Automatic ampoule opener

Abstract

An automatic ampoule opener comprises a track, along which an ampoule manual placement station, a tightening station, an ampoule cutting station and an ampoule mouth opening station are sequentially arranged, a slide seat and a slide seat driving device are arranged on the track, a fixture is detachably connected to the slide seat, the fixture comprises a fixture base, a slider is arranged on the base, the slider comprises a left slider and a right slider, two ball screws of the same type are arranged on both sides of the left slider and the right slider, threads are respectively arranged at both ends of the ball screw, the spiral directions of the threads at both ends of the ball screw are opposite, two nuts are respectively screwed on the threads at both ends of the ball screw which are opposite to each other, and the two nuts are respectively fixed on the left slider and the right slider. The invention provides an automatic ampoule opener, which can automatically perform ampoule opening operations in batches, has high work efficiency, can effectively reduce labor costs, and improve the work efficiency of medical staff.

Description

Technical Field

[0001] The invention relates to an automatic ampoule opener, belonging to the technical field of medical devices. Background Art

[0002] Ampoules are currently commonly used pharmaceutical containers, and their volumes are usually 1, 2, 5, 10, 20 ml and other specifications. Before opening the ampoule, it is necessary to manually cut a scratch on the bottleneck with a grinding wheel and then break the bottleneck. Compared with other pharmaceutical packaging methods, ampoule bottles have the advantages of low packaging cost and easy operation. However, since cutting tools such as grinding wheels are required when opening, defective ampoules or incorrect operations may cause the nipple or even the bottle body to be broken when opening the ampoule, causing injuries to medical staff and possible glass fragments falling into the liquid medicine to cause contamination. In addition, the daily use of ampoules in various medical institutions is very large. In many hospitals, central liquid preparation rooms are set up to open and prepare liquid medicines, which takes up high labor and time costs. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic ampoule opener, which can automatically perform ampoule opening operations in batches, has high work efficiency, can effectively reduce labor costs, and improve the work efficiency of medical staff.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: an automatic ampoule opener, the automatic ampoule opener includes a track, along which an ampoule manual placement station, a tightening station, an ampoule cutting station and an ampoule mouth opening station are sequentially arranged, a slide seat and a slide seat driving device are arranged on the track, a fixture is detachably connected to the slide seat, and the slide seat can drive the fixture to pass through the manual placement station, the tightening station, the ampoule cutting station and the ampoule mouth opening station in sequence along the track under the drive of the slide seat driving device, the fixture includes a fixture base, a slider is arranged on the base, the slider includes a left slider and a right slider, the left slider and the right slider can reciprocate toward each other along a slideway arranged on the base, and two same-type sliders are arranged on both sides of the left slider and the right slider. A ball screw, with threads being arranged at both ends of the ball screw, the spiral directions of the threads at both ends of the ball screw being opposite, two nuts being screwed on the threads at both ends of the ball screw in opposite directions, the two nuts being fixed on the left slider and the right slider respectively, and a fastener being fixed on one end of the ball screw; a clamp loosening device being arranged on the tightening station, the clamp loosening device comprising a tightening transverse driving device and a loosening power device, a tightening clamping device matching the fastener on the ball screw being arranged at the power output end of the loosening power device, the tightening transverse driving device horizontally drives the tightening clamping device to reciprocate in the horizontal direction toward the direction of the clamp, and the loosening power device cooperates with the tightening clamping device and the fastener to control the forward and reverse rotation of the ball screw; the ampoule The cutting station is provided with an ampoule cutting device, which includes a cutting head and a cutting head driving device, and the cutting head driving device can drive the cutting head to cut off the ampoule bottle mouth fastened on the clamp; the ampoule mouth opening station is provided with an ampoule bottle opening device, and the ampoule bottle opening device includes a bottle mouth clamping device and a bottle mouth rotation driving device, the bottle mouth clamping device clamps the ampoule bottle mouth, and the bottle mouth rotation driving device drives the bottle mouth clamping device to rotate and break the ampoule bottle mouth; further, the track is a circular track, and the ampoule manual placement station, the tightening station, the ampoule cutting station and the ampoule mouth opening station are arranged in sequence along the circumference of the circular track; the tightening transverse driving device and the loosening power device are servo motors, and the servo motors arranged at the loosening power device The output end of the machine is provided with a torque sensor, the fastener is a square head screw head or a hexagonal screw head, the fastening clamping device is a mechanical finger or a nut matched with a square head nut or a hexagonal nut; the cutting head driving device includes a cutting head horizontal driving motor and a cutting head vertical driving motor, the cutting head is a cutting grinding wheel or a metal cutting blade, the cutting head horizontal driving motor and the cutting head vertical driving motor drive the cutting head to reciprocate in the horizontal and vertical directions; the ampoule mouth opening station is provided with an opening horizontal driving motor and an opening vertical driving motor, the bottle mouth clamping device is a mechanical finger, the mechanical finger is driven to open and close by a clamping servo motor, and the opening horizontal driving motor and the opening vertical driving motor drive the mechanical finger to reciprocate in the horizontal and vertical directions;Furthermore, the left slider and the right slider arranged on the fixture each include an upper connecting block and a lower connecting block, two rollers are arranged between the upper connecting block and the lower connecting block, and the left slider and the right slider are arranged in a mirror image relative to the horizontal axis of the fixture; an origin positioning proximity switch is arranged on the fixture base; the ampoule cutting station is provided with a roller driving device, the roller driving device includes a telescopic motor and a driving wheel arranged on the output end of the telescopic motor, the horizontal position of the driving wheel corresponds to the horizontal position of the roller, the horizontal position of the rotating shaft of the driving wheel is located in the middle of the two rollers, and the driving wheel is driven to rotate by the driving motor; further, at least two positioning magnets are respectively arranged on the slide seat and the fixture base, and the positioning magnets on the fixture base correspond to the positions of the positioning magnets on the slide seat; further, the ampoule cutting station and the ampoule mouth opening The starting station is provided with a clamp clamping device, which includes a clamp arm horizontal drive motor and two clamp arms, the two clamp arms are respectively located on both sides of the clamp base, the two clamp arms open and close under the action of the clamp arm drive motor, and the clamp arm horizontal drive motor drives the clamp arms to reciprocate in the horizontal direction; further, the ampoule cutting station is provided with a purge head, the purge head is connected to the compressed air source, and the outlet direction of the purge head is toward the direction of the cutting head; further, a horizontal pressure spring is provided at the bottom of the cutting head, and a pressure sensor is abutted at the bottom of the pressure spring; further, a plurality of slides are provided on the track of the automatic ampoule opener; the left slider and the right slider on the clamp are both provided with a plurality of upper connecting blocks and lower connecting blocks corresponding to each other, and the upper connecting blocks and the lower connecting blocks of the right slider and the left slider are respectively connected as one body. ;

[0005] The positive and beneficial technical effects of the present invention are as follows: the present invention can realize the operation of mechanically automatically opening ampoule bottles in batches by sequentially arranging an ampoule manual placement station, a tightening station, an ampoule cutting station and an ampoule mouth opening station along the track; a clamp is detachably connected to the slide seat of the track, which is convenient for integration with medical machinery such as automatic liquid dispensers, improves applicability, and can operate multiple ampoules at the same time; the bidirectional lead screw arranged on the clamp cooperates with the PLC control system to automatically identify the ampoule model, improves the degree of automation of the equipment, and reduces erroneous operations; by arranging a roller on the clamp that cooperates with the drive wheel, the ampoule bottle can be rotated when cutting the bottleneck to ensure the opening quality; the purge head arranged at the cutting station can reduce the contamination of the medicine solution by debris generated during the working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall layout of an embodiment of the present invention.

[0007] Figure 2 It is a schematic structural diagram of a clamp according to an embodiment of the present invention.

[0008] Figure 3 The figure is a top view of a clamp according to an embodiment of the present invention.

[0009] Figure 4 The figure is a schematic structural diagram of a cutting station according to an embodiment of the present invention.

[0010] Figure 5 The figure is a schematic structural diagram of a neck breaking station according to an embodiment of the present invention.

[0011] Figure 6 It is a schematic structural diagram of a clamping device according to an embodiment of the present invention.

[0012] Figure 7 The figure is a schematic diagram of the structure of a ball screw arranged on a fixture according to an embodiment of the present invention. DETAILED DESCRIPTION

[0013] In order to more fully explain the implementation of the present invention, the following implementation examples of the present invention are provided. These implementation examples are merely elaborations of the present invention and do not limit the scope of the present invention. The present invention is further explained in detail in conjunction with the accompanying drawings, which are marked as follows: 1. arc track; 2. manual placement station; 3. fastening station; 4. ampoule cutting station; 5. ampoule opening station; 6. track motor; 7. fixture release station; 8. fixture tightening device at the fastening station; 9. ampoule cutting device; 10; ampoule bottle opening device; 11. fixture tightening device at the fixture release station; 12. left slider; 13. right slider; 14. nut A; 15. nut B; 16. lower connecting block; 17. upper connecting block; 18. roller; 19. ball screw; 20. square bolt; 21. cutting blade; 22. pressure spring; 23. cutting head horizontal drive motor; 24. cutting head vertical drive motor; 25. telescopic motor; 26. driving wheel; 27. Drive motor; 28. Turn on vertical drive motor; 29. ​​Clamp servo motor; 30. Mechanical finger; 31. Tighten lateral drive servo motor; 32. Clamp arm horizontal drive motor; 33. Clamp arm; 34. Positioning magnet; 35. Turn on horizontal drive motor; 36. Cutting disc rotation motor; 37. Neck folding rotation motor.

[0014] As shown in the figure: the automatic ampoule opener includes an arc track 1, along which are arranged in sequence an ampoule manual placement station 2, a tightening station 3, an ampoule cutting station 4 and an ampoule mouth opening station 5, a plurality of slides are arranged on the arc track, in this embodiment, six slides are arranged on the arc track, the slides are driven by a track motor 6 to rotate counterclockwise along the arc track, in this embodiment, the slide and the fixture are magnetically connected, and positioning magnets 34 are arranged on the slide and the fixture, the positioning magnets on the slide and the fixture correspond to each other up and down and have opposite magnetic poles facing each other, the advantage of using magnetic connection is that when needed, a displacement tool such as a mechanical push rod can be used to push the fixture from the slide to a subsequent process for continuous liquid dispensing operation, and the slide drives the fixture to pass through the manual placement station 2, the tightening station 3, the ampoule cutting station 4 and the like in sequence along the arc track. And the ampoule mouth opening station 5, the ampoule bottle has completed the opening work through the above four stations after being placed in the fixture at the manual placement station. In order to improve the automation level of the equipment, a fixture releasing station 7 is also set in this embodiment, the tightening station is provided with a tightening station fixture loosening device 8, and the fixture releasing station is provided with a fixture releasing station fixture loosening device 11. The structures of the tightening station fixture loosening device and the fixture releasing station fixture loosening device are the same, both of which include a tightening transverse drive servo motor and a tightening servo motor. The output shaft of the tightening servo motor is provided with a torque sensor and a mechanical finger or square head nut matching the square head bolt on the ball screw. The fixture loosening device arranged at the tightening station is used to tighten the fixture to fix the ampoule placed in the fixture, and the fixture loosening device arranged at the fixture releasing station is used to release the empty ampoule bottle after the medicine liquid is extracted.

[0015] like Figure 2 and Figure 3As shown, the clamp in this embodiment includes a clamp base, a slider is arranged on the base, the slider includes a left slider 12 and a right slider 13, the left slider and the right slider can reciprocate toward each other along the slideway arranged on the base, an upper connecting block and a lower connecting block are arranged on the slider, two rollers 18 are arranged between the upper connecting block and the lower connecting block, the left slider and the right slider are mirror-imaged relative to the horizontal axis of the clamp, and an origin positioning proximity switch is arranged on the clamp base; in the present invention, the left slider, the right slider and the two rollers respectively arranged on the left and right sliders constitute a clamping function unit, and the clamping function units on a set of clamps can be single or multiple. When there are multiple clamping function units, the left slider and the right slider on the clamp are provided with multiple upper connecting blocks 17 and lower connecting blocks 16 relative to each other, and the upper connecting blocks and the lower connecting blocks of the right slider and the left slider are respectively connected as a whole. This arrangement allows one clamp to clamp multiple ampoules at the same time. Two ball screws 19 of the same model are arranged on both sides of the left slider and the right slider on the fixture. Threads with opposite spiral directions are arranged at both ends of the ball screw. The ball screw body is connected to the base through a support seat, which is not shown in the figure. Nuts A14 and B15 are screwed on the threads in opposite directions at both ends of the ball screw. Nut A and nut B are fixed on the left slider and the right slider respectively. A square head bolt is fixed at one end of the ball screw, which matches the tightening servo motor mechanical finger or square head nut arranged on the tightening station and the fixture releasing station.

[0016] like Figure 4 As shown, the ampoule cutting station is provided with an ampoule cutting device, which includes a cutting blade 21, a cutting blade rotating motor 36 for driving the cutting blade to rotate, and a cutting head driving device, the cutting head driving device includes a cutting head horizontal driving motor 23 and a cutting head vertical driving motor 24, the cutting head horizontal driving motor and the cutting head vertical driving motor drive the cutting head to reciprocate in the horizontal and vertical directions. In this embodiment, a horizontal pressure spring 22 is provided at the bottom of the cutting head, and a pressure sensor is abutted against the bottom of the pressure spring; the ampoule cutting station is also provided with a roller driving device, the roller driving device includes a telescopic motor 25 and a driving wheel 26 arranged on the output end of the telescopic motor, the horizontal height of the driving wheel is relative to the horizontal height of the roller, the horizontal position of the rotating shaft of the driving wheel is located in the middle of the two rollers, and the driving wheel is driven to rotate by the driving motor 27.

[0017] The ampoule mouth opening station is provided with an opening horizontal drive motor 35, a neck breaking rotation motor 37 and an opening vertical drive motor 28. The bottle mouth clamping device includes a mechanical finger 30 and a clamping servo motor 29. The opening horizontal drive motor and the opening vertical drive motor drive the mechanical finger to reciprocate in the horizontal and vertical directions. The mechanical finger is driven by the clamping servo motor to open and close to clamp the ampoule bottle mouth. The neck breaking rotation motor drives the mechanical finger to rotate to break the ampoule bottle mouth.

[0018] In this embodiment, the ampoule cutting station and the ampoule opening station are arranged as follows: Figure 6 The clamp clamping device shown in the figure includes a clamp arm horizontal drive motor 32 and two clamp arms 33. The two clamp arms are respectively located on both sides of the clamp base. The two clamp arms open and close under the action of the clamp arm drive motor. The clamp arm horizontal drive motor drives the clamp arms to reciprocate in the horizontal direction.

[0019] When the present invention is in use, the clamp is placed on a slide at a manual placement station, and the ampoule bottle is manually placed between the two rollers of the clamp. Then the clamp is rotated to the tightening station with the slide. The tightening lateral drive servo motor of the clamp tightening device drives the tightening servo motor and the square head nut to move toward the clamp. Since the spacing between the clamp and the clamp tightening device is fixed, the initial movement position and displacement of the square head nut can be recorded in the PLC and controlled by the PLC. After the square head nut is combined with the square head bolt, the rotation origin of the ball screw is determined by the following method: the tightening servo motor drives the screw to make the slider move toward the preset origin (at a slightly faster speed). When the origin positioning proximity switch detects the slider, the tightening servo motor is stopped immediately, and then the tightening servo motor is started without changing the direction and moves a little distance, and then moves in the opposite direction at a very slow speed. When the origin positioning proximity switch is released, it stops immediately. At this time, the position of the slider is the origin. After the fixture origin is located, the ampoule model placed in the same fixture each time should be consistent. After placement, the tension servo motor runs under the control of the PLC to clamp the ampoule. When the torque sensor measurement value at the output end of the servo motor reaches the threshold, the PLC controls the tension servo motor to stop. The servo motor records the stroke of the slider and determines the ampoule model in the fixture at this time through the ampoule diameter specifications pre-stored in the PLC. The size specifications of standard ampoules are shown in the table below:

[0020]

[0021] After the clamp is tightened at the tightening station, the clamp moves to the ampoule cutting station. The clamp holding device arranged on the cutting station drives the clamp arm to move horizontally toward the clamp under the control of the PLC, and controls the clamp arm to clamp the clamp; the PLC controls the vertical driving motor of the cutting head to the horizontal position of the bottleneck of the corresponding model of ampoule according to the ampoule model, and the horizontal driving motor of the cutting head drives the cutting head to move toward the ampoule. The horizontal movement distance of the cutting head is controlled by the outer diameter of the ampoule neck of the corresponding model in the PLC and the pressure threshold of the pressure sensor arranged at the bottom of the pressure spring, so that the cutting head abuts against the bottleneck of the ampoule with appropriate force; the telescopic motor on the roller driving device of the ampoule cutting station moves horizontally at the same time to make the driving wheel abut between the two rollers, and the driving wheel is driven by the driving motor 27 to rotate and drive the roller to rotate, and the roller drives the ampoule to rotate while the cutting head rotates to carve a cutting mark on the ampoule neck.

[0022] After the ampoule neck is cut, the clamping arm, drive wheel and cutting head return to their positions, and the fixture moves to the ampoule mouth opening station. The PLC controls the vertical drive motor to start to the height of the ampoule mouth of the corresponding model, and drives the horizontal drive motor to start so that the mechanical fingers are at the ampoule mouth clamping position. After the clamping servo motor clamps the bottleneck above the cutting mark, the neck folding rotation motor rotates to separate the ampoule bottle head from the cutting mark, and then the mechanical fingers relax, and the discarded ampoule head falls into the recycling box below the station. The mechanical fingers return to their positions, and the ampoule opening work is completed.

[0023] The torque sensor in the present invention can adopt a baseless micro-range torque sensor such as the HCNJ-104 torque sensor, and the proximity switch can select a Hall element proximity switch or a slot type photoelectric switch. Currently commonly used PLC controllers such as Siemens S7-1500 or Mitsubishi's Q series PLC can be used in the present invention. The ampoule bottle model is stored in the EPROM storage device of the corresponding PLC control system and the corresponding servo motor and the operation of the circular track are controlled by the PLC according to the ampoule model. The connection with the torque sensor, the input / output panel and the proximity switch is a common application in the prior art and will not be repeated here.

[0024] After describing the implementation mode of the present invention in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention, and the present invention is not limited to the implementation mode of the examples given in the specification.

Claims

1. Automatic ampoule opener, characterized by: The automatic ampoule opener comprises a PLC control system and a track, the PLC control system comprises a PLC controller and an input / output panel, an ampoule manual placement station, a tightening station, an ampoule cutting station and an ampoule mouth opening station are sequentially arranged along the track, a slide seat and a slide seat driving device are arranged on the track, a fixture is detachably connected to the slide seat, the slide seat can drive the fixture to sequentially pass through the manual placement station, the tightening station, the ampoule cutting station and the ampoule mouth opening station along the track under the drive of the slide seat driving device, the fixture comprises a fixture base, a slider is arranged on the base, the slider comprises a left slider and a right slider, the left slider and the right slider can reciprocate toward each other along a slideway arranged on the base, two ball screws of the same model are arranged on both sides of the left slider and the right slider, threads are respectively arranged at both ends of the ball screw, the spiral directions of the threads at both ends of the ball screw are opposite, two nuts are respectively screwed on the threads at both ends of the ball screw which are opposite to each other, and the two nuts are respectively fixed on the left slider and On the right slider, a fastener is fixedly provided at one end of the ball screw; a clamp tensioning device is provided on the tightening station, and the clamp tensioning device includes a tightening transverse driving device and a tensioning power device; a tightening clamping device matching the fastener on the ball screw is provided at the power output end of the tensioning power device; the tightening transverse driving device horizontally drives the tightening clamping device to reciprocate in the horizontal direction toward the clamp; the tensioning power device cooperates with the tightening clamping device and the fastener to control the positive and negative movement of the ball screw The ampoule cutting station is provided with an ampoule cutting device, which includes a cutting head and a cutting head driving device, and the cutting head driving device can drive the cutting head to cut off the ampoule bottle mouth fastened on the clamp; the ampoule mouth opening station is provided with an ampoule bottle opening device, and the ampoule bottle opening device includes a bottle mouth clamping device and a bottle mouth rotating driving device, the bottle mouth clamping device clamps the ampoule bottle mouth, and the bottle mouth rotating driving device drives the bottle mouth clamping device to rotate and break the ampoule bottle mouth; The track is a circular track, and the ampoule manual placement station, the fastening station, the ampoule cutting station and the ampoule mouth opening station are arranged in sequence along the circumference of the circular track; the fastening transverse drive device and the loosening and tightening power device are servo motors, and a torque sensor is arranged at the output end of the servo motor arranged at the loosening and tightening power device. The fastener is a square head screw head or a hexagonal screw head, and the fastening clamping device is a mechanical finger or a nut matched with a square head nut or a hexagonal nut; the cutting head drive device includes a cutting head horizontal drive motor and a cutting head vertical drive motor, and the cutting head is a cutting grinding wheel or a metal cutting blade, and the cutting head horizontal drive motor and the cutting head vertical drive motor drive the cutting head to reciprocate in the horizontal and vertical directions; the ampoule mouth opening station is provided with an opening horizontal drive motor and an opening vertical drive motor, and the bottle mouth clamping device is a mechanical finger, which is driven to open and close by the clamping servo motor, and the opening horizontal drive motor and the opening vertical drive motor drive the mechanical finger to reciprocate in the horizontal and vertical directions; The left slider and the right slider arranged on the clamp each include an upper connecting block and a lower connecting block, two rollers are arranged between the upper connecting block and the lower connecting block, and the left slider and the right slider are arranged in a mirror image relative to the horizontal axis of the clamp; an origin positioning proximity switch is arranged on the clamp base; the ampoule cutting station is provided with a roller driving device, the roller driving device includes a telescopic motor and a driving wheel arranged on the output end of the telescopic motor, the horizontal position of the driving wheel corresponds to the horizontal position of the roller, the horizontal position of the rotating shaft of the driving wheel is located in the middle of the two rollers, and the driving wheel is driven to rotate by the driving motor.

2. The automatic ampoule opener according to claim 1, characterized in that: At least two positioning magnets are respectively arranged on the slide seat and the fixture base, and the positions of the positioning magnets on the fixture base correspond to those of the positioning magnets on the slide seat.

3. The automatic ampoule opener according to claim 1, characterized in that: The ampoule cutting station and the ampoule mouth opening station are provided with a clamp clamping device, which includes a clamping arm horizontal driving motor and two clamping arms. The two clamping arms are respectively located on both sides of the clamp base. The two clamping arms open and close under the action of the clamping arm driving motor. The clamping arm horizontal driving motor drives the clamping arm to reciprocate in the horizontal direction.

4. The automatic ampoule opener according to claim 1, characterized in that: The ampoule cutting station is provided with a purge head, which is connected to a compressed air source, and the outlet direction of the purge head faces the direction of the cutting head.

5. The automatic ampoule opener according to claim 1, characterized in that: A horizontal pressure spring is arranged at the bottom of the cutting head, and a pressure sensor is abutted against the bottom of the pressure spring.

6. The automatic ampoule opener according to claim 1, characterized in that: A plurality of slides are arranged on the track of the automatic ampoule opener; the left slider and the right slider on the fixture are both provided with a plurality of upper connecting blocks and lower connecting blocks corresponding to each other, and the upper connecting blocks and the lower connecting blocks of the right slider and the left slider are respectively connected as one body.

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