assembly 500 is installed at the lower position of the middle of the cabinet 100 and located at the lower position of the film pasting assembly 400, and the second machine vision detection assembly 600 is installed at the upper position of the Y axis of the XYZ three-axis robot 700 and located at the upper position of the jig assembly 300.

In the invention, the detection device comprises a cabinet 100, a feeding assembly 200, a jig assembly 300, a film sticking assembly 400, a first machine vision detection assembly 500, a second machine vision detection assembly 600 and an XYZ three-axis robot 700, wherein the feeding assembly 200 is used for feeding a mobile phone film, the jig assembly 300 is used for feeding a finished mobile phone, the film sticking assembly 400 sucks the mobile phone film and then sticks the mobile phone film to the finished mobile phone, the first machine vision detection assembly 500 is used for collecting image information of the mobile phone film, the second machine vision detection assembly 600 is used for collecting image information of the finished mobile phone, the XYZ three-axis robot 700 moves between the positions of the mobile phone film and the finished mobile phone to finish the film sticking of the finished mobile phone, and the feeding assembly 200, the jig assembly 300, the film sticking assembly 400, the first machine vision detection assembly 500, the second machine vision detection assembly 600, the jig assembly 300, the film sticking assembly 400, the second machine vision detection assembly 600, the film sticking assembly 400, the film sticking assembly, XYZ three-axis robot 700 all installs on the cabinet body 100, and this detection device simple structure, high integration, the installation is nimble convenient, can be applied to various production occasions.

As shown in fig. 1, the film pasting assembly 400 is composed of a mounting bracket 410, a turntable 420 and a suction cup 430, wherein the mounting bracket 410 is installed below the Z axis of the XYZ three-axis robot 700, and the suction cup 430 is installed below the turntable 420.

Preferably, the suction cup 430 has a rectangular structure, the suction cup 430 has an air hole, and the size of the suction cup 430 is the same as that of the mobile phone film.

In the present invention, the turntable 420 of the film sticking assembly 400 is used for adjusting the offset angle of the mobile phone film, the suction cup 430 is used for sucking the mobile phone film, when the mobile phone film is sucked, the suction device works to suck the mobile phone film through the air hole on the suction cup 430, when the mobile phone film is stuck, the suction device stops working, and the mobile phone film is stuck to the mobile phone.

As shown in fig. 1, the first machine vision inspection assembly 500 comprises a first camera 510, a first lens 520 and a first light source 530, the first camera 510 is installed at a lower position in the middle of the cabinet 100, the first lens 520 is connected to the first camera 510, and the first light source 530 is installed above the first lens 520 and below the film-sticking assembly 400.

In the invention, the first machine vision inspection assembly 500 is used for acquiring mobile phone film image information, the first lens 520 is connected with the first camera 510 to acquire the mobile phone film image information absorbed by the film pasting assembly, and the first light source 530 is positioned below the mobile phone film to provide a light source for acquiring the mobile phone film image information, so that the accuracy of an acquisition result is ensured.

The second machine vision inspection assembly 600 is composed of a second camera 610, a second lens 620 and a second light source, wherein the second camera 610 is installed above the Y axis of the XYZ three-axis robot 710, the second lens 620 is connected with the second camera 610, and the second light source is installed in the jig assembly 300.

In the present invention, the second machine vision inspection assembly 600 is used for collecting image information of a finished product mobile phone, the second light source is installed in the jig assembly 300 to provide a light source for collecting image information of a finished product mobile phone from below, and the second camera 610 is connected with the second lens 620 and installed above the Y axis of the XYZ three-axis robot 700 to complete the collection of image information of a finished product mobile phone.

As shown in fig. 2, the control system is composed of a computer, a PLC controller, and a light source controller, the computer is connected to the PLC controller, the PLC controller is connected to the computer, the light source controller, the first camera 510, the second camera 610, the turntable 420 of the film sticking assembly 400, and the XYZ three-axis robot 700, and the light source controller is connected to the first light source 530 and the second light source.

In the present invention, the computer is connected to a PLC, the PLC controls the first camera 510 connected to the first machine vision inspection assembly 500, the second camera 610 connected to the second machine vision inspection assembly 600, the turntable 420, the light source controller, and the XYZ three-axis robot 700, the light source controller controls the first light source 530 connected to the first machine vision inspection assembly 500, and the second light source connected to the second machine vision inspection assembly 600;

in the present invention, the turntable 420 is composed of a turntable assembly and a stepping motor, and the PLC controls the stepping motor to realize the precise rotation of the turntable assembly.

The film pasting step is as follows:

step 1: loading a mobile phone film and a mobile phone, wherein the mobile phone film is placed on the loading box (230), and the mobile phone is placed in the jig component;

step 2: the mobile phone film is sucked by the sucking disc (430);

and step 3: taking a picture of the position of the mobile phone film and a picture of the position of the mobile phone;

and 4, step 4: computer image processing software calculates and processes;

and 5: the film pasting component rotates the mobile phone film to a correct angle, and the XYZ three-axis robot (700) displaces the film to a correct position;

step 6: the film sticking assembly (400) moves downwards to stick the mobile phone film on the mobile phone.

In the invention, step 3, a mobile phone film position picture and a mobile phone position picture are photographed, a first machine vision detection assembly 500 photographs the mobile phone film position picture, and a second machine vision detection assembly 600 photographs the mobile phone position picture for determining a mobile phone film standard position and a mobile phone standard position; and 5, performing angle rotation and displacement movement of the mobile phone film according to the result calculated by the computer image processing software in the step 4, and placing the mobile phone film at a correct position above the mobile phone.

The correction method comprises the following steps:

step 1: determining a standard position of a mobile phone film and a standard position of a mobile phone as reference quantities, wherein the standard position of the mobile phone film and the standard position of the mobile phone are parallel;

step 2: calculating the deflection angle and the offset displacement of the mobile phone film by referring to the standard position of the mobile phone film;

and step 3: calculating the deflection angle and the offset displacement of the mobile phone by referring to the standard position of the mobile phone;

and 4, step 4: the position of the handset membrane relative to the handset, the angle of deflection and the displacement of the deflection are calculated.

In the present invention, step 1: the standard position of the mobile phone film and the standard position of the mobile phone are determined as reference quantities, wherein the standard position of the mobile phone film and the standard position of the mobile phone are parallel, the standard position of the mobile phone film, the standard position of the mobile phone and the moving distance between the standard position of the mobile phone film and the standard position of the mobile phone are known, a mobile phone film picture shot by the first machine vision detection assembly 500 comprises the standard position of the mobile phone film, mobile phone film position information and a mechanical rotation point, and a mobile phone picture shot by the second machine vision detection assembly 600 comprises the standard position of the mobile phone, mobile phone position information to be pasted with the film and the mechanical rotation point.

In the present invention, step 2: calculating the deflection angle and the offset displacement of the mobile phone film by referring to the standard position of the mobile phone film, acquiring four-side information of the standard position of the mobile phone film from a mobile phone film picture to form a mobile phone film standard rectangle, wherein the standard center position of the mobile phone film is the center of the mobile phone film standard rectangle, parallel lines parallel to the long side of the mobile phone film standard rectangle are made through the standard center point of the mobile phone film, and the included angle between the parallel lines and the diagonal line of the mobile phone film standard rectangle is the standard included angle of the mobile phone film; acquiring information of four sides of a mobile phone film position in a mobile phone film picture to form a mobile phone film rectangle, wherein the central position of the mobile phone film is the central point of the mobile phone film rectangle, parallel lines parallel to the long sides of the standard mobile phone film rectangle are made through the central point of the mobile phone film, and the included angle between the parallel lines and the diagonal line of the mobile phone film rectangle is the included angle of the mobile phone film; calculating the difference value between the standard included angle of the mobile phone film and the included angle of the mobile phone film as the angle offset of the mobile phone film;

taking the mechanical rotation point as a circle center, taking the distance from the mechanical rotation point to the mobile phone film center point as a radius to form a circle, and when the mobile phone film is rotated by taking the mechanical rotation point as the circle center, keeping the mobile phone film center point on the circle, and rotating by taking the mobile phone film angle offset value as a rotation angle to obtain a new mobile phone film center point; calculating the transverse position offset and the longitudinal position offset of the new mobile phone film central point and the mobile phone film standard central point, namely the mobile phone film position offset;

in the present invention, step 3: calculating the deflection angle and the offset displacement of the mobile phone by referring to the standard position of the mobile phone; acquiring four-side information of a standard position of the mobile phone from a mobile phone picture to form a mobile phone standard rectangle, wherein the standard center position of the mobile phone is the center of the mobile phone standard rectangle, a parallel line parallel to the long side of the mobile phone standard rectangle is made through the standard center point of the mobile phone, and the included angle between the parallel line and the diagonal line of the mobile phone standard rectangle is a mobile phone standard included angle; acquiring information of four sides of a mobile phone position in a mobile phone picture to form a mobile phone rectangle, wherein the central position of the mobile phone is the center of the mobile phone rectangle, a parallel line parallel to the long side of the mobile phone standard rectangle is made through the central point of the mobile phone, and the included angle between the parallel line and the diagonal line of the mobile phone rectangle is the included angle of the mobile phone; calculating the difference value between the standard included angle of the mobile phone and the included angle of the mobile phone to obtain the angle offset of the mobile phone; taking the mechanical rotation point as the center of a circle and the distance between the mechanical rotation point and the center point of the mobile phone as a radius to form a circle, wherein after the mobile phone is rotated by taking the mechanical rotation point as the center of a circle, the center point of the mobile phone is still on the circle, and the angle offset value of the mobile phone is taken as the rotation angle to obtain a new center point of the mobile phone; calculating the horizontal position offset and the longitudinal position offset of the new mobile phone central point and the mobile phone standard central point, namely the mobile phone position offset;

in the present invention, step 4: calculating the position, deflection angle and offset displacement of the mobile phone film relative to the mobile phone, as shown in fig. 3 and 4, wherein the offset amount in the correction method is calculated as:

step 1: the mechanical rotation point in the picture of the mobile phone film is known as the point O, and the mechanical rotation point in the picture of the mobile phone film is known as the point a.

Step 2: calculating the angle offset alpha of the mobile phone film;

obtaining the information of four sides of the standard position of the mobile phone film from the mobile phone film picture to form a standard rectangle A of the mobile phone film₁B₁C₁D₁The standard center position of the mobile phone film is the center point P of the standard rectangle of the mobile phone film, and the standard center point P of the mobile phone film is taken as a parallel line l parallel to the long side of the standard rectangle of the mobile phone film₁The parallel line l₁The included angle between the standard mobile phone film and the diagonal line of the standard mobile phone film rectangle is the standard mobile phone film included angle alpha₁；

Obtaining the information of four edges of the position of the mobile phone film from the picture of the mobile phone film to form the mobile phoneFilm rectangle A₂B₂C₂D₂The center position of the mobile phone film is a center point P 'of the mobile phone film rectangle, and a parallel line l parallel to the long side of the mobile phone film standard rectangle is made through the center point P' of the mobile phone film₂The parallel line l₂The included angle between the rectangular diagonal line of the mobile phone film and the mobile phone film is the included angle alpha of the mobile phone film₂；

Calculating the standard included angle alpha of the mobile phone film₁Included angle alpha with mobile phone film₂The difference of (a) is the angle offset α of the mobile phone film, i.e., α ═ α₁-α₂；

Calculating the position offset deltax of the mobile phone film₁And Δ y₁；

Taking the mechanical rotation point O as the center of a circle, taking the distance from the mechanical rotation point to the mobile phone film center point P 'as a radius to form a circle, and taking the mechanical rotation point O as the center of a circle to rotate the mobile phone film, wherein the mobile phone film center point is still on the circle, and alpha is taken as a rotation angle to rotate the mobile phone film to obtain a new mobile phone film center point P';

calculating the lateral position offset delta x between the new mobile phone film center point P' and the mobile phone film standard center point P₁And a longitudinal position offset amount deltay₁Amount of lateral position deviation Deltax₁Equal to the difference between the abscissas of the points P and P', by a longitudinal position shift amount Deltay₁The difference between the vertical coordinates of the point P and the point P' is equal to the position offset of the mobile phone film;

and step 3: calculating the angle offset beta of the mobile phone;

obtaining the information of four edges of the standard position of the mobile phone from the picture of the mobile phone to form a standard rectangle A of the mobile phone₃B₃C₃D₃The standard center position of the mobile phone is a center Q point of the standard rectangle of the mobile phone, and a parallel line l parallel to the long side of the standard rectangle of the mobile phone is made through the standard center point Q of the mobile phone₃The parallel line l₃The included angle between the standard mobile phone rectangle diagonal line and the standard mobile phone rectangle diagonal line is a standard mobile phone included angle beta₁；

Obtaining the information of four edges of the mobile phone position in the mobile phone picture to form a mobile phone rectangle A₄B₄C₄D₄The center of the mobile phone is the center Q 'point of the mobile phone rectangle, and the parallel line parallel to the long side of the mobile phone standard rectangle is made through the center Q' point of the mobile phonel₄The included angle between the parallel line and the rectangular diagonal line of the mobile phone is the included angle beta of the mobile phone₂；

Calculating the standard included angle beta of the mobile phone₁Form an angle beta with the mobile phone₂The difference of (b) is the mobile phone angle offset β, i.e. β ═ β₁-β₂；

Calculating the position offset deltax of the mobile phone₂And Δ y₂；

Taking the mechanical rotation point A as the center of a circle, taking the distance between the mechanical rotation point and the central point Q 'of the mobile phone as the radius to form a circle, and taking the mechanical rotation point as the center of a circle to rotate the mobile phone, wherein the central point of the mobile phone is still on the circle, and taking beta as the rotation angle to rotate the mobile phone to obtain a new central point Q' of the mobile phone;

calculating the lateral position offset delta x of the new mobile phone central point Q' and the mobile phone standard central point Q₂And a longitudinal position offset amount deltay₂Amount of lateral position deviation Deltax₂Equal to the difference between the abscissas of points Q and Q', by a longitudinal position shift amount Deltay₂The difference between the vertical coordinates of the point Q and the point Q' is equal to the mobile phone position offset;

and 4, step 4: solving the vector sum of the mobile phone film angle offset alpha and the mobile phone angle offset beta to obtain an angle offset theta which is alpha + beta; calculating the vector sum of the mobile phone film position offset and the mobile phone position offset to obtain the position offset delta x which is delta x₁+Δx₂，Δy＝Δy₁+Δy₂；

In the invention, the calculation of the offset can be completed only by taking a picture once in practical application by adopting the correction method for the angle offset and the position offset, and compared with the traditional method for calculating the angle offset and the position offset respectively by taking pictures twice, the production efficiency of the mobile phone film is greatly improved.

In the invention, the film pasting is carried out by adopting the film pasting step, so that the mobile phone film is guaranteed to be accurately pasted on the mobile phone, and the accuracy of the film pasting is improved.

Preferably, as shown in fig. 1, the feeding assembly 200 is composed of a conveying bracket 210, a conveying device 220, a feeding box 230, a transmission line 240 and a mobile phone film flattening device 250, the conveying bracket 210 is mounted on the cabinet 100 and located at the left rear position, the conveying device 220 is mounted on the conveying bracket 210, the feeding box 230 is mounted at the middle position of the conveying bracket 210, the transmission line 240 is mounted at the right side of the feeding box 230, the mobile phone film flattening device 250 is fixedly mounted at the right side of the conveying bracket 210, and the transmission line 240 penetrates through the mobile phone film flattening device 250.

Preferably, the first light source 530 is an aperture backlight, and the second light source is a backlight.

Preferably, the jig assembly 300 comprises two product placing positions, so that the next product to be pasted is placed conveniently in the product pasting process, and the work efficiency is improved.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.