JPH0476841B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a method and an apparatus for filling tablets into pockets formed in a packaging film to be transported, and more particularly, to a method for filling tablets into pockets formed in a packaging film to be transported, and more particularly, to a method and an apparatus for filling tablets into pockets formed in a packaging film to be transported. The present invention relates to a shutter-type filling method and apparatus for controlling it with a shutter plate.

(b) Prior Art As methods for filling tablets into the pockets of a packaging film that is continuously transported, conventional methods include the rotor method, in which tablets are filled using a rotating rotor a, as shown in FIG. As shown in
There was a shutter type, in which a shutter plate c provided below the chute b was moved back and forth to fill the tank.

However, in the above case, when the tablet is broken, the powder falls one after another onto the packaging film, which not only tends to cause many packaging sheets to be defective, but also has the drawback that the filling position in the pocket may be misaligned. In addition, in the case of , the distance between the packaging film and the lower surface of the chute is relatively large because the shutter plate moves in and out between the packaging film and the lower end of the chute. Because of this, the tablets do not fit into the pocket correctly when filling at high speed, which limits the speed of filling.

(C) Problems to be Solved by the Invention One problem to be solved by the present invention is that in a tablet filling method, a shutter plate is made of a thin flexible material and its tip is brought into contact with the packaging film directly under the chute. The purpose of this invention is to reduce the distance between the lower end of the chute and the packaging film by making the packaging film substantially parallel to the film, thereby making it possible to speed up filling.

Another problem to be solved by the present invention is that in a tablet filling device, the shutter plate is made of a thin flexible material, and its tip is brought into contact with the packaging film directly below the chute so that it is almost parallel to the film. The object of the present invention is to reduce the distance between the lower end of the chute and the packaging film, thereby enabling high-speed filling operations.

(d) Means for Solving the Problems One invention of the present application is a filling method in which tablets are filled into pockets of a continuously transported packaging film through a chute, in which a shutter plate that closes the open end of the chute is provided. The tip of the shutter plate is moved back and forth along an arcuate surface whose center of curvature is an axis that is above the packaging film, is approximately parallel to the packaging film, and is approximately perpendicular to the direction in which the packaging film is transported. The tip of the shutter plate is brought into contact with the upper surface of the packaging film just below the chute, and is bent to move substantially parallel to the packaging film.

Another invention of the present application is an apparatus for filling tablets into pockets of a continuously transported packaging film through a chute, in which a tablet passage is formed in the chute and is disposed above the packaging film and penetrates vertically. A chute body is provided, and a lever is attached to the side of the chute body so as to be capable of reciprocating rotation about an axis substantially parallel to the packaging film and substantially perpendicular to the transport direction of the packaging film. A thin and flexible shutter plate is attached, and the shutter plate is movable along a circular arc surface with the axis as the center of curvature, so that the tip of the shutter plate can be retracted and retracted from below the opening end of the tablet passage. A pressing roller capable of pressing the shutter plate against the upper surface of the packaging film is provided on the lower end side of the chute body, and is rotatable and approximately parallel to the axis, and the tip of the shutter plate is placed under the open end. It is configured so that it can be moved while in contact with the packaging film.

(e) Effect In the above configuration, when the pocket formed in the packaging film is not filled with tablets, the lever is rotated in one direction about the axis, so that the tip of the shutter plate is positioned at the lower end of the chute body. The tablet is sent out with the packaging film on the lower side, and prevents the tablet from falling into the pocket from the tablet passage in the chute body. On the other hand, when filling the pocket with tablets, the lever is rotated in the opposite direction and the tip of the shutter plate is retracted from the lower end of the chute body, allowing the tablet to fall into the pocket from the tablet passage.

The shutter plate is made of a flexible material, and when it is sent under the chute body, it is in contact with the packaging film and is almost parallel to the packaging film, so the lower end of the chute body can be brought close to the packaging film. This makes it possible to increase the filling speed.

(f) Examples Examples of the present invention will be described below with reference to the drawings.

3 and 4, a shutter-type tablet filling device (hereinafter simply referred to as a filling device) 1 of this embodiment is shown.
It is shown. The filling device 1 includes a chute 2 extending over almost the entire width of the packaging film f, a shutter mechanism 3, a presser roller mechanism 5 for pressing the shutter plate of the shutter mechanism 3, and a drive mechanism 6.

The chute 2 has a chute main body 20 in which the same number of tablet passages 21 passing vertically as the number of pockets p formed in the packaging film in the width direction are formed. The lower end of the chute body 20 is brought close to the packaging film f.

The shutter mechanism 3 includes a shaft 31 rotatably supported by a pair of bearing members 30 on the side of the chute body 20, a pair of levers 32 and 33 fixed to both ends of the shaft 31, and a pair of levers 32 and 33. A shaft 34 rotatably attached to the end, a pair of mounting members 35 and 36 fixed to the shaft 34, and a thin
0.2 mm) metal shutter plate 37.

The tip of the shutter plate 37 extends downward from the shoot body 20. Each of the mounting members 35 and 36 is pulled in a certain direction (the direction in which the tip of the shutter plate 32 moves away from the chute body) by springs 39 and 40 provided between the corresponding levers 32 and 33. Members 41 and 42 fixed to each lever 32 and 33 have stopper screws 43 and 4 that engage with the rear ends of the mounting members 35 and 36 to adjust the inclination angle of the shutter plate 37 with respect to the lever.
4 are screwed together in an adjustable manner.

The presser roller mechanism 5 is supported movably up and down by a pair of blocks 50 provided on the lower end side of the chute body 20 (on the same side as the shaft 31), and in a long hole 51 of each block 50. It has a bearing 52 and a presser roller 53 rotatably attached to the bearing 52. Presser roller 5
3 extends close to the packaging film f over its entire width, and its axis of rotation is approximately parallel to the packaging film and approximately perpendicular to its transport direction. Each bearing 52 can be adjusted up and down by an adjustment screw 54 that is adjustably screwed into the block. The height of the presser roller can be adjusted using adjustment screws on both blocks.

The drive mechanism 6 includes a drive shaft 60 that is reciprocatingly rotated by a known drive device (not shown), and a drive shaft 6.
The drive arm 61 fixed at 0 and the drive arm 6
The transmission lever 62 is rotatably attached to the drive shaft adjacent to the transmission lever 1, and the transmission lever 62 and the rear end of the front lever 32 are interlocked by a connecting rod 63. Then, one end of the transmission lever is pulled by the spring 64 and pushes the connecting rod 63 in the direction of arrow
It is designed to be pressed in the direction shown in the figure. Then, the drive arm 61 rotates in the direction of arrow Z, and the roller 65 attached to its tip comes into contact with the tip 66 of the transmission lever 62, thereby rotating the transmission lever 62 in the same direction and moving the connecting rod in the direction of arrow X. By moving in the opposite direction, the tip of the shutter plate 37 is moved below the lower end of the chute body 20, that is, under the open end of the lower end of the passage 21. In addition, 67 is a rotatable stopper arm, and 68 is a cylinder, which can only rotate when the stopper arm is pushed up by the cylinder 68 and its tip is separated from the tip 66 of the transmission lever 62. When the piston rod of the cylinder is lowered and the stopper arm 67 is lowered and engaged with the transmission lever, the transmission lever remains in the orientation F, and the shutter plate remains blocking the lower end of the chute.

When it is desired to stop the filling of tablets while the packaging machine is running, the cylinder 68 can be activated to close the lower end of the chute with a shutter plate.

In the filling device having the above configuration, when in use, the tip of the shutter plate 37 is pressed against the packaging film f by the presser roller as shown in FIG. is close to and parallel to it. Moreover, since the shutter plate is made extremely thin, the distance between the chute body 20 and the packaging film f is extremely small. Therefore, even if the filling speed is faster than that of the conventional shutter type, it is possible to reliably put the tablet into the pocket p formed in the packaging film.

In order to further increase the filling speed, two filling devices 1 are installed in series in the direction of travel of the packaging film, as shown in FIG. Fill every other row.

When not filling tablets into pockets in the upstream filling device, the drive arm 61 holds the transmission lever 62 in the direction F, and the transmission lever 62 is held in the direction F in the direction shown in FIGS. 7A and B.
The lower end of the tablet passage 21 of the chute 2 is closed with a shutter plate 37 as shown in FIG. When the pocket p to be filled approaches the bottom of the chute 2 (7th
When the drive arm 61 starts moving in the direction opposite to the arrow Z and the pocket comes under the chute (FIG. 7C), the transmission lever 62 is moved by the spring 64.
The direction is R due to the action of , and tablets are filled. Immediately after filling is completed, the drive arm 61 moves to Z.
As shown in FIG. 7D, the lower part of the tablet passage is closed to prevent the next pocket from being filled with tablets.

By repeating the above operations, the upstream filling device fills tablets into every other row of pockets, and the downstream filling device fills the remaining pockets.

(g) Effects In the filling method of the present invention, the lower end of the chute body can be brought very close to the packaging film, so the filling speed can be increased even with a shutter type filling method.

In the filling device of the present invention, the lower end of the chute body can be approached very close to the packaging film, so even if the filling speed is increased with a shutter-type filling device, the pocket can be reliably filled.

Furthermore, in the filling method of the embodiment, since two filling devices are arranged in series, the filling speed can be further increased.

[Brief explanation of the drawing]

1 and 2 are schematic diagrams showing a conventional tablet filling device, FIG. 3 is a perspective view of a tablet filling device according to the present invention, FIG. 4 is a schematic explanatory diagram of the drive mechanism, and FIG. 5 is a diagram of the shutter plate. FIG. 6 is an arrangement diagram of the tablet filling device, and FIG. 7 is an explanatory diagram of the operation of the tablet filling device, with the press roller omitted. 1: tablet filling device, 2: chute, 21: tablet passage, 3: shutter mechanism, 37: shutter plate,
4: Presser mechanism.

Claims (1)

[Claims] 1. A filling method in which tablets are filled into the pockets of a continuously transported packaging film through a chute, in which a shutter plate that closes the open end of the chute is placed above the packaging film, and the packaging film is The tip of the shutter plate is reciprocated along an arcuate surface whose center of curvature is an axis substantially parallel to and substantially perpendicular to the transport direction of the packaging film, so that the tip of the shutter plate appears and retracts under the open end. A method for filling tablets, characterized in that a part is brought into contact with the upper surface of the packaging film immediately below the chute, is bent, and is moved substantially parallel to the packaging film. 2. In a device for filling tablets into pockets of a continuously transported packaging film through a chute,
The chute is provided with a chute body which is disposed above the packaging film and has a tablet passage formed through it vertically, and a lever is provided on the side of the chute body so that the chute is approximately parallel to the packaging film and is connected to the packaging film. A thin and flexible shutter plate is attached to the lever, and the shutter plate can be moved along an arcuate surface with the axis as the center of curvature. so that the tip of the shutter plate can protrude and retract under the opening end of the tablet passage, and a pressure roller that can press the shutter plate against the upper surface of the packaging film is provided at the lower end side of the chute body, aligned with the axis. 1. A tablet filling device, characterized in that it is arranged substantially parallel and rotatable, and is movable with the tip of the shutter plate in contact with the packaging film under the open end.