A granular preparation dispensing device and a control method thereof

Abstract

The present application provides a granular preparation quantitative dispensing device, comprising: a dispensing mechanism comprising a first dispensing plate and a second dispensing plate; a driving mechanism comprising a first screw nut assembly in transmission connection with the first dispensing plate, and a second screw nut assembly in transmission connection with the second dispensing plate; the driving mechanism further comprises: a clockwork in transmission connection with the first screw, for driving the first nut to move in a first direction; a motor in transmission connection with the first screw and the second screw, for driving the first nut to move in a second direction, and driving the second nut to move in two directions. The present application drives the first dispensing plate to move in the first direction by the clockwork, so that the device only needs to control one motor to run, thereby realizing the quantitative dispensing of the granular preparation, completing the whole dispensing process, simplifying the control system and control process of the quantitative dispensing device, and reducing the operation difficulty and error rate of the device. The present application also provides a control method of the above granular preparation quantitative dispensing device.

Description

Technical Field

[0001] This invention belongs to the field of pharmaceutical production technology and relates to a quantitative dispensing device for granule preparations, specifically a quantitative dispensing device for traditional Chinese medicine formula granule preparations, and also relates to a control method for the quantitative dispensing device for granule preparations. Background Technology

[0002] Traditional Chinese medicine (TCM) granules refer to granule preparations made by processing Chinese medicinal herbs according to traditional processing techniques, and then using modern pharmaceutical methods to extract and separate the effective components of each herb based on its physicochemical properties, main components, and indications. These granules are then dispensed and taken orally according to prescriptions in clinical practice. When using TCM granules in TCM pharmacies to dispense multiple herbal formulas according to a prescribed dosage, the traditional method of manually weighing and dispensing decoction pieces is insufficient in terms of labor costs, efficiency, and hygiene.

[0003] The emergence of quantitative dispensing machinery has greatly liberated manpower and improved efficiency. Quantitative dispensing machinery includes a dispensing mechanism and a driving mechanism. The dispensing mechanism contains a first dispensing plate and a second dispensing plate. During operation, the driving mechanism drives the first and second dispensing plates to move relative to each other to determine the dispensing quantity, and drives the first and second dispensing plates to move synchronously to transfer the granular formulation.

[0004] However, the existing quantitative dispensing machinery generally uses two motors to control the movement of the first dispensing plate and the second dispensing plate, which is cumbersome and complex.

[0005] Therefore, designing a quantitative dispensing device for granule formulations that can simplify the control process has become a technical problem that urgently needs to be solved by those skilled in the art.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a quantitative dispensing device for granule preparations. By setting the movement of the first dispensing plate in the first direction to be driven by a spring and the movement of the second dispensing plate in the first direction to be driven by a motor, the quantitative dispensing mechanism is completed. The movement of the first dispensing plate and the second dispensing plate in the second direction is synchronously driven by a motor to complete the transfer and dispensing of granule preparations. During the operation of the device, only one motor needs to be controlled to complete the entire dispensing process, which simplifies the control system and control process of the quantitative dispensing device and solves the problem of cumbersome control process of the existing quantitative dispensing device.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0009] A granule dosage form dispensing device, comprising:

[0010] The dispensing mechanism includes a first dispensing plate and a second dispensing plate;

[0011] The drive mechanism includes a first lead screw and nut assembly that is drivenly connected to the first adjusting plate, and a second lead screw and nut assembly that is drivenly connected to the second adjusting plate; the drive mechanism further includes:

[0012] The spring, connected to the first lead screw, is used to drive the first nut to move in the first direction;

[0013] The motor is connected to the first lead screw and the second lead screw, and is used to drive the first nut to move in the second direction and drive the second nut to move in both directions.

[0014] Furthermore, the output end of the motor is connected to the first lead screw and the second lead screw through a first transmission gear set and a second transmission gear set, respectively.

[0015] The first driving gear of the first transmission gear set is connected to the output end of the motor via a one-way bearing.

[0016] Furthermore, the first driven gear of the first transmission gear set is connected to the first lead screw via a torque limiter:

[0017] The inner layer of the torque limiter is circumferentially limited to the first lead screw, and the first driven gear of the first transmission gear set is circumferentially limited to the outer layer of the torque limiter.

[0018] Furthermore, the maximum frictional force between the inner and outer layers of the torque limiter is less than or equal to the elastic force when the mainspring is fully wound.

[0019] Furthermore, the transfer agencies include:

[0020] A feed plate with a feed inlet;

[0021] The discharge plate is located below the feed plate, and has discharge ports arranged alternately with the feed inlet;

[0022] A closed-end chute is provided between the feed plate and the discharge plate, and the first and second adjusting plates are slidably disposed in the chute.

[0023] Furthermore, the first adjusting plate is located on the side of the inlet near the outlet, and has the following characteristics:

[0024] In the first position, the end face of the first adjusting plate near the second adjusting plate is aligned with the side of the discharge port away from the inlet.

[0025] In the second position, the end face of the first adjusting plate near the second adjusting plate is aligned with the side of the feed inlet near the discharge outlet.

[0026] Furthermore, a limiting structure is provided between the first adjusting plate and the wall of the chute, including:

[0027] A limiting groove is provided on one of the side wall of the first adjusting plate and the groove wall of the sliding groove, and extends along the sliding direction of the first adjusting plate.

[0028] A limiting protrusion is provided on the side wall of the first dispensing plate and the other side of the groove wall of the slide, extending at least partially into the limiting groove, for abutting against the limiting groove when the first dispensing plate slides to the first position and / or the second position.

[0029] The present invention also provides a control method for the above-mentioned quantitative dispensing device for granule formulations.

[0030] When the motor drives the second nut to move in the first direction, the spring force is released, driving the first nut to move in the first direction;

[0031] When the motor drives the second nut to move in the second direction, the first nut moves synchronously in the second direction, and the first lead screw drives the spring to store power.

[0032] Furthermore, when the first adjusting plate moves to the second position in the first direction, it stops, the spring stops releasing, and the second adjusting plate continues to move a preset distance in the first direction under the drive of the motor;

[0033] When the first adjusting plate moves to the first position in the second direction, it stops, and the spring stops storing power. The second adjusting plate continues to move in the first direction under the drive of the motor until it is in contact with the first adjusting plate.

[0034] Furthermore, it also includes a detection unit for identifying the position of the second nut, which is connected in communication with the motor and is used to control the motor to stop when the second adjusting plate moves to a preset position in the first direction and when the second adjusting plate moves to a second direction and is in contact with the first adjusting plate in the first position.

[0035] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0036] 1. This invention completes the quantitative dispensing mechanism by setting the movement of the first dispensing plate in the first direction to be driven by a spring and the movement of the second dispensing plate in the first direction to be driven by a motor. The movement of the first and second dispensing plates in the second direction is synchronously driven by a motor to complete the transfer and dispensing of granular formulations. During operation, the device only needs to control one motor to complete the entire dispensing process, which simplifies the control system and control process of the quantitative dispensing device and reduces the operation difficulty and error rate of the device.

[0037] 2. By setting a torque limiter, the present invention ensures that after the mainspring is wound, the motor can still drive the second adjusting plate to continue moving in the second direction, thereby ensuring the reliability of the device and improving its service life.

[0038] At the same time, the present invention has a simple structure, significant effects, and is suitable for widespread use.

[0039] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0040] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0041] Figure 1 This is a schematic diagram of the overall structure of the granule formulation quantitative dispensing device in an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the assembly structure of the dispensing mechanism and the dispensing bottle in an embodiment of the present invention;

[0043] Figure 3 This is an exploded view of the dispensing mechanism in an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the bottom structure of the dispensing mechanism in an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the top structure of the feed plate in an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the dispensing plate in an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of the internal structure of the placement slot in an embodiment of the present invention;

[0048] Figure 8 This is a schematic diagram showing the disassembled structure of the granule formulation quantitative dispensing device in Embodiment 3 of the present invention;

[0049] Figure 9 This is a schematic diagram of the internal structure of the drive mechanism in Embodiment 3 of the present invention;

[0050] Figure 10 This is a schematic diagram showing the disassembled structure of the granule formulation quantitative dispensing device in Embodiment 4 of the present invention;

[0051] Figure 11 This is a schematic diagram of the mounting structure of the spring in an embodiment of the present invention;

[0052] Figure 12 This is a schematic diagram of the internal structure of the drive mechanism in Embodiment 4 of the present invention.

[0053] Description of main components in the diagram:

[0054] 1. Adjustment mechanism; 101. Feed plate; 1011. Mounting port; 1012. Feed port; 102. Discharge plate; 1021. Discharge port; 103. First adjustment plate; 104. Second adjustment plate; 105. Return spring; 106. Chip; 107. Cover plate; 108. Magnet; 109. Drive block; 110. Drive hole; 111. Guide groove; 112. Tenon groove; 113. Slide groove; 114. Cavity; 115. Limiting groove; 116. Limiting protrusion; 2. Drive mechanism; 201. Shell 202. Body; 202. Placement plate; 2021. Placement slot; 203. First motor; 204. Second motor; 205. First lead screw and nut assembly; 206. Second lead screw and nut assembly; 207. First push rod; 208. Second push rod; 209. Reed switch; 210. Card reader; 211. Tenon; 212. First transmission gear set; 213. Second transmission gear set; 214. Motor; 215. One-way bearing; 216. Torque limiter; 217. Spring; 3. Refrigeration bottle; 301. Slot.

[0055] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0057] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0058] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0059] Example 1

[0060] like Figures 1 to 12 As shown in the embodiment of the present invention, a quantitative dispensing device for granule preparations is introduced, which includes a dispensing mechanism 1 for quantitative dispensing of granule preparations and a driving mechanism 2 for driving the dispensing mechanism 1 to operate.

[0061] like Figures 2 to 6 As shown, in this embodiment, the dispensing mechanism 1 includes a feed plate 101, a discharge plate 102, and a dispensing plate disposed between the two. Specifically, the top of the feed plate 101 has an upwardly extending mounting port 1011 for mounting a dispensing bottle 3. The mounting port 1011 is used to connect with the mouth of the dispensing bottle 3 containing granular preparations. The dispensing bottle 3 is inverted, and its mouth is fastened to the mounting port 1011. The feed plate 101 can seal the mouth of the dispensing bottle 3. A feed inlet 1012 is provided on the feed plate 101 within the range of the mounting port 1011. The feed inlet 1012 vertically penetrates the feed plate 101 and is used to discharge the granular preparations from the dispensing bottle 3. The dispensing plate is disposed below the feed plate 101 and has a cavity 114 for temporarily containing granular preparations. The granular preparations discharged from the feed inlet 1012 are temporarily stored in the cavity 114. The discharge plate 102 is located below the dispensing plate, and the discharge plate 102 has discharge ports 1021 arranged alternately with the inlet 1012 for discharging the granular formulation within the cavity 114. The cavity 114 controls the opening and closing of the inlet 1012 and the discharge port 1021 by reciprocating between them, thereby completing the actions of drug feeding, transfer, and discharging.

[0062] In this embodiment, the mounting port 1011 engages with the mouth of the dispensing bottle 3. Specifically, the outer peripheral wall of the mouth of the dispensing bottle 3 is provided with a groove 301, which includes a first groove 301 extending axially from the end of the mouth away from the bottle body towards the bottle body, and a second groove 301 extending circumferentially from the end of the first groove 301 near the bottle body. The shape of the mounting port 1011 is adapted to the shape of the bottle mouth, and the outer peripheral wall of the bottle mouth fits against the inner wall of the mounting port 1011. The inner wall of the mounting port 1011 is provided with a protrusion that is adapted to the groove 301. During installation, the protrusion is inserted into the first groove 301, and then the bottle body or the mounting port 1011 is rotated to make the protrusion engage in the second groove 301.

[0063] In this embodiment, a groove 113 is provided between the feed plate 101 and the discharge plate 102. The dispensing plate is slidably disposed in the groove 113. The side wall of the dispensing plate is slidably engaged with the groove wall of the groove 113. The upper and lower end faces of the dispensing plate are respectively attached to and slidably engaged with the feed plate 101 and the discharge plate 102.

[0064] The dispensing plate includes a first dispensing plate 103 and a second dispensing plate 104. The adjacent end faces of the first dispensing plate 103 and the second dispensing plate 104 engage with each other, forming a cavity 114 between them. The first dispensing plate 103 has at least one recess, and the second dispensing plate 104 has protrusions that correspondingly engage with the recesses. The engagement of the recesses and protrusions forms the cavity 114. In this embodiment, multiple recesses and protrusions can be configured to engage with each other, and the number of recesses and protrusions can be set according to actual needs.

[0065] Preferably, in this embodiment, the first dispensing plate 103 is provided with a recess at one end near the second dispensing plate 104, and the second dispensing plate 104 is provided with a corresponding protrusion, so that two cavities 114 are formed around the sides of the first dispensing plate 103 and the second dispensing plate 104 and the groove wall of the slide 113. The volume of the two cavities 114 can be the same or different.

[0066] Preferably, the two cavities 114 are of the same size. The feed plate 101 has two feed ports 1012 corresponding to the two cavities 114 respectively, and the discharge plate 102 has two discharge ports 1021. The corresponding feed ports 1012 and discharge ports 1021 are vertically offset from each other, and the width of the feed ports 1012 and discharge ports 1021 is greater than or equal to the width of their corresponding cavities 114. This forms two sets of discharge structures on the dispensing mechanism 1, allowing two portions of granular preparation of the same volume to be dispensed simultaneously with a single push operation, thus improving work efficiency.

[0067] In this embodiment, the chute 113 is integrated with the feed plate 101, extending downward from the bottom of the feed plate 101. The discharge plate 102 is fastened to the bottom of the chute 113, i.e., at the opening of the chute 113, and is installed with the feed plate 101 by bolts, screws, or other connecting parts. Alternatively, the chute 113 is integrated with the discharge plate 102, extending upward from the top of the discharge plate 102. The feed plate 101 is fastened to the top of the chute 113 to close the opening of the chute 113, and the feed plate 101 and the discharge plate 102 are installed by bolts, screws, or other connecting parts. In this embodiment, the first dispensing plate 103 and the second dispensing plate 104 are both slidably embedded in the groove 113. The left and right sidewalls of the first dispensing plate 103 and the second dispensing plate 104 are slidably engaged with the groove wall of the groove 113, and the upper and lower end faces of the first dispensing plate 103 and the second dispensing plate 104 are slidably engaged with the bottom surface of the feed plate 101 and the top surface of the discharge plate 102, respectively.

[0068] In this embodiment, the first dispensing plate 103 is disposed on the side of the inlet 1012 near the outlet 1021, and the second dispensing plate 104 is disposed on the side of the outlet 1021 near the inlet 1012. The working process of the dispensing mechanism 1 is as follows:

[0069] Initially, the first dispensing plate 103 and the second dispensing plate 104 are in contact with each other, the volume of the cavity 114 is zero, and the first dispensing plate 103 and the second dispensing plate 104 block the feed inlet 1012, preventing the granules from being dispensed above the metering component. When it is necessary to dispense the granules in a metered manner, the first dispensing plate 103 moves to a position where its end near the second dispensing plate 104 is flush with the side of the feed inlet 1012 near the discharge outlet 1021. The second dispensing plate 104 is moved a specified distance away from the first dispensing plate 103, creating a specified gap between the first dispensing plate 103 and the second dispensing plate 104, forming the cavity 114. The granules fall into the cavity 114 from the feed inlet 1012, filling the cavity 114. The gap between the first dispensing plate 103 and the second dispensing plate 104 remains unchanged. The plates move synchronously until they are completely offset from the feed inlet 1012 to obtain a set volume of granular formulation. Maintaining the distance between the first dispensing plate 103 and the second dispensing plate 104, they move synchronously towards the discharge port 1021 so that the granular formulation flows out of the cavity 114 from the discharge port 1021 and into the receiving container. Maintaining the distance between the first dispensing plate 103 and the second dispensing plate 104, they continue to move until all the granular formulation in the cavity 114 has flowed out. After all the granular formulation in the cavity 114 has flowed out, the first dispensing plate 103 stops sliding, and the second dispensing plate 104 continues to slide towards the first dispensing plate 103, so that the first dispensing plate 103 and the second dispensing plate 104 are in contact. The first dispensing plate 103 and the second dispensing plate 104 remain in contact and move back to their initial position until they return to their initial position, preparing for the next round of dispensing.

[0070] Preferably, in this embodiment, the initial position is the position where the end of the first adjusting plate 103 near the second adjusting plate 104 is flush with the end of the discharge port 1021 away from the inlet port 1012.

[0071] Preferably, in this embodiment, a funnel structure is provided between the bottle mouth and the feed inlet 1012, and the number of funnel structures is the same as the number of feed inlets 1012. The bottle mouth and the feed inlet 1012 are connected by the funnel structure.

[0072] More preferably, the upper end of the plurality of funnel structures divides the bottle opening into equal parts, and the lower end is adapted to the shape of each feed inlet 1012, thereby ensuring the uniformity of the discharge speed of each feed inlet 1012.

[0073] Example 2

[0074] like Figure 1 , Figures 7 to 12 As shown, in this embodiment, the driving mechanism 2 includes a housing 201 and a driving assembly installed inside the housing 201. A placement plate 202 is installed on the top of the housing 201 of the driving mechanism 2. A placement groove 2021 is provided on the placement plate 202. The shape of the placement groove 2021 is adapted to the shape of the dispensing mechanism 1. The dispensing mechanism 1 is detachably installed in the placement groove 2021. In this embodiment, by setting the dispensing mechanism 1 to be detachably installed on the driving mechanism 2, when installing the dispensing bottle 3, the dispensing mechanism 1 can be removed from the driving mechanism 2 and installed on the bottle mouth of the dispensing bottle 3. Then, the dispensing mechanism 1 and the dispensing bottle 3 are installed together on the driving mechanism 2. The dispensing mechanism 1 can seal the bottle mouth of the dispensing bottle 3 to prevent the granular preparation inside the dispensing bottle 3 from spilling during the inversion process, which facilitates the installation of the dispensing bottle 3.

[0075] like Figure 3 and Figure 6 As shown, in this embodiment, the dispensing mechanism 1 is further provided with a return spring 105 for driving the dispensing plate to close the inlet 1012 and / or the outlet 1021. Specifically, the two ends of the groove 113 between the outlet plate 102 and the inlet plate 101 are closed, and the first dispensing plate 103 and the second dispensing plate 104 can slide back and forth in the groove 113. The return spring 105 is disposed between the side of the second dispensing plate 104 away from the first dispensing plate 103 and the groove wall of the groove 113. Initially, the second dispensing plate 104 is in contact with the first dispensing plate 103 under the elastic force of the return spring 105, and the first dispensing plate 103 abuts against the groove wall at the end of the groove 113. At this time, the second dispensing plate 104 simultaneously closes the outlet 1021 and the inlet 1012 to prevent leakage of the granular preparation in the dispensing bottle 3.

[0076] Preferably, in this embodiment, a guide rod is inserted into the inner side of the groove wall of the slide 113 away from the first dispensing plate 103, and one end of the return spring 105 is sleeved on the guide rod; a blind hole is provided on the end face of the second dispensing plate 104 away from the first dispensing plate 103, and the other end of the return spring 105 extends at least partially into the blind hole. By providing the guide rod and the blind hole, the stability of the return spring 105 installation, the reliability of its operation, and the service life of the device can be improved. More preferably, multiple return springs 105 are arranged in parallel to improve the reliability of the dispensing mechanism 1.

[0077] In this embodiment, the housing 201 includes a base plate, two oppositely arranged side plates, and a top plate connected to the top of the side plates. The drive assembly is mounted on the base plate. The placement plate 202 is fixed to one end of the top of the side plate by bolts / screws and extends horizontally. One end of the placement plate 202 is suspended in the air. The placement groove 2021 is disposed on the suspended end of the placement plate 202, and the bottom of the dispensing mechanism 1 is at least partially embedded in the placement groove 2021.

[0078] In this embodiment, the dispensing mechanism 1 is embedded in the placement groove 2021 from top to bottom, and a positioning device is provided between the placement groove 2021 and the dispensing mechanism 1.

[0079] The positioning device includes a mortise and tenon 112 and a tenon 211 that cooperate with each other. Both the mortise and tenon 112 and the tenon 211 extend along the installation direction of the adjusting mechanism 1, that is, they extend vertically. The tenon 211 and the mortise and tenon 112 are set on the outer peripheral wall of the adjusting mechanism 1 and / or on the groove wall of the placement groove 2021. During the installation of the adjusting mechanism 1, the tenon 211 is inserted into the mortise and tenon 112. On the one hand, this can improve the installation stability of the adjusting mechanism 1. On the other hand, it can improve the positioning effect between the adjusting mechanism 1 and the driving mechanism 2, and ensure the accuracy of the assembly angle of the adjusting mechanism 1.

[0080] Preferably, in this embodiment, the mortise 112 is disposed on the side wall of the adjusting mechanism 1, and the tenon 211 is disposed on the groove wall of the placement groove 2021. Alternatively, the adjusting mechanism 1 has a mortise 112 on one side and a tenon 211 on the other side, and the groove wall of the placement groove 2021 is provided with a corresponding tenon 211 and mortise 112, thereby ensuring the accuracy of the installation angle of the adjusting mechanism 1.

[0081] Preferably, in this embodiment, the extension length of the tenon 211 and / or mortise 112 on the side wall of the adjusting mechanism 1 is the same as the groove depth of the placement groove 2021. More preferably, the depth of the placement groove 2021 is at least greater than the height of the feeding plate, that is, the feeding plate 101 is at least partially embedded in the placement groove 2021.

[0082] Preferably, in this embodiment, the positioning device further includes a reed switch 209 and a magnet 108 that sense each other. A magnet 108 is embedded in one side wall of the adjusting mechanism 1 and the groove wall of the placement groove 2021, and a reed switch 209 is embedded in the other side wall of the driving mechanism 2 and the groove wall of the placement groove 2021; the reed switch 209 senses the position of the magnet 108 to calibrate the relative position between the driving mechanism 2 and the adjusting mechanism 1.

[0083] In this embodiment, the magnet 108 is embedded in the side wall of the dispensing mechanism 1 from the inside out. The side wall of the dispensing mechanism 1 is also provided with a sensing hole that connects to the outside of the side wall. The reed switch 209 is disposed on the placement plate 202 at a position corresponding to the sensing hole.

[0084] Preferably, the reed switch 209 is a normally open reed switch 209. An indicator light is connected in series with the circuit containing the reed switch 209. Before the adjusting mechanism 1 is placed, the two reeds of the reed switch 209 are separated, the circuit is open, and the indicator light is off. When the adjusting mechanism 1 is placed at the correct angle, the two reeds of the reed switch 209 are attracted, the circuit is closed, and the indicator light illuminates. Alternatively, the reed switch 209 is a normally closed reed switch 209. Before the adjusting mechanism 1 is placed, the circuit is closed, and the indicator light is always on. When the adjusting mechanism 1 is installed at the correct angle, the two reeds of the reed switch 209 are separated, the circuit is open, and the indicator light goes out. Specifically, the magnet 108 and the reed switch 209 induce each other, causing the two reeds of the reed switch 209 to form the same or different magnetic fields, thereby opening or closing the circuit.

[0085] Further preferably, when the adjusting mechanism 1 is correctly positioned, the two reeds of the reed switch 209 are attracted together. If the indicator light does not illuminate after the adjusting mechanism 1 is installed, it indicates that the installation angle of the adjusting mechanism 1 is incorrect, thereby calibrating the relative position between the drive mechanism 2 and the adjusting mechanism 1. Preferably, the reed switch 209 is disposed on the side of the placement slot 2021 near the housing 201 of the drive device.

[0086] Preferably, in this embodiment, the dispensing mechanism 1 is further equipped with a chip 106, which can specifically be an RFID chip. The chip 106 contains the drug information of the granular preparation stored in the dispensing bottle 3. An RFID reader is provided on the placement slot 2021 to sense the chip 106 and read the drug information within it. Specifically, the chip 106 is detachably installed at the bottom of the dispensing mechanism 1 via a cover plate 107 fitted into the bottom of the dispensing mechanism 1, with the bottom surface of the cover plate 107 flush with the bottom surface of the dispensing mechanism 1. After the operator replenishes the granular preparation into the dispensing bottle 3, the drug information of the granular preparation in the dispensing bottle 3 is written into the chip 106. After the dispensing mechanism 1 is installed, the reader 210 of the driving mechanism 2 automatically identifies the drug information of the granular preparation in the dispensing bottle 3. The drug information includes, but is not limited to, the type and weight of the granular preparation.

[0087] Preferably, in this embodiment, the dispensing bottle 3 is configured with multiple bottles for holding the same or different granular preparations. Each dispensing bottle 3 is provided with a corresponding chip 106 for writing the drug information stored in it. When the operator replaces the dispensing bottle 3, the chip 106 at the bottom of the dispensing mechanism 1 needs to be replaced accordingly, thereby improving the working efficiency of the device.

[0088] In this embodiment, the overall shape of the dispensing mechanism 1 is a cylinder or a square prism, preferably a square prism. The bottom of the placement slot 2021 is hollowed out, the driving component is connected to the bottom of the dispensing mechanism 1 for transmission, and the card reader 210 is located at one corner of the bottom of the placement slot 2021.

[0089] In this embodiment, the replacement process of the dispensing bottle 3 of the granule dosage dispensing device is as follows:

[0090] When the remaining amount of granules in dispensing bottle 3 is insufficient, remove dispensing bottle 3 along with dispensing mechanism 1 from driving mechanism 2. Place dispensing bottle 3 with its opening facing upwards, then remove dispensing mechanism 1 from the opening of dispensing bottle 3 and remove chip 106 from the bottom of dispensing mechanism 1. Take a new dispensing bottle 3 filled with granules, open its opening, and place it with the opening facing upwards. Then install dispensing mechanism 1 at the opening of dispensing bottle 3 and install the corresponding chip 106 of the new dispensing bottle 3 at the bottom of dispensing mechanism 1. At this time, dispensing mechanism 1 can seal the opening of dispensing bottle 3. Finally, install dispensing mechanism 1 together with dispensing bottle 3 onto driving mechanism 2. During installation, ensure that the installation angle of dispensing mechanism 1 is accurate. After installation, the indicator light of the circuit where reed switch 209 is located will light up, and card reader 210 will automatically read the drug information in chip 106.

[0091] Example 3

[0092] like Figures 1 to 9 As shown in this embodiment, the driving components inside the housing 201 of the driving mechanism 2 include a first motor 203 and a second motor 204. The first motor 203 and the second motor 204 are respectively connected to the first dispensing plate 103 and the second dispensing plate 104 through the first lead screw and nut assembly 205 and the second lead screw and nut assembly 206. The quantitative dispensing device realizes the dispensing function by controlling the operation of the first motor 203 and the second motor 204, and drives the dispensing mechanism 1 to quantitatively dispense the granular preparation contained in the dispensing bottle 3.

[0093] Specifically, the first motor 203 and the second motor 204 are respectively fixedly mounted on the bottom plate of the housing 201 by bolts. The first motor 203 and the second motor 204 are arranged side by side. The output ends of the first motor 203 and the second motor 204 are respectively connected to the first lead screw and the second lead screw of the first lead screw nut assembly 205 and the second lead screw nut assembly 206 through a coupling. The ends of the first lead screw and the second lead screw are respectively axially limited and mounted on the bottom plate of the housing 201 by brackets and bearings. The first nut and the second nut are respectively circumferentially limited and mounted on the bottom plate of the housing 201 by slide rails. The first lead screw and the first nut are respectively threadedly connected, and the second lead screw and the second nut are respectively threadedly connected.

[0094] A first push rod 207 and a second push rod 208 are respectively installed on the first nut and the second nut. Both the first push rod 207 and the second push rod 208 extend below the placement groove 2021 and are respectively connected to the first adjustment plate 103 and the second adjustment plate 104 of the adjustment mechanism 1. The first motor 203 and the second motor 204 drive the first lead screw and the second lead screw of the first lead screw nut assembly 205 and the second lead screw nut assembly 206 to rotate, thereby causing the first nut and the second nut to translate. The first nut and the second nut push the first adjustment plate 103 and the second adjustment plate 104 to translate through the first push rod 207 and the second push rod 208, respectively.

[0095] Preferably, the discharge plate 102 is provided with a guide groove 111 extending along the extension direction of the slide groove 113. The bottom of the first adjusting plate 103 and the second adjusting plate 104 are respectively provided with a driving block 109 protruding into the guide groove 111 and slidingly engaging with the groove wall of the guide groove 111. The bottom of the driving block 109 is provided with a driving hole 110. The first nut of the first lead screw nut assembly 205 is connected to the driving hole 110 on the first adjusting plate 103 through the first push rod 207. The second nut of the second lead screw nut assembly 206 is connected to the driving hole 110 on the second adjusting plate 104 through the second push rod 208.

[0096] In this embodiment, the first dispensing plate 103 has a first position and a second position. In the first position, the end face of the first dispensing plate 103 near the second dispensing plate 104 is aligned with the side of the discharge port 1021 away from the reset spring 105. In the second position, the end face of the first dispensing plate 103 near the second dispensing plate 104 is aligned with the side of the feed port 1012 away from the reset spring 105. The first motor 203 drives the first dispensing plate 103 to slide between the first position and the second position.

[0097] Preferably, the drive mechanism 2 and / or the dispensing mechanism 1 are further provided with photoelectric switches for identifying the moving positions of the first dispensing plate 103 and the second dispensing plate 104. Specifically, the photoelectric switches are disposed in the housing 201 of the drive mechanism 2, and obtain the positions of the first dispensing plate 103 and the second dispensing plate 104 by sensing the positions of the first nut and the second nut, so as to control the start and stop of the first motor 203 and the second motor 204.

[0098] In this embodiment, the operation process of the granule dosage form quantitative dispensing device is as follows:

[0099] Initially, the first dispensing plate 103 is located in the first position, and the second dispensing plate 104 is attached to the first dispensing plate 103. When it is necessary to dispense the granular preparation in the dispensing bottle 3, the first motor 203 drives the first dispensing plate 103 to slide in the first direction, and the second motor 204 drives the second dispensing plate 104 to slide in the first direction. At the same time, the second dispensing plate 104 slides a certain distance relative to the first dispensing plate 103 in the first direction, so that a cavity 114 is formed between the first dispensing plate 103 and the second dispensing plate 104. The granular preparation in the dispensing bottle 3 falls into the cavity 114 from the feed port 1012. The first motor 203 and the second motor 204 drive the first dispensing plate 103 and the second dispensing plate 104 to slide synchronously in the second direction, thereby causing the cavity 114 to slide in the second direction. When the first dispensing plate 103 slides to the first position, the first dispensing plate 103 stops sliding, and the second dispensing plate 104 continues to slide in the second direction until it is in contact with the first dispensing plate 103. During this process, all the granular preparations in the cavity 114 leak out from the discharge port 1021.

[0100] In this embodiment, the first direction is the direction extending from the discharge port 1021 to the inlet port 1012, and the second direction is the direction extending from the inlet port 1012 to the discharge port 1021. The distance that the second dispensing plate 104 moves relative to the first dispensing plate 103 in the first direction is determined by the volume of the cavity 114, that is, by the single dispensing amount preset by the dispensing mechanism 1.

[0101] Preferably, in this embodiment, after the first dispensing plate 103 moves to the first position, the second dispensing plate 104 moves a certain distance in the second direction and then moves in the first direction, so that the second dispensing plate 104 moves back and forth multiple times, thereby ensuring that all the granular preparation in the cavity 114 is discharged and improving the dispensing accuracy.

[0102] Example 4

[0103] like Figures 1 to 7 , Figures 10 to 12 As shown, in this embodiment, the driving assembly within the housing 201 of the driving mechanism 2 includes a motor 214 and a spring 217. The motor 214 is driven by the second lead screw and nut assembly 206 and is used to drive the second dispensing plate 104 to move in a first direction or a second direction. The spring 217 is driven by the first lead screw and nut assembly 205 and is used to drive the first dispensing plate 103 to move in the first direction. The motor 214 is also driven by the first lead screw and nut assembly 205 and is used to drive the first dispensing plate 103 to move in the second direction. Simultaneously, it winds and stores power for the spring 217. The difference between this embodiment and Embodiment 3 is that in this embodiment, the quantitative dispensing device only needs to control the operation of one motor 214 to drive the dispensing mechanism 1 to complete the entire dispensing process, thereby simplifying the control system and control process of the quantitative dispensing device and reducing the operational difficulty and error rate of the device.

[0104] Specifically, the output end of the motor 214 is connected to a drive shaft via a coupling. The drive shaft is mounted on the base plate of the housing 201 via bearings. A first driving gear and a second driving gear are mounted on the drive shaft. A first driven gear is mounted on the end of the first lead screw, and a second driven gear is mounted on the end of the second lead screw. The first driven gear and the second driven gear mesh with the first driving gear and the second driving gear, respectively, to form a first transmission gear set 212 and a second transmission gear set 213. The motor 214 drives the first lead screw to rotate unidirectionally through the first transmission gear set 212, and the motor 214 drives the second lead screw to rotate bidirectionally through the second transmission gear set 213.

[0105] The spring 217 is located at the end of the first lead screw away from the first driven gear. One end of the spring is connected to the first lead screw, and the other end is connected to the housing 201. When the spring force of the spring 217 is released, it can drive the first lead screw to rotate, thereby driving the first adjusting plate 103 to move in the first direction.

[0106] In this embodiment, the first drive gear of the first transmission gear set 212 is connected to the drive shaft via a one-way bearing 215, and the second drive gear is keyed to the drive shaft.

[0107] For example, when the drive shaft rotates forward, it drives the second drive gear to rotate forward, which in turn drives the second lead screw to rotate in the opposite direction, causing the second adjusting plate 104 to move in the first direction. During this process, the first drive gear does not rotate with the drive shaft, and the driving force of the motor 214 cannot be transmitted to the first lead screw. The first lead screw rotates in the opposite direction under the drive of the spring 217, driving the first adjusting plate 103 to move in the first direction. When the drive shaft rotates in the opposite direction, it drives the second drive gear to rotate in the opposite direction, which in turn drives the second lead screw to rotate forward. At the same time, the drive shaft drives the first drive gear to rotate in the opposite direction, which in turn drives the first lead screw to rotate forward, thus enabling the motor 214 to drive the first adjusting plate 103 and the second adjusting plate 104 to move synchronously in the second direction. When the first lead screw rotates forward, the spring 217 is wound and stores power.

[0108] Preferably, in this embodiment, the first lead screw nut assembly 205 and the second lead screw nut assembly 206 are arranged in parallel, and their pitch and direction of rotation are the same, and the transmission ratio of the first transmission gear set 212 and the second transmission gear set 213 is the same.

[0109] In this embodiment, the feed inlet 1012 and the discharge outlet 1021 are staggered. The first dispensing plate 103 is disposed on the side of the feed inlet 1012 near the discharge outlet 1021, and the second dispensing plate 104 is disposed on the side of the first dispensing plate 103 near the feed inlet 1012. The first dispensing plate 103 has a first position and a second position. The first position is when the end face of the first dispensing plate 103 near the second dispensing plate 104 is aligned with the side of the discharge outlet 1021 away from the feed inlet 1012. The second position is when the end face of the first dispensing plate 103 near the second dispensing plate 104 is aligned with the side of the feed inlet 1012 near the discharge outlet 1021.

[0110] The driven gear of the first transmission gear set 212 is connected to the first lead screw via a torque limiter 216. Specifically, the inner layer of the torque limiter 216 is circumferentially limited to the first lead screw, and the driven gear of the first transmission gear set 212 is circumferentially limited to the outer layer of the torque limiter 216.

[0111] Initially, the first adjusting plate 103 is in the first position. When the motor 214 drives the first adjusting plate 103 to move in the second direction and return to the first position, the mainspring 217 is fully wound. At this time, the elastic force of the mainspring 217 is equal to the maximum frictional force between the inner and outer layers of the torque limiter 216. When the motor 214 continues to drive the first driving gear to rotate in the reverse direction, the first driven gear rotates in the forward direction. The inner layer of the torque limiter 216 remains stationary, while only the outer layer follows the rotation of the first driven gear. That is, the torque limiter 216 is in a slipping state. During this process, the first adjusting plate 103 stops moving, while only the second adjusting plate 104 continues to slide in the second direction.

[0112] Preferably, in this embodiment, the maximum frictional force between the inner and outer layers of the torque limiter 216 is less than or equal to the elastic force when the mainspring 217 is fully wound. More preferably, the maximum frictional force between the inner and outer layers of the torque limiter 216 is less than the elastic force when the mainspring 217 is fully wound. That is, when the first adjusting plate 103 slides to the first position, the mainspring 217 is not fully wound and still has some leeway. However, at this time, the elastic force provided by the mainspring 217 has reached the maximum frictional force between the inner and outer layers of the torque limiter 216. The outer layer of the torque limiter 216 can no longer drive the inner layer of the torque limiter 216 to rotate, and the inner and outer layers of the torque limiter 216 begin to slip.

[0113] In this embodiment, the torque limiter 216 is specifically a friction torque limiter.

[0114] Preferably, in this embodiment, a limiting structure is provided between the first dispensing plate 103 and the groove wall of the slide 113. The limiting structure includes a limiting groove 115 and a limiting protrusion 116 that cooperate with each other. The limiting groove 115 is disposed on one of the side wall of the first dispensing plate 103 and the groove wall of the slide 113 and extends along the sliding direction of the first dispensing plate 103. The limiting protrusion 116 is disposed on the other side wall of the first dispensing plate 103 and the groove wall of the slide 113 and extends at least partially into the limiting groove 115 for abutting against the limiting groove 115 when the first dispensing plate 103 slides to the first position and / or the second position.

[0115] Preferably, the limiting groove 115 is disposed on the first adjusting plate 103, and the limiting protrusion 116 is disposed on the groove wall of the sliding groove 113. When the first adjusting plate 103 moves to the first position, the first adjusting plate 103 abuts against the groove wall of the sliding groove 113 at the end away from the second adjusting plate 104, and / or the groove wall of the limiting groove 115 at the end near the second adjusting plate 104 abuts against the limiting protrusion 116; when the first adjusting plate 103 moves to the second position, the groove wall of the limiting groove 115 at the end away from the second adjusting plate 104 abuts against the limiting protrusion 116. More preferably, when the first adjusting plate 103 moves to the first position, the first adjusting plate 103 abuts against the groove wall of the sliding groove 113 at the end away from the second adjusting plate 104, and simultaneously, the groove wall of the limiting groove 115 at the end near the second adjusting plate 104 abuts against the limiting protrusion 116.

[0116] In this embodiment, the operation process of the granule dosage form quantitative dispensing device is as follows:

[0117] Initially, the first dispensing plate 103 is in the first position, the second dispensing plate 104 is attached to the first dispensing plate 103, and the spring 217 is wound. When it is necessary to dispense the granular preparation in the dispensing bottle 3, the motor 214 drives the second dispensing plate 104 to slide in the first direction. At the same time, the spring 217 is released, and the spring 217 drives the first dispensing plate 103 to slide in the first direction. When the first dispensing plate 103 reaches the second position, the movement stops. When the second dispensing plate 104 moves to a preset position, the movement stops. During this process, the second dispensing plate 104 moves a preset distance in the first direction relative to the first dispensing plate 103. The preset distance is determined by the volume of the cavity 114, that is, by the preset single dispensing volume of the dispensing mechanism 1. Granular formulations fall into cavity 114 through inlet 1012. After cavity 114 is filled, motor 214 reverses direction, driving the first dispensing plate 103 and the second dispensing plate 104 to move synchronously in the second direction. When the first dispensing plate 103 returns to the first position, torque limiter 216 begins to slip, and motor 214 drives the second dispensing plate 104 to continue moving in the second direction until the second dispensing plate 104 comes into contact with the first dispensing plate 103.

[0118] In this embodiment, the first direction is the direction from the first position of the first dispensing plate 103 to the second position, and the second direction is the direction from the second position of the first dispensing plate 103 to the first position.

[0119] Preferably, in this embodiment, the housing 201 of the drive mechanism 2 is further provided with a photoelectric switch. The photoelectric switch is used to identify the position of the second nut when the second dispensing plate 104 is in contact with the first dispensing plate 103, and the position of the second nut when the second dispensing plate 104 moves to a preset position. It is used to transmit a signal to the control unit of the device when the second dispensing plate 104 moves to be in contact with the first dispensing plate 103 and when the second dispensing plate 104 moves to the preset position, so as to control the motor 214 to stop running.

[0120] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A quantitative dispensing device for granule dosage forms, comprising: The dispensing mechanism (1) includes a first dispensing plate (103) and a second dispensing plate (104); The drive mechanism (2) includes a first lead screw and nut assembly (205) that is drivenly connected to the first adjusting plate (103), and a second lead screw and nut assembly (206) that is drivenly connected to the second adjusting plate (104); characterized in that the drive mechanism (2) further includes: The spring (217) is connected to the first lead screw and is used to drive the first nut to move in the first direction; The motor (214) is connected to the first lead screw and the second lead screw through the first transmission gear set (212) and the second transmission gear set (213), respectively. The first drive gear of the first transmission gear set (212) is connected to the output end of the motor (214) via a one-way bearing (215); The first driven gear of the first transmission gear set (212) is connected to the first lead screw via a torque limiter (216): the inner layer of the torque limiter (216) is circumferentially limited to the first lead screw, and the first driven gear of the first transmission gear set (212) is circumferentially limited to the outer layer of the torque limiter (216). The maximum friction between the inner and outer layers of the torque limiter (216) is less than or equal to the elastic force of the mainspring (217) when it is fully wound. When the motor (214) drives the second nut to move in the first direction, the spring (217) releases its elasticity, driving the first nut to move in the first direction; when the motor (214) drives the second nut to move in the second direction, the first nut moves synchronously in the second direction, and the first lead screw drives the spring (217) to store power.

2. The granule dosage form quantitative dispensing device according to claim 1, characterized in that, The dispensing agency (1) includes: A feed plate (101) has a feed inlet (1012) on it; The discharge plate (102) is located below the feed plate (101), and has discharge ports (1021) arranged alternately with the feed port (1012). A groove (113) with closed ends is provided between the feed plate (101) and the discharge plate (102), and the first adjusting plate (103) and the second adjusting plate (104) are slidably disposed in the groove (113).

3. The granule dosage form quantitative dispensing device according to claim 2, characterized in that, The first adjusting plate (103) is located on the side of the feed inlet (1012) near the discharge outlet (1021), and has the following features: In the first position, the end face of the first adjusting plate (103) near the second adjusting plate (104) is aligned with the side of the discharge port (1021) away from the inlet (1012); In the second position, the end face of the first adjusting plate (103) near the second adjusting plate (104) is aligned with the side of the feed inlet (1012) near the discharge outlet (1021).

4. The granule dosage form quantitative dispensing device according to claim 3, characterized in that, A limiting structure is provided between the first adjusting plate (103) and the groove wall of the chute (113), including: The limiting groove (115) is provided on one of the side wall of the first adjusting plate (103) and the groove wall of the sliding groove (113), and extends along the sliding direction of the first adjusting plate (103). A limiting protrusion (116) is provided on the side wall of the first adjusting plate (103) and the other side of the groove wall of the slide (113), extending at least partially into the limiting groove (115), for abutting against the limiting groove (115) when the first adjusting plate (103) slides to the first position and / or the second position.

5. The granule dosage form quantitative dispensing device according to claim 3, characterized in that, When the first adjusting plate (103) moves to the second position in the first direction, it stops, the spring (217) stops releasing, and the second adjusting plate (104) continues to move a preset distance in the first direction under the drive of the motor (214); When the first adjusting plate (103) moves to the first position in the second direction, it stops moving and the spring (217) stops storing power. The second adjusting plate (104) continues to move in the first direction under the drive of the motor (214) until it is in contact with the first adjusting plate (103).

6. The granule dosage form quantitative dispensing device according to claim 5, characterized in that, It also includes a detection unit for identifying the position of the second nut, which is connected in communication with the motor (214) and is used to control the motor (214) to stop rotating when the second adjusting plate (104) moves to a preset position in the first direction and when the second adjusting plate (104) moves to a second direction and is in contact with the first adjusting plate (103) in the first position.

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