Drop test method and device for plastic packaging products with continuous release

Abstract

The present invention provides a drop test method and device for plastic packaging products that can be released continuously, and relates to the technical field of test devices for the production of plastic packaging products. The test method includes step 1: transporting a number of samples arranged at intervals to a drop release position in sequence by means of a conveyor belt; step 2: at the drop release position, releasing a number of samples that arrive in sequence in sequence, so that a number of samples fall to a plane in sequence; step 3: visually inspecting a number of samples that fall to the plane in sequence, completing an initial inspection of the sample appearance and recording the initial inspection results, and collecting qualified samples and unqualified samples separately according to the initial inspection results; wherein, before releasing the sample in step 2, the sample's drop angle is first adjusted. The present invention solves the problem that existing drop methods and devices cannot achieve efficient and continuous release of large quantities of samples, and the drop angle is single.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices for the production of plastic packaging products, in particular to a drop test method and device for plastic packaging products capable of continuous release. Background Art

[0002] Plastics have become a common outer packaging material in the pharmaceutical industry due to their chemical resistance, excellent sealing and barrier properties, adjustable mechanical properties, and ease of aseptic production. Especially for liquids such as injectables, oral solutions, and topical medications, plastic outer packaging offers lightweight and impact resistance, effectively ensuring the safety of the medications. Pharmaceutical manufacturing specifications require that after encapsulation and packaging, drop tests be conducted to determine the product's drop resistance. This performance is crucial for product safety and stability during transportation, storage, and use. To eliminate incidental testing and ensure sufficient testing of samples with varying materials, specifications, and medication solutions, sufficient sample volumes are often required during testing. This requires efficient and continuous drop testing of large batches of samples to improve efficiency.

[0003] However, the traditional drop test implementation method relies on manual operation, that is, the pre-treated sample needs to be held by a person to a certain height, and then released from a specific angle to allow the sample to fall freely onto a hard, rigid and smooth surface. After the drop, the sample appearance needs to be manually inspected and recorded. The inspection indicators include whether the outer packaging is broken, deformed, and whether the seal is cracked or loose. This method has the disadvantages of low efficiency and high labor costs, and can no longer meet the needs of mass production and testing of modern products. In recent years, although some automated drop test devices have gradually emerged, which can effectively free up manpower, these test devices also have the limitation of being unable to efficiently and continuously release large quantities of samples in actual applications. Specifically:

[0004] Existing drop test devices typically employ a method in which a clamping mechanism (e.g., a manipulator) lifts a sample to a specified height before releasing it. For example, Patent Publication No. CN213397571U discloses a drop test device for plastic products. In this method, each time a sample is dropped, the clamping mechanism first grasps the sample at a retrieval position, then lifts it to a specified height for release, and returns it to the retrieval position after release. This process is complex and time-consuming, as the clamping mechanism must repeatedly rise and fall in a specific sequence. Therefore, individual samples can only be released sequentially through the cyclical motion of the clamping mechanism, failing to efficiently and continuously release multiple samples. This, in turn, impacts test efficiency and prolongs the test cycle. Furthermore, many existing test devices employ a single drop angle for the sample, thus failing to achieve a comprehensive test result. For example, in the aforementioned patent, the sample is lifted and released by hoisting using a hook and a sling in the clamping mechanism, without the ability to change the release angle.

[0005] In summary, the present invention provides a drop test method and device for plastic packaging products with continuous release. Summary of the Invention

[0006] The purpose of the present invention is to provide a drop test method and device for plastic packaging products with continuous release, so as to solve the problems mentioned in the above background technology that the existing drop methods and devices cannot achieve efficient and continuous release of large quantities of samples and the drop angle is single.

[0007] The present invention is achieved by adopting the following technical solutions:

[0008] A drop test method for a continuously-released plastic packaging product comprises the following steps:

[0009] Step 1: Use a conveyor belt to transport several spaced samples to the drop release position in sequence;

[0010] Step 2: At the drop release position, release the samples that arrive in sequence, so that the samples fall onto the plane in sequence;

[0011] Step 3: Perform visual inspections on several samples that have fallen onto the flat surface in sequence, complete the initial inspection of the sample appearance and record the initial inspection results, and collect qualified samples and unqualified samples separately based on the initial inspection results;

[0012] Before releasing the sample in step 2, the falling angle of the sample is adjusted first.

[0013] A continuously releaseable drop test device for plastic packaging products is used to implement the above-mentioned continuously releaseable drop test method for plastic packaging products, comprising a control part, a loading part, a drop release part and a drop material receiving part, wherein the loading part, the drop release part and the drop material receiving part are respectively communicated with the control part; the control part is used to coordinately control the operation of the loading part, the drop release part and the drop material receiving part, the loading part is used to transport several samples to the drop release part in sequence by means of a conveyor belt, the drop release part is used to adjust the drop angle of the samples and release several samples in sequence, and the drop material receiving part is used to receive samples and perform initial inspection and classified collection on several samples.

[0014] Furthermore, the loading part includes a loading conveyor belt, and a number of baffles are evenly arranged at intervals on the surface of the loading conveyor belt; the loading conveyor belt includes an inclined loading section and a horizontal loading section connected to each other, and the height of the inclined loading section is lower than the height of the horizontal loading section.

[0015] Furthermore, the drop release part is arranged on one side of the end of the horizontal loading section, and the drop release part includes a feeding mechanism and a release mechanism; the feeding mechanism includes a channel plate, and the channel plate and the baffle are arranged to be offset structures corresponding to each other, and a trigger switch is provided above the channel plate; the release mechanism includes a release platform, and the release platform is an openable and closable structure and an angle adjustment module is provided on the release platform; one side of the channel plate is the end of the horizontal loading section and the other side is the release platform, and the channel plate is rotatably located on one side of the release platform with an inclined structure from high to low.

[0016] Furthermore, the release platform includes two symmetrical outer movable platforms and two symmetrical inner movable platforms, the two inner movable platforms are adjacent and located between the two outer movable platforms, and the two outer movable platforms move closer or farther away under the drive of the corresponding opening and closing power mechanisms; the angle adjustment module includes two flip seats, the two flip seats are respectively fixedly connected to the bottom of the two outer movable platforms, and the two inner movable platforms are respectively rotatably connected to the two flip seats.

[0017] Furthermore, a centering component is provided above each of the two outer movable platforms. The centering component includes a centering power mechanism and a push plate. The push plate is connected to the output end of the centering power mechanism.

[0018] Furthermore, the angle adjustment module also includes a steering assembly, which is arranged above the two inner movable platforms. The steering assembly includes a steering rotary power mechanism, a steering lifting power mechanism and a steering claw. The output ends of the steering rotary power mechanism and the steering lifting power mechanism are connected to the steering claw.

[0019] Furthermore, the two outer movable platforms are each provided with an anti-drop plate on one side away from the channel plate, and the two inner movable platforms are each provided with a protective support plate on one side away from the channel plate, and the lower ends of the two protective support plates are respectively fixedly connected to the corresponding inner movable platforms.

[0020] Furthermore, the falling material receiving part includes a material receiving mechanism and a visual detection mechanism, the material receiving mechanism is arranged below the release mechanism, and the visual detection mechanism is arranged on one side of the material receiving mechanism; the material receiving mechanism includes a material receiving platform and a material receiving assembly, and the visual detection mechanism includes an industrial camera, and the industrial camera is configured to shoot samples on the surface of the material receiving platform.

[0021] Furthermore, the material receiving component includes a material blanking plate and a material receiving box, the material blanking plate is arranged on the material receiving platform, and the material receiving box is arranged beside the material receiving platform; the material blanking plate includes a qualified product material blanking plate and an unqualified product material blanking plate, and the material receiving box includes a qualified product material receiving box and an unqualified product material receiving box; the qualified product material blanking plate and the unqualified product material blanking plate are distributed in an "L" shape on the material receiving platform without contact, and the qualified product material blanking plate and the unqualified product material blanking plate are configured to push qualified samples and unqualified samples into the qualified product material receiving box and the unqualified product material receiving box respectively under the drive of the corresponding material blanking power mechanism.

[0022] The beneficial effects achieved by the present invention are:

[0023] Provided is a drop test method and device for plastic packaging products that can be continuously released. By setting a control part, a loading part, a drop release part, and a drop material receiving part, and setting steps 1 to 3 executed based on the structural part, a plurality of samples can be continuously loaded in a conveyor belt manner, and after the samples reach the drop release position, they are dropped and released at a specific angle. In addition, the samples can be automatically inspected and classified and collected after they are dropped. Compared with traditional test methods that rely on manual operation, the present invention realizes automation, which can effectively free up manpower and improve work efficiency. Compared with existing drop test devices, the present invention can meet the need to continuously drop large quantities of samples during the test process, and can achieve multi-angle drops, thereby improving test efficiency, shortening the test cycle, and enhancing the comprehensiveness and accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 2 is a schematic diagram of the overall structure of the drop test device according to an embodiment of the present invention;

[0025] Figure 2 1 is a schematic front view of the overall structure of the drop test device according to an embodiment of the present invention;

[0026] Figure 31 is a schematic top view of the overall structure of the drop test device according to an embodiment of the present invention;

[0027] Figure 4 1 is a schematic diagram of the overall structure of the drop release part of the drop test device according to an embodiment of the present invention;

[0028] Figure 5 2 is a schematic structural diagram of the material transfer mechanism and release platform of the drop release part of the drop test device according to an embodiment of the present invention;

[0029] Figure 6 2. It is a schematic diagram of the three-dimensional structure of the inner movable platform of the drop release part of the drop test device according to an embodiment of the present invention;

[0030] Figure 7 1 is a schematic side structural diagram of the inner movable platform of the drop release part of the drop test device according to an embodiment of the present invention;

[0031] Figure 8 2 is a schematic diagram of the structure of the flip seat of the drop release part of the drop test device according to an embodiment of the present invention;

[0032] Figure 9 1 is a schematic structural diagram of a steering assembly of a drop release portion of a drop test device according to an embodiment of the present invention;

[0033] Figure 10 1 is a schematic diagram of the overall structure of the drop material receiving part of the drop test device according to an embodiment of the present invention (including the protective cover);

[0034] Figure 11 1 is a schematic diagram of the overall structure of the drop material receiving part of the drop test device according to an embodiment of the present invention (excluding the protective cover);

[0035] Figure 12 Schematic diagram of a sample arriving at a release platform from a channel plate in a drop test method according to an embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of turning the sample in the drop test method described in the embodiment of the present invention. Figure I (The bottle mouth faces outwards);

[0037] Figure 14 This is a schematic diagram of turning the sample in the drop test method described in the embodiment of the present invention. Figure II (bottom of bottle facing outwards);

[0038] Figure 15 Schematic diagram of a horizontal drop release of a sample in the drop test method described in an embodiment of the present invention (bottom of the bottle facing outward);

[0039] Figure 162 is a schematic diagram of adjusting the tilt drop angle of a sample in the drop test method according to an embodiment of the present invention (dropping with the bottle mouth facing downward);

[0040] Figure 17 1. It is a schematic diagram of releasing a sample at an inclined drop angle (dropping with the bottle mouth facing downward) in the drop test method according to an embodiment of the present invention;

[0041] Figure 18 is a schematic diagram of adjusting the vertical drop angle of a sample in the drop test method described in an embodiment of the present invention (dropping with the bottle mouth facing downward);

[0042] Figure 19 1 is a schematic diagram of a sample subjected to a vertical drop angle release in the drop test method described in an embodiment of the present invention (dropped with the bottle mouth facing downward);

[0043] Figure 20 2. It is a schematic diagram of the working principle of the steering roller and the tension spring assembly when adjusting the drop height in the drop test method according to an embodiment of the present invention;

[0044] In the figure: 1. Inclined feeding section; 2. Sample; 3. Baffle; 4. Limiting rib; 5. Horizontal feeding section; 6. Column; 7. Industrial camera; 8. Protective cover; 9. Qualified product receiving box; 10. Unqualified product receiving box; 11. Opening and closing baffle; 12. Lifting power module; 13. Tensioning roller; 14. Support guide plate; 15. Guide chute; 16. Fixed base; 17. Frame table; 18. Tensioning spring; 19. Steering roller; 20. Support roller; 21. Driving roller; 22. Limiting mounting plate; 23. Rotating power mechanism; 24. Centering power mechanism; 2 5. Opening and closing power mechanism; 26. Inner movable table; 27. Anti-drop plate; 28. Rotation drive motor; 29. ​​Protective supporting plate; 30. Outer movable table; 31. Push plate; 32. Photoelectric beam switch; 33. Channel plate; 34. Movable limit clamp; 35. Support groove; 36. Clamp groove; 37. Turning seat; 38. Positioning hole; 39. Positioning pin; 40. Turning drive motor; 41. Adapter plate; 42. Rotary rod; 43. Mounting frame; 44. Claw rod; 45. Claw plate; 46. Qualified product blanking plate; 47. Unqualified product blanking plate; 48. Material receiving platform. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0046] Example 1

[0047] The first aspect of this embodiment provides a continuously releaseable drop test device for plastic packaging products, comprising a control portion, a loading portion, a drop release portion, and a drop receiving portion. The loading portion, the drop release portion, and the drop receiving portion are respectively connected to the control portion (depending on the actual situation, the control mechanism is located at a suitable location at the production site); the control portion is used to coordinate the operation of the loading portion, the drop release portion, and the drop receiving portion. The loading portion is used to sequentially convey a number of bottled samples 2 (in other embodiments, they can be of other shapes depending on the actual situation) to the drop release portion by means of a conveyor belt. The drop release portion is used to adjust the drop angle of the sample 2 and release a number of samples 2 in sequence. The drop receiving portion is used to receive the sample 2 and perform preliminary inspection and classified collection on the sample 2. Among them:

[0048] Please refer to Figures 1 to 3 The loading section includes a loading conveyor belt, a storage box (not shown in the figure), and an automatic loading component (not shown in the figure). The loading conveyor belt includes an inclined loading section 1 and a horizontal loading section 5 connected to each other. In this embodiment, the loading section also includes a lifting drive mechanism, which includes a lifting power module 12 and a follower translation module. The follower translation module includes a steering roller 19 and a tensioning spring assembly. The tensioning spring assembly includes a support guide plate 14, a guide chute 15, a tensioning spring 18, and a fixed base 16. Specifically:

[0049] In this embodiment, the feeding conveyor adopts a belt conveyor structure. The two rollers at both ends of the feeding conveyor are respectively located at a low height position and a high height position. The two ends of the tensioning roller 13 at the low height position are respectively connected to the two support guide plates 14, and the two ends of the driving roller 21 at the high height position are respectively connected to the output end of the lifting power module 12. The lifting power module 12 adopts a screw lifting module; a steering roller 19 is provided on the side of the driving roller 21 close to the tensioning roller 13. The steering roller 19 is at the same height as the driving roller 21 and the two ends of the steering roller 19 are also respectively connected to the lifting power module 12. At the output end of the module 12, two support rollers 20 are provided between the driving roller 21 and the steering roller 19, and the two ends of the two support rollers 20 are also connected to the output end of the lifting power module 12; the belt is wrapped around the tensioning roller 13, the steering roller 19, the two support rollers 20 and the driving roller 21, thereby forming a connected inclined feeding section 1 and a horizontal feeding section 5, and the height of the inclined feeding section 1 is lower than the height of the horizontal feeding section 5; the storage box and the automatic feeding component are arranged on the head end of the inclined feeding section 1 (that is, on one side of the tensioning roller 13), and the automatic feeding component can adopt a robot or other feasible structure in the existing technology.

[0050] The two aforementioned support guide plates 14 are slidably connected to two guide slots 15 (the guide slots 15 are equipped with a self-locking structure known in the art, which prevents the support guide plates 14 from sliding after automatic locking and allows them to slide after automatic unlocking. The self-locking structure is compatible with the start and stop of the lifting power module 12). Each support guide plate 14 is fixedly connected to one end of a tensioning spring 18, the other ends of which are respectively connected to a fixed base 16. The two fixed bases 16 are respectively fixedly connected to the frame table 17. A number of baffles 3 are evenly spaced and arranged on the surface of the aforementioned feeding conveyor belt. Each baffle 3 is provided with a limiting ridge 4 on its front side along the conveying direction.

[0051] Please refer to Figures 4 to 9 The drop release section is located at the end of the horizontal loading section 5 (i.e., on one side of the drive roller 21). It is integrally connected to the output end of the lifting power module 12 and includes a feed mechanism and a release mechanism. The feed mechanism includes a channel plate 33, and the release mechanism includes a release platform. The release platform is an openable and closable structure and is equipped with an angle adjustment module. Specifically:

[0052] In this embodiment, one side of the channel plate 33 is the end of the horizontal feeding section 5 and the other side is the release platform. Limit mounting plates 22 are respectively provided on the outer sides of both ends of the channel plate 33 and the release platform, and photoelectric corresponding switches 32 (as trigger switches) are provided on the two limit mounting plates 22 at the position above the channel plate 33; the channel plate 33 is located on one side of the release platform in an inclined structure from high to low, and the channel plate 33 and the baffle 3 are arranged to have corresponding tooth-shaped staggered structures, wherein the channel plate 33 includes a mounting rod and a plurality of teeth, and the plurality of teeth are evenly arranged on the mounting rod, one end of the mounting rod is connected to the output end of the rotating power mechanism 23, and the rotating power mechanism 23 is installed on the outer side of one of the limit mounting plates 22, and the rotating power mechanism 23 adopts a motor.

[0053] The release platform includes two symmetrical outer movable platforms 30 and two symmetrical inner movable platforms 26. The two inner movable platforms 26 are adjacent to each other and are located between the two outer movable platforms 30. The two outer movable platforms 30 are respectively connected to the output end of an opening and closing power mechanism 25. The two opening and closing power mechanisms 25 are respectively located on the outside of the two limit mounting plates 22. The opening and closing power mechanism 25 adopts a telescopic cylinder; the two outer movable platforms 30 are each provided with an anti-drop plate 27 on one side away from the channel plate 33, and the two anti-drop plates 27 are respectively connected to the two limit mounting plates 22; a centering component is respectively provided above the two outer movable platforms 30, and the centering component includes a centering power mechanism 24 and a push plate 31. The push plate 31 is connected to the output end of the centering power mechanism 24. The two centering power mechanisms 24 are also respectively located on the outside of the two limit mounting plates 22, and the centering power mechanism 24 adopts a telescopic cylinder.

[0054] The angle adjustment module includes a steering assembly and two flip seats 37, wherein the two flip seats 37 are respectively fixedly connected to the bottom of the two outer movable platforms 30, and the two inner movable platforms 26 are respectively rotatably connected to the two flip seats 37; a flip drive motor 40 is fixedly mounted on one of the flip seats 37, and the output end of the flip drive motor 40 extends into the interior of the inner movable platform 26 connected to the flip seat 37, and two positioning pins 39 are provided on the side adjacent to the other inner movable platform 26, and two positioning holes 38 corresponding to the positioning pins 39 are provided on the adjacent side of the other inner movable platform 26. In this embodiment, a protective supporting plate 29 is provided on each side of the two inner movable platforms 26 away from the channel plate 33, and the lower ends of the two protective supporting plates 29 are respectively integrated with the outer edges of the corresponding inner movable platforms 26; a supporting groove 35 is provided on the upper surface of the two inner movable platforms 26, and the supporting groove 35 in this embodiment is strip-shaped and its cross-section is fan-shaped (in other embodiments, it can be adaptably set to other shapes to match the shape of the sample 2). The two supporting grooves 35 are adjacent and symmetrical, and the two supporting grooves 35 form a lower limit groove with an arc, which is located at the center of the two inner movable platforms 26; the bottom of the outer side surfaces of the two protective supporting plates 29 are each provided with a miniature rotary drive motor Machine 28, the output ends of the two rotary drive motors 28 are respectively connected to a movable limiting clamp 34, and the two movable limiting clamps 34 are symmetrically located on the two inner movable platforms 26. The movable limiting clamps 34 include a limiting rod and two arc-shaped bars connected to the two ends of the limiting rod. One end of the movable limiting clamp 34 is rotatably connected to one end of the inner movable platform 26 close to the channel plate 33, and the other end is rotatably connected to the inner side of the protective support plate 29 of the inner movable platform 26. The arc-shaped bars on the two movable limiting clamps 34 are cocentrically designed, and a clamp groove 36 is respectively provided on the two inner movable platforms 26. The two clamp grooves 36 are respectively located on the side of the two supporting grooves 35 close to the outer movable platform 30, and the clamp grooves 36 are adapted to the movable limiting clamps 34.

[0055] The steering assembly includes a mounting frame 43, the two ends of the mounting frame 43 are respectively connected to the two limit mounting plates 22, and the mounting frame 43 is provided with a steering rotating power mechanism 23 and a steering lifting power mechanism, the output ends of the steering rotating power mechanism 23 and the steering lifting power mechanism are connected to the steering claw, and the steering claw is located above the two inner movable platforms 26; wherein, the steering rotating power mechanism 23 adopts a combination of a motor, a driving gear, a driven gear and a belt, and the steering lifting power mechanism adopts a cylinder, the piston rod of the cylinder is connected to the upper end of the rotating rod 42 through the adapter plate 41, the rotating rod 42 can rotatably pass through the driven gear, and the lower end of the rotating rod 42 is connected to the steering claw; in this embodiment, the steering claw includes a square claw plate 45, and a claw rod 44 is respectively connected to the four corners of the lower surface of the claw plate 45, and the lower ends of the four claw rods 44 are all designed to extend outward (so that it can adapt to the changes in the position of sample 2 and has a certain fault tolerance rate).

[0056] Please refer to Figures 10 and 11 The falling material receiving part includes a material receiving mechanism and a visual inspection mechanism. The material receiving mechanism is arranged below the release mechanism, and the visual inspection mechanism is arranged on one side of the material receiving mechanism. The material receiving mechanism includes a material receiving platform 48 and a material receiving assembly. The visual inspection mechanism includes an industrial camera 7, which is configured to shoot the sample 2 on the surface of the material receiving platform 48. Specifically:

[0057] In this embodiment, the material receiving platform 48 is a quadrilateral hard and smooth surface platform, and the material receiving platform 48 is covered with a protective cover 8 made of transparent material, and the protective cover 8 has only four side surfaces but no upper surface and lower surface; the material receiving assembly includes a blanking plate and a material receiving box, wherein the blanking plate includes a qualified product blanking plate 46 and a non-qualified product blanking plate 47, and the qualified product blanking plate 46 and the non-qualified product blanking plate 47 are respectively located at two edge positions on the material receiving platform 48, and the qualified product blanking plate 46 and the non-qualified product blanking plate 47 are distributed in an "L" shape on the material receiving platform 48 and do not contact each other; the qualified product blanking plate 46 and the non-qualified product blanking plate 47 are located on the inner side of the protective cover 8, and the protective cover 8 is provided. Two unloading power mechanisms are provided on the outside of the cover 8. The qualified product unloading plate 46 and the unqualified product unloading plate 47 are respectively connected to the output ends of the two unloading power mechanisms through openings opened in the protective cover 8. The unloading power mechanisms use telescopic cylinders. An opening and closing baffle 11 is provided at the bottom position of the two surfaces of the protective cover 8 opposite to the qualified product unloading plate 46 and the unqualified product unloading plate 47. The upper edge of the opening and closing baffle 11 is hinged on the surface of the protective cover 8. The length of the opening and closing baffle 11 is close to the length of the side of the protective cover 8 and the height is greater than the height of the sample 2. A qualified product receiving box 9 and an unqualified product receiving box 10 are respectively provided on one side of the material receiving platform 48 outside the two opening and closing baffles 11. In the visual inspection mechanism, the industrial camera 7 is installed on the liftable column 6 with adjustable angle (the angle adjustment structure and lifting structure adopt existing structures). A photoelectric trigger switch is provided on the column 6 above the industrial camera 7. The photoelectric trigger switch detects in the direction of the release mechanism.

[0058] A second aspect of this embodiment provides a drop test method for a continuously release plastic packaging product, using the above-mentioned drop test apparatus, including the following steps:

[0059] Step 1: Use a conveyor belt to transport several spaced samples 2 to the drop release position in sequence. Specifically:

[0060] Under the control of the control part, the automatic loading component located on one side of the inclined loading section 1 will automatically take out samples 2 from the storage box and continuously place the samples 2 on the front side of the baffle 3 currently receiving the material along the conveying direction; the placed samples 2 will follow the operation of the loading conveyor belt, from the inclined loading section 1 to the horizontal loading section 5 at the specified height, and be conveyed by the horizontal loading section 5 to the drop release part.

[0061] If the drop height needs to be changed, the lifting power module 12 can be started to make the horizontal feeding section 5 and the drop release part of the feeding conveyor belt perform corresponding vertical lifting; at the same time, please refer to Figure 20As the horizontal feeding section 5 rises and falls, the inclined feeding section 1 will perform corresponding horizontal translation under the action of the steering roller 19 and the tensioning spring 18 assembly, so as to maintain the dynamic balance of the overall structure (at this time, the position of the storage box or the action parameters of the automatic feeding component can be adjusted synchronously to ensure normal feeding).

[0062] Step 2: At the drop release position, release the samples 2 that arrive in sequence, so that the samples 2 fall to the plane in sequence; before releasing the samples 2, adjust the drop angle of the samples 2. Specifically:

[0063] When the sample 2 moves to the end of the horizontal loading section 5, it will fall from the loading conveyor belt onto the channel plate 33, and will reach the release platform as the channel plate 33 tilts and rotates. When the sample 2 falls onto the channel plate 33, the photoelectric switch 32 above the channel plate 33 will detect a signal. Therefore, under the triggering of the signal, the rotary power mechanism 23 will drive the channel plate 33 to rotate toward the release platform (with the mounting rod of the channel plate 33 as the rotation axis; it will automatically reset after rotation), so that the sample 2 reaches the release platform. Please refer to Figure 12 ; Then the centering power mechanism 24 will drive the two push plates 31 on the release platform to make relative movements at the same time at a specified time (set in the control part, a specific time after the photoelectric shooting switch 32 detects a signal, which is the time when the push plate 31 should move; the various power mechanisms in the subsequent drop release part, the industrial camera 7 in the drop receiving part and the unloading power mechanism are all started with reference to this principle and will not be repeated) to center the sample 2 that has arrived on the release platform; then the steering lifting power mechanism will drive the steering claw to descend, so that the four claw rods 44 of the steering claw are distributed around the sample 2, and then the steering rotating power mechanism 23 will drive the steering claw to rotate, so that the four claw rods 44 push the sample 2 to rotate 90° counterclockwise or clockwise, thereby making the sample 2 become a state with the bottle mouth facing outward (outward means toward the protective support plate 29) or the bottle bottom facing outward and fall into the support groove 35, please refer to Figure 13 and Figure 14 After the above adjustments,

[0064] If the sample 2 needs to be released by dropping horizontally, the opening and closing power mechanism 25 will drive the two outer movable platforms 30 to move apart at the same time. Since the two inner movable platforms 26 are connected to the two outer movable platforms 30 through the flip seats 37 respectively, the two inner movable platforms 26 will move apart with the two outer movable platforms 30, and then the sample 2 can be released. Please refer to Figure 15 After releasing the sample 2, the opening and closing power mechanism 25 drives the two outer movable platforms 30 and the two inner movable platforms 26 to reset.

[0065] If the sample 2 needs to be released at an inclined / vertical drop angle, the sample 2 needs to be adjusted at an inclined / vertical drop angle first. Specifically, the flip drive motor 40 is activated to drive the two inner movable tables 26 to flip to a specific inclined / vertical angle at the same time. Please refer to Figure 16 / Figure 18 Before the flipping begins, the two rotary drive motors 28 will simultaneously drive the two movable limit jaws 34 to move closer to limit the sample 2 and prevent the sample 2 from falling during the flipping process; after the angle adjustment is completed, the two rotary drive motors 28 drive the two movable limit jaws 34 to return to the jaw grooves 36, and the opening and closing power mechanism 25 drives the two outer movable platforms 30 to move away from the two inner movable platforms 26, so that the sample 2 can be released at an inclined / vertical falling angle. Please refer to Figure 17 / Figure 19 After releasing the sample 2, the opening and closing power mechanism 25 first drives the two outer movable platforms 30 to carry the two inner movable platforms 26 to make similar movements (so that the positioning pins 39 are inserted into the positioning holes 38), and then the flip driving motor 40 drives the two inner movable platforms 26 to return to a horizontal state.

[0066] Step 3: Perform visual inspections on several samples 2 that have fallen onto the flat surface in sequence, complete the initial inspection of the appearance of the samples 2 and record the initial inspection results, and collect qualified samples 2 and unqualified samples 2 separately based on the initial inspection results. Specifically:

[0067] After sample 2 is released, the photoelectric trigger switch will detect a signal, and then the control part will control the industrial camera 7 to shoot towards the upper surface of the receiving platform 48 at a specified time to obtain the status image of sample 2 and perform identification analysis to determine whether the packaging of sample 2 has obvious cracks, deformations, etc., and then complete the initial inspection of sample 2 and preliminarily divide sample 2 into qualified sample 2 and unqualified sample 2; according to the classification result, the corresponding unloading power mechanism will drive the qualified product unloading plate 46 or the unqualified product unloading plate 47 to move, so as to push the sample 2 to open the opening and closing baffle 11 and then fall into the qualified product receiving box 9 or the unqualified product receiving box 10. Based on this, the drop test device can complete the preliminary sorting of qualified samples 2 and unqualified samples 2 when collecting samples 2, thereby saving the workload of subsequent detailed sorting and other processes, thereby effectively improving work efficiency.

[0068] To sum up, the continuously releaseable plastic packaging product drop test method and device provided in this embodiment have many advantages compared with the existing technology. Specifically: First, it can continuously load a number of samples 2 by conveyor belt transmission, and drop and release the samples 2 after they reach the drop release position, which can meet the need to continuously drop a large number of samples 2 during the test process, thereby improving the test efficiency and shortening the test cycle; second, the drop angle and drop height of the sample 2 can be adjusted as needed, thereby achieving a more comprehensive test effect; third, the sample 2 can be automatically inspected and classified and collected after it is dropped, which helps to save subsequent workload and improve the efficiency of the overall manufacturing production line.

[0069] It should be noted that the parts that are not described in detail or expanded in the above scheme, such as the specific control principle of the control part, the specific structural settings and principles of each power mechanism, etc., are all prior art, and do not belong to the improvements made by the present invention on the prior art, nor do they belong to the scope of protection of the technical solution of the present invention, so they will not be described in detail in this article. Of course, the above content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples. Equal changes and improvements made by ordinary technicians in this technical field within the essential scope of the present invention should all fall within the scope of the patent coverage of the present invention.

Claims

1. A drop test method for continuously release plastic packaging products, characterized in that: The steps include: Step 1: Using a conveyor belt, a plurality of spaced samples (2) are sequentially transported to a drop release position; Step 2: at the drop release position, releasing the plurality of samples (2) that have arrived in sequence, so that the plurality of samples (2) fall to the plane in sequence; Step 3: Perform visual inspection on the samples (2) that have fallen onto the plane in sequence, complete the initial inspection of the appearance of the samples (2) and record the initial inspection results, and collect qualified samples (2) and unqualified samples (2) separately according to the initial inspection results; Before releasing the sample (2) in step 2, the falling angle of the sample (2) is adjusted; A drop test device for implementing the drop test method described above comprises a control part, a feeding part, a drop release part and a drop receiving part, wherein the feeding part, the drop release part and the drop receiving part are respectively connected to the control part for communication; the control part is used to coordinately control the operation of the feeding part, the drop release part and the drop receiving part; the feeding part is used to sequentially transport a plurality of samples (2) to the drop release part in a conveyor belt manner; the drop release part is used to adjust the drop angle of the sample (2) and release the plurality of samples (2) in sequence; and the drop receiving part is used to receive the sample (2) and perform preliminary inspection and classified collection on the plurality of samples (2); The loading part comprises a loading conveyor belt, and a plurality of baffles (3) arranged evenly at intervals are provided on the surface of the loading conveyor belt; The drop release part includes a material transmission mechanism and a release mechanism; the material transmission mechanism includes a channel plate (33), the channel plate (33) and the baffle (3) are arranged in a mutually corresponding staggered structure, and a trigger switch is provided above the channel plate (33); the channel plate (33) includes a mounting rod and a plurality of teeth, the plurality of teeth are evenly arranged on the mounting rod, and one end of the mounting rod is connected to the output end of the rotary power mechanism (23); The release mechanism comprises a release platform, which is an openable and closable structure and is provided with an angle adjustment module; the release platform comprises two symmetrical outer movable platforms (30) and two symmetrical inner movable platforms (26), the two inner movable platforms (26) are adjacent and located between the two outer movable platforms (30), and the two outer movable platforms (30) move closer to or away from each other under the drive of the corresponding opening and closing power mechanism (25); the angle adjustment module comprises two flip seats (37), the two flip seats (37) are respectively fixedly connected to the bottoms of the two outer movable platforms (30), and the two inner movable platforms (26) are respectively rotatably connected to the two flip seats (37).

2. The drop test method for continuously release plastic packaging products according to claim 1, characterized in that: The feeding conveyor belt comprises an inclined feeding section (1) and a horizontal feeding section (5) connected to each other, and the height of the inclined feeding section (1) is lower than the height of the horizontal feeding section (5).

3. The drop test method for continuously release plastic packaging products according to claim 2, characterized in that: The drop release portion is arranged on one side of the end of the horizontal loading section (5), one side of the channel plate (33) is the end of the horizontal loading section (5), and the other side is the release platform, and the channel plate (33) is rotatably located on one side of the release platform in an inclined structure from high to low.

4. The drop test method for continuously release plastic packaging products according to claim 3, characterized in that: A centering assembly is provided above each of the two outer movable platforms (30). The centering assembly comprises a centering power mechanism (24) and a push plate (31). The push plate (31) is connected to the output end of the centering power mechanism (24).

5. The drop test method for continuously release plastic packaging products according to claim 3, characterized in that: The angle adjustment module further comprises a steering assembly, which is arranged above the two inner movable platforms (26). The steering assembly comprises a steering rotary power mechanism (23), a steering lifting power mechanism and a steering claw, and the output ends of the steering rotary power mechanism (23) and the steering lifting power mechanism are connected to the steering claw.

6. The drop test method for continuously release plastic packaging products according to claim 3, characterized in that: An anti-drop plate (27) is provided on each side of the two outer movable platforms (30) away from the channel plate (33), and a protective supporting plate (29) is provided on each side of the two inner movable platforms (26) away from the channel plate (33). The lower ends of the two protective supporting plates (29) are respectively fixedly connected to the corresponding inner movable platforms (26).

7. The drop test method for continuously release plastic packaging products according to claim 3, characterized in that: The falling material receiving part includes a material receiving mechanism and a visual detection mechanism, wherein the material receiving mechanism is arranged below the release mechanism, and the visual detection mechanism is arranged on one side of the material receiving mechanism; the material receiving mechanism includes a material receiving platform (48) and a material receiving assembly, and the visual detection mechanism includes an industrial camera (7), and the industrial camera (7) is configured to shoot a sample (2) on the surface of the material receiving platform (48).

8. The drop test method for continuously release plastic packaging products according to claim 7, characterized in that: The material receiving assembly includes a blanking plate and a material receiving box, wherein the blanking plate is arranged on the material receiving platform (48), and the material receiving box is arranged beside the material receiving platform (48); the blanking plate includes a qualified product blanking plate (46) and a non-qualified product blanking plate (47), and the material receiving box includes a qualified product receiving box (9) and a non-qualified product receiving box (10); the qualified product blanking plate (46) and the non-qualified product blanking plate (47) are distributed in an "L" shape on the material receiving platform (48) without contact, and the qualified product blanking plate (46) and the non-qualified product blanking plate (47) are configured to push qualified samples (2) and non-qualified samples (2) into the qualified product receiving box (9) and the non-qualified product receiving box (10) respectively under the drive of the corresponding blanking power mechanism.

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