KR101020620B1 - Powder medicine feeding apparatus - Google Patents

Abstract

In the medicine supply device, the operator can manually adjust the vibration applied from the vibration generator to the trough.

The medicine supply device includes a control device 15 capable of executing an automatic mode for controlling the vibration output of the piezoelectric elements 47A and 47B based on the detection output of the vibration sensor 48. The operation knob 16 is provided with adjustment knobs 101A and 101B for changing from the automatic mode to the manual mode and setting the vibration output of the piezoelectric elements 47A and 47B in the manual mode. When the control device 15 receives the command input from the adjustment knobs 101A and 101B, the control device 15 outputs the vibration output of the piezoelectric elements 47A and 47B to maintain the set vibration intensity based on the detection output of the vibration sensor 48. Manual mode to control can be executed.

Description

Powder feeder {POWDER MEDICINE FEEDING APPARATUS}

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the external appearance of the medicine packaging apparatus provided with the powder supply apparatus of embodiment of this invention.

Figure 2 is a perspective view showing a powder dispensing portion of the drug packaging device of FIG.

Figure 3 is a perspective view showing a powder dispensing portion of the drug packaging device of FIG.

It is a schematic block diagram which shows the powder supply apparatus of embodiment of this invention.

It is a left side view which shows the powder supply apparatus of embodiment of this invention.

It is a front view which shows the powder supply apparatus of embodiment of this invention.

It is a top view which shows the powder supply apparatus of embodiment of this invention.

8 is a front view illustrating the operation panel.

FIG. 9 is a graph showing a relationship between time and a voltage applied to a piezoelectric element and a detection output of a vibration sensor in the automatic mode.

Fig. 10 is a graph showing an example of the relationship between the time and the voltage applied to the piezoelectric element and the detection output of the vibration sensor when the adjustment knob and the automatic mode return switch are operated.

Fig. 11 is a graph showing another example of the relationship between the time applied to the piezoelectric element and the detection output of the vibration sensor when the adjustment knob and the automatic mode return switch are operated.

<Explanation of symbols for the main parts of the drawings>

1: Distribution of acid powder 2: Acid packaging part

3: opening and closing door 4: device body

5: table 6,7: disc

8A, 8B: Powder feeder 9: Extraction device

10: outer circumferential groove 11,12: drive motor

15: control device 16: operation panel

20: expectation 21: hopper

21a: upper opening 21b: lower opening

22: trough 22a: tip

23: hopper support portion 23a: hopper support frame

23b: supporting arm 23c: auxiliary arm

25: pedestal 27: the rotating part

29: Cam Followers 31: Cam

33: angle control motor 33a: rotation axis

34: angle stop sensor 35: magnet

36: non-detection part 37: Hall element

38: hopper strike mechanism 39: solenoid

39a: output shaft 40: hopper striking member                 

41: trough support member 42: weight member

43: vibration generating mechanism 44: spring

45 bracket 46 fixed block

47A, 47B: piezoelectric element 48: vibration sensor

49: balancer 50: powder drop detection sensor

51A, 51B, 51C, 51D: D / A Converter 52A, 52B, 52C: A / D Converter

60: personal computer 61: fixed block

101A, 101B: Adjustment knob 102A, 102B: Automatic mode return switch

103A, 103B: Level meter 104A, 104B: Operation lamp

The present invention relates to a powder supplying device for supplying powdered medicines to a supply object such as a disk provided in the drug distribution device.

Conventionally, for example, as disclosed in the specification of Japanese Patent No. 2669511, a disk having an outer circumferential groove formed on a cross-section arc is provided on the outer circumference so as to be rotatable driven, and a powder is supplied to the outer circumferential groove by a powder supplying device. A medicine packaging device is known in which a powder of the powder supplied to the outer circumferential groove is scraped out by a powder dispensing device, and supplied to the packaging device through a hopper to be packaged one by one. The powder supplying device includes a hopper, a trough, a vibration generator, and the like, as described in, for example, Japanese Patent Application Laid-Open No. 8-156914 and Japanese Patent Application Laid-Open No. 8-156916, The output of the vibration generator is automatically controlled based on the detection output of the vibration sensor, whereby a quantity of powder is supplied to the disk.

However, even if the output of the vibration generator is automatically controlled in consideration of conditions such as the type of powder, the shape and size of the powder, and the like, it is difficult to quantify the supply amount of the powder with high accuracy. Therefore, there has been a strong demand for the operator to manually adjust the output of the vibration generator.

Accordingly, an object of the present invention is to provide a powder supplying device in which an operator can manually adjust the vibration applied from the vibration generator to the trough.

Accordingly, the present invention provides a vibration generator for applying vibration to a trough and conveying a dropping powder falling from the hopper to the trough toward a supply object, and a vibration for detecting the vibration output of the vibration generator. A powder supplying device having a detector and a control unit capable of executing an automatic mode for controlling the vibration output of the vibration generator based on at least the detection output by the vibration detector, comprising: switching from the automatic mode to the manual mode; And a manual mode changer for setting the vibration output of the vibration generator in the manual mode, wherein the control unit receives the command from the manual mode changer, based on the detection output of the vibration detector. The manual mode for controlling the vibration output of the vibration generator to maintain the vibration intensity set by the mode converter It provides, Yam feeder, characterized in that possible.

In the powder supplying device of the present invention, the output of the vibration generator applying vibration to the trough can be switched from the automatic mode to the manual mode by the manual mode changer. Further, the output of the vibration generator in the manual mode can be set by the manual mode changer.

And an automatic mode return commander for commanding to return from the manual mode to the automatic mode, wherein the control unit controls the vibration output of the vibration generator when receiving a command from the automatic mode return command. It is preferable to switch to the automatic mode from.

In addition to the manual mode changer, by installing the automatic mode return commander, the control of the vibration output of the vibration generator can be freely switched between the automatic mode and the manual mode.

Further, when the control unit receives a command from the automatic mode return command during the manual mode, the control unit maintains the vibration intensity at the point of time when the command is received for a predetermined time, and sets the automatic mode on the basis of the vibration intensity. It is desirable to resume.

Since a sudden change in the output of the vibration generator can be prevented when a command is input from the automatic mode return commander to the control unit, the automatic mode is returned to the automatic mode without causing a sudden increase or decrease in the supply amount of the chemical to the supply target. can do.

Next, embodiments of the present invention shown in the drawings will be described in detail.                     

1 to 3 show a medicine packaging device provided with a powder supplying device according to an embodiment of the present invention. The medicine packaging apparatus includes a powder dispensing part 1 and a powder packing part 2. In Fig. 1, 60 is a personal computer for receiving or inputting prescription data.

As shown in FIG. 2 and FIG. 3, the powder dispensing part 1 is provided on the table 5 of the apparatus main body 4 covered by the top cover 3 (refer FIG. 1) so that opening is possible. And second discs (supply targets) 6 and 7, powder supply devices 8A and 8B, and dispensing device 9, respectively. In addition, the drawing-out apparatus 9 is abbreviate | omitted in FIG.

The disks 6 and 7 are rotationally driven around the axial holes 6a and 7a extending in the vertical direction by the drive motors 11 and 12, respectively. The discs 6 and 7 are provided with outer peripheral grooves 10 in cross section arcs. In the state in which the disks 6 and 7 are rotated, powder is supplied to the outer peripheral groove 10 from corresponding powder supplying devices 8A and 8B. The 1st disk 6 is provided in the position slightly higher than the 2nd disk 7, and it is provided on the table 5 in the state which the outer peripheral part of both superimposed partially in planar view. The cleaning apparatus for cleaning the outer circumferential grooves 10 of the disks 6 and 7 is provided on the table 5, which is omitted in FIGS. 2 and 3.

The dispensing device 9 is disposed at the center of each of the disks 6 and 7, and extracts the powder of powdered powder supplied to the outer circumferential groove 10 by the powder supplying devices 8A and 8B one by one. Drop to (2).

The powder packing unit 2 includes a conveying means for automatically conveying the wrapping paper wrapped on a roll, a hopper member for supplying powdered powder to the conveyed wrapping paper, and a sealing means for heat sealing the wrapping paper supplied with powder. .

Next, with reference to FIG. 1 and FIG. 4 thru | or FIG. 8, the powder feeder apparatus 8A, 8B is demonstrated. First, referring to FIG. 4, the powder supplying devices 8A and 8B are connected to a common control device (control unit) 15, and the control device 15 is connected to the upper surface of the device body 4 of the medicine packaging device. It is connected to the operation panel 16 provided (refer FIG. 1). Since the powdered feeders 8A and 8B have the same structure, the powdered feeders 8A will be described below unless otherwise noted.

Referring to FIGS. 4 to 7, the medicament supplying device 8A is placed on a base 20 arranged on the table 5 (see FIGS. 2 and 3) of the medicine packaging device. 21 and trough 22 are provided.

The hopper 21 is attached to the hopper support part 23. The hopper support part 23 is provided with the hopper support frame 23a by which the hopper 21 is detachably attached, and the support arm 23b extended downward from this hopper support frame 23a, The support arm 23b is connected to the pedestal 25 fixed on the base 20 via the pivot 27. Therefore, the hopper 21 can rock in the up-down direction using the rotation part 27 as a point.

As shown most clearly in FIG. 6, an auxiliary arm 23c for oscillating driving is provided on the front side of the hopper support 23. The cam follower 29 is attached to the lower end side of this auxiliary arm 23c. On the other hand, on the base 20, the angle control motor 33 to which the cam 31 for hopper angle adjustment is fixed is fixed to the rotation shaft 33a. Since the cam follower 29 follows the posture change of the cam 31, the angle of the hopper 21 around the pivot 27 depends on the rotation angle position of the rotation shaft 33a of the angle control motor 33. Changes.

And the angle stop sensor 34 for setting the angle around the rotating part 27 of the hopper 21 is provided. The angle stop sensor 34 is fixed to the rotation shaft 33a of the angle control motor 33, and the non-detection portion 36, on which a plurality of magnets 35 are mounted at regular intervals on the outer circumference thereof, and the magnets 35 The hall element 37 for detecting the rotational angle position of the rotation shaft 33a is provided by detecting the generated magnetic force.

Furthermore, a hopper strike mechanism 38 for intermittently impacting the hopper 21 is provided. The hopper strike mechanism 38 includes a solenoid 39 and a hopper strike member 40 whose proximal end is fixed to the output shaft 39a of the solenoid 39. When the solenoid 39 is driven, the tip of the hopper striking member 40 collides with the side of the hopper 21 to apply an impact.

The trough 22 is arrange | positioned so that it may extend in the horizontal direction from the lower side of the hopper 21, and the tip 22a is bent downward. The trough 22 is screwed and fixed to the trough support member 41, and a weight member 42 is fixed to the bottom of the trough support member 41. The trough support member 41 is connected to the base 20 via the vibration generating mechanism 43. The vibration generating mechanism 43 is provided with a bracket 45 screwed to the base 20 through a spring 44 for preventing vibration transmission. The fixing block 46 is fixed to this bracket 45. The lower ends of the two piezoelectric elements (vibration generators) 47A and 47B are fixed to the fixed block 46. The upper ends of the piezoelectric elements 47A and 47B are fixed to the fixing block 61 fixed to the trough support member 41. Therefore, when the voltage is applied to the piezoelectric elements 47A and 47B to expand and contract in the thickness direction, vibration in the front-rear direction is applied to the trough 22 through the trough support member 41. In order to detect the vibration intensity applied to the trough 22, that is, the vibration output of the piezoelectric elements 47A and 47B, a vibration sensor (vibration detector) 48 is disposed on the bracket 45. Furthermore, a balancer 49 is fixed to the rear end side of the bracket 45 for balancing the forward and backward movement of the bracket 45 when the piezoelectric elements 47A and 47B are driven.

A clearance gap is provided between the lower end of the hopper 21 and the trough 22, and the chemical | medical agent injected into the hopper 21 from the upper end opening 21a on the trough 22 from the lower end opening 21b. Fall down. The dropping liquid dropped onto the trough 22 moves the trough 22 from its proximal end to the tip 22a by the vibration given to the trough 22 by the vibration generating mechanism 43, and the tip 22a. Falls from the outer circumferential groove 10 of the disk 6 from the bottom. In order to detect the presence or absence of the dropping powder falling from the trough 22 to the disk 6, a reflection dropping liquid detecting sensor 50 is provided.

The control apparatus 15 consists of a microcomputer, peripheral circuits, such as a memory and an I / O port, and peripheral elements, for example. As shown in FIG. 4, the control device 15 includes the operation lamps 104A and 104B, the solenoid 39, and the angle control motor 33 described later via the D / A converters 51A, 51B, 51C, and 51D. ) And piezoelectric elements 47A, 47B are connected, and these are driven by instructions from the control device 15. In the control device 15, the Hall element 37, the vibration sensor 48, and the powder drop detection sensor 50 of the angle stop sensor 34 are connected via the A / D converters 52A, 52B, and 52C. The detection outputs of these sensors are input to the control device 15.

The operation panel 16 is provided with adjustment knobs (manual mode changers) 101A and 101B corresponding to the respective powder supplying devices 8A and 8B. As described later in detail, by operating the adjusting knobs 101A and 101B, the vibration output of the piezoelectric elements 47A and 47B can be switched from the automatic mode to the manual mode. By operating the adjusting knobs 101A and 101B, the vibration output of the piezoelectric elements 47A and 47B in the manual mode can be set. The vibration intensity set by the adjusting knobs 101A and 101B is displayed on the level meters 103A and 103B made up of a plurality of LED segments, for example. Then, the operation panel 16 is an automatic mode return switch (automatic mode return commander) 102A, 102B for returning the vibration output of the piezoelectric elements 47A, 47B from the manual mode to the automatic mode. ) Is provided. Moreover, the operation panel 16 is provided with operation lamps 104A and 104B for indicating whether or not each of the powder supply devices 8A and 8B are in operation.

In addition, the operation panel 16 includes a closing switch 106A and 106B for opening and closing (not shown) of opening and closing the top opening 21a of the hopper 21 of each of the medicine supply devices 8A and 8B. The switch 107A, 107B, the start switch 108 and the stop switch 109 for starting and stopping the whole medicine supply apparatus, and the display part 110 which displays segment number, for example, are provided.

Next, the control of the vibration output of the piezoelectric elements 47A and 47B in the powder supply apparatuses 8A and 8B of the present embodiment will be described.                     

The control of the vibration output of the piezoelectric elements 47A and 47B includes an automatic mode in which the control device 15 automatically controls the vibration output of the piezoelectric elements 47A and 47B, and an operator adjusts the adjustment knob of the operation panel 16. There is a manual mode for setting the vibration output by operating 101A and 101B. Unless the adjusting knobs 101A and 101B are operated, the vibration output of the piezoelectric elements 47A and 47B is controlled in the automatic mode.

The principle of the automatic mode in this embodiment is demonstrated. When the vibration output of the piezoelectric elements 47A and 47B is maintained at a constant value, the weight of the whole trough 22 including the reagent is increased as the speed of the reagent falling on the tip 22a by conveying the trough 22 image is higher. Since the decreasing speed of the is high, the decreasing speed of the voltage value that needs to be applied to the piezoelectric elements 47A and 47B is also increased. On the contrary, since the slower the rate of dropping the conveying powder onto the trough 22 is, the slower the rate of decrease of the weight of the whole trough 22 including the dropping powder is applied to the piezoelectric elements 47A and 47B in order to maintain a constant vibration output. The rate of decrease of the voltage value that needs to be applied also becomes slow. In this way, when the vibration output of the piezoelectric elements 47A and 47B is maintained at a constant value, the conveyance speed of the powder on the trough 22 and the time change of the voltage applied to the piezoelectric elements 47A and 47B are correlated. . Thus, the control device 15 controls the applied voltage to the piezoelectric elements 47A and 47B based on the detection output of the vibration sensor 48 so as to maintain the vibration output at a constant value, and for a predetermined time interval (for example, 15). The time change of the applied voltage to the piezoelectric elements 47A and 47B is inspected at every inspection timing (second interval). When the drop speed of the applied voltage is faster than the target value, the conveying speed of the powder on the rope 22 is lower than the target value, and the vibration output of the piezoelectric elements 47A and 47B is lowered. When the conveying speed of the powder on the trough 22 smaller than the value is later than the target value, the vibration output of the piezoelectric elements 47A and 47B is increased.

An example of the automatic mode will be described with reference to FIG. 9. In Fig. 9, V shows the voltage applied to the piezoelectric elements 47A and 47B, and L shows the vibration level which is the vibration output of the piezoelectric elements 47A and 47B. The vibration level is set at several decibels to several tens of decibel intervals, and the larger the vibration level, the larger the vibration output of the piezoelectric elements 47A and 47B. These points are the same also in FIGS. 10 and 11 described later.

When the start switch 108 is operated at time t0, the control device 15 applies the voltage to the piezoelectric elements 47A and 47B until the vibration level reaches an initial value (in this example, the vibration level "8"). Increase the value. When the vibration level reaches the initial value at the time t1, the control device 15 adjusts the voltage applied to the piezoelectric elements 47A and 47B so as to maintain the vibration level. At a time t2 after the predetermined time α has elapsed from the time t1, the control device 15 is applied to the piezoelectric elements 47A and 47B between the time t1 and the time t2. Check the rate of decrease. As shown by the thick solid line, the vibration level is maintained when the rate of decrease of the voltage value is the target value. However, when the rate of decrease of voltage is smaller than the target value as shown by the solid line, since the conveying speed of the powder on the trough 22 is lower than the target value, the vibration level is increased by one rank and set to "9". Then, the voltage applied to the piezoelectric elements 47A and 47B is adjusted to maintain this vibration level. Conversely, when the rate of decrease of the voltage is larger than the target value as shown by the dotted line, since the conveying speed of the powder on the trough 22 is higher than the target value, the vibration level is reduced by one rank and set to "7". The voltage applied to the piezoelectric elements 47A and 47B is adjusted to maintain this vibration level. For each time t3, t4... Which is the inspection timing at a predetermined time interval α, the reduction rate of the voltage is compared with the target value, and the vibration levels of the piezoelectric elements 47A and 47B are increased and decreased accordingly.

When the operator operates the adjustment knob 101A during the automatic mode execution, the control of the vibration output of the piezoelectric elements 47A and 47B of the corresponding powder supply device 8A shifts to the manual mode. When the operator operates the automatic mode return switch 102A during the manual mode, the controller 15 controls the vibration output of the piezoelectric elements 47A and 47B of the corresponding powder supply device 8A in the manual mode. Return to auto mode from.

Referring to Fig. 10, the automatic mode is performed until time t2 ', and the vibration level is maintained at &quot; 8 &quot;. When the operator operates the adjustment knob 101A of the operation panel 16 to set the vibration level to "11" at time t2 ', the control device 15 that has received the command input to the adjustment knob 101A Then, the voltage applied to the piezoelectric elements 47A and 47B is raised momentarily so that the vibration levels of the piezoelectric elements 47A and 47B of the corresponding powder supply device 8A become "11". From time t2 ', the control apparatus 15 adjusts the voltage applied to the piezoelectric elements 47A and 47B so that the vibration level "11" set manually based on the detection output of the vibration sensor 48 may be maintained. If the operator inputs a return command by operating the automatic mode return switch 102A of the operation panel 16 at time t3 ', the control device 15 that has received this return command returns the vibration level "11" at that time. Is maintained until a time t4 which is the next inspection timing. From time t4, the automatic mode is resumed based on the vibration level "11". Specifically, at the time t4, the rate of decrease of the applied voltage to the piezoelectric elements 47A and 47B between the time t3 and the time t4 is examined, and accordingly the piezoelectric elements 47A, Adjust the vibration level of 47B). In the example of FIG. 10, since the reduction speed is larger than the target value, the vibration level is lowered by one rank and set to "10". In this way, when the vibration level is maintained for a predetermined time when returning from the manual mode to the automatic mode, and then shifted to the automatic mode based on the vibration level, the piezoelectric elements 47A, The sudden change in the output of 47B) can be prevented. Therefore, it is possible to return to the automatic mode from the manual mode without causing a sudden increase or decrease in the supply amount of the powder to the master 6.

Referring to Fig. 11, the automatic mode is performed until time t2 ', and the vibration level is maintained at &quot; 8 &quot;. When the vibration level is set to &quot; 5 &quot; by the device of the adjusting knob 101A at time t2 ', the control device 15 applies the voltage applied to the piezoelectric elements 47A and 47B so that the vibration level is &quot; 5 &quot;. Decreases instantaneously. From the time t2 ', the voltage applied to the piezoelectric elements 47A and 47B is adjusted so that the vibration level "5" set manually based on the detection output of the vibration sensor 48 may be maintained. When the operator operates the automatic mode return switch 102A and inputs a return command at time t3 ', the control unit 15 sets the vibration level "5" at that time until the next inspection timing t4. Keep it. From time t4, the automatic mode is resumed based on the vibration level "5". Specifically, at the time t4, the rate of decrease of the applied voltage to the piezoelectric elements 47A and 47B between the time t3 and the time t4 is examined, and accordingly the piezoelectric elements 47A and 47B are examined. Adjust the vibration level. In the example of FIG. 11, since the reduction speed is smaller than the target value, the vibration level is increased by one rank and set to "6".                     

As described above, in the powder feeder apparatuses 8A and 8B of the present embodiment, the output of the piezoelectric elements 47A and 47B for applying vibration to the trough 22 by the operation of the adjusting knobs 101A and 101B is controlled from the automatic mode. The manual mode can be switched, and the vibration level in the manual mode can be manually adjusted. By operating the adjusting knobs 101A and 101B and the automatic mode return switches 102A and 102B, the control of the vibration output of the piezoelectric elements 47A and 47B can be freely switched to either the automatic mode or the manual mode. have.

This invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, the automatic mode is not limited to the above-described one, and may be any one that automatically controls the vibration output of the piezoelectric elements 47A and 47B based on at least the detection output of the vibration sensor 48. Incidentally, vibration may be applied to the trough by an element or device other than the piezoelectric element. Furthermore, in the above embodiment, the adjusting knobs 101A and 101B are provided with both a function for switching to the manual mode and a function for setting the vibration level in the manual mode. You may also do it. Furthermore, in the above embodiment, switching from the manual mode to the automatic mode is performed by dedicated automatic mode return switches 102A and 102B. For example, the closing switches 106A and 106B and the open switch ( In the case where both 107A and 107B are operated at the same time, the configuration may be switched from the manual mode to the automatic mode.

As apparent from the above description, the powder supply apparatus of the present invention can switch the output of the vibration generator applying vibration to the trough from the automatic mode to the manual mode by the manual mode switch. The output of the vibration generator in the manual mode can be set by the manual mode changer. Therefore, the operator can manually adjust the vibration applied from the vibration generator to the trough by operating the manual mode changer.

And, in addition to the manual mode switch, in addition to the automatic mode return command, the operator operates the manual mode switch and the automatic mode return command to control the vibration output of the vibration generator between the automatic mode and the manual mode. You can switch freely.

Furthermore, when the control section receives a command from the automatic mode return command in the manual mode and maintains the vibration intensity at the time when the command is received for a predetermined time, when the automatic mode is resumed with the vibration reference value, The sudden output change of the vibration generator at the time of returning from the mode to the automatic mode can be prevented. Therefore, it is possible to return to the automatic mode from the manual mode without causing a sudden increase or decrease in the supply amount of the powder to the supply target.

Claims (3)

A vibration generator for applying vibration to the trough and conveying the dropping medicine falling from the hopper toward the supply object toward a supply object, a vibration detector for detecting the vibration output of the vibration generator, and at least the vibration A powder supplying device comprising a control unit capable of executing an automatic mode for controlling a vibration output of the vibration generator based on a detection output by a detector, A manual mode switch for changing from the automatic mode to the manual mode and setting the vibration output of the vibration generator in the manual mode, The control unit is capable of executing the manual mode of controlling the vibration output of the vibration generator to maintain the vibration intensity set by the manual mode converter based on the detection output of the vibration detector when receiving a command from the manual mode switch. Powdered feeder characterized in that. 2. The automatic mode return commander according to claim 1, further comprising an automatic mode return command for instructing a return from the manual mode to the automatic mode, And the control unit switches the control of the vibration output of the vibration generator from the manual mode to the automatic mode when receiving a command from the automatic mode return commander. The control unit according to claim 2, wherein, when the control unit receives a command from the automatic mode return command in the manual mode, the control unit maintains the vibration intensity at the time of receiving the command for a predetermined time and sets the vibration intensity as a reference value. A powder supplying device, characterized in that to resume the automatic mode.

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