Capsule dosing equipment

Abstract

This utility model discloses a capsule quantitative filling device, including a turntable mounted on a frame, a turntable driving device for intermittently rotating a gripper, an upper capsule shell positioning carrier fixedly mounted on the outer circumference of the turntable at intervals, a lower capsule shell positioning carrier mounted on the outer circumference of the turntable at intervals that can slide radially, a capsule shell misalignment driving device for driving the lower capsule shell positioning carrier to slide radially along the turntable and misalign with the upper capsule shell positioning carrier, a capsule shell feeding mechanism for feeding capsule shells into the capsule shell positioning carrier, a capsule separating mechanism for separating the upper capsule shell in the upper capsule shell positioning carrier and the lower capsule shell in the lower capsule shell positioning carrier, a powder quantitative filling mechanism for quantitatively filling the lower capsule shell with powder, a capsule closing mechanism for inserting the powder-filled lower capsule shell into the upper capsule shell, a capsule discharge mechanism for discharging capsules filled with gelatin powder, and a control system. This utility model occupies little space, has high capsule filling efficiency, and low equipment cost.

Description

Technical Field

[0001] This utility model relates to a pharmaceutical production equipment, and more particularly to a capsule quantitative filling equipment. Background Technology

[0002] Hard capsules are made by filling empty capsules with a certain amount of medicinal extracts, powders, or excipients to form uniform powder or granules, or by directly dispensing medicinal powder into empty capsules. In modern Chinese medicine preparations, hard capsules are preferred due to their relatively simple manufacturing process, convenient administration, rapid onset of action, and effective isolation of unpleasant odors from the medication.

[0003] In existing capsule filling production processes, capsule production lines are often used to produce capsules. The production line completes tasks such as capsule shell feeding, capsule shell opening, powder filling, and capsule shell sealing at various stations. The entire production line has a complex structure and occupies a large space. During the process of opening the capsule and filling it with medicine, the capsule shell is prone to deformation, which can lead to problems such as the finished capsule not closing tightly and leakage. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a capsule quantitative filling device, which can automatically complete the quantitative filling and packaging of capsule products, realizing intelligent production of capsule medicines.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a capsule quantitative filling device, including a frame, a capsule shell feeding mechanism, a turntable, a turntable driving device, a lower capsule shell positioning carrier, an upper capsule shell positioning carrier, a capsule splitting mechanism, a capsule shell misalignment driving device, a capsule closing mechanism, a powder quantitative filling mechanism, a capsule discharge mechanism, and a control system. The turntable is rotatably mounted on the frame. The turntable driving device drives the turntable to rotate intermittently at a fixed angle. Several upper capsule shell positioning carriers are evenly spaced and mounted on the outer circumference of the turntable. Several lower capsule shell positioning carriers are slidably mounted on the outer circumference of the turntable, and each lower capsule shell positioning carrier is directly opposite each upper capsule shell positioning carrier. The lower capsule shell positioning carriers are located below the upper capsule shell positioning carriers. The upper capsule shell positioning carriers have several countersunk through holes corresponding to the size of the upper capsule shells. The lower capsule shell positioning carriers have several lower capsule shell receiving slots corresponding to the size of the lower capsule shells. Upper capsule shells with larger outer diameters can accommodate... The stop is located within the countersunk hole of the upper capsule shell positioning carrier. The lower capsule shell can enter the lower capsule shell receiving groove through the countersunk hole. The capsule shell feeding mechanism can feed the capsules one-to-one into the corresponding upper and lower capsule shell positioning carriers in a specified direction. The capsule separation mechanism can separate the upper capsule shell located in the countersunk hole from the lower capsule shell located in the lower capsule receiving groove. The capsule shell misalignment driving device can drive the lower capsule shell positioning carrier to slide radially along the disc. The capsule is either misaligned or directly aligned with the upper capsule shell positioning carrier. The powder quantitative filling mechanism can quantitatively fill the lower capsule shell on the lower capsule shell positioning carrier with powder. The capsule closing mechanism can close the upper and lower capsule shells that are directly aligned. The capsule discharging mechanism can remove the closed capsule product from the upper and lower capsule positioning carriers. The control system controls the operation of the capsule shell feeding mechanism, turntable drive device, capsule separating mechanism, capsule shell misalignment drive device, capsule closing mechanism, powder quantitative filling mechanism and capsule discharging mechanism.

[0006] As a further improvement of this utility model, the bottom surface of the lower capsule shell receiving groove is provided with a vertically penetrating channel. The capsule splitting mechanism includes a capsule splitting lifting frame, a capsule splitting driving device, a negative pressure airway, and a negative pressure supply device. The capsule splitting lifting frame is mounted on the frame outside the turntable and can move up and down. The capsule splitting driving device drives the capsule splitting lifting frame to move up and down. Several negative pressure airways are provided on the capsule splitting lifting frame. When the capsule splitting lifting frame rises to a specified height, it can seal and connect the negative pressure airways on it with the channels on the bottom surface of the lower capsule shell receiving groove one by one. The negative pressure supply device can provide negative pressure to the negative pressure airways. The depth of the lower capsule shell receiving groove is greater than the height of the lower capsule shell. The lower capsule shell is attracted by negative pressure in the lower capsule shell receiving groove and can slide downward and detach from the upper capsule shell. The control system controls the start and stop of the capsule splitting driving device and the negative pressure supply device.

[0007] As a further improvement of this utility model, the capsule closing mechanism includes a capsule closing lifting frame, a capsule closing drive device, a positive pressure airway, and a positive pressure supply device. The capsule closing lifting frame is mounted on the frame outside the turntable and can move up and down. The capsule closing drive device drives the capsule closing lifting frame to move up and down. Several positive pressure airways are provided on the capsule closing lifting frame. When the capsule closing lifting frame rises to a specified height, the positive pressure airways on it can be sealed and connected one-to-one with the channels on the bottom surface of the lower capsule shell receiving groove. The positive pressure supply device can provide positive pressure to the positive pressure airways. The lower capsule shell is squeezed by positive pressure in the lower capsule shell receiving groove and can slide upward and insert into the upper capsule shell. The control system controls the capsule closing drive device and the positive pressure supply device to start and stop.

[0008] As a further improvement of this utility model, the capsule discharge mechanism includes a discharge lifting frame, a discharge driving device, discharge top rods, a capsule guiding mechanism, and a capsule discharge channel. The capsule discharge channel is fixedly installed on the frame on the outer side of the turntable. The discharge lifting frame is installed on the frame on the outer side of the turntable and can move up and down. The discharge driving device drives the discharge lifting frame to move up and down. Several discharge top rods are fixedly installed on the discharge lifting frame. When the discharge lifting frame rises to a specified height, the discharge top rods on it can be inserted one by one into the channel on the bottom surface of the lower capsule shell receiving groove, and push the capsule out from the countersunk through hole of the upper capsule shell positioning carrier. The capsule guiding mechanism can guide the falling direction of the capsule pushed out from the countersunk through hole of the upper capsule shell positioning carrier so that it falls into the discharge channel. The control system controls the start and stop of the discharge driving device.

[0009] As a further improvement of this utility model, the capsule discharge channel is an inclined slide structure. The lower capsule shell positioning carrier and the upper capsule shell positioning carrier can rotate together to the upper end of the capsule discharge channel. The capsule guiding mechanism is fixedly installed on the discharge fixing frame with a downward-facing cover structure. One side of the cover structure can cover the upper capsule shell positioning carrier, and the other side covers the upper section of the capsule discharge channel. The cover structure of the capsule guiding mechanism has an air blowing hole on the side wall facing away from the capsule discharge channel. The air blowing hole is connected to a positive pressure providing device through a pipe. The positive pressure providing device can provide positive pressure airflow to the air blowing hole. The capsules pushed out to the outside of the upper capsule shell positioning carrier can be blown off by the airflow and fall into the upper end of the capsule discharge channel.

[0010] As a further improvement of this utility model, a dust collection device is also provided, which can vacuum and remove residual drug powder from the lower capsule shell positioning carrier and the upper capsule shell positioning carrier that are circulated to the capsule shell feeding mechanism.

[0011] As a further improvement of this utility model, the capsule shell feeding mechanism includes a vibratory feeder, a capsule shell feeding rack, a capsule shell pushing and pressing block, and a pressing block driving device. The vibratory feeder and the capsule shell feeding rack are fixedly mounted on the outside of the turntable. The capsule shell feeding rack is provided with several vertical channels for capsule shells. These vertical channels are aligned with the countersunk through holes of the upper capsule shell positioning carrier directly below the capsule shell feeding rack. The vibratory feeder can align the capsule shells so that they are discharged along their discharge channels in a specified direction. The discharge channels of the vibratory feeder are aligned with the vertical channels of the capsule shells on the capsule shell feeding rack. The upper end of the straight channel is connected, and the capsule shell push block can be horizontally slidably installed at the lower end of the capsule shell feeding rack. The capsule shell push block is a wedge-shaped block with an inclined surface on its lower side. The capsule shell push block can be inserted between a capsule shell that enters the countersunk through hole of the upper capsule shell positioning carrier and a capsule shell located at the lowest end of the inner side of the capsule shell vertical channel, thus closing the capsule shell vertical channel. At the same time, the inclined surface can push the capsule shell into the countersunk through hole of the upper capsule shell positioning carrier. The block drive device drives the capsule shell push block to extend and retract, and the control system controls the start and stop of the block drive device.

[0012] As a further improvement of this utility model, the powder metering filling mechanism includes a filling support, a filling movable frame, a filling lifting drive device, a powder hopper, a guide funnel, a metering tube, a metering rod, an upper sealing plug, a lower sealing plug, and a dispensing nozzle. The filling support is fixedly installed on the outside of the turntable, and the powder hopper is fixedly installed on the filling support, containing the powder to be filled. Several guide funnels are fixedly installed on the lower side of the powder hopper, with the upper opening of the guide funnel communicating with the inside of the powder hopper. The metering tube is fixedly installed at the lower end of the guide funnel, with the upper opening of the metering tube communicating with the lower opening of the guide funnel. The lower end of the metering rod is inserted into the guide funnel and the metering tube, and the upper end of the metering rod is fixedly connected to the filling movable frame via the powder hopper. The filling movable frame is mounted on the filling support and can be raised and lowered. The filling lifting drive device drives... The filling frame moves up and down. The upper and lower sealing plugs are fixedly installed on the metering rod at intervals. The upper and lower sealing plugs can slide and seal inside the metering tube. When the metering rod moves upward, the upper sealing plug can disengage from the top of the metering tube, thus opening the upper opening of the metering tube. When the metering rod moves downward, the upper sealing plug can re-enter the top rod tube and squeeze the powder inside the metering tube downward. At the same time, the lower sealing plug can disengage from the bottom of the metering tube, thus opening the lower opening of the metering tube. The upper end of the injection nozzle is sealed and connected to the lower end of the metering tube. The lower end of the injection nozzle forms a thin tube with a narrowed diameter. The thin tube can communicate directly with each lower capsule shell in the lower capsule shell positioning carrier directly below the powder metering filling mechanism. The powder metered out of the metering tube can enter the lower capsule shell through the injection nozzle.

[0013] As a further improvement of this utility model, the lower end face of the upper sealing plug is a conical convex surface, and the upper end face of the lower sealing plug is a conical convex surface.

[0014] As a further improvement of this utility model, the upper capsule shell positioning carrier and the lower capsule shell positioning carrier are also provided with an upper pin hole and a lower pin hole facing each other. The lower end of the upper pin hole forms an opening that gradually narrows. A spring and a ball are provided in the upper pin hole. The ball can extend out of the lower opening of the upper pin hole and extend into the lower pin hole to achieve horizontal positioning of the upper capsule positioning carrier and the lower capsule positioning carrier.

[0015] The beneficial technical effects of this utility model are as follows: This utility model, through a capsule shell feeding mechanism, enables the directional loading of capsule shells into the upper and lower capsule shell positioning carriers, which are positioned directly opposite each other. Furthermore, the difference in the inner diameter of the upper and lower ends of the countersunk through-hole in the upper capsule shell positioning carrier achieves the stopping and positioning of the upper capsule shell. Simultaneously, it allows the lower capsule shell to enter the lower capsule shell receiving groove of the lower capsule shell positioning carrier. The capsule shell separation mechanism automatically separates the upper and lower capsule shells, and the capsule shell misalignment drive device drives the lower capsule positioning carrier to move radially along the turntable, achieving radial misalignment between the lower and upper capsule shells, thus allowing the lower capsule shell to... The capsule shell can reach the powder filling position, where the powder filling mechanism automatically fills the lower capsule shell with a fixed amount of powder. The powder-filled lower capsule shell is then aligned with the upper capsule shell as the lower capsule shell positioning carrier resets. After being closed by the capsule closing mechanism, the encapsulation of the powder in the capsule is completed. The encapsulated capsule product is finally discharged through the capsule discharge mechanism. This utility model realizes fully intelligent encapsulation of powder, and the capsule shell will not be damaged during the separation and closure process, ensuring that the capsule product does not leak medicine. In addition, the overall structure of this utility model is compact, occupies little space, has high capsule filling efficiency, simple overall structure, and low equipment cost. Attached Figure Description

[0016] Figure 1 This is a front view illustrating the structural principle of this utility model;

[0017] Figure 2 This is a top view of the structural principle of this utility model;

[0018] Figure 3 This is a perspective view of the capsule shell feeding mechanism of this utility model;

[0019] Figure 4 This is a three-dimensional diagram of the capsule shell feeding principle of this utility model;

[0020] Figure 5 This is a schematic diagram of the capsule shell feeding principle of this utility model;

[0021] Figure 6 This is a three-dimensional view of the misaligned filler of the lower capsule shell positioning carrier of this utility model;

[0022] Figure 7 This is a schematic diagram of the structural principle of the capsule-shaped mechanism of this utility model;

[0023] Figure 8 This is a schematic diagram illustrating the structural principle of the bag-closing mechanism of this utility model;

[0024] Figure 9 This is a front view of the powder metering filling mechanism of this utility model;

[0025] Figure 10 This is a schematic diagram of the initial state of the powder metering and filling mechanism of this utility model.

[0026] Figure 11 This is a schematic diagram of the powder feeding state of the powder metering filling mechanism of this utility model;

[0027] Figure 12 This is a schematic diagram of the finished powder feeding state of the powder metering filling mechanism of this utility model.

[0028] Figure 13 A schematic diagram showing the powder filling state of the powder metering filling mechanism of this utility model;

[0029] Figure 14 This is a front view of the capsule ejection mechanism of this utility model in the state of the capsule being ejected;

[0030] Figure 15 This is a schematic diagram of the capsule discharging mechanism of this utility model. Detailed Implementation

[0031] Example: A capsule quantitative filling device, characterized by comprising a frame, a capsule shell feeding mechanism 1, a turntable 2, a turntable drive device 3, a lower capsule shell positioning carrier 4, an upper capsule shell positioning carrier 5, a capsule separating mechanism 6, a capsule shell misalignment drive device 43, a capsule closing mechanism 7, a powder quantitative filling mechanism 8, a capsule discharging mechanism 9, and a control system. The turntable 2 is rotatably mounted on the frame, and the turntable drive device 3 drives the turntable 2 to rotate intermittently at a fixed angle. A plurality of upper capsule shell positioning carriers 5 are evenly spaced and installed on the outer circumference of the turntable 2. Several lower capsule shell positioning carriers 4 are mounted on the outer circumference of the turntable 2, capable of reciprocating radially along the turntable 2. Each lower capsule shell positioning carrier 4 is directly opposite to each upper capsule shell positioning carrier 5. The lower capsule shell positioning carriers 4 are located below the upper capsule shell positioning carriers 5. The upper capsule shell positioning carriers 5 have several countersunk through holes 51 corresponding to the size of the upper capsule shells. The lower capsule shell positioning carriers 4 have several lower capsule shell receiving grooves 41 corresponding to the size of the lower capsule shells. The upper capsule shells with larger outer diameters can be stopped and accommodated in the upper capsule shell. The lower capsule shell can enter the lower capsule shell receiving groove 41 through the countersunk through hole 51 of the capsule shell positioning carrier 5. The capsule shell feeding mechanism 1 can feed the capsules one-to-one into the upper capsule shell positioning carrier 5 and the lower capsule shell positioning carrier 4 in a specified direction. The capsule separation mechanism 6 can separate the upper capsule shell located in the countersunk through hole 51 from the lower capsule shell located in the lower capsule receiving groove. The capsule shell misalignment driving device 43 can drive the lower capsule shell positioning carrier 4 to slide radially along the disk so that it is aligned with the lower capsule shell positioning carrier 4. The upper capsule shell positioning carrier 5 is misaligned or aligned, the powder quantitative filling mechanism 8 can quantitatively fill the lower capsule shell on the lower capsule shell positioning carrier 4 with powder, the capsule closing mechanism 7 can close the upper and lower capsule shells that are aligned, and the capsule discharge mechanism 9 can remove the closed capsule product from the upper and lower capsule positioning carriers. The control system controls the operation of the capsule shell feeding mechanism 1, the turntable drive device 3, the capsule separating mechanism 6, the capsule shell misalignment drive device 43, the capsule closing mechanism 7, the powder quantitative filling mechanism 8, and the capsule discharge mechanism 9.

[0032] During the production of capsule drugs, the turntable 2 rotates intermittently, thereby intermittently delivering the upper capsule shell positioning carrier 5 and the lower capsule shell positioning carrier 4 to various workstations. When the upper capsule shell positioning carrier 5 and the lower capsule shell positioning carrier 4 rotate vertically to be directly below the capsule shell feeding mechanism 1, the capsule shell feeding mechanism 1 delivers the capsule shells one by one into the countersunk through hole 51 of the upper capsule shell positioning carrier 5. The upper capsule shell is located in the countersunk end of the countersunk through hole 51, while the lower capsule shell enters the lower capsule shell receiving groove 41 of the lower capsule shell positioning carrier 4. When the upper capsule shell positioning carrier 5 and the lower capsule shell positioning carrier 4, which are filled with capsule shells, rotate vertically to the capsule-separating mechanism 6, the capsule-separating machine... The capsule shells are separated by mechanism 6, leaving the upper capsule shell inside the countersunk hole 51 of the upper capsule shell positioning carrier 5, while the lower capsule shell detaches from the upper capsule shell and is accommodated in the lower capsule shell receiving groove 41. After separation, the upper and lower capsule shells, within the upper and lower capsule shell positioning carriers 5 and 4 respectively, rotate with turntable 2 to directly below the powder metering filling mechanism 8. Then, the capsule shell misalignment drive device 43 is activated, causing the lower capsule shell positioning carrier 4 to extend radially outward along turntable 2. At this point, the upper and lower capsule shell positioning carriers 5 and 4 are completely misaligned. The powder metering filling mechanism 8 then meters the lower capsule shells within the lower capsule shell positioning carrier 4. After the powder filling is completed, the capsule shell misalignment drive device 43 drives the lower capsule shell positioning carrier 4 to reset to the position directly opposite the upper capsule shell positioning carrier 5. The upper and lower capsule shell positioning carriers 5 and 4 continue to rotate forward with the turntable 2 until they reach the capsule closing mechanism 7. The capsule closing mechanism 7 causes the lower and upper capsule shells to interlock and close. Finally, when the capsules containing a fixed amount of powder rotate to the capsule discharge mechanism 9, the capsules are discharged from the upper and lower capsule shell positioning carriers 5 and 4. They are then collected by a receiving box or conveyed to subsequent packaging processes by a conveyor belt. The capping equipment has a simple structure and is easy to use. The structure is compact and occupies little space. The entire process of filling the medicine powder is intelligently controlled by the control system. Ideally, photoelectric switches are set at each station to sense whether the upper capsule shell positioning carrier 5 and the lower capsule shell positioning carrier 4 are in place, so as to accurately perform capsule feeding, capsule separation, medicine powder filling, capsule closing and capsule discharge operations. Multiple detection stations and defective product rejection stations can also be set between each step to detect the amount of capsule shells and medicine powder filling, and to reject defective products in advance. The production efficiency of hard capsule drugs using this utility model is high. The whole process does not require manual operation, which saves labor and ensures the aseptic production of drugs.

[0033] The bottom surface of the lower capsule shell receiving groove 41 is provided with a vertically penetrating channel 42. The capsule dispensing mechanism 6 includes a capsule dispensing lifting frame 61, a capsule dispensing driving device 63, a negative pressure airway 62, and a negative pressure providing device 64. The capsule dispensing lifting frame 61 is mounted on the frame outside the turntable 2 and can move up and down. The capsule dispensing driving device 63 drives the capsule dispensing lifting frame 61 to move up and down. Several negative pressure airways 62 are provided on the capsule dispensing lifting frame 61. When the capsule dispensing lifting frame 61 rises to a specified height, it can seal and connect the negative pressure airways 62 on it with the channels 42 on the bottom surface of the lower capsule shell receiving groove 41. The negative pressure providing device 64 can provide negative pressure to the negative pressure airways 62. The depth of the lower capsule shell receiving groove 41 is greater than the height of the lower capsule shell. The lower capsule shell is attracted by negative pressure in the lower capsule shell receiving groove 41 and can slide downward to detach from the upper capsule shell. The control system controls the start and stop of the capsule dispensing driving device 63 and the negative pressure providing device 64. At the capsule separation mechanism 6, after the capsule separation lifting frame 61 rises, the negative pressure airway 62 on it is sealed and connected to the channel 42 on the bottom surface of the lower capsule shell receiving groove 41 of the lower capsule shell positioning carrier. When the negative pressure supply device 64 starts to provide negative pressure, the lower capsule shell is sucked down by the negative pressure, while the upper capsule shell is blocked by the countersunk through hole 51 step and cannot go down, thus finally achieving the separation of the capsule shell. The lower capsule shell finally sticks to the bottom surface of the lower capsule shell receiving groove 41. This structure will not damage the capsule shell during capsule separation.

[0034] The capsule closing mechanism 7 includes a capsule closing lifting frame 71, a capsule closing drive device 73, positive pressure air passages 72, and a positive pressure supply device 74. The capsule closing lifting frame 71 is mounted on the frame outside the turntable 2 and can move up and down. The capsule closing drive device 73 drives the capsule closing lifting frame 71 to move up and down. Several positive pressure air passages 72 are provided on the capsule closing lifting frame 71. When the capsule closing lifting frame 71 rises to a specified height, the positive pressure air passages 72 on it can be sealed and connected one-to-one with the channels 42 on the bottom surface of the lower capsule shell receiving groove 41. The positive pressure supply device 74 can provide positive pressure to the positive pressure air passages 72. The lower capsule shell is squeezed by positive pressure in the lower capsule shell receiving groove 41 and can slide upward and insert into the upper capsule shell. The control system controls the capsule closing drive device 73 and the positive pressure supply device 74 to start and stop. At the capsule-closing mechanism 7, after the capsule-closing lifting frame 71 rises, its positive pressure air passage 72 is sealed and connected to the channel 42 on the bottom surface of the lower capsule shell receiving groove 41 of the lower capsule shell positioning carrier. When the positive pressure supply device 74 starts to provide positive pressure, the lower capsule shell is pushed upward by air pressure, causing the lower capsule shell to insert into the upper capsule shell, thus achieving capsule shell closure. The capsule-closing mechanism 7 can also be equipped with an upper capsule shell baffle plate, which covers the upper side of the upper capsule shell positioning carrier 5 by horizontal sliding or vertical swinging, thereby limiting the upper capsule shell to ensure that the lower capsule shell and the upper capsule shell are fully closed. This structure has high closure efficiency and will not damage the capsule shell. Of course, the capsule-closing mechanism 7 can also use an upward push rod to push the lower capsule shell upward through the channel 42 on the bottom surface of the lower capsule shell receiving groove 41 of the lower capsule shell positioning carrier.

[0035] The capsule discharge mechanism 9 includes a discharge lifting frame 91, a discharge driving device 95, discharge top rods 92, a capsule guiding mechanism 93, and a capsule discharge channel 94. The capsule discharge channel 94 is fixedly installed on the frame outside the circumference of the turntable 2. The discharge lifting frame 91 is installed on the frame outside the circumference of the turntable 2 and can move up and down. The discharge driving device 95 drives the discharge lifting frame 91 to move up and down. Several discharge top rods 92 are fixedly installed on the discharge lifting frame 91. When the discharge lifting frame 91 rises to a specified height, the discharge top rods 92 on it can be inserted one by one into the channel 42 on the bottom surface of the lower capsule shell receiving groove 41, and push the capsule out from the countersunk through hole 51 of the upper capsule shell positioning carrier 5. The capsule guiding mechanism 93 can guide the falling direction of the capsule pushed out from the countersunk through hole 51 of the upper capsule shell positioning carrier 5 so that it falls into the discharge channel 42. The control system controls the start and stop of the discharge driving device 95. After the capsule shells are closed, they reach the capsule discharge mechanism 9. First, the discharge push rod 92 pushes the capsules upward from the countersunk through hole 51 of the upper capsule shell positioning carrier 5. Then, the capsule guide mechanism 93 causes the capsules to fall directionally into the capsule discharge channel 94 and finally be discharged. This discharge method can ensure that the capsules are not damaged during the discharge process. Alternatively, a flipping frame can be set on the turntable 2. The upper capsule shell positioning carrier 5 and the upper capsule shell positioning carrier 5 can be installed on the flipping frame. When they reach the discharge mechanism, the capsules are poured out by flipping them 180 degrees.

[0036] The capsule discharge channel 94 is an inclined slide structure. The lower capsule shell positioning carrier 4 and the upper capsule shell positioning carrier 5 can rotate together to the upper part of the capsule discharge channel 94. The capsule guide mechanism 93 is fixedly installed on the discharge fixing frame with a downward-facing cover structure. One side of the cover structure can cover the upper capsule shell positioning carrier 5, and the other side covers the upper section of the capsule discharge channel 94. The cover structure of the capsule guide mechanism 93 has an air blowing hole 96 on the side wall facing away from the capsule discharge channel 94. The air blowing hole 96 is connected to the positive pressure providing device 74 through a pipe. The positive pressure providing device 74 can provide positive pressure airflow to the air blowing hole. The capsules pushed out to the outside of the upper capsule shell positioning carrier 5 can be blown down by the airflow and fall into the upper part of the capsule discharge channel 94. The capsules are blown down and fall in a directional manner by blowing air.

[0037] A dust collection device 10 is also provided. The dust collection device 10 can vacuum and remove residual medicine powder from the lower capsule shell positioning carrier 4 and the upper capsule shell positioning carrier 5 before they circulate to the capsule shell feeding mechanism 1. The dust collection device 10 can also vacuum the lower capsule shell positioning carrier 4 and the upper capsule shell positioning carrier 5 after the capsules are discharged to prevent medicine powder from sticking to the lower capsule shell positioning carrier 4 and the upper capsule shell positioning carrier 5 and affecting the subsequent capsules to fill with medicine powder in a quantitative manner.

[0038] The capsule shell feeding mechanism 1 includes a vibratory feeder 11, a capsule shell feeding rack 12, a capsule shell pushing and pressing block 13, and a pressing block driving device 14. The vibratory feeder 11 and the capsule shell feeding rack 12 are fixedly mounted on the outside of the turntable 2. The capsule shell feeding rack 12 is provided with a plurality of capsule shell vertical channels 121. The capsule shell vertical channels 121 are aligned with the countersunk through holes 51 of the upper capsule shell positioning carrier 5 directly below the capsule shell feeding rack 12. The vibratory feeder 11 can align the capsule shells so that they are discharged in a specified direction along their discharge channels 111. The discharge channels 111 of the vibratory feeder 11 are aligned with the capsule shell vertical channels 121 on the capsule shell feeding rack 12. The upper end of channel 121 is connected, and the capsule shell push block 13 can be horizontally slidably installed at the lower end of the capsule shell feeding rack 12. The capsule shell push block 13 is a wedge-shaped block with an inclined surface on its lower side. The capsule shell push block 13 can be inserted between a capsule shell that enters the countersunk through hole 51 of the upper capsule shell positioning carrier 5 and a capsule shell located at the lowest end of the inner side of the capsule shell vertical channel 121, thus closing the capsule shell vertical channel 121. At the same time, the inclined surface can push the capsule shell into the countersunk through hole 51 of the upper capsule shell positioning carrier 5. The block driving device 14 drives the capsule shell push block 13 to extend and retract, and the control system controls the start and stop of the block driving device 14.

[0039] After being sorted by the vibratory feeder 11, the capsule shells are oriented and output outwards, then enter the capsule shell vertical channel 121 on the capsule shell feeding rack 12. The capsules move downwards along the capsule shell vertical channel 121. During the reciprocating horizontal sliding process of the capsule shell pusher block 13, the capsules are opened and closed along the capsule shell vertical channel 121, so that one capsule shell enters the capsule positioning carrier at a time. At the same time, the inclined surface of the capsule shell pusher block 13 presses the capsule shell downwards, so that the capsule shell is completely inserted into the countersunk through hole 51 of the upper capsule shell positioning carrier 5. Ideally, there should be a certain amount of friction between the upper capsule shell and the countersunk head of the capsule shell countersunk through hole 51 to ensure that it will not be thrown out during transportation and to facilitate subsequent capsule closing.

[0040] The powder filling mechanism 8 includes a filling support 81, a filling movable frame 82, a filling lifting drive device 821, a powder hopper 83, a guide funnel 84, a metering tube 85, a metering lever 86, an upper sealing plug 87, a lower sealing plug 88, and a dispensing nozzle 89. The filling support 81 is fixedly mounted on the outside of the turntable 2. The powder hopper 83 is fixedly mounted on the filling support 81 and contains powder to be filled. Several guide funnels 84 are fixedly mounted on the lower side of the powder hopper 83, with the upper opening of the guide funnel 84 communicating with the inside of the powder hopper 83. The metering tube 85 is fixedly mounted on the lower end of the guide funnel 84, with the upper opening of the metering tube 85 communicating with the lower opening of the guide funnel 84. The lower end of the metering lever 86 is inserted into the guide funnel 84 and the metering tube 85. The upper end of the metering lever is fixedly connected to the filling movable frame 82 via the powder hopper 83. The filling movable frame 82 is mounted on the filling support 81 and can be lifted and lowered. The drive filling frame 82 moves up and down. The upper sealing plug 87 and the lower sealing plug 88 are fixedly installed on the metering rod 86 at intervals. The upper sealing plug 87 and the lower sealing plug 88 can slide in a sealed manner within the metering tube 85. When the metering rod moves upward, the upper sealing plug 87 can disengage from the upper end of the metering tube 85, thereby opening the upper end of the metering tube 85. When the metering rod moves downward, the upper sealing plug 87 can re-enter the top rod tube and squeeze the powder in the metering tube 85 downward. At the same time, the lower sealing plug 88 disengages from the lower end of the metering tube 85, thereby opening the lower end of the metering tube 85. The upper end of the injection nozzle 89 is sealed and connected to the lower end of the metering tube 85. The lower end of the injection nozzle 89 forms a thin tube with a narrowed diameter. The thin tube can be directly connected to each lower capsule shell in the lower capsule shell positioning carrier 4 located directly below the powder metering filling mechanism 8. The powder metered out of the metering tube 85 can enter the lower capsule shell through the injection nozzle 89.

[0041] The metering rod is used to repeatedly move up and down to quantitatively fill the drug powder. When the upper sealing plug 87 moves upward and exits the upper end of the metering tube 85, the opening at the upper end of the metering tube 85 opens, and the drug powder quickly enters the metering tube 85 through the inclined surface of the guide funnel 84. When the metering rod moves down to the point where the upper sealing plug 87 and the lower sealing plug 88 just seal the upper and lower ends of the metering tube 85, the drug powder is quantitatively filled. At this time, the metering rod continues to move down, and the upper sealing plug 87 will seal and block the quantitatively filled drug powder from the drug powder in the guide funnel 84, thus sealing it. The lower sealing plug 88 opens the lower end of the metering tube 85, and the quantitatively filled drug powder falls downward into the injection nozzle 89. The drug powder enters the lower capsule shell along the injection nozzle 89, thus achieving quantitative filling of the drug powder. The above mechanism realizes quantitative filling of the drug in the capsule shell, which is conducive to consistent drug efficacy. The whole structure is simple, and only requires repeated pulling of the metering rod. The drug powder quantitative accuracy is high.

[0042] The lower end face of the upper sealing plug 87 is a conical convex surface, and the upper end face of the lower sealing plug 88 is a conical convex surface, ensuring that the upper sealing plug 87 and the lower sealing plug 88 can smoothly enter the metering tube 85.

[0043] The upper capsule shell positioning carrier 5 and the lower capsule shell positioning carrier 4 are also provided with opposing upper and lower pin holes. The lower end of the upper pin hole forms a gradually narrowing structure. A spring and a ball are installed inside the upper pin hole. The ball can extend out of the lower opening of the upper pin hole and can also extend into the lower pin hole to achieve horizontal positioning of the upper and lower capsule positioning carriers. The above structure ensures that when the lower capsule shell positioning carrier 4 and the upper capsule positioning carrier are aligned, the lower capsule receiving device on the lower capsule shell is coaxially aligned with the countersunk through hole 51 on the upper capsule positioning carrier.

Claims

1. A capsule quantitative filling device, characterized in that: The system includes a frame, a capsule shell feeding mechanism (1), a turntable (2), a turntable drive device (3), a lower capsule shell positioning carrier (4), an upper capsule shell positioning carrier (5), a capsule splitting mechanism (6), a capsule shell misalignment drive device (43), a capsule closing mechanism (7), a powder quantitative filling mechanism (8), a capsule discharge mechanism (9), and a control system. The turntable is rotatably mounted on the frame, and the turntable drive device drives the turntable to rotate intermittently at a fixed angle. Several upper capsule shell positioning carriers are evenly spaced around the circumference of the turntable. On the outer wall, several lower capsule shell positioning carriers are installed on the outer wall of the turntable, which can slide back and forth radially along the turntable. Each lower capsule shell positioning carrier is directly opposite to each upper capsule shell positioning carrier. The lower capsule shell positioning carriers are located below the upper capsule shell positioning carriers. The upper capsule shell positioning carriers are provided with several countersunk through holes (51) that correspond to the size of the upper capsule shells. The lower capsule shell positioning carriers are provided with several lower capsule shell receiving grooves (41) that correspond to the size of the lower capsule shells. The upper capsule shells with larger outer diameters are... The upper capsule shell is positioned within the countersunk hole of the upper capsule shell positioning carrier, allowing the lower capsule shell to enter the lower capsule shell receiving groove through the countersunk hole. The capsule shell feeding mechanism feeds capsules one-to-one into the corresponding upper and lower capsule shell positioning carriers in a specified direction. The capsule separation mechanism separates the upper capsule shell located in the countersunk hole from the lower capsule shell located in the lower capsule receiving groove. The capsule shell misalignment driving device drives the lower capsule shell positioning carrier to slide radially along the disc. The capsules are positioned either misaligned or directly aligned with the upper capsule shell positioning carrier. The powder filling mechanism can quantitatively fill the lower capsule shell on the lower capsule shell positioning carrier with powder. The capsule closing mechanism can close the upper and lower capsule shells that are directly aligned. The capsule discharging mechanism can remove the closed capsules from the upper and lower capsule positioning carriers. The control system controls the operation of the capsule shell feeding mechanism, the turntable drive device, the capsule separating mechanism, the capsule shell misalignment drive device, the capsule closing mechanism, the powder filling mechanism, and the capsule discharging mechanism.

2. The capsule quantitative filling device according to claim 1, characterized in that: The bottom surface of the lower capsule shell receiving groove is provided with a vertically penetrating channel (42). The capsule splitting mechanism includes a capsule splitting lifting frame (61), a capsule splitting drive device (63), a negative pressure airway (62), and a negative pressure supply device (64). The capsule splitting lifting frame is mounted on the frame outside the turntable and can move up and down. The capsule splitting drive device drives the capsule splitting lifting frame to move up and down. Several negative pressure airways are provided on the capsule splitting lifting frame. When the capsule splitting lifting frame rises to a specified height, it can seal and connect the negative pressure airways on it with the channels on the bottom surface of the lower capsule shell receiving groove one by one. The negative pressure supply device can provide negative pressure to the negative pressure airways. The depth of the lower capsule shell receiving groove is greater than the height of the lower capsule shell. The lower capsule shell is attracted by negative pressure in the lower capsule shell receiving groove and can slide downward and detach from the upper capsule shell. The control system controls the capsule splitting drive device and the negative pressure supply device to start and stop.

3. The capsule quantitative filling device according to claim 2, characterized in that: The capsule closing mechanism includes a capsule closing lifting frame (71), a capsule closing drive device (73), a positive pressure airway (72), and a positive pressure supply device (74). The capsule closing lifting frame is mounted on the frame outside the turntable and can move up and down. The capsule closing drive device drives the capsule closing lifting frame to move up and down. Several positive pressure airways are provided on the capsule closing lifting frame. When the capsule closing lifting frame rises to a specified height, the positive pressure airways on it can be sealed and connected one by one with the channels on the bottom surface of the lower capsule shell receiving groove. The positive pressure supply device can provide positive pressure to the positive pressure airways. The lower capsule shell is squeezed by positive pressure in the lower capsule shell receiving groove and can slide upward and insert into the upper capsule shell. The control system controls the capsule closing drive device and the positive pressure supply device to start and stop.

4. The capsule quantitative filling device according to claim 2, characterized in that: The capsule discharge mechanism includes a discharge lifting frame (91), a discharge driving device (95), a discharge top rod (92), a capsule guiding mechanism (93), and a capsule discharge channel (94). The capsule discharge channel is fixedly installed on the frame outside the circumference of the turntable. The discharge lifting frame is installed on the frame outside the circumference of the turntable and can move up and down. The discharge driving device drives the discharge lifting frame to move up and down. Several discharge top rods are fixedly installed on the discharge lifting frame. When the discharge lifting frame rises to a specified height, the discharge top rods on it can be inserted into the channel on the bottom surface of the lower capsule shell receiving groove one by one, and push the capsule out from the countersunk through hole of the upper capsule shell positioning carrier. The capsule guiding mechanism can guide the direction of the capsule falling from the countersunk through hole of the upper capsule shell positioning carrier so that it falls into the discharge channel. The control system controls the start and stop of the discharge driving device.

5. The capsule quantitative filling device according to claim 4, characterized in that: The capsule discharge channel is an inclined slide structure. The lower capsule shell positioning carrier and the upper capsule shell positioning carrier can rotate together to the upper end of the capsule discharge channel. The capsule guide mechanism is fixedly installed on the discharge fixing frame with a downward-facing cover structure. One side of the cover structure can cover the upper capsule shell positioning carrier, and the other side covers the upper section of the capsule discharge channel. The cover structure of the capsule guide mechanism has an air blowing hole (96) on the side wall facing away from the capsule discharge channel. The air blowing hole is connected to a positive pressure providing device through a pipe. The positive pressure providing device can provide positive pressure airflow to the air blowing hole. The capsules pushed out to the outside of the upper capsule shell positioning carrier can be blown off by the airflow and fall into the upper end of the capsule discharge channel.

6. The capsule quantitative filling device according to claim 1, characterized in that: It is also equipped with a dust collection device (10), which can vacuum and remove residual powder from the lower capsule shell positioning carrier and the upper capsule shell positioning carrier that are circulated to the capsule shell feeding mechanism.

7. The capsule quantitative filling device according to claim 1, characterized in that: The capsule shell feeding mechanism includes a vibratory feeder (11), a capsule shell feeding rack (12), a capsule shell pushing block (13), and a block driving device (14). The vibratory feeder and the capsule shell feeding rack are fixedly mounted on the outside of the turntable. The capsule shell feeding rack is provided with several vertical capsule shell channels (121). The vertical capsule shell channels are aligned with the countersunk through holes of the upper capsule shell positioning carrier directly below the capsule shell feeding rack. The vibratory feeder can align the capsule shells so that they are discharged in a specified direction along their discharge channels (111). The discharge channels of the vibratory feeder are aligned with the capsule shell feeding rack. The upper end of the capsule shell vertical channel is connected, and the capsule shell push block can be horizontally slidably installed at the lower end of the capsule shell feeding rack. The capsule shell push block is a wedge-shaped block with an inclined surface on its lower side. The capsule shell push block can be inserted between a capsule shell that enters the countersunk through hole of the upper capsule shell positioning carrier and a capsule shell located at the lowest end of the inner side of the capsule shell vertical channel, thus closing the capsule shell vertical channel. At the same time, the inclined surface can push the capsule shell into the countersunk through hole of the upper capsule shell positioning carrier. The block drive device drives the capsule shell push block to extend and retract, and the control system controls the start and stop of the block drive device.

8. The capsule quantitative filling device according to claim 1, characterized in that: The powder filling mechanism includes a filling support (81), a filling movable frame (82), a filling lifting drive device (821), a powder hopper (83), a guide funnel (84), a metering tube (85), a metering rod (86), an upper sealing plug (87), a lower sealing plug (88), and a dispensing nozzle (89). The filling support is fixedly installed on the outside of the turntable, and the powder hopper is fixedly installed on the filling support. The powder hopper contains the powder to be filled. Several guide funnels are fixedly installed on the lower side of the bottom of the powder hopper, and the upper opening of the guide funnel is connected to the inside of the powder hopper. The metering tube is fixedly installed at the lower end of the guide funnel, and the upper opening of the metering tube is connected to the lower opening of the guide funnel. The lower end of the metering rod is inserted into the guide funnel and the metering tube. The upper end of the metering rod is fixedly connected to the filling movable frame through the powder hopper. The filling movable frame is installed on the filling support in a lifting manner. On the filling support, the filling lifting drive drives the filling movable frame to move up and down. The upper and lower sealing plugs are fixedly installed on the metering rod at intervals. The upper and lower sealing plugs can slide and seal inside the metering tube. The upward movement of the metering rod allows the upper sealing plug to detach from the metering tube from the top, thereby opening the upper opening of the metering tube. The downward movement of the metering rod allows the upper sealing plug to re-enter the top rod tube and squeeze the powder inside the metering tube downwards. At the same time, it allows the lower sealing plug to detach from the metering tube from the bottom, thereby opening the lower opening of the metering tube. The upper end of the injection nozzle is sealed and connected to the lower end of the metering tube. The lower end of the injection nozzle forms a thin tube with a narrowed diameter. The thin tube can communicate directly with each lower capsule shell in the lower capsule shell positioning carrier directly below the powder metering filling mechanism. The powder metered out of the metering tube can enter the lower capsule shell through the injection nozzle.

9. The capsule quantitative filling device according to claim 8, characterized in that: The lower end face of the upper sealing plug is a conical convex surface, and the upper end face of the lower sealing plug is a conical convex surface.

10. The capsule quantitative filling device according to claim 1, characterized in that: The upper capsule shell positioning carrier and the lower capsule shell positioning carrier are also provided with an upper pin hole and a lower pin hole facing each other. The lower end of the upper pin hole forms an opening that gradually narrows. A spring and a ball are provided inside the upper pin hole. The ball can extend out of the lower opening of the upper pin hole and can also extend into the lower pin hole to achieve horizontal positioning of the upper capsule positioning carrier and the lower capsule positioning carrier.

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