Patent Application
20080271414
The present invention relates to a tablet filling device.
Conventionally there exists a tablet filling device which supplies a tablet container, fills the tablet container with tablets, and carries the tablet container to a position where extraction thereof is possible (see, for example, Patent Document 1).
Patent Document 1: JP 11-70901 A
However, the above-mentioned tablet filling device is not endowed with a function of automatically capping the tablet container. When automating the capping of the tablet container, the supply of tablet container, the filling with the tablets, and the attachment of the cap are conducted at different positions. In this case, if, for some reason such as emergency stop, the cap cannot be attached, it is necessary to stop the device as a whole although it is possible to supply the tablet container and to fill the supplied tablet container with tablets. In particular, the tablet container can be of various sizes, and the device size must be rather large to secure the standby position when it is simply endowed with a standby function. This problem occurs at operating positions not only for the cap attachment but also for label affixation and tablet filling.
In view of this, it is an object of the present invention to provide a tablet filling device capable of continuing an operation without stopping the supply of the tablet container, filling with tablets, etc. even when the prescribed operations cannot be performed at the operating positions.
As means for solving the above-mentioned problem, the present invention provides a tablet filling device including: a tablet supply member that fills a tablet container with tablets; a carrying member for carrying the tablet container to the tablet supply member; and a temporary deposit place where the tablet container being filled is to be temporarily deposited when something occurs which disables to effect dispensing while tablets are being supplied to the tablet container from the tablet supply unit.
With this construction, it is possible to allow a tablet container being filled with tablets to wait at the temporary deposit place and to perform the operation of filling the next tablet container with tablets, thus making it possible to continue operation without interrupting it.
Further, as means for solving the above-mentioned problem, the present invention provides a tablet filling device including: a tablet supply member for filling a tablet container with tablets; a carrying member for carrying the tablet container; a container holding member provided halfway through a carrying path for the carrying member and capable of holding the tablet container; a deficiency detecting member which detects occurrence of tablet deficiency while the tablet container is being filled with tablets by the tablet supply member; and a control portion causing the tablet container being filled with tablets to be carried to the container holding member by the carrying member based on a detection signal obtained at the deficiency detecting member.
With this construction, if there occurs a deficiency in tablets with which a tablet container is filled by the tablet supply member, the tablet container concerned can be kept on standby while being held by the container holding member, so it is possible to fill the next tablet container with tablets first, thereby realizing an efficient processing.
The container holding member preferably has a plurality of holding parts respectively capable of holding tablet containers of different outer diameter dimensions.
With this construction, no matter which of various tablet containers differing in outer diameter dimension may be carried by the carrying member, it is possible to hold the carrying member by the corresponding one of the holding portions constituting the container holding member. That is, it is possible to hold various tablet containers differing in outer diameter dimension by a single container holding member, so it is possible to centralize the installation place.
Further, as means for solving the above-mentioned problem, the present invention provides a tablet filling device including: a tablet supply member that fills a tablet container with tablets; a carrying member which carries the tablet container from the tablet supply member to deliver the tablet container to a delivery position; a container holding member provided at the delivery position and having a plurality of holding parts capable of holding the tablet container according to a difference in outer diameter dimension; and another carrying member which carries the tablet container held by the container holding member to an operating position.
With this construction, tablet containers of different outer diameter dimension can all be held by the container holding member arranged at the delivery position, making it possible to centralize to one position the delivery from the tablet supply member to other operating positions.
The container holding member is also arranged at a standby position provided separately from the delivery position. The tablet filling device may further include: a storage portion which stores positional data on each of the positions and historical data on carrying of the tablet container to each position; and a control portion which drive-controls the carrying member based on the positional data and the historical data stored in the storage portion to carry the tablet container from the tablet supply member to the delivery position or the standby position, or from the delivery position or the standby position to the operating position.
With this construction, it is possible to carry tablet containers to the delivery position or the standby position and keep them on standby there, and to carry the tablet containers successively to the operating position based on the data stored in the storage portion.
It is also possible to adopt a construction in which tablet containers of different outer diameters can be held by the holding portion of the container holding member provided at each position.
The holding parts are preferably all capable of holding the tablet container in the same axis.
With this construction, tablet containers of different outer diameter dimensions can all be held in the same axis. As a result, synergistically with the installation place centralizing function, it is possible to simplify the construction of the carrying member and the control program.
It is sufficient that: one of the holding parts of the container holding member is formed of a pair of holding members provided so as to be rotatable about a support shaft arranged parallel to an axis of the tablet container and guides an outer peripheral surface of the tablet container of a maximum outer diameter dimension; the other holding part is formed by a guide frame member provided so as to be rotatable about another support shaft situated in a plane orthogonal to the support shaft and guides an outer peripheral surface of a tablet container of a smaller outer diameter dimension than the tablet container; and the tablet container can also be held by the holding members when guiding the tablet container by the guide frame member.
With this construction, the guide member for holding a tablet container of a large outer diameter dimension can take an auxiliary function when holding a tablet container of a smaller outer diameter dimension by the guide frame body. Thus, even with a simple guide frame body construction which allows guiding of the outer peripheral surface of the tablet container, it is possible to properly hold the tablet container.
According to the present invention, there is provided a temporary deposit place, so it is possible to keep a tablet container on standby at the temporary deposit place and to proceed with filling processing on another tablet container, thereby enhancing the operational efficiency.
In the following, an embodiment of the present invention will be described with reference to the accompanying drawings.
The container supply unit 1 is equipped with a plurality of buckets 8 arranged side by side in the lower portion of the front side of a device main body 7, with each bucket 8 accommodating tablet containers (which, in this example, are vials 9) of different sizes. Each bucket 8 can be opened on the front side of the device main body 7 so that vials 9 can be replenished. The vials 9 accommodated in each bucket 8 are lifted by a well-known lifter, and are conveyed to a first carrying member 34.
The labeling unit 2 serves to affix labels to the outer peripheral surfaces of the vials 9 carried, and may include a well-known one (see, for example, U.S. Pat. No. 5,798,020).
As shown in
As shown in
Each tablet cassette 12 is formed of a cassette main body 14 equipped with a cover member 15 that can be opened and closed.
The cassette main body 14 is composed of a cylindrical rotor accommodating portion 16 and a rectangular barrel-shaped tablet accommodating portion 17 situated thereon. In the tablet accommodating portion 17, the upper surface (conical surface 13a) of the rotor 13 and the side wall form a space capable of accommodating tablets.
As shown in
At the center of the bottom surface of the rotor accommodating portion 16, there is formed a through-hole (not shown), and an intermediate gear 22 is rotatably mounted in the vicinity thereof. The intermediate gear 22 is composed of a first gear 22a and a second gear 22b arranged in the axial direction and integrated with each other.
Further, at the bottom surface of the rotor accommodating portion 16, there is mounted a worm gear 23 in mesh with the second gear 22b of the intermediate gear 22. That is, support walls 17a, 17b protrude at a predetermined interval from the bottom surface of the rotor accommodating portion 16 to rotatably support the worm gear 23. A stopper 24 is provided at one end of the worm gear 23, and a spring 26 is fitted on to a shaft portion 25 protruding therefrom. The spring 26 is situated between the stopper 24 and the support wall 17b, and urges the worm gear 23 toward the support wall 17a situated on the opposite side. As a result, the worm gear 23 is held in position, with its tooth surface held in press contact with the tooth surface of the second gear 22b of the intermediate gear 22. A locking/receiving portion 27 is formed at the forward end of the shaft portion 25. The locking/receiving portion 27 has a cylindrical outer peripheral wall in which a spiral guide groove 28 is formed at two opposing positions. Further, at the terminal end thereof, there is provided a pin holding portion 29 formed through peripheral cutting.
As shown in
The cover member 15 is formed as a rectangular plate, and is equipped with a shaft portion 15a rotatably supported by the bearing portions 32. On the inner side of the shaft portion 25, there is formed a cutout portion 15b in correspondence with the escape recess 31. Owing to the escape recess 31 and the cutout portion 15b, interference with the discharge path for the tablet cassettes 12, arranged upwardly adjacent thereto, is avoided. As a result, it is possible to arrange the tablet cassettes 12 at high density in the vertical direction.
The rotor 13 is of a columnar configuration, and its upper surface is formed as the conical surface 13a protruding toward the center. An axially extending guide groove (not shown) is formed in the outer peripheral surface of the rotor 13, and tablets are accommodated in an aligned state therein, one on the upper side and one on the lower side. The tablets in the guide groove is vertically separated by the brush portion 21a of the partition member 21, and solely the one tablet on the lower side is dropped through the tablet discharge port 19. At the center of the lower surface of the rotor 13, there is integrally provided a rotation shaft, which extends through the through-hole formed in the bottom surface of the rotor accommodating portion 16, with a driven gear 33 being fixed to the protruding portion thereof. The driven gear 33 is in mesh with the first gear 22a of the intermediate gear 22. As a result, when the worm gear 23 is rotated, the driven gear 33 and the rotor 13 are rotated through the intermediate gear 22.
Although not shown in detail, in the capping unit 4, a cap supplied from the cap supply portion through a chute is supported by a support arm, and an upper opening 73 of the vial 9 downwardly carried by a third carrying member 41 described below is closed, the cap being rotated while pressed by the cap attachment portion to thereby effect capping.
The carrying member 5 is formed by first, second, third, and fourth carrying members 34, 37, 41, and 52, respectively.
As shown in
As shown in
In the second carrying member 37, the holding members 38 are lowered with their lower ends brought close to each other by the opening/closing frame member 39; at the point of time when the holding members 38 enter the vial 9, the opening/closing frame member 39 abut the upper portion of the vial 9. As a result, when the holding members 38 further descend, the guide by the opening/closing frame member 39 is canceled, and the holding members 38 are spread due to the urging force of the spring to thereby hold the vial 9. When the holding members 38 ascends while holding the vial 9, the opening/closing frame member 39 abuts the stop portion 40, and the holding members 38 are forcibly placed in the closed state, with the holding state for the vial 9 being canceled.
As shown in
The horizontal movement member 42 is capable of horizontally reciprocating along upper and lower horizontal rails 46.
The ascent/descent member 43 is capable of vertically reciprocating an ascent/descent belt conveyor 47 provided on the horizontal movement member 42 along the horizontal movement member 42 by driving a motor (not shown).
The container holding member 44 is mounted to the ascent/descent member 43, and can hold the vial 9 by means of a pair of holding members 44a adapted to be opened and closed through a roller 44c, a belt 44d, and a ball screw 44e by driving a motor 44b (See
As shown in
Through driving of a motor (not shown), the ascent/descent stand 53 ascends and descends along vertical rails 57 arranged at a predetermined interval. The rotating plate 54 is rotatably provided on the ascent/descent stand 53, and has a gear portion 54a in the outer periphery thereof. The gear portion 54a is in mesh with a drive gear 58a. The drive gear 58a is fixed to the rotation shaft of a rotation motor 58 provided on the ascent/descent stand 53. As a result, when the drive motor 58 is driven, the rotating plate 54 makes normal or reverse rotation through the drive gear 58a and the gear portion 54a. The slide guide 55 is mounted on the rotating plate 54, and has a rack 55a at the upper edge of the side plate portion thereof. The arm member 56 is equipped with a pair of arms 56a, an opening/closing motor 59, and a slide motor 60, and is slidably supported on the slide guide 55. The arm 56a is provided so as to be rotatable about a support shaft 56b, and is capable of holding the vial 9 at the forward end portion thereof. The position at which the vial 9 is held by the arms 56a is substantially in the same axis regardless of a difference in the outer diameter dimension of the vial 9. The opening/closing motor 59 rotates a screw shaft (not shown) through a pulley 59a and a belt 59b to open/close the arms 56a. The slide motor 60 has on the rotation shaft thereof a pinion 60a engaged with the above-mentioned rack, and reciprocates the arm member 56 with respect to the slide guide 55 through normal or verse rotation. The reciprocating range for the arm member 56 is restricted by the control device 63, which drive-controls the slide motor 60 based on detection signals from a sensor (not shown).
As shown in
As shown in
The support plate 66 has, on both side edge portions and the back edge portion thereof, extending portions 69, 70 bent downwardly at right angles. The extending portions 69 on both sides serve to form a space for arranging a spring, etc. described below on the lower side of the support plate 66. The back side extending portion 70 is used for fixation by screws to the device main body 7. The openings 73 are formed on both sides and in the middle of the front side portion of the plate.
The guide arms 67 have, at one end thereof, first fixing portions 74 bent in an orthogonal direction and opposed to each other at a predetermined interval, and second fixing portions 75 extending further from between the first fixing portions 74. The first fixing portions 74 are fixed by screws to pedestal portions 72 rotatably provided on the support plate 66. The second fixing portions 75 are fixed by screws to one ends of rotation members 71 rotatably mounted to the lower surface side of the support plate 66 in correspondence with the guide arms 67, that is, fixed by screws to erect portions 71a protruding on the upper surface side of the support plate 66. The other end portions of the rotation members 71 are connected by a spring 71b and are urged toward each other. As a result, the other end portions of the guide arms 67 are urged toward each other. The guide arms 67 are bent toward each other such that their other end portions abut the outer peripheral surface of the vial 9, forming a guide portion 76 for guiding a large diameter vial 9. Further, the forward end portion of the guide portion 76 gradually expands toward the forward end, forming a guide portion 77 for guiding the vial 9 carried by the third carrying member 41.
The guide frame member 68 is a substantially U-shaped plate-like member, and has a guide member 68a protruding from the middle portion thereof, with its both ends being rotatably supported by a support shaft 68b. The support shaft 68b is supported by protrusions 66a provided at a predetermined interval on the bottom surface of the support plate 66. Due to the urging force of a spring (not shown) provided on the support shaft 68b, the guide frame member 68 is inclined such that the guide member 68a side is situated on the upper side above the support plate 66. With the guide frame member 68 held in contact with the support plate 66, the guide member 68a guides the outer peripheral surface of a first vial 9 of a large outer diameter dimension together with the guide arms 67. The guide arms 67 and the guide frame member 68 form a first holding part. An inner edge portion 78 of the guide frame member 68 is formed in a dimension allowing guiding of a second vial 9 whose diameter is smaller than that of the first vial 9, and forms a second holding part. In both a case where the large diameter vial 9 is held by the first holding part and a case where the small diameter vial 9 is held by the second holding part, the vial 9 is situated in the same axis.
The standby portion 64 is used to temporarily keep on standby the vial 9 carried by the third carrying member 41 before carrying the vial 9 to the capping unit 4 by the fourth carrying member 52. When being already on standby at the delivery position, a vial 9 is kept on standby while held by the container holding member 65 at the standby position.
The control device 63 drive-controls the container supply unit 1, the labeling unit 2, the tablet supply unit 3, the capping unit 4, the carrying member 5, and the extraction unit 6 based on prescription data (what is set forth on the prescription by the doctor, data on the patient, etc.) input from a host computer or the like.
Next, the operation of the tablet filling device, constructed as described above, will be illustrated with reference to the flowcharts of
When prescription data is input from the host computer or the like (Step S1), a suitable vial 9 is selected taking into consideration the size and amount of the corresponding tablets based on the prescription data (Step S2). Then, the selected vial 9 is carried from the bucket 8 (Step S3). That is, the lifter is driven to carry the vial 9 to the first carrying member 34.
In the first carrying member 34, the vial 9 placed in a horizontal position on the round belts 34b by the lifter is carried toward the extraction unit 6 (Step S4). Then, the container support portion 36 is slid and kept ready so that the carried vial 9 can be received (Step S5). As a result, the vial 9 is supported in a vertical position at the container support portion 36 so as to be open on the upper side. Subsequently, the container support portion 36 is slid, and a label with a predetermined print is affixed to the outer peripheral surface of the vial 9 by the labeling unit 2 (Step S6). Further, the second carrying member 37 is driven, and the vial 9 is raised while held by the holding members 38 (Step S7).
Here, the third carrying member 41 is driven, and the vial 9 raised by the second carrying member 37 is held (Step S8). At this time, in the second carrying member 37, the holding members 38 are moved upwards, and the holding state for the vial 9 is canceled by forcibly bringing the lower ends of the holding members 38 close to each other by the guide frame member 68 (Step S9). The third carrying member 41 transfers the held vial 9 to the tablet feeder 11 containing the corresponding medicine based on the prescription data (Step S10). Then, the vial 9 is placed at a position where it is possible to collect tablets dropping from the tablet discharge port 19 of the tablet feeder 11 (Step S11).
Subsequently, the advancing/retreating motor 49 is driven to cause a horizontal slider 45 to advance (Step S12). As a result, the rod 45d advances to open the cover 10b, and the protrusion 45c is engaged with the engagement portion 16a. At this time, the rod 50 also advances, and the lock pins 51 thereof are locked to the locking/receiving portion 27 formed on the worm gear 23 of the tablet feeder 11. The guide groove 28 is formed in a spiral configuration, so the lock pins 51 smoothly enter the guide groove 28, and undergoes positioning at the locking/receiving portion 27. Here, the rod 50 is rotated, and the rotor 13 is rotated via the worm gear 23, the intermediate gear 22, and the driven gear 33 (Step S13). As a result, the tablet situated on the lower side, which is separated in the groove of the rotor 13 by the brush portion 21a of the partition member 21, drops through the tablet discharge port 19. The dropping tablet is detected by the count sensor 48 (Step S14), and, based on the detection signal, a determination is made as to whether the vial 9 has been filled with a predetermined number of tablets or not (Step S17). However, when no detection signal is output from the count sensor 48 although the filling is halfway through (Step S15), it is determined that there is no more tablet in the tablet cassette 12 (deficiency), and the vial is temporarily carried to the standby position (Step S16). Then, the procedure returns to Step S1, and the above-mentioned processing is continued on the next vial 9. As a result, even when tablet deficiency occurs halfway through the tablet filling operation, it is possible to continue filling operation on the next vial 9, and there is no fear of the operation being suspended. Thus, it is possible to perform an efficient processing.
It may occur, during the operation of filling the vial 9 with tablets from the tablet feeder 11, that the rotation of the rotor 13 stops due to clogging with a tablet, etc. In this case, a force is applied to the tablet as a result, for example, of being caught between the inner edge of the tablet discharge port 19 and the groove of the rotor 13. It should be noted, however, that the worm gear 23 is axially slidable while urged by the spring 26. Thus, the worm gear 23 moves before the tablet has suffered damage, mitigating the force applied to the tablet. Further, at this time, an excess current flows through the motor, and the stopping of the rotation of the rotor 13 is detected. Thus, based on this detection signal (Step S18), the horizontal slider 45 is moved to cause the rod 50 to retreat, whereby the worm gear 23 is moved against the urging force of the spring 26 (Step S19). As a result, the driven gear 33 and the rotor 13 make reverse rotation via the intermediate gear 22 according to the displacement of the worm gear 23, thereby eliminating the clogging with the tablet. Thus, it is possible to cause the rotor 13 to make normal rotation, and to resume the supply of tablets. However, in a case where the stop state is maintained even when the rotor 13 is caused to make reverse rotation through movement of the worm gear 23 (Step S20), an error is reported to stop the motor (Step S21). When the stop state of the rotor 13 is maintained, the reverse rotation of the rotor 13 through movement of the worm gear 23 may be repeated a plurality of times.
At the delivery position, it is confirmed that no vial 9 is on standby (Step S22). When no vial 9 is on standby at the delivery position, the present vial 9 is carried to the container holding member 65 of the delivery position (Step S23). At the container holding member 65 of the delivery position, the vial 9 is brought in from the forward end side of the guide arm 67 (the direction of the arrow in
When the preceding vial 9 is already on standby at the delivery position, a vacant container holding member 65 is searched for from among the standby positions (Step S24), and the vial 9 is carried to the vacant container holding member 65 determined to be vacant (Step S25). In this case, coordinate data on the standby position is stored in the storage portion of the control device 63, so the size of the vial 9 conveyed and the kind of tablets to be accommodated in the vial 9 are stored in relation to the coordinate data (Step S26). As a result, when the capping at the capping unit 4 is enabled, it is possible to carry the corresponding vial 9 to the capping unit 4 by the third carrying member 41 based on the stored data.
When the vial 9 is thus carried to the delivery position or the standby position, the fourth carrying member 52 is driven, and the vial 9 is carried to the capping unit 4 while held by the arms 56a (Step S27). A cap is supplied via a chute (Step S28), and this cap is situated so as to cover the upper opening 73 of the vial 9 carried (Step S29). Then, the cap attachment portion is driven to cap the vial 9 (Step S30). When the capping is completed (Step S31), the vial 9 held by the arms 56a is carried by the fourth carrying member 52 to an extraction port 61 (Step S32). At the extraction port 61, information on the vial 9 carried (e.g., the name of the tablets accommodated therein) is indicated on the display 62 (Step S33). Accordingly, the operator can understand at a glance the prescription data on the tablets accommodated in the vial 9 extracted.
In the container holding member 65 at each position, the size of the vial 9 that can be held may differ. In this case, the positions, such as the delivery position and standby positions, and the sizes of the vials 9 that can be held by the standby portions 64 at those positions are stored in the storage portion of the control device 63. The combination of vials that can be guided by the first holding part and the second holding part can be arbitrarily set.
Further, the container holding member 6S at each position may be provided with a sensor for detecting a vial 9. For example, when the vial 9 held by the container holding member 65 is toppled, and the tablets accommodated are scattered, it is possible to stop the operation of the device, and report an error.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2005-039197 | Feb 2005 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2006/002152 | 2/8/2006 | WO | 00 | 8/14/2007 |
