TWI828441B - Optical module alignment method for automatic assembly machine - Google Patents

Abstract

The invention relates to an optical module alignment method for an automatic assembly machine, which includes: adsorbing a first correction film module with a first correction mark inside on the bottom side of an adsorption device located in a rotating platform, and recording the center position of the first lens and the coordinate value difference between the center position of the second lens, and obtain the first reference coordinate; move the second lens to the bottom side of the third lens, and move the telescopic part of the second correction film module to the second lens and the third lens Between the three lenses, the center positions of the second lens and the third lens are successively located at the coordinate positions of the four quadrants formed by the second correction mark of the telescopic part, and the second and third reference coordinates are obtained; according to the first reference coordinate , calculate the distance compensation value for the assembly area to move through the slide table to the bottom side of the adsorption device in the rotating platform where the lens barrel and multiple pieces of material are placed; and calculate the assembly area through the control unit based on the difference between the second reference coordinate and the third reference coordinate value The distance compensation value when the slide moves to the dispensing and drying position.

Description

Optical module alignment method for automatic assembly machine

The present invention provides an optical module alignment method for an automatic assembly machine. In particular, it refers to a first lens, a second lens and a third lens of an optical module installed in the machine to respectively capture the four images formed by the first and second correction marks. The coordinate positions of the quadrants can be used to obtain the first, second, and third reference coordinates. Then, according to the difference in coordinate values, the lens barrel and multiple pieces of material can be assembled, dispensed, and dried in the assembly area, and the bottom and side sliding table of the assembly area can be controlled. Compensating the movement distance can greatly improve assembly efficiency and accuracy, reduce labor and production costs, and ensure assembly quality and yield.

Press, with the rise of social networking, users’ demand for taking pictures has increased, which has gradually attracted attention to the camera function of smartphones. In order to break through the increasingly obvious homogeneity phenomenon, brand manufacturers have promoted the specification upgrade of camera modules, among which the optical The lens is not only one of the key components for differentiation of mobile phones, including pixel upgrade, optical anti-shake, large aperture and dual lenses, but also makes the optical lenses have higher and higher specifications and the number of settings is increasing, including: multi-lens, somatosensory lens (such as VR/AR), 3D sensing lenses, etc., plus diversified applications and rapid development in drones, smart homes, security monitoring, medical and other fields. With the advent of the era of Internet of Vehicles and smart driving, the application of automotive lenses will also drive the overall lens market to flourish.

Existing camera modules mainly consist of lens modules (Lens), voice coil motors (VCM), It is composed of infrared cut filter (IRCF), image sensor and other parts. The lenses are divided into glass (G) grinding, aspherical molded glass and plastic (P) lenses according to their materials. Mobile phone lenses mainly use non- Spherical plastic lenses and car lenses use glass lenses with good environmental resistance. For high-quality lens modules, in order to ensure the image quality of the actual shooting of the camera module, the positions of the various parts should be firmly fixed, so High-precision alignment must be used for assembly to ensure stable positioning of each component after assembly, effectively improving assembly yield and reducing production costs.

A general lens module includes: a lens barrel, multiple lenses, aperture plates, spacer rings and infrared cutoff filters. The assembly method is to sequentially assemble the first lens, aperture plate, second lens, spacer ring and infrared cutoff filter. After the filter is pressed into the lens barrel from the image side of the lens barrel, the infrared cut filter and the spacer ring are glued and fixed together through a dispenser. However, during the assembly process of the lens module, Through the three-axis manipulator of the assembly equipment (such as the X, Y-axis drive mechanism, Z-axis drive mechanism and the suction mechanism installed on the Z-axis drive mechanism), the pieces of material are sucked in stages and then installed in sequence on the positioning In the lens barrel on the fixture, the X, Y-axis drive mechanism and Z-axis drive mechanism need to move back and forth every time they pick up a piece of material. Such repeated movements consume a lot of time and will occupy subsequent pieces of material. The installation time results in poor overall assembly efficiency, and most of the X, Y-axis driving mechanisms and Z-axis driving mechanisms use stepper motors to drive the X-axis slide rails, Y-axis screw rods and Z-axis slide rails. It will cause the loss of the mechanism, and may easily lead to a decrease in the accuracy of the alignment center of the piece of assembly or the problem of optical axis eccentricity, and even cause a decrease in the optical performance of the lens module.

In addition, the assembly method used by the above-mentioned assembly equipment requires that after all the pieces are assembled, the optical test system can be used to measure whether the lens module has any optical axis eccentricity. As a result, the optical performance is reduced, so that high-precision alignment cannot be provided immediately during the assembly process, and the assembly yield cannot be improved, which in turn makes it difficult to reduce production costs. This needs to be effectively solved by redesign by those engaged in this industry.

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant information, and after multiple evaluations and considerations, he came up with the invention of this optical module alignment method for automatic assembly machines.

The main purpose of the present invention is to provide an optical module alignment method for an automatic assembly machine, which includes: adsorbing a first correction film module with a first correction mark inside on the bottom side of an adsorption device located in a rotating platform, and recording the first The coordinate value difference between the center position of the lens and the center position of the second lens is obtained, and the first reference coordinate is obtained; the second lens is moved to the bottom side of the third lens, and the telescopic part of the second correction film module is moved to the second Between the lens and the third lens, the center positions of the second lens and the third lens are successively positioned at the coordinate positions of the four quadrants formed by the second correction marks of the telescopic part, and the second and third reference coordinates are obtained; according to the first A reference coordinate is used to calculate the distance compensation value of the assembly area through the slide table to the bottom side of the adsorption device in the rotating platform where the lens barrel and multiple pieces of material are placed; and through the control unit, based on the difference between the second reference coordinate and the third reference coordinate value, Calculate the distance compensation value from the assembly area to the dispensing and drying position through the sliding table. By shooting the coordinate positions of the four quadrants formed by the first and second correction marks with the first lens, the second lens and the third lens of the aforementioned optical module, the first, second and third reference coordinates can be obtained, and then based on each The difference in coordinate values corresponds to the assembly, dispensing and drying of the lens barrel and multiple pieces of material in the assembly area. By controlling the sliding table at the bottom of the assembly area to compensate for the moving distance, the assembly efficiency and accuracy can be greatly improved, and the labor and time required can be reduced. Reduce production costs while ensuring assembly quality and yield.

The secondary purpose of the present invention is that the optical module further includes a fourth lens disposed on the bottom side of the rotating platform for adjusting the rotation accuracy of the rotating platform and with its shooting surface facing upward. The plurality of indicators are used as reference points, so that the fourth lens shoots and records the position difference values of the reference points at each rotation of the rotating platform and makes real-time corrections.

Another object of the present invention is that the plurality of indicators on the bottom surface of the rotating platform refer to a plurality of positioning measuring holes provided on the rotating platform.

Another object of the present invention is that the first and second correction marks of the first and second correction film modules are "L"-shaped or cross-shaped patterns, and the "L"-shaped correction mark is The corner is used as the center point; the correction mark of the cross type is based on the central intersection as the center point, and the coordinates of the four quadrants are divided by the "L" shape or the cross shape as a reference basis, so that the The coordinate values of the shooting center points of the second lens and the third lens are digitized.

Another object of the present invention is that the control unit refers to a computer with computing processing functions that is electrically connected to the machine via wires or wirelessly; or it refers to a micro control unit built in the machine with computing processing functions.

1:Working platform

11: base

12: Bracket

13: Rotating platform

131:Adsorption device

14: Optical inspection station

15:Assembly area

151:Slide

2: Optical module

21: First shot

22:Second shot

23:Third shot

24:Fourth shot

3: First correction film module

31: First correction mark

4: Second correction film module

41: base body

42:Telescopic part

421: Second correction mark

5: Lens module

51:Fragments

52: Lens tube

53:Lock firmware

Step 61: The first correction film module with the first calibration mark inside is adsorbed on the bottom side of the adsorption device located in the rotating platform, and the first correction film module is brought into the third correction film module by rotating the rotating platform. After shooting the shooting range of a lens, the center position of the first lens is located at the coordinate position of the four quadrants formed by the first correction mark, and then the first correction film module is rotated through the rotating platform, and The slide is driven to move the second lens to the bottom side of the rotation path of the first correction film module. After shooting, the center position of the second lens is located at the coordinate position of the four quadrants formed by the first correction mark. , and record the coordinate value difference between the center position of the first lens and the center position of the second lens within the shooting range of the second lens, and obtain the first reference coordinates

Step 62: Drive the slide table to move the second lens to the bottom side of the third lens, and move the telescopic part of the second correction film module to between the second lens and the third lens, First, let the second lens photograph the second correction mark of the telescopic part to obtain the coordinates of the four quadrants formed by the second correction mark of the telescopic part where the center position of the second lens is located. position, and stop shooting the second lens after obtaining the second reference coordinates

Step 63: Continue to use the third lens to photograph the second correction mark of the telescopic part to obtain the coordinate position of the center position of the third lens located in the four quadrants formed by the second correction mark of the telescopic part, and Obtain the third reference coordinate

Step 64: Calculate the distance compensation value of the assembly area through the sliding table to the bottom side of the adsorption device in the rotating platform where the lens barrel and the pieces of material are placed based on the first reference coordinate through a control unit; and Through the control unit, the distance compensation value of the assembly area moved to the dispensing and drying position through the slide table is calculated based on the difference between the second reference coordinate and the third reference coordinate value.

Step 71: The first correction film module with the first calibration mark inside is adsorbed on the bottom side of the adsorption device located in the rotating platform, and the first correction film module is brought into the third through the rotation of the rotating platform. After shooting the shooting range of a lens, the center position of the first lens is located at the coordinate position of the four quadrants formed by the first correction mark, and then the first correction film module is rotated through the rotating platform, and The slide is driven to move the second lens to the bottom side of the rotation path of the first correction film module. After shooting, the center position of the second lens is located at the coordinate position of the four quadrants formed by the first correction mark. , and record the coordinate value difference between the center position of the first lens and the center position of the second lens within the shooting range of the second lens, and obtain the first reference coordinates

Step 72: Drive the slide table to move the second lens to the bottom side of the third lens, and move the telescopic part of the second correction film module to between the second lens and the third lens, First, let the third lens photograph the second correction mark of the telescopic part to obtain the coordinates of the four quadrants formed by the second correction mark of the telescopic part where the center position of the third lens is located. position, and stop shooting the third lens after obtaining the third reference coordinates

Step 73: Continue to use the second lens to capture the second correction mark of the telescopic part to obtain the coordinate position of the center position of the second lens located in the four quadrants formed by the second correction mark of the telescopic part, and Obtain the second reference coordinates

Step 74: Calculate the distance compensation value of the assembly area through the slide table to the bottom side of the adsorption device in the rotating platform where the lens barrel and the pieces of material are placed according to the first reference coordinate through a control unit; and Through the control unit, the distance compensation value of the assembly area moved to the dispensing and drying position through the slide table is calculated based on the difference between the second reference coordinate and the third reference coordinate value.

[Figure 1] is a three-dimensional appearance view of the automatic assembly machine of the present invention.

[Figure 2] is a partial three-dimensional appearance view of the automatic assembly machine of the present invention.

[Figure 3] is a partial three-dimensional exploded view of the automatic assembly machine of the present invention.

[Figure 4] is an exploded three-dimensional view of the lens module of the present invention.

[Figure 5A] is a schematic diagram of the first action of obtaining the first reference coordinate of the present invention.

[Figure 5B] is a schematic diagram of the second action of obtaining the first reference coordinate of the present invention.

[Figure 5C] is a schematic diagram of the first action of obtaining the second and third reference coordinates of the present invention.

[Figure 5D] is a schematic diagram of the second action of obtaining the second and third reference coordinates of the present invention.

[Figure 6] is a flow chart of the first step of the optical module alignment method of the automatic assembly machine of the present invention.

[Figure 7] is a flow chart of the second step of the optical module alignment method of the automatic assembly machine of the present invention.

In order to achieve the above objects and effects, the technical means and structures adopted by the present invention are described in detail below with respect to the preferred embodiments of the present invention, so as to facilitate a complete understanding.

Please refer to the invention patent of the Republic of China Announcement No. I705277B "Assembling Equipment for Rotating Materials". This approved invention patent was previously applied by the applicant of this case, and it disclosed organizations related to this case, such as: work platform ( 1), rotating retrieval mechanism (2), feeding area (3), working area (4), blanks (5) and components (6). In this case, there are multiple optical lenses in the working area (4) , and cooperate with the two correction film modules and the rotating pickup mechanism (2) to perform the reset operation of the new machine before operation, rather than the optical module alignment related mechanisms (such as the feeding area (3) ) and the work area (4) other detailed components), which are not disclosed in detail unless they are technical features of this case, are hereby stated.

Please refer to Figures 1 to 4, which are respectively a three-dimensional appearance view, a partial three-dimensional appearance view and a partial three-dimensional exploded view of the automatic assembly machine of the present invention. It can be clearly seen from the figures that the automatic assembly machine of the present invention mainly includes: a working platform 1 , optical module 2, first correction film module 3, second correction film module 4 and lens module 5, and the connection relationship and detailed structure of each mechanism are as follows:

The automatic assembly machine is a rotating platform 13 with a plurality of adsorption devices 131 installed on the bracket 12 above the base 11 of the working platform 1, and an optical inspection station 14 and an assembly area are provided around the rotating platform 13 in sequence according to the direction of rotation. 15. A sliding table 151 is provided on the bottom side of the assembly area 15 for precise distance adjustment in the X and Y axis directions, and an optical module 2 capable of capturing images is provided around the rotation path of the rotating platform 13. The optical module 2 includes: a first lens 21 located at the optical inspection station 14 for detecting whether the plurality of pieces 51 of the lens module 5 are defective and with its shooting surface facing upward; a first lens 21 located on the assembly area 15 and used for The second lens 22 is used as a calibration reference and its shooting surface faces upward; it is arranged above the second lens 22 and is located at the assembly position of the lens barrel 52 of the lens module 5 and the sheets 51 and its shooting surface faces downward. The third lens 23, and the first correction film module 3 in the form of a sheet is adsorbed on the bottom side of the adsorption device 131 of the rotating platform 13, and the first correction film module 3 has a first correction mark 31; The second correction film module 4 is located on the assembly area 15 and is located on one side of the second lens 22. The second correction film module 4 includes a base 41 and a telescopic portion 42 on its top side. There is a second correction mark 421.

The above-mentioned optical module 2 further includes a fourth lens 24 disposed on the bottom side of the rotating platform 13 for adjusting the rotation accuracy of the rotating platform 13 and with its shooting surface facing upward. A plurality of indicators (not shown in the figure) are used as reference points, so that the fourth lens 24 captures and records the position difference values of the reference points at each rotation of the rotating platform 13 and makes real-time corrections, and the bottom surface of the rotating platform 13 The plural indicators refer to the plural positioning measuring holes (not shown in the figure) set on the rotating platform.

The first and second correction marks (31, 421) of the above-mentioned first and second correction film modules (3, 4) refer to "L"-shaped or cross-shaped patterns, and the "L"-shaped The correction mark is centered on the corner; the correction mark of the cross is centered on the central intersection. point, and divide the four quadrant coordinates through the "L" shape or cross shape and use it as a reference basis, so that the shooting center point coordinates of the second lens 22 and the third lens 23 can be digitized.

The lens barrel 52 of the above-mentioned lens module 5 is further provided with a product feature for finding its center point, and the product feature refers to a black and white interlaced annular pattern built into the lens barrel 52, and the lens After assembling the pieces of material 51, the barrel 52 is further provided with a locking member 53 at the opening that is locked to the lens barrel 52 to form a closed structure; and the outside of the first lens 21 is further provided with a lighted shooting range. Light source module (not shown in the figure); the other pieces 51 refer to lenses, aperture plates, spacer rings and infrared cut-off filters made of plastic or glass, and light shielding plates are selectively added according to different processes.

Please refer to Figures 5A to 5D and Figure 6, which are respectively the first and second action schematic diagrams of obtaining the first reference coordinates of the present invention; the first and second action schematic diagrams of obtaining the second and third reference coordinates; and the optical model of the automatic assembly machine. A flowchart of the first step of the alignment method. Figures 5A to 5D are all viewed from a bird’s eye view. Figure 6 reveals the following steps of the optical alignment method:

Step 61: The first correction film module 3 with the first correction mark 31 inside is adsorbed on the bottom side of the adsorption device 131 located in the rotating platform 13, and the first correction film module is rotated through the rotating platform 13. Group 3 brings into the shooting range of the first lens 21, and after shooting, the center position of the first lens 21 is located in the coordinate position of the four quadrants formed by the first correction mark 31, and then rotates through the rotating platform 13 Move the first correction film module 3 and drive the slide 151 to move the second lens 22 to the bottom side of the rotation path of the first correction film module 3, and obtain the center position of the second lens 22 after shooting. Fall within the coordinate positions of the four quadrants formed by the first correction mark 31 and the shooting range of the second lens 22 and record the coordinate value difference between the center position of the first lens 21 and the center position of the second lens 22, and Obtain the first reference coordinates.

The coordinates of the center position of the first lens 21 and the center position of the second lens 22 Value difference, for example, if the center position of the first lens 21 is located at the first quadrant coordinate value (1,1), and the center position of the second lens 22 is located at the center coordinate value (0,0) of the second axis, that is The coordinate value difference of the first reference coordinate can be obtained as +1 on the X-axis and +1 on the Y-axis.

Step 62: Drive the slide 151 to move the second lens 22 to the bottom side of the third lens 23, and move the telescopic portion 42 of the second correction film module 4 to the second lens 22 and the second lens 23. Before the third lens 23, the second lens 22 is first used to photograph the second correction mark 421 of the telescopic part 42, so as to obtain the second correction mark 421 where the center position of the second lens 22 is located on the telescopic part 42. After the coordinate positions of the four quadrants are formed and the second reference coordinates are obtained, shooting by the second lens 22 is stopped.

Step 63: Continue to use the third lens 23 to photograph the second correction mark 421 of the telescopic part 42 to obtain the four positions formed by the second correction mark 421 where the center of the third lens 23 is located on the telescopic part 42. The coordinate position of the quadrant, and the third reference coordinate is obtained.

In the above steps 62 and 63, the coordinate value difference between the center position of the second lens 22 and the center position of the third lens 23, for example, if the center position of the second lens 22 falls on the X-axis coordinate value (-1,0) , and the center position of the third lens 23 is located at the center coordinate value (0,0) of the two axes, it can be obtained that the coordinate value difference between the second and third reference coordinates is -1 on the X-axis and 0 on the Y-axis.

Step 64: Calculate, through a control unit (not shown) based on the first reference coordinates, that the assembly area moves through the sliding table 151 to the bottom side of the adsorption device 131 in the rotating platform 13 to place the lens barrel and the The distance compensation value of these pieces of material is as described in step 61 above. The X-axis of the distance compensation value is +1 and the Y-axis is +1, which means that the slide table 151 needs to move 1mm (millimeters) in the positive direction of the X-axis and Move 1mm (millimetre) in the positive direction of the Y-axis; and use the control unit to calculate the movement of the assembly area to the dispensing and drying position through the slide based on the difference between the second reference coordinate and the third reference coordinate value. The distance compensation value, as described in step 63 above, the X-axis of the distance compensation value is -1 and the Y-axis is 0, which means that the slide 151 only needs to move 1 mm (millimetre) in the negative direction of the X-axis. Furthermore, the control unit (not shown in the figure) refers to a computer (which can be a desktop computer (PC) or a notebook computer (NB)) with computing processing functions that is electrically connected to the machine through wired or wireless connections. ; Or it refers to a Micro Controller Unit (MCU) built into the machine with computing and processing functions.

Please refer to Figure 7, which is a flow chart of the second step of the optical module alignment method of the automatic assembly machine of the present invention. In steps 62 and 63 disclosed in Figure 6 above, the second lens 22 or the third lens 23 The order of photographing the second correction marks 421 of the telescopic part 42 can be reversed, and the second reference coordinates and the third reference coordinates can also be obtained. Such simple step changes should be included in the protection scope of the present invention, so Figure 7 discloses the following: Optical alignment method steps:

Step 71: The first correction film module 3 with the first correction mark 31 inside is adsorbed on the bottom side of the adsorption device 131 located in the rotating platform 13, and the first correction film module is rotated through the rotating platform 13. Group 3 brings into the shooting range of the first lens 21, and after shooting, the center position of the first lens 21 is located in the coordinate position of the four quadrants formed by the first correction mark 31, and then rotates through the rotating platform 13 Move the first correction film module 3 and drive the slide 151 to move the second lens 22 to the bottom side of the rotation path of the first correction film module 3, and obtain the center position of the second lens 22 after shooting. Fall within the coordinate positions of the four quadrants formed by the first correction mark 31 and the shooting range of the second lens 22 and record the coordinate value difference between the center position of the first lens 21 and the center position of the second lens 22, and Obtain the first reference coordinates.

Step 72: Drive the sliding table 151 to move the second lens 22 to the bottom side of the third lens 23, and move the telescopic portion 42 of the second correction film module 4 to the second lens 22 and the bottom side of the third lens 23. Between the third lens 23 and the third lens 23 , first let the third lens 23 capture the second correction record of the telescopic part 42 . No. 421 to obtain the coordinate position of the four quadrants formed by the second correction mark 421 of the telescopic portion 42 where the center position of the third lens 23 is located, and stop shooting by the third lens 23 after obtaining the third reference coordinates. .

Step 73: Continue to use the second lens 22 to photograph the second correction mark 421 of the telescopic part 42 to obtain the four positions formed by the second correction mark 421 where the center of the second lens 22 is located on the telescopic part 42. The coordinate position of the quadrant, and obtain the second reference coordinate.

Step 74: Calculate the distance compensation value of the assembly area through the slide table to the bottom side of the adsorption device in the rotating platform where the lens barrel and the pieces of material are placed based on the first reference coordinate through a control unit; and Through the control unit, the distance compensation value of the assembly area moved to the dispensing and drying position through the slide table is calculated based on the difference between the second reference coordinate and the third reference coordinate value.

The main technical feature of the optical module alignment method of the automatic assembly machine of the present invention is that the first lens 21, the second lens 22 and the third lens 23 of the optical module 2 installed in the machine capture the first and second calibration marks respectively. The coordinate positions of the four quadrants formed by (31, 421) can be used to obtain the first, second, and third reference coordinates, and then the lens barrel and multiple pieces of material are assembled, dispensed, and baked in the assembly area 15 according to the difference in coordinate values. In dry operation, by controlling the sliding table 151 at the bottom of the assembly area 15 to compensate for the moving distance, the assembly efficiency and accuracy can be greatly improved, and labor and production costs can be reduced, while ensuring the quality and yield of the assembly. The alignment method provided by the present invention can be used in the reset operation of new machines that produce lens modules before operation. It has excellent practicability, so a patent application was filed to seek patent protection.

The above are only preferred embodiments of the present invention, which do not limit the patent scope of the present invention. Therefore, simple modifications and equivalents can be made by using the contents of the description and drawings of the present invention. Structural changes shall be similarly included in the patent scope of the present invention and shall be stated together.

To sum up, the optical module alignment method of the automatic assembly machine of the present invention can indeed achieve its effect and purpose when used. Therefore, the present invention is an invention with excellent practicality and meets the application requirements for an invention patent. , I have filed an application in accordance with the law and hope that the review committee will approve this case as soon as possible to protect the inventor's hard work on research and development. If the review committee of the Jun Bureau has any doubts, please feel free to write a letter for instructions. The inventor will try his best to cooperate. I feel that it will be convenient.

Step 61: The first correction film module with the first calibration mark inside is adsorbed on the bottom side of the adsorption device located in the rotating platform, and the first correction film module is brought into the third correction film module by rotating the rotating platform. After shooting the shooting range of a lens, the center position of the first lens is located at the coordinate position of the four quadrants formed by the first correction mark, and then the first correction film module is rotated through the rotating platform, and The slide is driven to move the second lens to the bottom side of the rotation path of the first correction film module. After shooting, the center position of the second lens is located at the coordinate position of the four quadrants formed by the first correction mark. , and record the coordinate value difference between the center position of the first lens and the center position of the second lens within the shooting range of the second lens, and obtain the first reference coordinates

Step 62: Drive the slide table to move the second lens to the bottom side of the third lens, and move the telescopic part of the second correction film module to between the second lens and the third lens, First, let the second lens photograph the second correction mark of the telescopic part to obtain the coordinate position of the center position of the second lens located in the four quadrants formed by the second correction mark of the telescopic part, and obtain the third Stop shooting the second shot after the second reference coordinate

Step 63: Continue to use the third lens to photograph the second correction mark of the telescopic part to obtain the coordinate position of the center position of the third lens located in the four quadrants formed by the second correction mark of the telescopic part, and Obtain the third reference coordinate

Step 64: Use a control unit to calculate the distance from the assembly area to the bottom side of the adsorption device in the rotating platform where the lens barrel and the pieces of material are placed through the sliding table based on the first reference coordinates. Compensation value; and use the control unit to calculate the distance compensation value for the assembly area to move to the dispensing and drying position through the slide table based on the difference between the second reference coordinate and the third reference coordinate value.

Claims (10)

An optical module alignment method for an automatic assembly machine is applied to the resetting operation of a new machine before operation. The automatic assembly machine is a rotating platform with multiple adsorption devices installed on the bracket above the base of the work platform, and An optical inspection station and an assembly area are arranged around the rotating platform in sequence according to the direction of rotation, and a sliding table that can perform precise distance adjustment in the X and Y axis directions is provided on the bottom side of the assembly area, and the rotation path of the rotating platform Optical modules that can capture images are provided at the periphery. The optical modules include: a first lens located at the optical inspection station for detecting whether the plurality of pieces of the lens module are defective and with the shooting surface facing upward; The second lens is arranged on the assembly area and used as a calibration reference with its shooting surface facing upward; it is arranged above the second lens and is located at the assembly position of the lens barrel of the lens module and the pieces of film and shoots The third lens faces downward, and the first correction film module in the form of a sheet is adsorbed on the bottom side of the adsorption device of the rotating platform, and the first correction film module has a first correction mark; it is arranged in the assembly area and a second correction film module located on one side of the second lens. The second correction film module includes a base body and a telescopic portion on its top side. The telescopic portion has a second correction mark, and each lens The alignment method includes the following steps: A1. The first correction film module with the first correction mark inside is adsorbed on the bottom side of the adsorption device located in the rotating platform, and the first correction film module is rotated by the rotating platform. The film module is brought into the shooting range of the first lens, and after shooting, the coordinate position of the center position of the first lens located in the four quadrants formed by the first correction mark is obtained, and then the rotating platform is rotated to rotate the first lens. A correction film module, and drive the slide table to move the second lens to the bottom side of the rotation path of the first correction film module, and after shooting, the center position of the second lens is located at the first correction mark. Form the coordinate positions of the four quadrants, and record the coordinate value difference between the center position of the first lens and the center position of the second lens within the shooting range of the second lens, and obtain the first reference coordinates; A2. Drive the slide table to move the second lens to the bottom side of the third lens, and move the telescopic part of the second correction film module to between the second lens and the third lens. First Let the second lens photograph the second correction mark of the telescopic part to obtain the coordinate position of the center position of the second lens located in the four quadrants formed by the second correction mark of the telescopic part, and obtain the second Stop shooting the second shot after referencing the coordinates; A3. Continue to use the third lens to photograph the second correction mark of the telescopic part to obtain the coordinate position of the center position of the third lens located in the four quadrants formed by the second correction mark of the telescopic part, and obtain There is a third reference coordinate; and A4. Use a control unit to calculate the distance compensation value of the lens barrel and the pieces of material when the assembly area moves through the slide table to the bottom side of the adsorption device in the rotating platform based on the first reference coordinate; and through The control unit calculates a distance compensation value for the assembly area to move to the dispensing and drying position through the slide table based on the difference between the second reference coordinate and the third reference coordinate value. The optical module alignment method of an automatic assembly machine as described in claim 1, wherein the optical module further includes a device disposed on the bottom side of the rotating platform for adjusting the rotation accuracy of the rotating platform with its shooting surface facing upward. The fourth lens uses a plurality of indicators provided on the bottom surface of the rotating platform as reference points, so that the fourth lens records the position difference values of the reference points at each rotation of the rotating platform and makes real-time corrections. The optical module alignment method of an automatic assembly machine as described in claim 2, wherein the plurality of indicators on the bottom surface of the rotating platform refer to a plurality of positioning measuring holes provided on the rotating platform. The optical module alignment method of an automatic assembly machine as described in claim 1, wherein the first and second correction marks of the first and second correction film modules refer to "L"-shaped or cross-shaped patterns, The correction mark of the "L" shape has the corner as the center point; the correction mark of the cross shape has the central intersection as the center point, and is divided into four parts by the "L" shape or the cross shape. Quadrant coordinates are used as a reference basis, so that the shooting center point coordinates of the second lens and the third lens can be digitized. The optical module alignment method of an automatic assembly machine as described in claim 1, wherein the control unit refers to a computer with computing processing functions that is electrically connected to the machine via wires or wirelessly; or it refers to a computer built into the machine. The platform has a microcontroller unit with computing processing functions. The optical module alignment method of the automatic assembly machine as described in claim 1, wherein the lens module is further provided with a product feature for finding its center point inside the lens barrel, and the product feature refers to the built-in The lens barrel has an interlaced ring pattern of black and white, and after assembling the pieces of material, the lens barrel is further provided with a locking piece at the opening that is locked to the lens barrel to form a sealed structure; and the outside of the first lens is further A light source module is provided to provide an illuminated shooting range; and these materials refer to lenses, aperture sheets, spacer rings and infrared cut-off filters made of plastic or glass, and light shielding sheets are selectively added according to different processes. . An optical module alignment method for an automatic assembly machine is applied to the resetting operation of a new machine before operation. The automatic assembly machine is a rotating platform with multiple adsorption devices installed on the bracket above the base of the work platform, and An optical inspection station and an assembly area are arranged around the rotating platform in sequence according to the direction of rotation, and a sliding table that can perform precise distance adjustment in the X and Y axis directions is provided on the bottom side of the assembly area, and the rotation path of the rotating platform Optical modules that can capture images are set up around the perimeter. The optical modules include: located at the optical detection station for The first lens that detects whether multiple pieces of the lens module are defective and has its shooting surface facing upward; the second lens that is installed on the assembly area and used as a calibration standard and has its shooting surface facing upward; the second lens that is installed on the second The third lens is above the lens and located at the assembly position of the lens barrel of the lens module and the sheets of film, with its shooting surface facing downwards, and the first correction film in the form of a sheet is adsorbed on the bottom side of the adsorption device of the rotating platform Module, the first correction film module has a first correction mark; a second correction film module is provided on the assembly area and located on one side of the second lens, the second correction film module includes a base and a telescopic part on its top side, the telescopic part has a second correction mark, and each lens alignment method includes the following steps: B1. The first correction film module with the first calibration mark inside is adsorbed on the bottom side of the adsorption device located in the rotating platform. The first correction film module is brought into the first correction film module through the rotation of the rotating platform. After shooting the shooting range of the lens, the coordinate position of the center position of the first lens located in the four quadrants formed by the first correction mark is obtained, and then the first correction film module is rotated through the rotating platform and driven The slide is used to move the second lens to the bottom side of the rotation path of the first correction film module, and after shooting, the center position of the second lens is located at the coordinate position of the four quadrants formed by the first correction mark, And within the shooting range of the second lens, record the coordinate value difference between the center position of the first lens and the center position of the second lens, and obtain the first reference coordinates; B2. Drive the slide table to move the second lens to the bottom side of the third lens, and move the telescopic part of the second correction film module to between the second lens and the third lens. First Let the third lens photograph the second correction mark of the telescopic part to obtain the coordinate position of the center position of the third lens located in the four quadrants formed by the second correction mark of the telescopic part, and obtain the third Stop shooting the third lens after referencing the coordinates; B3. Continue to use the second lens to photograph the second correction mark of the telescopic part to obtain the coordinate position of the center position of the second lens located in the four quadrants formed by the second correction mark of the telescopic part, and obtain There is a second reference coordinate; and B4. Use a control unit to calculate the distance compensation value of the lens barrel and the pieces of material when the assembly area moves through the slide table to the bottom side of the adsorption device in the rotating platform based on the first reference coordinate; and through The control unit calculates a distance compensation value for the assembly area to move to the dispensing and drying position through the slide table based on the difference between the second reference coordinate and the third reference coordinate value. The optical module alignment method of an automatic assembly machine as described in claim 7, wherein the optical module further includes a device disposed on the bottom side of the rotating platform for adjusting the rotation accuracy of the rotating platform with its shooting surface facing upward. The fourth lens uses a plurality of indicators provided on the bottom surface of the rotating platform as reference points, so that the fourth lens records the position difference values of the reference points at each rotation of the rotating platform and makes real-time corrections. The optical module alignment method of an automatic assembly machine as described in claim 8, wherein the plurality of indicators on the bottom surface of the rotating platform refer to a plurality of positioning measuring holes provided on the rotating platform. The optical module alignment method of an automatic assembly machine as described in claim 7, wherein the first and second correction marks of the first and second correction film modules refer to "L"-shaped or cross-shaped patterns, The correction mark of the "L" shape has the corner as the center point; the correction mark of the cross shape has the central intersection as the center point, and is divided into four parts by the "L" shape or the cross shape. Quadrant coordinates are used as a reference basis, so that the shooting center point coordinates of the second lens and the third lens can be digitized.

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