CN115489771A - Airless subpackaging method for powder filling - Google Patents
Airless subpackaging method for powder filling Download PDFInfo
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- CN115489771A CN115489771A CN202211191992.1A CN202211191992A CN115489771A CN 115489771 A CN115489771 A CN 115489771A CN 202211191992 A CN202211191992 A CN 202211191992A CN 115489771 A CN115489771 A CN 115489771A
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- 239000000843 powder Substances 0.000 title claims abstract description 260
- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 128
- 238000003780 insertion Methods 0.000 claims abstract description 122
- 230000037431 insertion Effects 0.000 claims abstract description 122
- 230000007246 mechanism Effects 0.000 claims abstract description 103
- 238000003756 stirring Methods 0.000 claims description 25
- 230000033001 locomotion Effects 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 238000004806 packaging method and process Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 13
- 230000008602 contraction Effects 0.000 claims description 11
- 238000002627 tracheal intubation Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 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
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005429 filling process Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 description 14
- 229930182555 Penicillin Natural products 0.000 description 7
- 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 7
- 229940049954 penicillin Drugs 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000000429 assembly Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
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- 229940071643 prefilled syringe Drugs 0.000 description 1
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- 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
The invention relates to an airless subpackaging method for powder filling, which is characterized in that a powder disc is arranged on a rack; the filling tube assembly comprises a filling insertion tube and a filling push rod arranged in the filling insertion tube, and a single filling material accommodating space is formed in a space between the bottom of the filling insertion tube and the bottom of the filling push rod in the filling insertion tube; a filling tube assembly drive mechanism; compared with the existing airless split charging equipment in the background technology, the application omits the pre-filling process, so that the structure is simpler, the reliability is strong, in addition, the whole working process does not need vacuum or compressed gas, or a filter element or a filter is not needed to be installed, the defects in screw rod or airflow filling are avoided, the loading capacity in the whole working process is controllable, the precision is high, the energy is saved, the environment is protected, and the economic and social benefits are larger; because the equipment of this application only needs once to fill, this influences littlely to the powder, and the more little material of economizing that the powder dish volume can be done, filling subassembly simple structure easily realizes convenient popularization and application.
Description
Technical Field
The invention relates to the technical field of material subpackage, in particular to an airless subpackage method for powder filling.
Background
The conventional aseptic powder filling (packaging) is known to use a screw filling technique or an air flow filling technique, in which the air flow filling is divided into a rotary drum (wheel) and a metering tube. The screw filling can realize dust-free filling, but different powders have different flowability, the filling quantity stability in the screw filling process is not good and has large difference, the powder with excellent flowability has the problem of uncontrolled powder leakage, and the powder with poor flowability is easy to adhere and block, so the screw filling machine is greatly limited in use and has small application range. The conventional airflow filling of a rotary drum (wheel) and a metering pipe both needs to be carried out by using a vacuum filling compressed gas blowing filling mode, in the filling process, the air blowing generates large dust, although a dust removal device is arranged, the environment is inevitably polluted, meanwhile, a filter element or a filter in a pipeline, which is in contact with powder, is limited by the aperture, powder with very small particle size easily penetrates through 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 in long operation time and needs to be frequently replaced, so that the problem of small application range also exists, and the energy consumption is large due to the fact that the vacuum and the compressed gas are suitable in the working process;
secondly, the method comprises the following steps:
for example, the national patent publication No. CN216035224U discloses an airless powder split charging device, which comprises a device body, a charging tray driving mechanism, a gas-liquid separator and a gas-liquid separator, wherein the charging tray is arranged on the device body; the inlet ends of the metering pipes are communicated with the inner wall of the bottom surface of the charging tray, and the outlet ends of the metering pipes are provided with a discharge control mechanism for controlling the discharge of materials; sequentially forming a preassembly station and a sub-packaging station above the material disc according to the rotation direction of the material disc, wherein a preassembly area is correspondingly formed in the material disc below the preassembly station, and a sub-packaging area is correspondingly formed in the material disc below the sub-packaging station; the device comprises a preassembly rod group arranged in a preassembly station and a subpackaging rod group arranged in a subpackaging station, wherein a preassembly lifting mechanism for lifting the preassembly rod group and a subpackaging lifting mechanism for lifting the subpackaging rod group are arranged on a device body; the scraping plate driving mechanism is arranged on the scraping plate and drives the scraping plate to do reciprocating motion in the material tray according to an arc-shaped track so as to push redundant materials above the inlet end of the metering pipe in the subpackaging area to the preassembling area below the feeding pipe; and a material metering unit for detecting the blanking amount 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 material tray driving shaft penetrates through and rotates the material tray driving shaft arranged on the equipment body, the upper end of the material tray driving shaft is provided with a fixed end fixedly connected with the material tray, and the lower end of the material tray driving shaft is provided with a power input end of the material tray driving shaft; the material tray rotation driving mechanism is in transmission connection with the power output end and the power input end of the material tray driving shaft, and provides rotating force for the material tray. The feeding pipe comprises; the lower end of the hopper is arranged in the preassembly 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 port 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 rotating force for the stirring shaft, and stirring spiral blades are fixedly arranged on the outer 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 pipe and 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 pipe is positioned between the two pairs of vertical plates, the inner walls of one pair of vertical plates are in sliding fit connection with the outer peripheral surface of the lower end of the metering pipe, the inner wall of one vertical plate in the other pair of vertical plates is abutted against the outer peripheral surface of the lower end of the metering pipe, a pressure spring installation gap is reserved between the other vertical plate and the outer peripheral surface of the lower end of the metering pipe, a pressure spring is installed in the pressure spring installation gap, and a discharging hole matched with the metering pipe for use is formed in the transverse plate in the pressure spring installation gap; u-shaped gate pushing mechanism, U-shaped gate pushing mechanism set up on the equipment body of partial shipment station below, U-shaped gate pushing mechanism includes lifting screw, is equipped with the elevator on the lifting screw, is equipped with the lift guide arm on the elevator, the top of lift guide arm forms to promote the arcwall face with this compression pressure spring to the U-shaped gate. The pre-assembling rod group comprises; the upper preassembly rod is parallel to the metering tube below the upper preassembly rod, and the lower end of the upper preassembly rod is over against the upper end of the metering tube below the upper preassembly rod; the lower pre-assembling rod is detachably connected with the lower end of the upper pre-assembling rod, the lower pre-assembling rod is parallel to the metering tube below the lower pre-assembling rod, and the lower end of the lower pre-assembling rod is over against the upper end of the metering tube below the lower pre-assembling rod; the upper end of the spring abuts against the lower edge of the pre-installed driving rod and abuts against the lower edge of the pre-installed driving rod adjusting nut, and the lower end of the spring abuts against the upper end edge of the lower pre-installed rod; a dirt receiving groove sleeved on the outer peripheral surface of the upper pre-mounting rod is arranged between the lower end of the spring and the upper end of the lower pre-mounting rod, and a notch of the dirt receiving groove is vertically arranged upwards; one end of the pre-installed driving rod is connected with the upper pre-installed rod, and the other end of the pre-installed driving rod is in transmission connection with the lifting end of the pre-installed lifting mechanism; the top surface of the device body is fixedly provided with a preassembly guide rod, and the preassembly guide rod penetrates through the preassembly driving rod 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 over against the upper end of the metering tube below the upper split charging rod; the lower sub-packaging rod is detachably connected with the lower end of the upper sub-packaging rod, the lower sub-packaging rod is parallel to the metering tube below the lower sub-packaging rod, and the lower end of the lower sub-packaging rod is over against the upper end of the metering tube below the lower sub-packaging rod; the subpackaging driving rod is used for driving the upper subpackaging rod and the lower subpackaging rod to move along the vertical direction, the subpackaging driving rod is sleeved on the peripheral surface of the upper subpackaging rod, and a subpackaging driving rod adjusting nut used for limiting the subpackaging driving rod between the upper subpackaging rod and the lower subpackaging rod is arranged at the upper end of the upper subpackaging rod; one end of the subpackage driving rod is connected with the upper subpackage rod, and the other end of the subpackage driving rod is in transmission connection with the lifting end of the subpackage lifting mechanism; the top surface fixed mounting at the equipment body has the partial shipment guide bar, and the partial shipment guide bar runs through the lift of partial shipment actuating lever with this to the partial shipment actuating lever leads. The lower end of the scraping plate, the bottom surface and the inner side surface of the material tray are reserved with moving gaps for the scraping plate to move during scraping. The device body is provided with a smoothing mechanism for controlling the height of the material in the material tray, and the smoothing mechanism comprises a smoothing plate which is arranged in a preassembling area below the hopper. The scraping plate driving mechanism comprises a scraping plate driving shaft, the scraping plate driving shaft penetrates through the charging tray driving shaft and is concentrically arranged with the charging tray driving shaft, the scraping plate driving shaft is rotatably connected with the charging tray driving shaft, the top end of the scraping plate driving shaft extends out of the charging tray driving shaft, and the peripheral surface of the scraping plate driving shaft is fixedly connected with the side surface of the scraping plate;
the product belongs to a bottom filling mode, and multiple times of preassembly are needed in a complete filling process when the product is used;
the application provides an under-filling type filling mode is not adopted any more, and a complete filling process only needs one-time preassembly, so that the influence on powder is small, and the volume of a powder tray can be greatly reduced.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides an airless powder split charging method for powder filling, which does not adopt a down-set filling mode any more, only needs one-time pre-charging 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, the airless subpackaging method for powder filling comprises airless subpackaging equipment, the equipment comprises a stand, the stand is provided with a plurality of groups of powder containers,
the powder disc is internally provided with a space for containing powder, and the motion trail of the powder disc is circular motion rotating around the axis of the powder disc;
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 space between the bottom of the filling insertion pipe and the bottom of the filling push rod in the filling insertion pipe;
the power output end of the filling tube assembly driving mechanism is in transmission connection with the filling tube assembly so as to drive the filling tube assembly to obtain single filling materials from the powder tray and then transfer the single filling materials to a container outside the powder tray,
a powder baffle plate and a material level control part are arranged in the powder tray, the bottom surface of the powder tray is in contact with powder when the powder tray rotates so as to control the material level height, a material taking area is formed in an area enclosed by the powder baffle plate and the material level control part in the powder tray, and the other area is a material feeding area;
the method for carrying out airless subpackage by the airless subpackage equipment comprises the following steps:
(1) Feeding:
firstly, feeding operation is carried out, feeding is carried out in a feeding area of a powder disc through external equipment, the powder disc rotates and simultaneously stirs materials during feeding, and feeding is stopped when the detection position of a material level sensor is reached;
(2) Controlling the material level:
adjusting the height of the material level control piece to ensure that the distance from the bottom of the material level control piece to the bottom of the powder tray reaches a preset position, and continuously contacting the bottom of the material level control piece with the upper layer of powder and limiting the material level during the rotation of the powder tray;
(3) Taking and subpackaging the filling tube assembly:
(3.1) taking: the powder disc is driven to rotate according to a rated angle: the rotation angle of the powder tray is (120 +/-10) multiplied by N, wherein N is 1, 2, 3 \8230, integer is used for driving the filling push rod and the filling insertion tube to move right above the material taking area through the filling tube assembly driving mechanism, then the filling push rod and the filling insertion tube are driven to simultaneously descend through the filling tube assembly driving mechanism until the bottom surface of the filling insertion tube is contacted with the bottom surface of the powder tray and the filling push rod descends to a rated distance, the rated distance is the descending stroke of the filling push rod when powder is filled in the filling material containing space for one time and the bottom surface of the filling push rod is abutted against the part of the powder, and at the moment, the filling tube assembly finishes the material taking action;
(3.2) subpackaging:
the filling pipe assembly driving mechanism drives the filling push rod and the filling insertion pipe to move upwards and move to the bottleneck of an injection sterile container such as a glass bottle, a vial, a pre-installed injector and the like, the filling pipe assembly driving mechanism drives the filling push rod to move downwards again, powder in the single filling material containing space is pushed into the injection sterile container such as the glass bottle, the vial, the pre-installed injector and the like, and then single subpackaging operation is completed;
(4) Repeating the steps (3.1) - (3.2) to carry out multiple filling operations.
The technical problem to be solved by the present invention can also be achieved by the following technical solution, in the above-mentioned airless dispensing method for powder filling, an exhaust mechanism is provided between the filling insertion tube and the filling push rod, the exhaust mechanism comprises,
an inner diameter reducing and expanding part which is formed on the inner circumferential surface of the lower part of the filling insertion pipe and has an inner diameter gradually enlarged from top to bottom;
the outer diameter reducing contraction part is formed on the outer peripheral surface of the middle part of the filling push rod;
the minimum inner diameter of the filling insertion pipe at the inner diameter reducing expansion part is larger than the maximum outer diameter of the filling push rod at the outer diameter reducing contraction part, and a gap between the inner circumferential surface of the filling insertion pipe and the outer circumferential surface of the filling push rod forms an exhaust gap for exhausting the filling pipe assembly during obtaining single filling.
The technical problem to be solved by the present invention can also be solved by the following technical solutions, wherein the above-mentioned airless dispensing method for powder filling includes that the filling tube assembly driving mechanism includes,
the filling insertion pipe driving mechanism drives the filling insertion pipe to move downwards so that the filling insertion pipe can obtain single filling materials, the filling insertion pipe driving mechanism comprises a filling insertion pipe vertical moving assembly, one end of the filling insertion pipe vertical moving assembly is a fixed end, the other end of the filling insertion pipe vertical moving assembly is a movable end, and the movable end of the filling insertion pipe vertical moving assembly is connected with the top end of the filling insertion pipe so as to drive the filling insertion pipe to move vertically;
the filling push rod driving mechanism drives the filling push rod to move downwards so as to properly compress the single filling material or push the single filling material out of the filling insertion tube, the filling push rod driving mechanism comprises a filling push rod 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 push rod vertical moving assembly is connected with the top end of the filling push rod so as to drive the filling push rod to vertically move;
the displacement driving mechanism for driving the filling pipe assembly to move to the container to be filled comprises a rotary power mechanism of which a rotary power output end is in transmission connection with a fixed end of the filling intubation vertical moving assembly and a fixed end of the filling push rod vertical moving assembly or a transverse moving power mechanism which is respectively arranged between the top end of the filling intubation and the movable end of the filling intubation vertical moving assembly and between the filling push rod and the movable end of the filling push rod vertical moving assembly.
The technical problem to be solved by the present invention can also be achieved by the following technical solution, in which the above-mentioned airless dispensing method for powder filling, the filling cannula driving mechanism includes,
the elastic element is arranged between the filling push rod and the filling insertion tube, and the elastic potential energy acts on the filling push rod and the filling insertion tube in opposite directions, and the contraction/extension direction of the elastic element is the same as the moving direction of the filling push rod and the filling insertion tube;
the filling insertion pipe is limited in the vertical moving direction, so that when the bottom end of the filling insertion pipe is in contact with the bottom surface of the powder tray or the bottom end of the filling insertion pipe is positioned at the opening of the container, the elastic element is contracted, the filling push rod is enabled to extrude or push out the limiting part of the filling insertion pipe for single filling through the elastic potential energy, and the limiting part is fixed on the rack;
the displacement driving mechanism comprises a rotary power mechanism of which the rotary power output end is in transmission connection with the fixed end of the filling push rod vertical moving assembly or a transverse moving power mechanism arranged between the filling push rod and the movable end of the filling push rod vertical moving assembly.
The technical problem to be solved by the present invention can also be solved by the following technical solution, in the above-mentioned airless powder filling method, a filling cannula seat is arranged on the filling cannula, a filling push rod seat is arranged on the filling push rod, the filling push rod seat is located above the filling cannula seat, the filling cannula is fixed on the filling cannula seat, the filling push rod is fixed on the filling push rod seat, a plurality of vertical guide rods with top end portions penetrating through the filling push rod seat are fixedly installed on the filling cannula seat, and the elastic element is placed on the outer peripheral surface of the vertical guide rod or on the outer peripheral surface of the filling push rod between the filling cannula seat and the filling push rod seat.
The technical problem to be solved by the invention can also be achieved by the following technical scheme that the above-mentioned airless powder filling method is characterized in that a powder tray cover is arranged on the machine frame above the powder tray and is provided with a powder tray cover,
the powder supply port is positioned right above the charging area;
a material level control member mounting seat for controlling the height of the material level control member;
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 that the powder filling airless split charging method is characterized in that a stirring piece for stirring powder in a charging area is arranged on a powder tray cover.
The technical problem to be solved by the invention can also be solved by adopting the following technical scheme that the powder filling airless split charging method 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 technology, the air-free split charging equipment omits the pre-filling process, has simpler structure and strong reliability, does not need vacuum and compressed gas in the whole working process, does not need to install a filter element or a filter, does not have the defects in screw or airflow filling, has controllable loading capacity in the whole working process, high precision, energy conservation and environmental protection, and has larger economic and social benefits; because the equipment of the application only needs to be filled once, the influence on the powder is less, the volume of the powder tray can be made into smaller materials, the filling assembly has a simple structure, is easy to realize and is convenient to popularize and apply, and due to the structural design characteristics, the system is particularly suitable for aseptic powder filling of aseptic containers for injection such as glass bottles (such as penicillin bottles), pre-installed injectors and the like, and is also suitable for filling production equipment with transmission modes such as spur racks or turntables and the like;
(2) The filling insertion tube inner diameter reducing expansion part of the filling system can form a soft and non-compact round platform column in the filling insertion tube when the filling insertion tube contacts and compresses powder, when the filling push rod fills powder in the filling insertion tube into glass bottles (such as penicillin bottles), pre-installed injectors and other aseptic containers for injection to be filled, the powder can be quickly separated from the inner wall of the filling insertion tube and fall into the bottom of the glass bottles (such as penicillin bottles), pre-installed injectors and other aseptic containers for injection to be filled, the powder is complete in shape, and dust is prevented from being generated in the filling process;
(3) Because the bottom of the filling insertion pipe is in a shape of reducing and expanding the inner diameter, namely the inner diameter is gradually expanded, the pipe wall at the bottom of the filling insertion pipe is thinner, and the contact surface of the bottommost end of the filling insertion pipe and the bottom surface of the powder tray is enabled to be the smallest as possible, on one hand, powder contacting with the pipe orifice of the filling insertion pipe can be prevented from being compressed at the bottom of the powder tray groove to affect the next filling, on the other hand, the pipe orifice can be reduced to stick powder, so that equipment is polluted or the filling amount is affected;
(4) The arrangement of the material level control part can ensure that the bottom of the powder tray is continuously contacted with the powder when the powder tray rotates, so that the material level in the powder tray is always at the same height, and the filling of the powder is ensured to be the same every time.
Drawings
FIG. 1 is a partial schematic front view of the present invention;
FIG. 2 is a schematic view of a filling tube assembly having a resilient member;
FIG. 3 is a schematic view of another mounting position of the elastic member shown in FIG. 2;
FIG. 4 is a schematic view of the fill tube assembly of FIG. 1 with the indexing drive mechanism following a rotational motion profile;
FIG. 5 is a schematic diagram of the fill tube assembly of FIG. 2 with the indexing drive mechanism following a rotational motion profile;
FIG. 6 is a schematic diagram of the fill tube assembly of FIG. 3 with the indexing drive mechanism following a rotational motion profile;
FIG. 7 is a schematic view of the arrangement of FIG. 1 employing two sets of filling tube assemblies;
FIG. 8 is a schematic view of the arrangement of FIG. 2 employing two sets of filling tube assemblies;
FIG. 9 is a schematic view of the arrangement of FIG. 3 employing two sets of filling tube assemblies;
FIG. 10 is a schematic view of the filling ram;
FIG. 11 is a schematic view of the filling cannula;
FIG. 12 is a schematic view of the assembled filling push rod and filling cannula;
fig. 13 is a schematic top view of the powder pan cover, the powder baffle, the level control member and the level control member mounting seat.
In the figure, 1, a frame; 2. a powder tray; 3. filling and inserting a pipe; 4. filling the push rod; 5. a single-time packing accommodating space; 6. an inner diameter reducing expansion part; 7. an outer diameter reducing contraction part; 8. filling the insertion pipe vertical moving assembly; 9. filling a push rod vertical moving assembly; 10. a transverse moving power mechanism; 11. an elastic element; 12. a limiting member; 13. a protrusion; 14. filling a cannula seat; 15. filling the push rod seat; 16. a vertical guide rod; 17. a powder baffle plate; 18. a level control; 19. covering the powder tray; 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 feeding area.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings so as to facilitate the further understanding of the present invention by those skilled in the art, and do not limit the right thereto.
Example 1, referring to fig. 1, an airless dispensing method for powder filling includes a frame 1, on which the frame 1 is provided,
the powder disc 2 is internally provided with a space for containing powder, the motion track of the powder disc 2 is circular motion rotating around the axis of the powder disc 2, the rotation direction of the powder disc can be selected according to the use requirement, and the motion speed of the powder disc 2 in circular motion can be selected according to the use requirement;
as disclosed in the figure, the top of one of the powder discs 2, i.e. the powder disc 2 with a ring-shaped cross section, is arranged in an open hollow structure, and the bottom surface of the middle part of the powder disc 2 can be driven to rotate to make a circular motion by an external rotation power mechanism, such as a servo motor;
the filling pipe assembly comprises a filling insertion pipe 3 and a filling push rod 4 arranged in the filling insertion pipe 3, and a single filling material containing space 5 is formed in the space between the bottom of the filling insertion pipe 3 and the bottom of the filling push rod 4 in the filling insertion pipe 3;
the power output end of the filling tube assembly driving mechanism is in transmission connection with the filling tube assembly so as to drive the filling tube assembly to obtain single filling materials from the powder disc 2 and then transfer the single filling materials to a container outside the rack 1, wherein the container can be a glass bottle (such as a penicillin bottle), a prefilled syringe and other aseptic containers for injection;
the powder tray 2 is internally provided with a powder baffle 17 and a material level control part 18, wherein the bottom surface of the powder baffle 17 is in contact with powder when the powder tray 2 rotates so as to control the height of the material level, the material level control part 18 is actually of a plate-shaped structure, the bottom surface of the powder baffle can be arranged in an arc shape, the purpose is that when the powder tray 2 rotates, the bottom surface of the material level control part 18 can generate scraping or smoothing action with the powder, so that the height of the material level in the powder tray 2 can be almost consistent after intermittent material supplement, the powder baffle 17 can also be designed into a plate-shaped structure body, the design aim is that when material is added, 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 powder tray 2 is ensured not to be changed during the material taking period of the filling tube assembly, the material taking area 25 is formed by the area enclosed between the powder baffle 17 and the material level control part 18 in the powder tray 2, and the other area is a material taking area 26.
The method for carrying out airless subpackage by the airless subpackage equipment comprises the following steps:
(1) Feeding:
firstly, feeding operation is carried out, feeding is carried out in a feeding area of the powder tray 2 through external equipment, the powder tray is rotated while the material is stirred during feeding, and feeding is stopped when the detection position of the material level sensor is reached;
(2) Controlling the material level:
adjusting the height of the material level control part 18 to ensure that the distance from the bottom of the material level control part to the bottom of the powder tray reaches a preset position, and continuously contacting the bottom of the material level control part 18 with the upper layer powder and limiting the material level during the rotation of the powder tray 2;
(3) Taking and subpackaging the filling tube assembly:
(3.1) taking:
the powder disc 2 is driven to rotate at a rated angle: the rotation angle of the powder tray 2 is (120 +/-10) multiplied by N, wherein N is 1, 2, 3 \8230, integer is used, the filling tube assembly driving mechanism drives the filling push rod 4 and the filling insertion tube 3 to move right above the material taking area 25, the filling tube assembly driving mechanism drives the filling push rod 4 and the filling insertion tube 3 to simultaneously descend until the bottom surface of the filling insertion tube 3 is contacted with the bottom surface of the powder tray 2 and the filling push rod 4 descends to a rated distance, the rated distance is the descending stroke of the filling push rod 4 when the powder is filled in the single filling material containing space 5 and the bottom surface of the filling push rod 4 is abutted against the part of the powder, and the filling tube assembly finishes the material taking action;
(3.2) subpackaging:
the filling tube assembly driving mechanism drives the filling push rod 4 and the filling insertion tube 3 to move upwards and move to the bottleneck of an injection sterile container such as a glass bottle, a vial, a pre-installed syringe and the like, the filling tube assembly driving mechanism drives the filling push rod 4 to move downwards again, powder in the single filling material containing space 5 is pushed into the injection sterile container such as the glass bottle, the vial, the pre-installed syringe and the like, and then single subpackaging operation is completed;
(4) Repeating the steps (3.1) - (3.2) to carry out multiple filling operations.
an inner diameter reducing expansion part 6 which is formed on the inner circumferential surface of the lower part of the filling insertion pipe 3 and has gradually enlarged inner diameter from top to bottom;
the inner diameter reducing and expanding part 6 is a round table column (bell mouth) with the inner diameter gradually increased from top to bottom and enables powder formed in the inner diameter reducing and expanding part to form a gentle slope, and is characterized in that the filling insertion pipe 3 at the part is in a state that the pipe wall is thinner from top to bottom, namely the pipe wall at the bottom end of the filling insertion pipe 3 is the thinnest, the contact surface between the bottom end of the filling insertion pipe 3 and the bottom surface of the powder tray 2 is the smallest as possible, the thickness of the contact surface is close to the blade of a knife, the pipe orifice can be called as a knife-edge-shaped pipe orifice, on one hand, powder contacting the pipe orifice of the filling insertion pipe 3 can be prevented from being compacted at the bottom of the powder tray groove to influence the next filling, on the other hand, the pipe orifice can be reduced from being stuck with powder, so as to pollute equipment or influence the filling quantity, and the specific inner diameter value can be selected according to the use requirements;
an outer diameter reducing contraction part 7 formed on the outer peripheral surface of the middle part of the filling push rod 4;
the outer diameter reducing contraction part 7 is reduced in outer diameter or inner diameter at the same time, namely a certain gap is reserved between the outer peripheral surface of the filling push rod 4 and the filling insertion pipe 3, and the gap size can customize the outer diameter reducing contraction part 7 according to the use requirement;
the minimum inner diameter of the filling insertion pipe 3 at the inner diameter reducing and expanding part 6 is larger than the maximum outer diameter of the filling push rod 4 at the outer diameter reducing and contracting part 7, a gap between the inner circumferential surface of the filling insertion pipe 3 and the outer circumferential surface of the filling push rod 4 forms an exhaust gap for exhausting the filling pipe assembly during obtaining single filling, namely a certain gap is always reserved between the outer circumferential surface of the filling push rod 4 and the filling insertion pipe 3, and the exhaust gap formed by the gap can ensure that gas in the filling insertion pipe 3 can be naturally exhausted from the exhaust gap during being compressed when the powder is pushed by the filling push rod 4 each time;
it should be noted that the size of filling intubate 3 and filling push rod 4 is carried out the customization assembly in the experiment of accessible limited number of times to make and not have the powder to be taken out along with the exhaust process when filling the powder at every turn, it is specific, the length and the internal diameter of filling push rod 4 and filling intubate 3 can be adjusted respectively according to the volume of filling size, its length and internal diameter foundation: the filling quality = the cross-sectional area of the inner circumferential surface of the filling cannula 3 and the powder level height of the powder tray and the powder density, and the filling quality can be determined by the powder level height in the powder tray, and the powder height can be determined by presetting the installation height of the material level control element.
After the filling insertion tube 3 is filled with powder in the powder tray, the filling push rod 4 descends to properly compress the powder in the filling insertion tube 3 to form a soft and non-compact round table column, at the moment, when the filling push rod 4 fills the powder in the filling insertion tube 3 into the glass bottle (such as a penicillin bottle) to be filled, a pre-installed injector and other aseptic containers for injection, the powder can be quickly separated from the inner wall of the filling insertion tube 3, and before the powder falls into the bottom of the glass bottle (such as a penicillin bottle) to be filled, the pre-installed injector and other aseptic containers for injection, the powder is complete in shape, and dust can be prevented from being generated in the filling process.
the filling cannula driving mechanism drives the filling cannula 3 to move downwards so that the filling cannula 3 obtains single filling materials, and comprises a filling cannula vertical moving assembly 8 with one end serving as a fixed end and the other end serving as a movable end;
the fixed end of the filling cannula vertical moving assembly 8 can be arranged on the frame 1, the filling cannula vertical moving assembly 8 can be a power mechanism which can stretch out and draw back according to a certain direction, such as a servo slide block slide rail structure/a linear direct drive motor/an electric cylinder/an air cylinder, and the like, and the movable end of the filling cannula vertical moving assembly 8 is connected with the top end of the filling cannula 3 so as to drive the filling cannula to vertically move;
the filling push rod driving mechanism drives 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 pipe 3, the filling push rod driving mechanism comprises a filling push rod vertical moving assembly 9 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 moving 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 moving assembly 9 can be installed on the frame 1, and the filling push rod vertical moving assembly 9 can be a power mechanism which can stretch out and draw back according to a certain direction, such as a servo slide block slide rail structure/a linear direct drive motor/an electric cylinder/an air cylinder and the like.
The displacement driving mechanism drives the filling tube assembly to move to a container to be filled and comprises a rotary power mechanism or a transverse moving power mechanism 10, wherein the rotary power mechanism is in transmission connection with a fixed end of a filling intubation vertical moving assembly and a fixed end of a filling push rod vertical moving assembly at a rotary power output end, or the transverse moving power mechanism is respectively arranged between the top end of a filling intubation 3 and the movable end of the filling intubation vertical moving assembly and between a filling push rod 4 and the movable end of the filling push rod vertical moving assembly, and the rotary power output end is fixedly connected with the fixed end of the filling intubation vertical moving assembly and the fixed end of the filling push rod vertical moving assembly through a plate-shaped structural body so as to realize transmission between the rotary power output end and the fixed end of the filling intubation vertical moving assembly and the fixed end of the filling push rod vertical moving assembly;
in embodiment 3, it should be noted that the moving manner of the displacement driving mechanism can be divided into two manners according to the moving track, one of which is a circular motion power mechanism, and the other of which is a power mechanism that can provide a rotating force, such as a servo motor, and the other of which is designed to rotate the fixed end of the filling cannula vertical moving assembly and the fixed end of the filling push rod vertical moving assembly, so that the filling cannula 3 and the filling push rod 4 are moved from the filling station above the powder tray 2 to the container outside the powder tray 2; the other is a transverse moving power mechanism which can be a servo slide block slide rail structure/a linear direct drive motor/an electric cylinder/an air cylinder and other power mechanisms capable of providing linear motion, and the design aim is to transversely move a filling insertion pipe vertical moving assembly and a filling push rod vertical moving assembly so that a filling insertion pipe 3 and a filling push rod 4 are moved to the upper part of a container outside a powder tray 2 from a filling station above the powder tray 2, wherein the filling station is an area right above a material taking area 25;
an elastic element 11 which is arranged between the filling push rod 4 and the filling insertion tube 3 and the elastic potential energy acts on the filling push rod and the filling insertion tube in opposite directions, the elastic element 11 can be a pressure spring or a spring (push spring), and the contraction/extension direction of the elastic element 11 is the same as the moving direction of the filling push rod 4 and the filling insertion tube 3;
the filling insertion tube 3 is limited in the vertical moving direction, so that when the bottom end of the filling insertion tube 3 is contacted with the bottom surface of the powder tray 2 or the bottom end of the filling insertion tube 3 is positioned at a container opening, the elastic element 11 is contracted, the filling push rod 4 extrudes or pushes out the limiting piece 12 of the filling insertion tube 3 for filling once through the elastic potential energy, and the limiting piece 12 is fixed on the rack 1;
the limiting member 12 may be provided with a hole for the filling push rod 4 or the filling insertion tube 3 to move in the vertical direction, meanwhile, the upper end or the lower end of the limiting member 12 may be fixed on the outer circumferential surfaces of the filling insertion tube 3 and the filling push rod 4, the limiting member 12 is located below the elastic element 11, and the installation height thereof is controlled such that when the filling insertion tube 3 contacts the bottom surface of the powder tray 2, the bottom surface of the elastic element 11 abuts against the top surface of the limiting member 12, and at this time, the filling push rod vertically moves the assembly to continue to drive the filling push rod to move downward, so that the upper end of the elastic element 11 shrinks downward due to the downward movement of the filling push rod 4, at this time, the lower end of the filling push rod 4 compresses the powder in the filling insertion tube 3, after the filling push rod vertically moves the assembly to reset, the elastic element 11 also resets and keeps the distance between the filling insertion tube 3 and the filling push rod 4 always to the initial unfilled distance until the elastic element 11 shrinks next time, the powder in the filling insertion tube 3 is pushed to the external container by the filling push rod 4.
The displacement driving mechanism comprises a rotary power mechanism with a rotary power output end in transmission connection with the 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 the movable end of the filling push rod vertical movement assembly;
the moving mode of the displacement driving mechanism can be divided into two modes according to the moving track, wherein one mode is a rotary power mechanism with circular motion, the rotary power mechanism can be a power mechanism which can provide rotary force such as a servo motor, and the like, and the design purpose is to rotate the fixed end of the filling cannula vertical moving assembly, so that the filling push rod 4 and the filling cannula 3 are moved to the position above a container outside the powder tray 2 from a filling station above the powder tray 2; the other is a transverse moving power mechanism which can be a servo slide block slide rail structure, a linear direct drive motor, an electric cylinder, an air cylinder and other power mechanisms capable of providing linear motion, and the design aim is to transversely move a filling insertion pipe vertical moving assembly and a filling push rod vertical moving assembly so that the filling insertion pipe 3 and the filling push rod 4 are moved from a filling station above the powder tray 2 to a position above a container outside the powder tray 2, wherein the filling station is an area right above a material taking area 25.
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 contracts or expands, and the bottom surface of the filling cannula seat 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 seat 14 abuts against the top surface of the limiting member 12, and when the filling push rod is driven to move downwards by the vertical movement assembly of the filling push rod, the elastic element 11 located between the filling cannula seat 3 and the filling push rod seat 15 starts to contract;
in embodiment 5, two mounting manners of the elastic element 11 are described, one is concentrically arranged at the outer peripheral surface of the filling cannula 3, the other is uniformly distributed on the outer peripheral surface of the vertical guide rod 16 around the filling cannula 3, and the mounting positions and the number of the elastic elements 11 are not limited to the above, and are not limited to the cases disclosed in the drawings of the specification.
the powder supply port 20 is positioned on the powder tray cover 19 above the charging area 26, the powder supply port 20 is used for adding powder into the powder tray, and the shape and the size of an opening of the powder supply port can be selected according to the use requirement;
the material level control piece mounting seat 21 is used for controlling the height of the material level control piece 18, the material level control piece mounting seat 21 is fixedly mounted on the powder tray cover 19, the material level control piece mounting seat 21 can be of a square structure, the material level control piece mounting seat is designed to be used for bearing the material level control piece 18, the material level control piece 18 can be fixed on the material level control piece mounting seat 21 through a fastening piece or other connecting pieces, and the working height of the material level control piece 18 can be adjusted;
the bottom of the powder baffle 17 is arranged in the powder tray 2, and the top of the powder baffle is connected with the powder tray cover 19.
In embodiment 6, specifically, a circular truncated cone-shaped protrusion 13 may be fixedly disposed on a bottom surface of a middle portion of the powder tray 2, a powder containing space is formed between an outer circumferential surface of the circular truncated cone-shaped protrusion 13 and an inner wall of the powder container 2, and the powder blocking plate 17 and the material level control member 18 are both located between the outer circumferential surface of the circular truncated cone-shaped protrusion 13 and the inner wall of the powder container 2.
specifically, a through hole 24 for allowing the stirring member 22 to extend into the compact 2 may be formed in the compact cover 19 in advance.
The use principle of the powder filling system is as follows:
filling powder into a feeding area 26 in a powder tray, detecting the material height in the powder tray by a material level sensor 23 during powder filling, stopping feeding after the preset material height is reached, driving a rotary power mechanism pre-installed at the bottom of the powder tray to work by an external controller at the moment, enabling the filled powder to rotate into a material taking area 25, enabling a filling insertion pipe 3 and a filling push rod 4 of a filling pipe assembly to be in a concentric state, moving the filling insertion pipe 3 and the filling push rod 4 to be above the material taking area 25 through a filling pipe assembly driving mechanism, driving the filling insertion pipe 3 to descend through the filling pipe assembly driving mechanism until the bottom end face of the filling insertion pipe 3 is in contact with a powder tray 2, driving the filling push rod 4 to descend to a preset position, extruding the powder in the filling insertion pipe 3, enabling the powder to be closely remained in a gap between the filling insertion pipe 3 and the filling push rod 4, driving the filling pipe assembly driving mechanism to drive the filling pipe assembly to ascend and move to container openings of sterile containers for injection such as glass bottles to be filled, pre-installed injectors and completing the whole filling operation in a repeated manner;
it should be noted that the filling tube assembly can be designed to simultaneously perform filling operations on a plurality of groups of concentrically arranged filling insertion tubes 3 and filling push rods 4, and the number of the filling insertion tubes can be selected according to the use requirements, so that the filling efficiency is improved;
the position, namely the structure, of an external container (such as a penicillin bottle), a pre-installed syringe and other aseptic containers for injection is not drawn in the drawings of the specification of the application, and because the partial structure does not belong to the range to be protected in the application, the application aims to protect equipment for non-underneath type airless split charging, which is different from the product disclosed in the background technology, and a worker can independently customize the specific operation strokes of the powder disc 2, the filling tube assembly and the filling tube assembly driving mechanism according to different bottle supply modes of the external container.
Claims (8)
1. An airless subpackaging method for powder filling is characterized in that: comprises an airless split charging device, which comprises a frame, wherein the frame is provided with an air inlet,
the powder disc is internally provided with a space for containing powder, and the motion trail of the powder disc is circular motion rotating around the axis of the powder disc;
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 space between the bottom of the filling insertion pipe and the bottom of the filling push rod in the filling insertion pipe;
the power output end of the filling tube assembly driving mechanism is in transmission connection with the filling tube assembly so as to drive the filling tube assembly to obtain single filling materials from the powder tray and then transfer the single filling materials to a container outside the powder tray,
a powder baffle plate and a material level control part are arranged in the powder tray, the bottom surface of the powder tray is in contact with powder when the powder tray rotates so as to control the material level height, a material taking area is formed in an area enclosed by the powder baffle plate and the material level control part in the powder tray, and the other area is a material feeding area;
the method for carrying out airless subpackage by the airless subpackage equipment comprises the following steps:
(1) Feeding:
firstly, feeding operation is carried out, feeding is carried out in a feeding area of a powder disc through external equipment, the powder disc rotates and simultaneously stirs materials during feeding, and feeding is stopped when the detection position of a material level sensor is reached;
(2) Controlling the material level:
adjusting the height of the material level control piece to ensure that the distance from the bottom of the material level control piece to the bottom of the powder tray reaches a preset position, and continuously contacting the bottom of the material level control piece with the upper layer of powder and limiting the material level during the rotation of the powder tray;
(3) Taking and subpackaging the filling tube assembly:
(3.1) taking:
the powder disc is driven to start to rotate according to a rated angle, the rotation angle of the powder disc is (120 +/-10 degrees) multiplied by N, wherein N is 1, 2, 3, 8230; an integer; the filling tube assembly driving mechanism drives the filling push rod and the filling insertion tube to move right above the material taking area, the filling tube assembly driving mechanism drives the filling push rod and the filling insertion tube to simultaneously descend until the bottom surface of the filling insertion tube is contacted with the bottom surface of the powder tray and the filling push rod descends to a rated distance, the rated distance is a descending stroke of the filling push rod when powder is filled in the filling material containing space once and the bottom surface of the filling push rod abuts against the part of the powder, and at the moment, the filling tube assembly finishes material taking action;
(3.2) subpackaging:
the filling pipe assembly driving mechanism drives the filling push rod and the filling insertion pipe to move upwards and move to the bottleneck of an injection sterile container such as a glass bottle, a vial, a pre-installed injector and the like, the filling pipe assembly driving mechanism drives the filling push rod to move downwards again, powder in the single filling material containing space is pushed into the injection sterile container such as the glass bottle, the vial, the pre-installed injector and the like, and then single subpackaging operation is completed;
(4) Repeating the steps (3.1) - (3.2) to carry out multiple filling operations.
2. The airless packaging method for powder filling according to claim 1, wherein: an air exhaust mechanism is arranged between the filling insertion pipe and the filling push rod, the air exhaust mechanism comprises,
an inner diameter reducing expansion part which is formed on the inner circumferential surface of the lower part of the filling insertion pipe and has gradually enlarged inner diameter from top to bottom;
the outer diameter reducing contraction part is formed on the outer peripheral surface of the middle part of the filling push rod;
the minimum inner diameter of the filling insertion pipe at the inner diameter reducing expansion part is larger than the maximum outer diameter of the filling push rod at the outer diameter reducing contraction part, and a gap between the inner circumferential surface of the filling insertion pipe and the outer circumferential surface of the filling push rod forms an exhaust gap for exhausting the filling pipe assembly during obtaining single filling.
3. The airless packaging method for powder filling according to claim 1, wherein: the filling tube assembly driving mechanism comprises a driving mechanism,
the filling insertion pipe driving mechanism drives the filling insertion pipe to move downwards so that the filling insertion pipe can obtain single filling materials, the filling insertion pipe driving mechanism comprises a filling insertion pipe vertical moving assembly, one end of the filling insertion pipe vertical moving assembly is a fixed end, the other end of the filling insertion pipe vertical moving assembly is a movable end, and the movable end of the filling insertion pipe vertical moving assembly is connected with the top end of the filling insertion pipe so as to drive the filling insertion pipe to move vertically;
the filling push rod driving mechanism drives the filling push rod to move downwards so as to properly compress the single filling material or push the single filling material out of the filling insertion tube, the filling push rod driving mechanism comprises a filling push rod 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 push rod vertical moving assembly is connected with the top end of the filling push rod so as to drive the filling push rod to vertically move;
the displacement driving mechanism for driving the filling pipe assembly to move to the container to be filled comprises a rotary power mechanism of which a rotary power output end is in transmission connection with a fixed end of the filling intubation vertical moving assembly and a fixed end of the filling push rod vertical moving assembly or a transverse moving power mechanism which is respectively arranged between the top end of the filling intubation and the movable end of the filling intubation vertical moving assembly and between the filling push rod and the movable end of the filling push rod vertical moving assembly.
4. The airless dispensing method for powder filling according to claim 2 or 3, wherein: the filling cannula driving mechanism comprises a driving device,
the elastic element is arranged between the filling push rod and the filling insertion tube, and the elastic potential energy acts on the filling push rod and the filling insertion tube in opposite directions, and the contraction/extension direction of the elastic element is the same as the moving direction of the filling push rod and the filling insertion tube;
the filling insertion pipe is limited in the vertical moving direction, so that when the bottom end of the filling insertion pipe is in contact with the bottom surface of the powder tray or the bottom end of the filling insertion pipe is positioned at a container opening, the elastic element is contracted, the filling push rod is enabled to extrude or push out a limiting piece of the filling insertion pipe for single filling through the elastic potential energy, and the limiting piece is fixed on the rack;
the displacement driving mechanism comprises a rotary power mechanism of which the rotary power output end is in transmission connection with the fixed end of the filling push rod vertical moving assembly or a transverse moving power mechanism arranged between the filling push rod and the movable end of the filling push rod vertical moving assembly.
5. The airless packaging method for powder filling according to claim 4, wherein: the filling pipe is provided with a filling pipe socket, the filling push rod is provided with a filling push rod socket, the filling push rod socket is positioned above the filling pipe socket, the filling pipe is fixed on the filling pipe socket, the filling push rod is fixed on the filling push rod socket, a plurality of vertical guide rods with the top end parts penetrating through the filling push rod socket are fixedly arranged on the filling pipe socket, and the elastic element is arranged on the outer peripheral surface of the vertical guide rods or on the outer peripheral surface of the filling push rod between the filling pipe socket and the filling push rod socket.
6. The airless packaging method for powder filling according to claim 5, wherein: a powder tray cover is arranged on the frame above the powder tray and is provided with a powder tray cover,
the powder supply port is positioned right above the charging area;
a material level control member mounting seat for controlling the height of the material level control member;
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 packaging method for powder filling according to claim 6, wherein: and a stirring piece for stirring the powder in the feeding area is arranged on the powder tray cover.
8. The airless packaging method for powder filling according to 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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