JPH0235435Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cleaning tool used for cleaning the punch sliding holes of a rotary powder compression molding machine such as a rotary tablet press.

[Conventional technology]

Rotary tablet presses, etc., are generally cleaned by manually wiping each time using alcoholic water, and the punch sliding holes in the rotary disk are also wiped clean with alcoholic water. .

[Problem that the invention attempts to solve]

By the way, since the outer diameter of the punch sliding holes is small and the number of punch sliding holes is quite large, it is difficult to clean the mixture of lubricating oil and powder etc. adhering to the inner surfaces of all of these punch sliding holes. However, there was a problem in that it required a lot of effort.

[Means for solving problems]

In this invention, the main body of the cleaning tool is removably attached to the punch sliding hole of the rotary disk, and the head part that slides in contact with the pestle guide track is connected to one end of the body that slides in the sliding hole. The main body of the cleaning tool is provided with through holes opening at both upper and lower ends thereof, and a cleaning groove is carved on the outer surface of the body, and at least a part of this groove is communicated with the through hole. do.

[Effect]

The cleaning tool configured as described above is used by being attached to the rotary disk so that the body of the cleaning tool main body is inserted into each of the punch sliding holes provided on the rotary disk. and,
By rotating the turntable, the main body of the cleaning tool is rotated and moved up and down through the engagement of its head with the pestle guide track, compression roll, etc., so that the cleaning groove formed on the outer surface of the body Scrape and clean the inner circumferential surface of the punch sliding hole with the groove edge of the groove, and discharge the scraped deposits from the inside surface of the punch sliding hole into the through-hole of the cleaning tool body that connects to the cleaning groove. Continuing the action.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3. The cleaning tool A shown in detail in FIGS. The powder compression molding machine will first be explained with reference to FIG.

1 in Fig. 3 is the fuselage, which consists of a lower frame 3 with a built-in drive mechanism 2, and this frame 3.
An upper frame 5 provided above via a plurality of pillars 4
It also has a bathroom 6.

The bathroom 6 is divided into upper and lower frames 5, 3 and a plurality of doors 7 which are attached between the upper and lower frames 5 and 3 so as to be openable and closable by hinges (not shown). Of course, the door 7 serves to protect the bathroom 6 from dust and to prevent powder from scattering outside the bathroom 6, but the door 7 itself is liquid-tight, and when closed, the upper and lower frames 5, 3 A rubber annular liquid-tight gasket 8 is attached to the inner surface of the door 7 in close contact with the pillar 4 to keep the bathroom 6 liquid-tight. The closed state of the door 7 is held by a clamp mechanism (not shown), and the gasket 8 is pressed by tightening the clamp mechanism. Also,
7a is a transparent panel provided as necessary.

A water supply pipe 9 and an air supply pipe 10 are respectively attached to, for example, the upper frame 5 of the body 1, with one end facing the bathroom 6. The other end of the water supply pipe 9 protruding outside the fuselage 1 is connected to a cleaning liquid tank 12 built in a cleaning unit 11 installed outside the fuselage 1 or inside the lower frame 3 via a pump 13 and an electromagnetic shut-off valve 14. connected. The cleaning liquid tank 12 stores cleaning liquid such as water or a solvent at room temperature or heated if necessary. At the same time, the other end of the air supply pipe 10 protruding outside the body 1 is also connected to a hot air generator 15 built in the cleaning unit 11 via an electromagnetic on-off valve 16. Furthermore, a drain pipe 17 is attached to, for example, the lower frame 3 of the body 1, with one end facing the bathroom 6 and the other end protruding outside the body 1. An electromagnetic on-off valve 18 is attached to this pipe 17. In addition, 19 in the figure is the cleaning unit 1.
1, which controls the operation timing of the drive mechanism 2, pump 13, hot air generator 15, on-off valves 14, 16, 18, etc.; An arbitrary cleaning cycle can be set by the setting operation at step 19.

A fixed shaft 20 is provided in the center of the body 1, passing through the lower frame 3, and a drive shaft 21 is provided loosely fitting around the outer periphery of this shaft 20. Note that the upper end of the fixed shaft 20 is connected to the connecting member 22.
It is fixed to the upper frame 5 via. The drive shaft 21 is rotatably supported by the upper and lower frames 5 and 3 via bearings 23 and 24, and its lower end is connected to the worm gear 2a, which is the output member of the drive mechanism 2.

For example, a two-part rotary disk 25 is attached to the outer periphery of the drive shaft 21 and rotates integrally therewith. This rotary disk 25 has several to several dozen dies 26.
is installed. Furthermore, an upper punch 27 that is inserted into and removed from the mortar hole of the mortar 26 from above, and a lower punch 28 that forms the bottom of the mortar hole are respectively attached to the rotary disk 25 so as to be movable up and down.

Further, in the bathroom 6, there are various molded elements located around the rotary disk 25, that is, the rotary disk 25.
an open powder feeder 29 in contact with the upper surface of the mortar attachment part, an upper punch guide track 30 fixed to the upper frame 5, and a track support 31 fixed to the lower frame 3.
A lower punch guide track 3 consisting of a lowering track member, a weight adjustment track member, a thrusting track member, etc. attached to the
2. Upper and lower pressure rolls 33 and 34 rotatably mounted on the upper frame 5 and the lower frame 3, respectively, a scraper (not shown) provided in contact with the upper surface of the mortar attachment part, and a molding machine connected to this scraper outside the bathroom 6. A chute, etc. (not shown) for guiding the products is provided. Note that at least the outlet side of the chute is removable. Further, in the figure, 35 is a support plate fixed to the column 4 to support the powder feeder 29, scraper, etc., and 36 is a partition plate fixed to the column 4 to prevent the powder from scattering downward. is integral with or separate from the support plate 35.

Among the parts housed in the bathroom 6, such as the rotary disk 25 and the molded elements, parts that require waterproofing are provided with liquid-tight measures. That is, in the above structure, annular oil seals 37 are provided between the lower frame 3 and the rotary disk 25 and between the rotary disk 25 and the upper punch guide track 30, respectively. Along with this, an adjustment washer 3 sandwiched between the upper frame 5 and the upper punch guide track 30
8 and the upper frame 5 and the upper punch guide track 30, and between the pair of rotary disk constituent members forming the rotary disk 25, rubber O-rings 39 are installed, respectively.
is provided. Moreover, the pressure rollers 33, 3
Rubber O-rings 40 are also provided on the bearing portions 4, respectively.

Furthermore, each part housed in the bathroom 6, such as the rotary disk 25 and molded elements, is made of rust-proofing material, or is coated with metal plating, resin coating, etc. to prevent rust. In other words, in the above structure, the rotary disk 25, the mortar 26, and each punch 2
7 and 28 are made of stainless steel, which has excellent rust prevention properties. Along with this, the powder feeder 29, each guide track 30, 32, track support 31, scraper,
Shute, pressure rollers 33, 34, support plate 35,
The entire surfaces of the partition plate 36, adjustment washer 38, and surrounding parts are plated, and at least the surfaces of the upper and lower frames 5, 3 and pillars 4 facing the bathroom 6 are also plated. There is. Furthermore, the joint surfaces between the upper and lower frames 5, 3 and the pillars 4 are each filled with caulking material.

Note that a top plate 41 that covers the upper surface of the upper frame 5
On the top is a supply device for raw material powder, such as a shutter 42a.
A hopper 42 having a
It is connected to 9. In addition, if various sensors are provided as necessary for compression molding,
Each of these sensors is waterproofed.

A cleaning tool A used in a liquid bath type rotary powder compression molding machine having the above structure will be explained with reference to FIGS. 1 and 2.

This cleaning tool A is used by being attached to a punch sliding hole 44 formed in the rotary disk 25 to guide the upper punch 27 and the lower punch 28 so as to be movable up and down. The cleaning tool A is formed to include a cleaning tool main body 45, a through hole 46, and a cleaning groove 47.

That is, the cleaning tool main body 45 is detachably attached to the punch sliding hole 44 of the rotary disk 25, and the punch guide track 30, Head 45b that slides into contact with 32
The body portion 45a is longer than the punch sliding hole 44 and is provided so as to pass through the punch sliding hole 44. The through holes 46 are opened at both upper and lower ends of the cleaning tool main body 45. Further, a cleaning groove 47 is carved on the outer surface of the body portion 45a. Note that this embodiment shows a case where a plurality of cleaning grooves 47 are provided in an annular shape along the circumferential direction of the body portion 45a. Furthermore, this cleaning groove 47 is communicated with the through hole 46 via a plurality of communication holes 48.

Next, cleaning performed using the cleaning tool A after completion of a predetermined compression molding operation will be explained.

First, prior to cleaning, all the upper and lower punches 27 and 28 are removed from each punch sliding hole 44 of the rotary disk 25, and in place of these punches 27 and 28, the body 45a of the cleaning tool A is removed. The cleaning tools A are attached to the rotary disk 25 by being slidably inserted into the punch sliding holes 44, respectively. Further, the removable portion of the chute is removed, a waterproof lid (not shown) is placed on the bathroom penetrating portion, and the resin tube 43 is removed if necessary, and then the door 7 is closed.

In this state, the upper and lower pestles 27, 28
The cleaning tool A is attached to the rotary disk 25 in place of the molded product, and the powder feeder 29, upper punch guide track 30, track support 31, lower punch guide track 32, The upper and lower pressure rolls 33 and 34, scrapers, and other various molding elements are still installed in the bathroom 6 where they are stored.
The cleaning liquid is filled at least up to a height where the head 45b of the cleaning tool A attached to the upper punch sliding hole 44 touches. In this case, the cleaning liquid is supplied from the cleaning liquid tank 12 to the bathroom 6 by the cleaning cycle control device 1.
The water supply is carried out through the water supply pipe 9 via the pump 13 and the on-off valve 14 which are operated by commands from the bathroom 6. As a result of the above supply, the rotary plate 25 and most of the molded elements are immersed in the cleaning liquid, and the air in the bathroom 6 is The pressure roll 33 is attached to the upper frame 5 through the mounting portion of the pressure roll 33 and the like.

Next, the drive mechanism 2 of the rotary powder compression molding machine is operated under such a liquid bath. Therefore, as the rotary disk 25 rotates, the head 45b of each cleaning tool A engages with the punch guide tracks 30, 32 and the pressure rolls 33, 34, so that the upper punch during molding. 27 and the lower punch 28, it is moved up and down while rotating. Due to the movement of each cleaning tool A, the cleaning groove 4 formed on the outer surface of the body 45a
The inner circumferential surface of the punch sliding hole 44 is scraped and cleaned with the groove edge 7, and the thus scraped deposits on the inner surface of the punch sliding hole 44 are transferred to the cleaning groove 47 through the communication hole 48. The through holes 4 of the cleaning tool main body 45 are connected in a row.
6, the cleaning groove 47 is prevented from clogging and the above-mentioned scraping action continues. Moreover, since both the upper and lower ends of the through hole 46 are open, the cleaning liquid can flow through the inside, thereby further improving the cleaning performance of the punch sliding hole 44.
Moreover, the cleaning tool A itself can be washed completely.
At the same time, the rotary disk 2 immersed in the cleaning liquid
5. Powder contact members such as the mortar 26 and various molding elements are automatically cleaned with a cleaning liquid. After this liquid bath cleaning, the on-off valve 18 is opened in response to a command from the cleaning cycle control device 19, and the drain pipe is opened. Dirty cleaning liquid in the bathroom 6 is discharged to the outside of the bathroom 6 through 17.

Note that the liquid bath cleaning described above may be performed in the same manner as long as it takes a long time, but in the case of this embodiment, in order to further enhance the cleaning effect, preliminary cleaning is first performed according to a command from the cleaning cycle control device 19. Then, after draining water, full-fledged liquid bath cleaning is performed, and after draining water, the cleaning liquid is accumulated in the bathroom 6 to the above-mentioned height while flowing the cleaning liquid.
Alternatively, the liquid can be left in the reservoir and used for rinsing.

Finally, after the cleaning liquid is discharged following the liquid bath cleaning described above, the hot air generation device 15 and the on-off valve 16 are operated in response to a command from the cleaning cycle control device 19, so that dry air is blown into the bathroom 6 through the air supply pipe 10. be included. As a result, various members including the wet bathroom 6 and the rotary disk 25 housed therein are quickly forcedly dried.
After this, the drive of the rotary powder compression molding machine is stopped.

The rotary disk 25, its punch sliding hole 44, and the mortar 2 are now complete.
6, powder contact members such as various molding elements, and automatic cleaning of the bathroom 6 are completed at the same time.

Although the above-mentioned embodiment is constructed as described above, in the present invention, one cleaning groove 47 may be spirally carved on the outer surface of the body portion 45a as shown in FIG. , as shown in FIG. 5, a large number of cleaning grooves 47 may be carved along the axial direction on the outer surface of the body 45a, and furthermore, as shown in FIG.
It may also be implemented by making it into a knurled shape and carving it on the outer surface of the body portion 45a. In the case of the embodiment shown in FIG. 5, the entire cleaning groove 47 may be directly communicated with the through hole 46 and the communication hole may be omitted. Further, the present invention may be implemented by embedding a brush that slides in the punch sliding hole between the cleaning grooves. Furthermore, the present invention can be implemented not only in a rotary powder compression molding machine that does not have a bathroom and performs automatic cleaning while rotating a rotary disk, but also in a non-liquid bath type rotary powder compression molding machine.

[Effect of idea]

Since the present invention described above has the structure described in the above-mentioned utility model registration claims, it is possible to avoid scraping by the groove edge of the cleaning groove formed in the body of the cleaning tool body that slides through the punch sliding hole of the rotary disk. It is possible to provide a cleaning tool that can clean the punch sliding hole with the rotation of the turntable by the gripping action, and can maintain the cleaning function by providing a through hole communicating with the cleaning groove. Therefore, by using the cleaning tool of the present invention, there is no need to manually clean each punch sliding hole one by one, or the effort required for cleaning can be significantly reduced.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
FIG. 1 is a front view, FIG. 2 is a longitudinal cross-sectional view, and FIG. 3 is an explanatory diagram of the structure of a liquid bath type rotary tablet press. FIGS. 4 to 6 are front views showing other different embodiments. 25...Rotary disk, 30...Upper punch guide track, 32
... Lower pestle guide track, 44 ... Pestle sliding hole, A ... Cleaning tool, 45 ... Cleaning tool main body, 45a ... Body, 4
5b...Head, 46...Through hole, 47...Cleaning groove, 48...Communication hole.

Claims (1)

[Scope of utility model registration request] The cleaning tool body is removably attached to a punch sliding hole of the rotary disk, and a head that slides in sliding contact with the pestle guide track is formed in series with one end of the body that slides in contact with the sliding hole,
A rotating device characterized in that the main body of the cleaning tool is provided with through holes opening at both upper and lower ends thereof, and a cleaning groove is carved on the outer surface of the body, and at least a part of the groove is communicated with the through hole. Cleaning tool for powder compression molding machines.