JP5949756B2 - Static electricity removing member and static electricity removing method in tablet feeder - Google Patents

Description

  The present invention relates to a static eliminating member and a static eliminating member of a tablet feeder that is installed in a tablet packaging machine that divides one tablet, a tablet counting machine that counts tablets, etc. It is about the method. Here, the tablet is used in a concept including a capsule.

  Tablets that have been used in hospital pharmacies and dispensing pharmacies, and tablet counting machines that are used to count tablets and pack them into various containers, discharge tablets from the outlet while stirring the tablets. Has a feeder.

  For example, as shown in FIG. 7, a tablet feeder of a tablet packaging machine includes a cassette container 1 that stores tablets A and a rotor 2 that discharges tablets in the cassette container 1 (Patent Documents 1 and 2). .

  The tablets in the cassette container 1 are aligned by the tablet array board 3 of the rotor 2 while being agitated in the cassette container 1 by the rotor 2, and a required quantity is discharged from the tablet discharge hole 4 one by one.

  In the tablet counting machine, as shown in FIG. 8, the tablets in the cassette container 5 are aligned in the tablet alignment groove 8 of the rotor 6 while being stirred in the cassette container 5 by the rotor 6, Each tablet is discharged while counting the required quantity.

Japanese Utility Model Publication No. 7-4302 JP-A-9-39910

  By the way, since the cassette containers 1 and 5 and the rotors 2 and 6 are made of plastic (polyacetal resin, polyethylene terephthalate, polystyrene, and the like), when the tablets A are mixed therein, the tablets A or the tablets A and Friction is generated between the cassette containers 1 and 5 and the rotors 2 and 6, and static electricity is generated by the friction. When the tablet A is charged with static electricity, the tablet A is adsorbed to the inner surfaces of the cassette containers 1 and 5, the tablet arrangement board 3 of the rotor 2, or the tablet alignment groove 8 of the rotor 6 by electrostatic force, which may hinder the discharge of the tablet A. There is a possibility of coming out.

  In particular, static electricity is likely to occur during dry seasons in winter.

  Therefore, the present invention provides a static electricity removing member and a static electricity removing method that can easily remove charges charged in a cassette container or a tablet even if static electricity is generated by friction between the tablet and the cassette container or the rotor. Therefore, it is an object to prevent the tablet from being discharged due to static electricity.

  In order to solve the above-mentioned problems, the static eliminating member according to the present invention is made of a discharge body that is difficult to be frictionally charged with metal or the like and that has a large number of pointed protrusions, and is housed together with a tablet in a cassette container. It is.

  When the apex convex portion of the discharge body comes into contact with the tablet, the cassette container, and the rotor, the triboelectric charge is sharply discharged by the apex convex portion, and static electricity is removed.

  Therefore, it is possible to prevent the tablets from being adsorbed on the inner surface of the cassette container, the tablet array board of the rotor, or the tablet alignment groove due to static electricity, thereby causing troubles in discharging the tablets.

  As the above discharge body, a metal lump having a large number of pointed protrusions on the surface by metal spraying, a large number of metal wire lumps having needle-shaped pointed protrusions at the tip, conductive properties such as thin metal wires and carbon fibers What made the fiber into a brush shape etc. can be used.

  The lump of metal or lump of metal wire constituting the discharge body is preferably formed in a spherical shape so that it rotates or moves together with the tablet in the cassette container so that the number of contact between the tip protrusion and the tablet increases.

  However, when the tablet is easy to collapse, it is desirable to prevent the metal lump and metal wire lump constituting the discharge body from rolling in the cassette container. In this case, the location where the discharge body is fixed may be, for example, the surface of the rotor, a part of the inner wall surface of the cassette, or a plurality of locations.

  Further, the size is preferably larger than the tablet discharge hole so as not to enter the tablet discharge hole of the rotor, but if it is too large, it is difficult to roll in the cassette container and the tablet may be damaged. Therefore, it is desirable that the size is slightly larger than the tablet discharge hole of the rotor.

  Further, when the metal lump or metal wire lump is small, a string may be attached to the metal lump or metal wire lump so that it is not accidentally discharged from the tablet discharge hole of the rotor.

  According to this invention, static electricity generated by friction with the cassette container and the rotor is arranged by disposing a discharge body having a large number of pointed protrusions, which is difficult to be frictionally charged with metal or the like, in the cassette container that accommodates the tablet. Since it can be easily removed by point discharge, it is possible to prevent tablet discharge failure due to static electricity, and it is particularly effective in the winter when it is easy to dry.

It is a vertical side view of the tablet feeder of the tablet packaging machine which has arrange | positioned the discharge body of 1st Embodiment which concerns on this invention in a cassette container. It is a vertical side view of the tablet feeder of the tablet packaging machine which has arrange | positioned the discharge body of 2nd Embodiment which concerns on this invention in a cassette container. It is a vertical side view of the tablet feeder of the tablet packaging machine which has arrange | positioned the discharge body of 3rd Embodiment which concerns on this invention in a cassette container. It is a top view of the tablet feeder of the vial machine which has arrange | positioned the discharge body of 4th Embodiment which concerns on this invention in a cassette container. It is an enlarged view of the discharge body in 1st Embodiment of FIG. It is an enlarged view of the discharge body in 2nd Embodiment of FIG. It is a vertical side view of the tablet feeder in the conventional tablet packaging machine. It is a top view of the tablet feeder in the conventional vial machine.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The static eliminating member according to the present invention comprises a discharge body 9 that is difficult to be frictionally charged with metal or the like and that has a large number of pointed protrusions.

  For example, the discharge body 9 may be formed by spraying aluminum or titanium on the surface of a sphere made of stainless steel or aluminum and providing a large number of fine piercing point projections 10 made of aluminum or titanium.

  The stab-like pointed convex portion 10 is represented in a dot shape in FIGS.

  The embodiment shown in FIG. 1 is an example in which a spherical discharge body 9 is housed together with the tablet A in the cassette container 1 of the tablet packaging machine.

  As shown in FIG. 1, the spherical discharge body 9 is formed to have a size slightly larger than the tablet arrangement board 3 of the rotor 2, and rolls together with the tablet A by the rotation of the rotor 2. Alternatively, the tablet 2 and the cassette container 1 or the rotor 2 are effectively brought into contact with the rotor 2 to discharge the charged charges to the stab-like pointed protrusions 10, and static electricity generated by friction is removed.

  In the second embodiment shown in FIG. 2, the size of the spherical electric discharge body 9 is made smaller than that in the embodiment shown in FIG. 1, suspended on the cassette container 1 by the thread 11, and jumped by the rotation of the rotor 2. The tablet A comes into contact with the tablet A, the cassette container 1 or the rotor 2, and the charged electric charge is discharged to the piercing pointed convex portion 10.

  FIG. 6 shows an enlarged view of the spherical discharge body 9 suspended from the cassette container 1 by the thread 11 in the second embodiment.

  Next, in the third embodiment shown in FIG. 3, a discharge body 9 in which a thin metal wire 12 is made into a brush shape is disposed in the cassette container 1, and the tip of the thin metal wire 12 and the charged tablet A are brought into contact with each other. Thus, a static discharge is generated by generating a tip discharge between the tip of the thin metal wire 12 and the charged tablet A.

  Next, the embodiment shown in FIG. 4 is an example in which a spherical discharge body 9 is accommodated together with the tablet A in the cassette container 5 of the tablet counting machine.

  As shown in FIG. 4, the spherical electric discharge body 9 is formed in a size slightly larger than the tablet alignment groove 8 of the rotor 6, and rolls together with the tablet A by the rotation of the rotor 6. Alternatively, the tablet 6 is effectively brought into contact with the tablet A, and the electric charges charged in the tablet A and the cassette container 5 or the rotor 6 are discharged to the stab-like pointed protrusions 10, and static electricity generated by friction is removed.

(Experimental example)
In the cassette container 1 shown in FIG. 1, a discharge body 9 having fine pin-like pointed protrusions 10 is accommodated on the surface of a sphere made of stainless steel or aluminum by spraying titanium or aluminum, and together with the tablet A, the rotor 2 When the tablet was rotated for 90 seconds, the amount of static electricity charged on the tablet A, the eight wall surfaces of the cassette container 1 around the rotor 2 and the amount of static electricity on the upper surface of the rotor 2 were measured. The amount of static electricity was much lower when the discharge body 9 was housed at each measurement location than when the discharge body 9 was not housed.

  The static electricity generation experiment was performed in a thermostatic chamber at a temperature of 23 ° C. and a humidity of 10%, and the tablets were used using 25 mg of the trade name Grammar Reel, which is one of the chemicals that are easily charged with static electricity. The diameter of the sphere of stainless steel (SUS304) is 12.7 mm and the weight is 8.2 g. The aluminum sphere has a diameter of 12.7 mm and a weight of 2.7 g. Stainless steel spheres with aluminum sprayed are SUS sphere Al sprayed, stainless steel spheres with titanium sprayed, SUS sphere Ti sprayed, aluminum spheres with aluminum sprayed, Al sphere Al sprayed, aluminum sphere with titanium sprayed The thermal sprays are labeled as Al sphere Ti thermal spray.

A Tablet 1, 5 Cassette container 2, 6 Rotor 3 Tablet array board 4, 7 Tablet discharge hole 8 Tablet alignment groove 9 Discharge body 10 Pointed convex part 11 Thread 12 Metal wire

Claims (3)

  A discharge body, such as metal, which is difficult to be triboelectrically charged and has a large number of pointed protrusions is suspended and supported in the cassette container by a thread, and is housed together with the tablet in the cassette container of the tablet feeder to remove the triboelectrically charged charge. Static electricity removal member.   A discharge body that is difficult to be frictionally charged, such as metal, and that has a large number of pointed protrusions is housed in a cassette container of a tablet feeder together with a tablet, and the rotor in the cassette container rotates, whereby the discharge body is placed in the cassette. Static electricity removal member that removes the frictionally charged charge that rolls in The static electricity removing member according to claim 2 , wherein the discharge body is a sphere.

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