Automatic weighing and filling device for medicine granules

Abstract

The present invention relates to the field of weighing and transporting pharmaceutical granules, specifically to an automatic weighing and filling pharmaceutical granule device, comprising a main frame, a primary pharmaceutical tank, a secondary pharmaceutical tank, a tertiary pharmaceutical tank, a weighing module, a conical guide barrel, and a filling and injecting unit. In the present invention, each level of pharmaceutical tank is equipped with an independent weighing module, and the tertiary pharmaceutical tank can work in parallel with the primary pharmaceutical tank and the secondary pharmaceutical tank, thereby enabling pharmaceutical granule operation, pharmaceutical granule weighing, and pharmaceutical granule filling to proceed in parallel, effectively improving work efficiency, and maximizing the adaptability and flexibility of the entire device to meet functional requirements under different working conditions. The present invention has good explosion-proof safety, and the pharmaceutical granule material can be kept from contacting the external environment during the entire weighing and filling process. At the same time, waste gas, dust, etc. can be transmitted to a designated location through a specific pipeline for unified treatment, which not only ensures safety but also meets environmental protection requirements.

Description

Technical Field

[0001] The invention relates to the technical field of weighing and transporting medicine granules, in particular to an automatic medicine granule weighing and filling device. Background Art

[0002] Current automated granular material weighing and filling equipment typically receives granular material from an upper material outlet, accurately weighs the granules through its own mechanism, and then fills them into a pre-placed medicine container at the lower end. However, within the entire device, granule transportation, weighing, and filling are all performed separately, requiring different equipment to perform different functions. This results in fragmented equipment and makes it difficult to manage them in a unified and parallel manner, hindering efficiency. Summary of the Invention

[0003] Aiming at the problem that traditional granular material weighing and filling devices cannot meet the requirements of weighing and filling in parallel and have low efficiency, the purpose of the present invention is to provide an automatic weighing and filling device for granular materials.

[0004] The object of the present invention is achieved through the following technical solutions:

[0005] An automatic weighing and filling device for medicine pellets, comprising a main frame, a primary medicine tank, a secondary medicine tank, a tertiary medicine tank, a weighing module, a conical guide barrel, and a filling and injecting unit;

[0006] A plurality of external connection seats A are evenly arranged on the outer circumference of the first-level medicine-containing tank body in the circumferential direction, and each external connection seat A of the first-level medicine-containing tank body is connected to the main frame through one of the weighing modules. A plurality of external connection seats B are evenly arranged on the outer circumferential surface of the second-level medicine-containing tank body in the circumferential direction, and each external connection seat B of the second-level medicine-containing tank body is connected to the main frame through one of the weighing modules. A plurality of external connection seats C are evenly arranged on the outer circumferential surface of the tertiary medicine-containing tank body in the circumferential direction, and each external connection seat C of the tertiary medicine-containing tank body is connected to the main frame through one of the weighing modules. The first-level medicine-containing tank body, the second-level medicine-containing tank body, and the third-level medicine-containing tank body are arranged in order from top to bottom on the main frame;

[0007] A first-level feed port is provided on the top surface of the first-level medicine tank body, a first-level discharge port is provided at the bottom end of the first-level medicine tank body, and the first-level discharge port of the first-level medicine tank body is connected to the upper end of the transfer pipe A;

[0008] The conical guide barrel has openings at both ends, the upper end opening of the conical guide barrel is larger than the lower end opening of the conical guide barrel, the upper end opening of the conical guide barrel is connected to the lower end of the transfer tube A, and the lower end opening of the conical guide barrel is connected to the upper end of the pinch valve A;

[0009] A secondary feed port is provided on the top surface of the secondary medicine storage tank body, and a secondary discharge port is provided at the bottom end of the secondary medicine storage tank body. The secondary feed port of the secondary medicine storage tank body is connected to the lower end of the pinch valve A, and the secondary discharge port of the secondary medicine storage tank body is connected to the upper end of the pinch valve B, and the lower end of the pinch valve B is connected to the upper end of the transfer pipe B;

[0010] A third-level feed port is provided on the top surface of the three-level medicine storage tank body, and a third-level discharge port is provided at the bottom end of the three-level medicine storage tank body. The third-level feed port of the three-level medicine storage tank body is connected to the lower end of the transfer pipe B, and the third-level discharge port of the three-level medicine storage tank body is connected to the upper end of the pinch valve C, and the lower end of the pinch valve C is connected to the upper end of the transfer pipe C.

[0011] The filling and injecting unit has a material input end and a material output end. The material input end of the filling and injecting unit is connected to the lower end of the transfer tube C. The filling and injecting unit is used to fill the material into the medicine container.

[0012] Several branch ports are also provided on the outer peripheral surface of the conical guide barrel, each of the branch ports is connected to one end of a branch feeding pipe, and the other end of each branch feeding pipe is connected to the upper end of a corresponding pinch valve D. Feed ports are respectively provided on the top surface of the secondary medicine storage tank body corresponding to the lower end of each pinch valve D, and each feeding port of the secondary medicine storage tank body is respectively connected to the lower end of a corresponding pinch valve D, and the caliber of each pinch valve D is smaller than the caliber of the pinch valve A.

[0013] The transfer tube A, transfer tube B and transfer tube C are all made of hoses.

[0014] An automatic weighing and filling device for medicine pellets of the present invention is also provided with an air-cutting protection unit, which includes an upper mounting base, two groups of cooperating clamping cylinders A and clamping plates. The upper mounting base is mounted on the main frame and is located between the first-level medicine storage tank body and the second-level medicine storage tank body. The cylinder bodies of the two groups of clamping cylinders A are respectively arranged on the upper mounting base, and the two groups of clamping cylinders A are symmetrically located on both sides of the transfer tube A. Each group of clamping plates is respectively mounted on the driving ends of the clamping cylinders A of the same group; when the driving ends of the two groups of clamping cylinders A are retracted, the clamping plates of the two groups are respectively away from the transfer tube A; when the driving ends of the two groups of clamping cylinders A are extended, the clamping plates of the two groups clamp the transfer tube A.

[0015] The clamping cylinders A of each group are respectively installed on the upper mounting base through a corresponding cylinder mounting seat. One end of several horizontal guide rods are respectively connected to the clamping plates of each group. The other ends of the horizontal guide rods connected to the clamping plates of each group pass through a corresponding cylinder mounting seat. The telescopic directions of the driving ends of all the clamping cylinders A and the axial center lines of all the horizontal guide rods are parallel to each other and parallel to the horizontal plane.

[0016] An exhaust port A and an exhaust port E are provided on the top surface of the first-level medicine-containing tank body, an exhaust port B is provided on the top surface of the second-level medicine-containing tank body, and an exhaust port C is provided on the top surface of the third-level medicine-containing tank body. The exhaust port A, exhaust port B, and exhaust port C are respectively connected to the confluence pipe, and the exhaust port E is connected to the external exhaust system.

[0017] The filling and injecting unit includes a lower frame, a lifting cylinder A, a cylinder connecting plate, an inner sleeve, an outer sleeve, a vertical guide rod, and a spring. The lower frame is located on the inner side of the main frame. The cylinder bodies of several lifting cylinders A are installed on the lower frame. The driving ends of each lifting cylinder A are vertically downward. The cylinder connecting plates are respectively fixed to the driving ends of all lifting cylinders A. The upper and lower ends of the inner sleeve are open, and the upper and lower ends of the outer sleeve are open. The upper end opening of the inner sleeve serves as the material input end of the filling and injecting unit and is connected to the lower end of the transfer tube C. The lower end opening of the inner sleeve serves as the material output end of the filling and injecting unit. The outer sleeve is sleeved on the inner The outside of the sleeve, and the upper end opening of the outer sleeve is fixedly connected to the upper end opening of the inner sleeve, and a plurality of guide rod mounting seats are provided on the outer circumferential surface of the outer sleeve, and each of the guide rod mounting seats is respectively fixed with the lower end of a corresponding vertical guide rod, and the upper end of each vertical guide rod passes through the cylinder connecting plate and is connected to the limiting block, and the axial center lines of the inner sleeve, the outer sleeve and all vertical guide rods are perpendicular to the horizontal plane, and the outer sides of each vertical guide rod between the guide rod mounting seats and the cylinder connecting plate are respectively sleeved with the springs, and the upper end of each spring abuts against the cylinder connecting plate, and the lower end of each spring abuts against the corresponding guide rod mounting seat.

[0018] There is a gap between the inner circumference of the outer sleeve and the outer circumference of the inner sleeve, and an exhaust port D is opened on the outer sleeve. The gap between the inner circumference of the outer sleeve and the outer circumference of the inner sleeve is connected to the exhaust port D, and the exhaust port D is connected to the confluence pipe;

[0019] An annular air bag is provided on the outer circumferential surface of the outer sleeve near the lower end opening of the outer sleeve, and a spiral guide plate is provided on the outer circumferential surface of the inner sleeve along the axial direction of the inner sleeve.

[0020] The automatic weighing and filling medicine pellet device of the present invention also includes a support and positioning unit, which includes a lower mounting base, a lifting cylinder B, a lifting plate, a main support column, a pneumatic vibrator A, a clamping cylinder B, and a pneumatic vibrator B; the lower mounting base is mounted on the lower frame, and the lower mounting base is located below the integral body composed of the inner sleeve and the outer sleeve, the cylinder body of the lifting cylinder B is mounted on the lower mounting base, the driving end of the lifting cylinder B is vertically upward and fixed to the bottom surface of the lifting plate, a plurality of the main support columns are fixed to the top surface of the lifting plate, and a plurality of the pneumatic vibrators A are also fixed to the top surface of the lifting plate, the vibrating end of each of the pneumatic vibrators A is vertically upward, the top end of each of the main support columns and the vibrating end of each of the pneumatic vibrators A are used to support the bottom of the medicine container, and a positioning pin is also provided on the top end of each of the main support columns, and each of the positioning pins is used to be plugged into a positioning hole provided on the bottom of the corresponding medicine container;

[0021] The lower frame is also provided with two clamping cylinders B, which are symmetrically located on both sides of the medicine container. The driving end of each clamping cylinder B is fixedly connected to a pneumatic vibrator B, and the vibration end of each pneumatic vibrator B is located on the side close to the medicine container.

[0022] Several auxiliary support columns are fixedly connected to the top surface of the lifting plate, and the top of each auxiliary support column is also used to support the bottom of the medicine container; the upper ends of several guide columns are fixedly connected to the bottom surface of the lifting plate, and the lower ends of each guide column pass through the lower mounting base respectively.

[0023] The advantages and positive effects of the present invention are:

[0024] 1. The present invention adopts the coordinated arrangement of a first-level medicine storage tank, a second-level medicine storage tank, a third-level medicine storage tank, a weighing module, a conical guide barrel, a filling and injecting unit, etc. Each level of the medicine storage tank is equipped with an independent weighing module. The third-level medicine storage tank can work in parallel with the first-level medicine storage tank and the second-level medicine storage tank, thereby enabling the medicine pellets to be circulated, weighed and filled in parallel, effectively improving work efficiency, and maximizing the adaptability and flexibility of the entire device to meet the functional requirements under different working conditions.

[0025] 2. The present invention can achieve rapid material feeding and accurate material replenishment respectively through the coordinated arrangement of the weighing module with pinch valves A and D, thereby improving the overall operating efficiency while ensuring weighing and filling accuracy.

[0026] 3. All driving components of the present invention are pneumatically controlled to ensure the explosion-proof safety of the entire device; at the same time, a gas-off protection unit is designed to ensure safety in unexpected situations such as gas and power outages.

[0027] 4. The present invention can prevent the granule materials from coming into contact with the external environment during the entire weighing and filling process. At the same time, waste gas, dust, etc. can be transmitted to a designated location through a specific pipeline for unified treatment, which not only ensures safety but also meets environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the first-level medicine-containing tank, the conical diversion barrel, and the gas-cutoff protection unit of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the conical guide barrel and the gas cut-off protection unit of the present invention;

[0031] Figure 4 Schematic diagram of the external structure of the filling and injecting unit of the present invention;

[0032] Figure 5 Schematic diagram of the cross-sectional structure of the filling and injecting unit of the present invention;

[0033] Figure 6 for Figure 5 A magnified view of point A;

[0034] Figure 7 It is a structural schematic diagram of the support and positioning unit of the present invention;

[0035] Figure 8 for Figure 1 Enlarged view of point B.

[0036] In the figure: 1 is the main frame, 100 is the maintenance platform, 101 is the guardrail, 102 is the escalator, 2 is the first-level medicine tank, 201 is the external connection seat A, 3 is the second-level medicine tank, 4 is the third-level medicine tank, 5 is the weighing module, 6 is the conical diversion barrel, 7 is the filling and injection unit, 8 is the transfer pipe A, 9 is the pinch valve A, 10 is the transfer pipe C, 11 is the branch feed pipe, 12 is the pinch valve D, 13 is the gas cut-off protection unit, 14 is the upper mounting base, 15 is the clamping cylinder A, 16 is the clamping plate, 17 is the cylinder mounting seat, and 18 is the horizontal guide rod , 19 is the lower frame, 20 is the lifting cylinder A, 21 is the cylinder connecting plate, 22 is the inner sleeve, 23 is the outer sleeve, 24 is the vertical guide rod, 25 is the spring, 26 is the guide rod mounting seat, 27 is the limit block, 28 is the annular airbag, 29 is the spiral guide plate, 30 is the support positioning unit, 31 is the lower mounting base, 32 is the lifting cylinder B, 33 is the lifting plate, 34 is the main support column, 35 is the pneumatic vibrator A, 36 is the clamping cylinder B, 37 is the pneumatic vibrator B, 38 is the positioning pin, 39 is the auxiliary support column, and 40 is the guide column. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-8 The present invention is described in further detail.

[0038] An automatic weighing and filling device for medicine granules, such as Figure 1-8 As shown, this embodiment includes a main frame 1, a primary medicine tank 2, a secondary medicine tank 3, a tertiary medicine tank 4, a weighing module 5, a conical guide barrel 6, and a filling and injecting unit 7. In this embodiment, the main frame 1 is a steel frame structure and can be equipped with an inspection platform 100. The inspection platform 100 is equipped with a protective guardrail 101 and an escalator 102 for easy access by workers, so that workers can install, inspect and maintain the entire device.

[0039] Three external connection seats A 201 are evenly spaced along the circumference of the outer surface of the primary medicine tank body 2. Each external connection seat A 201 of the primary medicine tank body 2 is connected to the main frame body 1 via a weighing module 5. Three external connection seats B are evenly spaced along the circumference of the outer surface of the secondary medicine tank body 3. Each external connection seat B of the secondary medicine tank body 3 is connected to the main frame body 1 via a weighing module 5. Three external connection seats C are evenly spaced along the circumference of the outer surface of the tertiary medicine tank body 4. Each external connection seat C of the tertiary medicine tank body 4 is connected to the main frame body 1 via a weighing module 5. The primary medicine tank body 2, the secondary medicine tank body 3, and the tertiary medicine tank body 4 are arranged in sequence from top to bottom on the main frame body 1, and the arrangement principles are basically the same. In this embodiment, the primary medicine tank body 2, the secondary medicine tank body 3, and the tertiary medicine tank body 4 are all funnel-shaped to facilitate the drop of the granular material. The primary medicine tank 2, the secondary medicine tank 3, and the tertiary medicine tank 4 can be weighed by weighing modules 5 to obtain the medicine granules therein. In this embodiment, each weighing module 5 is a commercially available digital weighing module, such as the SLB615D PowerMount digital weighing module manufactured by Mettler Toledo, and is connected to an external controller for communication.

[0040] The primary medicine tank 2 has a primary feed port on its top and a primary discharge port at its bottom. This discharge port is connected to the upper end of a transfer tube A8. The primary feed port of the primary medicine tank 2 is used to feed transferred granular materials into the primary medicine tank 2. The primary medicine tank 2 itself temporarily stores transferred granular materials and transfers them to the secondary medicine tank 3 as needed.

[0041] The upper and lower ends of the conical guide barrel 6 are open, and the upper end opening of the conical guide barrel 6 is larger than the lower end opening of the conical guide barrel 6. The upper end opening of the conical guide barrel 6 is connected to the lower end of the transfer tube A 8, and the lower end opening of the conical guide barrel 6 is connected to the upper end of the pinch valve A 9.

[0042] The secondary medicine tank 3 has a secondary feed port on its top surface and a secondary discharge port at its bottom. The secondary feed port of the secondary medicine tank 3 is connected to the lower end of a pinch valve A9, while the secondary discharge port of the secondary medicine tank 3 is connected to the upper end of a pinch valve B. The lower end of the pinch valve B is connected to the upper end of a transfer tube B. Pinch valve A9 controls whether granules in the primary medicine tank 2 can enter the secondary medicine tank 3 through the secondary feed port, providing a primary, rapid feed mechanism for the secondary medicine tank 3. The secondary medicine tank 3 receives granules of a predetermined final filling mass. A weighing module 5 connected to the secondary medicine tank 3 monitors whether the granules in the secondary medicine tank 3 have reached a preset value.

[0043] The top surface of the tertiary medicine tank body 4 is provided with a tertiary feed port, and the bottom end of the tertiary medicine tank body 4 is provided with a tertiary discharge port. The tertiary feed port of the tertiary medicine tank body 4 is connected to the lower end of a transfer tube B. The tertiary discharge port of the tertiary medicine tank body 4 is connected to the upper end of a pinch valve C, and the lower end of the pinch valve C is connected to the upper end of a transfer tube C10. The pinch valve B is provided to control whether the granular material in the secondary medicine tank body 3 can enter the tertiary medicine tank body 4 through the tertiary discharge port of the tertiary medicine tank body 4, thereby feeding the tertiary medicine tank body 4. The pinch valve C is provided to control whether the granular material in the tertiary medicine tank body 4 can enter the filling and injection unit 7. The tertiary medicine tank body 4 is substantially the same size as the secondary medicine tank body 3 and is used to receive the granular material transferred from the secondary medicine tank body 3. The weighing module 5 connected to the tertiary medicine tank 4 is used to monitor whether the granules in the tertiary medicine tank 4 have reached a preset value. It also plays the role of reweighing the granules transferred from the secondary medicine tank 3, once again ensuring filling accuracy. The tertiary medicine tank 4 can operate in parallel with the primary medicine tank 2 and the secondary medicine tank 3, improving work efficiency.

[0044] The filling and injecting unit 7 has a material input end and a material output end. The material input end of the filling and injecting unit 7 is connected to the lower end of the transfer tube C10. The filling and injecting unit 7 fills the material into the medicine container.

[0045] In this embodiment, pinch valves A9, B, and C are all commercially available. The calibers of pinch valves A9, B, and C are identical, and their installation and connection methods all utilize existing technologies. Pinch valves A9, B, and C are each controlled by an external controller. In this embodiment, transfer tubes A8, B, and C10 all utilize flexible hoses, and their installation and connection methods all utilize existing technologies. By utilizing flexible hoses, the weighing module 5 is protected from disturbances caused by material transfer to the transfer tubes during weighing, maximizing weighing accuracy.

[0046] Specifically, if Figure 2 and Figure 3 As shown, in this embodiment, three branch openings are evenly distributed on the outer circumference of the conical guide barrel 6. Each branch opening is connected to one end of a branch feed pipe 11, the other end of which is connected to the upper end of a corresponding pinch valve D12. A feed port is provided on the top surface of the secondary medicine tank 3, corresponding to the lower end of each pinch valve D12. Each feed port of the secondary medicine tank 3 is connected to the lower end of a corresponding pinch valve D12. The caliber of each pinch valve D12 is smaller than that of pinch valve A9. In this embodiment, pinch valve D12 is a commercially available product and is also controlled by an external controller. The coordinated arrangement of the branch feed pipe 11 and pinch valve D12 enables precise feeding of the secondary medicine tank 3. The weighing module 5 connected to the secondary medicine tank 3 forms a closed control loop with pinch valve A9 and pinch valve D12 to ensure weighing accuracy.

[0047] like Figure 2 and Figure 3 As shown, the automatic weighing and filling device proposed in this embodiment also includes a gas shutoff protection unit 13. The gas shutoff protection unit 13 includes an upper mounting base 14, two sets of cooperating clamping cylinders A15, and clamping plates 16. The upper mounting base 14 is mounted on the main frame 1 and positioned between the primary medicine tank 2 and the secondary medicine tank 3. The cylinder bodies of the two sets of clamping cylinders A15 are respectively mounted on the upper mounting base 14, and the two sets of clamping cylinders A15 are symmetrically located on either side of the transfer tube A8. Each set of clamping plates 16 is mounted on the driving end of the clamping cylinder A15 in the same set. When the driving ends of the two clamping cylinders A15 are retracted, the two sets of clamping plates 16 are respectively moved away from the transfer tube A8. When the driving ends of the two clamping cylinders A15 are extended, the two sets of clamping plates 16 clamp the transfer tube A8. In this embodiment, the clamping cylinders A15 are commercially available single-acting cylinders. When the automatic weighing and filling device for medicine pellets is working normally, the driving ends of the two groups of clamping cylinders A15 are in a retracted state; when the automatic weighing and filling device for medicine pellets encounters special circumstances such as gas or power outages, the return spring in the single-acting cylinder starts to operate, and the driving ends of the two groups of clamping cylinders A15 extend toward each other, and then the hose adapter tube A8 is clamped to ensure that the medicine pellets will not continue to fall and wait for subsequent processing by subsequent personnel.

[0048] Each group of clamping cylinders A15 is mounted on the upper mounting base 14 via a corresponding cylinder mounting base 17. Each group of clamping plates 16 is connected to one end of two horizontal guide rods 18. The other end of each horizontal guide rod 18 connected to each clamping plate 16 passes through a corresponding cylinder mounting base 17. The extension and retraction directions of the driving ends of all clamping cylinders A15 and the axial centerlines of all horizontal guide rods 18 are parallel to each other and to the horizontal plane. The cylinder mounting base 17 may be equipped with a linear bearing for the horizontal guide rods 18 to pass through. The provision of the horizontal guide rods 18 ensures accurate and reliable horizontal movement of the clamping plates 16.

[0049] Specifically, in this embodiment, exhaust ports A and E are provided on the top surface of the primary medicine tank 2, exhaust port B is provided on the top surface of the secondary medicine tank 3, and exhaust port C is provided on the top surface of the tertiary medicine tank 4. Exhaust ports A, B, and C are each connected to a confluence pipe, while exhaust port E is connected to an external exhaust system via a hose. In this embodiment, the confluence pipe and external exhaust system are both configured using existing technologies, and the confluence pipe also utilizes a hose. This facilitates the convergence of exhaust gases generated by the secondary and tertiary medicine tanks 3 and 4 into the primary medicine tank 2, where exhaust gases from the primary medicine tank 2 are then extracted and discharged from the external exhaust system via exhaust port E.

[0050] Specifically, if Figure 4-6As shown, in this embodiment, the filling and injecting unit 7 includes a lower frame 19, a lifting cylinder A20, a cylinder connecting plate 21, an inner sleeve 22, an outer sleeve 23, a vertical guide rod 24, and a spring 25. The lower frame 19 is located on the inner side of the main frame 1. The cylinder bodies of two lifting cylinders A20 are installed on the lower frame 19 through the cylinder mounting bracket. The driving end of each lifting cylinder A20 is vertically downward. The cylinder connecting plate 21 is respectively connected to all the lifting cylinders A20. The driving end of 20 is fixed, the upper and lower ends of the inner sleeve 22 are open, the upper and lower ends of the outer sleeve 23 are open, the upper end opening of the inner sleeve 22 serves as the material input end of the filling and injection unit 7, and is connected to the lower end of the transfer tube C10, the lower end opening of the inner sleeve 22 serves as the material output end of the filling and injection unit 7, the outer sleeve 23 is sleeved on the outside of the inner sleeve 22, and the upper end opening of the outer sleeve 23 is fixedly connected to the upper end opening of the inner sleeve 22, and four guide rod mounting seats 26 are evenly provided on the outer circumference of the outer sleeve 23, each guide rod mounting seat 26 is provided. The mounting seat 26 is fixedly connected to the lower end of a corresponding vertical guide rod 24. The upper end of each vertical guide rod 24 passes through the cylinder connecting plate 21 and is connected to a limit block 27. The axial centerlines of the inner sleeve 22, outer sleeve 23, and all vertical guide rods 24 are perpendicular to the horizontal plane. A spring 25 is sleeved on the outer side of each vertical guide rod 24 between each guide rod mounting seat 26 and the cylinder connecting plate 21. The upper end of each spring 25 abuts the cylinder connecting plate 21, and the lower end of each spring 25 abuts the corresponding guide rod mounting seat 26. The limit block 27 is provided to prevent the vertical guide rod 24 from falling off the cylinder connecting plate 21.

[0051] In this embodiment, there is a gap between the inner circumference of the outer sleeve 23 and the outer circumference of the inner sleeve 22. An exhaust port D is provided on the outer sleeve 23, and the gap between the inner circumference of the outer sleeve 23 and the outer circumference of the inner sleeve 22 is connected to the exhaust port D, and the exhaust port D is connected to the confluence pipe.

[0052] An annular airbag 28 is provided on the outer circumference of the outer sleeve 23 near the lower end opening thereof, and a spiral guide plate 29 is provided on the outer circumference of the inner sleeve 22 along the axial direction of the inner sleeve 22. The annular airbag 28 is a commercially available product and is controlled by an external controller to expand outwards when inflated or to shrink inwards when deflated.

[0053] When the medicine container needs to be filled with medicine pellets, the lifting cylinder A 20 drives the cylinder connecting plate 21 downward, allowing the inner sleeve 22 and outer sleeve 23 to extend into the container. The annular airbag 28 is then controlled to expand and tighten against the inner wall of the container, isolating the internal environment of the container from the outside and preventing exhaust gas from escaping. The pinch valve C is then controlled to open, and the container can be filled. The vertical guide rod 24 and spring 25 allow the inner sleeve 22 and outer sleeve 23 to float vertically, maximizing the tolerance for the docking position error between the medicine container and the unit. Exhaust gas in the medicine container is discharged through the gap between the inner circumference of the outer sleeve 23 and the outer circumference of the inner sleeve 22, and the exhaust port D. It is then collected through the confluence pipe and collected into the primary medicine tank body 2. Any medicine pellets that accidentally enter the gap between the inner circumference of the outer sleeve 23 and the outer circumference of the inner sleeve 22 during filling are intercepted by the spiral guide plate 29 and flowed back into the medicine container. When filling is not in progress, the lifting cylinder A 20 drives the cylinder connecting plate 21 to rise to avoid the medicine containers transported later.

[0054] like Figure 1 、 Figure 7 and Figure 8 As shown, the automatic weighing and filling device for medicine pellets in this embodiment further includes a support and positioning unit 30, which includes a lower mounting base 31, a lifting cylinder B 32, a lifting plate 33, a main support column 34, a pneumatic vibrator A 35, a clamping cylinder B 36, and a pneumatic vibrator B 37. The lower mounting base 31 is mounted on the lower frame 19 and is located below the integrated structure of the inner sleeve 22 and outer sleeve 23. The cylinder body of the lifting cylinder B 32 is mounted on the lower mounting base 31. The driving end of the lifting cylinder B 32 faces vertically upward and is fixed to the bottom surface of the lifting plate 33. Two diagonally positioned main support columns 34 are fixed to the top surface of the lifting plate 33. Two diagonally positioned pneumatic vibrators A 35 are also fixed to the top surface of the lifting plate 33. The vibrating end of each pneumatic vibrator A 35 faces vertically upward. The top end of each main support column 34 and the vibrating end of each pneumatic vibrator A 35 are used to support the bottom of the medicine container. A locating pin 38 is also provided on the top of each main support column 34. Each locating pin 38 is used to engage with a corresponding locating hole on the bottom of the corresponding medicine container to reliably position the medicine container.

[0055] The lower frame 19 is also equipped with two clamping cylinders B36, symmetrically located on either side of the medicine container. Each clamping cylinder B36's driving end is fixedly connected to a pneumatic vibrator B37, with the vibrating end of each pneumatic vibrator B37 located on the side closest to the medicine container. In this embodiment, the extension and retraction directions of the driving ends of the clamping cylinders B36 are parallel to the horizontal plane.

[0056] In this embodiment, four evenly spaced auxiliary support columns 39 are fixed to the top surface of the lifting plate 33. The top end of each auxiliary support column 39 also supports the bottom of the medicine container. In this embodiment, the upper ends of four guide columns 40 are evenly fixed to the bottom surface of the lifting plate 33. The lower end of each guide column 40 extends through the lower mounting base 31. The lifting plate 33 may be equipped with linear bearings for the guide columns 40 to pass through. The provision of the guide columns 40 ensures stable lifting and lowering of the lifting plate 33.

[0057] In this embodiment, the lifting cylinder B32, pneumatic vibrator A35, clamping cylinder B36, and pneumatic vibrator B37 are all commercially available products, each controlled by an external controller. Controlling the driving end of the lifting cylinder B32 drives the lifting plate 33 up and down, thereby raising and lowering the medicine container above the lifting plate 33. The top ends of the main support columns 34, the top ends of the auxiliary support columns 39, and the vibrating ends of the pneumatic vibrators A35 support the bottom of the medicine container. After the lifting plate 33 is raised, the driving ends of the clamping cylinders B36 extend and drive the pneumatic vibrators B37 to move. The vibrating ends of the pneumatic vibrators B37 contact the outer circumference of the medicine container. Considering the size and flow characteristics of the filled medicine pellets, the pellets will have pointed protrusions within the medicine container. This not only wastes space within the medicine container but also hinders subsequent capping of the container. By simultaneously controlling the actions of pneumatic exciter A 35 and pneumatic exciter B 37, the medicine container is vibrated, ensuring smoother and more even filling. This, in turn, results in more uniform shape of the medicine particles within the container, facilitating subsequent workstations. Upon completion of filling, lift cylinder B 32 drives lift plate 33 downward, returning the medicine container to its original position and ensuring continued operation.

[0058] Working principle:

[0059] During operation, the granular material enters the primary medicine tank body 2 through the hose, and the weighing module 5 connected to the primary medicine tank body 2 monitors the material quality in the primary medicine tank body 2 in real time; then the material enters the secondary medicine tank body 3 through the conical diversion barrel 6 and the pinch valve A 9, and at the same time, the weighing module 5 connected to the secondary medicine tank body 3 monitors the material quality in the secondary medicine tank body 3 in real time. When the weighing module 5 connected to the secondary medicine tank body 3 detects that the material quality reaches a predetermined value slightly lower than the predetermined final filling quality, the pinch valve A is closed. 9, and slowly feed the material through the feeding port of the secondary medicine tank 3 by controlling the pinch valve D12 connected to each branch feeding pipe 11. When the predetermined final filling mass is reached, all the pinch valves D12 are closed; after the tertiary medicine tank 4 receives the material, it is reweighed. At this time, the secondary medicine tank 3 can work in parallel; then the tertiary medicine tank 4 transmits the material through the pinch valve C to the filling and injecting unit 7, and the filling and injecting unit 7 fills the material into the medicine container.

Claims

1. An automatic weighing and filling device for medicine pellets, characterized by: It includes a main frame (1), a first-level medicine-containing tank body (2), a second-level medicine-containing tank body (3), a third-level medicine-containing tank body (4), a weighing module (5), a conical diversion barrel (6), and a filling and injecting unit (7); A plurality of external connection seats A (201) are evenly arranged on the outer circumference of the first-level medicine-containing tank body (2), and each external connection seat A (201) of the first-level medicine-containing tank body (2) is connected to the main frame (1) through a weighing module (5). A plurality of external connection seats B are evenly arranged on the outer circumference of the second-level medicine-containing tank body (3), and each external connection seat B of the second-level medicine-containing tank body (3) is connected to the main frame (1) through a weighing module (5). A plurality of external connection seats C are evenly arranged on the outer circumference of the third-level medicine-containing tank body (4), and each external connection seat C of the third-level medicine-containing tank body (4) is connected to the main frame (1) through a weighing module (5). The first-level medicine-containing tank body (2), the second-level medicine-containing tank body (3), and the third-level medicine-containing tank body (4) are arranged in order from top to bottom on the main frame (1); A first-level feed port is provided on the top surface of the first-level medicine-containing tank body (2), a first-level discharge port is provided at the bottom end of the first-level medicine-containing tank body (2), and the first-level discharge port of the first-level medicine-containing tank body (2) is connected to the upper end of the transfer pipe A (8); The cone-shaped guide barrel (6) has openings at both ends, the upper end opening of the cone-shaped guide barrel (6) is larger than the lower end opening of the cone-shaped guide barrel (6), the upper end opening of the cone-shaped guide barrel (6) is connected to the lower end of the transfer tube A (8), and the lower end opening of the cone-shaped guide barrel (6) is connected to the upper end of the pinch valve A (9); A secondary feed port is provided on the top surface of the secondary medicine storage tank body (3), and a secondary discharge port is provided at the bottom end of the secondary medicine storage tank body (3). The secondary feed port of the secondary medicine storage tank body (3) is connected to the lower end of the clamping valve A (9), and the secondary discharge port of the secondary medicine storage tank body (3) is connected to the upper end of the clamping valve B, and the lower end of the clamping valve B is connected to the upper end of the transfer pipe B. A three-stage feed port is provided on the top surface of the three-stage medicine storage tank body (4), and a three-stage discharge port is provided at the bottom end of the three-stage medicine storage tank body (4). The three-stage feed port of the three-stage medicine storage tank body (4) is connected to the lower end of the transfer pipe B, and the three-stage discharge port of the three-stage medicine storage tank body (4) is connected to the upper end of the clamping valve C, and the lower end of the clamping valve C is connected to the upper end of the transfer pipe C (10); The filling and injecting unit (7) has a material input end and a material output end, the material input end of the filling and injecting unit (7) is connected to the lower end of the transfer tube C (10), and the filling and injecting unit (7) is used to fill the material into the medicine container; The filling and injecting unit (7) includes a lower frame (19), a lifting cylinder A (20), a cylinder connecting plate (21), an inner sleeve (22), an outer sleeve (23), a vertical guide rod (24), and a spring (25). The lower frame (19) is located on the inner side of the main frame (1). The cylinder bodies of several lifting cylinders A (20) are installed on the lower frame (19). The driving end of each lifting cylinder A (20) is vertically downward. The cylinder connecting plate (21) are respectively fixed to the driving ends of all lifting cylinders A (20), the upper and lower ends of the inner sleeve (22) are both open, the upper and lower ends of the outer sleeve (23) are both open, the upper end opening of the inner sleeve (22) serves as the material input end of the filling and injection unit (7) and is connected to the lower end of the transfer tube C (10), the lower end opening of the inner sleeve (22) serves as the material output end of the filling and injection unit (7), and the outer sleeve (23) is sleeved on the The outer side of the inner sleeve (22), and the upper end opening of the outer sleeve (23) is fixedly connected to the upper end opening of the inner sleeve (22), and a plurality of guide rod mounting seats (26) are provided on the outer peripheral surface of the outer sleeve (23), each of the guide rod mounting seats (26) is respectively fixedly connected to the lower end of a corresponding vertical guide rod (24), and the upper end of each vertical guide rod (24) passes through the cylinder connecting plate (21) and is connected to the limiting block (27), and the axial center lines of the inner sleeve (22), the outer sleeve (23) and all the vertical guide rods (24) are perpendicular to the horizontal plane, and the outer side of each vertical guide rod (24) between each guide rod mounting seat (26) and the cylinder connecting plate (21) is respectively sleeved with the spring (25), the upper end of each spring (25) abuts against the cylinder connecting plate (21), and the lower end of each spring (25) abuts against the corresponding guide rod mounting seat (26); There is a gap between the inner circumference of the outer sleeve (23) and the outer circumference of the inner sleeve (22), an exhaust port D is provided on the outer sleeve (23), and the gap between the inner circumference of the outer sleeve (23) and the outer circumference of the inner sleeve (22) is connected to the exhaust port D, and the exhaust port D is connected to the confluence pipe; An annular air bag (28) is provided on the outer peripheral surface of the outer sleeve (23) near the lower end opening of the outer sleeve (23), and a spiral guide plate (29) is provided on the outer peripheral surface of the inner sleeve (22) along the axial direction of the inner sleeve (22).

2. The automatic weighing and filling device for medicine pellets according to claim 1, characterized in that: A plurality of branch ports are also provided on the outer peripheral surface of the conical guide barrel (6), each of the branch ports is connected to one end of a branch feed pipe (11), and the other end of each branch feed pipe (11) is connected to the upper end of a corresponding clamping valve D (12). Feed ports are provided on the top surface of the secondary medicine storage tank body (3) at positions corresponding to the lower ends of the clamping valves D (12), and each feed port of the secondary medicine storage tank body (3) is connected to the lower end of a corresponding clamping valve D (12). The caliber of each clamping valve D (12) is smaller than the caliber of the clamping valve A (9).

3. The automatic weighing and filling device for medicine pellets according to claim 1, characterized in that: The transfer tube A (8), transfer tube B, and transfer tube C (10) are all made of hoses.

4. The automatic weighing and filling device for medicine pellets according to claim 3, characterized in that: A gas-breaking protection unit (13) is also provided, and the gas-breaking protection unit (13) includes an upper mounting base (14), two sets of cooperating clamping cylinders A (15) and clamping plates (16), the upper mounting base (14) is mounted on the main frame (1) and is located between the first-level medicine-containing tank body (2) and the second-level medicine-containing tank body (3), the cylinder bodies of the two sets of the clamping cylinders A (15) are respectively arranged on the upper mounting base (14), and the two sets of the clamping cylinders A (15) are respectively arranged on the upper mounting base (14). The cylinders A (15) are symmetrically located on both sides of the transfer tube A (8), and each group of the clamping plates (16) is respectively installed on the driving end of the clamping cylinders A (15) of the same group; when the driving ends of the two groups of the clamping cylinders A (15) are retracted, the clamping plates (16) of the two groups are respectively away from the transfer tube A (8); when the driving ends of the two groups of the clamping cylinders A (15) are extended, the clamping plates (16) of the two groups clamp the transfer tube A (8).

5. The automatic weighing and filling device for medicine pellets according to claim 4, characterized in that: The clamping cylinders A (15) of each group are mounted on the upper mounting base (14) through corresponding cylinder mounting seats (17), and one end of a plurality of horizontal guide rods (18) are connected to the clamping plates (16) of each group, and the other ends of the horizontal guide rods (18) connected to the clamping plates (16) of each group pass through corresponding cylinder mounting seats (17). The telescopic directions of the driving ends of all the clamping cylinders A (15) and the axial center lines of all the horizontal guide rods (18) are parallel to each other and parallel to the horizontal plane.

6. The automatic weighing and filling device for medicine pellets according to claim 1, characterized in that: An exhaust port A and an exhaust port E are provided on the top surface of the first-level medicine-containing tank body (2), an exhaust port B is provided on the top surface of the second-level medicine-containing tank body (3), and an exhaust port C is provided on the top surface of the third-level medicine-containing tank body (4). The exhaust port A, the exhaust port B, and the exhaust port C are respectively connected to the confluence pipe, and the exhaust port E is connected to the external exhaust system.

7. The automatic weighing and filling device for medicine pellets according to claim 1, characterized in that: It also includes a support positioning unit (30), the support positioning unit (30) includes a lower mounting base (31), a lifting cylinder B (32), a lifting plate (33), a main support column (34), a pneumatic vibrator A (35), a clamping cylinder B (36), and a pneumatic vibrator B (37); the lower mounting base (31) is mounted on the lower frame (19), and the lower mounting base (31) is located below the whole composed of the inner sleeve (22) and the outer sleeve (23), the cylinder body of the lifting cylinder B (32) is mounted on the lower mounting base (31), and the driving end of the lifting cylinder B (32) is vertically upward , and is fixedly connected to the bottom surface of the lifting plate (33), a plurality of the main support columns (34) are fixedly connected to the top surface of the lifting plate (33), and a plurality of the pneumatic vibrators A (35) are also fixedly connected to the top surface of the lifting plate (33), and the vibrating end of each of the pneumatic vibrators A (35) is vertically upward, and the top end of each of the main support columns (34) and the vibrating end of each of the pneumatic vibrators A (35) are used to support the bottom of the medicine container, and a positioning pin (38) is also provided on the top end of each of the main support columns (34), and each of the positioning pins (38) is used to be plugged into a positioning hole provided on the bottom of the corresponding medicine container; The lower frame (19) is further provided with two clamping cylinders B (36), which are symmetrically located on both sides of the medicine container. The driving end of each clamping cylinder B (36) is fixedly connected to a pneumatic vibrator B (37), and the vibration end of each pneumatic vibrator B (37) is located on a side close to the medicine container.

8. The automatic weighing and filling device for medicine pellets according to claim 7, characterized in that: A plurality of auxiliary support columns (39) are fixedly connected to the top surface of the lifting plate (33), and the top end of each auxiliary support column (39) is also used to support the bottom of the medicine container; the upper ends of a plurality of guide columns (40) are fixedly connected to the bottom surface of the lifting plate (33), and the lower ends of each guide column (40) pass through the lower mounting base (31).

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