Aluminum plastic packaging machine with secondary rejection function

Abstract

This invention discloses an aluminum-plastic packaging machine with a secondary rejection function, belonging to the field of packaging equipment technology. Specifically, it includes a main body and a frame. The main body is an existing machine, and the frame has a conveyor belt connected to the output end of the main body. Protective railings are provided on both sides of the conveyor belt, and a rejection channel is opened above the conveyor belt, penetrating through the protective railings on both sides. It also includes a pushing component, a detection component, a collection box, a collection component, and a positioning conveyor component. This invention constructs a fully automatic secondary rejection system that is completely compatible with the original aluminum-plastic packaging machine. It can receive rejection signals and alarm signals from the main body in real time. When the main body's single rejection is incomplete, triggering an alarm, the system automatically starts the secondary rejection program. Through the detection of the medicine plate arrival by photoelectric sensor one, the continuous rejection action of the pushing component, and the automatic collection by the positioning conveyor component, the fully automatic removal of residual unqualified medicine plates is completed.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, and in particular to an aluminum-plastic packaging machine with a secondary rejection function. Background Technology

[0002] Aluminum-plastic packaging machines are automated packaging equipment whose core function is to encapsulate products in blister packs composed of plastic film and aluminum foil (PTP aluminum foil), completing an integrated process from forming, filling, heat sealing to die cutting. They are widely used in industries such as pharmaceuticals, food, and electronics.

[0003] A search revealed Chinese patent publication number CN216332983U, which discloses an aluminum-plastic packaging machine. The machine includes a packaging film feeding roller, a buffer mechanism, a feeding mechanism, a sealing mechanism, a cutting mechanism, and a traction component. The packaging film strip is wound around the feeding roller. A heating component heats the packaging film strip, and a forming component forms bubble pockets on the packaging film strip. The buffer mechanism straightens the packaging film strip between the feeding roller and the forming mechanism. The feeding mechanism places the packaged item into the corresponding bubble pocket. The sealing mechanism adheres aluminum foil strip to the side of the packaging film strip with the bubble pockets to seal the packaged item. The cutting mechanism cuts the adhered aluminum foil strip and packaging film strip to a preset length to form the finished product. The traction component pulls the packaging film strip sequentially through the buffer mechanism, forming mechanism, feeding mechanism, sealing mechanism, and cutting mechanism.

[0004] The aforementioned patent has the following shortcomings: The device can achieve high packaging efficiency and ensure the yield rate of finished products through the cooperation of the feeding roller, traction component, buffer mechanism, forming mechanism, unloading mechanism, packaging mechanism and cutting mechanism. However, defective products will still exist during production. The device does not have a secondary rejection mechanism, which leads to problems such as low equipment operating efficiency, high risk of defective products flowing out, high safety risks of manual sampling and high labor intensity of personnel. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an aluminum-plastic packaging machine with a secondary rejection function.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An aluminum-plastic packaging machine with a secondary rejection function includes a main body and a frame. The frame is equipped with a conveyor belt connected to the output end of the main body. Protective railings are provided on both sides of the conveyor belt, and a rejection channel is provided above the conveyor belt, penetrating through the protective railings on both sides. The machine also includes: A pusher assembly is configured on the frame, with its pushing end located at one end of the rejection channel. The pusher assembly is used to push the medicine plate on the conveyor belt out along the extension direction of the rejection channel. A detection component, configured on the frame and located on one side of the feeding component, is used to detect whether the blister packs being conveyed by the conveyor belt have reached the rejection channel position. A collection box is attached to the rack and located at the other end of the rejection channel; A collection component is located at the end of the rejection channel away from the pusher component, and is used to receive the blister packs pushed out of the rejection channel by the pusher component; A positioning and conveying component is disposed on the collection box, and the collection component is assembled on the positioning and conveying component. The positioning and conveying component is used to drive the collection component to move longitudinally and laterally along the collection box.

[0007] Preferably, the feeding assembly includes a telescopic cylinder and a U-shaped pusher plate; the telescopic cylinder is mounted on the frame, the pusher plate is connected to the movable end of the telescopic cylinder, and the structure of the pusher plate is adapted to the shape of the blister pack.

[0008] Furthermore: the detection component is located on the side of the feeding component near the input end of the conveyor belt, and the detection component includes a detection platform, a mounting angle plate, and a photoelectric sensor; wherein, the detection platform is fixedly connected to the frame, the mounting angle plate is mounted on the detection platform, the photoelectric sensor is detachably connected to the mounting angle plate, and the sensing end of the photoelectric sensor faces the surface of the conveyor belt.

[0009] Based on the aforementioned scheme: the inside of the collection box is divided into a sampling chamber and a rejection chamber by a partition plate. The side of the sampling chamber and the rejection chamber away from the partition plate are connected to the outside of the collection box. The sampling box and the rejection box are slidably connected inside the sampling chamber and the rejection chamber, respectively. The sampling box and the rejection box are provided with several placement compartments inside. The sampling box and the rejection box are detachably connected to the collection box by a snap-fit ​​assembly.

[0010] A preferred embodiment of the aforementioned solution is that the buckle assembly includes a movable box, a fixed box, a pin block, a pressing plate, and a telescopic spring. The sampling box and the rejection box are each equipped with a movable box on one side outside the collection box. A fixed box is installed above each of the two movable boxes and is fixedly connected to the outer wall of the collection box. The pin is inserted through the top wall of the movable box and is slidably connected to the movable box. The fixed box has a through-hole fixing groove on the side near the movable box, which is suitable for the movable engagement of the pin end. The telescopic spring is connected between the end of the pin inside the movable box and the bottom wall of the movable box. The pressing plate is inserted through the top wall of the fixed box and is slidably connected to the fixed box. The end of the pressing plate inside the fixed box is in movable contact with the end of the pin.

[0011] As a further embodiment of the present invention: the buckle assembly further includes an abutment spring, an elastic plate, and a guide rod; wherein, the elastic plate is slidably connected in the fixing groove, and the sliding direction of the elastic plate is perpendicular to the sliding direction of the pin block; the guide rod passes through the elastic plate and is arranged along the sliding direction of the elastic plate, and is fixedly connected in the fixing box; the abutment spring is sleeved on the outside of the guide rod, and both ends of the abutment spring are respectively connected to the elastic plate and the inner wall of the fixing box.

[0012] Meanwhile, the collecting assembly includes a U-shaped receiving plate, a lower support plate, and a flipping assembly; wherein, the receiving plate is located at the end of the rejection channel away from the pushing assembly, the lower support plate is located at the bottom of the receiving plate, and one side is hinged to the side wall of the receiving plate through a hinge structure, the hinge structure includes a hinge shaft and a fixed base, the hinge base is fixedly connected to one side of the lower support plate, and the hinge base is rotatably connected to the fixed base through the hinge shaft, and the flipping assembly is used to drive the lower support plate to rotate around the axis of the hinge shaft.

[0013] As a preferred embodiment of the present invention: the flipping assembly includes a driving gear, a driven gear, and a flipping motor; wherein, the flipping motor is mounted on a receiving plate via a motor mounting plate, the driving gear is coaxially connected to the output end of the flipping motor, the driven gear is coaxially connected to a hinge shaft, and the driven gear meshes with the driving gear.

[0014] Meanwhile, the positioning and conveying assembly includes linear guide rails, linear sliders, support plates, gantry plates, a second motor mounting plate, a first lead screw, a transmission assembly, and a lifting assembly. Two linear guide rails are provided, symmetrically connected to both sides of the collection box. Linear sliders are slidably connected to both linear guide rails. A threaded block is connected to each linear slider via a right-angle plate. A first lead screw is located below each of the two linear guide rails. The first lead screw is rotatably connected to the outer wall of the collection box via a shaft bracket, and the threaded block is threaded onto the first lead screw. The support plate is connected to the linear slider. The gantry plate is connected to the support plate. The second motor mounting plate is fixedly connected to the gantry plate. A second photoelectric sensor is connected to the bottom of the gantry plate at a position corresponding to the receiving plate.

[0015] As a preferred embodiment of the present invention: the transmission assembly includes a driving bevel gear, a driven bevel gear, a transmission rod, a transmission gear, and a transmission motor; wherein, the ends of the two lead screws are coaxially connected to the driving bevel gear, the transmission rod is rotatably connected to the collection box via a rotating bearing, both ends of the transmission rod are coaxially connected to the driven bevel gear, the driving bevel gear meshes with the driven bevel gear, the transmission gear is coaxially connected to one of the lead screws, the transmission motor is mounted on the collection box via a motor mounting plate, and the output end of the transmission motor is connected to a driving gear, which meshes with the transmission gear; The lifting assembly includes a lifting motor, a second lead screw, a second threaded block, and a lifting frame; wherein, the lifting motor is mounted on a motor mounting plate, the second lead screw is arranged longitudinally along the collection box and rotatably connected to the lifting frame, the second threaded block is threadedly connected to the second lead screw, and the second threaded block is fixedly connected to the receiving plate by a fixed bracket, and the output end of the lifting motor is connected to the end of the second lead screw. A guide bracket is provided at the bottom of the gantry plate along the extension direction of the second lead screw. A longitudinal rod is fixedly connected to the guide bracket along its extension direction. A guide block is connected to the outer wall of the receiving plate, and the guide block is slidably connected to the longitudinal rod.

[0016] The beneficial effects of this invention are as follows: 1. This invention constructs a fully automatic secondary rejection system that is completely compatible with the original aluminum-plastic packaging machine. Through signal interface between the PLC controller and the main controller on the main body of the equipment, it can receive rejection signals and alarm signals from the main body of the equipment in real time. When the main body of the equipment fails to completely reject the product in a single operation and triggers the alarm, the system automatically starts the secondary rejection program. Through the detection of the medicine plate arrival by photoelectric sensor 1, the continuous rejection action of the pushing component, and the automatic material collection by the positioning conveying component, the system completes the fully automatic removal of residual unqualified medicine plates. At the same time, the entire secondary rejection process does not require equipment shutdown or manual intervention, and the continuous operation time of the equipment is greatly extended.

[0017] 2. The collection box in this invention is divided into independent rejection chambers and sampling chambers by partitions. With the multiple independent placement compartments in the rejection box, non-conforming products can be stored independently in a single compartment according to the flow order of the blister packs, avoiding confusion between different batches of blister packs. The close-range material placement design can ensure the packaging integrity of non-conforming blister packs, which is convenient for subsequent quality re-inspection and production traceability, and significantly improves the quality control level of the entire process of drug packaging production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar structure of an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention; Figure 2 This is a partial three-dimensional schematic diagram of an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention; Figure 3 This invention proposes an aluminum-plastic packaging machine with a secondary rejection function. Figure 2 A top-down view; Figure 4 This invention proposes an aluminum-plastic packaging machine with a secondary rejection function. Figure 2 Schematic diagram of the middle section Figure 1 ; Figure 5 This invention proposes an aluminum-plastic packaging machine with a secondary rejection function. Figure 2 Schematic diagram of the middle section Figure 2 ; Figure 6 This is a schematic diagram of the transmission component of an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention. Figure 7 This is a partial cross-sectional view of the buckle assembly of an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention. Figure 8 This is a three-dimensional schematic diagram of the buckle assembly of an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention. Figure 9 This is a front view of the receiving plate of an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention; Figure 10 This is a schematic diagram of the receiving plate and lifting assembly structure of an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention. Figure 11 This is a schematic diagram of the hinge structure in an aluminum-plastic packaging machine with a secondary rejection function proposed in this invention.

[0019] In the diagram: 1. Main body of the equipment; 2. Frame; 3. Conveyor belt; 4. Guardrail; 5. Rejection channel; 6. Pushing assembly; 7. Detection assembly; 8. Collection box; 9. Push plate; 10. Telescopic cylinder; 11. Detection platform; 12. Mounting angle plate; 13. Photoelectric sensor one; 14. Partition plate; 15. Sampling chamber; 16. Rejection chamber; 17. Sampling box; 18. Rejection box; 19. Placement bin; 20. Movable box; 21. Fixed box; 22. Pin block; 23. Pressing plate; 24. Telescopic spring; 25. Fixing groove; 26. Abutment spring; 27. Elastic plate; 28. Guide rod; 29. ​​Support plate; 30. Lower support plate; 31. Hinge shaft; 32. Hinge base; 33. 34. Fixed base; 35. Driven gear; 36. Driven gear; 37. Tilting motor; 38. Linear guide rail; 39. Linear slider; 40. Support plate; 41. Gantry plate; 42. Motor mounting plate II; 43. Lead screw I; 44. Threaded block I; 45. Right angle plate; 46. Photoelectric sensor II; 47. Driven bevel gear; 48. Transmission rod; 49. Transmission gear; 50. Lifting motor; 51. Transmission motor; 52. Motor mounting plate I; 53. Lead screw II; 54. Threaded block II; 55. Lifting frame; 56. Fixed bracket; 57. Guide bracket; 58. Guide block; 59. Drive gear; 60. Motor mounting plate III; 61. Longitudinal rod. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] An aluminum-plastic packaging machine with a secondary rejection function, such as Figures 1-11 As shown, the device includes a main body 1 and a frame 2. The main body 1 is an existing device. The frame 2 is equipped with a conveyor belt 3 connected to the output end of the main body 1. Both sides of the conveyor belt 3 are equipped with guardrails 4. A rejection channel 5 is opened above the conveyor belt 3 and through the guardrails 4 on both sides. The device also includes a pushing component 6, a detection component 7, a collection box 8, a collection component, and a positioning conveying component. When the main body of the equipment 1 is in normal production, the monitoring device installed on the main body of the equipment 1 detects the quality of the medicine blister packs in real time. When a defective medicine blister pack is detected, the PLC controller triggers the single rejection actuator to perform a single rejection action. At the same time, it sends a rejection signal to the PLC controller through the three-channel rejection signal output terminal. After receiving the rejection signal through the port, the PLC controller immediately latches the rejection signal through the internal auxiliary relay M0 to keep the signal state from being lost. If the single rejection action is successful, the defective medicine blister pack is removed by the original rejection mechanism. When the subsequent medicine blister packs flow through the photoelectric sensor 13, if no defective medicine blister pack matching the latched signal is detected, the PLC controller automatically clears the latched signal, and the equipment continues to operate normally and continuously. If the single rejection is incomplete and the unqualified blister packs are not removed, they will flow into the subsequent process with the conveyor belt 3. The main controller of the main body of the equipment will trigger an alarm signal and transmit the alarm signal to the connection port of the PLC controller. After receiving the alarm signal, the PLC controller will immediately determine that the single rejection has failed and automatically start the secondary rejection program. At the same time, it will send an alarm prompt to the operation panel. The operator only needs to press the equipment reset button. There is no need to stop the machine or manually handle the unqualified blister packs. Specifically, the pushing assembly 6 is configured on the frame 2, with its pushing end located at one end of the rejection channel 5. The pushing assembly 6 is used to push the medicine plates on the conveyor belt 3 out along the extension direction of the rejection channel 5. The detection assembly 7 is configured on the frame 2 and located on one side of the pushing assembly 6. It is used to detect whether the medicine plates conveyed by the conveyor belt 3 have reached the position of the rejection channel 5. The collection box 8 is connected to the frame 2 and located at the other end of the rejection channel 5. The collection assembly is located at the end of the rejection channel 5 away from the pushing assembly 6. It is used to receive the medicine plates pushed out of the rejection channel 5 by the pushing assembly 6. The positioning conveying assembly is set on the collection box 8. The collection assembly is mounted on the positioning conveying assembly. The positioning conveying assembly is used to drive the collection assembly to move longitudinally and laterally along the collection box 8.

[0023] The feeding assembly 6 includes a telescopic cylinder 10 and a U-shaped pusher plate 9; the telescopic cylinder 10 is mounted on the frame 2, and the pusher plate 9 is connected to the movable end of the telescopic cylinder 10. The structure of the pusher plate 9 is adapted to the shape of the medicine plate, that is, the pusher end of the pusher plate 9 is aligned with the rejection channel 5, and its telescopic stroke is matched with the width of the conveyor belt 3. The feeding assembly 6 also includes an SMCVT307 series pneumatic solenoid valve. After the secondary rejection process is started, the remaining unqualified medicine blister packs continue to flow with the conveyor belt 3. When the photoelectric sensor 13 detects that the medicine blister pack has reached the corresponding position of the rejection channel 5, it immediately sends a position trigger signal to the PLC controller. After receiving the signal, the PLC controller outputs a control signal to the pneumatic actuator solenoid valve through the output port. The solenoid valve reverses its direction and controls the telescopic cylinder 10 to complete the reciprocating action of extending and retracting. When the telescopic cylinder 10 extends, it drives the push plate 9 to move towards the rejection channel 5. The U-shaped inner contour of the push plate 9 fits the side of the medicine blister pack, and pushes the medicine blister pack out smoothly along the rejection channel 5, avoiding the problems of the medicine blister pack being deviated, folded, or stuck during the pushing process. When the telescopic cylinder 10 retracts, it drives the push plate 9 to reset, waiting for the arrival signal of the next medicine blister pack.

[0024] The detection component 7 is located on the side of the feeding component 6 near the input end of the conveyor belt 3. The detection component 7 includes a detection platform 11, a mounting angle plate 12, and a photoelectric sensor 13. The detection platform 11 is fixedly connected to the frame 2, the mounting angle plate 12 is mounted on the detection platform 11, and the photoelectric sensor 13 is detachably connected to the mounting angle plate 12. The sensing end of the photoelectric sensor 13 faces the surface of the conveyor belt 3. The signal output end of the photoelectric sensor is electrically connected to the input end of the programmable logic controller, and the power supply end is connected to a 24V DC power supply mounted on the frame 2. It is used to accurately detect the arrival signal of the unqualified medicine plate and transmit it to the programmable logic controller in real time. This device also includes a PLC controller, a signal conversion unit, and a power control unit. In this embodiment, the PLC controller is electrically connected to an interactive operation panel. The PLC controller is a Mitsubishi FX2N-32MR model. The signal conversion unit includes four Omron MY2N-J series 24V intermediate relays. The power control unit includes one power control switch, which is used to control the power supply of the electrical equipment in this device. Specifically, the input terminal of the signal conversion unit is electrically connected to the rejection signal output terminal and the on-machine alarm output terminal of the single rejection actuator of the main controller, respectively. The output terminal of the signal conversion unit is electrically connected to the signal input terminal of the programmable logic controller. The three-channel rejection signal output terminal of the main controller is electrically connected to the corresponding input port of the programmable logic controller via three intermediate relays. The on-machine alarm output terminal of the main controller is electrically connected to the input port of the programmable logic controller via one intermediate relay. One end of the coil of the intermediate relay is connected to the positive terminal of the 24V power supply, and the other end is connected to the signal output terminal of the original equipment. The normally open contact of the intermediate relay is connected to the corresponding input port of the PLC. The intermediate relays achieve electrical isolation between the original equipment and the newly added PLC controller system, avoid signal interference, and ensure the stability of signal matching. The inside of the collection box 8 is divided into a sampling chamber 15 and a rejection chamber 16 by a partition plate 14. The side of the sampling chamber 15 and the rejection chamber 16 away from the partition plate 14 is connected to the outside of the collection box 8. The sampling box 17 and the rejection box 18 are slidably connected inside the sampling chamber 15 and the rejection chamber 16, respectively. The sampling box 17 and the rejection box 18 are each provided with several placement compartments 19. The sampling box 17 and the rejection box 18 are detachably connected to the collection box 8 by a snap-fit ​​assembly. Each placement compartment 19 of the rejection box 18 can hold the medicine plates that have been rejected in different time periods, and each placement compartment 19 of the sampling box 17 can hold the medicine plates that have been sampled in different time periods, so as to realize the purpose of storing medicine plates in the order of circulation and avoiding the confusion of samples from different batches.

[0025] The buckle assembly includes a movable box 20, a fixed box 21, a pin block 22, a pressing plate 23, and a telescopic spring 24; The sampling box 17 and the rejection box 18 are each equipped with a movable box 20 on one side outside the collection box 8. A fixed box 21 is set above each of the two movable boxes 20 and is fixedly connected to the outer wall of the collection box 8. A pin 22 is inserted through the top wall of the movable box 20 and is slidably connected to the movable box 20. A fixed groove 25 is opened on the side of the fixed box 21 near the movable box 20, which is suitable for the movable engagement of the end of the pin 22. A telescopic spring 24 is connected between the end of the pin 22 inside the movable box 20 and the bottom wall of the movable box 20. A pressing plate 23 is inserted through the top wall of the fixed box 21 and is slidably connected to the fixed box 21. The end of the pressing plate 23 inside the fixed box 21 is in movable contact with the end of the pin 22. After the rejection box 18 or the sampling box 17 is pushed into the corresponding rejection cavity 16 or sample cavity, the end of the pin 22 on the movable box 20 is engaged in the fixed groove 25 of the fixed box 21.

[0026] The snap-fit ​​assembly also includes an abutment spring 26, a spring plate 27, and a guide rod 28. The spring plate 27 is slidably connected within the fixing groove 25, and the sliding direction of the spring plate 27 is perpendicular to the sliding direction of the pin 22. The guide rod 28 passes through the spring plate 27, is positioned along the sliding direction of the spring plate 27, and is fixedly connected within the fixing box 21. The abutment spring 26 is sleeved on the outside of the guide rod 28, and both ends of the abutment spring 26 are connected to the spring plate 27 and the inner wall of the fixing box 21, respectively. During the process of the pin 22 snapping into the fixing groove 25, the pin 22 pushes the spring plate 27 to move, thereby compressing the abutment spring 26. Under the reverse force of the abutment spring 26, the pin 22 is pushed to lock into the fixing groove 25. When the pressing plate 23 is pressed, the pressing plate 23 contacts the end of the pin 22 and presses the pin 22 to disengage from the fixing groove 25. At the same time as the pin 22 disengages from the fixing groove 25, the abutting spring 26 loses external pressure, releases elastic force, and pushes the elastic plate 27 to push the pin 22. In turn, the pin 22 pushes the movable box 20 to move, thereby causing the corresponding rejection box 18 or sampling box 17 to be disengaged from the collection box 8 by a certain distance, making it easier for workers to remove the rejection box 18 or sampling box 17. The design of this buckle assembly realizes one-click unlocking, automatic pop-out, and push-in self-locking of the box body. No additional tools are required, the operation is convenient, and the locking state is stable, which meets the standard requirements for rapid replacement and cleaning in the pharmaceutical production process.

[0027] The collecting assembly includes a U-shaped receiving plate 29, a lower support plate 30, and a flipping assembly. The receiving plate 29 is located at the end of the rejection channel 5 away from the pushing assembly 6. The lower support plate 30 is located at the bottom of the receiving plate 29, and one side is hinged to the side wall of the receiving plate 29 through a hinge structure. The hinge structure includes a hinge base 32 and a fixed base 33. The hinge base 32 is fixedly connected to one side of the lower support plate 30, and the hinge base 32 is rotatably connected to the fixed base 33 through a hinge shaft 31. The flipping assembly is used to drive the lower support plate 30 to rotate around the axis of the hinge shaft 31.

[0028] The flipping assembly includes a drive gear 34, a driven gear 35, and a flipping motor 36. The flipping motor 36 is mounted on the receiving plate 29 via a motor mounting plate 52. The drive gear 34 is coaxially connected to the output end of the flipping motor 36, and the driven gear 35 is coaxially connected to the hinge shaft 31. The driven gear 35 meshes with the drive gear 34. When the receiving plate 29 receives the medicine plate pushed by the pushing assembly 6, the lower support plate 30 receives the medicine plate. When the flipping assembly is used, the flipping motor 36 drives the drive gear 34 to rotate, which in turn drives the driven gear 35 to rotate. Through the hinge shaft 31, the hinge shaft 32 and the lower support plate 30 rotate on the fixed base 33, and the medicine plate on the lower support plate 30 falls down.

[0029] The positioning and conveying assembly includes linear guide rails 37, linear sliders 38, support plates 39, gantry plates 40, motor mounting plate 2 41, lead screws 42, transmission components, and lifting components. Two linear guide rails 37 are provided, symmetrically connected to both sides of the collection box 8. Linear sliders 38 are slidably connected to both linear guide rails 37. Threaded blocks 43 are connected to the linear sliders 38 via right-angle plates 44. Lead screws 42 are installed below both linear guide rails 37, rotatably connected to the outer wall of the collection box 8 via shaft brackets, and threaded blocks 43 are threadedly connected to the lead screws 42. Support plates 39 are connected to the linear sliders 38, and gantry plates 40 are connected to the support plates 39. Motor mounting plate 2 41 is fixedly connected to the gantry plates 40. For easy receiving of the plate... 29 moves longitudinally. A photoelectric sensor 25 is connected at the bottom of the gantry plate 40, corresponding to the receiving plate 29, to detect the number of medicine blister packs received inside the receiving plate 29. The photoelectric sensor 25 is electrically connected to the PLC controller. After the medicine blister pack is pushed out of the rejection channel 5, it falls directly into the receiving plate 29 of the collecting assembly. At this time, the lower support plate 30 is in a horizontally closed state, completely receiving the medicine blister pack. The inner wall of the receiving plate 29 forms a secondary limit on the medicine blister pack, preventing it from popping out and falling. At the same time, the photoelectric sensor 25 at the bottom of the gantry plate 40 detects that a medicine blister pack has been received in the receiving plate 29 and immediately sends a counting signal to the PLC controller. The counter inside the PLC controller accumulates the number of rejection actions. The count is incremented by 1 for each medicine blister pack that is rejected. Under the action of the positioning and conveying component, the receiving plate 29 containing the medicine blister pack is moved above the sampling box 17 or the rejection box 18, and then precisely moved above the placement chamber 19 inside the sampling box 17 or the rejection box 18. Then, using the lifting component, the receiving plate 29 is moved down to approach the corresponding placement chamber 19. Under the control of the PLC controller, the lower support plate 30 is opened, so that the medicine blister pack in the receiving plate 29 falls into the corresponding placement chamber 19.

[0030] The transmission assembly includes a driving bevel gear 46, a driven bevel gear 47, a transmission rod 48, a transmission gear 49, and a transmission motor 51. The ends of both lead screws 42 are coaxially connected to the driving bevel gear 46. The transmission rod 48 is rotatably connected to the collection box 8 via a rotating bearing. Both ends of the transmission rod 48 are coaxially connected to the driven bevel gear 47. The driving bevel gear 46 meshes with the driven bevel gear 47. The transmission gear 49 is coaxially connected to one of the lead screws 42. The transmission motor 51 is mounted on the collection box 8 via a motor mounting plate 60. The output end of the transmission motor 51 is connected to a drive gear 59, which meshes with the transmission gear 49. The lifting assembly includes a lifting motor 50, a second lead screw 53, a second threaded block 54, and a lifting frame 55. The lifting motor 50 is mounted on a motor mounting plate 52. The second lead screw 53 is arranged longitudinally along the collection box 8 and is rotatably connected to the lifting frame 55. The second threaded block 54 is threadedly connected to the second lead screw 53 and is fixedly connected to the receiving plate 29 through a fixed bracket 56. The output end of the lifting motor 50 is connected to the end of the second lead screw 53. A guide bracket 57 is arranged at the bottom of the gantry plate 40 along the extension direction of the second lead screw 53. A longitudinal rod 61 is fixedly connected to the guide bracket 57 along its extension direction. A guide block 58 is connected to the outer wall of the receiving plate 29 and is slidably connected to the longitudinal rod 61. After receiving the counting signal, the PLC controller immediately controls the positioning and conveying assembly to start. The drive motor 51 starts, driving the drive gear 59 to rotate. Through the meshing drive gear 49, one of the lead screws 42 rotates. The lead screw 42 drives the driven bevel gear 47 to rotate through the driving bevel gear 46 at its end. In turn, through the drive rod 48, it drives the other lead screw 42 to rotate synchronously in the same direction, realizing synchronous transmission of the two lead screws. When the two lead screws 42 rotate synchronously, they drive the threaded block 43 to move horizontally along the axis of the lead screw 42. In turn, through the linear slider 38 and the support plate 39, the gantry plate 40 moves horizontally along the linear guide rail 37 until the receiving plate 29 is precisely moved above the rejection chamber 16 of the collection box 8. During this process, the dual-screw synchronous transmission structure ensures that the movement of both sides of the gantry plate 40 is completely synchronized, avoiding problems such as unilateral offset and jamming. This ensures that the receiving plate 29 can be accurately aligned with the empty placement bin 19 of the rejection box 18 below, solving the problems of uneven load and inaccurate positioning that are prone to occur with single-screw transmission. After the lateral positioning is completed, the lifting motor 50 starts, driving the second screw 53 to rotate, driving the second threaded block 54 to move vertically downward along the second screw 53, thereby driving the receiving plate 29 to move vertically downward along the longitudinal rod 61 until the bottom of the receiving plate 29 is close to the top of the corresponding empty placement bin 19 in the rejection box 18, at which point the lifting action stops. During this process, the cooperation structure between the longitudinal rod 61 and the guide block 58 restricts the circumferential displacement of the receiving plate 29, ensuring a smooth lifting process throughout and preventing the medicine plates in the receiving plate 29 from shaking and falling. At the same time, the close-range material feeding design prevents the medicine plates from falling from a height and causing folding or packaging damage, ensuring the integrity of the unqualified medicine plates and facilitating subsequent re-inspection and quality analysis. After the lifting and lowering mechanism reaches its designated position, the PLC controller sends a control signal to the tilting motor 36. The tilting motor 36 starts, driving the drive gear 34 to rotate. Through the meshing driven gear 35, it drives the hinge shaft 31 to rotate, which in turn drives the hinge shaft 32 and the lower support plate 30 to rotate downwards by 90° around the hinge shaft 31. The bottom of the receiving plate 29 is fully opened, and the medicine blister pack falls smoothly into the empty storage compartment 19 below under the action of gravity, completing the secondary rejection and classification storage of a single unqualified medicine blister pack. After unloading, the tilting motor 36 rotates in reverse, driving the lower support plate 30 to return to the horizontal closed state; the lifting motor 50 starts in reverse, driving the receiving plate 29 to rise and return to the initial height; the transmission motor 51 rotates in reverse, driving the gantry plate 40 to return to the corresponding position of the rejection channel 5, waiting for the arrival signal of the next medicine blister pack. After the PLC controller's internal counter accumulates a preset 9 rejections, it determines that all remaining defective medicine boards have been removed. It then automatically resets the rejection signal latched by the auxiliary relay, clears the alarm signal, resets the counter and timer to zero, and the system returns to normal production. During this process, the 9 consecutive rejection actions completely cover all defective medicine boards that may remain after a single incomplete rejection, achieving complete removal of defective medicine boards and eliminating the quality risk of defective products flowing into subsequent processes. At the same time, the entire secondary rejection process does not require equipment shutdown or manual intervention, significantly extending the continuous operating time of the equipment.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An aluminum-plastic packaging machine with a secondary rejection function, comprising a main body (1) and a frame (2), wherein the frame (2) is provided with a conveyor belt (3) connected to the output end of the main body (1), both sides of the conveyor belt (3) are provided with guardrails (4), and a rejection channel (5) is provided above the conveyor belt (3) and through the guardrails (4) on both sides, characterized in that, Also includes: The pusher assembly (6) is configured on the frame (2), with its pushing end located at one end of the rejection channel (5). The pusher assembly (6) is used to push the medicine plate on the conveyor belt (3) out along the extension direction of the rejection channel (5). The detection component (7), configured on the frame (2) and located on one side of the pusher component (6), is used to detect whether the medicine plate conveyed by the conveyor belt (3) has reached the rejection channel (5). The collection box (8) is connected to the frame (2) and located at the other end of the rejection channel (5); A collection component is located at one end of the rejection channel (5) away from the pusher component (6) and is used to receive the blister pack pushed out of the rejection channel (5) by the pusher component (6); A positioning and conveying component is disposed on the collection box (8). The collection component is mounted on the positioning and conveying component. The positioning and conveying component is used to drive the collection component to move longitudinally and laterally along the collection box (8).

2. The aluminum-plastic packaging machine with secondary rejection function according to claim 1, characterized in that, The feeding assembly (6) includes a telescopic cylinder (10) and a U-shaped pusher plate (9); the telescopic cylinder (10) is mounted on the frame (2), and the pusher plate (9) is connected to the movable end of the telescopic cylinder (10). The structure of the pusher plate (9) is adapted to the shape of the medicine plate.

3. The aluminum-plastic packaging machine with secondary rejection function according to claim 1, characterized in that, The detection component (7) is located on the side of the pusher component (6) near the input end of the conveyor belt (3). The detection component (7) includes a detection platform (11), a mounting angle plate (12), and a photoelectric sensor (13). The detection platform (11) is fixedly connected to the frame (2), the mounting angle plate (12) is mounted on the detection platform (11), and the photoelectric sensor (13) is detachably connected to the mounting angle plate (12), with the sensing end of the photoelectric sensor (13) facing the surface of the conveyor belt (3).

4. The aluminum-plastic packaging machine with secondary rejection function according to claim 1, characterized in that, The inside of the collection box (8) is divided into a sampling chamber (15) and a rejection chamber (16) by a partition plate (14). The side of the sampling chamber (15) and the rejection chamber (16) away from the partition plate (14) are connected to the outside of the collection box (8). The sampling chamber (15) and the rejection chamber (16) are respectively slidably connected to a sampling box (17) and a rejection box (18). The sampling box (17) and the rejection box (18) are each provided with several placement compartments (19). The sampling box (17) and the rejection box (18) are detachably connected to the collection box (8) by a snap-fit ​​assembly.

5. An aluminum-plastic packaging machine with a secondary rejection function according to claim 4, characterized in that, The buckle assembly includes a movable box (20), a fixed box (21), a pin block (22), a pressing plate (23), and a telescopic spring (24); The sampling box (17) and the rejection box (18) are each equipped with a movable box (20) on one side outside the collection box (8). A fixed box (21) is provided above each of the two movable boxes (20), and the fixed box (21) is fixedly connected to the outer wall of the collection box (8). The pin (22) passes through the top wall of the movable box (20), and the pin (22) is slidably connected to the movable box (20). The fixed box (21) is located on the side close to the movable box (20). A fixing groove (25) is provided through which the pin (22) is movably engaged with the end of the pin (22). The end of the pin (22) located inside the movable box (20) is connected to the telescopic spring (24) between the bottom wall of the movable box (20). The pressing plate (23) is installed on the top wall of the fixed box (21) and is slidably connected to the fixed box (21). The end of the pressing plate (23) located inside the fixed box (21) is in movable contact with the end of the pin (22).

6. The aluminum-plastic packaging machine with secondary rejection function according to claim 5, characterized in that, The buckle assembly also includes an abutment spring (26), an elastic plate (27), and a guide rod (28); wherein the elastic plate (27) is slidably connected in the fixing groove (25), and the sliding direction of the elastic plate (27) is perpendicular to the sliding direction of the pin block (22); the guide rod (28) passes through the elastic plate (27), is set along the sliding direction of the elastic plate (27), and is fixedly connected in the fixing box (21); the abutment spring (26) is sleeved on the outside of the guide rod (28), and the two ends of the abutment spring (26) are respectively connected to the elastic plate (27) and the inner wall of the fixing box (21).

7. An aluminum-plastic packaging machine with a secondary rejection function according to claim 1, characterized in that, The collecting assembly includes a U-shaped receiving plate (29), a lower support plate (30), and a flipping assembly; wherein the receiving plate (29) is located at one end of the rejection channel (5) away from the pushing assembly (6), the lower support plate (30) is located at the bottom of the receiving plate (29), and one side is hinged to the side wall of the receiving plate (29) through a hinge structure, the hinge structure includes a hinge base (32) and a fixed base (33), the hinge shaft (32) is fixedly connected to one side of the lower support plate (30), the hinge base (32) is rotatably connected to the fixed base (33) through the hinge shaft (31), and the flipping assembly is used to drive the lower support plate (30) to rotate around the axis of the hinge shaft (31).

8. An aluminum-plastic packaging machine with a secondary rejection function according to claim 7, characterized in that, The flipping assembly includes a drive gear (34), a driven gear (35), and a flipping motor (36); wherein the flipping motor (36) is mounted on the receiving plate (29) via a motor mounting plate (52), the drive gear (34) is coaxially connected to the output end of the flipping motor (36), the driven gear (35) is coaxially connected to the hinge shaft (31), and the driven gear (35) meshes with the drive gear (34).

9. An aluminum-plastic packaging machine with a secondary rejection function according to claim 8, characterized in that, The positioning and conveying assembly includes linear guide rails (37), linear sliders (38), support plates (39), gantry plates (40), motor mounting plates (41), lead screws (42), transmission components, and lifting components; wherein, there are two linear guide rails (37), which are symmetrically connected to both sides of the collection box (8), and the linear sliders (38) are slidably connected to both linear guide rails (37). The linear sliders (38) are connected to threaded blocks (43) through right-angle plates (44). 37) The first lead screw (42) is provided below each of the above. The first lead screw (42) is rotatably connected to the outer wall of the collection box (8) through the shaft frame. The first threaded block (43) is threadedly connected to the first lead screw (42). The linear slider (38) is connected to the support plate (39). The gantry plate (40) is connected to the support plate (39). The second motor mounting plate (41) is fixedly connected to the gantry plate (40). The bottom of the gantry plate (40) is connected to the corresponding position of the receiving plate (29) with the second photoelectric sensor (45).

10. An aluminum-plastic packaging machine with a secondary rejection function according to claim 9, characterized in that, The transmission assembly includes a driving bevel gear (46), a driven bevel gear (47), a transmission rod (48), a transmission gear (49), and a transmission motor (51); wherein, the ends of the two lead screws (42) are coaxially connected to the driving bevel gear (46), the transmission rod (48) is rotatably connected to the collection box (8) through a rotating bearing, both ends of the transmission rod (48) are coaxially connected to the driven bevel gear (47), the driving bevel gear (46) meshes with the driven bevel gear (47), the transmission gear (49) is coaxially connected to one of the lead screws (42), the transmission motor (51) is mounted on the collection box (8) through a motor mounting plate (60), the output end of the transmission motor (51) is connected to a driving gear (59), and the driving gear (59) meshes with the transmission gear (49); The lifting assembly includes a lifting motor (50), a lead screw (53), a threaded block (54), and a lifting frame (55); wherein the lifting motor (50) is mounted on a motor mounting plate (52), the lead screw (53) is arranged longitudinally along the collection box (8) and rotatably connected to the lifting frame (55), the threaded block (54) is threadedly connected to the lead screw (53), and the threaded block (54) is fixedly connected to the receiving plate (29) by a fixed bracket (56), and the output end of the lifting motor (50) is connected to the end of the lead screw (53); The bottom of the gantry plate (40) is provided with a guide bracket (57) along the extension direction of the second screw (53). A longitudinal rod (61) is fixedly connected to the guide bracket (57) along its extension direction. A guide block (58) is connected to the outer wall of the receiving plate (29), and the guide block (58) is slidably connected to the longitudinal rod (61).

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