Automatic medicine plate discharging mechanism

Abstract

The utility model provides an automatic medicine plate discharging mechanism. The side wall of the blanking bin is defined by four movable panels and a base, and a hollowed-out groove is formed in the side wall of the blanking bin; the upstream conveying device is used for conveying medicine plates to the blanking bin; the automatic discharging device is used for putting the medicine plates into a guide groove of the downstream conveying device from the discharging bin; and the first photoelectric sensor is mounted on the outer side of the discharging bin and is used for detecting the positions and the number of the medicine plates in the discharging bin through a hollow-out groove of the discharging bin. According to the automatic discharging mechanism, a transparent wall plate is arranged on a hollowed-out groove of a discharging bin, medicine plates are guided to enter the discharging bin from an upstream conveying device and are stacked on the automatic discharging device in order, and therefore the risk that the medicine plates are stuck in the discharging bin and shut down can be reduced, the medicine plates can be effectively isolated from a first photoelectric sensor, and the automatic discharging mechanism is high in practicability. And the risk that the sensitivity of the first photoelectric sensor is reduced and the control fails due to the fact that dust generated in the medicine plate discharging process covers the first photoelectric sensor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automatic feeding technology in packaging machines, and in particular to an automatic feeding mechanism for medicine blister packs. Background Technology

[0002] Pillow packaging machines are continuous packaging machines with high packaging capacity, suitable for various sizes of pharmaceuticals. The blister packing mechanism, controlled by a sensor, is a crucial component of the pillow packaging machine. High-precision sensors detect the position and quantity of the blister packs, thereby controlling the timing and quantity of blister pack feeding.

[0003] Existing technology CN207312417U discloses an adjustable automatic blister pack feeding device. This device uses a blister pack detection sensor installed on the side wall of the hopper to detect the lower limit of the blister pack capacity, thereby adjusting the feeding speed of the upper station to ensure a continuous supply of blister packs. Therefore, pillow-type packaging machines, based on photoelectric sensing, typically use a perforated groove in the middle of the hopper to ensure sensor sensitivity. However, due to the presence of this annular perforated groove, blister packs often get stuck, causing the feeding mechanism to stop. This results in blister packs becoming obstructed on the upstream conveyor of the automatic feeding device, leading to a lack of material supply and interrupting the entire packaging production line. Consequently, the smoothness of the blister pack packaging line is low, failing to meet the rapidly developing blister pack packaging industry and the automation needs of modern consumers. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides an automatic dispensing mechanism for medicine blister packs that can both ensure that the detection sensor effectively monitors the lower limit of the blister pack capacity in the silo and prevent upstream blister pack blockage and downstream supply failure due to blister pack jamming in the silo.

[0005] The automatic blister pack feeding mechanism of this utility model mainly includes: a feeding bin formed by four movable panels and a base, with a hollowed-out groove in the side wall; an upstream conveying device for conveying blister packs to the feeding bin; an automatic feeding device for feeding blister packs from the feeding bin into the guide groove of the downstream conveying device; and a first photoelectric sensor installed on the outside of the feeding bin to detect the position and quantity of blister packs in the feeding bin through the hollowed-out groove. A transparent wall panel is installed on the hollowed-out groove of the feeding bin to guide the blister packs from the upstream conveying device into the feeding bin and neatly stack them on the automatic feeding device.

[0006] In some embodiments of this utility model, the movable panel opposite the feeding bin and the upstream conveying device is further provided with a U-shaped hollow groove, which is configured to be used to move or remove the medicine plate in the feeding bin.

[0007] In some embodiments of this utility model, the automatic feeding device includes the pair of rotary blade units, two small shafts, and a belt compensation device. The belt compensation device drives the two small shafts to rotate, thereby causing the pair of rotary blade units to rotate. The automatic feeding device can be used to change different sizes of blister packs by adjusting the width of the rotary blades.

[0008] In some embodiments of this invention, the automatic blister pack feeding mechanism is equipped with a flow guide hood at the end of the upstream conveying device, which is far from the feeding hopper. The flow guide hood cooperates with the upstream conveying device to form a channel. This provides a unidirectional channel for the blister packs to be conveyed from the conveying device in the clean area to the upstream conveying device located in the non-clean area.

[0009] In a preferred embodiment of this utility model, the channel is a variable diameter channel, and the longitudinal section of the channel is a right-angled trapezoidal structure. It slopes from high to low from the end of the upstream conveying device away from the unloading bin towards the upstream conveying device, so that the medicine plate can slide smoothly into the guide trough of the upstream conveying device.

[0010] In some embodiments of this utility model, the drainage hood mainly consists of a top cover, a drainage plate, and a clamping part. The top cover is clamped to the protective plates on both sides of the end of the upstream conveying device by the clamping part, thus fixing the drainage hood to the end of the upstream conveying device. The clamping part located on both sides of the upstream conveying device is provided with clamping grooves, which effectively fasten the top cover to both sides of the guide trough of the upstream conveying device. The clamping part inside the guide trough of the upstream conveying device is provided with a flange. The flange slopes from high to low from the end of the conveying device near the clean area towards the upstream conveying device in the non-clean area. The drainage plate is fixedly connected to the flange, thus forming an inclined channel with the top cover of the drainage hood. This channel is used to receive the medicine blister packs thrown out from the conveying device in the clean area and allows the medicine blister packs to automatically slide towards the upstream conveying device in the non-clean area. Under the action of the upstream conveying device, the medicine blister packs are automatically conveyed to the unloading hopper.

[0011] In some embodiments of this utility model, the automatic blister pack feeding mechanism is provided with a diversion chamber on the upstream conveying device. The diversion chamber mainly includes a servo blowing device and a receiving device. The servo blowing device is located on one side of the upstream conveying device and can intermittently or continuously generate airflow to blow the blister packs in the upstream conveying device according to the stop signal of the automatic feeding device or the position or quantity of blister packs in the feeding chamber detected by the first photoelectric sensor. The receiving device is located on the other side of the upstream conveying device opposite the servo blowing device and receives the blister packs blown by the servo blowing device.

[0012] In a preferred embodiment of this invention, the automatic blister pack feeding mechanism is further equipped with a second photoelectric sensor on the upstream conveying device. This second photoelectric sensor is configured to detect whether the blister pack has reached the purging area of ​​the diversion bin within the upstream conveying device. When the second photoelectric sensor detects that the blister pack has reached the purging area of ​​the diversion bin within the upstream conveying device, the second photoelectric sensor can instruct the servo blowing device to open the air valve to purge the blister pack located within the purging area via a relay or PLC controller. When no blister pack is detected in the purging area, the second photoelectric sensor can instruct the servo blowing device to close the air valve via a relay or PLC.

[0013] In a preferred embodiment of the present invention, a flexible protective member is provided inside the storage device, the flexible protective member being configured to reduce the impact force with the inner wall of the storage device when the medicine blister is stored in the storage device.

[0014] In a preferred embodiment of this utility model, the flexible protective component may be a flexible protective cover disposed within the storage device or a flexible layer disposed on the inner wall of the storage device.

[0015] In some embodiments of this utility model, the automatic blister pack feeding mechanism is provided with a backup replenishment bin at the junction of the downstream conveying device and the packaging machine feed inlet. The backup replenishment bin is configured to link with the automatic feeding device according to the number signal of blister packs in the feeding bin provided by the first photoelectric sensor, so as to continuously supply blister packs to the automatic packaging machine.

[0016] In a preferred embodiment of this invention, the backup feeding hopper device includes a manual feeding hopper, a servo feeder, and a third photoelectric sensor. The manual feeding hopper consists of a hopper for feeding the servo feeder and a U-shaped chute. The U-shaped chute automatically slides the blister packs into the hopper using their own weight. The third photoelectric sensor is also configured to detect whether there are blister packs in the guide groove of the downstream conveyor located below the manual feeding hopper, and to instruct the servo feeder or packaging machine to start or stop via a relay or PLC controller.

[0017] In a preferred embodiment of this utility model, the U-shaped chute and the hopper wall are an integral component.

[0018] In a preferred embodiment of this utility model, the automatic blister pack feeding mechanism is further provided with a PLC controller. The PLC controller controls the automatic feeding device, the backup replenishment bin, the diversion bin, and the packaging machine in a cascade manner through the signals provided by the first photoelectric sensor, the second photoelectric sensor, and the third photoelectric sensor, so as to continuously supply material to the automatic blister pack packaging machine and realize continuous and uniform material supply to the automatic blister pack packaging machine.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. The automatic feeding mechanism for medicine blister packs described in this utility model can reduce the risk of medicine blister packs getting stuck in the feeding bin and causing the machine to stop by installing a transparent wall panel on the hollow groove of the feeding bin. It can also effectively isolate the medicine blister packs from the first photoelectric sensor, reducing the risk of dust generated during the feeding process covering the first photoelectric sensor and causing its sensitivity to decrease and control failure.

[0021] 2. The automatic blister pack feeding mechanism of this utility model also features a flow guide hood designed at the end of the upstream conveying device, which is far from the feeding bin. The flow guide hood works in conjunction with the upstream conveying device to provide an inclined channel for blister packs to be conveyed unidirectionally from the clean area to the upstream conveying device located in the non-clean area. This not only makes the unidirectional conveying of blister packs from the clean area to the non-clean area smoother, but also effectively reduces the risk of cross-contamination.

[0022] 3. The automatic blister pack feeding mechanism of this utility model is provided with a diversion chamber on the upstream conveying device. The first photoelectric sensor generates airflow intermittently or continuously to blow the blister packs in the upstream conveying device based on the position signal of the blister packs. This allows the blister packs in the upstream conveying device to be blown and diverted to the receiving device. This not only effectively diverts excess blister packs in the upstream conveying device, but also effectively prevents blister packs from being stuck in the upstream conveying device due to abnormal shutdown of the automatic feeding device. This improves the smoothness of the blister pack operation between the upstream conveying device and the automatic blister pack feeding mechanism.

[0023] 4. The automatic blister pack feeding mechanism of this utility model is equipped with a backup replenishment bin on the downstream conveying device. The linkage between the automatic feeding device and the backup replenishment bin is controlled by the number signal of blister packs in the feeding bin provided by the first photoelectric sensor, so as to achieve continuous and uniform feeding of blister packs to the automatic packaging machine.

[0024] 5. This utility model utilizes a PLC controller to achieve cascaded control of components such as an automatic feeding device, a backup replenishment bin, a diversion bin, and a packaging machine through signals provided by the first, second, and third photoelectric sensors, thereby effectively improving the automation level of the automatic pharmaceutical blister pack production line. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the automatic blister pack feeding mechanism described in Embodiment 1 of this application;

[0026] Figure 2 This is a schematic front view of the feeding bin of the automatic blister pack feeding mechanism described in Embodiment 1 of this application;

[0027] Figure 3 This is a schematic rear view of the unloading bin of the automatic blister pack feeding mechanism described in Embodiment 1 of this application;

[0028] Figure 4 This is a schematic diagram of the automatic feeding device of the automatic blister pack feeding mechanism described in Embodiment 1 of this application;

[0029] Figure 5 is a schematic diagram of the drainage cover structure of the automatic blister pack feeding mechanism described in Embodiment 2 of this application, wherein... Figure 5a This is a schematic diagram of the transverse (perpendicular to the guide groove of the upstream conveying device) cross-section of the flow guide hood, which consists of a top cover and a flow guide plate. Figure 5b This is a schematic diagram of the longitudinal (parallel to the guide groove of the upstream conveying device) cross-sectional structure of the flow guide hood, which consists of a top cover and a flow guide plate. Figure 5c A schematic diagram of the transverse (perpendicular to the guide groove of the upstream conveying device) cross-section structure of the flow guide shroud, which has a clamping part and a flange. Figure 5d A schematic diagram of the longitudinal (parallel to the guide groove of the upstream conveying device) cross-section structure of the flow guide shroud with a clamping part and a flange;

[0030] Figure 6 This is a schematic diagram of the spare material replenishment bin device of the automatic blister pack feeding mechanism described in Embodiment 4 of this application;

[0031] Figure 7 This is a block diagram of the PCL controller control program for the automatic blister pack feeding mechanism described in Embodiment 5 of this application.

[0032] Figure 8 This is a schematic diagram of the working principle of the PCL controller for the automatic blister pack feeding mechanism described in Embodiment 5 of this application.

[0033] Illustration:

[0034] 1. Feeding bin, 11-Modible panel, 12-Base, 13-Hollowed groove, 14-Transparent wall panel, 15-U-shaped hollowed groove

[0035] 2. Upstream conveying device, 21-guide chute

[0036] 3. Downstream conveying device, 31-guide trough

[0037] 4. Automatic feeding device, 41-rotating blade unit, 42-slider, 43-small shaft, 44-belt compensation device

[0038] 5. First photoelectric sensor

[0039] 6. Drainage hood, 61-top cover, 62-drainage plate, 63-clamping part, 64-clamping groove, 65-flange, 66-channel

[0040] 7. Diversion chamber, 71-Servo blowing device, 72-Storage device, 73-Second photoelectric sensor

[0041] 8. Backup feeding hopper device, 81-manual feeding hopper, 811-hopper, 812-U-chute, 82-servo unloading machine, 83-third photoelectric sensor

[0042] 9. PCL controller Detailed Implementation

[0043] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0044] Example 1

[0045] Please see Figure 1-3 An automatic blister pack feeding mechanism includes: a feeding bin 1 formed by four movable panels 11 and a base 12 forming a hollow groove 13 on the side wall; an upstream conveying device 2 for conveying blister packs to the feeding bin 1; an automatic feeding device 4 for feeding blister packs from the feeding bin 1 into the guide groove 31 of the downstream conveying device 3; and a first photoelectric sensor 5 installed on the outside of the feeding bin 1 to detect the position and quantity of blister packs in the feeding bin 1 through the hollow groove 13. The mechanism also includes a transparent wall panel 14 on the hollow groove 13 of the feeding bin 1, which is configured to guide blister packs from the upstream conveying device 2 into the feeding bin 1 and neatly stack them on the automatic feeding device 4.

[0046] In this embodiment, by installing a transparent wall panel 14 on the perforated groove 13 of the feeding hopper 1, the automatic feeding device 4 is prevented from stopping when the medicine blister packs fall into the feeding hopper 1 and get stuck in the perforated groove 13. This also effectively isolates the medicine blister packs from the first photoelectric sensor 5, preventing dust generated during the feeding process from covering the first photoelectric sensor 5 and causing its sensitivity to decrease and control failure. At the end of each production run, simply cleaning the dust collection on the transparent wall panel 14 ensures that the sensing effect of the first photoelectric sensor 5 through the transparent wall panel 14 remains stable.

[0047] The first photoelectric sensor 5 of the automatic blister pack feeding mechanism can sense the presence or absence of blister packs through the transparent wall panel 14. When the number of blister packs in the lower hopper 1 decreases to a set low level, the automatic blister pack feeding mechanism can use a PLC to instruct the blister pack packaging mechanism in the clean area to increase the amount of blister packs being fed to the upstream conveying device 2 in the non-clean area based on the low level signal from the first photoelectric sensor 5, thereby replenishing blister packs in real time, efficiently, and intelligently. When blister packs are stuck in the lower hopper 1, the automatic blister pack feeding mechanism can instruct the blister pack packaging mechanism in the clean area to automatically stop supplying blister packs to the upstream conveying device 2 in the non-clean area based on the jam signal from the first photoelectric sensor 5, reducing the accumulation of blister packs in the upstream conveying device 2 in the non-clean area. The automatic blister pack feeding mechanism can also instruct the automatic feeding device 4 to stop based on the jam signal from the first photoelectric sensor 5.

[0048] In this embodiment, the automatic feeding device 4 is as follows: Figure 4 As shown, the device can consist of a pair of rotating vane units 41, a slider 42 that moves in conjunction with the movable panel 11 of the feeding bin 1, two small shafts 43, and a belt compensation device 44. The belt compensation device 44 drives the small shafts 43 of the rotating vane units 41 to rotate, thereby causing the rotating vane units 41 to rotate. When the medicine blister needs to fall, under the drive of the belt compensation device 44, when the pair of rotating vane units 41 rotates one revolution, a certain number of medicine blister placed in the pair of rotating vane units 41 are moved into the guide groove 31 of the downstream conveying device 3.

[0049] The movable panel 11 of the feeding bin 1, which is opposite to the upstream conveying device 2, is also provided with a U-shaped hollow groove 15. The U-shaped hollow groove 15 is configured to move or remove the medicine plate in the feeding bin 1, so as to facilitate the operator in handling the abnormal material jamming fault of the feeding bin 1.

[0050] Example 2

[0051] This embodiment provides an automatic blister pack feeding mechanism. As shown in the figure, its structure is roughly the same as that of embodiment 1. The difference is that the automatic blister pack feeding mechanism is provided with a flow guide hood 6 at the end of the upstream conveying device 2 away from the feeding bin 1. The flow guide hood 6 cooperates with the upstream conveying device 2 to provide a channel for the blister pack to be unidirectionally conveyed from the conveying device in the clean area to the upstream conveying device 2 located in the non-clean area.

[0052] Among them, such as Figure 5a and 5b As shown, the flow guide 6 is snapped onto the end slot of the guide trough 21 of the upstream conveying device 2. The channel is preferably an inclined channel, which is inclined from high to low from the end of the upstream conveying device 2 away from the unloading bin 1 towards the unloading bin 1, so that the medicine plate can slide smoothly into the guide trough 21 of the upstream conveying device 2.

[0053] The conveying device of the blister packing mechanism in the clean area is higher than the upstream conveying device 2 located in the non-clean area, so that the blister pack can be smoothly placed into the guide trough 21 of the upstream conveying device 2 along the channel provided by the guide hood 6 and the upstream conveying device 2 under the inertial action of the conveying device in the clean area, and automatically enter the unloading hopper 1 under the conveying of the upstream conveying device 2.

[0054] In this embodiment, a flow guide 6 is provided at the end of the upstream conveying device 2 located in the non-clean area. The inclined channel formed between the flow guide 67 and the upstream conveying device 2 is used to receive the medicine tablets thrown out from the conveyor belt in the clean area and to slide the medicine tablets into the guide trough 21 of the upstream conveying device 2 in the non-clean area. Under the action of the upstream conveying device 2, the medicine tablets are automatically conveyed to the unloading bin 1.

[0055] The specific structure is as follows: Figure 5a , 5b As shown, the drainage hood 6 in this embodiment is provided with a top cover 61, a drainage plate 62, and a clamping part 63. The clamping part 63 is fastened to the top cover 63 and clamped on the upstream conveying device 2, so that the drainage hood 6 is fixed on the upstream conveying device 2. The end of the drainage plate 62 near the clean area is connected to the top cover 61. The end of the drainage plate 62 away from the clean area extends downward in the direction of conveying the medicine plate towards the guide trough 21 of the upstream conveying device 2. The end of the drainage plate 62 away from the clean area is lower than the guide trough 21 of the upstream conveying device 2, thereby forming an inclined channel 66 so that the medicine plate in the clean area is automatically and unidirectionally conveyed to the guide trough 21 of the upstream conveying device 2, and then conveyed to the unloading bin 1 by the upstream conveying device 2, thereby completing the conveying of medicine plates from the clean area to the non-clean area. This not only avoids the risk of cross-contamination between the clean area and the non-clean area during the conveying of medicine plates, but also avoids the medicine plates from deviating in the guide trough 21 of the upstream conveying device 2 when transitioning from the clean area to the non-clean area.

[0056] in, Figure 5c , 5d The clamping part 63 of the drainage cover 6 is provided with a clamping groove 64, which can effectively clamp on the side wall of the guide trough 21 of the upstream conveying device 2. The clamping part 64 located on the inner side of the side wall of the guide trough 21 is provided with a flange 65. The flange 65 is inclined, and the drainage plate 62 is fixedly connected to the flange 65, thereby forming an inclined channel 66 with the top cover 61. The channel 66 is used to receive the medicine tablets thrown out from the clean area conveyor belt and make the medicine tablets automatically slide into the guide trough 21 of the upstream conveying device 2 in the non-clean area. Under the action of the upstream conveying device 2, the medicine tablets are automatically conveyed to the silo 1.

[0057] Example 3:

[0058] This embodiment provides an automatic blister pack feeding mechanism. Referring to FIG5, its structure is roughly the same as that of Embodiment 1, except that: the automatic blister pack feeding mechanism is provided with a diversion chamber 7 on the upstream conveying device 2. The diversion chamber 7 is configured to intermittently or continuously absorb blister packs in the upstream conveying device 2 according to the stop signal of the automatic feeding device 4 or the position or quantity of blister packs in the feeding chamber 1 detected by the first photoelectric sensor 5.

[0059] The diversion chamber 7 mainly includes a servo blowing device 71 and a receiving device 72. The servo blowing device 71 is located on one side of the upstream conveying device 2 and can intermittently or continuously generate airflow to blow the medicine plates in the upstream conveying device 2 according to the stop signal of the automatic feeding device 4 or the position or quantity of medicine plates in the feeding chamber 1 detected by the first photoelectric sensor 5. The receiving device 72 is located on the other side of the upstream conveying device 2 opposite to the servo blowing device 71 and receives the medicine plates blown by the servo blowing device 71.

[0060] The automatic blister pack feeding mechanism is equipped with a second photoelectric sensor 73 above the area of ​​the upstream conveyor device 2 being purged by the servo blowing device 71. The second photoelectric sensor 73 is configured to detect whether the blister pack has reached the purging area of ​​the diversion bin 7 within the upstream conveyor device 2. When the second photoelectric sensor 73 detects that the blister pack has reached the purging area of ​​the diversion bin 7 within the upstream conveyor device 2, the second photoelectric sensor 73 can instruct the servo blowing device 71 to open the air valve to purge the blister packs located within the purging area via a relay or PLC controller. When no blister pack is detected in the purging area, the second photoelectric sensor 73 can instruct the servo blowing device 71 to close the air valve via a relay or PLC.

[0061] In this embodiment, a flexible protective component is also provided inside the storage device 72. The flexible protective component is configured to reduce the impact force with the inner wall of the storage device 72 when the medicine blister is stored in the storage device 72, so as to avoid damage to the medicine blister due to strong impact force.

[0062] Example 4:

[0063] This embodiment provides an automatic blister pack feeding mechanism, referring to... Figure 1 and Figure 6 As shown, its structure is roughly the same as that of Embodiment 3, except that: a spare material replenishment bin device 8 is provided in the area of ​​the downstream conveying device 3 near the inlet of the packaging machine. The spare material replenishment bin device 8 is configured to be linked with the automatic feeding device 4 according to the number signal of the medicine plates in the feeding bin 1 provided by the first photoelectric sensor 5, so as to automatically and continuously feed the packaging machine.

[0064] The backup feeding bin device 8 includes a manual feeding bin 81, a servo feeder 82, and a third photoelectric sensor 83. The manual feeding bin 81 consists of a hopper 811 that supplies material to the servo feeder 82 and a U-shaped chute 812. The U-shaped chute 812 automatically slides the blister pack into the hopper 811 using its own weight. The third photoelectric sensor 83 is configured to detect whether there are blister packs in the guide groove 31 of the downstream conveyor 3 located below the manual feeding bin 81, and to instruct the servo feeder 82 or the packaging machine to start or stop via a relay or PLC controller.

[0065] The operator can manually fill the collected medicine plates in the storage device 72 into the manual feeding bin 91 of the spare feed bin device 9.

[0066] In this embodiment, a conveyor belt can be installed between the storage device 72 and the U-shaped chute 812 of the manual feeding bin 81 to automatically transport the medicine blister pack in the storage device 72 to the bin 811 via the U-shaped chute 812.

[0067] Example 5:

[0068] This embodiment provides an automatic blister pack feeding mechanism, referring to... Figure 7 , 8 As shown, its structure is roughly the same as that of Embodiment 4, except that: the automatic feeding mechanism of the blister pack is equipped with a PCL controller 9. The PCL controller 9 is configured to receive the cascaded control of the automatic feeding device 4, the diversion bin 7, the spare replenishment bin device 8, the upstream conveying device 2, and the downstream conveying device 3 from the first photoelectric sensor 5, the second photoelectric sensor 73, and the third photoelectric sensor 83, thereby achieving automated control of continuous feeding of the blister pack automatic packaging machine and effectively improving the automation level of the blister pack automatic production line.

[0069] The specific control principle of the PCL controller 9 is as follows: Figure 6 , 7 As shown:

[0070] The operator turns on the power to start PCL9, sets the blister packaging parameters and production instructions through the computer, and starts the upstream conveyor device 2 to transport the blister packs in the clean area to the unloading hopper 1 via the conveyor belt and the guide hood 6.

[0071] The first photoelectric sensor 5 detects the number of medicine tablets in the feeding bin 1 in real time via the transparent wall panel 14 on the hollow groove 13 of the feeding bin 1. When the number of medicine tablets in the bin reaches the threshold for activating the automatic feeding device 4, the first photoelectric sensor 5 sends a signal to the digital input module of the PCL controller 9. The digital input module of the PCL controller 9 converts the signal from the first photoelectric sensor 5 into a digital signal and sends it to the controller. The controller sends the digital signal "the number of medicine tablets in the bin reaches the threshold for activating the automatic feeding device 4" transmitted by the first photoelectric sensor 5 to the servo drive system to send start commands to the automatic feeding device motor controller and the downstream conveying device motor controller, respectively. After receiving the start command, the automatic feeding device motor controller and the downstream conveying device motor controller immediately start the automatic feeding device 4 and the downstream conveying device 3, so that the medicine tablets in the feeding bin 1 are automatically and quantitatively distributed into the guide groove 31 of the downstream conveying device 3, and automatically conveyed to the inlet of the packaging machine by the downstream conveying device 3.

[0072] When the third photoelectric sensor 83 detects that there is a medicine blister in the guide groove 31 of the downstream conveying device 3 of the backup replenishment bin device 8, it sends a signal to the PCL controller 9. The digital input module of the PCL controller 9 converts the "there is material in the guide groove 31 of the downstream conveying device 3" signal sent by the third photoelectric sensor 83 into a digital signal and sends it to the controller. The controller then sends a start command to the packaging machine motor controller. When the packaging machine motor controller receives the start command, it immediately starts the packaging machine to perform tasks such as boxing and sealing of the medicine blister.

[0073] When the first photoelectric sensor 5 detects that the medicine blister pack in the feeding bin 1 has not moved, the first photoelectric sensor 5 immediately sends a signal to the PCL controller 9. The analog input module converts the signal "the medicine blister pack in the feeding bin 1 has not moved" transmitted by the first photoelectric sensor 5 into a digital signal and sends it to the controller. The controller automatically determines "the medicine blister pack in the feeding bin 1 is stuck" based on the pulse frequency of the digital signal and automatically sends a stop command and warning reminder to the automatic feeding device motor controller. At the same time as sending the stop command to the automatic feeding mechanism motor controller, the controller sends a start command to the second inductor sensor 73 and the diversion bin motor controller. When the automatic feeding mechanism motor controller, the second inductor sensor, and the diversion bin motor controller receive the command, they immediately execute the command operation.

[0074] Upon receiving the warning, the operator immediately addresses the material jamming issue in the feeding hopper 1. Simultaneously, when the second photoelectric sensor 73 detects that the medicine blister pack is about to enter the purging area of ​​the diversion hopper 7, it sends a signal to the PCL controller 9. The analog input module converts the signal transmitted by the second photoelectric sensor 73 ("medicine blister pack is about to enter the purging area of ​​the diversion hopper 7") into a digital signal and sends it to the controller. The controller then immediately sends an air valve opening command to the diversion hopper motor controller. Upon receiving the "air valve opening command," the diversion hopper motor controller immediately opens the air valve, purging and diverting the medicine blister pack in the purging area of ​​the diversion hopper 7.

[0075] When the third photoelectric sensor 83 detects that the guide groove 31 below the backup replenishment bin device 8 is empty, the third photoelectric sensor 83 sends a signal to the PCL controller 9. The digital input module converts the "guide groove 31 is short of material" signal sent by the third photoelectric sensor 83 into a digital signal and sends it to the controller. The controller immediately sends a start command to the backup replenishment bin device motor controller. The backup replenishment bin device motor controller immediately starts the backup replenishment bin device 8 to replenish the guide groove 31, thereby ensuring continuous material supply to the packaging machine and avoiding the packaging machine from stopping due to material jamming in the discharge bin 1.

[0076] After the operator resolves the material jamming issue in the feeding hopper 1, the PLC controller 9 automatically sends a shutdown command to the second inductor sensor 73 and the diversion hopper motor controller. The second inductor sensor 73 and the diversion hopper 7 automatically shut down, allowing the upstream conveyor device 2 to resume supplying blister packs to the feeding hopper 1. When the number of blister packs in the feeding hopper 1 reaches the threshold for activating the automatic feeding device 4, the first photoelectric sensor 5 sends a signal to the PLC controller 9. The controller automatically determines that "the feeding hopper 1 fault has been resolved" and automatically sends a start command to the automatic feeding device motor controller, automatically restarting the automatic feeding device 4 to distribute blister packs to the guide trough 31 in the downstream conveyor device 3. When the third photoelectric sensor 93 detects that there are blister packs in the guide trough 31 of the downstream conveyor device 3 of the backup replenishment hopper device 8, it sends a signal to the PLC controller 9. The PLC controller then sends a stop supply command to the backup replenishment hopper device motor controller, and the backup replenishment hopper device 8 automatically stops supplying material to the guide trough 31 of the downstream conveyor device 3.

[0077] When the first photoelectric sensor 5 detects that the number of medicine blister packs in the feeding hopper 1 is lower than the threshold, the first photoelectric sensor 5 sends a signal to the PLC controller 9. The digital input module converts the "feeding hopper 1 is short of material" signal sent by the first photoelectric sensor 5 into a digital signal and sends it to the controller. The controller then compares and determines whether there are still medicine blister packs being delivered in the clean area based on the production instructions entered by the operator before production.

[0078] When there are no medicine blister packs being conveyed in the clean area, the PLC controller 9 does not send any instructions to the automatic feeding mechanism motor controller to continue the feeding task until the first photoelectric sensor 5 sends a "material in feeding bin 1" signal to the PLC controller 9. The PLC controller 9 then immediately sends a stop command to the automatic feeding mechanism motor controller. When the third photoelectric sensor 83 detects that the guide groove 31 about to enter the backup replenishment bin device 8 is empty, the third photoelectric sensor 83 sends a signal to the PLC controller 9. The digital input module converts the "material shortage in guide groove 31" signal sent by the third photoelectric sensor 83 into a digital signal and sends it to the controller. The controller immediately sends a start command to the backup replenishment bin device motor controller. The backup replenishment bin device motor controller immediately starts the backup replenishment bin device 8 to replenish the guide groove 31 until the third photoelectric sensor 83 detects that there is no material in the manual feeding bin 81. Then, it sends a "material shortage in manual feeding bin 81" signal to the PLC controller 9. The PLC controller 9 then immediately sends a stop command to the backup replenishment bin device motor controller and the packaging machine controller to end the production task.

[0079] When there are still blister packs being conveyed in the clean area, the PLC controller 9 instructs the blister packing mechanism in the clean area and the upstream conveying device 2 in the non-clean area to accelerate the supply. The blister packing mechanism in the clean area automatically increases the blister packing speed, and with the upstream conveying device 2 matching the corresponding transmission speed, the unloading hopper 1 in the non-clean area is quickly replenished.

[0080] In this embodiment, parameters such as "threshold", "production instruction", "transmission speed of the transmission device" and "packaging speed of the blister packing mechanism" can all be input into the PLC via a computer.

[0081] The term "automatic feeding device" as used herein can refer not only to the specific structure of the "automatic feeding device" described herein, but also to other "automatic feeding devices" used by those skilled in the art.

[0082] The automatic blister pack feeding mechanism provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An automatic blister pack feeding mechanism, mainly comprising a feeding bin formed by four movable panels and a base, with a hollowed-out groove in the side wall; an upstream conveying device for conveying blister packs to the feeding bin; an automatic feeding device for feeding blister packs from the feeding bin into a guide groove of a downstream conveying device; and a first photoelectric sensor installed outside the feeding bin to detect the position and / or quantity of blister packs in the feeding bin through the hollowed-out groove, characterized in that, The automatic feeding mechanism has a transparent wall panel on the hollow groove of the feeding bin, which guides the medicine tablets from the upstream conveying device into the feeding bin and neatly stacks them on the automatic feeding device.

2. The automatic feeding mechanism according to claim 1, characterized in that, The automatic feeding mechanism is provided with a flow guide hood at the end of the upstream conveying device away from the feeding hopper. The flow guide hood and the upstream conveying device cooperate to form a channel to receive the medicine blister thrown out from the clean area conveyor belt and make the medicine blister automatically slide into the guide trough of the upstream conveying device. The channel can be an inclined channel that slopes from high to low from the end of the upstream conveying device away from the feeding hopper toward the upstream conveying device.

3. The automatic feeding mechanism according to claim 2, characterized in that, The drainage hood mainly consists of a top cover, a drainage plate, and a clamping part. The clamping part is fastened to the top cover and clamped on the upstream conveying device, so that the drainage hood is fixed on the upstream conveying device. The end of the drainage plate near the clean area is connected to the top cover, and the other end is inclined towards the direction of conveying the medicine plate in the guide trough of the upstream conveying device and is lower than the guide trough of the upstream conveying device.

4. The automatic feeding mechanism according to claim 1, characterized in that, The automatic feeding mechanism is equipped with a diversion bin on the upstream conveying device, which intermittently or continuously absorbs the medicine plates in the guide trough of the upstream conveying device.

5. The automatic feeding mechanism according to claim 4, characterized in that, The diversion chamber includes a servo blowing device and a receiving device. The servo blowing device is located on one side of the upstream conveying device and can generate an intermittent or continuous airflow to blow the medicine plates in the upstream conveying device. The receiving device is located on the other side of the upstream conveying device relative to the servo blowing device and receives the medicine plates blown by the servo blowing device.

6. The automatic feeding mechanism according to claim 5, characterized in that, The diversion chamber is equipped with a second photoelectric sensor above the upstream conveying device area purged by the servo blowing device. The sensor detects whether the medicine plate has reached the purging area of ​​the diversion chamber on the upstream conveying device and automatically controls the servo blowing device to purge intermittently or continuously via PLC or relay.

7. The automatic feeding mechanism according to claim 6, characterized in that, The storage device is equipped with a flexible protective component to reduce the impact force between the medicine blister pack and the inner wall of the storage device when the medicine blister pack is stored in the storage device.

8. The automatic feeding mechanism according to claim 1, characterized in that, The automatic feeding mechanism is equipped with a backup material replenishment bin in the area of ​​the downstream conveying device near the inlet of the packaging machine. The automatic feeding device is linked with the detection signal of the medicine plate in the feeding bin by the first photoelectric sensor to automatically and continuously feed the packaging machine.

9. The automatic feeding mechanism according to claim 8, characterized in that, The backup feeding bin device is equipped with a manual feeding bin, a servo feeder and a third photoelectric sensor. The manual feeding bin consists of a hopper that supplies material to the servo feeder and a U-shaped chute. The medicine blister is automatically slid into the hopper by the weight of the blister itself through the U-shaped chute. The third photoelectric sensor is configured to detect whether there are medicine plates in the guide trough of the downstream conveyor located below the manual feeding bin, and to indicate the start and stop of the servo feeder or packaging machine via a relay or PLC controller.

10. The automatic feeding mechanism according to any one of claims 1-9, characterized in that, The automatic feeding mechanism is equipped with a PLC controller. The PLC controller controls the automatic feeding device, the backup replenishment bin, the diversion bin, and the packaging machine to start and stop through the cascaded signals provided by the first photoelectric sensor, the second photoelectric sensor, and / or the third photoelectric sensor.

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