Liquid medicine filling machine

Abstract

The utility model discloses a liquid medicine filling machine which mainly comprises a pneumatic clamp, a liquid outlet head, a first choking head, a second choking head and a sliding table. The pneumatic clamp clamps double pipe openings of a liquid medicine bag through two sets of arc-shaped clamping jaws which are synchronously opened and closed, liquid is supplied to the liquid outlet head through the peristaltic pump, accurate insertion and extraction liquid injection is achieved through the lifting air cylinder, the double plugging heads press plugs and broken plugs into the corresponding pipe openings respectively, and the sliding table drives the clamp to horizontally move and switch between a liquid injection station and a plugging station. According to the utility model, the switching of double stations of liquid injection and plugging is realized through the translation of the sliding table, the two working procedures of main liquid and plugging are integrated into one set of equipment, and the plugging action is triggered immediately after the filling is finished, so that the working procedure interval is shortened, the exposure time of liquid medicine is shortened, the product stability is improved, and meanwhile, the production takt is accelerated; moreover, the traditional self-flowing type filling is replaced by the plug-pull type matching of the peristaltic pump and the liquid outlet head, so that the filling amount error is reduced, and the filling liquid medicine amount is accurately controlled; the soft bag filling machine is efficient, high in precision and suitable for soft bags.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, specifically to a liquid medicine filling machine. Background Technology

[0002] Pharmaceutical filling equipment is an important device in the pharmaceutical, food and chemical industries. Especially in the filling process of soft pharmaceutical bags (such as multi-layer co-extruded film pharmaceutical bags), it is necessary to take into account sealing, filling accuracy and production efficiency. The existing filling technology has the following limitations: (1) Self-flowing filling relies on liquid level difference to control flow rate, which is easily affected by environmental factors and equipment accuracy, resulting in fluctuations in filling volume, insufficient filling accuracy and residual liquid problems; (2) Soft bags are prone to deformation or folding due to improper mechanical squeezing or collision during the filling process, resulting in bag misalignment or reduced volume, which brings the risk of leakage; (3) Single-head filling mode cannot realize multi-station operation, resulting in insufficient filling efficiency and adaptability.

[0003] In summary, there is an urgent need for a filling equipment that is efficient, high-precision, and adaptable to the characteristics of soft bags. Utility Model Content

[0004] In order to overcome the shortcomings of existing filling equipment, this utility model provides a liquid medicine filling machine.

[0005] The technical solution adopted by this utility model is as follows: a medicine filling machine, comprising: a pneumatic clamp with grippers for holding the opening of a medicine bag; a dispensing head, disposed at the injection station, driven vertically by a first lifting cylinder and supplied with medicine by a peristaltic pump, wherein the injection end of the dispensing head is aligned with one of the openings for insertion and removal; a stoppering head, disposed at the stoppering station for pressing a sealing element into the opening; and a slide table for mounting the pneumatic clamp and driving the pneumatic clamp to move and switch between the injection station and the stoppering station.

[0006] Preferably, the liquid injection station has two sets of symmetrically arranged liquid injection stations, located on both sides of the stoppering station. The pneumatic clamp, the liquid outlet head, the first lifting cylinder and the peristaltic pump are all provided in two sets, forming a dual-liquid injection station alternating filling structure.

[0007] Preferably, the number of grippers matches the number of tube openings and they open and close synchronously. The inner side of each set of grippers is provided with an arc-shaped groove that matches the shape of the tube opening.

[0008] Preferably, the plugging station is equipped with: a first plugging head, which is driven to move by a second lifting cylinder and a first translation cylinder, and is connected to a plug feeding device for pressing a plug into the first pipe opening; and a second plugging head, which is driven to move by the second lifting cylinder and the first translation cylinder, and is connected to a break plug feeding device for pressing a break plug into the second pipe opening.

[0009] Preferably, the plug feeding device includes a plug vibratory plate, a plug conveying track, and a plug shifting cylinder, wherein the plug shifting cylinder sends the plug at the end of the plug conveying track into the first plugging head.

[0010] Preferably, the break plug feeding device includes a break plug vibratory plate, a break plug conveying track, and a break plug shifting cylinder, wherein the break plug shifting cylinder feeds the break plug at the end of the break plug conveying track into the second plugging head.

[0011] Preferably, the first and second plugging heads adopt a vacuum suction cup or pneumatic gripper structure.

[0012] Preferably, the slide is driven by a linear module or pneumatic drive, and the translational stroke covers the distance between the liquid injection station and the stoppering station.

[0013] Preferably, a second translation cylinder is installed on the slide, which drives the pneumatic clamp to move inward into the liquid injection station or outward out of the stoppering station.

[0014] Preferably, a baffle is fixed on the pneumatic cylinder of the pneumatic clamp, the upper part of the baffle is vertically attached to the pneumatic clamp, and the lower part is inclined outward.

[0015] This utility model has the following beneficial effects:

[0016] 1. Optimization of filling-stopping process: Through the linkage of slide table translation and dual-station design, the stopping action is triggered immediately after filling, shortening the process interval, avoiding oxidation or contamination caused by exposure of liquid medicine, improving product stability, and speeding up the production cycle.

[0017] 2. High-precision filling control: The plug-in connection between the peristaltic pump and the dispensing head replaces the traditional gravity filling method, reducing filling volume error and residual liquid in the dispensing head. Moreover, the peristaltic pump can adjust parameters via touch screen to precisely control the filling volume of medicine, meeting the filling needs of different sizes of medicine bags.

[0018] 3. Anti-deformation design for soft bags: The arc-shaped groove on the inner side of the gripper matches the shape of the tube opening. Combined with the synchronous opening and closing action, it avoids deformation or misalignment of the soft bag caused by mechanical squeezing, ensures accurate positioning of the medicine bag, ensures that the liquid outlet is aligned with the tube opening, and also prevents the medicine in the medicine bag from being squeezed out in the reverse direction, reducing the risk of medicine leakage.

[0019] 4. Dual-station alternating filling: Through two sets of symmetrically arranged liquid injection stations and a dual pneumatic clamp structure, the filling and capping processes are carried out synchronously and alternately, improving filling efficiency and suitable for continuous production needs.

[0020] 5. Anti-pollution design: The inclined baffle of the pneumatic clamp can prevent liquid splashing. Combined with the translational isolation function of the slide table, it can achieve physical separation between the loading and unloading station and the liquid injection station and the plugging station, thus meeting hygiene requirements. Attached Figure Description

[0021] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0022] Figure 2 This is a plan view of an embodiment of the present utility model.

[0023] Figure 3 This is a schematic diagram showing the positions of a single liquid injection station and a stoppering station in an embodiment of this utility model.

[0024] Figure 4 This is a schematic diagram of the plugging station in an embodiment of this utility model.

[0025] Figure 5 This is a schematic diagram of the medicine bag in an embodiment of this utility model.

[0026] 1. Pneumatic clamp, 2. Gripper, 3. Medicine bag, 4. Pipe, 5. Dispensing head, 6. First lifting cylinder, 7. Peristaltic pump, 8. First plugging head, 9. Second lifting cylinder, 10. First translation cylinder, 11. Plug feeding device, 12. Plug, 13. Second plugging head, 14. Plug feeding device, 15. Plug, 16. Slide table, 17. Plug vibrating plate, 18. Plug conveying track, 19. Plug displacement cylinder, 20. Plug vibrating plate, 21. Plug conveying track, 22. Plug displacement cylinder, 23. Second translation cylinder, 24. Baffle, 25. Frame;

[0027] Liquid injection station A, stoppering station B. Detailed Implementation

[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0029] In the embodiments, such as Figures 1-5The image shows a liquid filling machine, comprising: a pneumatic clamp 1 with grippers 2 for holding the opening 4 of a liquid bag 3; a dispensing head 5, located at the injection station A, driven vertically by a first lifting cylinder 6, and supplied with liquid by a peristaltic pump 7, the injection end of the dispensing head 5 being aligned with an opening 4 for insertion and removal; a stoppering head, located at the stoppering station B, for pressing a sealing element into the opening 4; and a slide 16 for mounting the pneumatic clamp 1 and driving it to move and switch between the injection station A and the stoppering station B. Specifically, in this embodiment, the number of grippers 2 matches the number of openings 4, both being two sets. Correspondingly, the stopper heads are also divided into: a first stopper head 8, which is driven by a second lifting cylinder 9 and a first translation cylinder 10, and is connected to a stopper feeding device 11 for pressing a stopper 12 into the first pipe opening 4; and a second stopper head 13, which is driven by a second lifting cylinder 9 and a first translation cylinder 10, and is connected to a break-stop feeding device 14 for pressing a break-stop 15 into the second pipe opening 4. The peristaltic pump 7 is equipped with touch screen control, which can set the parameters for intermittent filling according to the specifications of the medicine bag 3 and process requirements. In this embodiment, the pneumatic clamp 1 holds the two openings 4 of the medicine bag 3 through two sets of synchronously opening and closing grippers 2. The positioning of the two tubes ensures the stability of the medicine bag 3 during filling and capping. The liquid outlet 5 is driven by the first lifting cylinder 6 to vertically insert and remove the openings 4. Combined with the peristaltic pump 7, the flow rate of the medicine is precisely controlled to avoid gravity flow errors. The first capping head 8 and the second capping head 13 are linked by the second lifting cylinder 9 and the first translation cylinder 10 to simultaneously press the plug 12 and the broken plug 15 into the openings 4, shortening the process interval. The slide table 16 drives the pneumatic clamp 1 to move between the liquid injection station A and the capping station B, realizing rapid process switching and shortening the exposure time of the medicine.

[0030] In the embodiments, such as Figure 1 , Figure 2 , Figure 4 As shown, there are two symmetrically arranged liquid injection stations A, located on both sides of the stoppering station B. Two sets of pneumatic clamps 1, liquid outlet heads 5, first lifting cylinders 6, and peristaltic pumps 7 are each provided, forming a dual-injection station alternating filling structure. Based on the characteristics of long liquid injection time and short stoppering time, the number of liquid injection stations A and single stoppering stations B in this embodiment is arranged in a 2:1 ratio, allowing the filling and stoppering processes to alternate, facilitating synchronization of production rhythm and improving efficiency.

[0031] In the embodiments, such as Figure 3 As shown, the inner side of the gripper 2 is provided with an arc-shaped groove that matches the shape of the tube opening 4, and the two sets of grippers 2 open and close synchronously. The arc-shaped groove on the inner side of the gripper 2, combined with the synchronous opening and closing action, prevents the gripper 2 from directly contacting the body of the medicine bag 3, avoiding deformation or misalignment of the medicine bag 3 caused by mechanical squeezing, ensuring accurate positioning of the medicine bag, and also preventing the medicine inside the medicine bag 3 from being squeezed out in the reverse direction, reducing the risk of medicine leakage.

[0032] In the embodiments, such as Figure 4 As shown, the plug feeding device 11 includes a plug vibratory feeder 17, a plug conveying track 18, and a plug shifting cylinder 19. The plug shifting cylinder 19 feeds the plug 12 at the end of the plug conveying track 18 into the first plugging head 8. Similarly, the break-off plug feeding device 14 includes a break-off plug vibratory feeder 20, a break-off plug conveying track 21, and a break-off plug shifting cylinder 22. The break-off plug shifting cylinder 22 feeds the break-off plug 15 at the end of the break-off plug conveying track 21 into the second plugging head 13. The plug vibratory feeder 17 and the plug conveying track 18 cooperate to automatically sort the plugs 12. The plug shifting cylinder 19 accurately pushes the plugs 12 to the first plugging head 8. The break-off plug vibratory feeder 20 and the conveying track 21 cooperate to automatically sort the break-off plugs 15. The break-off plug shifting cylinder 22 accurately pushes the break-off plugs 15 to the second plugging head 13. The above structure ensures efficient and continuous feeding of plugs with complex structures.

[0033] In the embodiments, such as Figure 3 As shown, the first plugging head 8 and the second plugging head 13 employ a vacuum suction cup or pneumatic gripper structure. In this embodiment, a specific plugging head structure is selected based on the different materials and structures of the plug 12 and the break-off plug 15 to ensure reliable adsorption or gripping.

[0034] In the embodiments, such as Figure 3 As shown, the slide table 16 is driven by a linear module or pneumatic drive, and its translational stroke covers the distance between the liquid filling station A and the capping station B. The linear module or pneumatically driven slide table 16 has a faster response speed and higher movement accuracy, which is conducive to realizing the synchronous alternation of filling and capping processes and is suitable for continuous production requirements.

[0035] In the embodiments, such as Figure 3 As shown, a second translation cylinder 23 is installed on the slide table 16. The second translation cylinder 23 drives the pneumatic clamp 1 to move inward into the liquid injection station A or outward out of the plugging station B. The second translation cylinder 23 is used to move the slide table 16 between the liquid injection station A, the plugging station B, and the loading and unloading station, so that the loading and unloading station is closer to the operator, which facilitates the operation and reduces the labor intensity.

[0036] In the embodiments, such as Figure 1 , Figure 2 As shown, a baffle 24 is fixed on the pneumatic cylinder of the pneumatic clamp 1. The upper part of the baffle 24 is vertically attached to the pneumatic clamp 1, and the lower part is inclined outward. The inclined baffle can prevent the liquid from splashing and at the same time realize the physical separation between the loading and unloading station and the liquid injection station A and the stoppering station B, thus meeting hygiene requirements.

[0037] The specific operating steps of the liquid medicine filling machine in this embodiment are as follows:

[0038] Step 1. Loading and clamping:

[0039] Place the two openings 4 of the empty medicine bag 3 between the jaws 2 of the pneumatic clamp 1 on the left. The pneumatic clamp 1 drives the jaws 2 to close synchronously, clamping the openings 4 through the arc groove. The second translation cylinder 23 drives the pneumatic clamp 1 to move from the loading station to the injection station A.

[0040] Step 2. Filling at Injection Station A:

[0041] The liquid outlet 5 on the left side is lowered by the first lifting cylinder 6 and inserted into a pipe port 4, which corresponds to the start of the peristaltic pump 7, injecting the medicine into the medicine bag 3 according to the set flow rate;

[0042] Step 3. Switch to stop station B:

[0043] After filling is completed, the liquid outlet 5 rises and exits from the pipe port 4, and the slide table 16 moves horizontally to the stoppering station B.

[0044] Step 4. Simultaneous insertion of both plugs:

[0045] The first plugging head 8 takes the plug 12 from the plug feeding device 11, and the second plugging head 13 takes the broken plug 15 from the broken plug feeding device 14; the first translation cylinder 10 pushes horizontally, and the second lifting cylinder 9 presses down, pressing the plug 12 and the broken plug 15 into the corresponding pipe opening 4.

[0046] Step 5. Unloading and loading on the other side;

[0047] The second translation cylinder 23 drives the pneumatic clamp 1 to move outward from the plugging station B to the unloading station. The pneumatic clamp 1 releases the jaws 2 and takes out the medicine bag 3 that has been filled and sealed.

[0048] Place the two openings 4 of the empty medicine bag 3 between the jaws 2 of the pneumatic clamp 1 on the right side. The pneumatic clamp 1 drives the jaws 2 to close synchronously, clamping the openings 4 through the arc groove. The second translation cylinder 23 drives the pneumatic clamp 1 to move from the loading station to the injection station A.

[0049] Step 6. Repeat steps 1-5:

[0050] To achieve continuous alternating filling in a dual-station mode.

[0051] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A liquid medicine filling machine, characterized in that, include: Pneumatic clamp (1) has grippers (2) for holding the opening (4) of the medicine bag (3); The liquid outlet (5) is set at the liquid injection station (A), and is driven to move vertically by the first lifting cylinder (6), and is supplied with medicine by the peristaltic pump (7). The liquid injection end of the liquid outlet (5) is aligned with one of the pipe ports (4) and can be inserted and removed. A plugging head is set at the plugging station (B) and is used to press the plugging component into the pipe opening (4); The slide (16) is used to install the pneumatic clamp (1) and drive the pneumatic clamp (1) to move and switch between the liquid injection station (A) and the plugging station (B).

2. The liquid medicine filling machine according to claim 1, characterized in that, The liquid injection station (A) has two sets of symmetrically arranged, located on both sides of the stoppering station (B). The pneumatic clamp (1), the liquid outlet (5), the first lifting cylinder (6) and the peristaltic pump (7) are all provided in two sets, forming a dual-liquid injection station alternating filling structure.

3. The liquid medicine filling machine according to claim 1, characterized in that, The number of grippers (2) matches the number of openings (4) and they open and close synchronously. Each set of grippers (2) has an arc-shaped groove on its inner side that matches the shape of the opening (4).

4. The liquid medicine filling machine according to claim 1, characterized in that, The stoppering station (B) is equipped with: The first plug head (8) is driven to move by the second lifting cylinder (9) and the first translation cylinder (10), and is connected to a plug feeding device (11) for pressing the plug (12) into the first pipe opening (4). The second plugging head (13) is driven to move by the second lifting cylinder (9) and the first translation cylinder (10), and is connected to a break plug feeding device (14) for pressing the break plug (15) into the second port (4).

5. The liquid medicine filling machine according to claim 4, characterized in that, The plug feeding device (11) includes a plug vibrating plate (17), a plug conveying track (18) and a plug shifting cylinder (19), wherein the plug shifting cylinder (19) sends the plug (12) at the end of the plug conveying track (18) into the first plugging head (8).

6. The liquid medicine filling machine according to claim 4, characterized in that, The broken plug feeding device (14) includes a broken plug vibrating plate (20), a broken plug conveying track (21) and a broken plug shifting cylinder (22), which sends the broken plug (15) at the end of the broken plug conveying track (21) into the second plugging head (13).

7. The liquid medicine filling machine according to claim 4, characterized in that, The first plugging head (8) and the second plugging head (13) adopt a vacuum suction cup or pneumatic gripper structure.

8. The liquid medicine filling machine according to claim 1, characterized in that, The slide (16) is driven by a linear module or by pneumatics, and its translational stroke covers the distance between the liquid injection station (A) and the stoppering station (B).

9. The liquid medicine filling machine according to claim 1 or 8, characterized in that, The slide (16) is equipped with a second translation cylinder (23), which drives the pneumatic clamp (1) to move inward into the liquid injection station (A) or outward out of the stoppering station (B).

10. The liquid medicine filling machine according to claim 1, characterized in that, A baffle (24) is fixed on the pneumatic cylinder of the pneumatic clamp (1). The upper part of the baffle (24) is vertically attached to the pneumatic clamp (1), and the lower part is inclined outward.

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