CN108313342B - Filling mechanism of injector - Google Patents
Filling mechanism of injector Download PDFInfo
- Publication number
- CN108313342B CN108313342B CN201810266599.1A CN201810266599A CN108313342B CN 108313342 B CN108313342 B CN 108313342B CN 201810266599 A CN201810266599 A CN 201810266599A CN 108313342 B CN108313342 B CN 108313342B
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- China
- Prior art keywords
- cylinder
- infusion
- needle cylinder
- unit
- liquid medicine
- Prior art date
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- 230000007246 mechanism Effects 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 87
- 239000003814 drug Substances 0.000 claims abstract description 86
- 238000001802 infusion Methods 0.000 claims abstract description 66
- 239000000919 ceramic Substances 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 238000005429 filling process Methods 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims description 3
- 230000002262 irrigation Effects 0.000 claims description 2
- 238000003973 irrigation Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 229940079593 drug Drugs 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000007799 cork Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229940071643 prefilled syringe Drugs 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229940040591 biotech drug Drugs 0.000 description 1
- 229940000406 drug candidate Drugs 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000011144 upstream manufacturing 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
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
-
- 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
- B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
- B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
- B65B43/52—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using roller-ways or endless conveyors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a filling mechanism of an injector, which comprises: the infusion unit is used for inputting liquid medicine; and the liquid filling unit is used for filling the liquid medicine input by the infusion unit into a needle cylinder on the conveying chain, and the needle cylinder of the injector can be clamped on the conveying chain and is used for conveying the needle cylinder. According to the invention, by designing the infusion unit and the liquid filling unit, a novel syringe filling mechanism is provided, and an operator omits a plurality of liquid pumping operation steps when in use, so that the use of liquid medicine is quicker, simpler, more convenient and safer, and the use rate of the liquid medicine is also improved.
Description
Technical Field
The invention belongs to the technical field of pharmaceutical machinery, and particularly relates to a filling mechanism of an injector.
Background
Syringes are a common medical device that uses a needle to withdraw or inject gas or liquid.
The medical market is changing, biotechnological therapies and the number of drug candidates that can only be administered by the injection route are increasing, and the therapeutic fields to which they relate are very widespread. Some biotech drugs require frequent administration by injection by nurses, and at this time, the prefilled syringe omits some operation steps, and is quicker and simpler to use.
The nurse is a time consuming task to load the syringe with the drug from the vial, is highly demanding to operate, is prone to error, and often has difficulty in holding the vial and measuring the correct dose.
Prefilled syringes can significantly reduce product overfill. The pre-filling injector is used, so that raw medicines can be saved.
The prefilled syringe has the remarkable advantages of safe medication, convenient use, high utilization rate of liquid medicine and the like.
When the traditional all-glass injector and the disposable plastic injector are used, when the liquid medicine is sucked or pushed through the injection needle, the residual liquid medicine in the medicine bottle or the medicine bag is always transferred, and the liquid medicine can not be fully utilized, especially a small amount of valuable liquid medicine is easy to cause the waste of the liquid medicine, and the medicine dosage is insufficient, so that the medicine effect and the treatment effect are affected. The inner cavity of the needle cylinder is directly filled with the liquid medicine, thereby improving the utilization rate of the liquid medicine and reducing the waste of the liquid medicine.
Disclosure of Invention
The invention provides a solution of a filling mechanism of a syringe, aiming at the problems that the traditional syringe cannot be fully utilized when sucking or pushing liquid medicine through an injection needle, the liquid medicine is easy to waste, the dosage of the liquid medicine is insufficient, and the drug effect and the treatment effect are affected.
The syringe filling mechanism of the present invention comprises:
The infusion unit is used for inputting liquid medicine;
And the liquid filling unit is used for filling the liquid medicine input by the infusion unit into a needle cylinder on the conveying chain, and the needle cylinder of the injector can be clamped on the conveying chain and is used for conveying the needle cylinder.
And the cylinder pressing unit is positioned at one side of the conveying chain and is used for pressing and blocking the needle cylinder from falling off in the filling process.
The infusion unit is provided with a plurality of liquid medicine adjusting parts, and the liquid medicine adjusting parts are provided with:
the hollow rod sleeve is provided with a liquid medicine inlet and a liquid medicine outlet in the middle part, and the liquid medicine outlet is communicated with the liquid filling unit;
The ceramic rod is rotatably inserted into the hollow rod sleeve, the outer surface of the ceramic rod is provided with two medicine grooves which are axially arranged, and the two medicine grooves and the axial lead of the ceramic rod are mutually clamped by 90 degrees; after the ceramic rod rotates, the medicine groove can be aligned with the medicine liquid inlet or the medicine liquid outlet of the hollow rod sleeve.
The infusion unit includes:
an infusion base and a top plate parallel to the infusion base;
the lower ends of the two side columns are respectively and vertically fixed at the two side ends of the upper surface of the transfusion base; the upper ends of the two fixing plates are vertically fixed at the two side ends of the lower surface of the top plate;
A rotating shaft penetrating into one of the two side posts;
The speed reducer is positioned at the lower part of the transfusion base and is in driving connection with the lower end of the rotating shaft;
The gears are meshed with each other in pairs and are positioned on the top plate, and the gears are in driving connection with the upper end of the rotating shaft;
the rod shafts penetrate through the top plate, the upper ends of the rod shafts are in driving connection with the gears, and the lower ends of the rod shafts are in driving connection with the ceramic rods;
and the sleeve shafts penetrate through the infusion base, the upper ends of the sleeve shafts are in driving connection with the hollow rod sleeve, and the lower ends of the sleeve shafts are in driving connection with the servo motor.
The platen unit has:
The two pressing cylinder supports and two pressing cylinder shafts respectively movably penetrate through the pressing cylinder supports;
The two ends of the pressing block assembly are respectively connected to one side of the two pressing cylinder shafts and used for pressing the side surface and the upper surface of the needle cylinder on the conveying chain so as to prevent the needle cylinder from jumping down;
And the air cylinder is connected with the other sides of the two cylinder pressing shafts and is used for pushing the cylinder pressing shafts to drive the pressure baffle assembly to be far away from or close to the cylinder on the conveying chain.
The hold-down assembly has:
The U-shaped baffle is provided with a contact pad which is positioned at the inner side of the U-shaped baffle, the contact pad is provided with a plurality of arc pad grooves which are arranged at intervals, the arc pad grooves can be opposite to the conveying chain, and the side surface of the arc pad grooves is covered with a needle cylinder on the conveying chain to fix the needle cylinder;
And the lower surface of the horizontal pressing plate can be pressed on the top surface of the needle cylinder, and the horizontal pressing plate is used for preventing the needle cylinder from being extruded in the vertical direction in the filling process.
The two sides of the contact pad are respectively provided with a slope surface for buffering the needle cylinder from sliding into the arc pad groove of the contact pad; the horizontal platen has a ramp surface for cushioning the syringe sliding into the lower surface of the platen.
The liquid filling unit has:
The lower end of the liquid filling assembly is connected with the infusion unit and is used for receiving the liquid medicine conveyed from the infusion unit;
And the lifting assembly is penetrated with the liquid filling assembly and used for lifting the liquid filling assembly to the lower end of the needle cylinder.
The irrigation assembly has:
A plurality of infusion tubes for delivering the liquid medicine;
The infusion sleeves are sleeved outside the infusion tube, and a convex ring is arranged at the upper part of each infusion sleeve;
the connecting plugs are respectively fixed at the top end of the infusion tube and can be connected with the cylinder opening of the syringe;
The springs are sleeved outside the infusion sleeve respectively, and the upper ends of the springs are abutted against the lower part of the convex ring of the infusion sleeve;
The lifting assembly has:
The upper part of the plane rack is provided with the infusion tubes in a penetrating way at intervals, the lower parts of the infusion tubes are penetrated on the plane rack by nuts, and the lower ends of the springs are propped against the plane rack;
the upper ends of the two lifting shafts are respectively fixed at two ends of the bench;
And the two cams are respectively connected with the lower end of the lifting shaft, and are used for lifting the lifting shaft and the plane rack when the cams do circular motion, so that the upper end of the infusion tube is driven to be in butt joint with the lower end of the needle cylinder of the conveying chain.
The liquid medicine inlet and the liquid medicine outlet are symmetrically distributed on two sides of the hollow rod sleeve.
The cam is a round wheel, an oval groove is formed in the inner side of the cam, and a ball is arranged in the groove and used for locking the lower end of the lifting shaft.
The conveying chain is provided with a plurality of clamping cylinder blocks connected in series, an upper clamping plate and a lower clamping plate are respectively arranged on the upper side and the lower side of each clamping cylinder block, and arc-shaped clamping grooves are respectively arranged at the corresponding positions of the upper clamping plate and the lower clamping plate and are used for embedding the needle cylinder.
The invention has the positive progress effects that: according to the invention, by designing the infusion unit and the liquid filling unit, a novel syringe filling mechanism is provided, and an operator omits a plurality of liquid pumping operation steps when in use, so that the use of liquid medicine is quicker, simpler, more convenient and safer, and the use rate of the liquid medicine is improved.
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
FIG. 1 is a perspective view of a prefilled syringe device of the present invention;
FIG. 2 is a perspective view of a conveyor chain according to the present invention;
FIG. 3 is a perspective view of the syringe plugging mechanism of the present invention;
FIG. 4A is a perspective view of a stoppering unit of the injector stoppering mechanism of the present invention;
FIG. 4B is a perspective view of the structure of FIG. 4A at another angle;
FIG. 4C is a perspective enlarged view of the plugged bottom plate;
FIG. 4D is an enlarged perspective view of a plug channel including a soft plug;
FIG. 5 is a perspective view of a stopper extruding unit of the stopper adding mechanism of the injector of the present invention;
FIG. 6A is a perspective view of a barrel unit of the syringe plugging mechanism of the present invention;
FIG. 6B is a perspective view of the combination of FIG. 6A and a conveyor chain at another angle;
FIG. 7 is a perspective view of the syringe filling mechanism of the present invention;
FIG. 8 is a perspective view of the liquid medicine adjusting member of the infusion unit of the syringe filling mechanism of the present invention;
FIG. 9 is a perspective view of an infusion unit of the syringe filling mechanism of the present invention;
FIG. 10 is a perspective view of a filling unit of the syringe filling mechanism of the present invention;
FIG. 11 is an enlarged partial perspective view of a filling assembly of a filling unit of the syringe filling mechanism of the present invention;
FIG. 12A is a perspective view of a barrel unit of the syringe filling mechanism of the present invention;
FIG. 12B is a perspective view of the structure of FIG. 12A at another angle;
FIG. 13 is a perspective view of the cap screwing mechanism of the injector of the present invention;
fig. 14A is a perspective view showing a cap unit of the cap screwing mechanism of the syringe according to the present invention;
fig. 14B is a partially enlarged perspective view of a cap unit of the cap screwing mechanism of the syringe of the present invention;
FIG. 14C is a perspective view of the alternate angle of FIG. 14B;
fig. 15 is a perspective view of a stamp unit of the injector screw capping mechanism of the present invention;
fig. 16A is a perspective view of a cap screwing unit of the cap screwing mechanism of the syringe of the present invention;
FIG. 16B is a perspective view of the alternate angle of FIG. 16A;
FIG. 16C is an enlarged partial perspective view of the cap assembly of the cap screwing unit of the cap screwing mechanism of the injector of the present invention;
FIG. 17A is a perspective view of a cartridge assembly of the cap screwing mechanism of the injector of the present invention;
FIG. 17B is a perspective view of the alternate angle of FIG. 17A;
fig. 17C is a perspective view of the combination of fig. 17A and a conveyor chain.
Detailed Description
As shown in fig. 1, the syringe prefilling device of the present invention includes a conveyor chain 10, a syringe stopper mechanism 20, a syringe filling mechanism 30, and a syringe cap screwing mechanism 40. The conveying chain 10 can clamp a syringe of an injector thereon for conveying the syringe. A syringe stopper mechanism 20, located at the periphery upstream of the conveyor chain 10, is used to squeeze the soft stopper into the bottom of the barrel cavity of the conveyor chain 10. The injector filling mechanism 30 is located at the periphery of the middle stream of the conveying chain 10 and is used for filling the liquid medicine into the plugged needle cylinder. A syringe cap screwing mechanism 40, located at the periphery downstream of the conveyor chain 10, for screwing the cap onto the lower end of the filled syringe.
As shown in fig. 2, the conveying chain 10 is provided with a plurality of clamping cylinder blocks 12 connected in series, the upper side and the lower side of the clamping cylinder blocks 12 are respectively provided with an upper clamping plate 121 and a lower clamping plate 122, and corresponding positions on the upper clamping plate 121 and the lower clamping plate 122 are respectively provided with an arc clamping groove 13 which can be used for embedding a needle cylinder.
As shown in fig. 3, the syringe stopper mechanism 20 includes a stopper unit 21 for placing a soft stopper, which may be located directly above the conveyor chain 10; a stopper extruding unit 22 for extruding the soft stopper placed in the stopper adding unit 21 into the bottom of the inner cavity of the syringe on the conveyor chain 10; and a blocking cylinder unit 23 positioned at one side of the conveyor chain 10 for blocking the syringe from sliding down.
As shown in fig. 4A to 4D, the plugging unit 21 includes: the plugging base plate 211, the plugging base plate 211 is positioned above the conveying chain 10, the plugging base plate 211 is fixed on a linear feeder 218 (model: YQdc-190; manufacturer: dongguan industry precise automation equipment limited company), the side of the linear feeder 218 close to the round hole 217 is lower, the side far away from the round hole 217 is higher, the linear feeder 218 is fixed on a plugging base 219, and the plugging base 219 is supported by two cylinders; the plug channels 212 are positioned on the upper surface of the plug adding bottom plate 211, the plug channels 212 are parallel to each other and are used for transporting soft plugs, and the inner walls 213 of the two side grooves of the plug channels 212 are respectively provided with a convex rib 214 which can clamp and guide the soft plugs; a plurality of round holes 217, wherein the round holes 217 vertically penetrate through the bottom 215 of one end of the plug channel 212 respectively and are used for soft plugs to fall into the needle cylinder of the conveying chain 10; the plug baffle 216 is vertically fixed at one end of the plug base plate 211 close to the round hole 217 and is used for blocking a soft plug transported in the plug channel 212 so as to prevent the soft plug from falling; a vibration disk (not shown) (manufacturer: kunshan vibration agility automation equipment technologies limited) houses a number of plugs therein for screening the flow of plugs to the plug channel 212 and into the plug channel 212 directly above the circular aperture 217 and may be blocked by the plug baffle 216.
As shown in fig. 5, the squeeze plug unit 22 has: a squeeze plug holder 221, and squeeze plug shafts 222 respectively movably penetrating the squeeze plug holder 221; the two ends of the extrusion upper plate 223 are respectively connected with the upper end of the extrusion plug shaft 222, and a plurality of extrusion needles 224 which are vertically downward are fixed on the extrusion upper plate 223 and can be positioned right above the needle cylinder of the conveying chain 10 for extruding and poking the soft plug into the bottom of the inner cavity of the needle cylinder; two cams 225, which are positioned below the squeeze plug bracket 221, wherein the cams 225 are respectively connected with the lower part of the squeeze plug shaft 222 by a connecting rod 226, the circular motion of the cams 225 drives the squeeze upper plate 223 to reciprocate up and down, the cams 225 are round wheels, the inner sides of the cams 225 are provided with oval grooves 227, and the grooves are provided with balls 228 for locking one end of the connecting rod 226; the speed reducer 229 is connected to the axes of the two cams 225, and is used for driving the cams 225 to perform circular motion.
As shown in fig. 6A to 6B, the barrier cylinder unit 23 includes: two cylinder block supports 231 and two cylinder block shafts 232 respectively penetrating through the cylinder block supports; the U-shaped baffle 233, both ends connect to one side of two cylinder blocking shafts 232 separately, is used for keeping out the side of the needle cylinder on the conveying chain 10, in order to prevent the needle cylinder from breaking away from the conveying chain 10, the U-shaped baffle has contact pads 234, lie in U-shaped baffle 233 inboard, the contact pad has several arc pad slots 235 that set up at intervals, the arc pad slot 235 is right opposite to conveying chain 10, is used for covering the needle cylinder on the conveying chain 10 in order to fix the needle cylinder, there are sloping surfaces 236 on both sides of contact pad 234 separately, is used for buffering the needle cylinder to slide into arc pad slot 235 of contact pad 234; the air cylinder 237 is connected with the other side of the two cylinder blocking shafts 232 and is used for pushing the cylinder blocking shafts 232 to drive the U-shaped baffle 233 to be far away from or close to the cylinder on the conveying chain 10.
As shown in fig. 7, the syringe filling mechanism 30 includes an infusion unit 31 for inputting a medical fluid; a filling unit 32 for filling the liquid medicine inputted from the infusion unit into the cylinder on the conveyor chain 10; the cylinder pressing unit 33 is located at one side of the conveying chain 10 and is used for pressing and blocking the syringe to fall off in the filling process.
As shown in fig. 8, the infusion unit 31 includes a plurality of chemical metering members 311, and the chemical metering members 311 include: the hollow rod sleeve 3111 is provided with a liquid medicine inlet 3112 and a liquid medicine outlet 3113 at the middle part, and the liquid medicine outlet 3113 is communicated to a transfusion tube 3211 of the liquid filling unit 32; a ceramic rod 3114 rotatably inserted into the hollow rod sleeve 3111, the outer surface of the ceramic rod 3114 having two axial medicine grooves 3115, the two medicine grooves 3115 being sandwiched by the axial lines of the ceramic rod 3114 by 90 °; after the ceramic rod 3114 is rotated, the medicine slot 3115 may be aligned with the medicine liquid inlet 3112 or the medicine liquid outlet 3113 of the hollow rod sleeve 3111, and the medicine liquid inlet 3112 and the medicine liquid outlet 3113 may be symmetrically disposed at both sides of the hollow rod sleeve 3111. As shown in fig. 9, the infusion unit 31 further includes: an infusion base 312, and a top plate 313 parallel to the infusion base 312; two side columns 314, the lower ends of which are respectively and vertically fixed at two side ends of the upper surface of the transfusion base 312; the upper ends thereof are vertically fixed to both side ends of the lower surface of the top plate 313; a rotation shaft penetrating into one side column 314 of the two side columns 314; the decelerator 315 is positioned at the lower part of the transfusion base 312 and is in driving connection with the lower end of the rotating shaft; a plurality of gears 316, which are engaged with each other, are positioned on the top plate 313, and the gears 316 are in driving connection with the upper end of the rotating shaft; a plurality of rod shafts 317 penetrating through the top plate 313, having upper ends drivingly connected to the gears 316 and lower ends drivingly connected to the ceramic rods 3114; a plurality of sleeve shafts 318 penetrate through the infusion base 312, the upper ends of the sleeve shafts 318 are in driving connection with the hollow rod sleeve 3111, and the lower ends of the sleeve shafts 318 are in driving connection with the servo motor 319.
As shown in fig. 10 to 11, the filling unit 32 includes: the liquid filling assembly 321, the lower end of which is connected with the infusion unit 31 and is used for receiving the liquid medicine delivered from the infusion unit 31; and the lifting assembly 322 is provided with a filling assembly 321 in a penetrating way and is used for lifting the filling assembly 321 to the lower end of the needle cylinder.
The drip assembly 321 has: a plurality of infusion tubes 3211 for delivering a drug solution; a plurality of infusion sleeves 3212 are sleeved outside the infusion tube 3211, and convex rings 3213 are arranged at the upper part of the infusion sleeves 3212; a plurality of connecting plugs 3214 which are respectively fixed at the top ends of the infusion tubes 3211 and can be connected with the cylinder mouth of the syringe; a plurality of springs 3215 are respectively sleeved outside the infusion sleeve 3212, and the upper ends of the springs are abutted against the lower part of the convex rings 3213 of the infusion sleeve 3212;
The lifting assembly 322 has: the plane stand 3221 is provided with infusion tubes 3211 at intervals, the lower part of the infusion tube 3211 is arranged on the plane stand 3221 in a penetrating manner by nuts, and the lower end of the spring 3215 is abutted against the plane stand 3221; the upper ends of the two lifting shafts 3222 are respectively fixed at the two ends of the plane bench 3221; the two cams 3223 are respectively connected with the lower end of the lifting shaft 3222, and when the cams 3223 do circular motion, the cams 3223 are used for lifting the lifting shaft 3222 and the plane rack 3221, so that the upper end of the infusion tube 3211 is driven to be in butt joint with the lower end of a needle cylinder of the conveying chain 10, the cams 3223 are round wheels, the inner sides of the round wheels are provided with oval grooves 3224, and balls 3225 are arranged in the grooves and used for locking the lower end of the lifting shaft 3222.
As shown in fig. 12A to 12B, the platen unit 33 includes: two press cylinder supports 331, and two press cylinder shafts 332 respectively penetrating the press cylinder supports 331 movably; the pressing and blocking assembly 333, two ends of which are respectively connected to one side of the two pressing cylinder shafts 332, is used for pressing and blocking the lateral surface and the upper surface of the needle cylinder on the conveying chain 10 so as to prevent the needle cylinder from jumping down; the pressing assembly 333 has a U-shaped baffle 3331, the U-shaped baffle 3331 has a contact pad 3334, the contact pad 3334 has a plurality of arc pad grooves 3335 arranged at intervals, the arc pad grooves 3335 are opposite to the conveyor chain 10, the side faces of the contact pad 3334 are covered with the needle cylinder on the conveyor chain 10 to fix the needle cylinder, and both sides of the contact pad 3334 are respectively provided with a slope surface 3336 for buffering the needle cylinder from sliding into the arc pad grooves 3335 of the contact pad 3334; the pressing assembly 333 further comprises a horizontal pressing plate 3332, wherein the lower surface of the horizontal pressing plate 3332 can be pressed on the top surface of the syringe to prevent the syringe from being extruded in the vertical direction in the filling process, and the horizontal pressing plate 3332 further comprises a slope surface 3337 for buffering the syringe from sliding into the lower surface of the horizontal pressing plate 3332; the cylinder 3333 is connected with the other sides of the two cylinder pressing shafts 332 and is used for pushing the cylinder pressing shafts 332 to drive the U-shaped baffle 3331 to be far away from or close to the cylinder on the conveying chain 10.
As shown in fig. 13, the injector cap screwing mechanism 40 includes a cap placing unit 41 for placing a cap to be capped on a cylinder; a stamping unit 42 for stamping the cartridge set in the set-up unit 41 out of the set-up unit 41 into the screwing unit 43; a cap screwing unit 43 for receiving the cap from the cap placing unit 41 and screwing the cap to the lower end of the cylinder; and a drum assembly 44.
As shown in fig. 14A to 14C, the cover unit 41 includes: the cover base 411, one side of which extends outwards to form a plurality of protruding parts 4111 which are arranged at intervals, a circular through hole 4112 which is used for the cylinder cover to pass through and vertically penetrates through the protruding parts 4111 is formed in the protruding parts 4111, a cover channel 4113 is formed in the upper surface of the cover base 411, and the cover channel 4113 is communicated with the circular through hole 4112 on the protruding parts 4111; the cover unit 41 further comprises a vibration plate (not shown) (manufacturer: kunshan Jie Automation Equipment technology Co., ltd.), in which a plurality of covers are placed, for screening the flow of the covers to the cover channel 4113 and into the circular through hole 4112 of the boss 4111, and held by the cover holder 412; a plurality of pairs of supporting cover members 412, each pair of supporting cover members 412 being disposed opposite to each other and being located at two sides of the protruding portion 4111, the supporting cover members 412 having a heavy end 4121 and a light end 4122 integrally formed with the heavy end 4121; the heavy end 4121 is pivotally connected to the side of the cover base 411, the light end 4122 has a thin crescent end 4123, the light end 4122 abuts against the lower surface of the boss 4111 under the action of gravity, and the thin crescent end 4123 extends into the circular through hole 4112 of the boss 4111. When the cap is positioned in the circular through hole 4112, the cap is held by the thin crescent shaped ends 4123 of the two opposing cap holders 412.
As shown in fig. 15, the stamp capping unit 42 has: a poking support 421 and two poking shafts 422 respectively penetrating through both sides of the poking support 421; the upper stamping plate 423, two ends of which are respectively connected with the top end of the stamping shaft 422, wherein the upper stamping plate 423 is fixedly provided with a plurality of vertically downward stamping rods 424 which can be positioned right above the circular through holes 4112 of the protruding parts 4111 and used for stamping the cylinder cover placed on the circular through holes 4112 of the protruding parts 4111 into the rotary cover unit 43; two cams 425, which are positioned below the stamping support 421, wherein the cams 425 are respectively connected with the lower end of the stamping shaft 422, and the stamping upper plate 423 is driven to reciprocate up and down by the circular motion of the cams 425; the motor 426 is connected with the axle center of the cam 425 and is used for driving the cam 425 to do circular motion, the cam 425 is a round wheel, an elliptical groove 427 is formed in the inner side of the round wheel, and a ball 428 is arranged in the groove and is used for locking the lower end of the stamping shaft 422.
As shown in fig. 16A to 16C, the cap screwing unit 43 includes: a cap screwing assembly 431, the cap screwing assembly 431 may be located right below the circular through hole 4112 of the boss 4111, for receiving the cap from the cap placing unit 41 and screwing the cap onto the lower end of the syringe on the conveyor chain 10; the lifting component 432 is provided with a spiral cover component 431 in a penetrating way and is used for lifting the spiral cover component 431 to the lower end of the needle cylinder.
The cap assembly 431 has: a plurality of cap screwing shafts 4311 arranged at intervals; the gears 4312 are meshed with each other, and a spiral cover shaft 4311 is respectively arranged in the center of each gear 4312 in a penetrating way; a motor 4313 connected to the gear 4312 engaged with each other, and driving the gear 4312 to rotate; a plurality of cap 4314, in which a cylinder cap is arranged, the cap 4314 is screwed on the top end of the cap screwing shaft 4311; a plurality of shaft sleeves 4315, wherein the shaft sleeves 4315 are respectively sleeved outside the screw cap shaft 4311; the springs 4316 are respectively sleeved on the lower part of the screw cap shaft 4311, the upper ends of the springs 4316 are abutted against the lower part of the shaft sleeve 4315, and the lower ends of the springs 4316 are abutted against the screw cap lower platform 4323.
The pull assembly 432 has: the upper cover rotating platform 4321, and the middle part of the cover rotating shaft 4311 is movably penetrated on the upper cover rotating platform 4321; the horizontal cylinder 4322 is connected with the middle part of the upper screw cap platform 4321 and is used for horizontally moving the screw cap assembly 431; the lower screw cap platform 4323 is parallel to the upper screw cap platform 4321, and the bottom of the screw cap shaft 4311 is arranged on the upper surface of the lower screw cap platform 4323 in a penetrating way; and a lifting cylinder 4324 connected to the lower surface of the cap screwing lower stage 4323 for vertically lifting the cap screwing assembly 431.
As shown in fig. 17A to 17C, the syringe cap screwing mechanism further includes:
The blocking barrel assembly 44, the blocking barrel assembly 44 comprises a pressing barrel 441 and a blocking barrel 442; the barrel pressing piece 441 is fixed above the conveying chain 10, and is used for blocking the needle cylinder from moving upwards; the cylinder stopper 442 is located at one side of the conveyor chain 10 to prevent the syringe from falling.
A plurality of round holes 4411 are formed in the barrel pressing piece 441 at intervals, and the round holes 4411 are opposite to the needle cylinder on the conveying chain 10 and are used for detecting that optical fibers penetrate into the needle cylinder;
The cartridge stopper 442 includes:
two cartridge posts 4421;
A U-shaped baffle 4423, wherein two ends of the U-shaped baffle 4423 are respectively connected to one ends of the two cylinder-blocking pillars 4421, the U-shaped baffle 4423 has a plurality of block-shaped contact pads 4424, the block-shaped contact pads 4424 are positioned inside the U-shaped baffle 4423, the block-shaped contact pads 4424 have arc-shaped pad grooves 4425, the arc-shaped pad grooves 4425 can face the conveyor chain 10, and the side surfaces of the arc-shaped pad grooves 4425 are covered with the needle cylinders on the conveyor chain 10 to fix the needle cylinders;
A plurality of small air cylinders 4426, wherein the pistons of the small air cylinders 4426 movably penetrate through the U-shaped baffle 4423 and are respectively connected with the plurality of block-shaped contact pads 4424 so as to adjust the block-shaped contact pads 4424 to be far away from or close to the needle cylinder on the conveying chain 10.
The working principle of the injector prefilling device of the invention is as follows:
As shown in fig. 3, the cork is screened in a vibrating tray (not shown) (manufacturer: kunshan vibration agility automation equipment science, ltd.) and after vibration screening, the cylindrical surface of the cork faces upward, the conical surface faces downward, enters the cork channel 212, and is then transported to right above the round hole 217 and is blocked by the cork blocking plate 216.
The two cams 225 are driven by the speed reducer 229 to perform circular motion, and the extruding needles 224 of the extruding upper plate 223 are driven to perform vertical downward motion, as shown in fig. 4A to 4D and fig. 5, the cork placed right above the circular hole 217 is subjected to the pressure of the extruding needles 224, passes through the circular hole 217, and falls into the needle cylinder right below. As shown in fig. 6A to 6B, in this process, the air cylinder 237 drives the U-shaped baffle 233 of the blocking cylinder unit 23 to move horizontally and inwardly, and the arc-shaped pad groove 235 of the contact pad 234 inside the U-shaped baffle 233 on the blocking cylinder unit 23 covers the needle cylinder on the conveyor chain 10 to prevent the needle cylinder from falling.
At this point, as shown in fig. 5, the squeeze needle 224 continues to apply force, squeezing the soft stopper into the bottom of the interior cavity of the syringe.
When the plugging is completed, the extruding needle 224 is driven by the speed reducer 229 to vertically move upwards to be separated from the needle cylinder. The U-shaped shield 233 moves horizontally outward away from the syringes on the conveyor chain 10.
The conveyor chain 10 continues to move forward.
As shown in fig. 7, the movement of the conveyor chain 10 is stopped when the syringes transported by the conveyor chain 10 are moved directly above the drip assembly 32.
As shown in fig. 8 to 9, the decelerator 315 drives the gears 316 engaged with each other, thereby driving the ceramic rod 3114 at the upper portion of the infusion unit 31 to twist clockwise or counterclockwise by the driving force, and when the medicine slot 3115 at the outer surface of the ceramic rod 3114 is twisted to be aligned with the medicine liquid inlet 3112 of the hollow rod housing 3111, the hollow rod housing 3111 at the outer side of the ceramic rod 3114 is vertically lifted by the driving force of the servo motor 319 to draw the medicine liquid to a certain amount. After the drawing of the drug solution is completed, the ceramic rod 3114 is twisted again until the drug groove 3115 on the outer surface thereof is aligned with the drug solution outlet 3113 of the hollow rod sleeve 3111, and at this time, the drug solution flows from the infusion unit 31 into the infusion unit 32.
As shown in fig. 10, when the liquid medicine flows into the liquid filling unit 32, the two cams 3223 drive the liquid filling assembly 32 to vertically move upwards, and the movement is stopped after the liquid medicine contacts the lower end of the syringe, and the liquid filling assembly 32 fills the liquid medicine into the syringe.
As shown in fig. 12A-12B, in this process, the air cylinder 3333 drives the U-shaped baffle 3331 to move horizontally inwards, and after the arc-shaped pad groove 3335 of the inner contact pad 3334 covers the needle cylinder on the conveying chain 10, the needle cylinder is prevented from sliding down during filling. The U-shaped baffle 3331 is fixedly provided with a horizontal pressing plate 3332, and the lower surface of the horizontal pressing plate 3332 can be pressed on the top surface of the syringe to prevent the syringe from being jumped out in the vertical direction in the filling process.
After filling is completed, the filling assembly 32 is moved vertically away from the lower end of the syringes and the U-shaped rail 3331 is moved horizontally outwardly away from the syringes on the conveyor chain 10, as shown in FIG. 7.
The conveyor chain 10 continues to move forward.
As shown in fig. 13, when the cylinder transported by the conveyor chain 10 moves to the opposite side of the U-shaped stopper 4423, the movement of the conveyor chain 10 is stopped.
As shown in fig. 14A to 14C, the cartridge cover is screened in a vibration tray (not shown) (manufacturer: kunshan vibration agility automation equipment science limited), and after screening, the inner surface of the cartridge cover faces upward and the outer surface faces downward, enters a cover channel 4113 communicating with the cover base 411, is then carried into a circular through hole 4112 of a boss 4111 on one side of the cover base 411, and is held by a cover support 412.
Subsequently, as shown in fig. 15, the stamp stick 424 moves vertically downward, and stamps the cartridge placed on the circular through hole 4112 of the boss 4111 into the cap 4314 of the screw cap unit 43 shown in fig. 16A to 16C.
As shown in fig. 17A to 17C, in this process, the horizontal cylinder 4322 drives the U-shaped baffle 4423 of the cylinder 441 to move horizontally inward, and after the arc-shaped pad groove 4425 of the block-shaped contact pad 4424 on the inner side of the U-shaped baffle 4423 covers the needle cylinder on the conveyor chain 10, the needle cylinder is prevented from sliding down. The U-shaped baffle 4423 is fixed with a pressing barrel 441, and the lower surface of the pressing barrel 441 can be pressed on the top surface of the syringe to prevent the syringe from being extruded in the vertical direction in the process of screwing the cap.
As shown in fig. 13, the cap screwing assembly 431 is driven by the lifting cylinder 4324 to vertically move upwards until the cap head 4314 contacts the lower end of the syringe, the movement is stopped, and then the gear 4312 on the cap screwing assembly 431 is driven by the motor 4313 to screw the cap.
The cap assembly 431 moves vertically downward after the cap is tightened, away from the lower end of the barrel. The U-shaped baffle 4423 moves horizontally outwardly away from the syringes on the conveyor chain 10.
The invention provides a pre-filling device of an injector in the pre-filling process of liquid medicine, which is used for directly containing the liquid medicine in the inner cavity of a needle cylinder, so that the utilization rate of the liquid medicine is improved, and the waste of the liquid medicine is reduced.
Claims (7)
1. A syringe filling mechanism comprising:
The infusion unit is used for inputting liquid medicine;
The liquid filling unit is used for filling the liquid medicine input by the infusion unit into a needle cylinder on a conveying chain, and the needle cylinder of the injector can be clamped on the conveying chain and is used for conveying the needle cylinder;
the cylinder pressing unit is positioned at one side of the conveying chain and used for pressing and blocking the needle cylinder from falling off in the filling process;
the liquid filling unit has:
The lower end of the liquid filling assembly is connected with the infusion unit and is used for receiving the liquid medicine conveyed from the infusion unit;
The lifting assembly is penetrated with the liquid filling assembly and used for lifting the liquid filling assembly to the lower end of the needle cylinder;
The platen unit has:
The two pressing cylinder supports and two pressing cylinder shafts respectively movably penetrate through the pressing cylinder supports;
The two ends of the pressing block assembly are respectively connected to one side of the two pressing cylinder shafts and used for pressing the side surface and the upper surface of the needle cylinder on the conveying chain so as to prevent the needle cylinder from jumping down;
the cylinder is connected with the other sides of the two cylinder pressing shafts and is used for pushing the cylinder pressing shafts to drive the pressure baffle assembly to be far away from or close to a cylinder on the conveying chain;
The hold-down assembly has:
The U-shaped baffle is provided with a contact pad which is positioned at the inner side of the U-shaped baffle, the contact pad is provided with a plurality of arc pad grooves which are arranged at intervals, the arc pad grooves can be opposite to the conveying chain, and the side surface of the arc pad grooves is covered with a needle cylinder on the conveying chain to fix the needle cylinder;
the horizontal pressing plate is fixedly connected to the U-shaped baffle plate, and the lower surface of the horizontal pressing plate can be pressed on the top surface of the needle cylinder and is used for preventing the needle cylinder from being extruded in the vertical direction in the filling process;
The two sides of the contact pad are respectively provided with a slope surface for buffering the needle cylinder from sliding into the arc pad groove of the contact pad; the horizontal platen has a ramp surface for cushioning the syringe sliding into the lower surface of the horizontal platen.
2. The syringe filling mechanism of claim 1, wherein: the infusion unit is provided with a plurality of liquid medicine adjusting parts, and the liquid medicine adjusting parts are provided with:
the hollow rod sleeve is provided with a liquid medicine inlet and a liquid medicine outlet in the middle part, and the liquid medicine outlet is communicated with the liquid filling unit;
The ceramic rod is rotatably inserted into the hollow rod sleeve, the outer surface of the ceramic rod is provided with two medicine grooves which are axially arranged, and the two medicine grooves and the axial lead of the ceramic rod are mutually clamped by 90 degrees; after the ceramic rod rotates, the medicine groove can be aligned with the medicine liquid inlet or the medicine liquid outlet of the hollow rod sleeve.
3. The syringe filling mechanism of claim 2, wherein: the infusion unit includes:
an infusion base and a top plate parallel to the infusion base;
the lower ends of the two side columns are respectively and vertically fixed at the two side ends of the upper surface of the transfusion base; the upper ends of the two fixing plates are vertically fixed at the two side ends of the lower surface of the top plate;
A rotating shaft penetrating into one of the two side posts;
The speed reducer is positioned at the lower part of the transfusion base and is in driving connection with the lower end of the rotating shaft;
The gears are meshed with each other in pairs and are positioned on the top plate, and the gears are in driving connection with the upper end of the rotating shaft;
the rod shafts penetrate through the top plate, the upper ends of the rod shafts are in driving connection with the gears, and the lower ends of the rod shafts are in driving connection with the ceramic rods;
and the sleeve shafts penetrate through the infusion base, the upper ends of the sleeve shafts are in driving connection with the hollow rod sleeve, and the lower ends of the sleeve shafts are in driving connection with the servo motor.
4. The syringe filling mechanism of claim 1, wherein:
The irrigation assembly has:
A plurality of infusion tubes for delivering the liquid medicine;
The infusion sleeves are sleeved outside the infusion tube, and a convex ring is arranged at the upper part of each infusion sleeve;
the connecting plugs are respectively fixed at the top end of the infusion tube and can be connected with the cylinder opening of the syringe;
The springs are sleeved outside the infusion sleeve respectively, and the upper ends of the springs are abutted against the lower part of the convex ring of the infusion sleeve;
The lifting assembly has:
The upper part of the plane rack is provided with the infusion tubes in a penetrating way at intervals, the lower parts of the infusion tubes are penetrated on the plane rack by nuts, and the lower ends of the springs are propped against the plane rack;
the upper ends of the two lifting shafts are respectively fixed at two ends of the bench;
And the two cams are respectively connected with the lower end of the lifting shaft, and are used for lifting the lifting shaft and the plane rack when the cams do circular motion, so that the upper end of the infusion tube is driven to be in butt joint with the lower end of the needle cylinder of the conveying chain.
5. The syringe filling mechanism of claim 2, wherein: the liquid medicine inlet and the liquid medicine outlet are symmetrically distributed on two sides of the hollow rod sleeve.
6. The syringe filling mechanism of claim 4, wherein: the cam is a round wheel, an oval groove is formed in the inner side of the cam, and a ball is arranged in the groove and used for locking the lower end of the lifting shaft.
7. The syringe filling mechanism of claim 1, wherein: the conveying chain is provided with a plurality of clamping cylinder blocks connected in series, an upper clamping plate and a lower clamping plate are respectively arranged on the upper side and the lower side of each clamping cylinder block, and arc-shaped clamping grooves are respectively arranged at the corresponding positions of the upper clamping plate and the lower clamping plate and are used for embedding the needle cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266599.1A CN108313342B (en) | 2018-03-28 | 2018-03-28 | Filling mechanism of injector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266599.1A CN108313342B (en) | 2018-03-28 | 2018-03-28 | Filling mechanism of injector |
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| CN108313342A CN108313342A (en) | 2018-07-24 |
| CN108313342B true CN108313342B (en) | 2024-05-07 |
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| CN111301734A (en) * | 2020-03-12 | 2020-06-19 | 刘帮学 | Face cream canning device |
| CN111532462B (en) * | 2020-06-09 | 2024-07-09 | 广东瀚森生物科技有限公司 | Filling device for filling needle of injector |
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