A weight detection device for micro-quantities of medicine

Abstract

The application discloses a weight detection equipment for trace medicine, and relates to the technical field of medicine detection, which comprises a hollow cylinder vertically arranged relative to the ground, and a circular ring table coaxially arranged at the top end of the hollow cylinder. A plurality of electromagnetic compensation weighing sensors are arranged in equidistant annular distribution. Tablets are distributed on each electromagnetic compensation weighing sensor by a tablet dispensing assembly. A certain electromagnetic compensation weighing sensor is taken as an initial point, and the tablet dispensing assembly rotates to distribute tablets. The first electromagnetic compensation weighing sensor receiving the tablets carries out weighing work, and the remaining electromagnetic compensation weighing sensors start weighing work one by one. The tablets on the first electromagnetic compensation weighing sensor completing the weighing work are blown away by an air blowing assembly. When the tablet dispensing assembly rotates to the initial point again, a time of tens of seconds has passed, and the electromagnetic compensation weighing sensor at the initial point has sufficient time to complete zero calibration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medicine detection, and in particular to a weight detection device for trace medicine. BACKGROUND

[0002] Medicine is an essential consumable in today's society, and everyone needs to use medicine when they are sick. With the progress of China's economic strength, the domestic medical level is becoming more and more advanced, and gradually becoming one of the most advanced medical powers in the world. In the process of production and preparation of medicine, it is often necessary to weigh the medicine to determine the dosage of the medicine.

[0003] According to the search, the authorized announcement No. CN211291678U Chinese patent document discloses a miniaturized measuring device, which comprises a control box, a tray is arranged on the top of the control box, the tray is pressed and lowered by the gravity of the medicine itself, the tray drives the left connecting rod and the right connecting rod to move inward, the left connecting rod and the right connecting rod drive the left pressing block and the right pressing block to move inward to compress the horizontal spring, at this time, the two columns on the left pressing block and the right pressing block are close to each other, compressing the two sides of the pressure sensor, the pressure sensor senses the pressure and transmits the pressure to the mainboard, and the mainboard converts the pressure data into weight data and displays it on the display screen. It can also adjust the mainboard through the control button to set different pressure gravity conversion values.

[0004] Based on the prior art and combined with the search, it is found that for trace medicine such as a single medicine tablet, the weight of the medicine tablet is only one to two milligrams. At this time, a high-precision weight sensor is needed for trace detection. The high-precision weight sensor generally selects an electromagnetic compensation weighing sensor. The electromagnetic compensation weighing sensor combines a 24-bit ADC analog-to-digital converter to achieve a millisecond-level response speed. However, the medicine needs to be stably placed on the detection end. Although the electromagnetic compensation sensor has a fast response speed in the 24-bit ADC analog-to-digital converter, the internal balance stabilization time needs three to five seconds. The fastest electromagnetic compensation sensor on the market also needs two to three seconds, and the zero calibration speed also needs several seconds (the object is very light, and the zero calibration needs several seconds. The object is very heavy, and the internal rebalancing needs several seconds to one minute). Therefore, the electromagnetic compensation weighing sensor requires that the object be stable and stationary. Slight vibration of the medicine tablet will affect the detection result. For batch detection, multiple interval times will occur, thereby making the detection time-consuming. SUMMARY

[0005] The purpose of the present application is to provide a weight detection device for trace medicine to solve the problems raised in the background art.

[0006] The technical scheme of the present application is: a weight detection equipment for trace medicine, comprising a hollow cylinder vertically arranged relative to the ground, a circular ring table coaxially arranged at the top end of the hollow cylinder;

[0007] A plurality of electromagnetic compensation load sensors are fixed on the bottom ring surface of the circular ring table and equally and annularly distributed, and the weighing end of the electromagnetic compensation load sensor penetrates through the top ring surface of the circular ring table and is flush with the top ring surface of the circular ring table.

[0008] A plurality of air blowing assemblies are arranged at the inner ring of the circular ring table, and each air blowing assembly corresponds to one electromagnetic compensation load sensor.

[0009] A tablet dispensing assembly is arranged in the central area of the hollow cylinder, a rotating assembly is arranged at the bottom end of the hollow cylinder to rotate the tablet dispensing assembly, the tablet dispensing assembly is rotated to the corresponding electromagnetic compensation load sensor by the rotating assembly, and the tablet dispensing assembly dispenses tablets on the weighing end of the electromagnetic compensation load sensor.

[0010] Preferably, the air blowing assembly comprises an air blowing head and a three-position three-way electromagnetic valve, the air blowing head is fixed to the hollow cylinder, the air blowing end of the air blowing head faces the weighing end of the electromagnetic compensation load sensor, and the A port of the three-position three-way electromagnetic valve is fixed and communicated with the air inlet of the air blowing head.

[0011] Preferably, the first annular pipe and the second annular pipe are fixed in the ring of the circular ring table, the P port of the three-position three-way electromagnetic valve of each air blowing assembly is fixed and communicated with the first annular pipe, the inner side of the first annular pipe leads out a first air pipe which is communicated with the inside of the first annular pipe, the O port of the three-position three-way electromagnetic valve of each air blowing assembly is fixed and communicated with the second annular pipe, and the inner side of the second annular pipe leads out a second air pipe which is communicated with the inside of the second annular pipe.

[0012] Preferably, the air blowing end of the air blowing head is flat, and the air blowing end of the air blowing head is laid on the top ring surface of the circular ring table.

[0013] Preferably, a plurality of index bars are fixed on the top ring surface of the circular ring table and equally and annularly distributed with the central axis of the circular ring table as the center, each index bar divides the top ring surface of the circular ring table into a plurality of fan-shaped grooves, and the weighing end of each electromagnetic compensation load sensor is located at the center line of the fan-shaped groove.

[0014] Preferably, a first collecting hopper and a second collecting hopper are fixed on the outside of the hollow cylinder, the hopper diameter of the first collecting hopper is smaller than the hopper diameter of the second collecting hopper, the first collecting hopper is located in the second collecting hopper, the two are fixed and the neck of the first collecting hopper penetrates through the second collecting hopper, and the neck of the first collecting hopper and the neck of the second collecting hopper are inclined to one side.

[0015] Preferably, the hair piece assembly comprises a plurality of guide rails, the plurality of guide rails are fixed in the respective fan-shaped grooves respectively, the guide rails are inclined downward towards one end of the weighing end of the electromagnetic compensation load sensor, the other end of the guide rails is horizontal, the top of the inclined end of the guide rails is not closed, and the inclined end of the guide rails is located above the weighing end of the electromagnetic compensation load sensor.

[0016] Preferably, the hair piece assembly further comprises a cylinder, the rotating assembly comprises a bottom plate, a gantry, a first bevel gear, a second bevel gear and a stepping motor, the bottom end of the hollow cylinder is fixed with the bottom plate, the two ends of the gantry are fixed on the bottom plate, the top of the gantry is provided with a rotating hole coaxially arranged with the annular table, the whole cylinder is rotatably installed in the rotating hole, the stepping motor is fixed with the gantry, the output shaft of the stepping motor is coaxially fixed with the first bevel gear, the second bevel gear is coaxially fixed with the cylinder, and the first bevel gear is engaged with the second bevel gear.

[0017] Preferably, the bottom end of the cylinder is fixed with a guide shell arranged horizontally and communicated with the cylinder, one end of the guide shell is provided with an outer circular edge, one end of the horizontal end of the guide rail is provided with a flared portion, and one end of the flared portion is provided with an inner circular edge, the diameter of the outer circular edge of the guide shell is consistent with the diameter of the inner circular edge of the flared portion.

[0018] Preferably, the hair piece assembly further comprises a ratchet wheel, an L-shaped plate, a push-out plate, a plurality of flat head columns, a plurality of springs and a rolling column, the ratchet wheel is fixed with the gantry, the ratchet wheel is located in the gantry and coaxially arranged with the cylinder, one end of the plurality of flat head columns is fixed on the outside of the cylinder, one end of the push-out plate is slidingly inserted into the bottom end of the cylinder, the push-out plate is in alignment with the guide shell, one end of the L-shaped plate is slidingly sleeved on each flat head column, a plurality of springs are sleeved on each flat head column, the two ends of the spring are fixed with the flat head end of the flat head column and the L-shaped plate respectively, the L-shaped plate is fixed with the push-out plate, and one end of the rolling column is rotatably installed on the other end of the L-shaped plate.

[0019] The present application improves the weight detection equipment for micro drugs, and has the following improvements and advantages compared with the prior art.

[0020] One: the present application is provided with a plurality of equidistant annular distribution of electromagnetic compensation weighing sensor, tablet through the tablet dispensing assembly in each electromagnetic compensation weighing sensor, a certain electromagnetic compensation weighing sensor as the initial point, the tablet dispensing assembly rotates and distributes, the first received tablet electromagnetic compensation weighing sensor on the tablet weighing work, the rest of the electromagnetic compensation weighing sensor starts weighing work one by one, the first complete weighing of the electromagnetic compensation weighing sensor on the tablet will be blown away by the air blowing assembly, when the tablet dispensing assembly rotates to the initial point again, the initial position has been through several tens of seconds of time, the electromagnetic compensation weighing sensor has sufficient time to complete the zero calibration, thus, the whole detection process can save the waiting electromagnetic compensation weighing sensor stable detection process and automatic zero time, improve the efficiency of batch detection;

[0021] Second: the present application is provided with two hopper diameter inconsistent and both of the neck of the hopper are inclined to one side of the material collecting hopper, the large hopper is the first material collecting hopper, the small hopper is the second material collecting hopper, the first material collecting hopper is located in the second material collecting hopper, both are fixed and the neck of the first material collecting hopper penetrates the first material collecting hopper, the air blowing assembly is provided with two separate high pressure gas sources, the gas pressure of the two high pressure gas sources is inconsistent, the two high pressure gas sources are connected with the first gas pipe and the second gas pipe respectively, the inside of the first annular pipe is filled with the high pressure gas source with small gas pressure, the inside of the second annular pipe is filled with the high pressure gas source with large gas pressure, when the tablet gravity is qualified, the P port and the A port of the three-way electromagnetic valve are communicated, the air blowing head of the air blowing assembly enters the high pressure gas source with small gas pressure, the air blowing head blows the tablet to the hopper of the second material collecting hopper and falls down, the tablet falls down from the neck of the second material collecting hopper, when the tablet gravity is unqualified, the O port and the A port of the three-way electromagnetic valve are communicated, the air blowing head of the air blowing assembly enters the high pressure gas source with large gas pressure, the air blowing head blows the tablet to the hopper of the first material collecting hopper and falls down, the tablet falls down from the neck of the first material collecting hopper, thereby without manual auxiliary discharging. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0024] Figure 2 It is Figure 1 the schematic diagram of the enlarged structure of A;

[0025] Figure 3 It is a schematic diagram of the overall front view structure of the present application;

[0026] Figure 4 It is the first aggregate hopper, second aggregate hopper and circular ring table area first visual angle structure schematic view of the application;

[0027] Figure 5 It is the first aggregate hopper, second aggregate hopper and circular ring table area second visual angle structure schematic view of the application;

[0028] Figure 6 It is Figure 5 The enlarged structure schematic view of B of the application;

[0029] Figure 7 It is the gantry top area three-dimensional structure schematic view of the application;

[0030] Figure 8 It is the hairpiece assembly partial structure schematic view of the application;

[0031] Figure 9 It is the cylindrical section view of the application.

[0032] Reference signs:

[0033] 1, bottom plate; 2, gantry; 3, first aggregate hopper; 4, second aggregate hopper; 5, hollow cylinder; 6, circular ring table; 7, electromagnetic compensation weighing sensor; 8, guide rail; 9, index bar; 10, first annular pipe; 11, first air pipe; 12, second annular pipe; 13, second air pipe; 14, air blowing head; 15, three-position three-way electromagnetic valve; 16, stepping motor; 17, first bevel gear; 18, second bevel gear; 19, cylinder; 20, L-shaped plate; 21, guide shell; 22, push-out plate; 23, flat head column; 24, spring; 25, ratchet wheel; 26, rolling column. DETAILED DESCRIPTION

[0034] The application will be described in detail below, and the technical solutions in the embodiments of the application will be clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0035] The application provides a weight detection device for micro drugs by improvement, and the technical solutions of the application are:

[0036] As shown in Figures 1 to 9 The embodiments of the application provide a weight detection device for micro drugs, which comprises a hollow cylinder 5 vertically arranged relative to the ground, and a circular ring table 6 coaxially arranged at the top end of the hollow cylinder 5.

[0037] The bottom ring surface of the circular ring table 6 is fixed with a plurality of electromagnetic compensation weighing sensors 7 distributed in equidistant annular form, and the weighing ends of the electromagnetic compensation weighing sensors 7 penetrate through and are flush with the top ring surface of the circular ring table 6;

[0038] A plurality of air blowing assemblies are arranged at the inner ring of the circular ring table 6, and each air blowing assembly corresponds to one electromagnetic compensation weighing sensor 7;

[0039] A tablet dispensing assembly is arranged in the central area of the inner cylinder of the hollow cylinder 5, and the bottom end of the hollow cylinder 5 is provided with a rotating assembly for rotating the tablet dispensing assembly, and the tablet dispensing assembly is rotated to the corresponding electromagnetic compensation weighing sensor 7 by the rotating assembly and dispenses tablets on the weighing end of the electromagnetic compensation weighing sensor 7;

[0040] Through the above connection relationship, it can be known that a plurality of electromagnetic compensation weighing sensors 7 are arranged in equidistant annular form, tablets are dispensed on each electromagnetic compensation weighing sensor 7 by the tablet dispensing assembly, and the tablet dispensing assembly rotates to dispense tablets, the first electromagnetic compensation weighing sensor 7 that receives the tablet weighs the tablet, and the remaining electromagnetic compensation weighing sensors 7 start the weighing work one by one, the tablet on the first electromagnetic compensation weighing sensor 7 that completes the weighing is blown away by the air blowing assembly, and when the tablet dispensing assembly rotates to the initial point again, the electromagnetic compensation weighing sensor 7 at the initial point has sufficient time to complete the zero calibration after a period of time of tens of seconds, so it can be known that the whole detection process can save the stable detection process and the automatic zero calibration time of the electromagnetic compensation weighing sensor 7, and the efficiency of batch detection is improved.

[0041] Specifically, the air blowing assembly includes an air blowing head 14 and a three-position three-way electromagnetic valve 15, the air blowing head 14 is fixed with the hollow cylinder 5, the air blowing end of the air blowing head 14 faces the weighing end of the electromagnetic compensation weighing sensor 7, the A port of the three-position three-way electromagnetic valve 15 is fixed and communicated with the air inlet of the air blowing head 14, the first annular pipe 10 and the second annular pipe 12 are fixed in the ring of the circular ring table 6, the P port of the three-position three-way electromagnetic valve 15 of each air blowing assembly is fixed and communicated with the first annular pipe 10, the inner side of the first annular pipe 10 leads out a first air pipe 11 communicated with the inside thereof, the O port of the three-position three-way electromagnetic valve 15 of each air blowing assembly is fixed and communicated with the second annular pipe 12, the inner side of the second annular pipe 12 leads out a second air pipe 13 communicated with the inside thereof, the first collecting hopper 3 and the second collecting hopper 4 are fixed on the outside of the hollow cylinder 5, the hopper diameter of the first collecting hopper 3 is smaller than the hopper diameter of the second collecting hopper 4, the first collecting hopper 3 is located in the second collecting hopper 4, and the two are fixed and the neck of the first collecting hopper 3 penetrates through the second collecting hopper 4, and the necks of the first collecting hopper 3 and the second collecting hopper 4 are inclined to one side;

[0042] It should be noted that the specific model of the three-position three-way electromagnetic valve 15 needs to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail, and the power supply of the three-position three-way electromagnetic valve 15 and its principle are clear to those skilled in the art, and will not be described in detail here.

[0043] It should be noted that the entire device is also provided with two independent air compressors, and the two air compressors output two different high-pressure air sources, and the air pressures of the two high-pressure air sources are inconsistent. The two high-pressure air sources are connected with the first air pipe 11 and the second air pipe 13 respectively, the inside of the first annular pipe 10 is filled with a high-pressure air source with a small air pressure, and the inside of the second annular pipe 12 is filled with a high-pressure air source with a large air pressure. The specific model of the air compressor needs to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail, and the power supply of the air compressor and its principle are clear to those skilled in the art, and will not be described in detail here.

[0044] Through the above connection relationship, when the tablet gravity is qualified, the P port of the three-position three-way electromagnetic valve 15 is connected with the A port, the air blowing head 14 of the air blowing assembly will enter the high-pressure air source with a small air pressure, the air blowing head 14 blows the tablets to the hopper of the first collecting hopper 3, and the tablets fall from the neck of the first collecting hopper 3. When the tablet gravity is unqualified, the O port of the three-position three-way electromagnetic valve 15 is connected with the A port, the air blowing head 14 of the air blowing assembly will enter the high-pressure air source with a large air pressure, the air blowing head 14 blows the tablets to the hopper of the second collecting hopper 4, and the tablets fall from the neck of the second collecting hopper 4, so that the tablets can be unloaded without manual assistance.

[0045] It should be noted that when the tablet gravity is unqualified, the O port of the three-position three-way electromagnetic valve 15 is connected with the A port, the air blowing head 14 of the air blowing assembly will enter the high-pressure air source with a large air pressure, the air blowing head 14 blows the tablets to the hopper of the second collecting hopper 4, and the tablets fall from the neck of the second collecting hopper 4. Because the detected tablet gravity is too light or too heavy, in order to reduce the actual calculation of the high-pressure air source with a large air pressure, the edge of the hopper of the second collecting hopper 4 can be extended upward to form a fence, and a high-pressure air source with a large air pressure is directly used. Whether the detected tablet gravity is too light or too heavy, the unqualified tablets will directly collide with the fence, thereby preventing the tablets from being blown into the first collecting hopper 3 or the second collecting hopper 4.

[0046] Specifically, the air blowing end of the air blowing head 14 is provided in a flat shape, and the air blowing end of the air blowing head 14 is laid on the circular ring table 6;

[0047] Through the above connection relationship, the air blowing end of the air blowing head 14 is provided in a flat shape, so that the airflow blown out of the air blowing head 14 is in a layered shape, and such layered airflow can well push the tablets out.

[0048] Specifically, the top ring surface of the circular ring table 6 is fixed with a plurality of index bars 9, and the plurality of index bars 9 are distributed in a ring shape at equal distances with the central axis of the circular ring table 6 as the center, each index bar 9 divides the top ring surface of the circular ring table 6 into a plurality of fan-shaped grooves, and the weighing ends of the plurality of electromagnetic compensation weighing sensors 7 are respectively located at the center lines of the plurality of fan-shaped grooves.

[0049] It can be known from the above connection relationship that, because the plurality of electromagnetic compensation weighing sensors 7 start to work one by one, the air blowing assembly is prevented from affecting the work of the weighing ends of the adjacent electromagnetic compensation weighing sensors 7, and the index bar 9 can isolate the airflow.

[0050] Specifically, the tablet feeding assembly includes a plurality of guide rails 8, the plurality of guide rails 8 are respectively fixed in the plurality of fan-shaped grooves, one end of the guide rail 8 towards the weighing end of the electromagnetic compensation weighing sensor 7 is inclined downward, the other end of the guide rail 8 is in a horizontal state, the top of the inclined end of the guide rail 8 is not closed, and the inclined end of the guide rail 8 is located above the weighing end of the electromagnetic compensation weighing sensor 7.

[0051] It should be noted that the inside of the guide rail 8 is polished to reduce the friction coefficient inside the guide rail 8.

[0052] It can be known from the above connection relationship that, when the tablet enters the guide rail 8 through the pushing force, the tablet slides to above the weighing end of the electromagnetic compensation weighing sensor 7 through the guide rail 8, and then falls on the weighing end of the electromagnetic compensation weighing sensor 7.

[0053] Specifically, the tablet feeding assembly further includes a cylinder 19, the rotating assembly includes the bottom plate 1, the gantry 2, the first bevel gear 17, the second bevel gear 18 and the stepping motor 16, the bottom end of the hollow cylinder 5 is fixed with the bottom plate 1, both ends of the gantry 2 are fixed on the bottom plate 1, a rotating hole coaxially arranged with the circular ring table 6 is arranged on the top of the gantry 2, the cylinder 19 is rotatably installed in the rotating hole, the stepping motor 16 is fixed with the gantry 2, the output shaft of the stepping motor 16 is coaxially fixed with the first bevel gear 17, the second bevel gear 18 is coaxially fixed with the cylinder 19, and the first bevel gear 17 is engaged with the second bevel gear 18.

[0054] It should be noted that the model specifications of the first bevel gear 17, the second bevel gear 18 and the stepping motor 16 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail, and the power supply and principle of the stepping motor 16 are clear to those skilled in the art, which will not be described in detail here.

[0055] From the above connection relationship can be known: the stepper motor 16 through the output shaft to make the first bevel gear 17 slowly rotate, the first bevel gear 17 through the second bevel gear 18 to make the cylinder 19 rotate, the stepper motor 16 through the intermittent rotation form, make the cylinder 19 intermittent rotation of a certain angle.

[0056] Specifically, the bottom end of the cylinder 19 is fixed with a horizontal guide shell 21 which is communicated with it, one end of the guide shell 21 is provided with an outer circle edge, one end of the horizontal end of the guide rail 8 is provided with a flared mouth, and one end of the flared mouth is provided with an inner circle edge, the diameter of the outer circle edge of the guide shell 21 is consistent with the diameter of the inner circle edge of the flared mouth;

[0057] It should be noted that the above, although the diameter of the outer circle edge of the guide shell 21 is consistent with the diameter of the inner circle edge of the flared mouth, in fact, there is a little distance between the two to avoid the feeling of frustration when the two relative rotate;

[0058] From the above connection relationship can be known: when the cylinder 19 rotates, it can drive the guide shell 21 to rotate, the guide shell 21 rotates to the corresponding guide rail 8, at this time the guide shell 21 is aligned with the guide rail 8, when the tablet is bounced into the guide rail 8, the flared mouth setting will make the tablet more easily enter the guide rail 8.

[0059] Specifically, the tablet assembly further comprises a ratchet wheel 25, an L-shaped plate 20, a push-out plate 22, a plurality of flat head columns 23, a plurality of springs 24 and a rolling column 26, the ratchet wheel 25 is fixed with the gantry 2, the ratchet wheel 25 is located in the gantry 2 and is coaxially arranged with the cylinder 19, one end of the plurality of flat head columns 23 is fixed on the outside of the cylinder 19, one end of the push-out plate 22 is slidingly inserted into the bottom end of the cylinder 19, the push-out plate 22 is aligned with the guide shell 21, one end of the L-shaped plate 20 is slidingly sleeved on each flat head column 23, the plurality of springs 24 are sleeved on each flat head column 23, the two ends of the spring 24 are respectively fixed with the flat head end of the flat head column 23 and the L-shaped plate 20, the L-shaped plate 20 is fixed with the push-out plate 22, one end of the rolling column 26 is rotatably installed on the other end of the L-shaped plate 20;

[0060] It should be noted that the above, the model specifications of the ratchet wheel 25, the L-shaped plate 20, the push-out plate 22, the plurality of flat head columns 23, the plurality of springs 24 and the rolling column 26 need to be selected and determined according to the actual specifications of the device;

[0061] It should be further noted that the ratchet angle of the ratchet wheel 25 is ninety degrees;

[0062] Through the above connection relationship can be known: the round tablet-shaped tablet stack placed in the pipe, cylinder 19 intermittent rotation of a certain angle, cylinder 19 on the L-shaped plate 20 with cylinder 19 rotation, L-shaped plate 20 on the top of the rolling column 26 along the ratchet angle of the ratchet 25 rolling, since the ratchet angle of 90 degrees, the rolling column 26 along the ratchet angle oblique side rolling, the spring 24 is compressed at this time, the rolling column 26 off the ratchet angle of the sharp corner, the spring 24 instantaneous release, the rolling column 26 drive L-shaped plate 20 fast to the cylinder 19, L-shaped plate 20 of the push plate 22 will be fast cylinder 19 inside the tablet pop out.

[0063] Working principle:

[0064] First, the round tablet-shaped tablet stack placed in the pipe;

[0065] Second, start the stepper motor 16, electromagnetic sensor and three-way electromagnetic valve 15;

[0066] Among them, the stepper motor 16 through the output shaft makes the first bevel gear 17 slowly rotate, the first bevel gear 17 through the second bevel gear 18 to make the cylinder 19 rotation, the stepper motor 16 through the intermittent rotation form, makes the cylinder 19 intermittent rotation of a certain angle;

[0067] Cylinder 19 intermittent rotation of a certain angle, cylinder 19 on the L-shaped plate 20 with cylinder 19 rotation, L-shaped plate 20 on the top of the rolling column 26 along the ratchet angle of the ratchet 25 rolling, since the ratchet angle of 90 degrees, the rolling column 26 along the ratchet angle oblique side rolling, the spring 24 is compressed at this time, the rolling column 26 off the ratchet angle of the sharp corner, the spring 24 instantaneous release, the rolling column 26 drive L-shaped plate 20 fast to the cylinder 19, L-shaped plate 20 of the push plate 22 will be fast cylinder 19 inside the tablet pop out;

[0068] Cylinder 19 rotation, can drive the guide shell 21 rotation, guide shell 21 rotation to the corresponding guide rail 8, at this time, the guide shell 21 and guide rail 8 alignment, when the tablet is pop into the guide rail 8, the flared setting will make the tablet more easily into the guide rail 8;

[0069] When the tablet through the push force into the guide rail 8, the tablet through the guide rail 8 to the electromagnetic compensation weighing sensor 7 weighing end above, then fall in the electromagnetic compensation weighing sensor 7 weighing end; electromagnetic compensation weighing sensor 7 weighing end weighing work, the stepper motor 16 continues intermittent work;

[0070] Third step, when the tablet gravity qualified, three-position three-way solenoid valve 15 P and A port communication, the air blowing head 14 of air blowing assembly will enter the small pressure of high pressure gas source, air blowing head 14 will be blown to the first hopper 3 of the hopper mouth fall, the tablet from the first hopper 3 of the hopper neck fall, when the tablet gravity unqualified, three-position three-way solenoid valve 15 O and A port communication, the air blowing head 14 of air blowing assembly will enter the big pressure of high pressure gas source, air blowing head 14 will be blown to the second hopper 4 of the hopper mouth fall, the tablet from the second hopper 4 of the hopper neck fall, thereby without manual auxiliary unloading.

[0071] The above description enables one of ordinary skill in the art to make and use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A weight detection device for microdoses of medicine, comprising a hollow cylinder (5) arranged vertically with respect to the ground, characterized in that: The top end of the hollow cylinder (5) is fixed with a coaxial ring table (6); The bottom ring surface of the ring table (6) is fixed with a plurality of electromagnetic compensation weighing sensors (7) which are equally distributed in a ring shape, and the weighing end of the electromagnetic compensation weighing sensor (7) penetrates through the top ring surface of the ring table (6) and is flush with the top ring surface of the ring table (6); A plurality of air blowing assemblies are arranged at the inner ring of the ring table (6), and each air blowing assembly corresponds to one electromagnetic compensation weighing sensor (7); A dispensing assembly is arranged in the central area of the hollow cylinder (5), the bottom end of the hollow cylinder (5) is provided with a rotating assembly for rotating the dispensing assembly, the dispensing assembly is rotated to the corresponding electromagnetic compensation weighing sensor (7) through the rotating assembly, and the tablet is dispensed on the weighing end of the electromagnetic compensation weighing sensor (7); The top ring surface of the ring table (6) is fixed with a plurality of index bars (9), and the index bars (9) are equally distributed in a ring shape with the center axis of the ring table (6) as the center, each index bar (9) divides the top ring surface of the ring table (6) into a plurality of fan-shaped grooves, and the weighing end of each electromagnetic compensation weighing sensor (7) is located at the center line of the fan-shaped groove; The outer side of the hollow cylinder (5) is sleeved and fixed with a first collecting hopper (3) and a second collecting hopper (4), the hopper diameter of the first collecting hopper (3) is smaller than that of the second collecting hopper (4), the first collecting hopper (3) is located in the second collecting hopper (4), and the two are fixed and the neck of the first collecting hopper (3) penetrates through the second collecting hopper (4), the neck of the first collecting hopper (3) and the neck of the second collecting hopper (4) are inclined to one side; The dispensing assembly includes a plurality of guide rails (8), each guide rail (8) is fixed in each fan-shaped groove, one end of the guide rail (8) inclined downward towards the weighing end of the electromagnetic compensation weighing sensor (7), the other end of the guide rail (8) is horizontal, the top of the inclined end of the guide rail (8) is not closed, and the inclined end of the guide rail (8) is located above the weighing end of the electromagnetic compensation weighing sensor (7); The dispensing assembly further includes a cylinder (19), the rotating assembly includes a bottom plate (1), a gantry (2), a first bevel gear (17), a second bevel gear (18) and a stepping motor (16), the bottom end of the hollow cylinder (5) is fixed with the bottom plate (1), both ends of the gantry (2) are fixed on the bottom plate (1), a rotating hole coaxial with the ring table (6) is arranged at the top of the gantry (2), the cylinder (19) is rotatably installed in the rotating hole, the stepping motor (16) is fixed with the gantry (2), the output shaft of the stepping motor (16) is coaxially fixed with the first bevel gear (17), the second bevel gear (18) is coaxially fixed with the cylinder (19), and the first bevel gear (17) is engaged with the second bevel gear (18).

2. The apparatus for detecting the weight of a small amount of medicine according to claim 1, wherein: The air blowing assembly comprises an air blowing head (14) and a three-position three-way electromagnetic valve (15), the air blowing head (14) is fixed with the hollow cylinder (5), the air blowing end of the air blowing head (14) faces the weighing end of the electromagnetic compensation weighing sensor (7), and the A port of the three-position three-way electromagnetic valve (15) is fixed and communicated with the air inlet of the air blowing head (14).

3. The apparatus according to claim 2, wherein: The first annular pipe (10) and the second annular pipe (12) are fixed in the ring of the circular ring table (6), the P port of the three-position three-way electromagnetic valve (15) of each air blowing assembly is fixed and communicated with the first annular pipe (10), the inner side of the first annular pipe (10) leads out a first air pipe (11) communicated with the inside thereof, the O port of the three-position three-way electromagnetic valve (15) of each air blowing assembly is fixed and communicated with the second annular pipe (12), and the inner side of the second annular pipe (12) leads out a second air pipe (13) communicated with the inside thereof.

4. The apparatus for detecting the weight of a small amount of medicine according to claim 2, wherein: The air blowing end of the air blowing head (14) is arranged in a flat shape, and the air blowing end of the air blowing head (14) is laid on the circular ring table (6).

5. The apparatus for detecting the weight of a small amount of medicine according to claim 1, wherein: The bottom end of the cylinder (19) is fixed with a guide shell (21) arranged in a horizontal mode and communicated with the cylinder (19), one end of the guide shell (21) is provided with an outer circular edge, one end of the horizontal end of the guide rail (8) is provided with a flared portion, and one end of the flared portion is provided with an inner circular edge, and the diameter of the outer circular edge of the guide shell (21) is consistent with the diameter of the inner circular edge of the flared portion.

6. The apparatus for detecting the weight of a small amount of medicine according to claim 5, wherein: The hair releasing assembly further comprises a ratchet wheel (25), an L-shaped plate (20), a push-out plate (22), a plurality of flat head columns (23), a plurality of springs (24) and a rolling column (26), the ratchet wheel (25) is fixed with the gantry (2), the ratchet wheel (25) is located in the gantry (2) and coaxially arranged with the cylinder (19), one end of each of the plurality of flat head columns (23) is fixed on the outer side of the cylinder (19), one end of the push-out plate (22) is slidingly inserted into the bottom end of the cylinder (19), the push-out plate (22) is in vertical alignment with the guide shell (21), one end of the L-shaped plate (20) is slidingly sleeved on each flat head column (23), a plurality of springs (24) are sleeved on each flat head column (23), both ends of the spring (24) are fixed with the flat head end of the flat head column (23) and the L-shaped plate (20) respectively, the L-shaped plate (20) is fixed with the push-out plate (22), and one end of the rolling column (26) is rotatably installed on the other end of the L-shaped plate (20).

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