JPH0629042B2 - Dividing device for powdered medicine in medicine packing machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to improvement of a divider for an object to be packaged in a packaging machine or the like, which mainly divides and packages a drug or the like. More specifically, the divider valve of the divider can be operated by the suction force of the magnet.

Conventional technology: For many patients such as hospitals and clinics, where there is a pharmacy that provides prescription prescriptions and packaged medicines, powders and tablets (including capsules, The same) is divided into the required amount, and a device for packing the same, that is, a medicine packing machine is used.

In this packaging machine, powdered medicines and tablets, which are the objects to be packaged, are weighed by a distribution box, or distributed in a required number, sequentially sent to a hopper, and a wrapping paper which continuously moves them,
It is given to patients by prescription, divided into individual doses and packaged.

In such a packaging machine, particularly important points in terms of function are, in addition to the packaging section, a weighing box for dispensing powder (dispensing box). That is, a valve plate is always attached to the bottom of the powder receiving portion divided into the required internal volume.
It is normally attracted by a coil spring to close the valve, and when the valve is opened, the valve plate is pushed down against the tension of this spring, and the valve plate is rotated about the pivot point.

Therefore, the conventional valve structure attached to this distribution box is liable to malfunction because the operation portion always causes an unreasonable operation. Further, since the spring force is applied during the valve closing operation, the powder is caught between the valve seat and the valve plate due to the abrupt closing, and the powder during the next division may leak from the valve portion. When such a phenomenon occurs, not only the loss of the medicine to be handled but also the packing operation is hindered. Furthermore, the structure is complicated, and the cost is increased accordingly.

As a means for solving such a problem, for example, as disclosed in Japanese Utility Model Publication No. 61-16961, the valve plate is closed by the repulsive force of a magnet, and the valve plate is opened when it is disengaged from the magnetic field. Is proposed.

Problems to be solved: In this way, in the conventional distribution box, in the former method, even the valve for opening and closing the distribution box having a seemingly simple structure, especially the valve opening and closing operation of the valve plate is performed. When handling powdered medicine, it is difficult for the mechanism for operation to maintain the adhesion between the valve plate and the valve seat surface repeatedly and accurately, and as a result, the valve plate and the valve seat are closed when the valve is closed. Foreign matter, such as powder, is present between them, causing leakage. Also, the latter type has a structure in which the valve is closed by utilizing the repulsive force due to the magnetic force and a long magnet plate is required, so the overall structure becomes large, especially the valve plate. Will move while receiving a repulsive force, and it is inevitable that the valve closing operation becomes unstable. In addition, in order to move the divider provided with the distribution box in a stable state, it is required that the guide rail and the magnet plate be parallel to each other, which is expensive.

The present invention intends to solve the above problems and to provide a splitting device having a valve structure which has a simpler structure and which is compact and lightweight and can keep the closed state of the valve stable during movement. To do.

Means for Solving the Problems: The present invention is a powdered medicine in which a plurality of distribution boxes having vertically openable and closable valve plates are arranged in a column, and the valve plates magnetically close the distribution boxes. In the dividing device such as, the stepped portion is provided along both longitudinal sides of the distribution box main body, and the magnets are respectively provided on the stepped portions, and the attraction surface is located at a position slightly separated from the valve seat surface formed on the distribution box bottom. The valve plate is made of a magnetic material and is located at both ends so that the rotation axis is located by the valve plate mounting plate pair provided on both sides of the distribution box body in the middle between the distribution boxes. A valve opening operation that is pivotally supported, contacts the valve seat by the attraction force of the magnet, closes the distribution box, and relatively moves a protrusion protruding outside the valve plate when the medicine is discharged to the packaging unit. Engage with one side to pull down to open the valve In contact with been pushed up member having a function and a valve plate, a dividing apparatus, such as a powdered medicine in medicine packing machine the valve plate is characterized by being configured to close the dispensing valve bottom.

The distributor is supported by a carrier so as to pass through the upper part of the hopper, the valve plates are sequentially opened above the hopper, and the valve plates are sequentially closed on the return stroke.
In this valve opening operation, the projecting piece protruding to the side portion of the valve plate is hit with a swinging operation piece to interrupt the attraction force of the valve plate due to the magnetic force, and the valve is opened. As the valve closing operation, the valve plate rides on the roller and is closed. Of course, it is not limited to these operations.

The valve plate has a pin support structure in which the mounting portion is rotatable and can be moved in the vertical direction so that the valve plate can be securely brought into close contact with the valve seat when attracted by the magnet.

In the medicine dividing device having such a configuration, a distribution box,
Either one of the medicine receiving side hopper and the medicine receiving side hopper can be moved to open or close the valve of the divided accommodating portion.

Further, the dividing device of the present invention may have a circular shape as well as a linear movement type. In this case, the drive mechanism for the valve opening operation piece and the valve closing mechanism are arranged so that the valve plate is opened on the hopper for releasing the drug into the packaging portion at the specific position, and then the valve plate is closed. You can leave it.
Regarding these configurations, it can be easily implemented by changing the mechanism of the linear movement type dividing device of the embodiment described later to a circular one, and it is clear that these belong to the technical scope of the present invention. is there.

Incidentally, as the operation mechanism for closing the valve, in addition to using a roller, a jumping system using a leaf spring, a cam or the like can be adopted.
If necessary, a valve plate or a cleaning mechanism in the distribution box may be arranged in front of the valve closing operation mechanism.

Embodiments Hereinafter, one embodiment of the divider of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall perspective view of a specific example of a divider attached to a medicine packing machine and its drive unit, in which a powdered medicine distribution unit is removed. In this figure, (1) is a divider, (2) is a distribution box body, (20) is a holder of the distribution box body, and (2
Reference numeral 5) is a rail for guiding the retainer (20) of the distribution box body, which is attached to the machine body (not shown). (40) is a divider
A drive device for driving (1), which comprises a timing belt (43 ') between a pulley (42) on an output shaft of a drive machine (41) arranged in a proper position of the machine body and a driven pulley (42'). ) (Not limited to this), and the attachment piece (21) protruding from the retainer (20) is fixed to a part of the
The required section divider (1) is designed to run.

As shown in FIGS. 2 to 5, the distributor body (2) of the divider (1) is a block-shaped one made of a non-magnetic material that is long and thin with a required width. Oval (not limited to this, any shape without corners)
A large number of distribution chambers (3) (powder-and-granule accommodating portions) are arrayed, and the periphery of the bottom surface of the distribution chambers (3) is made flat to form a valve seat (4) with which a valve plate described later comes into contact. . Notched step portions (5) (5) are formed in the longitudinal direction on both sides of the lower surface of the distribution box main body (2) leaving the valve seat (4) forming portion, and this step portion is formed.
(5) is a square rod-shaped magnet (6) over almost the entire length.
(6) is fixed by a mounting cover (7) in which a thin plate of non-magnetic material (or magnetic material) is formed in an angle shape. A notch (5 ') for fastening the magnet mounting cover (7) and the valve plate mounting plate (8) (which is naturally made of non-magnetic material) together is provided on both sides of the distribution box body (2). It is provided.

A valve plate (10) made of a magnetic material plate (for example, a chrome-based stainless steel plate) and having an outer shape as shown in FIG. 5 is provided on both lower sides of the distribution box (3) so as to project at both ends thereof. Support pin
(11) (11), the protruding plate (8 ') (8') of the mounting plate (8) (8)
It is inserted into the support hole (8 ″) provided in the valve and is pivotally supported so as to be the center of rotation between the distribution valves (3). In, the suction force of the magnets (6), (6) makes the valve seat (4) in close contact with the valve plate (10), and the support hole (8 ″) of the mounting plate (8).
In contrast, the support pin (11) is rotatable and can move up and down by an appropriate amount. This valve plate (10) and magnet
(6) The space between the valve plate and the (substantially the mounting cover) is formed in an appropriate amount, for example, about 1 mm, and the valve plate is formed by the inclusion of foreign matter.
It is designed so as not to prevent the (10) from coming into close contact with the valve seat (4).

The divider (1) having such a structure is supported by the retainer (20) at both longitudinal ends thereof, and the retainer (20) is guided by the guide rails (25) attached to the packaging machine body (not shown). Laura (22) (2
2) Guide grooves (26), (26), (26) for (22) as illustrated in FIG.
It is supported so as to travel by engaging with.

A splitting gutter (32) for powdered medicine is arranged above the standby position of the divider (1) as in the known packaging machine (see FIG. 6).

On the side opposite the work surface along the moving path of the divider (1), on the upper side of the hopper (30) to the packaging unit, a crank mechanism (16) driven and driven separately by power is used to reverse the swing. Moving valve plate
At the position where the opening operation piece (15) of (10) passed the hopper (30), the open valve plate (10) mounted on the rotating body to close the valve (10). 17) is erected so as to abut the central portion of the valve plate (10). The valve opening operation piece
(15) is a protruding piece (12) formed by protruding from one end of the valve plate (10).
Then, only in the forward stroke of the divider (1), the valve opening operation piece (15) is brought into contact with the valve opening operation piece to perform the valve opening operation.

The divider of the packing machine configured in this way is used for packing powder powder, as in the conventional operation, by metering the required powder powder into the splitting gutter (32) whose lower part can be fully opened, and using a spatula evenly. Then, by fully opening the gutter bottom, this split gutter (3
The powdered medicine is almost evenly introduced into each distribution box (3) of the divider (1) waiting immediately below (2) (the upper part of each distribution box (3) has a slope of upward spread, To ensure that the powder is accepted).

When this receiving operation is completed, the drive machine (41) is activated to drive the cage (20) along the guide rail (25) via the wound timing belt (43). Then, the divider (1) supported by the retainer (20) is placed on the hopper (30) arranged at the upper part of the packaging mechanism (not shown), and the distribution box (3).
Link mechanism (16) that is designed to operate in synchronization with the traveling speed in advance every time one of the two arrives.
The valve opening operation piece (15) operated by the
By pressing (or striking) (12) downwards, the valve seats are then moved by the magnets (6) (6).
The valve plate (10) adsorbed on (4) is released from the adsorption due to its magnetic force, opens downward around the pivot pin (support pin) (11), and stays in the distribution box (3). Another package of powder is released into the hopper (30) (see FIGS. 7 and 8).

When the distribution box (3) that has advanced after such valve opening and discharge of stored powder has passed through the upper part of the hopper (30) and proceeds further, the valve plate (10) hanging from the pivotal part moves. It contacts the valve-closing roller (17) which is erected on the road, and is sequentially pushed up by being stroked by the roller (17). Then, when it reaches the magnetic field of the magnets (6) and (6), it is immediately attracted and the valve plate (10) contacts the valve seat (4), and the distribution box (3) is closed.

As mentioned above, the bottom surface of the magnet (6) and the valve plate (10) when the valve is closed
Since an appropriate gap is provided between the upper surface and the upper surface, the valve can be closed without trouble even if powder particles adhere to the magnet surface when the valve is opened (see FIG. 8).

When the divider (1) has moved its entire length or has moved the required distance, the valves at the bottom of the distributor (3) are opened in sequence, and when the powdered medicine has been supplied to the packaging unit in 1-minute packages, the valve opening valve ( 15) Rotate and raise 15) to a position where it does not come into contact with the protruding piece (12) attached to the valve plate, and drive the machine (41).
Reverse to return the divider (1) to the standby position. Therefore, in the returning process, the valve at the bottom of the distribution box remains closed.

Since the shape of the valve plate (10) is offset from the pivot axis to one side, the valve seat (4) is opened when the valve is opened.
When the powder is completely separated from the surface, the whole amount of powdered powder (powder) in the distribution box (3) can be discharged to the hopper without adhering to the valve plate (10). In addition, since each valve of the distribution box operates independently as in the conventional case, even if foreign matter is present between the valve plate and the valve seat at one place, it may be different from the others. Has no effect on.

As described above, according to the present invention, the valve is closed by skillfully utilizing the magnet. Therefore, the divider is fixed, and the hopper and the valve plate opening device (the valve opening device in the above embodiment). Similar effects can be obtained by moving the operation piece), the valve closing roller, and the like along the lower side of the distribution box body. Further, although one more valve plate is required, the closing direction of the valve plate may be reversed between the forward stroke and the backward stroke of the divider.

EFFECTS OF THE INVENTION According to the present invention, as described above, the magnet can be skillfully incorporated to stably maintain the closing force of the valve plate, and the supporting mechanism of the valve plate is simplified. It can be said that it is useful because it eliminates all the leakage of powder, the complexity of valve opening / closing operations, etc., like the divider in the packaging machine, and can reduce the product cost by simplifying the structure.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an embodiment of a powder medicine divider of the medicine packing machine of the present invention, FIG. 2 is a partial perspective view of the divider, and FIG. 3 is a support of the divider and a retainer for the traveling guide rail. FIG. 4 is a diagram showing the relationship, FIG. 4 is a partially enlarged vertical sectional view taken along line II-II of FIG.
FIG. 5 is a partial bottom view of the divider, FIG. 6 is a cross-sectional view of a specific example showing the relationship between the divider and the powder-splitting gutter, and FIG. 7 is a perspective view showing the valve opening operation part of the dispensing box. FIG. 8 is a view showing a valve closing operation part of the distribution box. (1)… Divider, (2)… Distribution box body (3)… Distribution box, (4)… Valve seat (5)… Notch step, (6)… Magnet (7)… Magnet mounting cover (8) )… Valve plate mounting plate, (8 ′)… Projection piece (8 ″)… Support hole, (10)… Valve plate (11)… Support pin, (12)… Projection piece (15)… Valve opening operation piece , (17)… Valve for closing valve (20)… Retainer of divider, (21)… Mounting piece (25)… Guide rail, (30)… Hopper (32)… Gutter for splitting, (41)… Driving Machine (43) ... Timing belt

Claims (1)

[Claims] 1. A dividing device for powdered medicines, etc., wherein a plurality of distribution boxes provided with vertically openable and closable valve plates at the bottom are arranged in tandem, and the valve plates close the distribution cell bottom by magnetic force. Steps are provided along both longitudinal sides of the box body, and magnets are fixed to the steps, respectively, so that the attraction surface of the magnets is located at a position slightly separated from the valve seat surface formed on the bottom of the distribution box. The valve plate is made of a magnetic material and is pivotally supported at both ends so that the rotation axis is located by a pair of valve plate mounting plates provided along the both sides of the distribution box body in the middle of the distribution box. When the medicine is released to the packaging part, the projection piece that is projected outside the valve plate is brought into contact with the valve seat by the suction force of the Has a push-up function that is placed in another position. A dividing device for powdered medicine in a medicine packing machine, characterized in that the valve plate is configured to close the distribution valve bottom by contact between the member and the valve plate.