Automatic assembly detection method for lens product

Abstract

The invention discloses an automatic assembly detection method of a lens product. The whole assembly process of the lens assembly is integrated on the side of the same conveying line, feeding of the lens, the sealing ring and the upper cover and image recognition of all the assemblies before assembly are completed respectively, it is conveniently guaranteed that the assembly state and the assembly position of all the assemblies can meet the set requirements in the assembly process, and meanwhile the assembly efficiency is improved. When the sealing ring is assembled, image recognition is carried out on the assembling state of the sealing ring, and the lens assemblies which are assembled badly are sorted, so that the situation that finished products are assembled abnormally due to the fact that the badness of the sealing ring is not found in time in the assembling process is avoided, the reject ratio of the lens assemblies is effectively reduced, and the production efficiency is improved. And the requirements of large-scale automatic production and processing are met.

Description

Technical Field

[0001] The present invention relates to the technical field of automated production and processing, and in particular to an automatic assembly and detection method for a lens product. Background Art

[0002] Many electronic products are equipped with cameras for image acquisition, so as to realize different tasks such as taking photos, recording videos, image recognition, and face recognition. In the lens structure of some cameras, it includes a lens, a sealing ring that is sequentially sleeved on the lens, and an upper cover. At the edge of the inner hole of the upper cover, in order to improve the tightness of the assembly with the lens assembly, a folding edge is generally provided, and the folding edge is pressed against the outer side of the lens by riveting, so as to fix the upper cover and the lens to prevent the lens from falling off from the upper cover. In the prior art, multiple processes are required from the assembly to the inspection of the lens, among which, it is generally necessary to carry out various assembly work separately in the form of an assembly line on multiple sets of equipment, and finally send it to inspect the assembly effect. However, this method generally inspects the final finished product, and by judging the overall thickness of the lens, it is determined whether the sleeve state of the sealing ring on the lens is qualified, and whether the overall assembly of the lens assembly meets the requirements. Therefore, it is difficult to eliminate the bad conditions existing in the assembly process in time.

[0003] Therefore, the prior art has defects and needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an automatic assembly and detection method for a lens product.

[0005] The technical solution of the present invention is as follows: Provide an automatic assembly detection method for a lens product, comprising the following steps:

[0006] Step 1: The lens feeding mechanism delivers the tray loaded with lenses;

[0007] Step 2: Take out the lens from the tray through the lens handling module and place it on the jig on the conveyor line, which then transports the jig;

[0008] Step 3: The flexible vibration plate feeds the sealing ring and assembles the sealing ring onto the lens to initially form a lens assembly. At the same time, the sealing ring detection camera performs image recognition on the lens assembly with the sealing ring assembled on the jig. After the recognition is completed, the jig is transported forward through the conveyor line.

[0009] Step 4: The conveyor line sends the jig to the side of the upper shell assembly area. According to the identification result of the assembly status of the sealing ring of the lens assembly in step 3, if the sealing ring is assembled in place, the upper cover is assembled on the lens assembly, and then the assembled lens assembly is transported through the conveyor line; if the sealing ring is assembled abnormally, the lens assembly with the abnormal sealing ring assembly is moved to the defective product temporary storage area through the material picking mechanism;

[0010] Step 5: The lens assembly with the upper cover assembled is transported to the riveting station, and the folded edge at the inner hole of the upper cover of the lens assembly is riveted by a rolling riveting and pressing mechanism, so that the folded edge of the upper cover is pressed or embedded on the lens;

[0011] Step 6: Move the lens assembly that has completed the roll riveting process to the side of the 3D camera to inspect the roll riveting pressing effect;

[0012] Step 7: The height of the lens assembly is detected by the laser sensor on the blanking module, and the image of the assembled lens assembly is recognized by the finished product camera detection module;

[0013] Step 8: Sort and discharge the products according to the test results;

[0014] Step 9: The conveyor line reflows the unloaded fixture and moves the fixture to the side of the lens feeding mechanism, waiting for the assembly of the next set of lens components.

[0015] Furthermore, the specific steps of step 2 are:

[0016] Step 2.1: The lens detection camera on the lens handling module takes a photo of the material tray at the lens feeding mechanism and then picks up the lens from the material tray;

[0017] Step 2.2: The lens transport module moves the lens to the code scanning station and scans the identification code on the lens;

[0018] Step 2.3: The lens handling module places the lens that has completed code scanning and recognition in the fixture on the conveyor line;

[0019] Step 2.4: The lens transport module moves to the initial position and waits for material collection.

[0020] Furthermore, the specific steps of step 3 are:

[0021] Step 3.1: The sealing ring is vibrated and fed through the flexible vibration plate, and at the same time, the image information of the sealing ring on the flexible vibration plate is obtained through the sealing ring feeding camera suspended above the flexible vibration plate;

[0022] Step 3.2: After identifying the position and state of the sealing ring according to the image information obtained by the sealing ring feeding camera, the sealing ring is picked up from the flexible vibration plate by the flexible clamping claw on the sealing ring picking module;

[0023] Step 3.3: The flexible gripper places the picked-up sealing ring on the sealing ring transfer station;

[0024] Step 3.4: The sealing ring is clamped from the sealing ring transfer station by the inner support clamp on the sealing ring picking module, and the sealing ring is expanded outward;

[0025] Step 3.5: Move the inner support jaws to the top of the fixture, put the sealing ring on the lens, and release the sealing ring to complete the assembly of the sealing ring and the lens;

[0026] Step 3.6: Use the sealing ring detection camera on the sealing ring picking module to inspect the assembly effect of the sealing ring.

[0027] Furthermore, the specific steps of step 4 are:

[0028] Step 4.1: The conveyor line delivers the jig to the side of the upper shell assembly area. According to the identification result of the assembly state of the sealing ring on the lens assembly in step 3, the lens assembly with a poorly assembled sealing ring is moved to the defective product temporary storage area for placement through the material taking module;

[0029] Step 4.2: For the lens assembly with qualified sealing ring, the product positioning camera on the material picking module obtains the image information of the lens module for positioning, and the lens assembly is picked up by the material picking module, and the position of the lens assembly is adjusted and placed in the secondary positioning mechanism, and the lens assembly is positioned by the secondary positioning mechanism;

[0030] Step 4.3: The material picking module takes a photo of the upper cover to locate it and picks up the upper cover, then adjusts the position of the upper cover and assembles the upper cover with the lens assembly;

[0031] Step 4.4: The material picking module moves the lens assembly with the upper cover assembled back to the fixture on the conveyor line.

[0032] Furthermore, the material taking module adopts a double-moving element transport module.

[0033] Furthermore, the specific steps of step 5 are:

[0034] Step 5.1: The conveyor line moves the jig containing the lens assembly to the rolling riveting and pressing mechanism;

[0035] Step 5.2: The lens assembly is pressed and fixed by a pressing cylinder provided on the rolling riveting pressing mechanism;

[0036] Step 5.3: Start the rolling riveting and pressing mechanism to rivet and press the inner hole folded edge of the upper cover in the lens assembly, and at the same time drive the lens assembly to rotate to roll and rivet the folded edge;

[0037] Step 5.4: Move the lens assembly that has completed the roll riveting process to the inspection transfer mechanism for transportation.

[0038] By adopting the above scheme, the present invention integrates the overall assembly process of the lens assembly on the side of the same conveyor line, completes the feeding of the lens, the sealing ring and the upper cover respectively, and performs image recognition on each component before assembly, so as to ensure that during the assembly process, the assembly state and assembly position of each component can meet the set requirements. At the same time, when assembling the sealing ring, the assembly state of the sealing ring is image recognized, and the poorly assembled lens assembly is sorted, so as to avoid the situation where the defect of the sealing ring is not discovered in time during the assembly process, resulting in assembly abnormalities in the finished product, thereby effectively reducing the defective rate of the lens assembly and meeting the needs of large-scale automated production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall process of the present invention.

[0040] Figure 2 Schematic diagram of the lens assembly process.

[0041] Figure 3 Schematic diagram of the process of sealing ring assembly and inspection.

[0042] Figure 4 Schematic diagram of the process of upper cover assembly work.

[0043] Figure 5 Schematic diagram of the process flow of the roll riveting process. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] See also Figure 1 The present invention provides an automatic assembly detection method for a lens product, comprising the following steps:

[0046] Step 1: The lens feeding mechanism delivers the tray loaded with lenses.

[0047] Step 2: Please refer to Figure 2 , the lens in the tray is taken out by the lens handling module and placed on the jig on the conveyor line, and the jig is transported by the conveyor line. The specific steps are:

[0048] Step 2.1: The lens detection camera on the lens handling module takes a photo of the material tray at the lens feeding mechanism and then picks up the lens from the material tray;

[0049] Step 2.2: The lens transport module moves the lens to the code scanning station and scans the identification code on the lens;

[0050] Step 2.3: The lens handling module places the lens that has completed code scanning and recognition in the fixture on the conveyor line;

[0051] Step 2.4: The lens transport module moves to the initial position and waits for material collection.

[0052] Step 3: Please refer to Figure 3 , the flexible vibration plate feeds the sealing ring, and assembles the sealing ring onto the lens to initially form a lens assembly. At the same time, the sealing ring detection camera performs image recognition on the lens assembly with the sealing ring assembled on the jig. After the recognition is completed, the jig is transported forward through the conveyor line. The specific steps are:

[0053] Step 3.1: The sealing ring is vibrated and fed through the flexible vibration plate, and at the same time, the image information of the sealing ring on the flexible vibration plate is obtained through the sealing ring feeding camera suspended above the flexible vibration plate;

[0054] Step 3.2: After identifying the position and state of the sealing ring according to the image information obtained by the sealing ring feeding camera, the sealing ring is picked up from the flexible vibration plate by the flexible clamping claw on the sealing ring picking module;

[0055] Step 3.3: The flexible gripper places the picked-up sealing ring on the sealing ring transfer station;

[0056] Step 3.4: The sealing ring is clamped from the sealing ring transfer station by the inner support clamp on the sealing ring picking module, and the sealing ring is expanded outward;

[0057] Step 3.5: Move the inner support jaws to the top of the fixture, put the sealing ring on the lens, and release the sealing ring to complete the assembly of the sealing ring and the lens;

[0058] Step 3.6: Use the sealing ring detection camera on the sealing ring picking module to inspect the assembly effect of the sealing ring.

[0059] Step 4: Please review Figure 4 , the conveyor line sends the jig to the side of the upper shell assembly area. According to the identification result of the assembly status of the sealing ring of the lens assembly in step 3, if the sealing ring is assembled in place, the upper cover is assembled on the lens assembly, and then the assembled lens assembly is transported through the conveyor line; if the sealing ring is assembled abnormally, the lens assembly with the sealing ring assembly abnormality is moved to the defective product temporary storage area through the material picking mechanism. The specific steps are:

[0060] Step 4.1: The conveyor line delivers the jig to the side of the upper shell assembly area. According to the identification result of the assembly state of the sealing ring on the lens assembly in step 3, the lens assembly with a poorly assembled sealing ring is moved to the defective product temporary storage area for placement through the material taking module;

[0061] Step 4.2: For the lens assembly with qualified sealing ring, the product positioning camera on the material picking module obtains the image information of the lens module for positioning, and the lens assembly is picked up by the material picking module, and the position of the lens assembly is adjusted and placed in the secondary positioning mechanism, and the lens assembly is positioned by the secondary positioning mechanism;

[0062] Step 4.3: The material picking module takes a photo of the upper cover to locate it and picks up the upper cover, then adjusts the position of the upper cover and assembles the upper cover with the lens assembly;

[0063] Step 4.4: The material picking module moves the lens assembly with the upper cover assembled back to the fixture on the conveyor line.

[0064] In some embodiments, the material picking module adopts a double-moving conveying module. Two sets of moving ends are arranged on the double-moving conveying module, so that the picking movement of the lens assembly and the assembly of the upper cover can be completed respectively through the two sets of moving ends, thereby effectively improving the efficiency of picking and moving the product.

[0065] Step 5: Please refer to Figure 5 , the lens assembly with the upper cover assembled is transported to the riveting station, and the folded edge at the inner hole of the upper cover of the lens assembly is riveted by the rolling riveting and pressing mechanism, so that the folded edge of the upper cover is pressed or embedded on the lens. The specific steps are:

[0066] Step 5.1: The conveyor line moves the jig containing the lens assembly to the rolling riveting and pressing mechanism;

[0067] Step 5.2: The lens assembly is pressed and fixed by a pressing cylinder provided on the rolling riveting pressing mechanism;

[0068] Step 5.3: Start the rolling riveting and pressing mechanism to rivet and press the inner hole folded edge of the upper cover in the lens assembly, and at the same time drive the lens assembly to rotate to roll and rivet the folded edge;

[0069] Step 5.4: Move the lens assembly that has completed the roll riveting process to the inspection transfer mechanism for transportation.

[0070] Step 6: Move the lens assembly that has completed the roll riveting process to the side of the 3D camera to inspect the roll riveting pressing effect.

[0071] Step 7: The height of the lens assembly is detected by the laser sensor on the blanking module, and the image of the assembled lens assembly is recognized by the finished product camera detection module.

[0072] Step 8: Sort and discharge the products according to the test results.

[0073] Step 9: The conveyor line reflows the unloaded fixture and moves the fixture to the side of the lens feeding mechanism, waiting for the assembly of the next set of lens components.

[0074] In a specific embodiment, before assembling the lens assembly, the lens, the upper cover and the sealing ring are prepared. When preparing the materials, the material tray loaded with the lens is stacked and placed in the lens material bin as the lens feeding mechanism, and the lens of the material tray is fed through the lens material bin. The material tray loaded with the upper cover to be installed is stacked and placed in the upper cover material bin as the upper cover feeding mechanism, and the upper cover is fed through the upper cover material bin. The sealing ring to be assembled is poured into the flexible vibration plate, and the sealing ring is vibrated and fed through the flexible vibration plate.

[0075] During assembly, the lens silo will send out the tray loaded with the lens, so that the lens handling module can pick up the lens, and place the picked up lens on the fixture of the conveyor line, and the conveyor line will transport the lens in the fixture. Before the lens handling module picks up the lens, the lens is first image-recognized. Since the lens is equipped with structures such as wiring terminals, there are requirements for the position and orientation of the lens, upper cover, etc. during assembly. The lens is photographed by the lens detection camera to determine the current orientation of the lens, and when the lens is picked up by the lens handling module, the lens is rotated and adjusted to the set orientation to meet the needs of subsequent assembly. In the process of moving the lens, it will pass through the scanning station, and the scanning gun at the scanning station will scan and identify the QR code on the lens, so as to establish the corresponding lens processing and detection process information in the system, which is convenient for tracing the corresponding lens in subsequent work.

[0076] After the lens is placed, the conveyor line will move the lens to be assembled to the sealing ring assembly area. The flexible vibration plate vibrates the sealing ring, so that the sealing ring moves to the pick-up area. The flexible clamp moves to the pick-up area, and selects the sealing ring that is placed stably and not blocked by other sealing rings according to the image information sent back by the sealing ring feeding camera, and moves the clamped sealing ring to the sealing ring transfer station for placement. The inner support clamp moves to the top of the sealing ring transfer station, clamps the sealing ring in an inner support manner, and expands the sealing ring outward, then sets the sealing ring on the lens, removes the inner support clamp, and assembles the sealing ring on the lens. The sealing ring detection camera performs image recognition on the sealing ring on the lens to determine whether the sealing ring is assembled in the set position. If there is a situation of inadequate assembly or unilateral deviation, the system determines that the sealing ring of the lens assembly is poorly assembled. If no abnormality is detected, the assembly of the upper shell continues.

[0077] When the lens assembly with a poorly assembled sealing ring moves to the side of the upper shell assembly area, the lens assembly is moved to the defective product temporary storage area for placement through the material picking module. In subsequent work, the abnormally assembled lens assembly can be manually reworked, or the sealing ring can be taken out and the lens can be placed on the material tray again for feeding.

[0078] The conveyor line sends the jig to the side of the upper shell assembly area. For the lens assembly that has passed the sealing ring assembly, the product positioning camera on the material picking module obtains the image information of the lens module for positioning, and picks up the lens assembly through the material picking module. After adjusting the position of the lens assembly, it is placed in the secondary positioning mechanism, and the lens assembly is positioned through the secondary positioning mechanism. The lens assembly is positioned and calibrated through the secondary positioning mechanism to avoid the situation where the lens assembly is shifted during the assembly of the sealing ring and affects the alignment effect when assembling with the shell. At the same time, the position of the upper cover is identified through another set of moving ends on the material picking module, and the direction of the upper cover is adjusted after picking up, and then the upper cover is put on the lens assembly to complete the assembly of the upper cover. After assembly, the lens assembly is moved to the jig on the conveyor line through the material picking module.

[0079] The lens assembly with the upper cover assembled is transported to the riveting station, and the lens assembly is placed in the center of the riveting station. At the same time, the lens assembly is pressed and fixed by the clamping cylinder set on the rolling riveting and pressing mechanism. The rolling riveting and pressing mechanism is started, and the riveting moving seat is driven by the riveting moving module to move toward the direction of the lens assembly, so that the folded edge on the upper cover of the lens assembly is pressed against the lens, or the edge of the folded edge is pressed into the groove on the side wall of the lens. At the same time, the rotating platform is started to drive the lens assembly to rotate, so that the lens assembly and the riveting position move relative to each other, and then the overall folded edge is riveted into place to ensure the stability of the connection and assembly between the upper cover and the lens. Then, the lens assembly that has completed the rolling riveting process is moved to the detection transfer mechanism for transportation, and the rolling riveting processing position on the lens assembly is detected and identified by a 3D camera to determine whether the folded edges of the upper cover are all rolled and riveted in place.

[0080] After the rolling riveting and inspection work is completed, the lens assembly is moved to the discharge area through the inspection transfer mechanism, and then the laser sensor on the unloading module at the discharge area detects the overall height of the lens assembly to determine whether the overall assembly is in place. At the same time, the finished product camera inspection module performs image recognition on the lens assembly to check whether there are any adverse conditions such as warping or deformation. After the overall inspection is completed, the lens assembly is sorted and discharged through the unloading module, and the finished lens assembly is moved to the material plate of the discharge bin for placement.

[0081] After the conveyor line moves the lens assembly to the riveting station and the lens assembly is picked up by the riveting handling module at the riveting station, the conveyor line refluxes the unloaded jig, so that the jig moves to the side of the lens feeding mechanism, waiting for the assembly of the next group of lens assemblies. In some embodiments, the conveyor line adopts a double-layer reflux structure, that is, the upper and lower layers of the conveyor line are transported in opposite directions, and lifting modules are respectively provided at both ends of the upper and lower layers. The lifting modules are used to switch the jig moved to the end between the upper conveyor line and the lower conveyor line to meet the needs of jig reflux.

[0082] In summary, the present invention integrates the overall assembly process of the lens assembly on the side of the same conveyor line, completes the feeding of the lens, the sealing ring and the upper cover respectively, and performs image recognition on each component before assembly, so as to ensure that during the assembly process, the assembly state and assembly position of each component can meet the set requirements. At the same time, when assembling the sealing ring, the assembly state of the sealing ring is image recognized, and the poorly assembled lens assembly is sorted, so as to avoid the situation where the defect of the sealing ring is not discovered in time during the assembly process, resulting in assembly abnormalities in the finished product, thereby effectively reducing the defective rate of the lens assembly and meeting the needs of large-scale automated production and processing.

[0083] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic assembly detection method for a lens product, characterized in that: The steps include: Step 1: The lens feeding mechanism delivers the tray loaded with lenses; Step 2: Take out the lens from the tray through the lens handling module and place it on the jig on the conveyor line, which then transports the jig; Step 3: The flexible vibration plate feeds the sealing ring and assembles the sealing ring onto the lens to initially form a lens assembly. At the same time, the sealing ring detection camera performs image recognition on the lens assembly with the sealing ring assembled on the jig. After the recognition is completed, the jig is transported forward through the conveyor line. Step 4: The conveyor line sends the jig to the side of the upper shell assembly area. According to the identification result of the assembly status of the sealing ring of the lens assembly in step 3, if the sealing ring is assembled in place, the upper cover is assembled on the lens assembly, and then the assembled lens assembly is transported through the conveyor line; if the sealing ring is assembled abnormally, the lens assembly with the abnormal sealing ring assembly is moved to the defective product temporary storage area through the material picking mechanism; Step 5: The lens assembly with the upper cover assembled is transported to the riveting station, and the folded edge at the inner hole of the upper cover of the lens assembly is riveted by a rolling riveting and pressing mechanism, so that the folded edge of the upper cover is pressed or embedded on the lens; Step 6: Move the lens assembly that has completed the roll riveting process to the side of the 3D camera to inspect the roll riveting pressing effect; Step 7: The height of the lens assembly is detected by the laser sensor on the blanking module, and the image of the assembled lens assembly is recognized by the finished product camera detection module; Step 8: Sort and discharge the products according to the test results; Step 9: The conveyor line reflows the unloaded fixture and moves the fixture to the side of the lens feeding mechanism, waiting for the assembly of the next set of lens components.

2. The automatic assembly detection method for lens products according to claim 1, characterized in that: The specific steps of step 2 are: Step 2.1: The lens detection camera on the lens handling module takes a photo of the material tray at the lens feeding mechanism and then picks up the lens from the material tray; Step 2.2: The lens transport module moves the lens to the code scanning station and scans the identification code on the lens; Step 2.3: The lens handling module places the lens that has completed code scanning and recognition in the fixture on the conveyor line; Step 2.4: The lens transport module moves to the initial position and waits for material collection.

3. The automatic assembly detection method for lens products according to claim 1, characterized in that: The specific steps of step 3 are: Step 3.1: The sealing ring is vibrated and fed through the flexible vibration plate, and image information of the sealing ring on the flexible vibration plate is obtained through a sealing ring feeding camera suspended above the flexible vibration plate; Step 3.2: After identifying the position and state of the sealing ring according to the image information obtained by the sealing ring feeding camera, the sealing ring is picked up from the flexible vibration plate by the flexible clamping claw on the sealing ring picking module; Step 3.3: The flexible gripper places the picked-up sealing ring on the sealing ring transfer station; Step 3.4: The sealing ring is clamped from the sealing ring transfer station by the inner support clamp on the sealing ring picking module, and the sealing ring is expanded outward; Step 3.5: Move the inner support jaws to the top of the fixture, put the sealing ring on the lens, and release the sealing ring to complete the assembly of the sealing ring and the lens; Step 3.6: Use the sealing ring detection camera on the sealing ring picking module to inspect the assembly effect of the sealing ring.

4. The automatic assembly detection method for lens products according to claim 1, characterized in that: The specific steps of step 4 are: Step 4.1: The conveyor line delivers the jig to the side of the upper shell assembly area. According to the identification result of the assembly state of the sealing ring on the lens assembly in step 3, the lens assembly with a poorly assembled sealing ring is moved to the defective product temporary storage area for placement through the material taking module; Step 4.2: For the lens assembly with qualified sealing ring, the product positioning camera on the material picking module obtains the image information of the lens module for positioning, and the lens assembly is picked up by the material picking module, and the position of the lens assembly is adjusted and placed in the secondary positioning mechanism, and the lens assembly is positioned by the secondary positioning mechanism; Step 4.3: The material picking module takes a photo of the upper cover to locate it and picks up the upper cover, then adjusts the position of the upper cover and assembles the upper cover with the lens assembly; Step 4.4: The material picking module moves the lens assembly with the upper cover assembled back to the fixture on the conveyor line.

5. The automatic assembly detection method for lens products according to claim 1 or 4, characterized in that: The material taking module adopts a double-moving conveying module.

6. The automatic assembly detection method for lens products according to claim 1, characterized in that: The specific steps of step 5 are: Step 5.1: The conveyor line moves the jig containing the lens assembly to the rolling riveting and pressing mechanism; Step 5.2: The lens assembly is pressed and fixed by a pressing cylinder provided on the rolling riveting pressing mechanism; Step 5.3: Start the rolling riveting and pressing mechanism to rivet and press the inner hole folded edge of the upper cover in the lens assembly, and at the same time drive the lens assembly to rotate to roll and rivet the folded edge; Step 5.4: Move the lens assembly that has completed the roll riveting process to the inspection transfer mechanism for transportation.

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