A nitrogen filling device for medicine bottles

Abstract

This invention relates to the field of pharmaceutical equipment, and more particularly to a nitrogen filling device for medicine bottles. The device includes a frame, on which a nitrogen filling unit is mounted. The nitrogen filling unit includes a positioning shaft fixed to the frame. A rotating shaft, rotatably connected to the frame, is mounted on the frame below the positioning shaft and driven by a motor. A support plate is fixed to the rotating shaft. A turntable is fixed to the rotating shaft above the support plate. Limiting grooves are evenly distributed around the circumference of the turntable, penetrating it. A fixing plate is fixed to the rotating shaft above the turntable. Fixing tubes are fixed to the fixing plate at positions corresponding to the limiting grooves. Each fixing tube has a sliding rod slidably connected to the corresponding fixing tube. A mounting plate is fixed to the bottom of each sliding rod. A nozzle is fixed to the mounting plate, and the nozzle communicates with a nitrogen storage tank via a jet pipe. A positioning rod is fixed to the top of each sliding rod. This device significantly improves the nitrogen filling efficiency of medicine bottles.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical equipment, and more particularly to a nitrogen filling device for medicine bottles. Background Technology

[0002] In the production process of pharmaceuticals, especially injectable drugs, in order to ensure the quality of the drugs, it is necessary to minimize the time and possibility of contact between the drugs and oxygen. Therefore, nitrogen is introduced into the container to remove oxygen and other mixed gases.

[0003] Patent application number CN201922275763.8 discloses a nitrogen filling device for pharmaceuticals, including a support frame, an annular transfer disc, a rotating disc, a lifting nitrogen filling mechanism, a bottle actuation mechanism, a bearing seat, a rotating shaft, a first servo motor, a coupling, a feeding conveyor belt, and a discharging conveyor belt. The support frame is a support frame formed by welding steel pipes. The support frame is circular. The annular transfer disc is mounted on the support frame, and a bearing seat is also mounted on the support frame. The rotating disc is mounted in the bearing seat through a rotating shaft. The first servo motor is mounted at the bottom center of the support frame. The output shaft of the first servo motor is connected to the rotating shaft through a coupling. The rotating disc is arranged on the upper part of the annular transfer disc. Multiple receiving grooves are machined on the annular surface of the rotating disc for accommodating bottles. The lifting nitrogen filling mechanism includes a lifting support column, a lifting rod, an upper mounting plate, a second servo motor, a cam, a nitrogen filling pipe, and a hose. The lifting support column has a through hole. The lifting rod is slidably mounted in the through hole of the lifting support column. The upper mounting plate is fixedly mounted on the top of the lifting rod, and the nitrogen filling pipe is fixedly mounted on the end of the upper mounting plate. The rotating disc can transport the medicine bottles to be filled with nitrogen to the nitrogen filling station, and the nitrogen filling tube of the lifting nitrogen filling mechanism descends to fill the medicine bottles with nitrogen. However, this type of nitrogen filling device has the disadvantages of large workload and low work efficiency, as it transports each medicine bottle to the designated position in turn and fills the nitrogen through a single nitrogen filling tube.

[0004] This invention was developed to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nitrogen filling device for medicine bottles.

[0006] This invention can be achieved through the following technical solutions:

[0007] This invention discloses a nitrogen-filling device for medicine bottles, comprising a frame on which a nitrogen-filling device is mounted. The nitrogen-filling device includes a positioning shaft fixed to the frame. A rotating shaft, rotatably connected to the frame, is mounted on the frame below the positioning shaft and driven by a motor. A support plate is fixed to the rotating shaft. A turntable is fixed to the rotating shaft above the support plate. Limiting grooves are evenly distributed around the circumference of the turntable, penetrating it. A fixing plate is fixed to the rotating shaft above the turntable. Fixing tubes are fixed to the fixing plate at positions corresponding to the limiting grooves. Each fixing tube has a sliding rod slidably connected to its corresponding fixing tube. A mounting plate is fixed to the bottom of each sliding rod. Nozzles are fixed to the mounting plate, and each nozzle communicates with a nitrogen storage tank via a jet pipe. A positioning rod is fixed to the top of each sliding rod. A swing cam is also fixed to the positioning shaft. The swing cam has curved grooves, and the ends of the positioning rods are all positioned within and slidably connected to the curved grooves. The filled medicine bottles are driven by a screw conveyor to move towards the nitrogen filling device. After reaching the end of the conveyor screw, the bottles enter a limiting groove on the turntable. The bottom of the bottles is supported by a support plate. A motor drives a rotating shaft to rotate. As the shaft rotates, the sliding rod rotates with it. Because a positioning rod is fixed to the end of the sliding rod, and the end of the positioning rod slides in a curved groove, the sliding rod gradually descends as the shaft rotates. The mounting plate moves closer to the bottle opening. When the mounting plate reaches the designated position above the bottle, the nozzle is connected to the gas pipe on the nitrogen storage tank through an air jet pipe. The air jet pipe is connected to the gas pipe through a slip ring, and a solenoid valve is fixed on the air jet pipe. When the nozzle reaches the lowest position... Then, the solenoid valve opens the jet pipe, and compressed nitrogen gas is sprayed into the medicine bottle through the nozzle, squeezing out the air inside the bottle. After that, the turntable continues to rotate, and after the mounting plate rises, the nitrogen-filled medicine bottle is transported to the capping machine for capping. After the turntable rotates a certain angle, the next medicine bottle enters the next limit groove on the turntable. During the rotation of the turntable, each medicine bottle rotates to the designated position and is filled with nitrogen through the corresponding nozzle. This device has multiple nozzles evenly arranged above the turntable, and during the rotation of the turntable, the medicine bottles are transported to the limit groove positions one by one. Nitrogen filling is performed on each medicine bottle during the movement of the medicine bottle, which greatly improves the nitrogen filling efficiency of the medicine bottle.

[0008] Preferably, each positioning rod within the curved groove is equipped with a roller. The positioning rod moves within the curved groove via the rollers.

[0009] Preferably, a screw conveyor is also provided on the frame on one side of the nitrogen filling device. The screw conveyor includes a conveyor shaft mounted on the frame, a conveyor screw fixed on the conveyor shaft, and the conveyor screw is also driven to rotate by a motor. A limit rod is fixed on the frame on one side of the conveyor screw. A main gear is fixed at the output end of the motor, a connecting gear is provided on the frame, a driven gear is fixed on the rotating shaft, the main gear meshes with the connecting gear, the connecting gear meshes with the driven gear, a main conveyor sprocket is fixed at the end of the conveyor shaft, a directional shaft is provided on the frame, a driven conveyor sprocket is fixed on the directional shaft, the driven conveyor sprocket is wound around the main conveyor sprocket via a conveyor chain, a guide shaft is also provided on the frame, bevel teeth are fixed at corresponding positions on the guide shaft and the directional shaft, the two bevel teeth mesh with each other, a rotating driven sprocket is also fixed on the guide shaft, and a rotating main sprocket is also fixed on the rotating shaft, the rotating main sprocket is wound around the rotating driven sprocket via a rotating chain. After the medicine bottle enters the spiral groove of the conveying screw, the conveying shaft is driven to rotate by the motor. Due to the blocking of the limit rod, the medicine bottle moves forward with the rotation of the conveying screw. The medicine bottles can be conveyed to the designated position in sequence, and the medicine bottles move forward at intervals of a certain distance, and the medicine bottles are conveyed one by one into the limit groove of the turntable.

[0010] Preferably, a baffle is also fixed on the frame on one side of the turntable. The baffle is located on one side of the turntable, and the medicine bottle rotates with the turntable by blocking the rotation of the turntable.

[0011] Compared with existing technologies, the present invention has the following advantages:

[0012] This device has multiple nozzles evenly arranged above the turntable, and during the rotation of the turntable, it transports the medicine bottles one by one to the limiting groove position. During the movement of the medicine bottles, nitrogen filling is performed on each medicine bottle, which greatly improves the nitrogen filling efficiency of the medicine bottles. Attached Figure Description

[0013] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the location and structure of the nitrogen filling device of the present invention;

[0016] Figure 3 This is a schematic diagram of the nitrogen filling device of the present invention from another angle;

[0017] Figure 4 This is a structural schematic diagram showing the location of the motor in this invention;

[0018] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0019] In the diagram: 1. Frame; 2. Nitrogen filling device; 201. Positioning shaft; 202. Rotating shaft; 203. Fixing plate; 204. Fixing pipe; 205. Slide rod; 206. Turntable; 207. Limiting groove; 208. Mounting plate; 209. Nozzle; 210. Cam; 211. Curved groove; 212. Positioning rod; 213. Roller; 3. Screw conveyor; 301. Conveyor shaft; 302. Conveyor screw; 303. Conveyor main sprocket; 304. Conveyor driven sprocket; 305. Guide shaft; 306. Rotating driven sprocket; 307. Rotating main sprocket; 308. Rotating chain; 309. Conveyor chain; 310. Directional shaft; 4. Baffle; 5. Motor; 501. Main gear; 502. Driven gear; 503. Connecting gear; 6. Medicine bottle; 7. Capping machine; Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0021] Example 1:

[0022] like Figures 1 to 5As shown, this embodiment discloses a nitrogen filling device for medicine bottles, including a frame 1. A nitrogen filling device 2 is mounted on the frame 1. The nitrogen filling device 2 includes a positioning shaft 201 fixed on the frame 1. A rotating shaft 202, rotatably connected to the frame 1, is mounted on the frame 1 below the positioning shaft 201. The rotating shaft 202 is driven to rotate by a motor 5. A support plate is fixed on the rotating shaft 202. A turntable 206 is fixed on the rotating shaft 202 above the support plate. Limiting grooves 207 are evenly arranged on the circumference of the turntable 206, penetrating the turntable 206. A fixing plate 203 is fixed on the rotating shaft 202 above the turntable 206. Fixed pipes 204 are fixed on the fixed plate 203 at positions corresponding to the limiting grooves 207. Each fixed pipe 204 is provided with a slide rod 205 that is slidably connected to the corresponding fixed pipe 204. An mounting plate 208 is fixed at the bottom of the slide rod 205. A nozzle 209 is fixed on the mounting plate 208. The nozzle 209 is connected to the nitrogen storage tank through a jet pipe. A positioning rod 212 is fixed at the top of the slide rod 205. A swing cam 210 is also fixed on the positioning shaft 201. A curved groove 211 is provided on the swing cam 210. The ends of the positioning rods 212 are all located in the curved groove 211 and are slidably connected to the curved groove 211. The medicine bottle 6, filled with medicine, is driven by the screw conveyor 3 to move towards the nitrogen filling device 2. After reaching the end of the conveying screw 302, the medicine bottle 6 enters a limiting groove 207 of the turntable 206. The bottom of the medicine bottle 6 is supported by a support plate. The rotating shaft 202 is driven to rotate by the motor 5. When the rotating shaft 202 rotates, the sliding rod 205 rotates with the rotating shaft 202. Since the end of the sliding rod 205 is fixed with a positioning rod 212, and the end of the positioning rod 212 slides in the curved groove 211, the sliding rod 205 gradually descends when the rotating shaft 202 rotates. The mounting plate 208 moves closer to the mouth of the medicine bottle 6. When the mounting plate 208 reaches the designated position above the medicine bottle 6, the nozzle 209 is connected to the gas pipe on the nitrogen storage tank through the air jet pipe, and the air jet pipe is connected to the gas pipe through a slip ring. Solenoid valves are fixed on the air jet pipe. When the nozzle 209... After reaching the lowest position, the solenoid valve opens the jet pipe, and compressed nitrogen gas is sprayed into the medicine bottle 6 through the nozzle 209, squeezing out the air inside the medicine bottle 6. Then, the turntable 206 continues to rotate, and after the mounting plate 208 rises, the medicine bottle filled with nitrogen is transported to the capping machine 7 for capping. After the turntable 206 rotates a certain angle, the next medicine bottle 6 enters the upper and lower limit grooves 207 of the turntable 206. During the rotation of the turntable 206, after each medicine bottle 6 rotates to the designated position, it is filled with nitrogen through the corresponding nozzle 209. This device has multiple nozzles 209 evenly arranged above the turntable 206, and during the rotation of the turntable 206, the medicine bottles 6 are transported one by one to the position of the limit groove 207. During the movement of the medicine bottles 6, each medicine bottle 6 is filled with nitrogen, which greatly improves the nitrogen filling efficiency of the medicine bottles 6.

[0023] Among them, a screw conveyor 3 is also provided on the frame 1 on one side of the nitrogen filling device 2. The screw conveyor 3 includes a conveying shaft 301 set on the frame 1. A conveying screw 302 is fixed on the conveying shaft 301. The conveying screw 302 is also driven to rotate by the motor 5. A limit rod is fixed on the frame 1 on one side of the conveying screw 302. A main gear 501 is fixed at the output end of motor 5. A connecting gear 503 is provided on the frame 1. A driven gear 502 is fixed on the rotating shaft 202. The main gear 501 meshes with the connecting gear 503, and the connecting gear 503 meshes with the driven gear 502. A main conveying sprocket 303 is fixed at the end of the conveying shaft 301. A directional shaft 310 is provided on the frame 1. A driven conveying sprocket 304 is fixed on the directional shaft 310. The driven conveying sprocket 304 is connected to the main conveying sprocket 303 via a conveying chain 309. A guide shaft 305 is also provided on the frame 1. Bevel teeth are fixed at corresponding positions on the guide shaft 305 and the directional shaft 310. The two bevel teeth mesh with each other. A rotating driven sprocket 306 is also fixed on the guide shaft 305. A rotating main sprocket 307 is also fixed on the rotating shaft 202. The rotating main sprocket 307 is connected to the rotating driven sprocket 306 via a rotating chain 308. After the medicine bottle 6 enters the spiral groove position of the conveying screw 302, the conveying shaft 301 is driven to rotate by the motor 5. Due to the blocking of the limit rod, the medicine bottle 6 moves forward with the rotation of the conveying screw 302, and the medicine bottle 6 can be conveyed to the designated position in sequence. The medicine bottles 6 move forward at intervals of a certain distance, and the medicine bottles 6 are conveyed one by one into the limit groove 207 of the turntable 206.

[0024] A baffle 4 is also fixed on the frame 1 on one side of the turntable 206. The baffle 4 is set on one side of the turntable 206, and the medicine bottle 6 is blocked by the turntable 206 as it rotates.

[0025] Example 2:

[0026] This embodiment discloses a nitrogen-filling device for medicine bottles. Based on the structure and principle of Embodiment 1, each positioning rod 212 in the curved groove 211 of this embodiment is equipped with a roller 213. The positioning rod 212 moves within the curved groove 211 via the roller 213.

[0027] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the scope of protection of the present invention.

Claims

1. A nitrogen filling apparatus for a vial comprising a frame, wherein, The frame is equipped with a nitrogen filling device, which includes a positioning shaft fixed to the frame. Below the positioning shaft, on the frame, is a rotating shaft rotatably connected to the frame. The rotating shaft is driven by a motor. A support plate is fixed to the rotating shaft. Above the support plate, on the rotating shaft, is a turntable. Limiting grooves are evenly distributed around the circumference of the turntable, penetrating the turntable. Above the turntable, on the rotating shaft, is a fixing plate. Fixing tubes are fixed on the fixing plate at positions corresponding to the limiting grooves. Each fixing tube has a sliding rod slidably connected to the corresponding fixing tube. A mounting plate is fixed to the bottom of each sliding rod. A nozzle is fixed on the mounting plate. The nozzle is connected to a nitrogen storage tank through a jet pipe. A positioning rod is fixed to the top of the sliding rod. A swing cam is also fixed to the positioning shaft. The swing cam has curved grooves. The ends of the positioning rods are all located within the curved grooves and slidably connected to the curved grooves.

2. The nitrogen filling apparatus for a vial according to claim 1, characterized by: Rollers are provided on the positioning rods inside the curved groove.

3. The nitrogen filling apparatus for a vial according to claim 1, wherein: A screw conveyor is also provided on the frame on one side of the nitrogen filling device. The screw conveyor includes a conveyor shaft set on the frame, a conveyor screw fixed on the conveyor shaft, and the conveyor screw is also driven to rotate by a motor. A limit rod is fixed on the frame on one side of the conveyor screw.

4. The nitrogen filling apparatus for a vial according to claim 1, wherein: A baffle is also fixed on the frame on one side of the turntable.

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