JP2010247841A5 - - Google Patents

Description

Powder scraping device

  TECHNICAL FIELD The present invention relates to a powder scraping device for scraping a powder supplied into an annular groove of a distribution tray by a certain amount, and more particularly to a powder scraping device capable of attaching and removing a scraping plate with one touch. .

  Conventionally, as a powder scraping device, for example, the powder stored in an annular groove with a circular arc cross section formed on the outer peripheral portion of the upper surface of the distribution tray, while moving the rotating plate relatively along the annular groove and scraping it, The thing of the structure provided with the powdered-scraping apparatus which scrapes out only one package by the scraping board attached to the boss | hub part which protrudes from this rotary plate is well-known (for example, refer patent document 1 and 2).

  However, in the powder scraping device, it is inevitable that the powder adheres to the rotating plate or the scraping plate, and it is necessary to newly provide a cleaning device in order to remove the adhering powder. Further, even with this cleaning device, it is difficult to completely remove the powder adhering to the boss portion. Therefore, the powder scraping device must be periodically disassembled and cleaned.

  Therefore, a powder scraping device in which a scraping plate is integrally provided on the rotating plate to eliminate the boss portion and prevent the powder from adhering has been put into practical use (Patent Document 3).

  As described above, in the powder scraping device, it is important to make it difficult for the powder to adhere. On the other hand, it is necessary that the rotating plate can be easily attached and detached for cleaning or the like. In the conventional powder scraping device, since the rotating plate is screwed, when attaching and detaching the rotating plate, the screw is removed and tightened using a dedicated tool, which is complicated and time-consuming work. .

Japanese Examined Patent Publication No. 7-10684 Japanese Patent No. 3098742 Japanese Patent No. 4249126

  Therefore, the present invention has an object to provide a powder scraping device that has no screws or the like, can easily and quickly attach and detach the rotating plate without using a tool, and can prevent adhesion of powder. And

As means for solving the above problems, the present invention provides:
A powder scraping device that scrapes the powder stored in the annular groove on the outer periphery of the upper surface of the distribution dish,
A mounting base provided at the tip of the arm so as to be rotationally driven;
A circular rotating plate attached to the mounting base and rotatably provided integrally with the mounting base, and an outer peripheral edge along the inner surface of the annular groove of the distribution tray;
A scraping plate that is provided on the rotating plate and scrapes the powder contained in the annular groove of the distribution tray;
A powder scraping device comprising:
The mounting base is provided with a mounting surface, a projecting portion, and at least one mounting pin that is movable substantially parallel to the mounting surface and biased in one direction,
The rotating plate is provided with a mounting hole into which the protruding portion is fitted, and a positioning hole into which the mounting pin is fitted,
The mounting pin is provided with an inclined surface that contacts one edge of the positioning hole and a recess that engages with one edge of the positioning hole.

According to the above means, when the rotating plate is pressed against the mounting base by aligning the mounting hole and positioning hole of the rotating plate with the protruding portion of the mounting base and the mounting pin, respectively, the mounting hole of the rotating plate becomes the protruding portion of the mounting base. The edge of the positioning hole of the rotating plate slides on the slope of the mounting pin and engages with the recess, whereby the rotating plate is attached to the mounting base. When the mounting pin is moved against the biasing force from this mounted state, the engagement between the edge of the positioning hole of the rotating plate and the concave portion of the mounting pin is released, and the rotating plate can be removed from the mounting base.

  It is preferable that a side surface of the mounting pin that forms a recess is a tapered surface that widens toward the opening of the recess, and an edge of the positioning hole of the rotating plate is in contact with the tapered surface. Thereby, the clearance gap between the recessed part of a mounting pin and the edge of the positioning hole of a rotating plate decreases, and it can prevent that a powder medicine accumulates in this clearance gap.

  The mounting pin preferably has a conical shape, which makes it difficult for powder to adhere to the mounting pin.

  It is preferable that the mounting pin has a flat portion in which a part of the skirt portion of the cone is cut, and the flat portion is in surface contact with a longitudinal edge of the positioning hole. By doing in this way, a shift | offset | difference of a mounting pin can be prevented and it can prevent that a powdered medicine accumulates between the cutting part of a mounting pin and the edge of the positioning hole of a rotating plate.

It is preferable that the protrusion has a base portion having a vertical surface that rises perpendicularly from the attachment surface, and the height of the base portion is higher than the thickness of the edge of the attachment hole of the scraping plate. Thereby, engagement between the attachment hole of a rotating plate and the protrusion part of an attachment base can be made easy. Moreover, when the height of the base is lower than the thickness of the edge of the mounting hole of the scraping plate, a recess is formed, and the powder accumulates in this recess.

  It is preferable that the shape of the protruding portion viewed from a direction perpendicular to the mounting surface of the mounting base is asymmetric with respect to a straight line extending from the center of the protruding portion and the center of the mounting pin. For example, it is preferable that the protrusion is an odd number of regular polygons, whereby the mounting position in the circumferential direction of the rotating plate with respect to the mounting base is determined, and it is possible to prevent the rotating plate from being attached in an unintended direction. it can.

The mounting pin is preferably composed of two mounting pins provided on both sides of the protruding portion, and is biased outward in the radial direction.
Or the said mounting pin consists of two mounting pins provided in the position eccentric from the said protrusion part, and may be urged | biased toward the radial direction outer side.
In this way, the rotating plate can be removed simply by putting the thumb and forefinger on the two mounting pins and bringing them closer to each other.

The mounting pin may be a single mounting pin provided on one side of the protrusion, and may be biased outward in the radial direction. If it does in this way, a rotation board can be removed only by putting a thumb and an index finger on a mounting pin and a projection part, and bringing them close to each other.
In this case, the rotating plate can be stabilized by providing a slope on which the edge of the mounting hole contacts and a concave portion on which the edge of the mounting hole engages on the side opposite to the side facing the mounting pin of the protrusion. Can be attached.

The mounting pin may be a single mounting pin provided on one side of the projecting portion, and may be biased radially inward. If it does in this way, a rotation board can be removed only by putting a thumb and a forefinger on the edge of a mounting pin and a rotation board, and bringing them close to each other.
In this case, the rotating plate can be stabilized by providing a slope on which the edge of the mounting hole contacts and a concave portion on which the edge of the mounting hole engages on the side opposite to the side facing the mounting pin of the protrusion. Can be attached.

According to the present invention, the mounting hole and positioning hole of the rotating plate can be mounted by simply pressing the rotating plate against the mounting base by aligning the mounting hole with the protruding portion of the mounting base and the mounting pin, respectively. Since it can be removed simply by moving it against it, the rotating plate can be attached and detached easily and quickly without using screws or tools, and there is no risk of parts being lost.
Moreover, although the protrusion part and the mounting pin protrude from the rotary plate, since these are relatively small, it is possible to prevent the powder from adhering.

Schematic of powder packaging device. The perspective view of a powder scraping apparatus. The perspective view which shows the state which removed the rotating plate of the powder scraping apparatus of FIG. The surface view (a) of an attachment base, and the enlarged view (b) of a mounting pin and its attachment part. The back view (a) of an attachment base, and the enlarged view (b) of a mounting pin and its attachment part. The partially broken expanded side view of a mounting base. The surface figure (a) of a rotary plate, and its II sectional view (b). The side view which shows the condition which attaches a rotating plate to an attachment base in order. The perspective view which shows the modification of a powder scraping apparatus. The perspective view which shows the other modification of a powder scraping apparatus. The perspective view which shows the further another modification of a powder scraping apparatus. The perspective view of the powder scraping apparatus which can attach or detach a rotation board to an attachment base by two touches. The perspective view of the other powder scraping apparatus which can attach or detach a rotation board to an attachment base by two-touch.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1: shows the powder packaging apparatus provided with the powder scraping apparatus 3 which concerns on embodiment of this invention. This powder packaging device supplies powder to the distribution tray 2 from the powder supply device 1, scrapes the powder one by one with the powder scraping device 3, and then packs it with the packaging device 4. . The distribution tray 2 is formed with an annular groove 5 having an arc cross section in the outer peripheral portion of the upper surface, and rotates in one direction by driving a motor (not shown).

  As shown in FIG. 3, the powder scraping device 3 includes an arm 6, a mounting base 7, and a rotating plate 8.

  One end of the arm 6 is rotatably attached to the apparatus main body, and the other end is positioned above the distribution tray 2. The arm 6 is lowered by a driving means (not shown) during the scraping operation, and is raised at other times.

  The mounting base 7 is made of a stainless steel disk, and is attached to the tip of the arm 6 so as to be rotationally driven by a driving means (not shown). The rotation axis x of the mounting base 7 is arranged parallel to the tangent line of the annular groove 5 of the distribution tray 2. At the center of the surface of the mounting base 7, a projecting portion 11 comprising a triangular base portion 9 composed of three vertical surfaces projecting perpendicularly from the surface and a triangular pyramid portion 10 whose head is cut is attached. . The height of the base 9 is higher than the thickness of the rotating plate 8 described later. The size of the triangular pyramid 10 is such that, for example, one side of the bottom surface is 12 mm, the height is 4 mm, the angle is 20 °, and the powder is difficult to adhere. The protrusion 11 is not limited to a triangle, and may be an odd regular polygon such as a pentagon. By doing so, the circumferential position of the rotating plate 8 attached to the attachment base 7, that is, the position of the scraping plate 30 described later is determined.

  Mounting pins 12 are attached to symmetrical positions on both sides of the protrusion 11 on the surface of the mounting base 7. The mounting pin 12 is generally composed of a conical portion 13 whose head is cut, a shaft portion 14 protruding from the bottom surface of the conical portion 13, and a slider portion 15 provided at the tip of the shaft portion 14. . The cone portion 13 may be of a size that can be hooked by a finger. Specifically, for example, the diameter of the bottom surface is 8 mm, the height is 6 mm, and the inclined angle of the inclined surface 13a is 70 ° so that the powder does not easily adhere. It has become. Two portions of the skirt portion of the conical portion 13 that are separated from each other by 180 ° are excised to form a flat portion 16. In addition, a concave portion 17 serving as an undercut is formed at a radially outer position away from the flat portion 16 by 90 °. The side surface of the recess 17 is a tapered surface 18 so as to expand toward the opening of the recess 17. The shaft portion 14 has a circular cross section smaller than the bottom surface of the conical portion 13. The slider portion 15 is formed in a rectangular plate shape, and a recess 20 into which a spring 19 is fitted is formed at one end.

  A U-shaped notch 21 into which the shaft portion 14 of the mounting pin 12 is slidably fitted on the back surface of the mounting base 7, and a slider portion 15 of the mounting pin 12 is slidable outside the notch 21. A slider housing groove 22 to be inserted and a spring housing groove 23 that is continuous with the slider housing groove 22 and accommodates the spring 19 are formed. Then, the spring 19 is accommodated in the spring accommodating groove 23, the shaft portion 14 of the mounting pin 12 is inserted from the opening side of the notch 21, the slider portion 15 is accommodated in the slider accommodating groove 22, and the spring accommodating groove 23 and the slider are accommodated. A stop plate 24 is attached with screws so as to cover the accommodation groove 22. Thereby, the slider part 15 is urged | biased toward the radial direction outer side of the receiving base 7. FIG. The stopper plate 24 is a rectangular flat plate-shaped base 25 that covers the notch 21 and the slider receiving groove 22 of the mounting base 7, and is bent 90 ° from one end of the base 25. It consists of a bent portion 26 that covers the opening of the groove 22. As shown in FIG. 6, the base portion 25 of the stop plate 24 is slightly bent so that the direction opposite to the bending direction of the bent portion 26 is a mountain, as shown in FIG. 6. For this reason, when screwing to the mounting base 7, it is mounted while being elastically deformed, so that the bent portion 26 and the base 25 in the vicinity thereof are in close contact with the mounting base 7, so that deformation is caused by the urging force of the spring 19. Therefore, there is no gap between the bent portion 26 and the edge of the mounting base 7 so that the powder enters.

The rotating plate 8 is made of a stainless steel disc having the same radius of curvature as the circular arc of the annular groove 5 of the distribution tray 2, and an elastic edge portion 27 such as silicon is integrated around the entire outer periphery. Yes. The central portion of the rotating plate 8 mounting holes 28 of the triangular projecting portion 11 of the mounting base 7 is engaged is formed, the both sides of the mounting holes 28 are formed positioning holes 29 having a length hole Yes. A scraping plate 30 is integrally provided on the surface of the rotary plate 8. The scraping plate 30 is formed by bending a plate-like body such as stainless steel to form a scraping portion 31 and a partitioning portion 32. An elastic piece 33 such as silicon is integrated at the tip of the scraping portion 31. A part of the outer edge of the partition portion 32 is formed in an arc shape along the annular groove 5 of the distribution tray 2.

  The attaching / detaching operation of the powder scraping device 3 having the above-described configuration will be described.

First, in order to attach the rotating plate 8 to the mounting base 7, as shown in FIG. 8A, the mounting hole 28 and the positioning hole 29 of the rotating plate 8 are respectively provided with the protruding portion 11 and the mounting pin 12 of the mounting base 7. The rotating plate 8 is pressed toward the mounting base 7 so as to coincide with. Then, as shown in FIG. 8 (b), the edge of the positioning hole 29 of the rotating plate 8 abuts against the inclined surface 13 a of the mounting pin 12, and the mounting pin 12 resists the urging force of the spring 19 in the center direction. While being moved, the inclined surface 13a of the mounting pin 12 is slid and inserted into the recess 17 as shown in FIG. At the same time, the mounting hole 28 of the rotating plate 8 engages with the protruding portion 11 of the mounting base 7.

In the mounted state of the rotating plate 8, the edge of the positioning hole 29 of the rotating plate 8 comes into contact with the tapered surface 18 of the recess 17 of the mounting pin 12 and stops. Therefore, the clearance gap between the rotating plate 8 and the recessed part 17 of the mounting pin 12 is narrow, and it can prevent that a powder medicine approachs here.
Further, since the height of the base 9 of the protruding portion 11 of the mounting base 7 is higher than the thickness of the rotating plate 8, the rotating plate 8 reliably engages with the protruding portion 11 of the mounting base 7.

  In order to remove the rotating plate 8 for cleaning or the like, it is only necessary to place the thumb and forefinger on the two mounting pins 12 and move the mounting pins 12 in directions approaching each other. Thereby, the concave portion 17 of the mounting pin 12 is detached from the edge of the positioning hole 29 of the rotating plate 8, and the rotating plate 8 is detached from the mounting base 7.

  In this way, the rotating plate 8 can be attached to the mounting base 7 with a single touch and can be detached from the mounting base 7 with a single touch, so that no special tool is required and screws are lost during the work. I don't have to.

  Then, the operation | movement of the powder packaging apparatus which consists of the said structure is demonstrated.

  First, the powder in the annular groove 5 is separated by lowering the arm 6 and pressing the rotating plate 8 against the annular groove 5 while the powder is evenly supplied to the annular groove 5 of the distribution tray 2. Since the elastic edge 29 made of silicon is integrated with the outer peripheral edge of the rotating plate 8, the powdered medicine in the annular groove 5 can be appropriately separated without damaging the distribution tray 2.

  Subsequently, after the distribution tray 2 is rotated by a predetermined angle, the rotating plate 8 is rotated by a driving device (not shown). Thereby, the powdered drug scraped by the rotating plate 8 is separated by one package by the scraping part 31 of the scraping plate 30, scraped from the distribution tray 2 by the scraping part 31, and packaged by the packaging device 4. Is done.

  The rotary plate 8 only has a scraping plate 30, a protruding portion 11 having a shape difficult to adhere powder, and a mounting pin 12, and there is no portion to which powder adheres due to the scraping operation. Therefore, the cleaner apparatus etc. which were conventionally required are unnecessary.

  In the said embodiment, although the mounting pin 12 was provided in the both sides of the protrusion part 11, it is not limited to this, It can also receive as shown to FIGS.

That is, as shown in FIG. 9, one mounting pin 12 is attached to one side of the projecting portion 11, and, as in FIG. 6, it is urged by a spring radially outward, and the three sides of the base portion 9 of the projecting portion 11 are Of these, the recess 11 a that engages with the edge of the mounting hole 28 of the rotating plate 8 is provided on the side opposite to the mounting pin 12. In this case, the rotation plate 8 may be removed by placing the thumb and forefinger on the protrusion 11 and the mounting pin 12 and moving the mounting pin 12 in a direction approaching the protrusion 11.

Further, as shown in FIG. 10, one mounting pin 12 attached to one side of the protruding portion 11 is urged in the opposite direction to FIG. 6, that is, radially inward, and among the three sides of the base portion 9 of the protruding portion 11. A recess 11 a that engages with the edge of the mounting hole 28 of the rotating plate 8 can also be provided on the side facing the mounting pin 12. In this case, the rotation plate 8 is removed by placing the thumb and index finger on the edge (indicated by point P) of the mounting pin 12 and the rotation plate 8 and moving the mounting pin 12 in a direction approaching the edge of the rotation plate 8. Good.

  Furthermore, as shown in FIG. 11, the two mounting pins 12 may be attached so as to face each other at a position eccentric from the protruding portion 11. The attaching / detaching operation of the rotating plate 8 in this case is the same as that in the above embodiment.

  Next, a powder scraping device that can attach and detach the rotating plate 8 to and from the mounting base 7 with two touch will be described.

12A, a rectangular protrusion 34 having the same height as the thickness of the rotary plate 8 is provided at the center of the mounting surface of the mounting base 7, and a rectangular knob 35 is provided at a predetermined angle on the protrusion 34. FIG. On the other hand, the rotary plate 8 is provided with a mounting hole 36 through which the knob portion 35 penetrates and matches the protruding portion 34. To attach the rotating plate 8 to the mounting base 7, as shown in FIG. 12 (b), the knob 35 is passed through the mounting hole 36 and the center hole 36 is engaged with the protruding portion 34. As shown in c), the knob 35 is rotated. Thereby, the balls urged by the springs built in both ends of the knob 35 are engaged with the positioning holes 37 of the rotating plate 8, and the rotating plate 8 is fixed. To remove the rotating plate 8, the reverse operation may be performed.

In FIG. 13A, a square protruding portion 38 having the same height as the thickness of the rotating plate 8 is provided at the center of the mounting surface of the mounting base 7, and a square knob 39 is formed on the protruding portion 38 by a predetermined angle. On the other hand, the rotary plate 8 is provided with a square mounting hole 40 through which the knob portion 39 passes. To mount the rotating plate 8 on the mounting base 7, as shown in FIG. 13 (b), through the knob 39 to the mounting hole 40, after engagement of the mounting hole 40 in the projecting portion 38, FIG. 13 ( As shown in c), the knob 39 is rotated while being pulled against the spring having a built-in knob 39. As a result, the spring built in the knob 39 is urged, and the corner of the knob 39 is brought into pressure contact with the edge of the mounting hole 40 of the rotary plate 8 so that the rotary plate 8 is fixed. To remove the rotating plate 8, the reverse operation may be performed.

DESCRIPTION OF SYMBOLS 2 Distribution tray 3 Powder scraping apparatus 5 Annular groove 6 Arm 7 Mounting base 8 Rotating plate 9 Base 11 Protruding part 12 Mounting pin 13a Slope 17 Recess 18 Tapered surface 28 Mounting hole 29 Positioning hole 30 Scraping plate

Claims (14)

A powder scraping device that scrapes a powder contained in an annular groove formed on the outer periphery of the upper surface of the distribution dish by a certain amount ,
A mounting base provided at the tip of the arm so as to be rotationally driven;
A circular rotating plate attached to the mounting base and rotatably provided integrally with the mounting base, and an outer peripheral edge along the inner surface of the annular groove of the distribution tray;
A scraping plate that is provided on the rotating plate and scrapes the powder contained in the annular groove of the distribution tray;
A powder scraping device comprising:
The mounting base is provided with a mounting surface, a projecting portion, and at least one mounting pin that is movable substantially parallel to the mounting surface and biased in one direction,
To the rotary plate, the mounting hole the protrusion is fitted match that, a positioning hole into which the mounting pin fits provided,
The powder scraping device, wherein the mounting pin is provided with an inclined surface that contacts one edge of the positioning hole and a recess that engages with one edge of the positioning hole.   The powder scraping device according to claim 1, wherein an edge of the positioning hole and a side surface of the concave portion are engaged in line contact. The side surface forming the concave portion of the mounting pin is formed by a tapered surface extending toward the opening of the concave portion,
The powder scraping device according to claim 2 , wherein an edge of a positioning hole of the rotating plate is in contact with the tapered surface.   The powder scraping device according to claim 1, wherein the mounting pin has a conical shape.   2. The mounting pin according to claim 1, wherein the mounting pin has a flat surface portion in which a part of a skirt portion of the cone is cut, and the flat surface portion is in surface contact with a longitudinal edge of the positioning hole. Powder scraping device. The said protrusion part has a base which has a vertical surface which stands | starts up perpendicularly | vertically from an attachment surface, The height of this base is higher than the thickness of the edge of the attachment hole of the said scraping board. Powder scraping device.   The shape of the protruding portion viewed from a direction perpendicular to the mounting surface of the mounting base is asymmetric with respect to a straight line extending from the center of the protruding portion and the center of the mounting pin. The powder scraping device according to claim 1. 8. The powder scraping device according to claim 7 , wherein the protrusion is an odd number of regular polygons.   The powder scraping device according to claim 1, wherein the mounting pin includes two mounting pins provided on both sides of the projecting portion, and is biased outward in the radial direction.   The powder scraping device according to claim 1, wherein the mounting pin includes two mounting pins provided at positions eccentric from the projecting portion, and is biased toward the radially outer side.   The powder scraping device according to claim 1, wherein the mounting pin includes one mounting pin provided on one side of the projecting portion, and is biased outward in the radial direction. On the opposite side of the mounting pin and the opposite sides of the protrusion, the inclined surface edge of the attachment hole comes into contact, according to claim 11 in which the edge of the mounting hole, characterized in that a and recesses to be engaged Powder scraping device.   The powder scraping device according to claim 1, wherein the mounting pin includes one mounting pin provided on one side of the projecting portion, and is biased radially inward. On the opposite side of the mounting pin and the opposite sides of the protrusion, the inclined surface edge of the attachment hole comes into contact, according to claim 13 in which the edge of the mounting hole, characterized in that a and recesses to be engaged Powder scraping device.