An automatic defect detection screening device and method

Abstract

The application discloses a kind of flaw automatic detection screening device and method, belong to cosmetic packaging automation production technical field.The device includes mesh belt conveyor, which is provided with the positioning guide plate assembly of guiding cosmetic inner cover;Detection assembly, with visual identification component, multi-axis moving assembly and the mounting head with vacuum chuck of tape;Peeling mechanism, for realizing gasket separation and feeding;Adsorption component, is located below conveyor belt and has gas supply lifting mechanism;Detection component, for detecting in-place state and triggering adsorption component action.The application is dynamically linked through detection component and adsorption component, under mounting head, the momentary trigger gas supply lifting mechanism of gasket is pressed into under moving, carries out local negative pressure adsorption locking to target cosmetic inner cover, effectively solves the gasket mounting deviation problem caused by mechanical vibration, inertial displacement and mounting head depression airflow due to conveyor belt frequent start-stop, improves mounting precision and product consistency.

Description

Technical Field

[0001] This invention relates to the field of automated production technology for cosmetic packaging, and in particular to an automatic defect detection and screening device and method. Background Technology

[0002] In the existing production process of daily cosmetic inner packaging materials (such as inner caps, gaskets, etc.), the detection of product surface defects and assembly defects is a key link to ensure the quality of products leaving the factory. With the development of automation technology, some production lines have begun to introduce automated inspection equipment based on machine vision. This type of equipment usually uses fixed industrial cameras with light sources to collect images of passing products at specific inspection stations on the conveyor belt. Then, image processing algorithms are used to identify the two-dimensional features of the product surface, thereby realizing the automatic judgment and preliminary screening of good and bad products.

[0003] However, in actual production, cosmetic inner caps in existing technologies are usually placed on the conveyor belt surface by their own weight. Under the conditions of high-speed operation and frequent start-stop of the production line, the cosmetic inner cap is prone to slight displacement due to inertia. This makes it difficult for the pressing and mounting station to accurately align the physical center of the inner cap. In addition, due to the groove structure of the inner cap, the mounting head will compress the air in the groove at the moment of pressing down, forming a momentary micro-airflow, which will affect the suspended gasket and further increase the risk of displacement. As a result, not only will the product appearance be less consistent, but the gasket will also be inaccurately covered, thereby increasing the possibility of inner cap sealing failure.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides an automatic defect detection and screening device and method, which solves the technical problems of easy displacement and inaccurate installation of cosmetic inner caps during high-speed production.

[0006] The present invention adopts the following technical solution: an automatic defect detection and screening device and method. It includes a mesh belt conveyor, wherein a positioning guide plate assembly for guiding the inner cap of a cosmetic product is provided between its loading and unloading ends; The inspection and placement assembly is located on one side of the mesh belt conveyor and has a vision recognition component and a multi-axis moving component. The moving end of the multi-axis moving component is provided with a placement head, and the bottom of the placement head has a vacuum suction cup for adsorbing pads. A peeling mechanism, located on the side of the inspection and mounting assembly, is used to feed the gasket roll and separate the gasket from the backing paper for the mounting head to pick up. An adsorption component, located below the conveyor belt of the mesh belt conveyor, has an air supply lifting mechanism for negative pressure adsorption and locking of the cosmetic inner cap at the corresponding position. A detection component is installed on the mesh belt conveyor and the mounting head to detect the positioning status and trigger the adsorption component to perform an action when the mounting head moves to mount.

[0007] Furthermore, the air supply lifting mechanism includes a support unit and an air supply unit. The support unit includes two mounting brackets, a fixed crossbar, and several guide rods. The distance between the two mounting brackets is fixed between the two side frames of the mesh belt conveyor. The fixed crossbar is fixed between the two mounting brackets, and the several guide rods are vertically fixed on the fixed crossbar.

[0008] Furthermore, the air supply unit includes an inner air supply pipe, a fixed outer pipe, several air inlet connectors, a horn cover, and a connecting rod. The inner air supply pipe is movably connected between the two mounting brackets. The fixed outer pipe is movably sleeved on the inner air supply pipe and is fixedly connected to the fixed crossbar through a connecting bracket. The air inlet connector is connected to the inner air supply pipe and is connected to the corresponding horn cover through a connecting hose. The connecting rod is fixed on the horn cover and movably sleeved on the guide rod. A support spring is provided between the connecting rod and the fixed crossbar.

[0009] Furthermore, the adsorption assembly also includes a switching unit, which includes a trigger rod and several trigger protrusions screwed thereon. The trigger rod is disposed between the two mounting brackets and is parallel to the air supply inner pipe. The trigger protrusions are used to hold the corresponding sleeve rod and drive the horn cover to move upward along the guide rod to contact the mesh belt part of the mesh belt conveyor. A rotary motor is provided on the mounting bracket, and the air supply inner pipe and the trigger rod are connected by a belt drive assembly.

[0010] Furthermore, the detection component includes a positioning detection unit and a triggering unit. The positioning detection unit includes a right-angle frame fixed to the side of the frame and a positioning sensor disposed on the right-angle frame. The triggering unit includes an arched frame fixed to the positioning guide plate assembly and a plurality of sensors spaced apart along the arched frame. A mounting swing arm is obliquely fixed to the side of the mounting head, and a sensor is fixed to one end of the mounting swing arm.

[0011] Furthermore, the inner air supply pipe is spirally provided with vent holes corresponding to the air inlet connector. The spiral arrangement phase of the vent holes corresponds to the spiral arrangement phase of the trigger protrusion. The sensor is electrically connected to the rotary motor. The rotary motor is used to drive the trigger rod and the inner air supply pipe to rotate synchronously to a preset angle based on the trigger signal of the sensor and a certain sensor.

[0012] Furthermore, the positioning guide plate assembly includes a first positioning guide plate and a second positioning guide plate. The two first positioning guide plates are symmetrically arranged at the feeding end of the mesh belt conveyor. The second positioning guide plate is composed of a front guiding inclined surface and a rear limiting plane. The limiting plane is used to guide several cosmetic inner caps to be arranged in a row.

[0013] Furthermore, the inspection and placement assembly also includes an inspection cabinet, the vision recognition assembly includes a display screen and a vision camera, the vision camera is disposed on the side of the placement head, and the multi-axis movement assembly includes a Y-axis movement module fixed in the inspection cabinet and an X-axis movement module disposed on the sliding end of the Y-axis movement module, with the placement head indirectly disposed on the X-axis movement module.

[0014] Furthermore, the peeling mechanism includes a mounting frame, an unwinding roller, a winding roller, a winding motor, and a peeling plate. The mounting frame is fixed to the side of the inspection cabinet. The unwinding roller and the winding roller below it are both rotatably mounted on the mounting frame. The winding motor is fixed to the side of the mounting frame and its output end is connected to the winding roller. The peeling plate is fixed to the inspection cabinet and has an acute angle at one end, which is used to separate the pad from the bottom paper when the winding roller is winding.

[0015] An automatic defect detection and screening method includes the following steps: Step 1, Material Guiding and Position Detection: The positioning guide plate assembly guides the cosmetic inner cap to move on the mesh belt conveyor, and the detection component detects the position status of the cosmetic inner cap in real time. Step 2, Stop and Pick Up: When the detection component detects that the material has arrived, the mesh belt conveyor stops running, the mounting head moves and picks up the pads separated by the peeling mechanism; Step 3, Downward Triggering and Locking: The mounting head moves downward with the pad, triggering the detection component to cause the adsorption component to perform an action, and using the air supply lifting mechanism to lock the bottom of the target cosmetic inner cap with negative pressure; Step 4, Press-in Mounting and Defect Detection: The mounting head presses the pad into the inner cap of the cosmetic product. After pressing, the visual recognition component detects the mounting result.

[0016] The technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects: An automatic defect detection and screening device and method are disclosed. This invention achieves automated and directional guidance of cosmetic inner caps during the conveying process through the cooperation of a mesh belt conveyor and a positioning guide plate assembly. This ensures that the materials can enter the mounting station in a standardized single-row queue. At the same time, the linkage between the adsorption component and the detection component achieves follow-up local locking during the mounting process. At the instantaneous moment when the mounting head performs the pressing action, the air supply lifting mechanism performs bottom negative pressure adsorption on the target cosmetic inner cap. This not only counteracts the mechanical vibration and inertial impact generated by the frequent start and stop of the mesh belt conveyor, but also effectively overcomes the disturbance of the inner cap position caused by the instantaneous micro-airflow formed by air compression at the moment the mounting head presses down. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0018] In the attached diagram: Figure 1 This is an overall schematic diagram of an automatic defect detection and screening device according to this application; Figure 2 For the present invention Figure 1 Schematic diagram of the rear structure of the automatic defect detection and screening device; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 For the present invention Figure 1 Schematic diagram of the structure of the mounting component for testing; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 6 For the present invention Figure 1 Schematic diagram of the central mesh belt conveyor structure; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C; Figure 8 For the present invention Figure 7 A partial structural diagram; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point D; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point E; Figure 11 For the present invention Figure 8 Schematic diagram of the adsorption component structure.

[0019] Figure label: 1. Vibratory feeder; 11. Linear vibratory track; 2. Mesh belt conveyor; 21. First positioning guide plate; 22. Second positioning guide plate; 221. Guide ramp; 222. Limiting plane; 23. Third positioning guide plate; 24. Fourth positioning guide plate; 3. Inspection and placement assembly; 31. Inspection cabinet; 32. Display screen; 33. Y-axis moving module; 34. X-axis moving module; 35. Placement head; 36. Vision camera; 4. Peeling mechanism; 41. Mounting frame; 42. Unwind roller; 43. Rewind roller; 44. Rewind motor; 45. 46. ​​Guide roller; 47. Support roller; 48. Stripping plate; 49. Winding roller; 50. Adsorption assembly; 51. Mounting bracket; 52. Fixed crossbar; 53. Guide rod; 54. Inner air supply pipe; 55. Outer fixed pipe; 56. Air inlet connector; 57. Connecting hose; 58. Horn cover; 59. Belt drive assembly; 510. Trigger rod; 511. Trigger protrusion; 60. Detection assembly; 61. Right angle bracket; 62. Position sensor; 63. Arched bracket; 64. Sensor; 65. Mounting swing arm; 66. Sensing element. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0021] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Example 1: Reference Figures 1-11 As shown, this embodiment provides an automatic defect detection and screening device and method, including a mesh belt conveyor 2, with a positioning guide plate assembly for guiding cosmetic inner caps between its loading and unloading ends; a detection and mounting assembly 3, located on one side of the mesh belt conveyor 2, having a vision recognition component and a multi-axis moving component, with a mounting head 35 on the moving end of the multi-axis moving component, and a vacuum suction cup for adsorbing pads at the bottom of the mounting head 35; a peeling mechanism 4, located on the side of the detection and mounting assembly 3, for conveying the pad roll and separating the pad from the backing paper for the mounting head 35 to pick up; an adsorption assembly 5, located below the conveyor belt of the mesh belt conveyor 2, having an air supply lifting mechanism for negative pressure adsorption and locking of cosmetic inner caps at corresponding positions; and a detection assembly 6, located on the mesh belt conveyor 2 and the mounting head 35, for detecting the positioning status and triggering the adsorption assembly 5 to perform actions when the mounting head 35 moves to mount.

[0023] The overall operating principle and operation of this embodiment are as follows: When the detection component 6 detects that the material is in place, the mesh belt conveyor 2 stops, the mounting head 35 picks up the pad and moves down, and at the same time triggers the air supply lifting mechanism to lock the bottom of the target cosmetic inner cover with negative pressure. After the mounting head 35 presses in the pad, it is detected by the vision recognition component. This process uses the air supply lifting mechanism to perform partial locking on the cosmetic inner cover, avoiding the impact airflow generated when the mounting head 35 presses down and pushes the inner cover, or the mechanical vibration generated when the mesh belt conveyor 2 stops suddenly, which may cause the pad to be misaligned. After pressing in, the following vision recognition component performs online quality re-inspection to ensure the mounting accuracy and product consistency.

[0024] To achieve disordered stacking and directional arrangement of the inner cover, refer to Figure 1 As shown, a vibratory plate 1 and a linear vibratory track 11 are also provided in front of the feeding end of the mesh belt conveyor 2. The linear vibratory track 11 connects the vibratory plate 1 and the mesh belt conveyor 2, and the mesh belt conveyor 2 is connected to the discharge end of the linear vibratory track 11.

[0025] The positioning guide plate assembly specifically includes a first positioning guide plate 21, a second positioning guide plate 22, a third positioning guide plate 23, and a fourth positioning guide plate 24. The two first positioning guide plates 21 are symmetrically arranged at the feeding end of the mesh belt conveyor 2 for initial guidance. The second positioning guide plate 22 is fixed to the mesh belt conveyor 2 and is used to guide the arrangement of several cosmetic inner caps before they enter the inspection station. The second positioning guide plate 22 consists of a front guiding inclined surface 221 and a rear limiting plane 222. The third positioning guide plate 23 and the fourth positioning guide plate 24 are both located at the rear end of the mesh belt conveyor 2 and are used to guide the output of the cosmetic inner caps after the mounting process is completed.

[0026] In the actual operation path: the inner cover first enters the channel between the two first positioning guide plates 21, and then is pushed inward along the guide slope 221 and finally rests against the limiting plane 222 to form a single row of benchmark alignment. After the mounting is completed, the finished product continues to move backward under the drive of the mesh belt conveyor 2, enters the output channel between the third positioning guide plate 23 and the fourth positioning guide plate 24 and is exported in an orderly manner. By utilizing the hard limiting of the physical guide plate and the power of friction transmission, the entire path constraint of the material is realized from scattered feeding to row arrangement, and then to orderly export after mounting.

[0027] To achieve precise handling and re-inspection of gaskets with multiple degrees of freedom, refer to Figures 4-5As shown, the inspection and placement assembly 3 specifically includes an inspection cabinet 31, a display screen 32, a Y-axis moving module 33, an X-axis moving module 34, a Z-axis moving module, a placement head 35, and a vision camera 36. The inspection cabinet 31 is located on one side of the mesh belt conveyor 2. The display screen 32 is mounted on the inspection cabinet 31 for information display. The Y-axis moving module 33 is fixed inside the inspection cabinet 31 by a bracket. The X-axis moving module 34 is located on the sliding end of the Y-axis moving module 33 guide rail. The Z-axis moving module is located on the sliding end of the X-axis moving module 34 guide rail. The placement head 35 is located on the sliding end of the Z-axis moving module guide rail and has a vacuum suction cup at its bottom for adsorbing pads. The vision camera 36 is located on the side of the placement head 35 as a follow-up vision acquisition device.

[0028] In the actual operation path: Under the linkage drive of the Y-axis moving module 33, X-axis moving module 34 and Z-axis moving module, the mounting head 35 first moves laterally to above the peeling mechanism 4, and then moves down to pick up the pad through the Z-axis moving module. Then it is lifted and moved laterally to above the detection and mounting station of the mesh belt conveyor 2, aligned with the already positioned target cosmetic inner cover, and finally driven down again by the Z-axis moving module to press the pad into the inner cover cavity.

[0029] The operating principle of the inspection and mounting component 3 is as follows: the three-axis moving module realizes spatial coordinate addressing and vertical pressing. When the mounting head 35 completes the pressing action and is lifted under the drive of the Z-axis moving module, the vision camera 36 arranged on the side of the head simultaneously takes pictures of the mounted inner cover. The collected surface image data is transmitted to the internal processing unit in real time. The processing unit identifies the concentricity of the gasket mounting and the surface defects through a preset algorithm, and displays the processed inspection results on the display screen 32 in real time, thereby realizing fully automated handling, mounting and quality re-inspection.

[0030] To achieve continuous supply and stripping of gaskets, refer to Figures 3-5 As shown, the peeling mechanism 4 includes a mounting frame 41, an unwinding roller 42, a winding roller 43, a winding motor 44, a guide roller 45, a support roller 46, a peeling plate 47, and a winding roller 48. The mounting frame 41 is fixed to the side of the inspection cabinet 31 of the inspection and mounting assembly 3. The unwinding roller 42 is rotatably mounted on the mounting frame 41 to carry the initial backing paper roll with the pads applied. The winding roller 43 is also rotatably mounted on the mounting frame 41 and is located below the unwinding roller 42 in space. The winding motor 44 is fixed to the side of the mounting frame 41, and its power output end is directly connected to the winding roller 43 to provide pulling power for the conveying of the entire strip.

[0031] To ensure the stability of the strip during high-speed pulling, the guide roller 45 is rotatably mounted on the inspection cabinet 31 via a bracket to maintain the tension of the unwinding roller 42 when unwinding. The support roller 46 is also rotatably mounted on the inspection cabinet 31 via a bracket to maintain the tension of the winding roller 43 when winding at the end. The peeling plate 47 is horizontally fixed on the inspection cabinet 31, and its discharge end has a sharp edge with a specific angle. The winding roller 48 is rotatably mounted on the inspection cabinet 31 via a bracket, and its position is close to the sharp edge of the peeling plate 47.

[0032] In the actual operating path: after the roll on the unwinding roller 42 is pulled out, it is first tensioned and guided by the guide roller 45, then laid flat and adhered to the upper surface of the peeling plate 47, and when it passes the acute angle at the front end of the peeling plate 47, it undergoes a sharp downward bend at a large angle, then passes backward through the winding roller 48, and finally passes through the limiting guide of the support roller 46, and is wound and fixed onto the lowest winding roller 43.

[0033] The operating principle of the peeling mechanism 4 is as follows: when the winding motor 44 drives the winding roller 43 to rotate step by step, the backing paper is pulled backward and moves forward continuously. As the backing paper bends when it passes the acute end of the peeling plate 47, the gasket attached to its surface has a certain physical stiffness and cannot bend synchronously with the backing paper. As a result, the gasket naturally de-adheses at the acute angle and physically separates from the backing paper. The separated gasket stays smoothly on the front edge of the peeling plate 47, waiting for the mounting head 35 to move down and pick it up. The waste backing paper that has completed the peeling task is continuously wound and collected by the winding roller 43.

[0034] To achieve material arrival detection and automatic triggering of placement position, refer to Figures 5-9 As shown, the detection component 6 specifically includes a right-angle frame 61, a positioning sensor 62, an arched frame 63, a sensor 64, a mounting arm 65, and a sensing element 66. The right-angle frame 61 is fixed on one side of the frame of the mesh belt conveyor 2. The positioning sensor 62 is vertically embedded in the horizontal end of the right-angle frame 61, and its detection position is aligned with the head position of the limiting plane 222. The arched frame 63 is fixed across the second positioning guide plate 22. Several sensors 64 are spaced along the arched frame 63, and their spacing is completely consistent with the arrangement spacing of the rows of inner covers. The mounting arm 65 is tilted and fixed on the side of the mounting head 35. The sensing element 66 is fixed at one end of the mounting arm 65, and the movement trajectory of the sensing element 66 with the lateral displacement of the mounting head 35 is within the effective sensing range of the corresponding sensor 64.

[0035] To address the issue of slight displacement of materials on the mesh belt conveyor 2 under pressure, leading to misalignment of the gaskets, in conjunction with the detection component 6, refer to... Figures 8-10As shown, the adsorption assembly 5 specifically includes two mounting brackets 51, a fixed crossbar 52, a guide rod 53, an inner air supply pipe 54, a fixed outer pipe 55, several air inlet connectors 56, a connecting hose 57, a horn cover 58, a connecting rod 581, a belt drive assembly 59, a trigger rod 510, and a trigger protrusion 511. The two mounting brackets 51 are fixedly spaced between the two frames of the mesh belt conveyor 2, the fixed crossbar 52 is fixed between the two mounting brackets 51, and the guide rod 53 is vertically fixed on the fixed crossbar 52, and several guide rods are arranged along the straight line direction of the fixed crossbar 52.

[0036] The two ends of the inner air supply pipe 54 are movably connected between two mounting brackets 51 via bearings. The fixed outer pipe 55 is movably sleeved on the outside of the inner air supply pipe 54 and is fixedly connected to the fixed crossbar 52 via a connecting bracket. Several air inlet connectors 56 are spaced apart and connected to the inner air supply pipe 54 and connected to the horn cover 58 via connecting hoses 57. The sleeve rod 581 is horizontally fixed on the horn cover 58 and one end is movably sleeved on the guide rod 53. A support spring (not shown in the figure) is connected between the sleeve rod 581 and the upper surface of the fixed crossbar 52. The trigger rod 510 is parallel to the inner air supply pipe 54 and is mounted between two mounting brackets 51, and several trigger protrusions 511 are spirally fixed on it. A rotary motor is fixed on the side of one mounting bracket 51. The output end of the rotary motor is connected to one end of the trigger rod 510. The inner air supply pipe 54 and the trigger rod 510 are connected by a belt drive assembly 59.

[0037] It should be noted that the inner air supply pipe 54 has several vent holes spirally opened on its wall. The phase arrangement of the vent holes corresponds to the phase arrangement of the trigger protrusions 511 on the trigger rod 510. In the initial state, all the vent holes are blocked by the fixed outer pipe 55. At the same time, the distribution spacing of the sensors 64 corresponds to the spacing of the cosmetic inner caps arranged in rows at the limiting plane 222 of the second positioning guide plate 22.

[0038] When the inner cap of the cosmetic product is detected by the positioning sensor 62, the mesh belt conveyor 2 stops operating. Then, the mounting head 35 moves to the top of the target inner cap, and the sensor 66 on its side is exactly facing the sensor 64 of the corresponding station to trigger. After receiving the trigger signal, the rotary motor drives the trigger rod 510 to rotate at a specified angle, and drives the air supply inner pipe 54 to rotate synchronously through the belt drive assembly 59. At this specific angle, only one trigger protrusion 511 on the trigger rod 510 corresponding to the current station rotates to the highest point and pushes up the corresponding sleeve rod 581, so that the horn cover 58 of the station moves vertically upward along the guide rod 53 and is close to the bottom of the mesh belt. At the same time, only one corresponding vent hole on the air supply inner tube 54 rotates to connect with the air inlet connector 56. The external negative pressure passes through the mesh belt holes to adsorb and lock the bottom of the target cosmetic inner cap. Under this rigid locking state, the mounting head 35 is driven by the Z-axis moving module to move down and press into the pad, eliminating the risk of misalignment.

[0039] It should be noted that the position sensor 62 captures signals through the rising edge pulse of the control system. When the entire row of cosmetic inner caps is installed and the mesh belt conveyor 2 is restarted, the control system logically shields the position sensor 62 until the current row of finished products moves out of the sensing area, so as to avoid secondary false triggering caused by subsequent materials.

[0040] Working Principle: After the equipment starts, bulk cosmetic inner caps are transported in an orderly, single-row manner to the mesh belt conveyor 2 via the vibrating plate 1 and the linear vibrating track 11. Driven by the friction of the conveyor belt, the cosmetic inner caps pass through the first positioning guide plate 21 for initial guidance, and then enter the area of ​​the second positioning guide plate 22. Using the guiding slope 221 at the front end of the second positioning guide plate 22, the cosmetic inner caps are smoothly pushed inward and abut against the limiting plane 222, thus forming a single row of aligned cosmetic inner caps at the mounting station. When the first cosmetic inner cap at the front of the single row triggers the positioning sensor 62, the system determines that the material is in place, and the mesh belt conveyor 2 stops operating.

[0041] While the materials are being lined up and positioned, the peeling mechanism 4 simultaneously performs preparatory actions. The winding motor 44 drives the winding roller 43 to rotate, pulling the bottom paper carrying the pad around the acute angle end of the peeling plate 47. Utilizing physical tension and bending at the acute angle, the pad and the bottom paper are automatically separated and remain at the edge of the peeling plate 47 waiting to be picked up, while the waste bottom paper is collected on the winding roller 43.

[0042] When the mounting assembly 3 starts to execute the mounting cycle, the mounting head 35 is driven by the linkage of the Y-axis moving module 33, X-axis moving module 34 and Z-axis moving module to move to the peeling plate 47. The separated pad is picked up by the vacuum suction cup and then moved above the mesh belt conveyor 2. When the mounting head 35 moves above the inner cap of the target cosmetic, the sensor 66 at one end of the swing arm 65 triggers the sensor 64 at the corresponding position on the arch frame 63.

[0043] After receiving the trigger signal, the adsorption component 5 starts the rotary motor and drives the trigger rod 510 and the air supply inner tube 54 to rotate synchronously to a specific angle through the belt drive component 59. At this time, the trigger protrusion 511 at a specific position on the trigger rod 510 abuts upward and pushes up the corresponding sleeve rod 581, causing the horn cover 58 of this station to overcome the elastic force of the support spring and move upward until it is close to the bottom of the mesh belt. At the same time, the spiral vent on the air supply inner tube 54 rotates to the position of communicating with the air inlet connector 56 of this station. The negative pressure airflow enters the horn cover 58 through the connecting hose 57 and passes through the mesh belt holes, adsorbing the inner cap of the target cosmetic between the mesh belt and the limiting plane 222, achieving rigid locking.

[0044] After the cosmetic inner cover is locked by the bottom negative pressure, the Z-axis moving module drives the mounting head 35 to move vertically downward, pressing the pad into the cavity of the cosmetic inner cover. This eliminates the pad position displacement caused by the downward airflow or mechanical vibration. After the mounting is completed, the mounting head 35 is lifted, and the side vision camera 36 simultaneously takes pictures of the mounting result. The processing unit calculates the concentricity and defects of the image and displays the results on the display screen 32 in real time.

[0045] After a single cosmetic inner cap is installed, the mounting head 35 returns to the peeling mechanism 4 to pick up the next pad and triggers the subsequent sensors 64 in sequence to complete the mounting action of the entire row of cosmetic inner caps one by one. When the entire row of cosmetic inner caps has been processed, the mesh belt conveyor 2 restarts, and the mounted finished products are guided out by the third positioning guide plate 23 and the fourth positioning guide plate 24 at the rear end. At the same time, the next batch of blank cosmetic inner caps enters the mounting area and enters the next fully automatic cycle. two:

[0046] This embodiment provides an automatic defect detection and screening method. This method is applied to a visual inspection automatic padding device as described in Embodiment 1, referring to… Figures 1-11 As shown, the method specifically includes the following steps: Step 1: Orderly material loading and queuing orientation: After the equipment is started, bulk cosmetic inner caps are fed into the vibratory feeder 1, and then conveyed to the mesh belt conveyor 2 after being arranged in an orderly single row via the linear vibratory track 11. Driven by the conveyor belt, the cosmetic inner caps pass through the first positioning guide plate 21 for initial correction and guidance, and then enter the area of ​​the second positioning guide plate 22. The guiding slope 221 at the front end of the second positioning guide plate 22 smoothly pushes the cosmetic inner caps inward, so that they finally fit tightly against the limiting plane 222, thereby forming a single row of aligned and consistent columns at the mounting station.

[0047] Step 2, Arrival Detection and Delivery Logic Determination: When the first cosmetic inner cap at the front of the single-row queue reaches the preset station and triggers the positioning sensor 62, the positioning sensor 62 captures the signal via the rising edge pulse of the control system and sends a stop command, causing the mesh belt conveyor 2 to stop operating. During this process, the control system performs logic shielding on the positioning sensor 62 to prevent subsequent cosmetic inner caps from causing secondary false triggering of the signal, ensuring the independence of the single-cycle logic.

[0048] Step 3: Simultaneous peeling and waiting for gripping of the gasket: While the inner caps of the cosmetic products are being arranged, the peeling mechanism 4 operates in a step-by-step manner. The winding motor 44 drives the winding roller 43 to rotate and pull the backing paper carrying the pad. The backing paper is guided by the guide roller 45 and then laid flat on the upper surface of the peeling plate 47. Because the backing paper is sharply bent at the acute angle end of the peeling plate 47, the pad, which has physical stiffness, automatically separates from the backing paper and stays at the edge of the peeling plate 47.

[0049] Step 4, Multi-axis linkage material handling and spatial addressing: After the mounting assembly 3 receives the stop signal, the mounting head 35 is moved to the peeling plate 47 by the linkage of the Y-axis moving module 33, X-axis moving module 34 and Z-axis moving module. The pad is picked up by the vacuum suction cup, and then the head is lifted and moved to the target mounting position above the mesh belt conveyor 2.

[0050] Step 5: Follow-up position triggers phase rotation with the mechanism: When the mounting head 35 moves above the corresponding cosmetic inner cap, the sensor 66 on the mounting arm 65 enters the effective sensing range of the corresponding sensor 64 and triggers a signal. After receiving the signal, the adsorption assembly 5 starts the rotary motor, which drives the trigger rod 510 and the air supply inner tube 54 to rotate synchronously to a specific angle via the belt drive assembly 59.

[0051] Step Six: Single-Station Lifting Drive and Local Negative Pressure Locking: At the aforementioned rotation angle, the trigger protrusion 511 on the trigger rod 510 rotates to its highest point and lifts the sleeve rod 581, driving the horn cover 58 to overcome the spring force of the support spring and move upwards to fit tightly against the bottom of the mesh belt. At the same time, the vent on the air supply inner tube 54 rotates precisely to connect with the air inlet connector 56. The external vacuum negative pressure is guided through the connecting hose 57 to the horn cover 58 and acts on the bottom of the cosmetic inner cap through the mesh belt holes, firmly adhering it between the limiting plane 222 and the mesh belt, establishing a rigid locking state.

[0052] Step 7: Vertical pressing and placement, and defect re-inspection: In a rigidly locked state, the Z-axis moving module drives the placement head 35 to move vertically downwards, pressing the pad into the cosmetic inner cap. After placement, the head is lifted, and the vision camera 36 simultaneously takes a picture and samples. The processing unit calculates concentricity and surface defects based on the acquired images and displays the detection results and defect judgment on the display screen 32 in real time.

[0053] Step 8: Batch cyclical completion and orderly output of finished products: The placement head 35 returns to the peeling mechanism 4 to pick up the next pad, and repeats the above steps to trigger the subsequent sensors 64 to complete the placement of the entire row. After a single row is completed, the mesh belt conveyor 2 restarts, and the placed finished products are guided out by the third positioning guide plate 23 and the fourth positioning guide plate 24. The logic shield of the positioning sensor 62 is released after the finished product moves out of the sensing area, and the system enters the next fully automatic cycle.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic defect detection and screening device, characterized in that, include: The mesh belt conveyor (2) has a positioning guide plate assembly for guiding the inner cover of cosmetics between its loading end and unloading end; The inspection and placement assembly (3) is located on one side of the mesh belt conveyor (2), and has a visual recognition assembly and a multi-axis moving assembly. The moving end of the multi-axis moving assembly is provided with a placement head (35), and the bottom of the placement head (35) has a vacuum suction cup for adsorbing pads. The peeling mechanism (4) is located on the side of the detection and mounting assembly (3) for conveying the gasket roll and separating the gasket from the backing paper so that the mounting head (35) can pick it up. The adsorption component (5) is located below the conveyor belt of the mesh belt conveyor (2) and has an air supply lifting mechanism for negative pressure adsorption and locking of the cosmetic inner cover at the corresponding position. The detection component (6) is installed on the mesh belt conveyor (2) and the mounting head (35) to detect the positioning status and trigger the adsorption component (5) to perform an action when the mounting head (35) moves to mount.

2. The automatic defect detection and screening device according to claim 1, characterized in that: The air supply lifting mechanism includes a support unit and an air supply unit. The support unit includes two mounting brackets (51), a fixed crossbar (52), and several guide rods (53). The two mounting brackets (51) are fixed at a distance between the two side frames of the mesh belt conveyor (2). The fixed crossbar (52) is fixed between the two mounting brackets (51). Several guide rods (53) are vertically fixed on the fixed crossbar (52).

3. The automatic defect detection and screening device according to claim 2, characterized in that: The gas supply unit includes an inner gas supply pipe (54), a fixed outer pipe (55), several air inlet connectors (56), a horn cover (58), and a connecting rod (581). The inner gas supply pipe (54) is movably connected between two mounting brackets (51). The fixed outer pipe (55) is movably sleeved on the inner gas supply pipe (54) and fixedly connected to the fixed crossbar (52) through a connecting bracket. The air inlet connector (56) is connected to the inner gas supply pipe (54) and connected to the corresponding horn cover (58) through a connecting hose (57). The connecting rod (581) is fixed on the horn cover (58) and movably sleeved on the guide rod (53). A support spring is provided between the connecting rod (581) and the fixed crossbar (52).

4. The automatic defect detection and screening device according to claim 3, characterized in that: The adsorption assembly (5) also includes a switching unit, which includes a trigger rod (510) and several trigger protrusions (511) screwed thereon. The trigger rod (510) is arranged between the two mounting brackets (51) and parallel to the air supply inner pipe (54). The trigger protrusions (511) are used to hold the corresponding sleeve rod (581) and drive the horn cover (58) to move upward along the guide rod (53) to contact the mesh belt part of the mesh belt conveyor (2). A rotary motor is provided on the mounting bracket (51). The air supply inner pipe (54) and the trigger rod (510) are connected by a belt drive assembly (59).

5. The automatic defect detection and screening device according to claim 4, characterized in that: The detection component (6) includes a positioning detection unit and a triggering unit. The positioning detection unit includes a right-angle frame (61) fixed on the side of the frame and a positioning sensor (62) set on the right-angle frame (61). The triggering unit includes an arched frame (63) fixed on the positioning guide plate assembly and a plurality of sensors (64) spaced along the arched frame (63). The mounting head (35) is inclinedly fixed with a mounting swing arm (65) on its side, and a sensor (66) is fixed at one end of the mounting swing arm (65).

6. The automatic defect detection and screening device according to claim 5, characterized in that: The air supply inner tube (54) is spirally provided with a vent hole corresponding to the air inlet connector (56). The spiral arrangement phase of the vent hole is set to correspond to the spiral arrangement phase of the trigger protrusion (511). The sensor (64) is electrically connected to the rotary motor. The rotary motor is used to drive the trigger rod (510) and the air supply inner tube (54) to rotate synchronously to a preset angle based on the trigger signal of the sensor (66) and a certain sensor (64).

7. The automatic defect detection and screening device according to claim 1, characterized in that: The positioning guide plate assembly includes a first positioning guide plate (21) and a second positioning guide plate (22). The two first positioning guide plates (21) are symmetrically arranged at the feeding end of the mesh belt conveyor (2). The second positioning guide plate (22) is composed of a front guiding inclined surface (221) and a rear limiting plane (222). The limiting plane (222) is used to guide several cosmetic inner caps to be arranged in rows.

8. The automatic defect detection and screening device according to claim 7, characterized in that: The inspection and placement assembly (3) also includes an inspection cabinet (31). The visual recognition assembly includes a display screen (32) and a visual camera (36). The visual camera (36) is disposed on the side of the placement head (35). The multi-axis moving assembly includes a Y-axis moving module (33) fixed in the inspection cabinet (31) and an X-axis moving module (34) disposed at the sliding end of the Y-axis moving module (33). The placement head (35) is indirectly disposed on the X-axis moving module (34).

9. The automatic defect detection and screening device according to claim 8, characterized in that: The peeling mechanism (4) includes a mounting frame (41), an unwinding roller (42), a winding roller (43), a winding motor (44), and a peeling plate (47). The mounting frame (41) is fixed to the side of the inspection cabinet (31). The unwinding roller (42) and the winding roller (43) below it are rotatably mounted on the mounting frame (41). The winding motor (44) is fixed to the side of the mounting frame (41) and its output end is connected to the winding roller (43). The peeling plate (47) is fixed on the inspection cabinet (31) and has an acute angle at one end, which is used to separate the pad from the bottom paper when the winding roller (43) is winding.

10. An automatic defect detection and screening method, characterized in that, The application of the automatic defect detection and screening device as described in claim 1 includes the following steps: Step 1, material guidance and positioning detection: The positioning guide plate assembly guides the cosmetic inner cover to move on the mesh belt conveyor (2), and the positioning status of the cosmetic inner cover is detected in real time by the detection component (6); Step 2, Stop and pick up materials: When the detection component (6) detects that the material is in place, the mesh belt conveyor (2) stops running, and the mounting head (35) moves and picks up the pads separated by the peeling mechanism (4); Step 3, Downward Triggering and Locking: The mounting head (35) moves downward with the pad, triggering the detection component (6) during this process to make the adsorption component (5) perform an action, using the air supply lifting mechanism to lock the bottom of the target cosmetic inner cap with negative pressure; Step 4, Press-in and Defect Detection: The mounting head (35) presses the pad into the cosmetic inner cover. After pressing, the visual recognition component detects the mounting result.

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