Plastic packaging product drop test method and device capable of realizing continuous release

Abstract

The invention provides a drop test method and device for a plastic packaging product capable of being continuously released, and relates to the technical field of test devices for plastic packaging product production. The test method comprises the following steps: step 1, sequentially conveying a plurality of samples which are arranged at intervals to a drop release position in a manner of conveying by a conveyor belt; step 2, at the falling release position, releasing the plurality of samples which arrive in sequence in sequence, and enabling the plurality of samples to fall to a plane in sequence; 3, visual inspection is conducted on the multiple samples falling to the plane in sequence, initial inspection of the appearances of the samples and recording of initial inspection results are completed, and qualified samples and unqualified samples are collected according to the initial inspection results; wherein the falling angle of the sample is adjusted before the sample is released in the step 2. The problems that an existing falling method and device cannot achieve efficient and continuous release of a large number of samples, and the falling angle is single are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of test devices for the production of plastic packaging products, and particularly to a method and device for a drop test of plastic packaging products that can be continuously released. Background Art

[0002] Due to characteristics such as chemical corrosion resistance, good sealing and barrier properties, adjustable mechanical properties, and convenience for aseptic production, plastic materials have become commonly used outer packaging materials in the pharmaceutical field; especially for liquid materials such as injections, oral liquids, and external medicinal liquids, plastic outer packaging can achieve lightweight and impact resistance, thereby effectively ensuring the safety of the liquid medicine. According to the product production and manufacturing specifications in the pharmaceutical industry, after the product is encapsulated and packaged, a drop test is required to measure the anti-drop performance of the product, and this anti-drop performance is related to the safety and stability of the product during transportation, storage, and use. Among them, to exclude contingency or to fully test different (materials, specifications, liquid medicines, etc.) samples, it is often necessary to test a sufficient number of samples during the test process, which requires improving work efficiency through the efficient and continuous dropping of a large number of samples.

[0003] However, the traditional method for implementing a drop test relies on manual operation, that is, it is necessary to manually hold the pre-treated sample to a certain height and then release the sample from a specific angle so that the sample freely drops onto a hard, rigid, and smooth surface, and after the drop, it is necessary to manually check the appearance of the sample and make records. The inspection indicators include whether the outer packaging is cracked, deformed, whether the seal is cracked or loose, etc.; this method has problems such as low efficiency and high labor costs, and has been unable to meet the requirements of mass production and testing of modern products. In recent years, although some automated drop test devices have gradually emerged, which can effectively liberate manpower, these test devices also have limitations in actually being unable to efficiently and continuously release a large number of samples. Specifically: Existing drop test devices usually adopt the method of lifting a sample to a specified height by a clamping mechanism (such as a manipulator) and then releasing it. For example, a plastic product drop test device provided by the patent with the publication number CN213397571U; in this method, every time a sample is dropped, the clamping mechanism needs to first clamp the sample at the material taking position, then lift the sample to the specified height for release, and reset to the material taking position after releasing the sample. The actions in the above process are complex and time-consuming. Among them, the clamping mechanism needs to repeatedly rise and fall in a specific order, so it can only sequentially release a single sample through the periodic movement of the clamping mechanism, and cannot achieve the efficient and continuous release of multiple samples, which will affect the test efficiency and lengthen the test cycle. In addition, many existing test devices have a single drop angle for the sample, so they cannot achieve a sufficiently comprehensive test effect. For example, in the above patent, the sample is lifted and released by means of a hook and a suspension rope in the clamping mechanism, and the release angle of the sample cannot be changed.

[0004] In summary, the present invention provides a method and device for dropping test of plastic packaging products that can be continuously released. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and device for dropping test of plastic packaging products that can be continuously released, so as to solve the problems mentioned in the above background technology that the existing dropping methods and devices cannot achieve the efficient and continuous release of a large number of samples, and the dropping angle is single.

[0006] The present invention is implemented by adopting the following technical solutions: A method for dropping test of plastic packaging products that can be continuously released, comprising the following steps: Step 1: Convey a plurality of samples arranged at intervals to the dropping and releasing position in turn in the way of conveyor belt transmission; Step 2: At the dropping and releasing position, release the plurality of samples arriving in turn in sequence, so that the plurality of samples fall to the plane in sequence; Step 3: Visually inspect the plurality of samples that have fallen to the plane in sequence, complete the initial inspection of the appearance of the samples and record the initial inspection results, and separately collect the qualified samples and unqualified samples according to the initial inspection results; Among them, before releasing the sample in Step 2, the dropping angle of the sample is adjusted first.

[0007] A dropping test device for continuously releasable plastic packaging products, which is used to implement the above-mentioned dropping test method for continuously releasable plastic packaging products, includes a control part, a feeding part, a dropping and releasing part, and a dropping and receiving part. The feeding part, the dropping and releasing part, and the dropping and receiving part are respectively communicatively connected to the control part. The control part is used to coordinately control the operations of the feeding part, the dropping and releasing part, and the dropping and receiving part. The feeding part is used to sequentially convey a plurality of samples to the dropping and releasing part in a manner of conveyor belt transmission. The dropping and releasing part is used to adjust the dropping angle of the samples and sequentially release a plurality of samples. The dropping and receiving part is used to receive the samples and conduct preliminary inspection and classified collection on a plurality of samples.

[0008] Further, the feeding part includes a feeding conveyor belt, and a plurality of baffles are evenly arranged at intervals on the surface of the feeding conveyor belt. The feeding conveyor belt includes an inclined feeding section and a horizontal feeding section connected to each other, and the height of the inclined feeding section is lower than that of the horizontal feeding section.

[0009] Further, the dropping and releasing part is arranged on one side of the end of the horizontal feeding section. The dropping and releasing part includes a material conveying mechanism and a releasing mechanism. The material conveying mechanism includes a channel plate, and the channel plate and the baffle are arranged in a misaligned structure corresponding to each other. A trigger switch is arranged above the channel plate. The releasing mechanism includes a releasing platform, the releasing platform is a structure that can be opened and closed, and an angle adjustment module is arranged on the releasing platform. One side of the channel plate is the end of the horizontal feeding section, and the other side is the releasing platform. The channel plate is rotatably located on one side of the releasing platform in an inclined structure from high to low.

[0010] Further, the releasing platform includes two symmetric outer movable platforms and two symmetric inner movable platforms. The two inner movable platforms are adjacent and located between the two outer movable platforms. The two outer movable platforms move closer to or away from each other under the drive of corresponding opening and closing power mechanisms. The angle adjustment module includes two flipping seats, the two flipping seats are respectively fixedly connected to the bottoms of the two outer movable platforms, and the two inner movable platforms are respectively rotatably connected to the two flipping seats.

[0011] Further, a centering component is arranged above each of the two outer movable platforms. The centering component includes a centering power mechanism and a push plate, and the push plate is connected to the output end of the centering power mechanism.

[0012] Further, the angle adjustment module further includes a steering component, the steering component is arranged above the two inner movable platforms, and the steering component 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.

[0013] Further, a anti-falling plate is provided on one side of each of the two outer movable tables away from the channel plate, and a protective supporting plate is provided on one side of each of the two inner movable tables away from the channel plate. The lower ends of the two protective supporting plates are respectively fixedly connected to the corresponding inner movable tables.

[0014] Further, the dropping and receiving part includes a receiving mechanism and a vision detection mechanism. The receiving mechanism is arranged below the releasing mechanism, and the vision detection mechanism is arranged on one side of the receiving mechanism; the receiving mechanism includes a receiving platform and a material receiving component, and the vision detection mechanism includes an industrial camera configured to take pictures of the samples on the surface of the receiving platform.

[0015] Further, the material receiving component includes a blanking plate and a material receiving box. The blanking plate is arranged on the receiving platform, and the material receiving box is arranged beside the receiving platform; the blanking plate includes a qualified product blanking plate and a non-qualified product blanking plate, and the material receiving box includes a qualified product material receiving box and a non-qualified product material receiving box; the qualified product blanking plate and the non-qualified product blanking plate are distributed in an "L" shape on the receiving platform without contact, and the qualified product blanking plate and the non-qualified product blanking plate are configured to push the qualified samples and non-qualified samples into the qualified product material receiving box and the non-qualified product material receiving box respectively under the drive of the corresponding blanking power mechanism.

[0016] The beneficial effects achieved by the present invention are as follows: A method and device for drop test of plastic packaging products that can be continuously released are provided. By setting a control part, a feeding part, a dropping and releasing part, and a dropping and receiving part, and setting steps 1 to 3 performed based on the above structural part, a number of samples can be continuously fed in the way of conveyor belt transmission, and the samples can be dropped and released at a specific angle after reaching the dropping and releasing position. In addition, the samples can be automatically inspected initially and classified and collected after being dropped. Compared with the traditional test method relying on manual operation, the present invention realizes automation, can effectively liberate manpower and improve work efficiency; compared with the existing drop test device, the present invention can meet the requirement of continuously dropping a large number of samples during the test process, and can realize multi-angle dropping, so as to improve the test efficiency, shorten the test cycle, and enhance the comprehensiveness and accuracy of the test results. Description of the Drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the drop test device according to an embodiment of the present invention; Figure 2 is a front view schematic diagram of the overall structure of the drop test device according to an embodiment of the present invention; Figure 3 is a top view schematic diagram of the overall structure of the drop test device according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the overall structure of the drop release part in the drop test device according to an embodiment of the present invention; Figure 5 It is a schematic diagram of the material transfer mechanism and the release platform structure of the drop release part in the drop test device according to an embodiment of the present invention; Figure 6 It is a three-dimensional structure schematic diagram of the inner movable table of the drop release part in the drop test device according to an embodiment of the present invention; Figure 7 It is a side structure schematic diagram of the inner movable table of the drop release part in the drop test device according to an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of the flip seat of the drop release part in the drop test device according to an embodiment of the present invention; Figure 9 It is a schematic diagram of the structure of the steering component of the drop release part in the drop test device according to an embodiment of the present invention; Figure 10 It is a schematic diagram of the overall structure of the drop receiving part in the drop test device according to an embodiment of the present invention (including the protective cover); Figure 11 It is a schematic diagram of the overall structure of the drop receiving part in the drop test device according to an embodiment of the present invention (excluding the protective cover); Figure 12 It is a schematic diagram when the sample reaches the release platform from the channel plate in the drop test method according to an embodiment of the present invention; Figure 13 It is a schematic diagram of steering the sample in the drop test method according to an embodiment of the present invention Figure Ⅰ (with the bottle mouth facing outwards); Figure 14 It is a schematic diagram of steering the sample in the drop test method according to an embodiment of the present invention Figure Ⅱ (with the bottle bottom facing outwards); Figure 15 It is a schematic diagram of horizontally dropping and releasing the sample in the drop test method according to an embodiment of the present invention (with the bottle bottom facing outwards); Figure 16 It is a schematic diagram of adjusting the inclined drop angle of the sample in the drop test method according to an embodiment of the present invention (dropping with the bottle mouth facing downwards); Figure 17 It is a schematic diagram when releasing the inclined drop angle of the sample in the drop test method according to an embodiment of the present invention (dropping with the bottle mouth facing downwards); Figure 18 It is a schematic diagram of adjusting the vertical drop angle of the sample in the drop test method according to an embodiment of the present invention (dropping with the bottle mouth facing downwards); Figure 19It is a schematic diagram when the sample is vertically dropped and released at an angle in the drop test method described in the embodiment of the present invention (the bottle mouth drops downward); Figure 20 It is a schematic diagram of the working principle of the turning roller and the tension spring assembly when adjusting the drop height in the drop test method described in the embodiment of the present invention; In the figure: 1. Inclined feeding section; 2. Sample; 3. Baffle; 4. Limit rib; 5. Horizontal feeding section; 6. Column; 7. Industrial camera; 8. Protective cover; 9. Qualified product receiving box; 10. Unqualified product receiving box; 11. Openable baffle; 12. Lifting power module; 13. Tensioning roller; 14. Support guide plate; 15. Guide chute; 16. Fixed base; 17. Machine frame tabletop; 18. Tension spring; 19. Turning roller; 20. Support roller; 21. Driving roller; 22. Limit mounting plate; 23. Rotary power mechanism; 24. Centering power mechanism; 25. Openable power mechanism; 26. Inner movable table; 27. Anti-falling plate; 28. Rotary drive motor; 29. Protective support plate; 30. Outer movable table; 31. Pushing plate; 32. Photoelectric pair switch; 33. Channel plate; 34. Movable limit jaw; 35. Support groove; 36. Jaw groove; 37. Flipping seat; 38. Positioning hole; 39. Positioning pin; 40. Flipping drive motor; 41. Adapter plate; 42. Rotary rod; 43. Mounting frame; 44. Jaw rod; 45. Jaw plate; 46. Qualified product discharging plate; 47. Unqualified product discharging plate; 48. Material receiving platform. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Embodiment 1 In the first aspect of this embodiment, a drop test device for plastic packaging products with continuous release is provided, including a control part, a feeding part, a drop release part, and a drop receiving part. The feeding part, the drop release part, and the drop receiving part are respectively connected to the control part in communication (according to the actual situation, the control mechanism is arranged at a suitable position on the production site); the control part is used to coordinately control the work of the feeding part, the drop release part, and the drop receiving part. The feeding part is used to sequentially convey a plurality of bottled (in other embodiments, it can be other shapes according to the actual situation) samples 2 to the drop release part in the way of conveyor belt transmission. The drop release part is used to adjust the drop angle of the sample 2 and sequentially release a plurality of samples 2. The drop receiving part is used to receive the sample 2 and conduct preliminary inspection and classified collection on a plurality of samples 2. Among them: Please refer to Figures 1 to 3, the feeding part includes a feeding conveyor belt, a storage box (not shown in the figure), and an automatic feeding component (not shown in the figure). The feeding conveyor belt includes an inclined feeding section 1 and a horizontal feeding section 5 connected to each other. In this embodiment, the feeding part further includes a lifting drive mechanism, and the lifting drive mechanism includes a lifting power module 12 and a follower translation module. The follower translation module includes a steering roller 19 and a tension spring assembly. The tension spring assembly includes a support guide plate 14, a guide chute 15, a tension spring 18, and a fixed base 16. Specifically: In this embodiment, the feeding conveyor belt adopts a belt conveyor structure. The two rollers at both ends of the feeding conveyor belt are respectively located at a low height position and a high height position. The two ends of the tensioning roller 13 located at the low height position are respectively connected to the two support guide plates 14. The two ends of the driving roller 21 located at the high height position are respectively connected to the output ends of the lifting power module 12. The lifting power module 12 adopts a lead screw lifting module. A steering roller 19 is provided on one side of the driving roller 21 close to the tensioning roller 13. The steering roller 19 is at the same height position as the driving roller 21 and the two ends of the steering roller 19 are also respectively connected to the output ends of the lifting power module 12. Two support rollers 20 are also provided between the driving roller 21 and the steering roller 19. The two ends of the two support rollers 20 are also respectively connected to the output ends of the lifting power module 12. The belt is wound around the tensioning roller 13, the steering roller 19, the two support rollers 20, and the driving roller 21, thereby forming an inclined feeding section 1 and a horizontal feeding section 5 connected to each other. 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 one side of the head end (i.e., the tensioning roller 13) of the inclined feeding section 1. The automatic feeding component can adopt a manipulator or other feasible structures in the prior art.

[0020] The above two support guide plates 14 are respectively slidably connected in the two guide chutes 15 (a self-locking structure in the prior art is arranged in the guide chutes 15, that is, the support guide plate 14 cannot slide after automatic locking and can slide after the automatic locking is released. The self-locking structure is adapted to the start and stop of the lifting power module 12). One end of a tension spring 18 is respectively fixedly connected to the two support guide plates 14. The other ends of the two tension springs 18 are respectively connected to a fixed base 16. The two fixed bases 16 are respectively fixedly connected to the machine frame table 17. A number of baffles 3 are arranged at intervals on the surface of the above feeding conveyor belt, and a limiting rib 4 is arranged on the front side of each baffle 3 along the conveying direction.

[0021] Please refer to Figures 4 to 9, the drop release part is arranged on one side of the end of the horizontal feeding section 5 (i.e., the driving roller 21). The drop release part is integrally connected to the output end of the lifting power module 12. The drop release part includes a material transfer mechanism and a release mechanism. The material transfer mechanism includes a channel plate 33, and the release mechanism includes a release platform. The release platform is a structure that can be opened and closed, and an angle adjustment module is provided on the release platform. Specifically: 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 arranged on the outer sides of both ends of the channel plate 33 and the release platform. Photoelectric pair switches 32 (serving as trigger switches) are provided on the two limit mounting plates 22 corresponding to 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. The channel plate 33 and the baffle 3 are set to a tooth-shaped dislocation structure corresponding to each other. Among them, the channel plate 33 includes a mounting rod and a number of teeth. The number of teeth is evenly arranged on the mounting rod. One end of the mounting rod is connected to the output end of the rotary power mechanism 23. The rotary power mechanism 23 is installed on the outer side of one of the limit mounting plates 22. The rotary power mechanism 23 uses a motor.

[0022] The release platform includes two symmetric outer movable platforms 30 and two symmetric inner movable platforms 26. The two inner movable platforms 26 are adjacent and 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 outer sides of the two limit mounting plates 22. The opening and closing power mechanism 25 uses a telescopic cylinder. On one side of each of the two outer movable platforms 30 away from the channel plate 33, a anti-drop plate 27 is provided. The two anti-drop plates 27 are respectively connected to the two limit mounting plates 22. Above each of the two outer movable platforms 30, a centering component is provided. 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 outer sides of the two limit mounting plates 22. The centering power mechanism 24 uses a telescopic cylinder.

[0023] The angle adjustment module includes a steering component and two flipping seats 37. The two flipping 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 flipping seats 37. A flipping drive motor 40 is fixedly installed on one of the flipping seats 37. The output end of the flipping drive motor 40 extends into the interior of the inner movable platform 26 connected to the flipping seat 37. Two positioning pins 39 are provided on the side surface of the inner movable platform 26 adjacent to the other inner movable platform 26, and two positioning holes 38 adapted to the positioning pins 39 are correspondingly provided on the adjacent side surface of the other inner movable platform 26. In this embodiment, a protective support 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 support plates 29 are integrally connected to the outer edge of the corresponding inner movable platform 26. A support groove 35 is provided on the upper surface of each of the two inner movable platforms 26. The support groove 35 in this embodiment is strip-shaped and has a fan-shaped cross-section (in other embodiments, it can be adaptively set to other shapes according to the shape of the sample 2). The two support grooves 35 are adjacent and symmetrical to each other. The two support grooves 35 form a lower limit groove with a curvature, and the lower limit groove is located at the central position of the two inner movable platforms 26. A miniature rotation drive motor 28 is provided at the bottom of the outer side surface of each of the two protective support plates 29. The output ends of the two rotation drive motors 28 are respectively connected to a movable limit jaw 34. The two movable limit jaws 34 are symmetrically located on the two inner movable platforms 26. The movable limit jaw 34 includes a limit rod and two arc-shaped strips connected to both ends of the limit rod. One end of the movable limit jaw 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 strips on the two movable limit jaws 34 are designed with a common center of the circle. A jaw groove 36 is provided on each of the two inner movable platforms 26. The two jaw grooves 36 are respectively located on the side of the two support grooves 35 close to the outer movable platform 30. The jaw groove 36 is adapted to the movable limit jaw 34.

[0024] The steering assembly includes a mounting bracket 43. The two ends of the mounting bracket 43 are respectively connected to two limit mounting plates 22. A rotary power mechanism 23 for steering and a lifting power mechanism for steering are provided on the mounting bracket 43. The output ends of the rotary power mechanism 23 for steering and the lifting power mechanism for steering are connected to a steering claw, and the steering claw is located above the two inner movable platforms 26. Among them, the rotary power mechanism 23 for steering adopts a combination of a motor, a driving gear, a driven gear and a belt, and the lifting power mechanism for steering adopts a cylinder. The piston rod of the cylinder is connected to the upper end of a rotating rod 42 through an adapter plate 41. The rotating rod 42 rotatably passes 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 connected to each of the four corners of the lower surface of the claw plate 45. The lower ends of the four claw rods 44 are all designed to extend obliquely outwards (so that it can adapt to the change of the position of the sample 2 and has a certain error tolerance).

[0025] Please refer to Figures 10 to 11 , the dropping and material receiving part includes a material receiving mechanism and a visual inspection mechanism. The material receiving mechanism is arranged below the releasing 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 collecting assembly. The visual inspection mechanism includes an industrial camera 7, and the industrial camera 7 is configured to take pictures of the sample 2 on the surface of the material receiving platform 48. Specifically: In this embodiment, the material receiving platform 48 is a quadrilateral hard and smooth surface platform, and a protective cover 8 made of transparent material is covered on the material receiving platform 48. The protective cover 8 only has four sides and does not have an upper surface and a lower surface; the material collecting assembly includes a blanking plate and a material collecting box. Among them, the blanking plate includes a qualified product blanking plate 46 and a non-qualified product blanking plate 47. 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. 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 touch each other; the qualified product blanking plate 46 and the non-qualified product blanking plate 47 are located inside the protective cover 8, and two blanking power mechanisms are arranged outside the protective cover 8. The qualified product blanking plate 46 and the non-qualified product blanking plate 47 are respectively connected to the output ends of the two blanking power mechanisms through openings opened on the protective cover 8. The blanking power mechanism uses a telescopic cylinder; at the bottom positions of the two surfaces of the protective cover 8 facing the qualified product blanking plate 46 and the non-qualified product blanking plate 47, a switching baffle 11 is provided. The upper edge of the switching baffle 11 is hinged on the surface of the protective cover 8. The length of the switching baffle 11 is close to the side length of the protective cover 8, and the height is greater than the height of the sample 2. A qualified product collecting box 9 and a non-qualified product collecting box 10 are respectively arranged on one side of the material receiving platform 48 outside the two switching baffles 11. In the visual inspection mechanism, the industrial camera 7 is installed on the liftable column 6 in an angle-adjustable manner (the angle adjustment structure and the lift structure adopt existing structures). An optoelectronic trigger switch is provided on the column 6 above the industrial camera 7, and the optoelectronic trigger switch detects in the direction of the release mechanism.

[0026] In the second aspect of this embodiment, a method for dropping test of plastic packaging products that can be continuously released is provided. Using the above-mentioned dropping test device, it includes the following steps: Step 1: In the way of conveyor belt transmission, a plurality of samples 2 arranged at intervals are sequentially conveyed to the dropping release position. Specifically: Under the control of the control part, the automatic feeding component on one side of the inclined feeding section 1 will automatically take out the samples 2 from the storage box continuously and place the samples 2 continuously in front of the current receiving baffle 3 along the transmission direction; the placed samples 2 will move from the inclined feeding section 1 to the horizontal feeding section 5 at a specified height along with the operation of the feeding conveyor belt, and reach the dropping release part through the transmission of the horizontal feeding section 5.

[0027] Among them, if it is necessary to change the dropping height, the lifting power module 12 can be started so that the horizontal feeding section 5 of the feeding conveyor belt and the dropping release part perform corresponding vertical lifting; at the same time, please refer to Figure 20, as the horizontal loading section 5 rises and falls, the inclined loading section 1 will perform corresponding horizontal translation under the action of the turning roller 19 and the tension 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 the normal feeding).

[0028] Step 2: At the drop release position, a number of sequentially arriving samples 2 are released in sequence, so that the number of samples 2 fall onto the plane in sequence; among them, before releasing the sample 2, the drop angle of the sample 2 is adjusted first. Specifically: 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 along with the inclination and rotation of the channel plate 33; among them, when the sample 2 falls onto the channel plate 33, the photoelectric pair-switch 32 above the channel plate 33 will detect a signal, so under the trigger of this signal, the rotation power mechanism 23 will drive the channel plate 33 to rotate towards the release platform side (with the mounting rod of the channel plate 33 as the rotation axis; 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 perform relative movement simultaneously at a specified time (set in the control part, a specific time after the photoelectric pair-switch 32 detects a signal, this specific time is the time when the push plate 31 should act; the power mechanisms in the subsequent drop release part, the industrial camera 7 and the feeding power mechanism in the drop receiving part all start to act according to this principle and will not be elaborated), so as to center the sample 2 that reaches the release platform; then the lifting power mechanism for turning will drive the turning claw to descend, so that the four claw rods 44 of the turning claw are distributed around the sample 2, and then the rotating power mechanism 23 for turning will drive the turning claw to rotate, so that the four claw rods 44 push the sample 2 to rotate 90° counterclockwise or clockwise, so that the sample 2 becomes a state with the bottle mouth facing outwards (outwards refers to the direction towards the protective supporting plate 29) or the bottle bottom facing outwards and falls into the supporting groove 35, please refer to Figure 13 and Figure 14 ; after the above adjustments, If the sample 2 needs to be released by horizontal dropping, the opening and closing power mechanism 25 will drive the two outer movable platforms 30 to move away from each other simultaneously. Since the two inner movable platforms 26 are respectively connected to the two outer movable platforms 30 through the flipping seats 37, the two inner movable platforms 26 will move away from each other along with the two outer movable platforms 30, so that the sample 2 can be released, please refer to Figure 15 . After releasing the sample 2, the opening and closing power mechanism 25 will drive the two outer movable platforms 30 to drive the two inner movable platforms 26 to reset.

[0029] If it is necessary to release the sample 2 at an inclined / vertical drop angle, it is necessary to first adjust the inclined / vertical drop angle of the sample 2. Specifically: the flipping drive motor 40 operates, driving the two inner movable platforms 26 to flip to a specific inclined / vertical angle simultaneously. Please refer to Figure 16 / Figure 18 ; Before the flipping starts, the two rotary drive motors 28 will drive the two movable limit jaws 34 to move closer simultaneously to limit the sample 2 to 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 reset 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 drop angle. Please refer to Figure 17 / Figure 19 . After the sample 2 is released, the opening and closing power mechanism 25 first drives the two outer movable platforms 30 to move closer to the two inner movable platforms 26 (so that the positioning pins 39 are inserted into the positioning holes 38), and then the flipping drive motor 40 drives the two inner movable platforms 26 to reset to the horizontal state.

[0030] Step 3: Visually inspect several samples 2 that have fallen onto the plane in sequence, complete the preliminary inspection of the appearance of the samples 2 and record the preliminary inspection results, and separately collect the qualified samples 2 and unqualified samples 2 according to the preliminary inspection results. Specifically: After the sample 2 is released, the photoelectric trigger switch will detect a signal, and then the control part will control the industrial camera 7 to take a picture of the upper surface of the receiving platform 48 at a specified time to obtain the state image of the sample 2 and perform recognition and analysis to determine whether there are obvious cracks, deformations, etc. in the packaging of the sample 2, so as to complete the preliminary inspection of the sample 2 and initially classify the sample 2 into qualified samples 2 and unqualified samples 2; according to the classification results, the corresponding blanking power mechanism will drive the qualified product blanking plate 46 or the unqualified product blanking plate 47 to act to push the sample 2 to push open the opening and closing baffle 11 and fall into the qualified product collection box 9 or the unqualified product collection box 10. Based on this, this drop test device can complete the preliminary sorting of the qualified samples 2 and unqualified samples 2 when collecting the samples 2, and thus can save the workload of subsequent detailed sorting and other processes, thereby effectively improving work efficiency.

[0031] In summary, the drop test method and device for continuously releasable plastic packaging products provided in this embodiment have multiple advantages compared with the prior art. Specifically: First, it can continuously feed a number of samples 2 in the form of conveyor belt transmission, and drop and release them after the samples 2 reach the drop release position, which can meet the requirement of continuously dropping a large number of samples 2 during the test, and thus improve the test efficiency and shorten the test cycle. Second, the drop angle and drop height of the samples 2 can be adjusted as needed, so as to achieve a more comprehensive test effect. Third, it can automatically conduct preliminary inspection and classified collection on the dropped samples 2, which helps to save the subsequent workload and thus improve the efficiency of the overall manufacturing production line.

[0032] It should be particularly noted that the parts not described in detail or expanded in the above solutions, 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, not the improvements made by the present invention to the prior art, nor within the protection scope of the technical solution of the present invention. Therefore, they will not be elaborated herein. Of course, the above content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples. Equivalent changes and improvements made by ordinary technical personnel in the technical field of the present invention within the substantial scope of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. A method for the drop test of a continuously releasable plastic packaging product, characterized in that, It includes the following steps: Step 1: Convey a number of samples (2) arranged at intervals to the drop release position in sequence by means of a conveyor belt; Step 2: At the drop release position, release the number of samples (2) that arrive in sequence in order, so that the number of samples (2) fall to the plane in order; Step 3: Visually inspect the number of samples (2) that have fallen to the plane in order, complete the initial inspection of the appearance of the samples (2) and record the initial inspection results, and separately collect the qualified samples (2) and unqualified samples (2) according to the initial inspection results; Among them, before releasing the sample (2) in Step 2, the drop angle of the sample (2) is adjusted first.

2. A drop test device for a continuously releasable plastic packaging product, which is used to implement the drop test method for the continuously releasable plastic packaging product described in claim 1, and is characterized in that: It includes a control part, a feeding part, a drop release part and a drop receiving part. The feeding part, the drop release part and the drop receiving part are respectively communicatively connected to the control part; The control part is used to coordinately control the operations of the feeding part, the drop release part and the drop receiving part. The feeding part is used to convey a number of samples (2) 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 sample (2) and release a number of samples (2) in order. The drop receiving part is used to receive the samples (2) and conduct an initial inspection and classified collection of the number of samples (2).

3. The drop test device for continuously releasable plastic packaging products according to claim 2, characterized in that: The feeding part includes a feeding conveyor belt. A number of baffles (3) are evenly arranged at intervals on the surface of the feeding conveyor belt; The feeding conveyor belt includes an inclined feeding section (1) and a horizontal feeding section (5) connected to each other. The height of the inclined feeding section (1) is lower than the height of the horizontal feeding section (5).

4. The drop test device for continuously releasable plastic packaging products according to claim 3, characterized in that: The drop release part is arranged on one side of the end of the horizontal feeding section (5). The drop release part includes a material transfer mechanism and a release mechanism; The material transfer mechanism includes a channel plate (33). The channel plate (33) and the baffle (3) are arranged in a misaligned structure corresponding to each other. A trigger switch is arranged above the channel plate (33); The release mechanism includes a release platform. The release platform is a structure that can be opened and closed, and an angle adjustment module is arranged on the release platform; One side of the channel plate (33) is the end of the horizontal feeding section (5), and the other side is the release platform. The channel plate (33) is rotatably located on one side of the release platform in an inclined structure from high to low.

5. The drop test device for continuously releasable plastic packaging products according to claim 4, characterized in that: The release platform includes two symmetric outer movable platforms (30) and two symmetric inner movable platforms (26). The two inner movable platforms (26) are adjacent and located between the two outer movable platforms (30). 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 includes two flipping seats (37). The two flipping seats (37) are respectively fixedly connected to the bottoms of the two outer movable platforms (30). The two inner movable platforms (26) are respectively rotatably connected to the two flipping seats (37).

6. The drop test device for continuously releasable plastic packaging products according to claim 5, characterized in that: One centering component is arranged above each of the two outer movable platforms (30). 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).

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

8. The drop test device for continuously releasable plastic packaging products according to claim 5, characterized in that: One anti-falling plate (27) is provided on each side of the two outer movable platforms (30) away from the channel plate (33), and one 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).

9. The drop test device for continuously releasable plastic packaging products according to claim 4, characterized in that: The dropping and receiving part includes a receiving mechanism and a visual detection mechanism. The receiving mechanism is arranged below the releasing mechanism, and the visual detection mechanism is arranged on one side of the receiving mechanism; the receiving mechanism includes a receiving platform (48) and a material receiving component, and the visual detection mechanism includes an industrial camera (7). The industrial camera (7) is configured to take pictures of the sample (2) on the surface of the receiving platform (48).

10. The drop test device for continuously releasable plastic packaging products according to claim 9, characterized in that: The material receiving component includes a blanking plate and a material receiving box. The blanking plate is arranged on the receiving platform (48), and the material receiving box is arranged beside the 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 material receiving box (9) and a non-qualified product material receiving box (10); the qualified product blanking plate (46) and the non-qualified product blanking plate (47) are distributed in a shape similar to an "L" on the receiving platform (48) and do not touch each other. The qualified product blanking plate (46) and the non-qualified product blanking plate (47) are configured to push the qualified samples (2) and the non-qualified samples (2) into the qualified product material receiving box (9) and the non-qualified product material receiving box (10) respectively under the drive of the corresponding blanking power mechanism.

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