A cap abnormality detection device

Abstract

The utility model discloses a screw cap abnormality detection device, including membrane inlet conveying line, discharge conveying line, positioning cylinder, proximity sensor, detection mechanism, abnormal product waste frame, abnormal product grabbing mechanism and controller, and membrane inlet conveying line and discharge conveying line are side by side arrangement, membrane inlet conveying line is used for conveying the screw cap product of placing on mould, and discharge conveying line is used for conveying the screw cap product of detecting qualified, and membrane inlet conveying line is provided with detection station and grabbing station along its conveying direction, detection station sets up sensor support assembly, and detection mechanism sets up on sensor support assembly, and positioning cylinder and proximity sensor are separately arranged on the both sides of grabbing station, and abnormal product grabbing mechanism includes grabbing workstation, mobile module, take bottle cylinder and end effector, the utility model discloses a screw cap abnormality detection device can automatically identify whether the screw cap is complete, whether is skew, whether has loose and so on abnormal condition, and can eliminate abnormal product to ensure product quality.

Description

Technical Field

[0001] This utility model relates to a cap anomaly detection device. Background Technology

[0002] In the filling and production process of small-sized bottled screw-cap products (0.5ml to 5ml), due to factors such as the positioning accuracy of the cap or mold, there is a small probability of capping abnormalities occurring during the capping process. Before this invention, capping abnormalities were all observed manually by the naked eye. This method is inefficient and easily affected by human factors, leading to missed or false detections. Furthermore, with the continuous improvement of production line automation, manual inspection can no longer meet the demands of efficient and accurate production. Therefore, there is an urgent need for a device that can automatically and accurately detect capping abnormalities in small-sized bottled screw-cap products to improve production efficiency, ensure product quality, and reduce losses caused by capping abnormalities. Utility Model Content

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a capping abnormality detection device that can automatically identify abnormalities such as whether the cap is intact, whether it is crooked, or whether it is loose, and can reject abnormal products, thereby ensuring product quality and avoiding leakage and contamination, as well as interference between un-screwed products and equipment structures.

[0004] The technical solution to achieve the above objective is: a capping anomaly detection device, comprising an infeed conveyor line, an outfeed conveyor line, a positioning cylinder, a proximity sensor, a detection mechanism, an anomaly waste box, an anomaly gripping mechanism, and a controller, wherein:

[0005] The film feeding conveyor line and the material discharge conveyor line are arranged side by side; the film feeding conveyor line is used to transport the capped products placed on the mold, and the material discharge conveyor line is used to transport the capped products that have passed the inspection.

[0006] The film conveying line is equipped with a detection station and a gripping station along its conveying direction;

[0007] The detection station is equipped with a sensor support assembly, and the detection mechanism is mounted on the sensor support assembly. The detection mechanism includes a laser sensor one, a laser sensor two, a capacitive sensor, and a landslide frame. The laser sensor one is located on the side of the film conveying line, and the laser sensor two and the capacitive sensor are located above the film conveying line. The landslide frame has a through mounting hole in the middle, and the lower part of the capacitive sensor is inserted into the mounting hole. The bottom surface of the landslide frame is flush with the bottom surface of the capacitive sensor.

[0008] The positioning cylinder and proximity sensor are respectively located on both sides of the gripping station;

[0009] The defective waste box is located on one side of the discharge conveyor line;

[0010] The defective product gripping mechanism includes a gripping worktable, a moving module, a bottle-picking cylinder, and an end effector. The gripping worktable is longitudinally connected above the infeed conveyor line, the discharge conveyor line, and the defective product waste box. The moving module is mounted on the gripping worktable and has a sliding bracket that can move along it. The bottle-picking cylinder is mounted on the sliding bracket, with its output end facing downwards. The end effector is connected to the output end of the bottle-picking cylinder.

[0011] The laser sensor 1, laser sensor 2, electrostatic capacitive sensor, positioning cylinder, proximity sensor, moving module, bottle-removing cylinder, and end effector communicate with the controller respectively.

[0012] The aforementioned cap anomaly detection device, wherein the sensor support assembly includes a gantry bracket, a transition frame, a linear guide rail, and two guide rods, wherein:

[0013] The gantry support is composed of a front upright, a rear upright and a top rod. The bottom ends of the front upright and the rear upright of the gantry support are connected to the front and rear sides of the film conveying line respectively. The first laser sensor is connected to the front upright of the gantry support through a connector, and the second laser sensor is connected to the front end of the top rod of the gantry support through a connector.

[0014] The top rod of the gantry support is provided with a pendant plate in the middle, and the top of the front and rear parts of the pendant plate are respectively provided with guide rod mounting seats.

[0015] The linear guide rail is vertically arranged in the middle of the pendant plate, and the two guide rods are distributed in front of and behind the linear guide rail, with the top ends of the two guide rods correspondingly inserted into the guide rod mounting seats in the front and rear of the pendant plate.

[0016] The middle part of the transition frame is connected to the linear guide rail via a slider, and the bottom ends of the two guide rods are respectively connected to the bottom end of the transition frame; a spring is fitted on each guide rod.

[0017] The electrostatic capacitance sensor is mounted on the transition frame.

[0018] In the aforementioned capping anomaly detection device, the transition frame includes two L-shaped supports, the vertical parts of which are fixed together. One of the L-shaped supports has a vertically penetrating electrostatic capacitance sensor mounting hole on its horizontal part, and the middle part of the electrostatic capacitance sensor is disposed in the electrostatic capacitance sensor mounting hole. The vertical part of the other L-shaped support is connected to the linear guide rail via a slider, and its horizontal part is connected to the bottom end of the two guide rods.

[0019] In the aforementioned capping anomaly detection device, when the moving module drives the sliding bracket and the bottle-picking cylinder thereon to move back and forth, the bottle-picking cylinder and the end effector thereon reciprocate above the film infeed conveyor line, the material outfeed conveyor line and the defective waste box.

[0020] In the aforementioned capping anomaly detection device, the front and rear sides of the gripping workbench are respectively provided with support rods, and the gripping workbench is positioned above the film infeed conveyor line, the material discharge conveyor line, and the defective waste box via the front and rear support rods.

[0021] In the aforementioned capping anomaly detection device, a groove is provided on the outer wall of the mold, and the output shaft of the positioning cylinder is stuck in the groove when it extends, thus restricting the movement of the mold along the film feeding conveyor line.

[0022] In the aforementioned cap anomaly detection device, a metal block is provided on the mold, and the metal block is used by the proximity sensor to sense the position of the mold.

[0023] Compared with the prior art, the capping abnormality detection device of this utility model has the following advantages:

[0024] (1) Compared with high-precision photoelectric sensor detection, which is less affected by equipment vibration, the equipment installation and debugging of this utility model is less difficult and the detection results are more stable and reliable. If photoelectric sensor is used for detection, the detection accuracy will be greatly reduced after the photoelectric sensor is moved or interfered with, and the equipment recovery will be difficult. This utility model adopts the method of electrostatic capacitive sensor and mechanical linkage to avoid detection errors caused by equipment vibration or installation deviation, and improves the robustness of the overall system.

[0025] (2) Through the ingenious design of the slope frame and spring reset mechanism, the seamless connection between automatic identification and rejection of abnormal products is realized, which not only reduces manual intervention but also improves production efficiency;

[0026] (3) Compared with visual inspection solutions, there is no need for complex light source debugging and image processing algorithms, which greatly reduces equipment costs and maintenance difficulty, significantly reduces equipment maintenance costs and operation thresholds, making the system easier to promote and apply in various production environments, thereby further reducing equipment costs and operation and maintenance costs. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the cap anomaly detection device of this utility model;

[0028] Figure 2 This is a top view of the cap anomaly detection device of this utility model;

[0029] Figure 3 This is a front view of the cap anomaly detection device of this utility model;

[0030] Figure 4 This is a schematic diagram of the installation of an electrostatic capacitive sensor;

[0031] Figure 5 This is a schematic diagram of the sensor bracket assembly.

[0032] Figure 6 This is the electrical schematic diagram of the cap anomaly detection device of this utility model. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0034] Please see Figures 1 to 6 The preferred embodiment of this utility model is a capping abnormality detection device, which includes a film feeding conveyor line 1, a material discharging conveyor line 11, a positioning cylinder 6, a proximity sensor 8, a detection mechanism, an abnormal product waste frame 10, an abnormal product gripping mechanism, and a controller 20.

[0035] The film feeding conveyor line 1 and the discharge conveyor line 11 are arranged side by side; the film feeding conveyor line 1 is used to convey the capped product 30 placed on the mold 2, and the discharge conveyor line 11 is used to convey the capped product that has passed the inspection.

[0036] The film conveyor line 1 is equipped with a detection station and a gripping station along its conveying direction;

[0037] The detection station is equipped with a sensor support assembly 3, and the detection mechanism is set on the sensor support assembly 3. The detection mechanism includes a laser sensor 4, a laser sensor 5, a capacitive sensor 13, and a landslide frame 12. The laser sensor 4 is located on the side of the film conveying line 1, and the laser sensor 5 and the capacitive sensor 13 are located above the film conveying line 1. The landslide frame 12 has a through mounting hole in the middle, and the lower part of the capacitive sensor 13 is inserted into the mounting hole. The bottom end face of the landslide frame 12 is flush with the bottom end face of the capacitive sensor 13.

[0038] Specifically, the sensor support assembly 3 includes a gantry support 19, a transition frame 14, a linear guide rail 15, and two guide rods 16. The gantry support 19 is composed of a front upright, a rear upright, and a top rod connected together. The bottom ends of the front and rear uprights of the gantry support 19 are connected to the front and rear sides of the film conveying line 1 respectively. Laser sensor 1 4 is connected to the front upright of the gantry support 19 through a connector, and laser sensor 2 5 is connected to the front end of the top rod of the gantry support 19 through a connector.

[0039] A pendant plate 21 is provided in the middle of the top rod of the gantry bracket 19. Guide rod mounting seats 22 are provided at the top of the front and rear parts of the pendant plate 21, respectively. The linear guide rail 15 is vertically arranged in the middle of the pendant plate 21. Two guide rods 16 are distributed in front of and behind the linear guide rail 15, and the top of the two guide rods 16 are inserted into the guide rod mounting seats 22 in the front and rear parts of the pendant plate, respectively. The middle part of the transition frame 14 is connected to the linear guide rail 15 through a slider. The bottom ends of the two guide rods 16 are connected to the bottom end of the transition frame 14, respectively. A spring 17 is sleeved on each guide rod 16. The spring 17 is located between the guide rod mounting seat 22 and the bottom end of the transition frame 14. The electrostatic capacitance sensor 13 is arranged on the transition frame 14. Specifically, the transition frame 14 includes two L-shaped brackets, with their vertical portions fixed together. One L-shaped bracket has a through-hole for mounting a capacitive sensor on its horizontal portion, and the middle portion of the capacitive sensor 13 is positioned within this hole. The vertical portion of the other L-shaped bracket is connected to the linear guide rail 15 via a slider, and its horizontal portion is connected to the bottom ends of two guide rods 16. When a product with an abnormal cap passes through the ramp frame 12, it will lift the ramp frame 12, causing the capacitive sensor 13 and the transition frame 14 to move upwards along the linear guide rail 15. The two guide rods 16 act as guides. After the abnormal cap passes, the transition frame 14, under the action of the spring 17, will cause the capacitive sensor 13 and the ramp frame 12 to return to their original positions.

[0040] Positioning cylinder 6 and proximity sensor 18 are respectively located on both sides of the gripping station; a metal block is provided on the mold 2, which is used by proximity sensor 18 to sense the position of the mold. A groove is provided on the outer wall of the mold 2, and the output shaft of positioning cylinder 6 is stuck in the groove when it extends, restricting the movement of mold 2 along the film feeding conveyor line 1.

[0041] The defective waste box 10 is located on one side of the discharge conveyor line 11.

[0042] The defective product gripping mechanism includes a gripping worktable 71, a moving module 7, a bottle-picking cylinder 8, and an end effector 9. The gripping worktable 71 is longitudinally connected above the film inlet conveyor line 1, the material outlet conveyor line 11, and the defective product waste box 10. Specifically, support rods 72 are respectively provided on the front and rear sides of the gripping worktable 71, and the gripping worktable 71 is positioned above the film inlet conveyor line 1, the material outlet conveyor line 11, and the defective product waste box 10 through the support rods 72 on the front and rear sides.

[0043] The moving module 7 is mounted on the gripping worktable 71. A sliding support 73 is mounted on the moving module 7, along which it can move. A bottle-picking cylinder 8 is mounted on the sliding support 73, with its output end facing downwards. An end effector 9 is connected to the output end of the bottle-picking cylinder 8. When the moving module 7 drives the sliding support 73 and the bottle-picking cylinder 8 to move back and forth, the bottle-picking cylinder 8 and the end effector 9 reciprocate above the infeed conveyor line 1, the outfeed conveyor line 11, and the defective waste box 10.

[0044] Laser sensor 1 (4), laser sensor 2 (5), electrostatic capacitive sensor (13), positioning cylinder (6), proximity sensor (18), moving module (7), bottle-removing cylinder (8), and end effector (9) communicate with controller (20).

[0045] In this invention, the capping anomaly detection device, after the product 30 has been filled and capped on the mold 2, is sent to the detection station via the film conveyor line 1. Laser sensor 4 is used to detect the product's arrival. When the product arrives at the detection station, laser sensor 4 triggers a signal to controller 20. Controller 20 then activates electrostatic capacitance sensor 13 to detect whether there is liquid inside the product bottle. The bottom surface of the sliding frame 12 is flush with the bottom surface of electrostatic capacitance sensor 13. When the product arrives at the detection station, normally capped products (qualified capped products) will pass smoothly through the sliding frame 12, while abnormally capped products will lift the sliding frame 12, causing electrostatic capacitance sensor 13 and transition frame 14 to move upwards along the linear guide rail 15. At this time, laser sensor 5 will be triggered, transmitting a signal to controller 20. Controller 20 will then determine that the product is abnormal. When the abnormal product is detected... After exiting the inspection station, the slide frame 12 returns to its original position under the elastic force of the spring 17. Then, when the mold 2 is conveyed to the gripping station by the film feeding conveyor line 1, the proximity sensor 18 senses the metal block on the mold 2 and sends a positioning signal to the controller 20. The controller 20 activates the output shaft of the positioning cylinder 6 to extend and engage with the groove of the mold 2, accurately positioning the mold 2 and preventing it from moving along the film feeding conveyor line 1. The controller 20 controls the moving module 7 to move the bottle-picking cylinder 8 above the mold 2. The end effector 9 accurately grips the capped product 30 on the mold 2 and conveys it to the next process. The controller 20 controls the moving module 7, the bottle-picking cylinder 8, and the end effector 9 to work together to accurately grip and transfer abnormal products to the abnormal product waste box 10, completing the automatic rejection process. Normal products are transferred to the discharge conveyor line 11 for output and enter the subsequent packaging stage.

[0046] This invention achieves efficient identification and automatic rejection of defective capping products through the collaborative work of multiple sensors. The electrostatic capacitive sensor 13 needs to be as close as possible to the bottle being detected. Therefore, the bottom surface of the electrostatic capacitive sensor 13 is flush with the bottom surface of the slide frame 12. In actual use, the function of the laser sensor 25 is not required to trigger the rejection of defective capping products. One reason is that if the electrostatic capacitive sensor 13 detects an empty bottle, it will also send an empty bottle signal to the controller 20, which will determine that the product is defective. Another reason is that the defective capping product will lift the slide frame 12, and at the same time, the distance between the electrostatic capacitive sensor 13 and the liquid surface of the product in the bottle will increase, thereby triggering the electrostatic capacitive sensor 13 to send an abnormal signal to the controller 20, which will determine that the product is defective.

[0047] As an improvement, the controller 20 can issue an alarm or mark abnormal products in a timely manner so that production personnel can handle them promptly, thereby ensuring product quality and avoiding problems such as leakage contamination and interference between unscrewed products and equipment structures.

[0048] In summary, the capping anomaly detection device of this utility model can be used to detect capping anomalies in small-sized bottled capped products, thereby improving product quality, preventing leakage and contamination, and preventing un-screwed products from interfering with other equipment structures. Its basic solution is to use a specific detection device and laser sensor to perform capping quality detection on small-sized bottled capped products. This device can automatically identify abnormalities such as whether the cap is intact, whether it is crooked, or whether it is loose, and can reject abnormal products, thereby ensuring product quality.

[0049] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A capping anomaly detection device, characterized in that, This includes an infeed conveyor line, an outfeed conveyor line, a positioning cylinder, a proximity sensor, a detection mechanism, a defective product waste box, a defective product gripping mechanism, and a controller, among which: The film feeding conveyor line and the material discharge conveyor line are arranged side by side; the film feeding conveyor line is used to transport the capped products placed on the mold, and the material discharge conveyor line is used to transport the capped products that have passed the inspection. The film conveying line is equipped with a detection station and a gripping station along its conveying direction; The detection station is equipped with a sensor support assembly, and the detection mechanism is mounted on the sensor support assembly. The detection mechanism includes a laser sensor one, a laser sensor two, a capacitive sensor, and a landslide frame. The laser sensor one is located on the side of the film conveying line, and the laser sensor two and the capacitive sensor are located above the film conveying line. The landslide frame has a through mounting hole in the middle, and the lower part of the capacitive sensor is inserted into the mounting hole. The bottom surface of the landslide frame is flush with the bottom surface of the capacitive sensor. The positioning cylinder and proximity sensor are respectively located on both sides of the gripping station; The defective waste box is located on one side of the discharge conveyor line; The defective product gripping mechanism includes a gripping worktable, a moving module, a bottle-picking cylinder, and an end effector. The gripping worktable is longitudinally connected above the infeed conveyor line, the discharge conveyor line, and the defective product waste box. The moving module is mounted on the gripping worktable and has a sliding bracket that can move along it. The bottle-picking cylinder is mounted on the sliding bracket, with its output end facing downwards. The end effector is connected to the output end of the bottle-picking cylinder. The laser sensor 1, laser sensor 2, electrostatic capacitive sensor, positioning cylinder, proximity sensor, moving module, bottle-removing cylinder, and end effector communicate with the controller respectively.

2. The cap abnormality detection device according to claim 1, characterized by The sensor support assembly includes a gantry bracket, a transition frame, a linear guide rail, and two guide rods, wherein: The gantry support is composed of a front upright, a rear upright and a top rod. The bottom ends of the front upright and the rear upright of the gantry support are connected to the front and rear sides of the film conveying line respectively. The first laser sensor is connected to the front upright of the gantry support through a connector, and the second laser sensor is connected to the front end of the top rod of the gantry support through a connector. The top rod of the gantry support is provided with a pendant plate in the middle, and the top of the front and rear parts of the pendant plate are respectively provided with guide rod mounting seats. The linear guide rail is vertically arranged in the middle of the pendant plate, and the two guide rods are distributed in front of and behind the linear guide rail, with the top ends of the two guide rods correspondingly inserted into the guide rod mounting seats in the front and rear of the pendant plate. The middle part of the transition frame is connected to the linear guide rail via a slider, and the bottom ends of the two guide rods are respectively connected to the bottom end of the transition frame; a spring is fitted on each guide rod. The electrostatic capacitance sensor is mounted on the transition frame.

3. The capping anomaly detection device according to claim 2, characterized in that, The transition frame includes two L-shaped brackets, the vertical parts of which are fixed together. One of the L-shaped brackets has a vertically penetrating electrostatic capacitance sensor mounting hole on its horizontal part, and the middle part of the electrostatic capacitance sensor is set in the electrostatic capacitance sensor mounting hole. The vertical part of the other L-shaped bracket is connected to the linear guide rail via a slider, and its horizontal part is connected to the bottom end of the two guide rods.

4. The capping anomaly detection device according to claim 1, characterized in that, When the moving module drives the sliding bracket and the bottle-picking cylinder thereon to move back and forth, the bottle-picking cylinder and the end effector thereon reciprocate above the film infeed conveyor line, the material outfeed conveyor line and the defective waste box.

5. The cap abnormality detection device according to claim 1, characterized by The gripping workbench is equipped with support rods on its front and rear sides, and the gripping workbench is positioned above the infeed conveyor line, the discharge conveyor line, and the defective waste box via the support rods on its front and rear sides.

6. The capping anomaly detection device according to claim 1, characterized in that, A groove is provided on the outer wall of the mold, and the output shaft of the positioning cylinder is stuck in the groove when it extends, thus restricting the movement of the mold along the film feeding conveyor line.

7. The cap abnormality detection device according to claim 1, characterized by A metal block is provided on the mold, and the metal block is used by the proximity sensor to sense the position of the mold.

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