A pet bottle support ring gap detector

Abstract

This utility model belongs to the field of PET bottle production technology, specifically a PET bottle support ring notch detector, including a mounting platform one and a mounting platform two. The mounting platform two is sleeved on the outside of the mounting platform one, and a rotating disk is provided on the top side of the mounting platform one. This utility model uses a motion digital camera to take real-time pictures of the PET bottle support ring area. Combined with the standard image algorithm preset by the controller, the pixels of the support ring are compared and analyzed to accurately identify notches larger than 1.5*1.5mm. The rotating disk is driven by a drive component to rotate at a constant speed. With the positioning mechanism of Hall sensor and magnetic block, each PET bottle passes through the detection station at a fixed interval, ensuring that the motion digital camera captures a stable and clear image of the support ring. When the controller recognizes the defect signal, it sends a delay command to the cylinder of the unloading component. By retracting the L-shaped push plate and being pushed by the top plate, the defective product falls from the chute into the collection cylinder.

Description

Technical Field

[0001] This utility model relates to the field of PET bottle production technology, specifically to a PET bottle support ring notch detector. Background Technology

[0002] PET preforms are semi-finished plastic products made through injection molding, primarily used for subsequent blow molding into various types of plastic bottles. Made of polyethylene terephthalate (PET), they possess high transparency, chemical resistance, lightweight yet high strength, and are widely used in beverage (e.g., mineral water, carbonated drinks), food (e.g., edible oil, tea drinks), daily chemical (e.g., cosmetics, toiletries), and medical packaging. With the advancement of environmental regulations, reusable PET bottles are gradually becoming an industry trend, combining convenient transportation with the advantages of recycling, making them one of the most recycled categories of plastic packaging materials.

[0003] In the PET bottle manufacturing industry, support ring notch defects directly affect the structural strength and safety of the bottle. However, existing technologies lack online detection equipment for this defect, mainly relying on manual online light inspection. On the one hand, the detection efficiency is limited by human visual fatigue and is difficult to match the pace of high-speed production lines. On the other hand, the faster the production speed, the higher the rate of missed detection of support ring notches by humans, resulting in defective products not being removed in time. This increases quality control costs and may also lead to product safety risks. To address this, we propose a PET bottle support ring notch detector. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a PET bottle support ring notch detector. By taking real-time photos of the PET bottle support ring area with a motion digital camera and combining the results with a standard image algorithm preset by the controller, the pixels of the support ring are compared and analyzed. This allows for the accurate identification of notches larger than 1.5*1.5mm, thus solving the background problem.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PET bottle support ring notch detector, comprising a mounting platform one and a mounting platform two, wherein the mounting platform two is sleeved on the outside of the mounting platform one, a rotating disk is provided on the top side of the mounting platform one, and a driving assembly for driving the rotating disk to rotate is installed on the bottom side of the mounting platform one. The edge of the rotating disk has several limiting grooves arranged in a circular array, and the top of the rotating disk has several material ejection assemblies arranged in a circular array. The rear left and right sides of the mounting platform two respectively have a material inlet and a material outlet. A detection component and a material unloading component are also installed on the top left side of the second mounting platform. The detection component includes an L-shaped mounting plate, which is fixedly installed on the top left side of the second mounting platform. A controller is installed on the top side of the L-shaped mounting plate, and a motion digital camera is installed on the top and bottom sides of the L-shaped mounting plate. A PET bottle is placed below the motion digital camera, and the top of the PET bottle is placed inside the limiting groove. A support ring is also fixedly fitted on the top outer surface of the PET bottle. The bottom left and right sides of the support ring abut against the top side of the second mounting platform and the top side of the rotating disk, respectively.

[0006] Preferably, the drive assembly includes a drive motor, which is fixedly mounted on the bottom side of the mounting platform. A fixed column is fixedly connected to the center of the bottom side of the rotating disk, and the fixed column is rotatably mounted on the mounting platform. A worm gear is fixedly sleeved on the bottom outer surface of the fixed column. Two sets of fixed plates are also fixedly connected to the bottom side of the mounting platform, and a worm is rotatably mounted between the two sets of fixed plates. The output shaft end of the drive motor is fixedly connected to one end of the worm, and the worm meshes with the worm wheel.

[0007] Preferably, the top material assembly includes a mounting frame, which is fixedly connected to the top side of the rotating disk. A sliding rod is provided between the side of the mounting frame near the support ring and the side away from the support ring. A limiting plate is fixedly sleeved on the sliding rod, and a spring is also sleeved on the sliding rod. The two sides of the spring abut against the side of the limiting plate away from the support ring and the inner wall of the mounting frame, respectively. A top plate is fixedly connected to the end of the sliding rod near the support ring, and the side of the top plate near the support ring abuts against the outer surface of the support ring.

[0008] Preferably, the material removal assembly includes a cylinder, which is fixedly installed on the top left side of the mounting platform two. An L-shaped push plate is fixedly connected to the output shaft end of the cylinder. A sliding groove is also provided on the top left side of the mounting platform two, and the L-shaped push plate is disposed inside the sliding groove.

[0009] Preferably, a collecting cylinder is provided directly below the L-shaped pusher plate, and an oblique discharge port is provided on the front side of the collecting cylinder.

[0010] Preferably, a Hall sensor is installed on the bottom left side of the mounting platform, and several magnet blocks are fixedly connected in a circular array at the bottom of the rotating disk.

[0011] Preferably, an LED light is installed on the right side of the L-shaped mounting plate.

[0012] Preferably, a buzzer alarm is installed on the left side of the L-shaped mounting plate.

[0013] Preferably, both mounting platform one and mounting platform two have several bolt mounting holes through their bottoms.

[0014] This invention provides a PET bottle support ring notch detector. Compared with the prior art, it has the following advantages: 1. This PET bottle support ring notch detector uses a motion digital camera to take real-time pictures of the PET bottle support ring area. Combined with the standard image algorithm preset by the controller, the pixels of the support ring are compared and analyzed to accurately identify notches larger than 1.5*1.5mm. The drive component drives the rotating disk to rotate at a constant speed. With the positioning mechanism of Hall sensor and magnetic block, each PET bottle passes through the detection station at a fixed interval, ensuring that the motion digital camera captures a stable and clear image of the support ring.

[0015] 2. In this PET bottle support ring defect detector, the top plate of the top material assembly is kept in contact with the outer surface of the support ring by the spring force to counteract the shaking during the transmission of the PET bottle and ensure the stability of the support ring position during detection. When the controller recognizes the defect signal, it sends a delay command to the cylinder of the unloading assembly, and the defective product is dropped from the chute into the collection cylinder by retracting the L-shaped push plate and being pushed by the top plate. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the main body of this utility model; Figure 2 This is a schematic diagram of the bottom view of the main body structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the collection cylinder of this utility model; Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure at point B; Figure 6 This utility model Figure 2 Enlarged schematic diagram of the structure at point C.

[0017] In the diagram: 1. Rotary disc; 2. Limiting groove; 3. Discharge port; 4. Cylinder; 5. Slide groove; 6. L-shaped push plate; 7. Collection cylinder; 8. Mounting platform one; 9. Mounting platform two; 10. PET bottle; 11. Slanted discharge port; 12. L-shaped mounting plate; 13. Controller; 14. Feed port; 15. Action digital camera; 16. LED lighting; 17. Buzzer alarm; 18. Support ring; 19. Mounting frame; 20. Sliding rod; 21. Limiting plate; 22. Spring; 23. Top plate; 24. Drive motor; 25. Fixing plate; 26. Worm gear; 27. Worm wheel; 28. Fixing column; 29. ​​Hall sensor; 30. Magnet block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 This utility model provides a technical solution: a PET bottle support ring notch detector, including a mounting platform 8 and a mounting platform 9. The mounting platform 9 is sleeved on the outside of the mounting platform 8. A rotating disk 1 is provided on the top side of the mounting platform 8. A driving component for driving the rotating disk 1 to rotate is installed on the bottom side of the mounting platform 8. Several limiting grooves 2 are opened in a ring array on the edge of the rotating disk 1. Several material ejection components are installed in a ring array on the top of the rotating disk 1. A material inlet 14 and a material outlet 3 are respectively opened through the left and right sides of the rear part of the mounting platform 9. A detection component and a material removal component are also installed on the top left side of the mounting platform 9. When the PET bottle support ring notch detector is working, the PET bottle 10 enters from the feed port 14 on the left rear of the mounting platform 2 9 and is placed in the limiting groove 2 of the annular array on the edge of the rotating disk 1. The top material assembly of the annular array on the top of the rotating disk 1 provides support for the top support ring 18 of the PET bottle 10. The drive assembly on the bottom side of the mounting platform 1 8 is activated, driving the rotating disk 1 to rotate and causing the PET bottle 10 to pass under the detection assembly on the left top of the mounting platform 2 9 for notch detection. After the detection is completed, the qualified PET bottle 10 rotates with the rotating disk 1 to the discharge port 3 on the right rear of the mounting platform 2 9 and is discharged. If a defect is detected, the material removal assembly on the left top of the mounting platform 2 9 is activated to remove the defective PET bottle 10, thus automating the detection process.

[0020] The detection assembly includes an L-shaped mounting plate 12, which is fixedly installed on the top left side of the mounting platform 2 9. A controller 13 is installed on the top side of the L-shaped mounting plate 12. A motion digital camera 15 is installed on the top and bottom sides of the L-shaped mounting plate 12. A PET bottle 10 is placed below the motion digital camera 15, and the top of the PET bottle 10 is placed inside the limiting groove 2. A support ring 18 is also fixedly sleeved on the top outer surface of the PET bottle 10. The bottom left and right sides of the support ring 18 abut against the top side of the mounting platform 2 9 and the top side of the rotating disk 1, respectively.

[0021] When the detection component is working, the L-shaped mounting plate 12 is fixed to the top left side of the mounting platform 2 9. The controller 13 on its top side controls the motion digital camera 15 on the bottom side of the top to take pictures of the top support ring 18 of the PET bottle 10 below. The top of the PET bottle 10 is positioned by the limiting groove 2, and the bottom of the support ring 18 abuts against the top side of the mounting platform 2 9 and the top side of the rotating disk 1. The image captured by the motion digital camera 15 is transmitted to the controller 13, and the support ring 18 is detected to have a gap by comparing it with the standard image.

[0022] The drive assembly includes a drive motor 24, which is fixedly mounted on the bottom side of the mounting platform 8. A fixed post 28 is fixedly connected to the center of the bottom side of the rotating disk 1, and the fixed post 28 is rotatably mounted on the mounting platform 8. A worm gear 27 is fixedly sleeved on the bottom outer surface of the fixed post 28. Two sets of fixed plates 25 are also fixedly connected to the bottom side of the mounting platform 8. A worm gear 26 is rotatably mounted between the two sets of fixed plates 25. The output shaft end of the drive motor 24 is fixedly connected to one end of the worm gear 26, and the worm gear 26 meshes with the worm wheel 27.

[0023] When the drive assembly is working, the drive motor 24 is fixed to the bottom side of the mounting platform 8, and its output shaft drives the worm gear 26 to rotate. The worm gear 26 meshes with the worm wheel 27 at the bottom of the fixed column 28, thereby driving the fixed column 28 and the rotating disk 1 to rotate, realizing the circular conveying of PET bottles 10 on the rotating disk 1.

[0024] The top material assembly includes a mounting frame 19, which is fixedly connected to the top side of the rotating disk 1. A sliding rod 20 is provided between the side of the mounting frame 19 near the support ring 18 and the side away from the support ring 18. A limiting plate 21 is fixedly sleeved on the sliding rod 20, and a spring 22 is also sleeved on the sliding rod 20. The two sides of the spring 22 abut against the side of the limiting plate 21 away from the support ring 18 and the inner wall of the mounting frame 19, respectively. A top plate 23 is fixedly connected to the end of the sliding rod 20 near the support ring 18, and the side of the top plate 23 near the support ring 18 abuts against the outer surface of the support ring 18.

[0025] When the top material assembly is working, the mounting frame 19 is fixed to the top side of the rotating disk 1, the sliding rod 20 passes through the mounting frame 19, the limiting plate 21 and the spring 22 are sleeved on the sliding rod 20, and the elastic force of the spring 22 keeps the top plate 23 abutting against the outer surface of the support ring 18, thus keeping the top of the PET bottle 10 stable during the rotation of the rotating disk 1.

[0026] The material removal assembly includes a cylinder 4, which is fixedly installed on the top left side of the mounting platform 2 9. An L-shaped push plate 6 is fixedly connected to the output shaft end of the cylinder 4. A slide groove 5 is also provided on the top left side of the mounting platform 2 9, and the L-shaped push plate 6 is located inside the slide groove 5.

[0027] A collection cylinder 7 is located directly below the L-shaped pusher plate 6, and an inclined discharge port 11 is provided on the front side of the collection cylinder 7.

[0028] When the controller 13 detects the defect signal, it sends a delay command to the cylinder 4. The output shaft of the cylinder 4 retracts, causing the L-shaped push plate 6 to move backward in the slide 5. At this time, the top plate 23 is pushed against the outer surface of the support ring 18 by the elastic force of the spring 22. During the retraction and retraction of the L-shaped push plate 6, it falls into the collection cylinder 7 below through the slide 5, completing the removal of defective products. The inclined discharge port 11 on the front side of the collection cylinder 7 is used to discharge waste products.

[0029] A Hall sensor 29 is installed on the bottom left side of the mounting platform 8. Several magnet blocks 30 are fixedly connected in a ring array at the bottom of the rotating disk 1. The Hall sensor 29 on the bottom left side of the mounting platform 8 detects the magnet blocks 30 in the ring array at the bottom of the rotating disk 1 in real time. By changing the magnetic field, the rotation position and angle of the rotating disk 1 are determined to ensure that the PET bottle 10 is accurately aligned with the detection component and the material removal component station.

[0030] An LED light 16 is installed on the right side of the L-shaped mounting plate 12. The LED light 16 on the right side of the L-shaped mounting plate 12 projects uniform light onto the detection area, providing sufficient lighting conditions for the motion digital camera 15 to capture images of the support ring 18.

[0031] A buzzer alarm 17 is installed on the left side of the L-shaped mounting plate 12. When the controller 13 detects that there are gaps or defects in multiple sets of support rings 18, it triggers the buzzer alarm 17 on the left side of the L-shaped mounting plate 12 to sound an alarm, reminding the operator to pay attention to the equipment operating status or handle the abnormality.

[0032] Both mounting platform 8 and mounting platform 9 have several bolt mounting holes through their bottoms for inserting bolts to fix the equipment in the designated position on the production line.

[0033] Working principle: When the PET bottle support ring notch detector is working, the PET bottle 10 enters from the feed port 14 on the left side of the rear of the mounting platform 2 9 and is placed in the limiting groove 2 of the annular array on the edge of the rotating disk 1. Several mounting frames 19 are fixed in the annular array on the top of the rotating disk 1. Since the sliding rod 20 passes through the mounting frame 19, the limiting plate 21 and the spring 22 are sleeved on the sliding rod 20. Therefore, the elastic force of the spring 22 makes the top plate 23 always abut against the outer surface of the support ring 18, keeping the top of the PET bottle 10 stable during the rotation of the rotating disk 1. The output shaft of the drive motor 24 drives the worm gear 26 to rotate. The worm gear 26 meshes with the worm wheel 27 at the bottom of the fixed column 28, thereby driving the fixed column 28 and the rotating disk 1 to rotate, realizing the circular conveying of the PET bottle 10 on the rotating disk 1. The PET bottle 10 is carried past the L-shaped mounting plate 12 on the top left of the mounting platform 2 9. The controller 13 on the top side controls the motion digital camera 15 on the bottom side of the top to take pictures of the top support ring 18 of the PET bottle 10 below. The top of the PET bottle 10 is positioned by the limiting groove 2. The bottom of the support ring 18 abuts against the top side of the mounting platform 2 9 and the top side of the rotating disk 1. The image captured by the motion digital camera 15 is transmitted to the controller 13, and the support ring 18 is checked for gaps by comparing it with the standard image. After the inspection is completed, the qualified PET bottle 10 is rotated by the rotating disk 1 to the discharge port 3 on the right side of the rear of the mounting platform 2 9 and discharged. When the controller 13 recognizes the defect signal, it sends a delay command to the cylinder 4. The output shaft of the cylinder 4 retracts and drives the L-shaped push plate 6 to move backward in the slide 5. At this time, the top plate 23 is pushed against the outer surface of the support ring 18 by the elastic force of the spring 22. During the retraction and retraction of the L-shaped push plate 6, it falls into the collection cylinder 7 below through the slide 5, completing the rejection of defective products. The inclined discharge port 11 on the front side of the collection cylinder 7 is used to discharge waste products, realizing the automation of the inspection process.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PET bottle support ring gap detector comprising a mounting station one (8) and a mounting station two (9), characterized in that: The second mounting platform (9) is sleeved on the outside of the first mounting platform (8). The top side of the first mounting platform (8) is provided with a rotating disk (1). The bottom side of the first mounting platform (8) is provided with a driving component for driving the rotating disk (1) to rotate. The edge of the rotating disk (1) is provided with several limiting grooves (2) in a ring array. The top of the rotating disk (1) is provided with several material ejection components in a ring array. The rear left and right sides of the second mounting platform (9) are respectively provided with a feed inlet (14) and a discharge outlet (3). The top left side of the second mounting platform (9) is also provided with a detection component and a material removal component. The detection component includes an L-shaped mounting plate (12), which is fixedly installed on the top left side of the mounting platform (9). A controller (13) is installed on the top side of the L-shaped mounting plate (12). A motion digital camera (15) is installed on the top bottom side of the L-shaped mounting plate (12). A PET bottle (10) is placed below the motion digital camera (15). The top of the PET bottle (10) is placed inside the limiting groove (2). A support ring (18) is also fixedly sleeved on the top outer surface of the PET bottle (10). The bottom left and right sides of the support ring (18) abut against the top side of the mounting platform (9) and the top side of the rotating disk (1), respectively.

2. A PET bottle support ring gap detector according to claim 1, wherein: The drive assembly includes a drive motor (24), which is fixedly mounted on the bottom side of the mounting platform (8). A fixed column (28) is fixedly connected to the middle of the bottom side of the rotating disk (1), and the fixed column (28) is rotatably mounted on the mounting platform (8). A worm gear (27) is fixedly sleeved on the bottom outer surface of the fixed column (28). Two sets of fixed plates (25) are also fixedly connected to the bottom side of the mounting platform (8). A worm (26) is rotatably mounted between the two sets of fixed plates (25). The output shaft end of the drive motor (24) is fixedly connected to one end of the worm (26), and the worm (26) meshes with the worm gear (27).

3. A PET bottle support ring gap detector according to claim 1, wherein: The top material assembly includes a mounting frame (19), which is fixedly connected to the top side of the rotating disk (1). A sliding rod (20) is provided between the side of the mounting frame (19) near the support ring (18) and the side away from the support ring (18). A limiting plate (21) is fixedly sleeved on the sliding rod (20), and a spring (22) is also sleeved on the sliding rod (20). The two sides of the spring (22) abut against the side of the limiting plate (21) away from the support ring (18) and the inner wall of the mounting frame (19), respectively. A top plate (23) is fixedly connected to one end of the sliding rod (20) near the support ring (18), and the side of the top plate (23) near the support ring (18) abuts against the outer surface of the support ring (18).

4. A PET bottle support ring gap detector according to claim 1, wherein: The material removal assembly includes a cylinder (4), which is fixedly installed on the top left side of the mounting platform two (9). An L-shaped push plate (6) is fixedly connected to the output shaft end of the cylinder (4). A sliding groove (5) is also provided on the top left side of the mounting platform two (9). The L-shaped push plate (6) is located inside the sliding groove (5).

5. A PET bottle support ring gap detector according to claim 4, wherein: A collection cylinder (7) is provided directly below the L-shaped pusher plate (6), and an oblique discharge port (11) is provided on the front side of the collection cylinder (7).

6. A PET bottle support ring gap detector according to claim 2, wherein: A Hall sensor (29) is installed on the bottom left side of the mounting platform (8), and several magnet blocks (30) are fixedly connected in a ring array at the bottom of the rotating disk (1).

7. A PET bottle support ring gap detector according to claim 1, wherein: An LED light (16) is installed on the right side of the L-shaped mounting plate (12).

8. A PET bottle support ring gap detector according to claim 1, wherein: A buzzer alarm (17) is installed on the left side of the L-shaped mounting plate (12).

9. A PET bottle support ring gap detector according to claim 1, wherein: Both mounting platform one (8) and mounting platform two (9) have several bolt mounting holes through their bottoms.

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