JP4468498B2 - Method for adjusting powder splitting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a powder splitting device for splitting and packing powder every prescription in a hospital or pharmacy.Adjustment methodIt is about.
[0002]
[Prior art]
  Conventionally, as a powder splitting device for dividing and packing powder evenly, the powder is supplied uniformly to the rounded arc-shaped groove formed on the outer peripheral upper surface of the distribution dish with a feeder. What is scraped and packaged one by one by a scraping device is known.
[0003]
  In this type of powder splitting device, the feeder is brought close to the distribution tray, and the powder is uniformly supplied to the rounded groove while rotating the distribution tray. Then, while the distribution tray is divided and fed in the circumferential direction at a pitch equivalent to the number of divisions, the powder for one package is scraped by the scraping device and then divided and packaged by scraping in the radial direction. .
[0004]
[Problems to be solved by the invention]
  However, in the powder splitting device, an error occurs in the amount of powder to be split for each of the following reasons, not only in the model but also in the same model (hereinafter, this error is referred to as a machine difference).
[0005]
  For example, it is inevitable that processing accuracy errors occur in the thickness and scraping width of the silicon rubber provided on the scraper of the scraping device, and this error directly appears as a machine difference.
[0006]
  In addition, the division feeding of the scraping device is performed by controlling the voltage applied to the pulse motor for feeding the scraping device in a divided manner. Arise.
[0007]
  In addition, the powder supplied to the rounded groove may be deviated from the reference position toward the inner peripheral side or the outer peripheral side due to reasons such as shifting of the feeder stop position with respect to the distribution tray. In this case, simply scraping with a scraping device causes a machine difference based on differences in powder deposition diameter, cross section, width, and the like. That is, in the scraping device, the powder supplied in a circumferential shape into the rounded grooves of the distribution tray is scraped by the scraping plates arranged in parallel, and therefore, as shown in FIG. In the case of a bundle, an extra portion of ΔS is scraped off, whereas in the final package, it is reduced by an amount of ΔS already scraped.
[0008]
  Therefore, the present invention provides a powder splitting device that can accurately split powder even when a distribution tray is used.Adjustment methodIt is an issue to provide.
[0009]
[Means for Solving the Problems]
  As a means for solving the above problems, the present invention provides:
  Powder supplied to the round groove with a circular arc cross section formed on the outer peripheral upper surface of the distribution tray,After partitioning with the partition plate of the scraping device, from the divided feed start position rotated by a predetermined amount according to the number of division in the divided feed direction or the direction opposite to the divided feed direction,A powder splitting device that divides and feeds a distribution tray in a circumferential direction along the rounded groove by a predetermined pitch, and evenly scrapes and packs it with a scraping device.Adjustment methodIn
  The initial packaging error with respect to the target amount of the initial powder dose of the standard powder supplied to the distribution tray is within the set range.On the plus sideIf it is off, the split feed start position for the initial package by the scraping device isWhile moving by a predetermined pitch in the direction opposite to the divided feed direction, if it is off to the minus side, the divided feed start position is adjusted by moving by a predetermined pitch in the divided feed direction,
When the initial packaging error is within the set range, and the final packaging error with respect to the target amount of the final powder dose of the reference powder supplied to the distribution dish is out of the setting range to the plus side, each by the scraping device While the movement pitch of the divided feed is increased by a predetermined dimension, if it is off to the minus side, it is adjusted by decreasing the movement pitch by a predetermined dimension.Is.
[0010]
  The difference between the amount of the first powder and the final powder supplied to the distribution tray is from the second setting range.On the plus sideIf it is off, the split feed start position for the initial package by the scraping device isWhile moving by a predetermined pitch in the direction opposite to the divided feed direction, if it is off to the minus side, adjust by moving it by a predetermined pitch in the divided feed directionIs preferred.
[0011]
  The error with respect to the target amount of the initial powder dose of the second standard powder that is different in fluidity from the standard powder is from the third setting range.On the plus sideIf it is off, the split feed start position for the initial package by the scraping device isWhile moving by a predetermined pitch in the direction opposite to the divided feed direction, if it is off to the minus side, adjust by moving it by a predetermined pitch in the divided feed directionIs preferred.
[0012]
  An error with respect to the target amount of the final powder dose of the second reference powder is a second setting.Out of range to the plus sideIfWhile the movement pitch of each divided feed by the scraping device is increased by a predetermined dimension, when it is deviated to the minus side, the movement pitch is adjusted by decreasing by a predetermined dimension.Is preferred.
[0013]
  The difference in the amount of powder between the first package and the final package of the second standard powder is from the fourth setting range.On the plus sideIf it is off, the split feed start position for the initial package by the scraping device isWhile moving by a predetermined pitch in the direction opposite to the divided feed direction, if it is off to the minus side, adjust by moving it by a predetermined pitch in the divided feed directionIs preferred.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0015]
  FIG. 1 shows a powder dividing apparatus according to this embodiment. The apparatus includes a distribution tray 1, a coronal ridge 2, a distribution hopper 3, a scraping device 4, a packaging hopper 5, and a control device 6.
[0016]
  The distribution tray 1 is a disk having a round groove 7 having an arc-shaped cross section along the outer periphery, and can be rotated forward and backward around a rotation axis by a driving device (pulse motor). The scraping angle α (see FIG. 8) of the round groove 7 of the distribution tray 1 is preferably 24 ± 5 °. When the scraping angle α is 45 °, if the scraping device 4 scrapes the powder, the scraping device 4 scoops upward, delays reaching the dispensing hopper 3, or scatters over the hopper. is there. Conversely, if the scraping angle α is reduced to about 10 °, when the powder is supplied from the coronal ridge 2 to the distribution tray 1, the powder does not accumulate in the round groove 7 and may fall to the outer peripheral portion. . The preferable scraping angle α is easily set when the diameter of the partition plate 14 of the scraping device 4 described later is large. This is because if the diameter of the partition plate 14 is small, the depth of the round groove 7 becomes too shallow. For this reason, the diameter of the partition plate 14 is preferably 110 mm even in consideration of the balance of the entire apparatus.
[0017]
  The coronal ridge 2 is composed of a circular base 8 and a ring 9. The outer periphery of the base 8 forms a conical surface, and a V-shaped groove 10 is formed together with the inner peripheral surface of the ring 9 as shown in FIG. As shown in FIG. 1, the base 8 can rotate about the rotation axis z <b> 2 and can turn about the turning axis z <b> 3 which is eccentric from the rotation axis z <b> 1 of the distribution tray 1. . The ring 9 rotates integrally with the base 8 and turns, and is lifted and lowered by the lifting device 24 via the ring opening / closing arm 11, and the bottom of the V-shaped groove 10 is lowered as shown in FIG. It can be opened and closed.
[0018]
  The distribution hopper 3 is provided with a chute 12 for charging the powder supplied inside into the V-shaped groove 10 of the coronal heel 2. In addition, the chute 12 is provided with a piezoelectric element 13 for applying a vibration to apply powder to the chute 12 and supplying the powder to the V-shaped groove 10.
[0019]
  The scraping device 4 includes a partition plate 14, a guide plate 15, and a scraper plate 16. The partition plate 14 has a circular shape having the same radius of curvature as the round groove 7 of the distribution tray 1 and is provided so as to be rotatable about the rotation axis x. The guide plate 15 has a fan shape having the same radius of curvature as the partition plate 14, and is parallel to the partition plate 14 at a position separated from the partition plate 14 by a predetermined scraping width W on the rotation axis x of the partition plate 14. It is attached. The scraper plate 16 is attached between the partition plate 14 and the guide plate 15 so as to be perpendicular to them. The scraping device 4 can move up and down between a lowered position where the partition plate 14 contacts the round groove 7 and a raised position away from the round groove 7.
[0020]
  The packaging hopper 5 is provided on the side opposite to the distribution hopper 3 with respect to the distribution tray 1, and guides the powder scraped out by the scraping device 4 to a packaging device (not shown).
[0021]
  As shown in FIG. 2, the control device 6 is based on the input device 21 such as the keyboard 17, the mouse 18, the balance adjustment key 19, the increase / decrease adjustment key 20, and the input information (such as prescription data) from the host computer 22. Drive control of the drive device 23 of the distribution tray 1, the raising / lowering device 24 of a coronal ridge, etc. is controlled.
[0022]
  The balance adjustment key 19 and the increase / decrease adjustment key 20 are used to reduce machine differences in final adjustment before shipment. The balance adjustment key 19 is used to adjust the division feed start position. Here, as will be described later, the divided feed start position is a position where the powder stored in the round groove 7 of the distribution tray 1 is partitioned by the partition plate 14 of the scraping device 4 in order to make the scraping amount the same. It refers to the position of moving forward (referring to rotating the divided dish 1 in the divided feed direction R) or moving backward (referred to rotating the divided dish 1 in the direction R ′ opposite to the divided feed direction R). The increase / decrease adjustment key 20 adjusts the movement pitch of the scraping device 4 in other scrapings other than the final packet, as will be described later, when the error of the final powdered drug amount with respect to the target amount is large. It is used to suppress the error of powder dose with the sachet.
[0023]
  Next, the operation of the powder splitting device having the above configuration will be described.
[0024]
  First, powder is put into the distribution hopper 3 and the powder falling from the chute 12 of the distribution hopper 3 is uniformly accommodated in the V-shaped groove 10 while rotating the coronal heel 2 positioned at the receiving position. Then, the coronal ridge 2 is moved eccentrically from the receiving position to the dispensing position, where the ring 9 is raised to open the bottom of the V-shaped groove 10, and the powder is distributed and deposited in the round groove 7 of the dispensing dish 1 at a time. After that, the coronal heel 2 is moved eccentrically back to the receiving position. In this state, the scraping device 4 is lowered to bring the partition plate 14 into contact with the round groove 7, and the partition plate 14 is rotated to scrape out the powder by the scraper 16, and the packaging not shown through the packaging hopper 5. Guide to equipment and package.
[0025]
  By the way, the maximum division number No of the distribution tray 1 is determined by the scraping width 16 and the diameter of the round groove 7 of the distribution tray 1 (in the present embodiment, for the sake of convenience, the round groove 7 is sprinkled into the round groove 7 for the sake of convenience. The radius of the outer periphery of the powdered powder is taken to be determined by the following equation.
[0026]
[Expression 1]
              No = 2πr2 / W
[0027]
  Moreover, the division number N of the powder sprinkled on the distribution dish 1 is set by prescription.
[0028]
  Hereinafter, when the same division number N as the maximum division number No is set, each division operation (balance adjustment) when the division number N larger or smaller than the maximum division number No is set is shown in the flowchart of FIG. It explains according to.
[0029]
  When the same division number N as the maximum division number No is set (in the case of YES in step S101), at the first division (step S102) where the division number n is 1, as shown in FIG. Powder is cut at the position a0b0 by the partition plate 14, and in this state, the distribution tray 1 is moved in the direction R 'opposite to the divided feed direction R by an angle Δθ corresponding to the area ΔS of the portion that is excessively scraped out within the pitch corresponding to the number of divisions. Reverse rotation is performed (step S103). The position of the partition plate 14 at this time becomes the divided feed start position. As a result, as shown in FIG. 4B, the amount of powder corresponding to ΔS is scraped to the last part to be divided. Then, scraping is performed in this state, and from then on, the powdered medicine is scraped and divided while the distribution tray 1 is normally rotated in the division feeding direction at a division number equivalent pitch P (= W) (step S104).
[0030]
  The angle Δθ is an angle corresponding to ΔS described with reference to FIG. 3A, and is obtained as follows. That is, as shown in FIG. 11, the center O of the distribution tray 1 is connected to the points a1, a2, and a2 ', the angles a1Oa2 and a1aa2' are respectively θ and θ ', and a straight line a2 from the center O of the distribution tray 1 is obtained. When the length of the perpendicular to the extension line of 'b2 is H, the following equation is established.
[0031]
[Expression 2]
              θ = 2π / No = W / r2
[0032]
[Equation 3]
              H = r2sin θ = rlsin θ ′ = W
[0033]
[Expression 4]
              ΔS = (1/2) r2cosθ · r2sinθ
                      − (1/2) rlcos θ ′ · rlsin θ ′
                      -Πrl²(Θ′−θ) / 2π
                  = (W / 2) (r2cosθ-rlcosθ ′)
                      -(1/2) rl²(Θ'-θ)
[0034]
[Equation 5]
              S = (1/2) (r2²-Rl²) Θ
[0035]
[Formula 6]
              Δθ = [2 / (r2²-Rl²)] ΔS
[0036]
  Here, S is an area surrounded by a1a2b2b1, and ΔS is an area surrounded by a2a2′b2. Since θ is obtained from (Equation 2) and θ ′ is obtained from (Equation 3), ΔS is obtained by substituting these into (Equation 4). Next, by substituting this ΔS into (Equation 6), Δθ is obtained.
[0037]
  As a result, as shown in FIG. 4B, the area a1a2'b2b1 that is divided first is the area a1a0b0b1, which is blanked by being pushed to the final part, of the area ΔS of the excessively scraped part a2a2'b2. Since it is the same as the portion, it is equal to the theoretical division area a1a2b2b1. Further, as shown in FIG. 4C, the area a2a3'b3b2 to be divided secondly has the same excessively scraped portions a2a2'b2 and a3a3'b3 which are scraped out first. It is equal to the area a2a3b3b2. The same applies to the third and subsequent times. Further, as shown in FIG. 4 (D), the portion a63a1'b1b63 that is divided last is replenished with the portion that was scraped off excessively the portion a63a63'b63 that was scraped second from the end. Also, since the portion a1a1'b1 has already been scraped out first, it is equal to the theoretical division area a63a1b1b63. Accordingly, the scraping amount is equal not only in the first and last but also in all the divided areas.
[0038]
  When the division number N exceeding the maximum division number No is set (in the case of YES in step S5), for example, when the division number is set with respect to the maximum division number, at the first division of n = (step In S106), as shown in FIG. 5A, the powdered medicine is cut at the position a0b0 by the partition plate 14, and in this state, the distribution tray 1 is reversely rotated by the predetermined angle Δθ + ΔP in the direction R ′ opposite to the divided feeding direction R. (Step S107). The position of the partition plate 14 at this time becomes the divided feed start position. The angle Δθ is an angle corresponding to ΔS described with reference to FIG. 3A, and ΔP is obtained by the above formula. As a result, as shown in FIG. 3B, the amount of powder corresponding to Δθ + ΔP is scraped to the last part to be divided. Then, scraping is performed in this state, and from then on, the powder is scraped and divided while the distribution tray 1 is normally rotated in the division feed direction at a division number equivalent pitch P (= W) (step S108).
[0039]
  Thus, as shown in FIG. 5B, the area ΔS + ΔS ′ of the excessively scraped portion a2a2′b2′b2 of the region divided first corresponds to a blank portion of Δθ + ΔP. Further, as shown in FIG. 5C, the area ΔS + ΔS ′ of the excessively scratched portion a2a3′b3′b2 of the second divided region is the area ΔS + ΔS ′ of the excessively scratched portion of the first divided region. Is the same. Further, in the region divided last, as shown in FIG. 5D, the portion scraped first corresponds to the area ΔS + ΔS ′ of the excessively scraped portion of the region divided second from the last. Therefore, the scraping amount in all the divided areas is the same.
[0040]
  When the division number N smaller than the maximum division number No is set (NO in step S5), for example, when the division number is set with respect to the maximum division number, as shown in FIG. Since the division number equivalent pitch P (= 2πr 2/60) is larger than the scraping width W, the powder is cut at the position of a 1 b 2 by the partition plate 14 at the time of the first division of n = (step S109), and a predetermined angle (P -W) The distribution tray 1 is rotated forward in the divided feed direction by -Δθ (step S110). The position of the partition plate 14 at this time becomes the divided feed start position. And after scraping a powder to some extent with the partition plate 14, it scrapes out at once. In addition, when the number of divisions is 30 or less, such as 30, the number of divisions is scraped a plurality of times per division.
[0041]
  When the number of divisions is small as described above, the feed pitch of the region divided first is reduced by Δθ from the division number equivalent pitch P as shown in FIG. As shown in FIG. 6C, the feed pitch of the second and subsequent divided areas is set to the division number equivalent pitch P (step S112), and the feed pitch of the last divided area is shown in FIG. 6D. As shown in FIG. 6, the number P is increased by Δθ from the division number equivalent pitch P (step S113). The angle Δθ is an angle corresponding to ΔS described with reference to FIG.
[0042]
  Thereby, as shown in FIG. 6B, the area ΔS of the excessively scraped portion of the region divided first corresponds to the portion of the reduced feed pitch Δθ. Further, as shown in FIG. 6B, the area ΔS of the excessively scraped portion of the second divided region is the same as the area ΔS of the excessively scratched portion of the first divided region. Further, in the area divided last, as shown in FIG. 6C, the area ΔS of the excessively scraped portion of the area already divided second from the end is changed to the increased feed pitch Δθ. Equivalent to. Therefore, the scraping amount in all the divided areas is the same.
[0043]
  As described above, by making the scraping width W by the scraper 16 of the scraping device 4 constant and changing the feed amount of the distribution tray 1 variously, when the division number is larger than the maximum division number No for the scraping width W, The division can be performed either in the same case or in a small case.
[0044]
  In the said powder splitting device, the deposit shape of the powder deposited on the round groove 7 of the distribution tray 1 differs depending on the type of powder. This is because the frictional contact resistance between particles varies depending on the type of powder, which affects the fluidity. For example, a fine powder (powder) having poor fluidity is accumulated and accumulated on the inner peripheral side as shown in FIG. 7 (A), and the powder is slightly higher on the inner peripheral side as shown in FIG. 7 (B). As shown in FIG. 7 (C), the granules are accumulated in a mountain state. In any case, since a mountain occurs on the inner circumference side, the amount of the ΔS portion changes depending on the type of powder. For this reason, when the number of divisions N is equal to or greater than the maximum number of divisions N0, the angle Δθ for reversing the distribution tray 2 when the powder corresponding to ΔS is finally squeezed and distributed to the area by the partition plate 14 is set. If constant, an error occurs in the first and last division amounts.
[0045]
  Therefore, the reverse rotation angle Δθ of the distribution tray 1 is changed according to the type of powder. Specifically, a key input device is provided for inputting whether the powder to be fed into the dispensing hopper 3 corresponds to a fine powder, powder, granule or particle, and the input powder type is a fine powder having poor fluidity. In the case of powder or powder, the value of ΔS is corrected to be larger, and in the case of particles, the value of ΔS is corrected to be smaller.
[0046]
  Further, when the distribution tray 2 is reversed, as shown in FIG. 9, the mountain on the inner peripheral side of the powder is scraped and passes through the last area “63” and flows into the second area “62” from the last. There is a fear. In order to prevent this, the distribution tray 2 is reversed, and the partition plate 14 is rotated from the inner peripheral side to the outer peripheral side of the powdered medicine as shown in FIG. As a result, the mountain on the inner peripheral side of the powdered medicine collapses to the outer peripheral side, so that the avalanche into the second area “62” from the end is eliminated.
[0047]
  However, even with such treatment, if the powder is good fluidity like particles and the amount of distribution to the last area is large, the inundation to the second area from the end is inevitable and the division is not possible. May be large. In such a case, the feeding pitch P of the distribution tray 1 in the second division operation from the last is sent to a smaller number than the feeding pitch P up to the previous stage, and the division error is reduced.
[0048]
  By the way, in the powder splitting device, a final check is made as to whether or not accurate packaging can be performed before shipment, and adjustment is performed as follows according to the flowcharts of FIGS.
[0049]
  First, the balance adjustment key 19 and the increase / decrease adjustment key 20 are operated to set the median of the range adjustable by each key (steps S201 and S202). Then, the reference powder A is supplied by a reference amount to the rounded groove 7 of the distribution tray 1, and is scraped and packaged by the scraping device 4 (step S203). This packaging was performed for all powders contained in the round groove 7, and the amount of powder in each package was measured. As the standard powder A, for example, magnesium oxide is used which has good fluidity and is difficult to adhere. As a result of packaging, as described in the section of the prior art, as shown in FIG. 15 (A), variation in the amount of powder was observed between the initial package and the final package.
[0050]
  Subsequently, an error (initial packaging error) X with respect to the target amount of the packed initial dosage is determined (step S204). If the error X is out of the range (set range) of ± 3% relative to the target amount, an error (final packet error) Y with respect to the target amount of the powder amount of the packaged final package is determined (step S205). If the error Y is ± 3% or less with respect to the target amount, it is determined whether or not the difference Z in the powder amount between the initial package and the final package is ± 5% or less (step S206).
[0051]
  If the initial packet error X exceeds ± 3%, balance adjustment is performed (step S207). Thereby, it is determined how much the scraping device 4 is advanced or retracted from the reference position. Specifically, when the initial packaging error X is + 3% <X ≦ + 12%, the balance adjustment value is set to “−1”, and the distribution tray 1 is rotated backward by a predetermined pitch from the reference position, whereby the scraping device 4 scrapes. Reduce the amount of sticking out. In this embodiment, every time the balance adjustment value is increased or decreased by 1, the number of pulses of the voltage applied to the driving device 23 is increased or decreased by a predetermined value. When the initial packet error X is + 12% <X ≦ + 20%, “−2 (retraction amount 2)” is set, and when + 20% <X, “−3 (retraction amount 3)” is set, and the advance of the scraping device 4 to be set Increase the amount. Conversely, when the initial package error X is −12% ≦ X <−3%, “+1 (advance amount 1)”, and when −20% ≦ X <−12%, “+2 (advance amount 2)”, X When <-20%, “+3 (advance amount 3)” is set. Thereafter, packaging with the reference powder A is performed again (step S203), and it is determined whether or not the above conditions are satisfied (steps S204 to S206). When the conditions were satisfied, as shown in FIG. 15 (B), the variation in the amount of powder in the initial package decreased.
[0052]
  Further, if the error (final package error) Y with respect to the target amount of the powder amount of the final package exceeds 3% (setting range), an increase / decrease adjustment is performed (step S208). Specifically, when the final packaging error Y is + 3% <Y ≦ + 12%, “−1 (retraction amount 1)” is set, and the rotation pitch (divided feed dimension) of the distribution tray 1 at each scraping is increased by a predetermined dimension. Let For example, the increment of the divided feed is obtained by dividing the final package error Y by the number of packages. In this case, the size of each divided feed is not increased uniformly by a fixed amount, but may be increased at every predetermined divided feed (for example, the first and second packages are divided and fed directly as the third package). Increase the split feed size.) When + 12% <Y ≦ + 20%, “−2 (retraction amount 2)” and when + 20% <Y, “−3 (retraction amount 3)”, the rotation pitch of the distribution tray 1 set for each scraping. Increase Conversely, when the final package error Y is −12% ≦ Y <−3%, “+1 (advance amount 1)”, and when −20% ≦ Y <−12%, “+2 (advance amount 2)”, Y When <-20%, “+3 (advance amount 3)” is set. Thereafter, packaging with the reference powder A is performed again (step S203), and it is determined whether or not the above conditions are satisfied (steps S204 to S206). When the conditions were satisfied, as shown in FIG. 15 (C), the dispersion of the powder amount in the final package decreased.
[0053]
  Further, if the difference (absolute value) Z in the powder amount between the initial package and the final package is out of ± 5% (second setting range), it is determined which is greater (step S209). If there are many initial packages, the balance adjustment key 19 is operated to adjust the set value to one smaller value (step S210), and if there are many final packages, it is adjusted to one larger value (step S211). Then, a reference amount of the reference powder A is again supplied to the distribution tray (step S203), and the packaging is again performed in the same manner as described above.
[0054]
  If the above condition is satisfied for the reference powder A in this way, then the division setting process is performed for the reference powder B (second reference powder). As the standard powder B, a powder that has poor fluidity and easily scatters, such as SM powder, is used.
[0055]
  In the division setting process for the reference powder B, as in the case of the reference powder A, the reference powder B is supplied to the round groove 7 of the distribution tray 1 by a reference amount, and is scraped and packaged by the scraping device 4 (step S212). Then, an error X ′ with respect to the prescription target amount of the powder amount of the packaged initial package is determined (step S213). If this error X 'is ± 5% or less with respect to the target amount, an error Y' with respect to the target amount of the final amount of packed powder is determined (step S214). If the error Y 'is ± 5% or less with respect to the target amount, it is determined whether or not the difference Z' between the powder amount of the initial package and the final package is ± 8% or less (step S215).
[0056]
  If the error X ′ with respect to the target amount of the initial powder dose exceeds 5% (second setting range), the balance adjustment key 19 is operated. That is, the initial package is compared with the final package (step S217). If there are many initial packages, the balance adjustment key 19 is operated to adjust the set value to one smaller value (step S218). For example, the value is adjusted to one larger value (step S219).
[0057]
  However, the operation of the balance adjustment key 19 determines whether or not the packaging with the reference powder A is not hindered (step S216), and is not performed if the hindrance appears. That is, when the initial powder dose has been changed by operating the balance adjustment key 19 in the packaging of the standard powder A, the amount of change is large, and the target amount of the initial powder dose of the standard powder A in this adjustment is large. If it is clear that the error with respect to is out of the range of ± 3%, the balance adjustment key 19 is not adjusted.
[0058]
  If the final package error Y 'with respect to the target amount of the final powder dose exceeds 5%, the increase / decrease adjustment key 20 is operated. That is, it is determined whether or not the final packet error Y ′ is positive (step S221). If the final packet error Y ′ is positive, the increase / decrease adjustment key 20 is operated to adjust the set value to one larger value (step S222). If the error Y ′ is a negative value, the set value is adjusted to one smaller value (step S223). However, the operation of the increase / decrease adjustment key 20 is also performed only when there is no problem in determining whether or not there is any problem in the amount of packaging with the reference powder A as described above (step S220).
[0059]
  If the difference Z ′ in the powder amount between the initial package and the final package is outside the range of ± 8% (fourth setting range), the balance adjustment key 19 is operated. That is, the initial package is compared with the final package (step S225). If there are many initial packages, the balance adjustment key 19 is operated to adjust the set value to one smaller value (step S226), and there are many final packages. For example, the value is adjusted to one larger value (step S227). However, the operation of the balance adjustment key 19 is the same as that described above in the case where there is a problem with the variation in the amount of the initial encapsulated drug (step S224).
[0060]
  If the above conditions are satisfied for the standard powder B in this manner, the standard powders A and B are finally packaged (step S228), and whether or not the error of the powder amount between each package is within 10%. Is determined (step S229). If this error is not within 10%, after adjusting each component, the above processing (steps S201 to S229) is repeated again.
[0061]
  In the above-described embodiment, the adjustment by the balance adjustment key 19 and the increase / decrease adjustment key 20 is performed based on the operator's judgment, but errors X, Y (X ′, Y ′) or the difference Z (Z ′) in the amount of powder between the initial package and the final package may be automatically performed.
[0062]
【The invention's effect】
  As is clear from the above description, according to the powder splitting device according to the present invention, the divided feed of the initial package by the scraping device based on the error of the initial powder dose of the reference powder supplied to the distribution tray with respect to the target amount. Since the starting position can be determined, it is possible to suppress the machine difference and obtain an equal packaging amount.
[0063]
  In particular, the movement pitch of each package by the scraping device is adjusted based on the error of the final powder amount with respect to the target amount, or the initial packet is divided by the scraping device based on the difference between the powder amount of the initial packet and the final packet. Since the feed start position can be adjusted, it is possible to further reduce the machine difference and obtain an equal package amount.
[Brief description of the drawings]
FIG. 1 is a perspective view of a powder dividing apparatus according to the present embodiment.
FIG. 2 is a block diagram of the powder splitting device of FIG. 1;
FIG. 3 is a diagram for explaining an area of powder that is scraped in each divided region;
FIG. 4 is a diagram for explaining the area of powder to be scraped out in each divided region when the same number of divisions as the maximum number of divisions is set.
FIG. 5 is a diagram for explaining the area of powder to be scraped out in each divided region when the number of divisions exceeding the maximum number of divisions is set.
FIG. 6 is a diagram for explaining the area of powder to be scraped out in each divided region when a division number smaller than the maximum division number is set.
FIG. 7 is a cross-sectional view showing the deposition shape for each type of powder deposited on the distribution dish from the coronal fold.
FIG. 8 is a cross-sectional view showing a state in which a pile of powder is broken by a rotating partition plate.
FIG. 9 is a cross-sectional view showing a state in which powder is dripping from the last to the second divided region by reverse rotation of the divided dish.
FIG. 10 is a flowchart showing a dividing plate feeding operation.
FIG. 11 is a plan view showing the dimensional relationship of the divided dishes.
FIG. 12 is a flowchart showing split packaging processing according to the present embodiment.
FIG. 13 is a flowchart showing a split packaging process according to the present embodiment.
FIG. 14 is a flowchart showing split packaging processing according to the present embodiment.
FIG. 15 is a graph showing the deviation of the divided amount of divided powder.
[Explanation of symbols]
  1 ... Dispensing tray
  2 ... coronal coral
  3 ... Dispensing hopper
  4 ... Scratching device
  5 ... Packing hopper
  6. Control device
  7 ... Earl groove
  8 ... Base
  9 ... Ring
  10 ... V-shaped groove
  11 ... Ring open / close arm
  12 ... shoot
  13: Piezoelectric element
  14 ... Partition plate
  15 ... Guide plate
  16 ... Scraper
  17 ... Keyboard
  18 ... Mouse
  19 ... Balance adjustment key
  20 ... Increase / decrease adjustment key
  21 ... Input device
  22: Host computer
  23 ... Drive device
  24 ... Lifting device

Claims (5)

After the powdered medicine supplied to the round groove having a circular arc cross section formed on the outer peripheral upper surface of the distribution tray is partitioned by the partition plate of the scraping device, the distribution tray is divided in the divided feeding direction or the direction opposite to the divided feeding direction. The powder splitting device for evenly scraping and packaging by the scraping device while feeding the distribution tray by a predetermined pitch in the circumferential direction along the rounded groove from the split feed starting position rotated by a predetermined amount according to the number In the adjustment method ,
If the distribution Hatsutsutsumi error with respect to the target amount of Hatsutsutsumi powdered medicine of reference powdered medicine supplied to the dish is out on the positive side of the set range, the split feed start position of the first packaging component by the scooping device, the divided feed While moving by a predetermined pitch in the direction opposite to the direction, if it is off to the minus side, the split feed start position is adjusted by moving by a predetermined pitch in the split feed direction,
When the initial packaging error is within the set range, and the final packaging error with respect to the target amount of the final powder dose of the reference powder supplied to the distribution dish is out of the setting range to the plus side, each by the scraping device A method for adjusting a powder splitting device , wherein the movement pitch of the divided feed is increased by a predetermined dimension while the movement is adjusted by decreasing the movement pitch by a predetermined dimension when the movement is shifted to the minus side . When the difference between the amount of the initial powder and the final powder supplied to the distribution dish is out of the second setting range, if there are more initial packets than the final package, the initial packaging by the scraping device The split feed start position is adjusted by moving a predetermined pitch in the direction opposite to the split feed direction while moving the predetermined feed in the split feed direction if there are more final packets than the initial pack. The adjustment method of the powder splitting device of Claim 1 . When the error with respect to the target amount of the initial powder dose of the second standard powder, which has a different fluidity from that of the standard powder, deviates from the third setting range to the plus side, division of the initial powder by the scraping device the feed start position, while moving by a predetermined pitch in the split feed direction, if deviated to the negative side, in claim 1 which is a split feed direction and adjusting by moving by a predetermined pitch in the opposite direction The adjustment method of the powder splitting device of description. When the error with respect to the target amount of the final powder dose of the second reference powder is out of the second setting range to the plus side, while increasing the movement pitch of each divided feed by the scraping device by a predetermined dimension, 4. The method for adjusting a powder splitting device according to claim 3 , wherein when it is deviated to the minus side, the movement pitch is adjusted by decreasing by a predetermined dimension . When the difference in the amount of powder between the first package of the second reference powder and the final package is out of the fourth setting range, if there are more initial packages than the final package, division of the initial package by the scraping device The feed start position is adjusted by moving the feed start position by a predetermined pitch in the direction opposite to the split feed direction, and by moving the feed start position by a predetermined pitch in the split feed direction if there are more final packs than the initial pack. Item 5. A method for adjusting a powder splitting device according to Item 4 .

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