Automatic focusing device for optical lens

Abstract

The utility model relates to an optical lens automatic focusing device which comprises a base and a product fixing module, a product driving module and a dispensing module which are installed on the base, the product driving module comprises an embedding module and a rotating module, the product fixing module is used for fixing a product, the embedding module is used for clamping a lens of the product, and the rotating module is used for rotating the lens of the product. The rotating module is connected to the embedding module, the rotating module can drive the embedding module to rotate so as to complete focusing operation of a lens of the product, and the dispensing module is used for dispensing the product and curing glue at a dispensing position. The focusing equipment can automatically finish focusing, dispensing and curing of the product, and improves the production efficiency of product focusing and the qualified rate of the product.

Description

Technical Field

[0001] The present application relates to the field of optical technology, and in particular to an automatic focusing device for an optical lens. Background Art

[0002] To help users capture images, portable electronic devices such as smartphones and tablets typically require camera modules, or optical lenses. To minimize the size of portable electronic devices, once the camera module is installed, it cannot be focused, thus utilizing a fixed-focus camera module. Currently, manual focus adjustment is often used, resulting in low efficiency, high labor costs, and low precision, making it unsuitable for large-scale industrial production. Utility Model Content

[0003] In order to overcome the above-mentioned defects, the present application provides an optical lens automatic focusing device, which can automatically complete the focusing, dispensing and curing of the product, thereby improving the production efficiency of product focusing and the product qualification rate.

[0004] The technical solution adopted by this application to solve its technical problems is:

[0005] An optical lens automatic focusing device includes a base and a product fixing module, a product driving module and a dispensing module installed on the base. The product driving module includes a mosaic module and a rotating module. The product fixing module is used to fix the product, the mosaic module is used to clamp the lens of the product, the rotating module is connected to the mosaic module, and the rotating module can drive the mosaic module to rotate to complete the focusing operation of the lens of the product. The dispensing module is used to dispense glue to the product and solidify the glue at the dispensing position.

[0006] Optionally, a support plate is fixed on the base, and the product fixing module and the product driving module are installed on the support plate.

[0007] Optionally, the product fixing module includes a support platform, a pressing module and an optical fiber sensor. The product is placed on the support platform. The pressing module is used to press and fix the product, and the optical fiber sensor is used to sense the position of the product.

[0008] Optionally, a fixing column is fixed on the support platform, and a fixing groove is provided on the product. The fixing column can be inserted into the fixing groove to quickly position the product. The clamping module includes a driving cylinder, a connecting plate and a clamping block. The first end of the connecting plate is fixedly connected to the driving cylinder, and the second end of the connecting plate is fixedly connected to the clamping block. The driving cylinder can drive the clamping block to move up and down.

[0009] Optionally, the interlocking module includes a telescopic cylinder, a clamping piece and a rotating disk, the rotating disk is rotatably mounted on the support platform, the clamping piece is axially movable and circumferentially fixedly mounted on the rotating disk, the telescopic cylinder is connected to the clamping piece, and the telescopic cylinder can drive the clamping piece to run axially along the rotating disk.

[0010] Optionally, a clamping claw is provided on the clamping member, the clamping member is axially movably connected to the rotating disk through a sliding pair, the clamping member is circumferentially fixedly installed on the rotating disk through a clamping tooth, and a spring is provided between the telescopic cylinder and the clamping member.

[0011] Optionally, the rotating module includes a servo motor and a gapless gear, the servo motor is connected to the gapless gear to drive the gapless gear to rotate, and the gapless gear is connected to the rotating disk to drive the rotating disk to rotate synchronously.

[0012] Optionally, the dispensing module includes a bracket, a dispensing valve, upper and lower cylinders, a horizontal cylinder and a UV curing module, the bracket is fixedly mounted on the base, the horizontal cylinder is mounted on the bracket, the upper and lower cylinders and the UV curing module are mounted on the horizontal cylinder, the dispensing valve is mounted on the upper and lower cylinders, and the upper and lower cylinders can drive the dispensing valve to move up and down, and the UV curing module cures the glue by an LED lamp with a UV light source.

[0013] Optionally, a product conduction module and a lighting module are also installed on the base. The product conduction module is used to connect the product to the FPC cable, and the lighting module is used to provide a light source to cooperate with the focusing operation of the product driving module.

[0014] The beneficial effects of this application are as follows: a product fixing module is used to fix the product, which is a camera module; a chimeric module clamps the lens in the product; a rotating module drives the chimeric module to rotate, thereby driving the lens to rotate to complete the lens focusing operation; a dispensing module dispenses glue on the focused lens and cures the glue to fix the position of the lens and the product, thereby obtaining a fixed-focus camera module. This application can automatically complete the focusing, dispensing, and curing of the product, thereby improving the production efficiency of product focusing and the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the focusing device in this application;

[0016] Figure 2 for Figure 1 Exploded view at point A in the middle;

[0017] Figure 3This is one of the structural diagrams of the product fixed module and product driving module in this application;

[0018] Figure 4 This is the second structural diagram of the product fixed module and product driving module in this application;

[0019] Figure 5 This is an exploded view of the product fixed module and product driving module in this application;

[0020] Figure 6 This is a partial exploded view of the product fixing module and product driving module in this application;

[0021] In the figure: 100-base, 101-support plate, 200-product fixing module, 210-support table, 211-fixed column, 220-pressing module, 221-driving cylinder, 222-connecting plate, 223-pressing block, 230-optical fiber sensor, 240-product, 241-fixing groove, 300-product driving module, 310-fitting module, 311-telescopic cylinder, 312-clamping part, 313-claw, 314-rotating disk, 320-rotating module, 321-servo motor, 322-clearance gear, 400-dispensing module, 410-bracket, 420-dispensing valve, 430-upper and lower cylinders, 440-horizontal cylinder, 450-UV curing module, 500-product conduction module, 600-light module. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described in this application are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the following drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] Example: Figure 1-5 As shown, an optical lens automatic focusing device includes a base 100 and a product fixing module 200, a product driving module 300 and a dispensing module 400 installed on the base 100, the product driving module 300 includes a mosaic module 310 and a rotating module 320, the product fixing module 200 is used to fix the product 240, the mosaic module 310 is used to clamp the lens of the product 240, the rotating module 320 is connected to the mosaic module 310, and the rotating module 320 can drive the mosaic module 310 to rotate, and when the mosaic module 310 rotates, it drives the lens of the product 240 to rotate to complete the focusing operation of the lens of the product 240, and the dispensing module 400 is used to dispense glue to the product 240 and solidify the glue at the dispensing position.

[0026] When the lens of product 240 is focused, the glue dispensing module 400 applies glue at the junction of the lens and product 240 and fixes the glue. In this application, the product fixing module 300 is used to fix the product. The product is a camera module. The interlocking module 310 clamps the lens in the product. The rotating module 320 drives the interlocking module 310 to rotate, and then drives the lens to rotate to complete the focusing operation of the lens. The glue dispensing module 400 dispenses glue on the focused lens and solidifies the glue to fix the position of the lens and the product, thereby obtaining a fixed-focus camera module. This application can automatically complete the focusing, glue dispensing and curing of the product, thereby improving the production efficiency of product focusing and the product qualification rate.

[0027] like Figure 1 and Figure 3As shown, the base 100 is fixed with a support plate 101, and the product fixing module 200 and the product driving module 300 are installed on the support plate 101. The fitting module 310 and the rotating module 320 are both installed in the vertical direction of the support plate 101, and the product fixing module 200 is installed in the horizontal direction of the support plate 101.

[0028] like Figure 3 As shown, the product fixing module 200 includes a support platform 210, a pressing module 220 and an optical fiber sensor 230. The product 240 is placed on the support platform 210. The pressing module 220 is used to press and fix the product 240. The optical fiber sensor 230 is used to sense the position of the product 240.

[0029] like Figure 4-6 As shown, the support platform 210 is fixed with a fixing column 211, and the product 240 is provided with a fixing groove 241. The fixing column 211 can be inserted into the fixing groove 241 to quickly position the product 240. The pressing module 220 includes a driving cylinder 221, a connecting plate 222, and a pressing block 223. The first end of the connecting plate 222 is fixedly connected to the driving cylinder 221, and the second end of the connecting plate 222 is fixedly connected to the pressing block 223. The driving cylinder 221 can drive the pressing block 223 to move up and down. When the product 240 is placed on the support platform 210, the fixing column 211 is inserted into the fixing groove 241 to quickly position the product 240 on the support platform 210. Then, the driving cylinder 221 drives the pressing block 223 downward until the pressing block 223 presses the product 240 from above, thereby fixing the product 240. The lens of the product 240 is precisely rotated and adjusted to focus according to the feedback of the test software in cooperation with the fiber optic sensor 230 .

[0030] like Figure 3-4 As shown, the chimeric module 310 includes a telescopic cylinder 311, a clamping member 312, and a rotating disk 314. The rotating disk 314 is rotatably mounted on the support platform 210. The clamping member 312 is axially movable and circumferentially fixedly mounted on the rotating disk 314, that is, the clamping member 312 can move axially relative to the rotating disk 314, but when the rotating disk 314 rotates, the clamping member 312 is driven to rotate synchronously. The telescopic cylinder 311 is connected to the clamping member 312 and can drive the clamping member 312 to move axially along the rotating disk 314. During operation, the telescopic cylinder 311 drives the clamping member 312 to extend, causing the clamping member 312 to clamp the lens of the product 240. In this way, when the rotating disk 314 rotates, the clamping member 312 rotates with the lens to complete the lens focusing operation.

[0031] like Figure 6As shown, the clamping member 312 is provided with a claw 313. Optionally, the clamping member 312 is provided with multiple claws 313 along the circumference, with adjacent claws 313 being equidistant. Optionally, the claw 313 engages with the lens of the product 240. The clamping member 312 is axially movably connected to the rotating disk 314 via a sliding pair. The clamping member 312 is circumferentially fixedly mounted on the rotating disk 314 via latch teeth. A spring is provided between the telescopic cylinder 311 and the clamping member 312. The telescopic cylinder 311 and a self-made high-precision sliding pair are used to achieve automatic forward and backward telescopic movement of the claw 313. The spring provided between the telescopic cylinder 311 and the clamping member 312 provides a travel buffer for the claw 313, which can accommodate incoming material errors of the product 240, thereby improving the adaptability of the chimeric module 310 and achieving high-precision focusing without affecting the positioning of the product.

[0032] like Figure 4 and Figure 5 As shown, the rotating module 320 includes a servo motor 321 and a gapless gear 322. The servo motor 321 is connected to the gapless gear 322 to drive the gapless gear 322 to rotate. The gapless gear 322 is connected to the rotating disk 314 to drive the rotating disk 314 to rotate synchronously. The servo motor 321 is connected to the gapless gear 322 via a speed reducer, which can achieve precise rotation, thereby meeting the precise focusing requirements of the lens of the product 240. The gapless gear 322 and the rotating disk 314 can mesh directly or through a gear plate to achieve synchronous and precise rotation.

[0033] like Figure 1 and Figure 2 As shown, the dispensing module 400 includes a bracket 410, a dispensing valve 420, upper and lower cylinders 430, a horizontal cylinder 440 and a UV curing module 450. The bracket 410 is fixedly mounted on the base 100, the horizontal cylinder 440 is mounted on the bracket 410, the upper and lower cylinders 430 and the UV curing module 450 are mounted on the horizontal cylinder 440, and the horizontal cylinder 440 can drive the upper and lower cylinders 430 and the UV curing module 450 to move horizontally. The dispensing valve 420 is mounted on the upper and lower cylinders 430, and the upper and lower cylinders 430 can drive the dispensing valve 420 to move up and down. The UV curing module 450 cures the glue by an LED lamp with a UV light source.

[0034] When the lens focusing of the product 240 is completed, the horizontal cylinder 440 drives the upper and lower cylinders 430 and the UV curing module 450 to move toward the product 240 until the dispensing valve 420 moves to the top of the product's dispensing point. After the upper and lower cylinders 430 drive the dispensing valve 420 to move downward to a preset position, the dispensing valve 420 applies glue at the junction of the lens and the product 240 to complete the dispensing operation. Then the horizontal cylinder 440 continues to drive the UV curing module 450 to move to the dispensing point of the product 240, and uses the LED lamp that emits UV light source to irradiate the dispensing point to cure the glue, thereby completing the dispensing and curing operations of the product. This equipment is equipped with a dispensing module 400 for automatic dispensing and curing, which has a high-precision dispensing UV curing function. The equipment space is compact and full. During dispensing, a high-precision dispensing controller and a diaphragm valve are used to accurately and evenly apply glue to the product surface. The UV light source of the LED lamp is used to achieve precise curing of the product's dispensing area without irradiating other areas of the product and causing adverse effects on the product's appearance or function.

[0035] like Figure 1 As shown, a product conduction module 500 and a lighting module 600 are also installed on the base 100. The product conduction module 500 is used to connect the product to the FPC cable, and the lighting module 600 is used to provide a light source to cooperate with the focusing operation of the product driving module 300. In this application, the meshing between the servo motor 321, the reducer and the gapless gear is used to achieve precise position rotation, that is, to achieve precise rotation of the lens, and perfect interactive focusing with the software system to ensure high stability and high precision of the equipment. The telescopic cylinder 311 and the homemade high-precision sliding pair are used to complete the automatic forward and backward telescopic movement of the clamping claw 313. The spring provided between the telescopic cylinder 311 and the clamping member 312 is used to make the clamping claw 313 have a stroke buffer, which can be compatible with the incoming material error of the product 240. The dispensing module 400 has a high-precision dispensing UV curing function, and the equipment space is compact and full. During dispensing, a high-precision dispensing controller and a diaphragm valve are used to achieve accurate and uniform dispensing of glue on the product surface, and the UV light source of the LED lamp is used to achieve precise curing of the dispensing area of the product without irradiating other areas of the product and causing adverse effects on the appearance or function of the product.

[0036] The operation method of this application includes the following steps:

[0037] Step 1: After placing the product 240 on the support platform 210 , the fixing column 211 is inserted into the fixing groove 241 to quickly position the product 240 on the support platform 210 ;

[0038] Step 2: The air cylinder 221 drives the pressing block 223 to move downward until the pressing block 223 presses the product 240 from above, thereby fixing the product 240;

[0039] Step 3: The telescopic cylinder 311 drives the clamping member 312 to extend, so that the claw 313 of the clamping member 312 engages with the lens of the product 240;

[0040] Step 4: The servo motor 321 drives the rotating disk 314 through the gapless gear 322. The rotating disk 314 drives the product lens to rotate through the claw 313. The light in the lighting module 600 is used to coordinate the high-precision rotation and focus of the lens until the software test passes the position, and the servo motor 321 stops running.

[0041] Step 5: After the lens of the product 240 is focused, the horizontal cylinder 440 drives the upper and lower cylinders 430 and the UV curing module 450 to move toward the product 240 until the dispensing valve 420 moves to just above the dispensing point of the product. After the upper and lower cylinders 430 drive the dispensing valve 420 downward to a preset position, the dispensing valve 420 applies glue to the junction of the lens and the product 240, completing the dispensing operation.

[0042] Step 6: The horizontal cylinder 440 continues to drive the UV curing module 450 to move to the glue dispensing point of the product 240, and uses the LED lamp that emits UV light source to irradiate the glue dispensing point to solidify the glue, thereby completing the glue dispensing and curing operations of the product.

[0043] It should be noted that those skilled in the art may make a number of modifications and improvements without departing from the concept of this application, and these modifications and improvements are all within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be based on the appended claims.

Claims

1. An optical lens automatic focusing device, characterized in that: The invention comprises a base (100), a product fixing module (200), a product driving module (300) and a glue dispensing module (400) installed on the base (100), wherein the product driving module (300) comprises a fitting module (310) and a rotating module (320), wherein the product fixing module (200) is used to fix the product (240), the fitting module (310) is used to clamp the lens of the product (240), the rotating module (320) is connected to the fitting module (310), and the rotating module (320) can drive the fitting module (310) to rotate to complete the focusing operation of the lens of the product (240), and the glue dispensing module (400) is used to dispense glue to the product (240) and solidify the glue at the dispensing position.

2. The optical lens automatic focusing device according to claim 1, wherein: A support plate (101) is fixedly provided on the base (100), and the product fixing module (200) and the product driving module (300) are installed on the support plate (101).

3. The optical lens automatic focusing device according to claim 2, wherein: The product fixing module (200) comprises a support platform (210), a pressing module (220) and an optical fiber sensor (230); the product (240) is placed on the support platform (210); the pressing module (220) is used to press and fix the product (240); and the optical fiber sensor (230) is used to sense the position of the product (240).

4. The optical lens automatic focusing device according to claim 3, wherein: A fixing column (211) is fixedly provided on the support platform (210), and a fixing groove (241) is provided on the product (240). The fixing column (211) can be inserted into the fixing groove (241) to quickly position the product (240). The pressing module (220) includes a driving cylinder (221), a connecting plate (222) and a pressing block (223). The first end of the connecting plate (222) is fixedly connected to the driving cylinder (221), and the second end of the connecting plate (222) is fixedly connected to the pressing block (223). The driving cylinder (221) can drive the pressing block (223) to move up and down.

5. The optical lens automatic focusing device according to claim 3, wherein: The interlocking module (310) includes a telescopic cylinder (311), a clamping member (312) and a rotating disk (314). The rotating disk (314) is rotatably mounted on the support platform (210). The clamping member (312) is axially movable and circumferentially fixedly mounted on the rotating disk (314). The telescopic cylinder (311) is connected to the clamping member (312), and the telescopic cylinder (311) can drive the clamping member (312) to move axially along the rotating disk (314).

6. The optical lens automatic focusing device according to claim 5, characterized in that: The clamping member (312) is provided with a claw (313), the clamping member (312) is axially movably connected to the rotating disk (314) through a sliding pair, the clamping member (312) is circumferentially fixedly mounted on the rotating disk (314) through a clamping tooth, and a spring is provided between the telescopic cylinder (311) and the clamping member (312).

7. The optical lens automatic focusing device according to claim 5, characterized in that: The rotating module (320) includes a servo motor (321) and a gapless gear (322). The servo motor (321) is connected to the gapless gear (322) to drive the gapless gear (322) to rotate. The gapless gear (322) is connected to the rotating disk (314) to drive the rotating disk (314) to rotate synchronously.

8. The optical lens automatic focusing device according to claim 1, wherein: The dispensing module (400) includes a bracket (410), a dispensing valve (420), upper and lower cylinders (430), a horizontal cylinder (440) and a UV curing module (450), wherein the bracket (410) is fixedly mounted on the base (100), the horizontal cylinder (440) is mounted on the bracket (410), the upper and lower cylinders (430) and the UV curing module (450) are mounted on the horizontal cylinder (440), the dispensing valve (420) is mounted on the upper and lower cylinders (430), and the upper and lower cylinders (430) can drive the dispensing valve (420) to move up and down, and the UV curing module (450) cures the glue by means of an LED lamp having a UV light source.

9. The optical lens automatic focusing device according to claim 1, wherein: A product conduction module (500) and a lighting module (600) are also mounted on the base (100). The product conduction module (500) is used to connect the product to the FPC cable, and the lighting module (600) is used to provide a light source to cooperate with the focusing operation of the product driving module (300).

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