Automatic forming, cutting and code spraying equipment for plastic packaging shell

Abstract

The application discloses a kind of plastic packaging shell automatic forming cutting code spraying equipment, including rack, pay-off feeding mechanism, deviation rectifying mechanism, slitting mechanism, stamping forming mechanism, cutting mechanism, discharging manipulator, discharging conveyor and detection code spraying device;Slitting mechanism is used to be divided into two independent plastic sheet along the longitudinal direction by plastic sheet;Stamping forming mechanism is used to form two plastic packaging shells on plastic sheet;Cutting mechanism is used to cut and separate plastic packaging shell, and discharging manipulator can be adsorbed and transferred to discharging conveyor on plastic packaging shell, and carry out defect detection and code spraying by detection code spraying device.The application is divided into two independent sheet by slitting mechanism, deviation rectifying sensor cooperates with position adjustment assembly, can improve the alignment accuracy of plastic sheet and stamping forming mechanism;Discharging manipulator and detection code spraying device cooperate, can complete automatic discharging, defective product rejection and code spraying, effectively improve the processing efficiency and quality of product.

Description

Technical Field

[0001] This invention relates to the field of plastic packaging shell forming equipment, and more particularly to an automatic forming, cutting and coding equipment for plastic packaging shells. Background Technology

[0002] Plastic packaging shells are packaging products made from plastic sheets through processes such as molding and cutting. They are characterized by high transparency, light weight, and ease of product display, and are widely used in the packaging of mobile phones and their accessories.

[0003] In existing technologies, plastic packaging shells typically require multiple processes, including sheet unwinding, forming, cutting, blanking, quality inspection, and coding. Some processes are completed by independent equipment and require manual intervention or separate transfer devices for connection, which can easily lead to discontinuous production processes, inconsistent equipment coordination rhythms, and low production efficiency. Furthermore, plastic sheets are prone to lateral shifting during long-distance transport and intermittent processing, causing deviations between the sheet and the forming mold and cutting position, resulting in issues such as misaligned forming positions, uneven cutting edges, or product damage. In addition, the thinness of the formed plastic packaging shells makes them susceptible to movement or deformation during cutting, transfer, and inspection. Existing equipment struggles to stably position them and promptly separate defective products from the production process, leading to defective products entering the subsequent coding process, impacting product quality and cost.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic forming, cutting and coding equipment for plastic packaging shells with high production efficiency, accurate processing and positioning, and a high degree of automation.

[0006] To achieve this objective, the present invention adopts the following technical solution: an automatic forming, cutting and coding equipment for plastic packaging shells, including a frame, an unwinding and feeding mechanism, a correction mechanism, a slitting mechanism, a stamping and forming mechanism, a cutting mechanism, a pulling mechanism, a feeding robot, a feeding conveyor belt and a coding detection device; The unwinding and feeding mechanism is located at the bottom of the frame and is used to support the plastic sheet roll. The unwinding and feeding mechanism, the slitting mechanism, the stamping and forming mechanism, and the cutting mechanism are sequentially arranged on the frame along the conveying direction of the plastic sheet; The cutting mechanism is used to cut the plastic sheet into two independent plastic sheets along the longitudinal direction. The correction mechanism includes a correction sensor and a position adjustment component, wherein the correction sensor is disposed between the cutting mechanism and the stamping mechanism; The position adjustment component is connected to the unwinding and feeding mechanism to drive the unwinding and feeding mechanism to move along the width direction of the plastic sheet according to the position deviation detected by the correction sensor. The stamping mechanism is used to simultaneously stamp two plastic sheets to form two plastic packaging shells; The cutting mechanism is located at the discharge end of the stamping and forming mechanism to cut and separate the two plastic packaging shells from the corresponding plastic sheets respectively. The material pulling mechanism is located on one side of the cutting mechanism, and the material pulling mechanism is used to drive the two plastic sheets to move intermittently along the conveying direction; The unloading robot is located above the cutting mechanism. The unloading robot is used to absorb and transfer the cut and separated plastic packaging shells onto the unloading conveyor belt. The detection and coding device is located on the unloading conveyor belt to detect defects in the plastic packaging shells and to code the qualified plastic packaging shells.

[0007] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the unwinding and feeding mechanism includes an unwinding base, an unwinding bracket, an unwinding shaft, an unwinding drive assembly and multiple sets of redirecting rollers; The unwinding bracket is movably disposed on the unwinding base along the width direction of the plastic sheet, the unwinding shaft is rotatably disposed on the unwinding bracket and used to mount the plastic sheet roll, the unwinding drive assembly is disposed on the unwinding bracket and connected to the unwinding shaft, and the unwinding drive assembly is used to drive the unwinding shaft to rotate to realize unwinding; Multiple sets of redirecting rollers are spaced apart on the unwinding base along the conveying direction of the plastic sheet. The plastic sheet is sequentially wound around the multiple sets of redirecting rollers and conveyed to the slitting mechanism via the redirecting rollers.

[0008] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the position adjustment component includes a first lateral guide component, a first correction drive component, a second lateral guide component and a second correction drive component; The unwinding bracket is movably mounted on the unwinding base via the first transverse guide assembly. The first correction drive assembly is connected to the unwinding bracket and is used to drive the unwinding bracket to move along the width direction of the plastic sheet. The unwinding base is movably mounted on the frame via the second transverse guide assembly. The second correction drive assembly is connected to the unwinding base and is used to drive the unwinding feeding mechanism to move along the width direction of the plastic sheet. The first and second correction drive components are used to adjust the lateral position of the plastic sheet according to the position deviation detected by the correction sensor.

[0009] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the cutting mechanism includes a cutting support frame, a cutting pressure plate, a floating plate, a floating lifting cylinder, a cutting moving component and a cutting blade; The slitting support frame is mounted on the machine frame, the slitting pressure plate is located above the slitting support frame, the floating plate is located below the slitting pressure plate, and a material passage gap is formed between the slitting pressure plate and the floating plate for the plastic sheet to pass through. The floating lifting cylinder is located below the floating plate and connected to the floating plate. The floating lifting cylinder is used to drive the floating plate closer to or further away from the cutting plate to adjust the material passage gap. The slitting platen is provided with a slitting groove extending along the conveying direction of the plastic sheet. The slitting groove is located between two sets of die punches. The slitting blade is connected to the slitting moving assembly and extends into the material passage gap. The slitting moving assembly is used to drive the slitting blade to move along the extension direction of the slitting groove so as to slit the plastic sheet located in the material passage gap into two independent plastic sheets.

[0010] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the stamping forming mechanism includes a forming support frame, an upper mold assembly, a lower mold assembly, an upper mold drive assembly and a lower mold drive assembly; The upper mold assembly and the lower mold assembly are disposed opposite each other on the molding support frame, and the two plastic sheets pass through the upper mold assembly and the lower mold assembly; The upper mold assembly includes an upper mold base and two sets of mold punches disposed on the upper mold base, the two sets of mold punches being spaced apart along the width direction of the plastic sheet; The lower die assembly includes a lower die core, and the lower die core is provided with two sets of forming grooves that correspond one-to-one with the two sets of die punches; The upper mold drive assembly is connected to the upper mold assembly, and the lower mold drive assembly is connected to the lower mold assembly. The upper mold drive assembly and the lower mold drive assembly are respectively used to drive the upper mold assembly and the lower mold assembly to move synchronously towards each other, so that the two sets of mold punches respectively cooperate with the corresponding forming grooves and simultaneously stamp the two plastic sheets.

[0011] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the cutting mechanism includes a cutting support frame, a cutting lifting seat, a cutting blade, a cutting base, a support positioning plate, a cutting lifting cylinder and a cutting guide assembly; The cutting blade is mounted on the cutting lifting seat and extends along the width direction of the plastic sheet. The cutting lifting seat can be raised and lowered on the cutting support frame via the cutting guide assembly. The cutting base is located below the cutting blade. The cutting lifting cylinder is connected to the cutting lifting base and is used to drive the cutting blade to approach the cutting base so as to cut two pieces of the plastic sheet by the cutting blade; The support positioning plate is located on the discharge side of the cutting mechanism. The support positioning plate is provided with two contour positioning grooves spaced apart along the width direction of the plastic sheet. The contour positioning grooves are used to accommodate the plastic packaging shells so as to limit the two plastic packaging shells when the cutting mechanism cuts two plastic sheets. The cutting base is provided with a material slide and a waste box below it. The material slide extends at an incline toward the waste box and is used to guide the debris generated during cutting into the waste box.

[0012] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the material pulling mechanism includes a movable material pulling frame, a slide rail assembly, a material pulling drive assembly and multiple sets of clamping assemblies; Two sets of slide rail assemblies are arranged parallel to each other on both sides of the frame. The movable material pulling frame is movably mounted on the frame via the slide rail assemblies. The material pulling drive assembly is connected to the movable material pulling frame and is used to drive the movable material pulling frame to reciprocate along the conveying direction of the plastic sheet. Multiple sets of the clamping assemblies are spaced apart on the movable pulling frame along the width direction of the plastic sheet, and are used to clamp or release the ends of the plastic sheet; The clamping assembly is used to release the two plastic sheets after cutting and to re-clamp the uncut ends of the plastic sheets after the two plastic packaging shells separated by the cutting are taken away by the unloading robot.

[0013] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the unloading robot includes a gantry support frame, a transverse seat, a transverse drive assembly, a lifting cylinder, a spacing adjustment assembly, and two adsorption assemblies; The gantry support frame is mounted on the machine frame, the transverse shift seat is slidably mounted on the bottom of the gantry support frame, and the transverse shift drive assembly is connected to the transverse shift seat to drive the transverse shift seat to move between the cutting mechanism and the unloading conveyor belt; The two lifting cylinders are spaced apart along the width direction of the plastic sheet and are respectively connected to the spacing adjustment component. The lifting cylinders are connected to the adsorption component to drive the adsorption component to move up and down in the vertical direction. The spacing adjustment component is used to drive the two lifting cylinders to move closer or further apart, so as to adjust the distance between the two adsorption components; Each of the adsorption components includes an adsorption plate and multiple vacuum suction cups, which are spaced apart on the adsorption plate and used to adsorb the corresponding plastic packaging shell.

[0014] The above-mentioned automatic forming, cutting and coding equipment for plastic packaging shells also includes a transfer conveyor belt, which is located between the frame and the unloading conveyor belt. The transfer conveyor belt is used to receive the plastic packaging shells adsorbed and transferred by the unloading robot and to transport the plastic packaging shells to the unloading conveyor belt.

[0015] Using the above technical solution, in the automatic forming, cutting and coding equipment for plastic packaging shells, the detection coding device includes a feeding guide component, a material transfer mechanism, a material transfer cylinder, a CCD detection component, a material pushing mechanism, a defective product box and a coding mechanism; The material transfer mechanism includes two material transfer plates arranged at a distance from each other, and a product carrying area for placing the plastic packaging shell is formed between the two material transfer plates; The feeding guide assembly is disposed on the unloading conveyor belt and is used to guide the plastic packaging shell to the product carrying area; The material transfer mechanism is movably disposed between the unloading conveyor belt and the CCD detection component. The material transfer cylinder is connected to the material transfer mechanism and is used to drive the material transfer mechanism to reciprocate between the conveying position located on the unloading conveyor belt and the detection position located below the CCD detection component. The CCD detection component is used to detect defects in the plastic packaging shell located at the detection position, and the material transfer mechanism is used to send the qualified plastic packaging shell back to the original conveying position of the unloading conveyor belt. The pushing mechanism includes a pushing cylinder, a pushing guide assembly, and a rejection pushing component. The rejection pushing component is slidably disposed on one side of the product carrying area via the pushing guide assembly. The pushing cylinder is connected to the rejection pushing component and is used to drive the rejection pushing component to move toward the defective product box, so as to push the plastic packaging shells that are located in the product carrying area and fail the inspection to the defective product box. The coding mechanism is located at the discharge end of the unloading conveyor belt and is used to code the plastic packaging shells that have passed inspection and are returned to the unloading conveyor belt.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a slitting mechanism to divide a plastic sheet into two independent plastic sheets. A correction sensor detects the positional deviation of the plastic sheets, causing a position adjustment component to move the unwinding and feeding mechanism along the width of the plastic sheets. This improves the alignment accuracy between the plastic sheets and the subsequent stamping and forming mechanism. The stamping and forming mechanism can simultaneously form two plastic packaging shells within the same processing cycle. The pulling mechanism can move the two plastic sheets intermittently, allowing the cutting mechanism to simultaneously cut and separate the two plastic packaging shells, effectively improving the utilization rate and processing efficiency of the plastic sheets. Simultaneously, a robotic arm can absorb and transfer the cut plastic packaging shells to the unloading conveyor belt, where a detection and coding device performs defect detection, separation of non-conforming products, and coding of conforming products, effectively improving the production continuity, positioning accuracy, and product quality of the plastic packaging shells. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the unwinding and feeding mechanism of the present invention; Figure 3 This is a schematic diagram of the position adjustment component structure of the present invention; Figure 4 This is a schematic diagram of the unwinding and feeding mechanism of the present invention; Figure 5 This is a schematic diagram of the slitting mechanism structure of the present invention; Figure 6 This is a schematic diagram of the slitting mechanism of the present invention from another perspective; Figure 7 This is a schematic diagram of the stamping mechanism of the present invention; Figure 8 This is a schematic diagram of the upper mold assembly structure of the present invention; Figure 9This is a schematic diagram of the cutting mechanism structure of the present invention; Figure 10 This is a schematic diagram of the material pulling mechanism of the present invention; Figure 11 This is a schematic diagram of the unloading robot structure of the present invention; Figure 12 This is a schematic diagram of the installation structure of the spacing adjustment component of the present invention; Figure 13 This is a schematic diagram of the structure of the inkjet printing detection device of the present invention; Figure 14 This is a schematic diagram of the feeding mechanism of the present invention. Detailed Implementation

[0020] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 14As shown, this embodiment of the invention provides an automatic forming, cutting, and coding equipment for plastic packaging shells, including a frame 1, an unwinding and feeding mechanism 2, a correction mechanism 3, a slitting mechanism 4, a stamping and forming mechanism 5, a cutting mechanism 6, a pulling mechanism 7, a feeding robot 8, a feeding conveyor belt 10, and a coding detection device 11. The unwinding and feeding mechanism 2 is located at the bottom of the frame 1 and is used to carry the plastic sheet roll. The unwinding and feeding mechanism 2, the slitting mechanism 4, the stamping and forming mechanism 5, and the cutting mechanism 6 are sequentially arranged on the frame 1 along the conveying direction of the plastic sheet. The slitting mechanism 4 is used to slit the plastic sheet to divide it into two independent plastic sheets along the longitudinal direction. The correction mechanism 3 includes a correction sensor 31 and a position adjustment component 32. The correction sensor 31 is located between the slitting mechanism 4 and the stamping and forming mechanism 5, and the position adjustment component 32 is located between the unwinding and feeding mechanism 4 and the stamping and forming mechanism 5. The structure 2 is connected to drive the unwinding and feeding mechanism 2 to move along the width direction of the plastic sheet according to the position deviation detected by the correction sensor 31. The stamping and forming mechanism 5 is used to simultaneously stamp and form two plastic sheets to form two plastic packaging shells. The cutting mechanism 6 is located at the discharge end of the stamping and forming mechanism 5 to cut and separate the two plastic packaging shells from the corresponding plastic sheets. The pulling mechanism 7 is located on one side of the cutting mechanism 6 and is used to drive the two plastic sheets to move intermittently along the conveying direction. The unloading robot 8 is located above the cutting mechanism 6 and is used to adsorb and transfer the cut and separated plastic packaging shells onto the unloading conveyor belt 10. The detection and coding device 11 is located on the unloading conveyor belt 10 to detect defects in the plastic packaging shells and to code the qualified plastic packaging shells.In this embodiment, after the plastic sheet roll is unwound by the unwinding and feeding mechanism 2, the plastic sheet passes sequentially along the frame 1 through the slitting mechanism 4, the web guiding mechanism 3, the stamping and forming mechanism 5, the cutting mechanism 6, the pulling mechanism 7, the unloading robot 8, the unloading conveyor belt 10, and the detection and coding device 11. The slitting mechanism 4 first slits the plastic sheet along its longitudinal direction, forming two independent plastic sheets from one sheet. This allows the stamping and forming mechanism 5 to simultaneously stamp the two plastic sheets within the same processing cycle, thereby forming two plastic packaging shells at once, improving the utilization rate and forming efficiency of the plastic sheet. The web guiding sensor 31 is located between the slitting mechanism 4 and the stamping and forming mechanism 5, and can detect the positional deviation of the two plastic sheets before they enter the stamping and forming mechanism 5. The position adjustment component 32 moves the unwinding and feeding mechanism 2 along the width direction of the plastic sheet according to the detection result of the web guiding sensor 31, so that the two plastic sheets are accurately aligned with the corresponding parts of the stamping and forming mechanism 5. To reduce the problems of forming position deviation and uneven cutting caused by sheet offset, the feeding mechanism 7 can drive two plastic sheets to move intermittently along the conveying direction, so that the plastic sheets enter the stamping forming mechanism 5 and the cutting mechanism 6 in sequence according to the predetermined processing pitch, and make the stamping forming, cutting and unloading actions cooperate with each other. After the two plastic packaging shells move to the cutting position, the cutting mechanism 6 cuts and separates the two plastic packaging shells from the corresponding plastic sheets respectively. The unloading robot 8 then adsorbs and transfers the two cut and separated plastic packaging shells to the unloading conveyor belt 10, avoiding product deformation or position offset caused by manual material handling. The unloading conveyor belt 10 can continuously transport the plastic packaging shells to the detection and coding device 11, which performs defect detection on the plastic packaging shells, separates the unqualified plastic packaging shells from the production process, and engraves the qualified plastic packaging shells, thereby realizing continuous automated processing of plastic sheets, improving the processing efficiency, positioning accuracy and production quality of plastic packaging shells.

[0024] like Figures 2 to 4As shown, the unwinding and feeding mechanism 2 further includes an unwinding base 21, an unwinding bracket 22, an unwinding shaft 23, an unwinding drive assembly 24, and multiple sets of redirecting rollers 25. The unwinding bracket 22 is movably disposed on the unwinding base 21 along the width direction of the plastic sheet. The unwinding shaft 23 is rotatably disposed on the unwinding bracket 22 and is used to mount the plastic sheet roll. The unwinding drive assembly 24 is disposed on the unwinding bracket 22 and connected to the unwinding shaft 23. The unwinding drive assembly 24 is used to drive the unwinding shaft 23 to rotate to realize unwinding. The multiple sets of redirecting rollers 25 are spaced apart on the unwinding base 21 along the conveying direction of the plastic sheet. The plastic sheet is sequentially wound around the multiple sets of redirecting rollers 25 and conveyed to the slitting mechanism 4 via the redirecting rollers 25. In this embodiment, after the plastic sheet is unwound from the plastic sheet roll, it is sequentially wound around multiple sets of redirecting rollers 25. The multiple sets of redirecting rollers 25 can adjust the conveying direction of the plastic sheet and support and flatten the plastic sheet during the conveying process, so that the plastic sheet is smoothly conveyed to the slitting mechanism 4 at a predetermined height and direction, while buffering the slack and tension fluctuations during the unwinding process. The unwinding bracket 22 is movable on the unwinding base 21 along the width direction of the plastic sheet, so that the unwinding bracket 22 can drive the unwinding shaft 23 and the plastic sheet roll to adjust the lateral position relative to the redirecting rollers 25, thereby compensating for the deviation caused by the installation position of the plastic sheet roll or the change of the roll width, reducing the occurrence of diagonal pulling, wrinkling or lateral displacement of the plastic sheet during the conveying process, and effectively improving the positional accuracy of subsequent slitting and stamping.

[0025] like Figure 3As shown, the position adjustment component 32 further includes a first lateral guide component 321, a first correction drive component 322, a second lateral guide component 323, and a second correction drive component 324. The unwinding bracket 22 is movably mounted on the unwinding base 21 via the first lateral guide component 321. The first correction drive component 322 is connected to the unwinding bracket 22 and is used to drive the unwinding bracket 22 to move along the width direction of the plastic sheet. The unwinding base 21 is movably mounted on the frame 1 via the second lateral guide component 323. The second correction drive component 324 is connected to the unwinding base 21 and is used to drive the unwinding feeding mechanism 2 to move along the width direction of the plastic sheet. The first correction drive component 322 and the second correction drive component 324 are used to adjust the lateral position of the plastic sheet according to the position deviation detected by the correction sensor 31. In this embodiment, by setting a first lateral guide component 321 and a first correction drive component 322 between the unwinding bracket 22 and the unwinding base 21, and setting a second lateral guide component 323 and a second correction drive component 324 between the unwinding base 21 and the frame 1, the position adjustment component 32 can adjust the unwinding position of the plastic sheet roll and the overall installation position of the unwinding feeding mechanism 2 respectively. After the plastic sheet is divided into two independent plastic sheets by the slitting mechanism 4, the correction sensor 31 can detect the lateral position of the two plastic sheets before entering the stamping forming mechanism 5. When there is a small positional deviation of the plastic sheet, the first correction drive component 322 drives the unwinding bracket 22 to move along the first lateral guide component 321, so that the unwinding bracket 22 drives the plastic sheet roll to move laterally relative to the unwinding base 21, thereby adjusting the initial output position of the plastic sheet and compensating for the axial position of the core of the plastic sheet roll. The deviation; when the plastic sheet output by the unwinding and feeding mechanism 2 does not correspond to the processing reference position of the subsequent slitting mechanism 4, stamping and forming mechanism 5 and cutting mechanism 6, the second correction drive component 324 can drive the unwinding base 21 to move along the second transverse guide component 323, so that the unwinding base 21 drives the unwinding and feeding mechanism 2 as a whole to move along the width direction of the plastic sheet, thereby adjusting the conveying position of the plastic sheet, so that the two plastic sheets are respectively matched with the subsequent corresponding slitting position, stamping and forming position and cutting position; the first correction drive component 322 and the second correction drive component 324 can make local adjustment and overall adjustment according to the position deviation detected by the correction sensor 31, which can improve the adjustment accuracy of the transverse position of the plastic sheet and expand the position adjustment range, so that the unwinding and feeding mechanism 2 can adapt to the station layout of the subsequent processing mechanism, and improve the position accuracy of the two plastic sheets when entering the stamping and forming mechanism 5 and cutting mechanism 6.

[0026] like Figure 7 and Figure 8As shown, the stamping mechanism 5 further includes a forming support frame 51, an upper die assembly 52, a lower die assembly 53, an upper die drive assembly 54, and a lower die drive assembly 55. The upper die assembly 52 and the lower die assembly 53 are arranged vertically opposite each other on the forming support frame 51. Two plastic sheets pass through the upper die assembly 52 and the lower die assembly 53. The upper die assembly 52 includes an upper die base 521 and two sets of die punches 522 disposed on the upper die base 521. The two sets of die punches 522 are spaced apart along the width direction of the plastic sheets. The lower die assembly 53 includes a lower die core 531, which has two sets of forming grooves 532 corresponding to the two sets of die punches 522. The upper die drive assembly 54 is connected to the upper die assembly 52, and the lower die drive assembly 55 is connected to the lower die assembly 53. The upper die drive assembly 54 and the lower die drive assembly 55 are respectively used to drive the upper die assembly 52 and the lower die assembly 53 to move synchronously towards each other, so that the two sets of die punches 522 respectively cooperate with the corresponding forming grooves 532 and simultaneously stamp the two plastic sheets. After the two plastic sheets move to the predetermined forming position, the upper mold drive assembly 54 drives the upper mold assembly 52 to move downward, and the lower mold drive assembly 55 drives the lower mold assembly 53 to move upward. This causes the two sets of mold punches 522 on the upper mold base 521 to approach the two sets of forming grooves 532 on the lower mold core 531, and the two plastic sheets are simultaneously pressed under the cooperation of the mold punches 522 and the corresponding forming grooves 532 to form two plastic packaging shells at the same time. By moving the upper mold assembly 52 and the lower mold assembly 53 in opposite directions at the same time, the required travel of the mold on one side can be shortened, and the forces on both sides can cooperate from the vertical direction of the plastic sheets, which is beneficial to improving the mold closing speed and forming stability.

[0027] like Figure 5 and Figure 6As shown, the slitting mechanism 4 further includes a slitting support frame 41, a slitting pressure plate 42, a floating plate 43, a floating lifting cylinder 44, a slitting moving assembly 45, and a slitting blade 46. The slitting support frame 41 is mounted on the frame 1, the slitting pressure plate 42 is positioned above the slitting support frame 41, and the floating plate 43 is positioned below the slitting pressure plate 42. A material passage gap 47 is formed between the slitting pressure plate 42 and the floating plate 43 for the plastic sheet to pass through. The floating lifting cylinder 44 is positioned below the floating plate 43 and connected to the floating plate 43. The lifting cylinder 44 is used to drive the floating plate 43 to move closer to or away from the slitting pressure plate 42 to adjust the material passage gap 47. The slitting pressure plate 42 is provided with a slitting groove 421 extending along the conveying direction of the plastic sheet. The slitting groove 421 is located between two sets of mold punches 522. The slitting blade 46 is connected to the slitting moving assembly 45 and extends into the material passage gap 47. The slitting moving assembly 45 is used to drive the slitting blade 46 to move along the extending direction of the slitting groove 421 to slit the plastic sheet located in the material passage gap 47 into two independent plastic sheets. In this embodiment, after the plastic sheet enters the slitting mechanism 4, it passes through the material passage gap 47 formed between the slitting pressure plate 42 and the floating plate 43. The floating lifting cylinder 44 drives the floating plate 43 to move closer to the slitting pressure plate 42, so that the floating plate 43 supports the plastic sheet flat from below. The material passage gap 47 is adjusted according to the thickness of the plastic sheet to prevent the plastic sheet from sagging or wrinkling during the slitting process if the material passage gap 47 is too large, and also to prevent the material passage gap 47 from being too small and hindering the normal conveying of the plastic sheet. When it is necessary to insert or change the material, the floating lifting cylinder 44 can drive the floating plate 43 away from the slitting pressure plate 42, thereby increasing the material passage gap 47 to facilitate the smooth passage of the plastic sheet. Slitting moving assembly 45 can drive the slitting blade 46, which extends into the material passage gap 47, to move along the extension direction of the slitting groove 421, so that the slitting blade 46 continuously slits the plastic sheet along the conveying direction of the plastic sheet, so as to stably divide the plastic sheet into two independent plastic sheets; at the same time, the position of the slitting groove 421 in the width direction of the plastic sheet is located between the corresponding areas of the two sets of die punches 522, so that the two plastic sheets formed by slitting can enter the stamping forming areas corresponding to the two sets of die punches 522 respectively, thereby ensuring that the positions of the two plastic sheets and the two sets of die punches 522 correspond to each other, which facilitates the subsequent synchronous stamping forming of two plastic packaging shells, thereby improving the slitting stability of the product and the subsequent stamping forming accuracy.

[0028] like Figure 9As shown, the cutting mechanism 6 further includes a cutting support frame 61, a cutting lifting seat 62, a cutting blade 63, a cutting base 64, a support positioning plate 65, a cutting lifting cylinder 66, and a cutting guide assembly 67. The cutting blade 63 is mounted on the cutting lifting seat 62 and extends along the width direction of the plastic sheet. The cutting lifting seat 62 can be raised and lowered on the cutting support frame 61 via the cutting guide assembly 67. The cutting base 64 is located below the cutting blade 63. The cutting lifting cylinder 66 is connected to the cutting lifting seat 62 and is used to drive the cutting blade 63 closer to the cutting base. 64. The cutting blade 63 cuts two plastic sheets. The supporting positioning plate 65 is located on the discharge side of the cutting mechanism 6. The supporting positioning plate 65 is provided with two contour positioning grooves 651 spaced apart along the width direction of the plastic sheet. The contour positioning grooves 651 are used to accommodate plastic packaging shells and limit the two plastic packaging shells when the cutting mechanism 6 cuts two plastic sheets. The cutting base 64 is provided with a sliding groove 68 and a waste box 69 below it. The sliding groove 68 extends inclined toward the waste box 69 and is used to guide the debris generated during cutting into the waste box 69. After the two plastic sheets are pulled to the predetermined cutting position by the feeding mechanism 7, the two plastic packaging shells respectively enter the two contour positioning grooves 651 on the support positioning plate 65. The contour positioning grooves 651 accommodate and limit the plastic packaging shells, keeping them relatively stable during the cutting process and preventing them from moving laterally when the plastic sheets are subjected to cutting force. Subsequently, the cutting lifting cylinder 66 can drive the cutting blade 63 to approach the cutting base 64. The cutting blade 63 spans the two plastic sheets and cuts the two plastic sheets in one descending motion. The cutting mechanism separates the two plastic packaging shells from their respective plastic sheets. After cutting, the two plastic packaging shells remain in their corresponding contour positioning grooves 651, allowing the unloading robot 8 to pick them up. The debris generated during the cutting process falls below the cutting base 64 and is transported to the waste box 69 via the inclined sliding chute 68 for centralized collection. This reduces the accumulation of debris inside the cutting mechanism 6, which could affect the normal operation of the cutting blade 63 and the cutting lifting seat 62, effectively improving the cutting stability of the plastic sheet and the picking accuracy of the subsequent unloading robot 8.

[0029] like Figure 10As shown, the material pulling mechanism 7 further includes a movable material pulling frame 71, a slide rail assembly 72, a material pulling drive assembly 73, and multiple sets of clamping assemblies 74. Two sets of slide rail assemblies 72 are arranged parallel to each other on both sides of the frame 1. The movable material pulling frame 71 is movably mounted on the frame 1 via the slide rail assembly 72. The material pulling drive assembly 73 is connected to the movable material pulling frame 71 and is used to drive the movable material pulling frame 71 to reciprocate along the conveying direction of the plastic sheet. Multiple sets of clamping assemblies 74 are spaced apart on the movable material pulling frame 71 along the width direction of the plastic sheet and are used to clamp or release the ends of the plastic sheet. The clamping assembly 74 is used to release two plastic sheets after cutting and to re-clamp the uncut ends of the plastic sheet after the two plastic packaging shells separated by the cutting are taken away by the unloading robot 8. During the feeding process, multiple sets of clamping components 74 clamp the ends of two plastic sheets at intervals along the width direction of the plastic sheet, so that the two plastic sheets can be subjected to force at multiple clamping positions. The moving feeding frame 71 pulls them forward synchronously for a predetermined stroke, so that the two plastic sheets enter the stamping mechanism 5 and the cutting mechanism 6 in sequence according to the same processing pitch, avoiding uneven force on the two plastic sheets and resulting in different conveying distances. After the cutting mechanism 6 cuts and separates the two plastic packaging shells from the two plastic sheets, the clamping components 74 release the clamps, so that the two cut plastic packaging shells can be picked up by the unloading robot 8. Then the moving feeding frame 71 resets, and the multiple sets of clamping components 74 re-clamp the uncut ends of the two plastic sheets. The feeding drive component 73 drives the two plastic sheets to continue moving forward, thus forming a cyclic action, realizing the synchronous intermittent conveying of the two plastic sheets, and improving the processing cycle connection accuracy between the stamping, cutting and unloading processes.

[0030] like Figure 11 and Figure 12As shown, the unloading robot 8 further includes a gantry support frame 81, a transverse base 82, a transverse drive assembly 83, lifting cylinders 84, a spacing adjustment assembly 85, and two suction assemblies 86. The gantry support frame 81 is mounted on the frame 1. The transverse base 82 is slidably mounted on the bottom of the gantry support frame 81. The transverse drive assembly 83 is connected to the transverse base 82 to drive the transverse base 82 to move between the cutting mechanism 6 and the unloading conveyor belt 10. The two lifting cylinders 84 are positioned along the width direction of the plastic sheet. The two adsorption components 86 are spaced apart and connected to the spacing adjustment component 85. The lifting cylinder 84 is connected to the adsorption component 86 to drive the adsorption component 86 to move vertically. The spacing adjustment component 85 is used to drive the two lifting cylinders 84 to move closer or further apart to adjust the distance between the two adsorption components 86. Each adsorption component 86 includes an adsorption plate 861 and a plurality of vacuum suction cups 862. The plurality of vacuum suction cups 862 are spaced apart on the adsorption plate 861 and are used to adsorb the corresponding plastic packaging shell. After the cutting mechanism 6 completes the cutting, the spacing adjustment component 85 can drive the two lifting cylinders 84 to move closer or further apart according to the spacing between the two plastic packaging shells on the support positioning plate 65, so that the two adsorption components 86 correspond to the two plastic packaging shells vertically. The two lifting cylinders 84 then drive the two adsorption components 86 to move downward, so that the multiple vacuum suction cups 862 on the adsorption plate 861 contact the corresponding plastic packaging shells and perform multi-point adsorption. After the plastic packaging shells are adsorbed, the lifting cylinders 84 drive the adsorption components 86 to rise, so that the plastic packaging shells are removed from the contour positioning groove 651. The transverse drive component 83 then drives the transverse seat 82 to move to the material area. The lifting cylinders 84 drive the adsorption components 86 to fall and release the vacuum adsorption, so that the two plastic packaging shells are unloaded.

[0031] like Figure 1 As shown, further, a transfer conveyor belt 9 is also included. The transfer conveyor belt 9 is located between the frame 1 and the unloading conveyor belt 10. The transfer conveyor belt 9 is used to receive the plastic packaging shells adsorbed and transferred by the unloading robot 8 and to transport the plastic packaging shells to the unloading conveyor belt 10. By setting the transfer conveyor belt 9 between the frame 1 and the unloading conveyor belt 10, the transfer conveyor belt 9 can connect the unloading position of the unloading robot 8 and the feeding position of the unloading conveyor belt 10. After the unloading robot 8 transfers the two cut and separated plastic packaging shells from the cutting mechanism 6 to the transfer conveyor belt 9, the transfer conveyor belt 9 can receive the plastic packaging shells and then transport the plastic packaging shells to the unloading conveyor belt 10 in a predetermined direction, so that the plastic packaging shells smoothly transition from the forming and cutting area to the detection and coding area.

[0032] like Figure 13 and Figure 14As shown, the detection and coding device 11 further includes a feeding guide assembly 111, a transfer mechanism 112, a transfer cylinder 113, a CCD detection assembly 114, a pushing mechanism 115, a defective product box 116, and a coding mechanism 117. The transfer mechanism 112 includes two transfer plates 1121 arranged relatively apart, with a product carrying area 1122 for placing the plastic packaging shell formed between the two transfer plates 1121. The feeding guide assembly 111 is disposed on the unloading conveyor belt 10 and is used to guide the plastic packaging shell to the product carrying area 1122. The transfer mechanism 112 is movably disposed between the unloading conveyor belt 10 and the CCD detection assembly 114. The transfer cylinder 113 is connected to the transfer mechanism 112 and is used to drive the transfer mechanism 112 to reciprocate between a conveying position on the unloading conveyor belt 10 and a detection position below the CCD detection assembly 114. The CCD detection component 114 is used to detect defects in the plastic packaging shells located at the detection position. The material transfer mechanism 112 is used to send the qualified plastic packaging shells back to the original conveying position of the unloading conveyor belt 10. The pushing mechanism 115 includes a pushing cylinder 1151, a pushing guide component 1152, and a rejection pushing component 1153. The rejection pushing component 1153 is slidably disposed on one side of the product carrying area 1122 through the pushing guide component 1152. The pushing cylinder 1151 is connected to the rejection pushing component 1153 and is used to drive the rejection pushing component 1153 to move towards the defective product box 116, so as to push the unqualified plastic packaging shells located in the product carrying area 1122 to the defective product box 116. The coding mechanism 117 is disposed at the discharge end of the unloading conveyor belt 10 and is used to code the qualified plastic packaging shells that have been returned to the unloading conveyor belt 10.In this embodiment, by providing a feeding guide assembly 111 on the feeding conveyor belt 10, the plastic packaging shell moving with the feeding conveyor belt 10 can be guided, allowing the plastic packaging shell to accurately enter the product carrying area 1122 formed between the two transfer plates 1121. After the plastic packaging shell enters the product carrying area 1122, the transfer cylinder 113 drives the transfer mechanism 112 to move from the conveying position on the feeding conveyor belt 10 to the detection position below the CCD detection component 114, and receives image acquisition from the CCD detection component 114. When the CCD detection component 114 determines that the plastic packaging shell is qualified, the transfer cylinder 113 can drive the transfer mechanism 112 to return to the conveying position, so that the plastic packaging shell returns to the original conveying position of the feeding conveyor belt 10 and moves with the feeding conveyor belt 10. The device continues to move to the coding mechanism 117, where the coding mechanism 117 codes the qualified plastic packaging shells. When the CCD detection component 114 determines that the plastic packaging shell is unqualified, the pusher cylinder 1151 drives the rejection pusher 1153 to move along the pusher guide component 1152 toward the defective product box 116. This causes the rejection pusher 1153 to push the unqualified plastic packaging shell located in the product carrying area 1122 out of the transfer mechanism 112 and into the defective product box 116, thereby preventing the unqualified plastic packaging shell from returning to the feeding conveyor belt 10 and entering the coding process. This setup can effectively realize the fixed-point detection of plastic packaging shells, the return of qualified products for coding, and the automatic rejection of unqualified products, improving the accuracy of product defect detection and reducing the inflow of unqualified products into the market, which affects product quality.

[0033] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic forming, cutting, and coding equipment for plastic packaging shells, characterized in that: It includes a frame, unwinding and feeding mechanism, correction mechanism, slitting mechanism, stamping and forming mechanism, cutting mechanism, pulling mechanism, unloading robot, unloading conveyor belt and detection and coding device; The unwinding and feeding mechanism is located at the bottom of the frame and is used to support the plastic sheet roll. The unwinding and feeding mechanism, the slitting mechanism, the stamping and forming mechanism, and the cutting mechanism are sequentially arranged on the frame along the conveying direction of the plastic sheet; The cutting mechanism is used to cut the plastic sheet into two independent plastic sheets along the longitudinal direction. The correction mechanism includes a correction sensor and a position adjustment component, wherein the correction sensor is disposed between the cutting mechanism and the stamping mechanism; The position adjustment component is connected to the unwinding and feeding mechanism to drive the unwinding and feeding mechanism to move along the width direction of the plastic sheet according to the position deviation detected by the correction sensor. The stamping mechanism is used to simultaneously stamp two plastic sheets to form two plastic packaging shells; The cutting mechanism is located at the discharge end of the stamping and forming mechanism to cut and separate the two plastic packaging shells from the corresponding plastic sheets respectively. The material pulling mechanism is located on one side of the cutting mechanism, and the material pulling mechanism is used to drive the two plastic sheets to move intermittently along the conveying direction; The unloading robot is located above the cutting mechanism. The unloading robot is used to absorb and transfer the cut and separated plastic packaging shells onto the unloading conveyor belt. The detection and coding device is located on the unloading conveyor belt to detect defects in the plastic packaging shells and to code the qualified plastic packaging shells.

2. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 1, characterized in that: The unwinding and feeding mechanism includes an unwinding base, an unwinding bracket, an unwinding shaft, an unwinding drive assembly, and multiple sets of redirecting rollers; The unwinding bracket is movably disposed on the unwinding base along the width direction of the plastic sheet, the unwinding shaft is rotatably disposed on the unwinding bracket and used to mount the plastic sheet roll, the unwinding drive assembly is disposed on the unwinding bracket and connected to the unwinding shaft, and the unwinding drive assembly is used to drive the unwinding shaft to rotate to realize unwinding; Multiple sets of redirecting rollers are spaced apart on the unwinding base along the conveying direction of the plastic sheet. The plastic sheet is sequentially wound around the multiple sets of redirecting rollers and conveyed to the slitting mechanism via the redirecting rollers.

3. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 2, characterized in that: The position adjustment component includes a first lateral guide component, a first correction drive component, a second lateral guide component, and a second correction drive component; The unwinding bracket is movably mounted on the unwinding base via the first transverse guide assembly. The first correction drive assembly is connected to the unwinding bracket and is used to drive the unwinding bracket to move along the width direction of the plastic sheet. The unwinding base is movably mounted on the frame via the second transverse guide assembly. The second correction drive assembly is connected to the unwinding base and is used to drive the unwinding feeding mechanism to move along the width direction of the plastic sheet. The first and second correction drive components are used to adjust the lateral position of the plastic sheet according to the position deviation detected by the correction sensor.

4. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 1, characterized in that: The stamping forming mechanism includes a forming support frame, an upper die assembly, a lower die assembly, an upper die drive assembly, and a lower die drive assembly; The upper mold assembly and the lower mold assembly are disposed opposite each other on the molding support frame, and the two plastic sheets pass through the upper mold assembly and the lower mold assembly; The upper mold assembly includes an upper mold base and two sets of mold punches disposed on the upper mold base, the two sets of mold punches being spaced apart along the width direction of the plastic sheet; The lower mold assembly includes a lower mold core, and the lower mold core is provided with two sets of forming grooves that correspond one-to-one with the two sets of mold punches; The upper mold drive assembly is connected to the upper mold assembly, and the lower mold drive assembly is connected to the lower mold assembly. The upper mold drive assembly and the lower mold drive assembly are respectively used to drive the upper mold assembly and the lower mold assembly to move synchronously towards each other, so that the two sets of mold punches respectively cooperate with the corresponding forming grooves and simultaneously stamp the two plastic sheets.

5. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 4, characterized in that: The slitting mechanism includes a slitting support frame, a slitting pressure plate, a floating plate, a floating lifting cylinder, a slitting moving assembly, and a slitting blade; The slitting support frame is mounted on the machine frame, the slitting pressure plate is located above the slitting support frame, the floating plate is located below the slitting pressure plate, and a material passage gap is formed between the slitting pressure plate and the floating plate for the plastic sheet to pass through. The floating lifting cylinder is located below the floating plate and connected to the floating plate. The floating lifting cylinder is used to drive the floating plate closer to or further away from the cutting plate to adjust the material passage gap. The slitting platen is provided with a slitting groove extending along the conveying direction of the plastic sheet. The slitting groove is located between two sets of die punches. The slitting blade is connected to the slitting moving assembly and extends into the material passage gap. The slitting moving assembly is used to drive the slitting blade to move along the extension direction of the slitting groove so as to slit the plastic sheet located in the material passage gap into two independent plastic sheets.

6. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 1, characterized in that: The cutting mechanism includes a cutting support frame, a cutting lifting seat, a cutting blade, a cutting base, a support and positioning plate, a cutting lifting cylinder, and a cutting guide assembly; The cutting blade is mounted on the cutting lifting seat and extends along the width direction of the plastic sheet. The cutting lifting seat can be raised and lowered on the cutting support frame via the cutting guide assembly. The cutting base is located below the cutting blade. The cutting lifting cylinder is connected to the cutting lifting base and is used to drive the cutting blade to approach the cutting base so as to cut two pieces of the plastic sheet by the cutting blade; The support positioning plate is located on the discharge side of the cutting mechanism. The support positioning plate is provided with two contour positioning grooves spaced apart along the width direction of the plastic sheet. The contour positioning grooves are used to accommodate the plastic packaging shells so as to limit the two plastic packaging shells when the cutting mechanism cuts two plastic sheets. The cutting base is provided with a material slide and a waste box below it. The material slide extends at an incline toward the waste box and is used to guide the debris generated during cutting into the waste box.

7. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 1, characterized in that: The material pulling mechanism includes a movable material pulling frame, a slide rail assembly, a material pulling drive assembly, and multiple sets of clamping assemblies; Two sets of slide rail assemblies are arranged parallel to each other on both sides of the frame. The movable material pulling frame is movably mounted on the frame via the slide rail assemblies. The material pulling drive assembly is connected to the movable material pulling frame and is used to drive the movable material pulling frame to reciprocate along the conveying direction of the plastic sheet. Multiple sets of the clamping assemblies are spaced apart on the movable pulling frame along the width direction of the plastic sheet, and are used to clamp or release the ends of the plastic sheet; The clamping assembly is used to release the two plastic sheets after cutting and to re-clamp the uncut ends of the plastic sheets after the two plastic packaging shells separated by the cutting are taken away by the unloading robot.

8. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 1, characterized in that: The unloading robot includes a gantry support frame, a transverse base, a transverse drive assembly, a lifting cylinder, a spacing adjustment assembly, and two adsorption assemblies; The gantry support frame is mounted on the machine frame, the transverse shift seat is slidably mounted on the bottom of the gantry support frame, and the transverse shift drive assembly is connected to the transverse shift seat to drive the transverse shift seat to move between the cutting mechanism and the unloading conveyor belt; The two lifting cylinders are spaced apart along the width direction of the plastic sheet and are respectively connected to the spacing adjustment component. The lifting cylinders are connected to the adsorption component to drive the adsorption component to move up and down in the vertical direction. The spacing adjustment component is used to drive the two lifting cylinders to move closer or further apart, so as to adjust the distance between the two adsorption components; Each of the adsorption components includes an adsorption plate and multiple vacuum suction cups, which are spaced apart on the adsorption plate and used to adsorb the corresponding plastic packaging shell.

9. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 1, characterized in that: It also includes a transfer conveyor belt, which is located between the frame and the unloading conveyor belt. The transfer conveyor belt is used to receive the plastic packaging shells adsorbed and transferred by the unloading robot and transport the plastic packaging shells to the unloading conveyor belt.

10. The automatic forming, cutting, and coding equipment for plastic packaging shells according to claim 1, characterized in that: The detection and coding device includes a feeding guide assembly, a material transfer mechanism, a material transfer cylinder, a CCD detection assembly, a material pusher, a defective product box, and a coding mechanism; The material transfer mechanism includes two material transfer plates arranged at a distance from each other, and a product carrying area for placing the plastic packaging shell is formed between the two material transfer plates; The feeding guide assembly is disposed on the unloading conveyor belt and is used to guide the plastic packaging shell to the product carrying area; The material transfer mechanism is movably disposed between the unloading conveyor belt and the CCD detection component. The material transfer cylinder is connected to the material transfer mechanism and is used to drive the material transfer mechanism to reciprocate between the conveying position located on the unloading conveyor belt and the detection position located below the CCD detection component. The CCD detection component is used to detect defects in the plastic packaging shell located at the detection position, and the material transfer mechanism is used to send the qualified plastic packaging shell back to the original conveying position of the unloading conveyor belt. The pushing mechanism includes a pushing cylinder, a pushing guide assembly, and a rejection pushing component. The rejection pushing component is slidably disposed on one side of the product carrying area via the pushing guide assembly. The pushing cylinder is connected to the rejection pushing component and is used to drive the rejection pushing component to move toward the defective product box, so as to push the plastic packaging shells that are located in the product carrying area and fail the inspection to the defective product box. The coding mechanism is located at the discharge end of the unloading conveyor belt and is used to code the plastic packaging shells that have passed inspection and are returned to the unloading conveyor belt.

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