CN115489771B - Airless split charging method for powder filling - Google Patents
Airless split charging method for powder filling Download PDFInfo
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- CN115489771B CN115489771B CN202211191992.1A CN202211191992A CN115489771B CN 115489771 B CN115489771 B CN 115489771B CN 202211191992 A CN202211191992 A CN 202211191992A CN 115489771 B CN115489771 B CN 115489771B
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- pipe
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- 239000000843 powder Substances 0.000 title claims abstract description 251
- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 117
- 238000003780 insertion Methods 0.000 claims abstract description 62
- 230000037431 insertion Effects 0.000 claims abstract description 62
- 230000033001 locomotion Effects 0.000 claims description 59
- 230000002093 peripheral effect Effects 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000004806 packaging method and process Methods 0.000 claims description 12
- 230000008602 contraction Effects 0.000 claims description 6
- 238000005381 potential energy Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012840 feeding operation Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005429 filling process Methods 0.000 abstract description 9
- 239000000945 filler Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 description 13
- 229930182555 Penicillin Natural products 0.000 description 12
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 12
- 229940049954 penicillin Drugs 0.000 description 12
- 238000013461 design Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 241001631457 Cannula Species 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/20—Reducing volume of filled material
- B65B1/24—Reducing volume of filled material by mechanical compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
- B65B1/36—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
- B65B39/12—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers movable towards or away from container or wrapper during filling or depositing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Basic Packing Technique (AREA)
Abstract
According to the airless split charging method for powder filling, a powder tray is arranged on a frame; the filling pipe assembly comprises a filling insertion pipe and a filling push rod arranged in the filling insertion pipe, and a single filling material accommodating space is formed in the filling insertion pipe and in a space between the bottom of the filling insertion pipe and the bottom of the filling push rod; a filler pipe assembly driving mechanism; compared with the existing airless split charging equipment in the background art, the application omits the pre-filling process, so that the structure is simpler, the reliability is strong, vacuum and compressed gas are not needed in the whole working process, a filter element or a filter is not needed to be installed, the various defects existing in screw or airflow filling are avoided, the whole working process is controllable in loading quantity, high in precision, energy-saving and environment-friendly, and great economic and social benefits are realized; because the equipment of this application only needs once to fill, this is less to the powder influence, and the powder dish volume can be done less saving material, and filling subassembly simple structure easily realizes, convenient popularization and application.
Description
Technical Field
The invention relates to the technical field of material split charging, in particular to a gas-free split charging method for powder filling.
Background
Known conventional aseptic powder filling (sub-packaging) uses either screw or air-flow filling techniques, which are in turn divided into rotary drums (wheels) and metering tubes. The screw filling can realize dust-free filling, but the powder with extremely good fluidity is easy to adhere and block because of the uncontrolled powder leakage problem of the powder with extremely good fluidity due to different powder flowabilities and poor stability of the filling amount in the screw filling process, so the application range is very limited in use. The conventional air flow filling of a rotary drum (wheel) and a metering tube is carried out by adopting a vacuum filling compressed air blowing filling mode, larger dust is generated by air blowing in the filling process, a dust removing device is arranged but the environment is inevitably polluted, meanwhile, a filter element or a filter which is contacted with powder in a pipeline is limited by the aperture, the powder with very small particle size is easy to permeate the filter element or the filter to cause powder loss or the proportion imbalance of mixed powder, the filter element or the filter is easy to block during long operation time and needs to be replaced frequently, the problem of small application range exists, and the energy consumption is larger due to the application of vacuum and compressed air in the working process;
Secondly:
the powder airless split charging equipment comprises an equipment body, wherein a charging tray is arranged on the equipment body, the charging tray is rotatably arranged on the equipment body, a feeding pipe for feeding the charging tray is arranged in the charging tray, and a charging tray driving mechanism for driving the charging tray to rotate is arranged on the equipment body; the inlet ends of the metering pipes are communicated with the inner wall of the bottom surface of the material tray, and the outlet ends of the metering pipes are provided with a discharging control mechanism for controlling the discharge of materials; a preassembling station and a packing station are sequentially formed above the material tray according to the rotation direction of the material tray, the interior of the material tray below the preassembling station is correspondingly formed with a preassembling area, and the interior of the material tray below the packing station is correspondingly formed with a packing area; the device comprises a preassembling rod group arranged in a preassembling station and a packing rod group arranged in a packing station, wherein the device body is provided with a preassembling lifting mechanism for lifting the preassembling rod group and a packing lifting mechanism for lifting the packing rod group, the preassembling rod group is lifted through the preassembling lifting mechanism so as to press and convey materials in a material tray into a metering pipe, and the materials in the metering pipe are pressed for a plurality of times through the lifting of the subsequent preassembling rod group; the scraping plate is arranged in the sub-packaging area, and is provided with a scraping plate driving mechanism which drives the scraping plate to reciprocate in the tray according to an arc track so as to push redundant materials above the inlet end of the metering tube in the sub-packaging area to the pre-packaging area below the feeding tube; a material metering unit for detecting blanking quantity is arranged between the equipment body and the outlet end of the metering pipe below the split charging area. The tray driving mechanism comprises; the upper end of the tray driving shaft is set as a fixed end fixedly connected with the tray, and the lower end of the tray driving shaft is set as a power input end of the tray driving shaft; the power output end is in transmission connection with the power input end of the tray driving shaft, and the tray rotating driving mechanism provides rotating force for the tray. The feed pipe comprises; the lower end of the hopper is arranged in the preassembling station; the stirring mechanism is arranged in the hopper and comprises a stirring shaft, the lower end of the stirring shaft is arranged in a discharge hole of the hopper, a stirring shaft rotation driving mechanism for driving the stirring shaft to rotate is arranged on the inner wall of the top of the hopper, the power output end of the stirring shaft rotation driving mechanism is in transmission connection with the upper end of the stirring shaft so as to provide rotation force for the stirring shaft, and stirring helical blades are fixedly arranged on the peripheral surface of the lower end of the stirring shaft; the outer wall of the top of the hopper is connected with the equipment body through a rod piece connected with the top surface of the equipment body. The discharging control mechanism comprises; the U-shaped gate is arranged on the outer peripheral surface of the lower end of the metering tube, the U-shaped gate consists of a transverse plate and two pairs of vertical plates vertically arranged on the top surface of the transverse plate, the lower end of the metering tube is positioned between the two pairs of vertical plates, the inner wall of one pair of vertical plates is connected with the outer peripheral surface of the lower end of the metering tube in a sliding fit manner, the inner wall of one vertical plate of the other pair of vertical plates is abutted to the outer peripheral surface of the lower end of the metering tube, a pressure spring installation gap is reserved between the other vertical plate and the outer peripheral surface of the lower end of the metering tube, a pressure spring is arranged in the pressure spring installation gap, and a blanking hole matched with the metering tube is formed in the transverse plate in the pressure spring installation gap; the U-shaped gate pushing mechanism is arranged on the equipment body below the sub-packaging station and comprises a lifting screw, a lifting block is arranged on the lifting screw, a lifting guide rod is arranged on the lifting block, and the top of the lifting guide rod is formed into an arc-shaped surface for pushing the U-shaped gate to compress the pressure spring. The preassembled rod group comprises; the upper preassembling rod is parallel to the metering tube below the upper preassembling rod, and the lower end of the upper preassembling rod is right opposite to the upper end of the metering tube below the upper preassembling rod; the lower preassembling rod is detachably connected with the lower end of the upper preassembling rod, the lower preassembling rod is parallel to the metering tube below the lower preassembling rod, and the lower end of the lower preassembling rod is right opposite to the upper end of the metering tube below the lower preassembling rod; the device comprises an upper preassembly rod, a lower preassembly rod, a preassembly driving rod adjusting nut, a spring, a lower driving rod adjusting nut, a spring and a connecting rod, wherein the upper preassembly driving rod and the lower preassembly rod are driven to move along the vertical direction; a dirt receiving groove sleeved on the peripheral surface of the upper preassembly rod is arranged between the lower end of the spring and the upper end of the lower preassembly rod, and the notch of the dirt receiving groove is vertically upwards arranged; one end of the preassembly driving rod is connected with the upper preassembly rod, and the other end of the preassembly driving rod is in transmission connection with the lifting end of the preassembly lifting mechanism; the top surface of the equipment body is fixedly provided with a preassembly guide rod, and the preassembly guide rod penetrates through the preassembly driving rod so as to guide the lifting of the preassembly driving rod. The split charging rod group comprises; the upper split charging rod is parallel to the metering tube below the upper split charging rod, and the lower end of the upper split charging rod is right opposite to the upper end of the metering tube below the upper split charging rod; the lower split charging rod is detachably connected with the lower end of the upper split charging rod, the lower split charging rod is parallel to the metering tube below the lower split charging rod, and the lower end of the lower split charging rod is right opposite to the upper end of the metering tube below the lower split charging rod; a split charging driving rod for driving the upper split charging rod and the lower split charging rod to move along the vertical direction, wherein the split charging driving rod is sleeved on the outer peripheral surface of the upper split charging rod, and a split charging driving rod adjusting nut for limiting the split charging driving rod between the upper split charging rod and the lower split charging rod is arranged at the upper end of the upper split charging rod; one end of the split charging driving rod is connected with the upper split charging rod, and the other end of the split charging driving rod is in transmission connection with the lifting end of the split charging lifting mechanism; and a split charging guide rod is fixedly arranged on the top surface of the equipment body, penetrates through the split charging driving rod to guide the lifting of the split charging driving rod. The lower end of the scraping plate and the bottom surface and the inner side surface of the material tray are reserved with a moving gap for moving during the scraping of the scraping plate. The device comprises a device body, wherein a smoothing mechanism for controlling the height of materials in the material tray is arranged on the device body and comprises a smoothing plate, and the smoothing plate is arranged in a preassembling area below the hopper. The scraping plate driving mechanism comprises a scraping plate driving shaft which penetrates through the tray driving shaft and is arranged concentrically with the tray driving shaft, the scraping plate driving shaft is rotationally connected with the tray driving shaft, the top end of the scraping plate driving shaft extends out of the tray driving shaft, and the outer peripheral surface of the scraping plate driving shaft is fixedly connected with the side surface of the scraping plate;
The product belongs to a lower filling mode, and a complete filling process needs to be preassembled for a plurality of times when in use;
the application provides a powder filling airless split charging method which does not adopt a lower filling mode any more, only needs one-time preassembling in a complete filling process, has small influence on powder and can greatly reduce the volume of a powder tray.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a powder filling airless split charging method which does not adopt a lower filling mode any more, only needs one-time preassembly in a complete filling process, has small influence on powder and can greatly reduce the volume of a powder tray.
The technical problem to be solved by the invention is realized by the following technical proposal that the airless split charging method for powder filling comprises airless split charging equipment which comprises a frame, wherein the frame is provided with,
the powder tray is internally provided with a space for containing powder, and the motion track of the powder tray is circular motion rotating around the axis of the powder tray;
the filling pipe assembly comprises a filling insertion pipe and a filling push rod arranged in the filling insertion pipe, and a single filling material accommodating space is formed in the filling insertion pipe and in a space between the bottom of the filling insertion pipe and the bottom of the filling push rod;
The power output end of the filling tube assembly driving mechanism is in transmission connection with the filling tube assembly to drive the filling tube assembly to obtain single filling materials from the powder disc and then transfer the single filling materials into a container outside the powder disc,
the powder tray is internally provided with a powder baffle plate and a material level control member, wherein the bottom surface of the material level control member is contacted with powder when the powder tray rotates so as to control the material level, a material taking area is formed in an area enclosed between the powder baffle plate and the material level control member in the powder tray, and the other area is a material feeding area;
the method for carrying out airless split charging by the airless split charging equipment comprises the following steps:
(1) Feeding:
firstly, carrying out feeding operation, namely feeding materials into a feeding area of a powder disc through external equipment, stirring the materials while rotating the powder disc during feeding, and stopping feeding when the materials reach a detection position of a material level sensor;
(2) And (3) controlling the material level:
the height of the material level control member is adjusted to enable the distance from the bottom of the material level control member to the bottom of the powder tray to reach a preset position, and the bottom of the material level control member is continuously contacted with upper powder during the rotation of the powder tray and limits the material level;
(3) Taking and split charging of the filling pipe assembly:
(3.1) taking: the powder disk is driven to rotate at a rated angle: the rotation angle of the powder tray is (120+/-10 degrees) multiplied by N, wherein N is an integer of 1, 2 and 3 … …, the filling push rod and the filling insertion pipe are driven by the filling pipe assembly driving mechanism to move to the position right above the material taking area, and then the filling push rod and the filling insertion pipe are driven by the filling pipe assembly driving mechanism to simultaneously descend until the bottom surface of the filling insertion pipe contacts with the bottom surface of the powder tray and the filling push rod descends to a rated distance, and the rated distance is the descending stroke of the filling push rod when powder is filled in a single filling material accommodating space and the bottom surface of the filling push rod abuts against the part of powder, and at the moment, the filling pipe assembly finishes the material taking action;
(3.2) sub-packaging:
the filling push rod and the filling insertion tube are driven to ascend through the filling tube assembly driving mechanism and move to the bottle mouth of the sterile container for injection such as a penicillin bottle, a preassembled syringe and the like, and the filling push rod is driven to descend through the filling tube assembly driving mechanism again and pushes powder in the single filling material accommodating space to the sterile container for injection such as the penicillin bottle, the preassembled syringe and the like, so that single packaging operation is completed;
(4) Repeating the steps (3.1) - (3.2) to perform multiple filling operations.
The technical problem to be solved by the invention can be also realized by the following technical scheme, the airless split charging method for powder filling is characterized in that an exhaust mechanism is arranged between the filling insertion pipe and the filling push rod, the exhaust mechanism comprises,
an inner diameter-changing expansion part formed on the inner peripheral surface of the lower part of the filling cannula, wherein the inner diameter of the inner diameter-changing expansion part gradually increases from top to bottom;
an outer diameter variable diameter shrinkage part formed on the outer peripheral surface of the middle part of the filling push rod;
the minimum inner diameter of the filling cannula at the inner diameter-variable expansion part is larger than the maximum outer diameter of the filling push rod at the outer diameter-variable contraction part, and a gap between the inner peripheral surface of the filling cannula and the outer peripheral surface of the filling push rod forms an exhaust gap for exhausting the filling tube assembly during the process of acquiring single filling materials.
The technical problem to be solved by the invention can be realized by the following technical scheme, the airless split charging method for powder filling comprises the steps of,
the filling pipe driving mechanism comprises a filling pipe vertical moving assembly with one end being a fixed end and the other end being a movable end, and the movable end of the filling pipe vertical moving assembly is connected with the top end of the filling pipe to drive the filling pipe to vertically move;
the filling push rod driving mechanism comprises a filling push rod vertical movement assembly with one end being a fixed end and the other end being a movable end, and the movable end of the filling push rod vertical movement assembly is connected with the top end of the filling push rod to drive the filling push rod to vertically move;
the displacement driving mechanism is used for driving the filling pipe assembly to move to the container to be filled and comprises a rotary power mechanism in transmission connection with the fixed end of the filling pipe vertical movement assembly and the fixed end of the filling push rod vertical movement assembly or a transverse movement power mechanism respectively arranged between the top end of the filling pipe and the movable end of the filling pipe vertical movement assembly and between the filling push rod and the movable end of the filling push rod vertical movement assembly.
The technical problem to be solved by the invention can be realized by the following technical proposal, the airless split charging method for powder filling comprises that the filling cannula driving mechanism comprises,
elastic elements which are arranged between the filling push rod and the filling insertion pipe and act on the filling push rod and the filling insertion pipe in opposite directions by elastic potential energy, wherein the contraction or extension direction of the elastic elements is the same as the movement direction of the filling push rod and the filling insertion pipe;
limiting the filling cannula in the vertical moving direction so that when the bottom end of the filling cannula is contacted with the bottom surface of the powder disc or the bottom end of the filling cannula is positioned at the container mouth, the elastic element is contracted, and the filling push rod extrudes or pushes the limiting part of the filling cannula for a single filling material through the elastic potential energy, and the limiting part is fixed on the frame;
the displacement driving mechanism comprises a rotary power mechanism with a rotary power output end in transmission connection with a fixed end of the filling push rod vertical movement assembly or a transverse movement power mechanism arranged between the filling push rod and a movable end of the filling push rod vertical movement assembly.
The technical problem to be solved by the invention can also be achieved by the following technical scheme, in the airless split charging method for powder filling, a filling insertion tube is arranged on the filling insertion tube, a filling push rod seat is arranged on the filling push rod and is positioned above the filling insertion tube seat, the filling insertion tube is fixed on the filling insertion tube seat, the filling push rod is fixed on the filling push rod seat, a plurality of vertical guide rods with top ends penetrating through the filling push rod seat are fixedly arranged on the filling insertion tube seat, and the elastic elements are arranged on the outer peripheral surfaces of the vertical guide rods or the outer peripheral surfaces of the filling push rods between the filling insertion tube seat and the filling push rod seat.
The technical problem to be solved by the invention can be also realized by the following technical proposal, the airless split charging method for filling powder is characterized in that a powder tray cover is arranged above a powder tray on a frame and provided with,
the powder supply port is positioned right above the feeding area;
a level control member mounting seat for controlling the level control member height;
the bottom of the powder baffle is arranged in the powder tray, and the top of the powder baffle is connected with the powder tray cover.
The technical problem to be solved by the invention can also be achieved by the following technical scheme, and the airless split charging method for powder filling is characterized in that a stirring piece for stirring powder in a feeding area is arranged on a powder tray cover.
The technical problem to be solved by the invention can be further solved by the following technical scheme, and the airless split charging method for powder filling is characterized in that a material level sensor for detecting the material level in the powder tray is arranged on the powder tray cover.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) Compared with the existing airless split charging equipment in the background art, the air-free split charging equipment omits a pre-filling process, has simpler structure and strong reliability, does not need vacuum or compressed air in the whole working process, does not need to install a filter element or a filter, does not have various defects in screw or air flow filling, has controllable filling amount in the whole working process, has high precision, saves energy and is environment-friendly, and has larger economic and social benefits; the equipment of the application only needs to be filled once, so that the influence on powder is smaller, the volume of a powder disc can be smaller, materials are saved, the filling assembly is simple in structure, easy to realize and convenient to popularize and apply, and due to the structural design characteristics, the system is particularly suitable for filling sterile powder into sterile containers for injection such as glass bottles (such as penicillin bottles) preloaded syringes and the like, and is also suitable for filling production equipment in a transmission mode such as a straight rack or a rotary table;
(2) The inner diameter variable diameter expansion part of the filling cannula of the filling system can enable the soft and non-compact round column to be formed in the filling cannula when the filling cannula contacts and compresses powder, and when the filling push rod fills the powder in the filling cannula into the sterile containers for injection such as glass bottles (e.g. penicillin bottles) to be filled, preassembled syringes and the like, the powder can be quickly separated from the inner wall of the filling cannula and falls into the front of the bottom of the sterile containers for injection such as the glass bottles (e.g. penicillin bottles) to be filled, the preassembled syringes and the like, and the powder is relatively complete in shape, so that dust is avoided in the filling process;
(3) The bottom of the filling cannula is in an inner diameter variable diameter expansion shape, namely, the wall of the bottom of the filling cannula is thinner and thinner along with the gradual expansion of the inner diameter, so that the contact surface of the bottommost end of the filling cannula and the bottom surface of the powder disk is smallest as possible, on one hand, the phenomenon that the powder contacted with the mouth of the filling cannula is compressed at the bottom of the powder disk groove to influence the next filling and on the other hand, the mouth of the pipe is stuck with the powder can be reduced, and equipment is polluted or the filling quantity is influenced;
(4) The setting of material level control can make the powder dish bottom constantly with powder contact when rotating for the material level in the powder dish is in same height all the time, guarantees that the filler of powder is the same at every turn.
Drawings
FIG. 1 is a schematic view of a portion of a front view structure of the present invention;
FIG. 2 is a schematic structural view of a filling tube assembly with a resilient element;
FIG. 3 is a schematic view of another spring element mounting location of FIG. 2;
FIG. 4 is a schematic view of the filling tube assembly of FIG. 1 with the displacement driving mechanism being a rotational motion path;
FIG. 5 is a schematic view of the filling tube assembly of FIG. 2 with the displacement driving mechanism being a rotational motion path;
FIG. 6 is a schematic view of the filling tube assembly of FIG. 3 with the displacement driving mechanism being a rotational motion path;
FIG. 7 is a schematic view of the structure of FIG. 1 employing two sets of filling tube assemblies;
FIG. 8 is a schematic view of the structure of FIG. 2 employing two sets of filling tube assemblies;
FIG. 9 is a schematic view of the structure of FIG. 3 employing two sets of filling tube assemblies;
FIG. 10 is a schematic view of the structure of the filling push rod;
FIG. 11 is a schematic view of the structure of a filling cannula;
FIG. 12 is a schematic view of the assembled structure of the filling push rod and filling cannula;
fig. 13 is a schematic top view of the powder pan cover, the powder baffle, the level control and the level control mounting base.
In the figure, 1, a rack; 2. a powder tray; 3. filling and inserting a pipe; 4. filling the push rod; 5. a single charge accommodation space; 6. an inner diameter-variable expansion portion; 7. an outer diameter reducing shrinkage portion; 8. the filling insertion pipe vertically moves the assembly; 9. the filling push rod vertically moves the assembly; 10. a lateral movement power mechanism; 11. an elastic element; 12. a limiting piece; 13. a protrusion; 14. filling a socket; 15. filling a push rod seat; 16. a vertical guide rod; 17. a powder baffle plate; 18. a level control; 19. a powder tray cover; 20. a powder supply port; 21. a material level control member mounting seat; 22. a stirring member; 23. a level sensor; 24. a through hole; 25. a material taking area; 26. a charging area.
Detailed Description
Specific embodiments of the invention will be further described below with reference to the accompanying drawings, in order to facilitate a further understanding of the invention by those skilled in the art, without limiting the scope of the claims thereto.
Embodiment 1, referring to fig. 1, an airless dispensing method of powder filling includes a frame 1, a first container provided on the frame 1,
the powder tray 2 is internally provided with a space for containing powder, the movement track of the powder tray 2 is circular movement rotating around the axis of the powder tray 2, the rotation direction of the powder tray 2 can be selected according to the use requirement, and the movement speed of the powder tray 2 for circular movement can be selected according to the use requirement;
as shown in the figure, one of the powder trays 2 is a powder tray 2 with a ring-shaped cross section, the top of the powder tray 2 is arranged in an open hollow structure, and the bottom surface of the middle part of the powder tray 2 can be driven to rotate by an external rotary power mechanism such as a servo motor and the like to do circular motion;
the filling pipe assembly comprises a filling insertion pipe 3 and a filling push rod 4 arranged in the filling insertion pipe 3, wherein a single filling material accommodating space 5 is formed in the filling insertion pipe 3 and positioned between the bottom of the filling insertion pipe 3 and the bottom of the filling push rod 4;
the power output end of the filling tube assembly driving mechanism is in transmission connection with the filling tube assembly to drive the filling tube assembly to obtain single filling materials from the powder disc 2 and then transfer the single filling materials into a container outside the frame 1, wherein the container can be a glass bottle (such as a penicillin bottle), a preloaded injector and other sterile containers for injection;
The powder tray 2 is internally provided with a powder baffle 17 and a material level control member 18, wherein the bottom surface of the material level control member is contacted with powder to control the height of the material level when the powder tray 2 rotates, the material level control member 18 is in a plate-shaped structure, the bottom surface of the material level control member can be in arc-shaped arrangement, the purpose is that when the powder tray 2 rotates, the bottom surface of the material level control member 18 can generate scraping or smoothing action with the powder, the height of the material level in the powder tray 2 can be almost consistent after intermittent feeding, the powder baffle 17 can also be designed into a plate-shaped structure, the design purpose is that when feeding is carried out, the additionally added powder cannot enter a material taking area 25 due to the obstruction of the powder baffle 17, the material level in the filling tube assembly is ensured not to be changed in the material taking period of the powder tray 2 to a certain extent, the material taking area 25 is formed by an area enclosed between the powder baffle 17 and the material level control member 18 in the powder tray 2, and the other area is a feeding area 26.
The method for carrying out airless split charging by the airless split charging equipment comprises the following steps:
(1) Feeding:
firstly, carrying out feeding operation, namely feeding materials into a feeding area of a powder disk 2 through external equipment, stirring the materials while feeding the materials during the feeding period, and stopping feeding when the materials reach a detection position of a material level sensor;
(2) And (3) controlling the material level:
the height of the material level control member 18 is adjusted to enable the distance from the bottom of the material level control member 18 to the bottom of the powder tray to reach a preset position, and the bottom of the material level control member 18 is continuously contacted with upper powder during the rotation of the powder tray 2 and limits the material level;
(3) Taking and split charging of the filling pipe assembly:
(3.1) taking:
the powder disk 2 is driven to rotate at a rated angle: the rotation angle of the powder tray 2 is (120 DEG + -10 DEG) multiplied by N, wherein N is an integer of 1, 2 and 3 … …, the filling push rod 4 and the filling insertion tube 3 are driven by the filling tube assembly driving mechanism to move to the position right above the material taking area 25, and then the filling push rod 4 and the filling insertion tube 3 are driven by the filling tube assembly driving mechanism to simultaneously descend until the bottom surface of the filling insertion tube 3 contacts with the bottom surface of the powder tray 2 and the filling push rod 4 descends to a rated distance, and the rated distance is the descending stroke of the filling push rod 4 when powder is filled in the single filling material accommodating space 5 and the bottom surface of the filling push rod 4 abuts on the part of powder, and the filling tube assembly finishes the material taking action at the moment;
(3.2) sub-packaging:
the filling push rod 4 and the filling insertion tube 3 are driven to ascend through the filling tube assembly driving mechanism and move to the bottle mouth of the sterile container for injection such as a penicillin bottle, a preassembled syringe and the like, and the filling push rod 4 is driven to descend through the filling tube assembly driving mechanism again and push powder in the single filling material accommodating space 5 to the sterile container for injection such as the penicillin bottle, the preassembled syringe and the like, so that single packaging operation is completed at the moment;
(4) Repeating the steps (3.1) - (3.2) to perform multiple filling operations.
Embodiment 2, referring to fig. 10 to 12, in the airless dispensing method for powder filling according to embodiment 1, a venting mechanism is provided between the filling cannula 3 and the filling push rod 4, and the venting mechanism includes,
an inner diameter-changing expansion part 6 formed on the inner peripheral surface of the lower part of the filling pipe 3, the inner diameter of which gradually increases from top to bottom;
the inner diameter reducing expansion part 6 is a truncated cone (horn mouth) with gradually increased inner diameter from top to bottom and enables powder formed in the truncated cone to form a gentle slope, and is characterized in that the filling cannula 3 of the part is in a state that the tube wall of the filling cannula 3 is gradually thinner from top to bottom, namely the thickness of the tube wall at the bottom end of the filling cannula 3 is the thinnest, the contact surface of the bottommost end of the filling cannula 3 and the bottom surface of the powder disc 2 is the smallest as possible, the thickness of the contact surface is close to the cutting edge of a cutter, and the tube orifice of the filling cannula is also called as a cutting edge type tube orifice, so that on one hand, the fact that powder contacted with the tube orifice of the filling cannula 3 is compacted at the bottom of a powder disc groove to influence next filling is avoided, on the other hand, the tube orifice sticky powder is reduced, and equipment is polluted or the filling quantity is influenced, and the specific inner diameter value of the filling cannula can be selected according to use requirements;
An outer diameter-variable shrinkage portion 7 formed on the outer peripheral surface of the middle portion of the filling push rod 4;
the outer diameter reducing and shrinking part 7 is an outer diameter or an inner diameter which is reduced at the same time, namely, a certain gap is reserved between the outer peripheral surface of the filling push rod 4 of the part and the filling insertion tube 3, and the size of the gap can be customized according to the use requirement;
the minimum inner diameter of the filling insertion tube 3 positioned at the inner diameter-changing expansion part 6 is larger than the maximum outer diameter of the filling push rod 4 positioned at the outer diameter-changing contraction part 7, and a gap between the inner peripheral surface of the filling insertion tube 3 and the outer peripheral surface of the filling push rod 4 forms an exhaust gap for exhausting the filling tube assembly during the process of obtaining single filling materials, that is, a certain gap is always reserved between the outer peripheral surface of the filling push rod 4 and the filling insertion tube 3, and the exhaust gap formed by the gap can enable gas in the filling insertion tube 3 to be naturally exhausted from the exhaust gap during the compression period when the filling push rod 4 pushes powder;
it should be noted that the dimensions of the filling cannula 3 and the filling push rod 4 can be customized and assembled through limited times of tests, and powder can not be carried out along with the exhaust process when the powder is filled each time, specifically, the lengths and the inner diameters of the filling push rod 4 and the filling cannula 3 can be respectively adjusted according to the filling amount, and the lengths and the inner diameters are as follows: filling quality=cross-sectional area of the inner peripheral surface of the filling cannula 3 is determined by powder density and powder level height of the powder disc, and the filling quality can be determined by the powder level height in the powder disc, and the powder height can be determined by presetting the installation height of the material level control member.
After the powder is filled in the powder tray by the filling insertion tube 3, the filling push rod 4 properly compresses the powder in the filling insertion tube 3 to form a soft and non-compact truncated cone, and at the moment, when the filling push rod 4 fills the powder in the filling insertion tube 3 into a sterile container for injection such as a glass bottle (e.g. a penicillin bottle) to be filled, a preassembled syringe and the like, the powder can be rapidly separated from the inner wall of the filling insertion tube 3, and before the powder falls into the bottom of the sterile container for injection such as the glass bottle (e.g. the penicillin bottle) to be filled, the preassembled syringe and the like, the powder is complete in shape, so that dust can be avoided in the filling process.
Embodiment 3 referring to fig. 1 or 4 or 7, a powder filling airless dispensing method of embodiment 1 or 2, the filling tube assembly driving mechanism comprises,
the filling pipe driving mechanism drives the filling pipe 3 to move downwards so as to enable the filling pipe 3 to obtain single filling materials, and the filling pipe driving mechanism comprises a filling pipe vertical moving assembly 8 with one end being a fixed end and the other end being a movable end;
the fixed end of the filling cannula vertical movement assembly 8 can be arranged on the frame 1, the filling cannula vertical movement assembly 8 can be a power mechanism which stretches out and draws back in a certain direction, such as a servo sliding block sliding rail structure, a linear direct drive motor, an electric cylinder or an air cylinder, and the like, and the movable end of the filling cannula vertical movement assembly 8 is connected with the top end of the filling cannula 3 so as to drive the filling cannula to move vertically;
The filling push rod driving mechanism is used for driving the filling push rod 4 to move downwards so as to compress the single filling material or push the single filling material out of the filling insertion tube 3, and comprises a filling push rod vertical movement assembly 9 with one end being a fixed end and the other end being a movable end, wherein the movable end of the filling push rod vertical movement assembly 9 is connected with the top end of the filling push rod 4 so as to drive the filling push rod 4 to move vertically;
the fixed end of the filling push rod vertical movement assembly 9 can be arranged on the frame 1, and the filling push rod vertical movement assembly 9 can be a power mechanism which stretches out and draws back in a certain direction, such as a servo slide block slide rail structure or a linear direct drive motor or an electric cylinder or an air cylinder.
The displacement driving mechanism is used for driving the filling pipe assembly to move to the position of the container to be filled and comprises a rotary power mechanism with a rotary power output end in transmission connection with a fixed end of the filling pipe vertical movement assembly and a fixed end of the filling push rod vertical movement assembly or a transverse movement power mechanism 10 respectively arranged between the top end of the filling pipe 3 and the movable end of the filling pipe vertical movement assembly and between the filling push rod 4 and the movable end of the filling push rod vertical movement assembly, and the rotary power output end is fixedly connected with the fixed end of the filling pipe vertical movement assembly and the fixed end of the filling push rod vertical movement assembly through a plate-shaped structural body so as to realize transmission between the two;
In embodiment 3, it should be noted that the movement manner of the displacement driving mechanism can be divided into two types according to the movement track, one type of the displacement driving mechanism is a rotary power mechanism which moves circularly, and the other type of the displacement driving mechanism can be a power mechanism which can provide a rotary force, such as a servo motor, and the like, and the design purpose of the displacement driving mechanism is to rotate the fixed end of the filling cannula vertical movement assembly and the fixed end of the filling push rod vertical movement assembly, so that the filling cannula 3 and the filling push rod 4 are displaced from a filler above the powder disc 2 to a container above the outside of the powder disc 2; the other is a transverse moving power mechanism which can be a servo slide block slide rail structure or a linear direct drive motor or an electric cylinder or an air cylinder and the like and can provide linear movement, and the design aim is to transversely move a filling cannula vertical moving assembly and a filling push rod vertical moving assembly so that a filling cannula 3 and a filling push rod 4 are moved from a filling worker above a powder disc 2 to a container above the outside of the powder disc 2, and the filling work station is a region right above a material taking region 25;
example 4, a powder filling airless dispensing method of example 3, the filling cannula drive mechanism comprising,
an elastic element 11 which is arranged between the filling push rod 4 and the filling insertion tube 3 and has elastic potential energy acting on the filling push rod and the filling insertion tube in opposite directions, wherein the elastic element 11 can be a compression spring or a spring (pushing spring), and the contraction or extension direction of the elastic element 11 is the same as the movement direction of the filling push rod 4 and the filling insertion tube 3;
Limiting the filling insertion tube 3 in the vertical moving direction so that when the bottom end of the filling insertion tube 3 contacts with the bottom surface of the powder disc 2 or the bottom end of the filling insertion tube 3 is positioned at the container mouth, the elastic element 11 contracts and the filling push rod 4 extrudes or pushes the single filling material out of the limiting piece 12 of the filling insertion tube 3 through the elastic potential energy, and the limiting piece 12 is fixed on the frame 1;
the limiting piece 12 can be provided with a hole for the vertical displacement of the filling push rod 4 or the filling push rod 3, at the same time, the upper end or the lower end of the limiting piece 12 can be fixed on the outer peripheral surfaces of the filling push rod 3 and the filling push rod 4, the limiting piece 12 is positioned below the elastic element 11, the installation height is controlled under the condition that when the filling push rod 3 is contacted with the bottom surface of the powder tray 2, the bottom surface of the elastic element 11 is abutted against the top surface of the limiting piece 12, and at the moment, the filling push rod vertically moves the assembly to continuously drive the filling push rod to move downwards, so that the upper end of the elastic element 11 is contracted downwards due to the descending of the filling push rod 4, at the moment, the lower end of the filling push rod 4 compresses powder in the filling push rod 3, and after the vertical movement assembly of the filling push rod is reset, the elastic element 11 is reset and keeps the distance between the filling push rod 3 and the filling push rod 4 to be kept to the initial unfilled distance all the time until the next time, and the powder in the filling push rod 3 is pushed into an external container by the filling push rod 4 when the elastic element 11 is contracted next time.
The displacement driving mechanism comprises a rotary power mechanism with a rotary power output end in transmission connection with a fixed end of the filling push rod vertical movement assembly or a transverse movement power mechanism 10 arranged between the filling push rod 4 and a movable end of the filling push rod vertical movement assembly;
the moving mode of the displacement driving mechanism can be divided into two types according to the moving track, one type of the displacement driving mechanism is a rotary power mechanism which moves circularly and can be a power mechanism which can provide rotary force such as a servo motor, and the like, and the design purpose of the displacement driving mechanism is to rotate the fixed end of the filling insertion pipe vertical moving assembly, so that the filling push rod 4 and the filling insertion pipe 3 are displaced from a filler above the powder disc 2 to a container above the outside of the powder disc 2; the other is a transverse moving power mechanism which can be a servo slide block slide rail structure or a linear direct drive motor or an electric cylinder or an air cylinder and the like and can provide linear motion, and the design purpose is to transversely move the filling cannula vertical moving assembly and the filling push rod vertical moving assembly, so that the filling cannula 3 and the filling push rod 4 are moved from a filling worker above the powder disc 2 to a container above the outside of the powder disc 2, and the filling work position is a region right above a material taking region 25.
In embodiment 5, referring to fig. 2, 3, 5, 6, 8 or 9, the airless dispensing method for powder filling in embodiment 4 is characterized in that a filling cannula 14 is disposed on the filling cannula 3, a filling pushrod seat 15 is disposed on the filling pushrod 4, the filling cannula is fixed on the filling cannula seat 14, the filling pushrod 4 is fixed on the filling pushrod seat 15, the filling cannula seat 14 and the filling pushrod seat 15 are square seats fixedly connected with the outer circumferential surfaces of the filling cannula 3 and the filling pushrod 4, a plurality of vertical guide rods 16 with top ends penetrating through the filling pushrod seat 15 are fixedly mounted on the filling cannula seat 14, and the elastic elements 11 are disposed on the outer circumferential surfaces of the vertical guide rods 16 or on the outer circumferential surfaces of the filling pushrod 4 between the filling cannula seat 14 and the filling pushrod seat 15.
It should be noted that, in embodiment 6, the vertical guide rod 16 is designed to guide the movement of the filling cannula 3 or the filling push rod 4 when the elastic element 11 is contracted or extended, and the bottom surface of the filling cannula holder 14 can abut against the top surface of the limiting member 12, that is, when the filling cannula 3 contacts with the bottom surface of the powder pan 2, the filling cannula holder 14 abuts against the top surface of the limiting member 12, and when the filling push rod is driven to move downward continuously by the vertical movement assembly of the filling push rod, the elastic element 11 disposed between the filling cannula 3 holder and the filling push rod holder 15 starts to contract;
in embodiment 5, two mounting modes of the elastic member 11 are described, wherein one is concentrically arranged at the outer peripheral surface of the filling pipe 3, and the other is uniformly distributed on the outer peripheral surface of the vertical guide rod 16 around the filling pipe 3, and the mounting positions and the number of the elastic members 11 are not limited to this, nor are the cases disclosed in the drawings of the specification.
Embodiment 6, embodiment 4 of a powder filling airless dispensing method, in which a powder tray cover 19 is disposed above a powder tray 2 on a frame 1, the powder tray cover 19 is disposed above the powder tray 2 but not in contact with the powder tray 2, its shape specification can be customized according to the use requirement and is not limited to the shape specification in the drawing of the specification, on which,
The powder supply port 20 is positioned on the powder tray cover 19 above the feeding area 26, the powder supply port 20 is used for adding powder into the powder tray, and the shape and the size of the opening of the powder supply port can be selected according to the use requirement;
a level control member mounting seat 21 for controlling the height of the level control member 18, wherein the level control member mounting seat 21 is fixedly mounted on the powder tray cover 19, the shape of the level control member mounting seat can be square, the design purpose of the level control member mounting seat is to be used for bearing the level control member 18, and the level control member 18 can be fixed on the level control member mounting seat 21 through a fastener or other connecting pieces so as to adjust the working height of the level control member 18;
the bottom of the powder baffle 17 is arranged in the powder tray 2, and the top is connected with the powder tray cover 19.
In embodiment 6, specifically, the bottom surface of the middle part in the powder pan 2 may be fixedly provided with a boss 13 in the shape of a truncated cone, the space between the outer peripheral surface of the boss 13 in the shape of a truncated cone and the inner wall of the powder box 2 forms a powder accommodating space, and the powder baffle 17 and the material level control member 18 are both located between the outer peripheral surface of the boss 13 in the shape of a truncated cone and the inner wall of the powder box 2.
In embodiment 7, in the airless dispensing method for filling powder according to embodiment 6, a stirring member 22 for stirring the powder in the feeding area 26 is provided on the powder tray cover 19, and the stirring member 22 may have a rod-like structure or a plate-like structure, and the stirring member 22 may be fixed on the powder tray cover 19 to perform passive stirring on the powder driven by the powder tray when rotating or perform active stirring by a rotation power mechanism arranged on the powder tray cover 19 to perform rotation driven by the rotation power mechanism, so as to stir the powder in the powder tray;
Specifically, a through hole 24 for facilitating the stirring member 22 to extend into the powder box 2 may be formed in the powder tray cover 19 in advance.
Embodiment 8, an airless packaging method for filling powder as described in embodiment 6, wherein a level sensor 23 for detecting the level of the powder in the powder tray 2 is disposed on the powder tray cover 19, and the level sensor 23 can be used in combination with an external controller to obtain a level value, so as to facilitate selective addition of the powder into the powder tray; because the communication mode and signal transmission between the sensor and the controller are the prior art, the specific principle and method thereof will not be described herein.
The use principle of the powder filling system is as follows:
firstly, filling powder into a feeding area 26 in a powder disc, detecting the height of the material in the powder disc by a material level sensor 23 during the filling of the powder, stopping feeding after reaching the preset material height, driving a rotary power mechanism pre-installed at the bottom of the powder disc to work by an external controller, enabling the filled powder to rotate into a material taking area 25, enabling a filling cannula 3 and a filling push rod 4 of a filling tube assembly to be in a concentric state, moving the filling cannula 3 and the filling push rod 4 to the upper side of the material taking area 25 by a filling tube assembly driving mechanism, driving the filling cannula 3 to move downwards until the bottom end face of the filling cannula 3 is in contact with the powder disc 2, driving the filling push rod 4 to move downwards to a preset position, extruding the powder in the filling cannula 3, enabling the powder to be compactly reserved in a gap between the filling cannula 3 and the filling push rod 4, driving the filling assembly to move upwards and to a container mouth of an injection sterile container such as a glass bottle (e.g. a penicillin), and a pre-installed injector, and driving the push rod 4 to move downwards until the filling cannula 3 is in a repeated manner, and filling operation can be completed on the whole container by repeating the filling operation for 1;
It should be noted that the above-mentioned filling tube assembly can be designed into a plurality of groups of filling cannulas 3 and filling pushing rods 4 which are concentrically arranged to perform filling operation at the same time, and the number of the filling cannulas and the filling pushing rods can be selected according to the use requirement, so that the filling efficiency is improved;
the position of the external container (such as a penicillin bottle), the pre-assembled injector and other sterile containers for injection, namely the structure, are not drawn in the drawings of the specification of the application, and because the part of the structure does not belong to the scope of protection required by the application, the application is mainly protected by equipment which is different from products disclosed in the background art and is not provided with the gas split charging, and a worker can independently determine the specific operation strokes of the powder making disc 2, the filling tube assembly and the driving mechanism of the filling tube assembly according to different bottle supplying modes of the external container.
Claims (8)
1. A powder filling airless split charging method is characterized in that: comprises airless split charging equipment, the equipment comprises a frame, a plurality of air inlet pipes and air outlet pipes are arranged on the frame,
the powder tray is internally provided with a space for containing powder, and the motion track of the powder tray is circular motion rotating around the axis of the powder tray;
the filling pipe assembly comprises a filling insertion pipe and a filling push rod arranged in the filling insertion pipe, and a single filling material accommodating space is formed in the filling insertion pipe and in a space between the bottom of the filling insertion pipe and the bottom of the filling push rod;
The power output end of the filling tube assembly driving mechanism is in transmission connection with the filling tube assembly to drive the filling tube assembly to obtain single filling materials from the powder disc and then transfer the single filling materials into a container outside the powder disc,
the powder tray is internally provided with a powder baffle plate and a material level control member, wherein the bottom surface of the material level control member is contacted with powder when the powder tray rotates so as to control the material level, a material taking area is formed in an area enclosed between the powder baffle plate and the material level control member in the powder tray, and the other area is a material feeding area;
the method for carrying out airless split charging by the airless split charging equipment comprises the following steps:
(1) Feeding:
firstly, carrying out feeding operation, namely feeding materials into a feeding area of a powder disc through external equipment, stirring the materials while rotating the powder disc during feeding, and stopping feeding when the materials reach a detection position of a material level sensor;
(2) And (3) controlling the material level:
the height of the material level control member is adjusted to enable the distance from the bottom of the material level control member to the bottom of the powder tray to reach a preset position, and the bottom of the material level control member is continuously contacted with upper powder during the rotation of the powder tray and limits the material level;
(3) Taking and split charging of the filling pipe assembly:
(3.1) taking:
driving the powder disc to rotate at a rated angle, wherein the rotation angle of the powder disc is (120 degrees+/-10 degrees) multiplied by N, and N is an integer of 1, 2 and 3 … …; the filling pipe assembly driving mechanism drives the filling push rod and the filling insertion pipe to move to the position right above the material taking area, and then the filling pipe assembly driving mechanism drives the filling push rod and the filling insertion pipe to simultaneously descend until the bottom surface of the filling insertion pipe contacts the bottom surface of the powder tray and the filling push rod descends to a rated distance, wherein the rated distance is the descending stroke of the filling push rod when powder is filled in a single filling material accommodating space and the bottom surface of the filling push rod is abutted against the powder, and at the moment, the filling pipe assembly finishes the material taking action;
(3.2) sub-packaging:
the filling push rod and the filling insertion tube are driven to move upwards by the filling tube assembly driving mechanism and move to the opening of the sterile container for injection, and the filling push rod is driven to move downwards by the filling tube assembly driving mechanism again and push the powder in the single filling material accommodating space into the sterile container for injection, so that single sub-packaging operation is completed;
(4) Repeating the steps (3.1) - (3.2) to perform multiple filling operations.
2. A powder filling airless dispensing method as defined in claim 1, wherein: an exhaust mechanism is arranged between the filling cannula and the filling push rod, the exhaust mechanism comprises,
an inner diameter-changing expansion part formed on the inner peripheral surface of the lower part of the filling cannula, wherein the inner diameter of the inner diameter-changing expansion part gradually increases from top to bottom;
an outer diameter variable diameter shrinkage part formed on the outer peripheral surface of the middle part of the filling push rod;
the minimum inner diameter of the filling cannula at the inner diameter-variable expansion part is larger than the maximum outer diameter of the filling push rod at the outer diameter-variable contraction part, and a gap between the inner peripheral surface of the filling cannula and the outer peripheral surface of the filling push rod forms an exhaust gap for exhausting the filling tube assembly during the process of acquiring single filling materials.
3. A powder filling airless dispensing method as defined in claim 1, wherein: the driving mechanism of the filling pipe assembly comprises,
The filling pipe driving mechanism comprises a filling pipe vertical moving assembly with one end being a fixed end and the other end being a movable end, and the movable end of the filling pipe vertical moving assembly is connected with the top end of the filling pipe to drive the filling pipe to vertically move;
the filling push rod driving mechanism comprises a filling push rod vertical movement assembly with one end being a fixed end and the other end being a movable end, and the movable end of the filling push rod vertical movement assembly is connected with the top end of the filling push rod to drive the filling push rod to vertically move;
the displacement driving mechanism is used for driving the filling pipe assembly to move to the container to be filled and comprises a rotary power mechanism in transmission connection with the fixed end of the filling pipe vertical movement assembly and the fixed end of the filling push rod vertical movement assembly or a transverse movement power mechanism respectively arranged between the top end of the filling pipe and the movable end of the filling pipe vertical movement assembly and between the filling push rod and the movable end of the filling push rod vertical movement assembly.
4. A powder filling airless dispensing method as defined in claim 3, wherein: the filling cannula driving mechanism comprises a filling cannula driving mechanism body,
elastic elements which are arranged between the filling push rod and the filling insertion pipe and act on the filling push rod and the filling insertion pipe in opposite directions by elastic potential energy, wherein the contraction or extension direction of the elastic elements is the same as the movement direction of the filling push rod and the filling insertion pipe;
the filling cannula is limited in the vertical moving direction, so that when the bottom end of the filling cannula is contacted with the bottom surface of the powder disc or the bottom end of the filling cannula is positioned at the container mouth, the elastic element is contracted, and the filling push rod extrudes or pushes out the limiting piece of the filling cannula for a single filling material through the elastic potential energy, and the limiting piece is fixed on the frame.
5. The airless dispensing method of powder filling of claim 4, wherein: the filling cannula on be provided with the filling cannula seat, the filling push rod on be provided with the filling push rod seat, the filling push rod seat is located the top of filling cannula seat, the filling cannula fix on the filling cannula seat, the filling push rod fix on the filling push rod seat, fixed mounting has a plurality of top portions to run through the vertical guide arm of filling push rod seat on the filling cannula seat, elastic element arrange on the outer peripheral face of vertical guide arm or arrange in on the filling push rod outer peripheral face between filling cannula seat and the filling push rod seat.
6. The airless dispensing method of powder filling of claim 5, wherein: a powder tray cover is arranged above the powder tray on the frame and provided with,
the powder supply port is positioned right above the feeding area;
a level control member mounting seat for controlling the level control member height;
the bottom of the powder baffle is arranged in the powder tray, and the top of the powder baffle is connected with the powder tray cover.
7. The airless dispensing method of powder filling of claim 6, wherein: the powder tray cover is provided with a stirring piece for stirring powder in the feeding area.
8. The airless dispensing method of powder filling of claim 6, wherein: a material level sensor for detecting the material level in the powder tray is arranged on the powder tray cover.
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