JPS6137245A - Coating apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a coaching device used for coating drugs, foods, etc. with other pharmaceutical compounds, acids, sugar coatings, etc. This invention relates to a coaching device with an improved feeding section.

[Background Art] When a coating material such as a film liquid or a sugar coating liquid is sprayed onto the surface of a material to be coated such as a tablet using a coating device and the coating material adhered to the surface of the material to be coated is dried, the material to be coated is coated. A method is adopted in which the coating material is housed in a pan, and the material to be coated is transferred by rotation of the coaching pan, while the coating material is dried using hot air as a drying gas.

In such a method, the surface layer of the rolling material to be coated is relatively well dried, but the structure makes it difficult for hot air to reach the stagnation area in the inner layer and the material to be coated in the lower layer. This results in uneven and insufficient drying.

On the other hand, in order to eliminate such conventional drawbacks, the present applicant proposed in Japanese Patent Publication No. 50-38713, as shown in FIG. part 2 and an air supply conduit 3 as a ventilation conduit.
The present invention proposes a coating device equipped with a drying mechanism consisting of an energizing duct 4 and an exhaust conduit 5 as a ventilation conduit.

In this coach 71-device, heated gas as a drying gas blown into the coaching pan 1 from the supply air conduit 3 is blown onto the tablets 6, which are the material to be coated, rolling in the coaching pan. After penetrating deeply into the inner layer 6, the gas is discharged from the porous portion 2 through the ventilation duct 4 and the exhaust conduit 5 to the outside air side.

In this coating device, the heated gas for drying comes into contact with all the tablets in the surface layer, inner layer, and bottom layer almost evenly, so that the coating material can be dried evenly and a homogeneous product can be produced with high productivity. can get. In addition, in FIG. 7, 7 is a rotating shaft for drying the coaching pan 1, 8 is a bearing of the rotating shaft 7,
9 is a support roll for the coaching pan 1; 10 is a motor driven via a transmission means 11 such as a rotating shaft 7; 12 is a pan opening for charging the material to be coated into the coaching pan 1; 13 is a pan opening 12 It is the lid of These pan mouth 12, lid 13, air supply conduit 3, and exhaust conduit 5 have a non-rotating structure with respect to the coaching pan 1, and are sealed with a labyrinth seal or the like against rotating parts including the coaching pan 1. .

However, in such a conventional coaching device, since the distance from the lid 13 of the pan opening 12 to the inside of the coaching pan 1 or the porous portion 2 inside the coaching pan 1 is long, it is difficult to feed tablets into the coaching pan 1. There was a problem in that the inside of the coaching pan 1 and the inside of the ventilation duct 4 could not be efficiently cleaned.

[Object of the Invention] An object of the present invention is to provide a coating device that can easily and efficiently perform the work of loading materials such as tablets into a rotating container and cleaning the inside of the rotating container.

[Summary of the Invention] The present invention is a horizontal rotating container in which a part of the container is opened and closed in a plane substantially perpendicular to the rotation axis, and the end of the rotating container is opened and closed during each operation of loading tablets, etc. and cleaning. It is designed to be wide open and then closed again when the work is finished to allow coaching and drying work to be carried out.

[Embodiment 1] FIG. 1 shows an embodiment of the coaching apparatus of the present invention, and components corresponding to those shown in FIG. 7 are given the same reference numerals.

In FIG. 1, the air supply conduit 3 as a ventilation conduit is divided into two parts: a part 3a attached to the main body cover on the fixed side, and a part 3b attached to a part of the coaching pan 1. During ventilation during drying work, these two body parts 3a, 3b are integrally connected at each opposing part by a connecting member 14 such as a tightening band.

Furthermore, a V-shaped sealing material 15 is attached to the opening edge of the bread mouth 12 facing the coaching pan l, which brings the bread mouth 12 into substantially airtight contact with the open end of the coaching pan l.

Further, a ring-shaped guide rail 16 is provided on the outer periphery of the large diameter end of the coaching pan 1, and this guide rail 16 is rotatably supported by a guide roller 9a installed on the fixed side.

Furthermore, the coaching pan 1 is partially separated in a plane perpendicular to the rotational axis at the end of the large diameter part (the location where the guide rail 16 is installed in the figure), and this separated part 1a remains in the remaining part. It can be opened and closed in the plane perpendicular to the portion 1b.

FIG. 2 is a diagram showing such a situation. In the same figure, 1
Reference numeral 7 designates a main body cover on the fixed side. A hinge member 18 is provided inside the main body cover 17. One end of an arm 19 that rotates around a shaft 18a is attached to this hinge member 18, and the other end of this arm 19 is attached to the hinge member 18. is the above separated part 1a
When the coaching pan 1 is opened and closed, it is fixed to the separation part 1a by a port 20, and when the coaching pan 1 is rotated, the separation part 1a is fixed to the separation part 1a.
separated from a.

Therefore, if the arm 19 is rotated clockwise, the separation part 1a will reach the position where it is connected to the separation part 1b, and if the arm 19 is rotated counterclockwise, the separation part 1b, that is, the opening end of the coaching pan 1 will be reached. opens wide.

The main body cover 17 also has a hinge member 21 at the front thereof.
An opening/closing plate 22 is provided to open and close one end of the main body cover 17, and when the opening/closing plate 22 is closed, a clamp 23 provided on the main body cover 17 side is inserted into a locking recess 22a provided in the opening/closing plate 22. By fitting the two, it is possible to maintain the closed state.

Furthermore, the bread opening 12 having the portion 3b of the air supply conduit 3 is fixed approximately at the center of the opening/closing plate 22 as shown in the figure, and the opening/closing plate 22 is rotated counterclockwise around the hinge member 21. When the movement is performed, the sealing material 15 separates from the separated portion 1a.
It is in close contact with the open end of the In other words, the second
It is held at the position indicated by the chain line in the figure. Note that 4a is a closing plate that is protruded from the enlarged diameter end of the separation part 1a and closes the 4 ends of the flange-shaped ventilation duct.When the separation part 1a is pressed against the open end of the separation part 1b, this closing plate 4a is designed to seal the four ends of the duct.

In such a coaching device structure, the above-mentioned clamp 2
3 from the locking recess 22a and rotate the opening/closing plate 22 clockwise to move it to the position shown in the solid line in FIG. move away from Subsequently, this separated portion 1a connects the arm 19 with the port 20 to the separated portion 1a.
a, and then rotate the arm 19 around the shaft 18a.
By rotating counterclockwise, the separation portion 1 of the coaching pan 1 is displaced to the position shown by the solid line in FIG.
a, that is, the open end of the coaching pan 1 and the end of the ventilation duct 4 are wide open at the same time. For this reason, the inside of the coaching pan 1 and the ventilation duct 4 largely face the outside,
Storing the material to be coated and cleaning the interior of the coating pan 1 and the ventilation duct 4 can be carried out easily and quickly.

Incidentally, the operation of joining the separated portion 1a and the bread opening 12 can be carried out by the reverse procedure to the above.

FIG. 3 shows a structure for attaching the porous portion 2 to the main body of the coaching pan 1. According to this, a mounting hole 1c is formed in the inner peripheral wall of the coaching pan 1, a groove 1d is provided on the inner peripheral edge of the mounting hole 1c, and a punching metal plate (2a) which is the porous portion 2 is provided in the groove 1d. The structure is such that the peripheries of the two are fitted together. According to this, it is possible to facilitate and speed up the attachment of the porous portion 2 to the main body of the coaching pan 1.

[Example 2] FIG. 4 shows another example. In this embodiment, heated gas is passed from the air supply conduit 3 on the rear surface (right side in the figure) of the coaching pan 1 to the porous part 2A of the mesoche structure through the lower ventilation duct 4, and further inside the porous part 2A. The tablet 6 is injected from the lower layer and is again led out from the upper ventilation duct 4 to the exhaust conduit 5. Here, the porous part 2A
As shown in FIG. 5, the cross section has a large rectangular shape, and a large number of ventilation holes are provided around the entire circumference. The gap between this porous portion 2A and the surrounding drum-shaped ventilation duct 4 is divided into eight by a partition wall 4c. In other words, according to this implementation structure,
With improved air permeability, a large amount of tablets 6 can be dried quickly.

In addition, in this embodiment, as shown in FIG.
c is attached so that it can be opened and closed by hinge members 21a and 21b. Note that the support structure and function of the arm 19 of the separated portion 1a are substantially the same as those shown in FIG. 24 is a sealing material attached to the small-diameter open end of the separation portion 1a.

In this embodiment, the opening/closing plates 22b and 22C, which are closed by the sealing material 24 of the separation part 1a, are removed from the sixth
When the separating portion 1a is opened as shown in the figure and the arm 19 is rotated counterclockwise at the position indicated by the chain line, the opening ends of the coaching pan 1 and the ventilation duct 4 are wide open.

Thus, the tablet 6 into the porous part 2 of the coaching pan 1
The interior of the coaching pan 1 and the ventilation duct 4 can be easily cleaned to clean every corner.

[Effects] The present invention has a part of the horizontal rotating container that can be separated in a plane substantially perpendicular to the rotation axis of the rotating container. Cleaning work inside the container can be carried out easily and efficiently.

Furthermore, if the ventilation duct can be separated from the rotary container, dirt on the ventilation duct can be removed at the same time.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of the coaching device of the present invention, Fig. 2 is a plan view showing the main parts before and after operation, and Fig. 3 similarly shows the mounting structure of the porous part. 4 is a partially cutaway side view of another embodiment; FIG. 5 is a longitudinal sectional front view; and FIG. 6 is a plan view showing the main parts before and after operation. , FIG. 7 is a partially cutaway side view of a conventional coaching device. DESCRIPTION OF SYMBOLS 1... Coaching pan (rotating container), 2... Porous part, 3, 5... Ventilation conduit, 4... Ventilation duct, 6...
・Material to be coated, 12... Bread opening, 17...
Body cover. Patent applicant Freund Sangyo Co., Ltd. Agent Patent attorney Dai Tsutsui

Claims (2)

[Claims] (1) A horizontal rotary container has a porous part for ventilation drying on the peripheral wall, and the porous part is covered with a ventilation duct from the outer circumferential side of the rotary container, and when the rotary container is rotated to a predetermined position. In the coating device, one end of the ventilation duct is connected to a ventilation conduit facing outside of the rotating container, and a drying gas is circulated inside the rotating container, and a part of the rotating container is approximately connected to the rotation axis of the rotating container. A coaching device characterized in that it is configured to be separated in a vertical plane so that it can be opened and closed. (2) The coaching device according to claim 1, characterized in that when the rotary container is separated so as to be openable and closable, a part of the ventilation duct is also separated.