JPH048292B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a tablet feeding device for appropriately picking out stored tablets and introducing them into a packaging section in a tablet packaging machine.

(b) Conventional technology As such a tablet feeding device,
There is a technique disclosed in Publication No. 34786. This is a device that uses a solenoid to drive a tablet alignment tube into a tablet storage device and introduces the tablets into the tube to extract the tablets.
Since the stored tablets are stirred by the thrusting, a stable supply of tablets is achieved, but there is a drawback that the operation noise becomes louder. Furthermore, Japanese Utility Model Publication No. 56-44728 discloses a configuration in which several grooves are formed in an alignment ring, and while the alignment ring is rotated, tablets are introduced into the grooves, aligned, and extracted by natural fall from the groove. There is. Since this tablet delivery drive system is a rotary type,
The operation noise is lower than the above-mentioned push-up method.

(c) Problems to be Solved by the Invention However, the above-mentioned conventional technology based on the rotation method has the following problems in terms of supply operation. In other words, tablets generally have an elongated shape (particularly noticeable in capsule-shaped tablets), and when they fall naturally, they fall with their longitudinal direction perpendicular. They are stacked and lined up. However, the stable state of a tablet is when its longitudinal direction is horizontal, and since tablets stored in a tablet storage device are naturally in this stable state, situations often occur where it is difficult for the tablet to be introduced into the groove. The tablet may not be removed. Therefore, this problem can be solved by forming grooves so that the tablets are aligned horizontally in the longitudinal direction. It was extremely difficult to reliably separate and discharge one piece from the other.

In view of the above points, the present invention provides a rotary tablet feeding device capable of performing a stable tablet extraction operation.

(d) Means for Solving the Problems In order to solve the above problems, the tablet feeding device according to the present invention includes a rotary plate that has a groove on its periphery and is arranged at an angle, and a rotary plate that is arranged at an angle, and a tablet that is inserted into the groove. a tablet storage section having an inclined surface for supplying tablets; a tablet ejection port provided above the rotary plate; an extrusion member attached to the rotary plate so as to be movable in a radial direction of the rotary plate; a spring biasing in the propulsion direction; a locking device disposed at a rear position of the extrusion member with respect to the rotational direction of the rotating plate and protruding into the groove; a roller attached to the extrusion member; It has a sliding cam surface, and when the extrusion member is located below the rotary plate, the extrusion member is retracted against the spring, and when the extrusion member is located at the tablet ejection port, the extrusion member is moved by the spring. It is equipped with a cam that advances the.

(e) Action When the extrusion member is at the lower end of the rotating plate, the roller is locked to the cam and the cam surface, so the extrusion member is inserted into the spring and moves toward the center of the rotating plate. is retreating in the direction. Therefore, the tablets that have accumulated on the inclined lower end of the rotary plate and entered the groove in the tablet storage section are held by the retracted pushing member and the locking device. When the extrusion member reaches the tablet ejection port due to the rotation of the rotary plate, the locking of the roller by the cam is released, and the extrusion member advances in the radial direction due to the spring force, removing the tablet held by the locking device. Discharge from the outlet.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings. In the figure, a rotating plate 1 arranged at an angle has an annular groove 2 formed on its periphery by an inner wall 11 and an outer wall 10, and a rotating shaft 12 has gears 13, 14.
It is connected to the drive shaft of the motor 15 via.
The tablet storage section 3 made of a cylindrical body includes the rotary plate 1 and is attached to a bottom plate 16 disposed adjacent to the rotary plate 1. Therefore, the tablet storage section 3
The tablets stored in the rotary plate 1 are guided from the lower end of the inclined rotary plate 1 to the groove 2 along the inclined surface 3a of the tablet storage part 3, and are deposited on the lower end corners of the rotary plate 1 and the tablet storage part 3. In this example, the tablet storage section 3 is configured to have a cylindrical shape extending from the rotary plate 1, but other shapes may be used as long as the tablets are deposited from the lower end of the rotary plate 1 arranged at an angle. Also good. On the other hand, the outer wall 10 of the rotary plate 1 is provided with holes 17 at equal intervals that substantially correspond to the longitudinal dimensions of the tablets, and furthermore, the rotary plate 1 has holes 17 that can freely advance and retreat toward each hole 17 by means of a control member and springs. A push-out member 5 that is urged in the advancing direction at 6 is attached. The control member is composed of a cam 8 formed on the bottom plate 16 and a sliding rod 9 equipped with a roller 18 that is attached to the extrusion member 5 and slides on the cam surface. When the cam 18 slides on the cam surface, the pushing member 9 moves forward or backward depending on the shape of the cam 8. Therefore, the rotary plate 1 is formed with a recess 23 in which the extrusion member 5 slides. and groove 2
A locking tool 7 is provided corresponding to each hole 17, and the locking tool 7 is fixed to the rear end side of the hole 17 with respect to the rotational direction of the rotary plate 1 (indicated by an arrow in FIG. 2). It is protruded inward. Also tilted rotating plate 1
A tablet ejection port 4 is provided in the tablet accommodating portion 3 located at a position facing the upper end of the tablet accommodating portion 3, and is configured to communicate with 17 holes that reach the upper end through rotation of the rotary plate 1.

To explain the operation of the above configuration, the tablets loaded from the tablet inlet 19 roll along the inclined surface 3a of the tablet storage section 3 and are deposited from the lower end of the inclined rotary plate 1, and the tablets are deposited in the groove 2. be introduced. Then, when the motor 15 is driven by a predetermined tablet extraction signal and the rotary plate 1 is rotated, the tablets in the groove 2 are all brought into contact with the bottom of the groove 2 in the longitudinal direction in the process of being transferred to the upper end of the rotary plate 1. Aligned. On the other hand, when the rotary plate 1 rotates, the extrusion member 5 that has passed through the tablet ejection port 4 is moved to the sliding rod 9 by sliding on the cam surface of the roller 18.
is pulled toward the center by the movement of the spring 6, and is completely retracted from the groove 2 at its lower end. Therefore, while the tablets aligned in the grooves 2 are transferred from the lower end to the upper end by the rotation of the rotary plate 1, the locking tool 7 is held at a position facing the pushing member 5 because the pushing member 5 is retreating. is locked. and rotating plate 1
When the roller 18 reaches the position where the hole 17 and the tablet outlet 4 communicate with each other, the roller 18 fits into the cam 8 and the notch 20, so the biasing force applied by the sliding rod 9 is released and the pushing member 5 is pushed outward by the spring force. The tablets held by the locking device 7 are ejected into the chute 21 and introduced into the tablet packaging machine. At this time, the push-out member 5 advances until its protrusion 24 comes into contact with the corner 25 of the recess 23. Here, the plurality of tablets that have entered the groove 2 on the lower side are moved to the upper package by the rotation of the rotary plate 1 and the locking device 7, but when this upper package is moved, they overlap in the circumferential direction within the groove 2 and are are arranged in a line. The tablets arranged in an overlapping manner within the groove 2 reach the position of the tablet ejection port 4, but since the extrusion member 5 is located near the locking device 7, only the tablets that are directly locked to the locking device 7 are removed. It is pushed out by the pushing member 5 and discharged. Here, the tablet that has entered the groove 2 slides in the circumferential direction so as to close the gap between adjacent tablets, but its posture is not changed. When the extrusion member 5 advances in this way, the hole 17 is closed by the extrusion member 5, so that the tablet is not extracted continuously. Further, since the tablet ejection port 4 is provided at the upper end, the stored tablets are unlikely to be concentrated in the tablet ejection port 4, and therefore, when the extrusion member 5 moves as the tablet is ejected, the member 5
tablets are unlikely to pinch or catch other tablets. In this example, the rotary plate 1 is provided with an outer wall 10 to form the groove 2, but the peripheral wall 2 of the tablet storage section 3 is
2 can also be substituted, and since the rotary plate 1 forms the bottom of the tablet storage section 3, the cam 8 is formed on the bottom plate 16 side, but if the cam 8 is formed separately, the bottom plate 16 is not particularly necessary. And the control members are not limited to the cam 8 and the sliding rod 9, but other modifications are also possible.
In short, any mechanism may be used as long as the extrusion member 5 is retracted when it is at the lower end, and advanced when it reaches the tablet outlet 4 at the upper end.

(G) Effects of the Invention According to the present invention, since the accumulated tablets are guided into the groove along the inclined surface of the tablet storage section, the tablets can be accommodated in the groove and aligned in a stable state in which the longitudinal direction is horizontal. This makes it possible to reliably separate the tablets to be taken out. Moreover, since the tablets are ejected by the action of the extrusion member, the ejection time can be shortened compared to the conventional method of gravity-dropping, and the processing speed of the device can be improved.

[Brief explanation of drawings]

1 and 2 are views showing a side view and a plane view of a tablet feeding device according to the present invention, respectively, with main parts in cross section; FIG. 1 is a sectional view taken along line BB in FIG. FIG. 1 is a sectional view taken along line A-A in FIG. FIG. 3 is a diagram illustrating the main parts of FIG. 1. 1... Rotating plate, 2... Groove, 3... Tablet storage section,
4... Tablet ejection port, 5... Extrusion member, 6... Spring, 7... Locking tool, 8... Cam, 9... Sliding rod,
18... Laura.

Claims (1)

[Claims] 1. A rotating plate having a groove on its periphery and arranged at an angle, a tablet storage section having an inclined surface for supplying tablets to the groove, a tablet outlet provided above the rotating plate, and the rotating plate. an extrusion member attached to the rotary plate so as to be movable in the radial direction of the plate; a spring that urges the extrusion member in the advancing direction; a locking tool provided on the extrusion member, a roller attached to the extrusion member, and a cam surface on which the roller slides; when the extrusion member is below the rotating plate, the extrusion member is inserted into the spring; and a cam that causes the extrusion member to move forward by the spring when the extrusion member is located at the tablet ejection port.