JP2001122201A - Scraping device and portion packaging machine therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scraping device in which the plate thickness of rotating plates is thinned, contact sections being in contact with powdered medicine resin sections are reduced to control the adhesion of the powdered medicine onto the rotating plates and improve the portioning accuracy of the powdered medicine, and the maintenance is easy, and also to provide a portion packaging machine using the device. SOLUTION: Disks 3 of a scraping device B are so constituted as to clamp resin plates of plate thickness uniform all over the whole zone by metal plates 31a and 31b, partitions 5 are so constituted as to clamp resin plates of plate thickness uniform all over the whole zone by metal plate 51a and 51b, and all above resin plates are provided with protrusions 32a and 52a protruded respectively from the metal plates 31a and 31b and the metal plates 51a and 51b. Thus, the resin sections protruded in the plate thickness direction of the disks 3 and partitions 5 are eliminated to make the plate thickness thinner and firmly fix the resin sections on the metal plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraping-out device for quantitatively dividing powdered drugs distributed on a turntable of a packaging machine and scraping the powder to a packaging device, and a packaging machine provided with the same.

[0002]

2. Description of the Related Art As a packaging machine for dividing a small amount of powder into small quantities at a time, a turntable having an annular groove on the outer periphery and a scraping device for scraping powder on the annular groove toward a hopper is provided. Rotary packaging machines are known.

FIGS. 6 and 7 show an example of such a packaging machine. 6 shows a state in which the powder is distributed on the turntable of the packaging machine, and FIG. 7 shows a state in which the powder is scraped and divided. This packaging machine includes a turntable 101, a powder supply device 102 for dropping and supplying a powder onto the turntable 101, a hopper 104 for receiving the scraped powder, and a packaging device 105 for individually packing the powder from the hopper. Device 103 for scraping powder on the turntable 101 into a packaging machine main body A made of
Are provided.

The turntable 101 has an annular groove 111 having an arc-shaped cross section on the upper surface, and is rotated on a horizontal plane of the packaging machine main body A by a driving device (not shown). When the powdered medicine is dropped from the powdered medicine supply device 102 into the annular groove 111, the turntable 101 rotates at a constant high speed in order to distribute the powdered medicine uniformly in the annular groove 111 in the circumferential direction. When the powder is uniformly distributed in the circumferential direction and is scraped out by the scraping device 103, the powder is intermittently rotated because a fixed amount of the powder is sent to the scraping device 103.

[0005] The powder supply device 102 is for dropping powder into the annular groove 111 of the rotating turntable 101, and is fixed to the packaging machine main body A and arranged above the annular groove 111. The powdered powder supplied to the powdered powder supply device 102 is continuously dropped onto the annular groove 111 in small amounts.

The scraping device 103 includes a rotor arm 12
1 and a rotor 122. Rotor arm 121
Is a rotor arm support shaft 123 extending inward and outward of the diameter of the turntable 101 and having, at one end, a first axis a in a direction along a tangential direction of the turntable 101.
Thus, it is supported on the packaging machine main body A so as to be vertically rotatable. Thus, the other end side of the rotor arm 121 can approach and separate from the annular groove 111. On the other end side of the rotor arm 121, a rotor support portion 124 having a second axis b parallel to the first axis a is provided.
Are provided, and the rotor 122 is rotatably supported. The rotor 122 includes a shaft core 125,
26, and rotating plates 127 and 128, all of which rotate integrally. The scraping claw 126 is provided on the shaft core 125 so as to extend in and out of the second axis b. When the scraping device 103 approaches (rotates downward) the annular groove 111, the claw tip 126a comes into contact with the annular groove 111, and the powdered surface 126b scrapes out a certain amount of the powdered medicine. It has become. Each of the rotating plates 127 and 128 is provided so as to cover the left and right ends of the scraping claw 126 so that the powder on the annular groove 111 can be scraped out by a fixed amount. The curvature of the peripheral portions of the rotating plates 127 and 128 corresponds to the curvature of the annular groove 111.

[0007] The hopper 104 is a funnel-shaped member that is open downward at a position outside the turntable 101 and at a position where the powdered medicine scraped by the scraping device 103 is received. The powder received here is the packaging device 1
05.

The packaging device 105 is provided immediately below the hopper 104 and includes a paper feeder 116 for feeding out unsealed wrapping paper 115 and a bag binding machine 117. Hopper 104
Is received on the unsealed packaging paper 115, and the packaging paper 115 on which the powdered medicine is loaded is welded and packaged by the bag binding machine 117.

This packaging machine operates as follows. First, as shown in FIG. 8, while rotating the turntable 101 at a constant high speed, the powdered medicine is supplied from the powdered medicine supply device 102 onto the annular groove 111 on the turntable 101,
The powder is uniformly distributed in the circumferential direction on the annular groove 11. At this time, the scraping device 103 keeps the rotor 122 apart (rotated upward) from the annular groove 111 so as not to come into contact with the turntable 101. When the powdered medicine is uniformly distributed in the circumferential direction on the annular groove 111, the scraping device 103 is rotated downward as shown in FIG.
The rotating plates 127a and 127b of the rotor 122 are
1, the turntable 111 is intermittently operated, and the rotor 122 is intermittently rotated from the inner peripheral side to the outer peripheral side, thereby scraping out the powder. The scraped powder is scraped off by the hopper 4 and dropped on an unsealed packing paper 115, and the packing paper 115 on which the powder is placed is sent to the bag binding machine 117, where it is welded. Individually packaged, a packaged powder 118 is manufactured.

[0010]

By the way, in such a conventional packaging machine, the scraping device 103 operates so as to scoop out the powdered medicine within a range divided by the rotating plates 127 and 128 at a predetermined interval by the scraping claw 126. By doing so, the powder is divided into a fixed quantity and divided.

The rotating plate 128 is shown in FIG.
FIG. 5 shows a scraping device provided with each 28. The main parts of these rotary plates 127 and 128 are made of metal in order to ensure high strength and to prevent powder from adhering due to static electricity or the like. However, if the whole is made of metal, the turntable 101 is used during the packaging operation.
And the metal portion directly abut, and the annular groove 111 is damaged. Further, the annular groove 111 and the rotary plate 127,
It is technically very difficult to keep a very small gap between them so that they do not directly abut the 128. Therefore, a resin made of silicon rubber or the like is lined around the periphery of the metal plates 127a and 128a constituting the main parts of the rotary plates 127 and 128, respectively.
28b, and the resin portions 127a and 128a are elastically brought into contact with the annular groove 111, whereby the annular groove 11 is formed.
No one was scratched. As described above, when the resin parts 127b and 128b are attached to the metal plates 127a and 128a by lining, the resin parts 127b and 128b are attached.
In order to increase the bonding strength of 28b, a large bonding area must be secured. Therefore, the resin parts 127b, 128
b inevitably increases in size and protrudes in the plate thickness direction,
7, 128 became thicker, which had an adverse effect on the accuracy of dividing the powder. For example, even if the thickness of the metal plate 127a is 0.8 mm, if the resin portion 127b is lined, the maximum thickness becomes close to 3 mm.
Even if the thickness of “a” is 0.6 mm, the maximum thickness becomes close to 2 mm if the resin portion 128b is lined. Further, the powder is easily attached to the resin parts 127b and 128b due to the influence of static electricity or the like.
When 28b is large, the contact portion with the powder is inevitably increased, and a large amount of the powder adheres to the rotating plates 127 and 128, which adversely affects the division accuracy.

The present invention has been made in view of the above circumstances, and reduces the thickness of a rotary plate, reduces the contact portion with a powdered resin portion, and suppresses the adhesion of powder to the rotary plate. It is an object of the present invention to provide a scraping-out device that improves the accuracy of dividing a powdered drug and facilitates maintenance, and a packaging machine having the same.

[0013]

According to the first aspect of the present invention,
The powdered medicine distributed on the turntable of the packaging machine is divided into a predetermined interval by a pair of rotating plates rotatable about an axis in a direction along a tangential direction of the turntable, and the powdered medicine within this range is In a scraping device that is provided between a pair of rotating plates and rakes and scrapes with a scraping claw that rotates integrally, at least one of the pair of rotating plates is sandwiched between a pair of metal plate bodies and a resin plate body. It is characterized by being constituted.

[0014] With this configuration, the resin portion can be firmly fixed to the metal plate. In other words, when the rotating plate lined with the resin part comes into contact with the turntable, the reaction force becomes a force to separate the resin part from the metal plate in the direction of the rotation center. There is a risk of peeling from the metal plate. However, if the resin plate is sandwiched between a pair of metal plates, the adhesive strength between the metal plate and the resin plate can be increased, so that the resin portion is a turntable. Even if it abuts, the possibility of separation due to the reaction force can be substantially eliminated. Further, since the size of the resin portion is not increased, the thickness of the entire rotating plate can be reduced.

According to a second aspect of the present invention, in the scraping device according to the first aspect, the resin plate has a uniform plate thickness over the entire area thereof, and It has a protruding portion protruding from the peripheral edge.

[0016] With this configuration, only the protruding portion thinner than the plate thickness of the rotary plate becomes the resin portion that comes into contact with the powder, so that the surface area of the resin portion that comes into contact with the powder can be minimized. In addition, the amount of powder adhering to the rotating plate can be suppressed.

The invention according to claim 3 is a packaging machine,
A scraping device according to claim 1 or 2 is provided.

By adopting such a configuration, it is possible to improve the accuracy of dividing the powder, and to obtain a packaging machine in which the powder hardly adheres to the rotating plate.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a scraping device according to the present invention and a packaging machine provided with the same will be described below with reference to FIGS. In this embodiment, since the components of the packaging machine other than the scraping device are the same as those of the packaging machine shown in the conventional example, the same reference numerals are given to these components, and the detailed description thereof will be omitted. Omitted.

The scraping device B includes a rotor arm 1 and a rotor 1 rotatably supported at the tip of the rotor arm 1.
0. The scraping device B is supported on the packing machine main body A at the base end side of the rotor arm 1 so as to be vertically rotatable (not shown), and is rotated by a driving source (not shown).

As shown in FIG. 3, the rotor 10 includes a flange hub 2, a disk (rotating plate) 3, a split blade 4,
It is composed of a partition plate (rotating plate) 5 and a stopper 6.
These rotate integrally around the axis O.

The flange hub 2 is rotatably supported by the rotor arm 1, and is integrally formed with a flange portion 21, a body portion 22, and a screw portion 23. The flange hub 2 is connected to a drive source (not shown) on the rotor arm 1 side, and is rotated around the axis O by the drive source. The flange portion 21 is to which the disk 3 is attached, and has a projection 24 that engages with the engagement hole 34 of the disk 3. The torso 22 includes a flange 21
Projecting in the direction of the axis O from which the split blade 4 is mounted. At the tip of the body 22,
Engagement hole 44 of split blade 4 and engagement hole 54 of partition plate 5
Are formed with the projections 25 which engage with the respective ones. Also,
A screw 2 projecting in the direction of the axis O is provided at the tip of the body 22.
3 are formed. The screw portion 23 is screwed with a female screw portion 61 formed on the stopper 6.

The disk 3 is formed by sandwiching a resin plate 32 between metal plates 31a and 31b, and has an insertion hole 33 formed at the center so that the body 22 of the flange hub 2 can be inserted. . Also, the flange portion 21 of the flange hub 2
An engagement hole 34 that engages with the projection 24 is formed so as to be unable to rotate relative to the flange hub 2 when attached to the flange hub 2. The metal plate 31a and the metal plate 31b have substantially the same disk shape in size and shape.
The resin plate 32 is made of an elastic body such as silicon rubber,
It has a uniform plate thickness over the entire area and has a disk shape similar to the metal plates 31a and 31b.
The size is slightly larger. That is, the metal plate 31
a, 31b, the metal plates 31a, 3b
A protruding portion 32a protruding from the peripheral portion of 1b is formed. The protruding portion 32a elastically comes into contact with the annular groove 111 of the turntable 101 at the time of dispensing the powder. When the rotor 10 rotates, the annular groove 111 is formed.
Slides with respect to Further, the protrusion length of the protrusion 32a must be set to a length that does not damage the annular groove 111 while minimizing the adhesion of the powdered medicine to the disc 3, and is 0.5 mm to 1 mm. The degree is preferred.

It is desirable that the disk 3 be as thin as possible in order to improve the accuracy of dividing the powder. However, when the powder is sent to the position of the scraping device B by intermittently operating the turntable 101 at the time of dispensing the powder, the powder must be dammed, and the pressure due to the powder is applied in the thickness direction at this time. . Therefore, it is necessary to reduce the thickness within a range having a thickness enough to withstand such pressure. For this purpose, the thickness of the disk 3 is approximately 1.5 m.
m, the thickness of each of the metal plates 31a and 31b is preferably about 0.4 mm, and the thickness of the resin plate 32 is preferably about 0.7 mm.

The dividing blade 4 has a cylindrical shaft portion 41 and a scraping claw 42 protruding outside the shaft portion 41.
It has. The shaft 41 is attached to the flange hub 2 so as to cover the body 22. An insertion hole 43 through which the screw portion 23 of the flange hub 2 is inserted and an engagement hole 44 through which the projection 25 is inserted are formed at the end of the shaft core portion 41 opposite to the flange hub 2. .
When the shaft core 41 is attached to the body 22, the protrusion 2
The engagement between the insertion hole 5 and the insertion hole 44 prevents the split blade 4 from rotating relative to the flange hub 2. The scraping claw 42 rotates together with the shaft core 41 to scrape the powder. Most of the scraping claw 42 is made of metal, but the tip portion, that is, the portion that comes into contact with the annular groove 111 is made of resin so as not to damage the annular groove 111.

The partition plate 5, as shown in FIG.
A resin plate 52 is sandwiched between 1a and 51b. This partition plate 5 has the same configuration as the disk 3,
When the turntable 101 is operated intermittently, it has a key-claw-like shape that covers only the vicinity of the scraping claw 42 in order to receive the powder into the lower part of the dividing blade 4.
The metal plate 51a and the metal plate 51b have substantially the same shape in both size and shape. The resin plate 52 is made of an elastic material such as silicon rubber and has a uniform plate thickness over the entire area, and has a disk shape similar to the metal plates 51a and 51b. It is slightly larger. That is, when sandwiched between the metal plates 51a and 51b, a protruding portion 52a that protrudes from the peripheral edge of the metal plates 51a and 51b is formed. The protruding portion 52a elastically comes into contact with the annular groove 111 of the turntable at the time of dispensing the powder, and slides on the annular groove 111 when the rotor 10 rotates. Further, the projection length of the projection portion 52a must be set to a length that does not damage the annular groove 111 while minimizing the adhesion of the powdered medicine to the partition plate 5, and is 0.5 mm to 1 m.
m is preferable.

It is desirable that the partition plate 5 be as thin as possible in order to improve the accuracy of dividing the powder. Further, since the partition plate 5 does not block the powder like the disk 3, The thickness can be made smaller than that of Therefore, the thickness of the partition plate 5 is preferably about 1 mm, and the thickness of each of the metal plates 51a and 51b is preferably about 0.3 mm, and the thickness of the resin plate 52 is preferably about 0.4 mm.

As shown in FIG. 1, the stopper 6 has a female screw portion 61 at the center thereof, and the female screw portion 61 and the screw portion 23 of the flange hub 21 are screwed and fastened to form a flange. The hub 2, the disk 3, the split blade 4, and the partition plate 5 are integrated.

The scraping device B is provided in the packaging machine main body A shown in FIGS. 6 and 7, and when the powdering operation is performed, the protrusion 32a of the disk 3 and the protrusion 5 of the partition plate 5 are used.
2a elastically contacts the annular groove 111, and when the rotor 10 rotates, the protrusion 32a and the protrusion 52a slide to scrape out the powder. Turn table 101 to partition plate 5
When a predetermined angle is intermittently operated from the side toward the disk 3 side, the powdered medicine on the annular groove 111 sent to the lower side of the rotor 10 is blocked by the disk 3 and
The powdered medicine on the lower side is always a fixed amount. By rotating the rotor 10 from the inner peripheral side to the outer peripheral side, that is, in the R direction in FIG. The scraped powder is scraped off by the hopper 4 and the unsealed packing paper 1
15 on which the powdered medicine is placed.
Are sent to a bag binding machine 117 where they are fused and individually packaged to produce a packaged powder 118. As described above, the intermittent operation of the turntable 101 and the intermittent operation of the rotor 10 are repeated, so that the powdered medicine on the annular groove 111 is sequentially divided and quantitatively divided.

In the scraping device B according to the present embodiment, the disk 3 is constituted by sandwiching the resin plate 32 between the metal plates 31a and 31b, and the resin plate 52 is sandwiched between the metal plates 51a and 51b for partitioning. Since the plate 5 is configured, the resin portion can be firmly fixed to the metal plate. Therefore, there is almost no possibility that the resin portion is peeled off from the metal plate due to use over time or an unexpected accident, and the reliability of the packaging machine can be improved. Further, the plate thickness of the disk 3 and the partition plate 5 of the rotor 10 can be reduced. That is, the metal plates 31a and 31b and the metal plate 51
a, 51b are each set to the conventional metal plate 127a.
If the thickness of the rotary plate is set to half the thickness of the rotary plate, the strength of the rotary plate in the thickness direction is maintained as in the related art, but the resin portion does not protrude in the thickness direction. Becomes thinner. Therefore, the division accuracy of the powdered medicine is improved, and the powdered medicine which is accurately dispensed and packaged can be obtained.
Further, the thicknesses of the resin plate 32 and the resin plate 52 are uniform over the entire area, and the protruding portions 3 protruding from the peripheral edges of the metal plates 31a and 31b and the metal plates 51a and 51b, respectively.
2a and 52a. Therefore, the protruding portions 32a, 52a thinner than the plate thicknesses of the disc 3 and the partition plate 5.
Only the resin part that comes into contact with the powdered medicine can minimize the surface area of the resin part that comes into contact with the powdered medicine, and the amount of the powdered medicine adhering to the disk 3 and the partition plate 5 can be suppressed. As a result, the accuracy of dividing the powder is further improved, and the frequency of the cleaning operation for removing the powder adhered to the scraping device B can be reduced, and maintenance can be facilitated.

[0031]

As described above, the scraping device according to the present invention and the packaging machine equipped with the same have the above-described configuration, so that the thickness of the rotating plate can be reduced.
It is possible to provide a scraping device that reduces the contact portion of the powder with the powdered resin portion to reduce the adhesion of the powder to the rotating plate, improves the dividing accuracy of the powder, and facilitates maintenance, and a packaging machine having the same. .

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a scraping device according to the present invention, and is an exploded perspective view of a rotor portion.

FIG. 2 is a view showing a partition plate in FIG. 1;
(A) is a side view, (b) is an II line cross-sectional view in (a).

FIG. 3 is a partial cross-sectional side view showing a rotor portion of the scraping device shown in FIG. 1;

FIG. 4 is a view showing an example of a conventional partition plate;
(A) is a side view, (b) is a sectional view taken along the line II-II in (a).

FIG. 5 is a partial sectional side view showing an example of a rotor portion of a conventional scraping device.

FIG. 6 is a side cross-sectional view for explaining a configuration of a general packaging machine, and is a diagram showing a state where powder is distributed on a turntable of the packaging machine.

FIG. 7 is a side sectional view for explaining a configuration of a general packaging machine, and is a view showing a state in which powdered medicine is packaged.

[Explanation of symbols]

 B Scrape-out device O Axis 3 Disk (rotating plate) 31a, 31b Metal plate (metal plate) 32 Resin plate (resin plate) 32a Projecting portion 42 Scrape claw 5 Partition plate (rotating plate) 51a, 51b Metal plate (metal plate) 52 Resin plate (resin plate) 52a Projecting portion 101 Turntable

Claims (3)

[Claims] 1. A powdered medicine distributed on a turntable of a packaging machine is divided at a predetermined interval by a pair of rotary plates rotatable around an axis in a direction tangential to the turntable. In a scraping device that scoops and dispenses powdered medicine by a scraping claw that is provided between the pair of rotating plates and integrally rotates, at least one of the pair of rotating plates is made of a resin made of a pair of metal plates. A scraping device characterized in that the plate body is sandwiched therebetween. 2. The resin plate has a uniform thickness over its entire area, and has a protrusion projecting from a peripheral edge of the metal plate. The scraping device according to claim 1. 3. A packaging machine comprising the scraping device according to claim 1 or 2.