JP2544901B2 - Rotating disk unit cleaning device for rotary powder compression molding machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for spraying a cleaning liquid onto a rotary disk unit provided in a rotary powder compression molding machine such as a rotary tableting machine for molding tablets.

[0002]

2. Description of the Prior Art As a device for cleaning a rotating disk,
The technology of Japanese Patent No. 9917 is known. In this technology, a cleaning nozzle, to which a cleaning liquid is supplied, is provided on the upper frame of a rotary powder compression molding machine above the rotary disc, and the nozzle is moved up and down to form a die mounting hole facing the vertical direction of the rotary disc.
Nozzle drive means is provided inside the upper punch mounting hole and the lower punch mounting hole so as to be removably inserted, and when the cleaning nozzle is inserted inside each hole on the outer peripheral surface of the cleaning nozzle, these holes are inserted. A plurality of injection holes for injecting a high-pressure cleaning liquid toward the inner surface of the.

According to this conventional apparatus, in the main body frame of the rotary powder compression molding machine, while rotating the rotating disk intermittently, the cleaning nozzle is moved up and down when the rotation is stopped, and the cleaning nozzle is sprayed from the spray hole. The inner surface of the hole formed in the turntable can be washed inside the main body frame.

Further, a technique in which a rotary disk is removed from a main body frame of a rotary powder compression molding machine so that cleaning of the removed rotary disk or the like, and external setup such as die (mill) replacement can be carried out, It is known from Japanese Patent Application No. 3-261384.
FIG. 16 relating to the application of Japanese Patent Application No. 3-261384 and paragraph numbers 0041 to 004 describing the same.
According to the description of 4, the pedestal in the washing chamber provided in the washing device installed outside the rotary powder compression molding machine is rotated by the drive device, and the turntable is placed on the pedestal. A jet pipe is arranged vertically to the side of the turntable, and a plurality of jet nozzles are attached to the jet pipe. Then, the high-pressure cleaning liquid is sprayed from these nozzles onto a rotary disk which is rotated together with the pedestal, whereby the rotary disk is cleaned.

[0005]

[Problems to be Solved by the Invention] However, actual fairness 3-9
According to the technology disclosed in Japanese Patent No. 917, cleaning is performed inside the main frame of the rotary powder compression molding machine without removing the rotary disk.
There is a problem in that it is necessary to take strong waterproof and rustproof measures for each part of the rotary powder compression molding machine that may come into contact with the cleaning liquid during cleaning. Furthermore, since the rotary disk is not removed and external setup is not performed, the molding operation of the rotary powder compression molding machine must be stopped at least until cleaning or subsequent drying is completed,
There is a problem that the operating rate of the molding machine is poor.

Further, since the cleaning device according to the application of Japanese Patent Application No. 3-261384 has a structure in which the cleaning liquid is sprayed from the side of the continuously rotating rotating disk to clean the rotating disk, it can be opened in the rotating disk. The cleaning liquid cannot be sprayed onto the inner surfaces of the die mounting hole and the upper and lower punch mounting holes, which makes it difficult to clean the inside of these holes.

It is an object of the present invention to ensure that a cleaning nozzle that is moved up and down does not hit the rotary disk, and that this nozzle is reliably passed through a die mounting hole and upper and lower punch mounting holes formed in the rotary disk to clean these holes. To obtain a rotary disk unit cleaning device for a rotary powder compression molding machine that does not require strong waterproofing and rust prevention measures for the rotary powder compression molding machine and can contribute to improving the operating rate of this molding machine. is there.

[0008]

The present invention is detachable from a main body frame of a rotary powder compression molding machine, and is installed at the upper end of a main shaft of the molding machine while being set in the main body frame. It is premised on a cleaning device that removes a rotary disk unit that is rotated by a rotational force given through the generated driving force transmission body to the outside of the rotary powder compression molding machine and cleans it. In particular, the turntable unit includes a turntable to which a plurality of dies, an upper punch and a lower punch are detachably attached, a driving force receiving body provided at a lower portion of the turntable, and a central portion of the receiving body. A centering hole that is formed along the thickness direction and has a taper taper toward the upper side, and a driving force receiving body that is formed in the radial direction of the receiving body or extends parallel to this direction and the end of the extending direction. At least one tapered meshing groove portion that is opened, or at least one mating groove portion that has the same structure as this groove portion and that is provided in the driving force transmission body so that it can be taken in and out along the longitudinal direction thereof. It is applied to a structure having a tapered meshing convex portion.

In order to achieve the above object, the rotating disk unit cleaning device of the present invention is an apparatus having a cleaning chamber in which an opening / closing door is attached and the rotating disk unit is taken in and out under the opening of the door. A frame, a drain port provided at the bottom of the cleaning chamber, a rotary table located above the drain port and rotatably provided in the cleaning chamber and on which the turntable unit is removably mounted,
Table driving means for intermittently rotating the rotary table at the same angle as the arrangement pitch of the dies provided on the lower part of the device frame and attached to the rotary plate; and the rotary table extending in the radial direction, A tapered centering ridge or a tapered centering groove that fits in the meshing groove portion or the meshing convex portion of the turntable unit mounted on the rotary table, and the rotation provided in the central portion of the rotary table. A centering head having a tapered shape that is fitted in the centering hole of the disk unit, and a cleaning liquid supplied by being provided above the rotary disk unit housed in the cleaning chamber so as to be vertically movable. The rod-shaped cleaning nozzle and the cleaning nozzle are moved up and down so that the die, the upper punch and the lower punch are respectively removed. A nozzle driving means that is removably inserted inside the die mounting hole, the upper punch mounting hole, and the lower punch mounting hole, and the cleaning nozzle that is provided on the outer peripheral surface of the cleaning nozzle at intervals in the circumferential direction. Is provided with a plurality of injection holes for injecting the cleaning liquid toward the inner surfaces of the die mounting hole, the upper punch mounting hole, and the lower punch mounting hole when these are inserted inside.

[0010]

In the cleaning apparatus having the above structure, the rotary disk unit taken out from the rotary powder compression molding machine is put in and taken out from the cleaning chamber of the apparatus frame with the opening / closing door opened.
The rotating disk unit is washed with the opening / closing door closed, and the washing liquid used for the washing is discharged from the washing chamber to the outside of the washing chamber. During this cleaning, the table driving means intermittently rotates the rotary table on which the rotary disk unit is placed. In addition, the engaging convex strips or interlocking grooves provided on the rotary table, which is taken out from the rotary powder compression molding machine and on which the rotary disc unit is mounted, and the interlocking grooves or interlocking convex protrusions, which are provided on the driving force receiving body of the rotary disc unit. The portion forms a meshing clutch, and the rotary table and the rotary disk unit are intermittently rotated together with the rotary table by the power transmission by the clutch.

The meshing ridge or the meshing groove forming the clutch and the meshing groove or the meshing protrusion are fitted and connected to each other. Since all of these are tapered, there is no rattling in the fitting, and the fitting causes the rotary disc unit to move in the direction in which the engaging groove or the engaging protrusion extends with respect to the rotary table. Positioning can be performed in the radial direction orthogonal to each other.

The centering head provided at the center of the rotary table fits into the centering hole provided at the center of the driving force receiving body. Since each of the head portion and the centering hole has a tapered shape that becomes narrower toward the upper side, by fitting them, in the direction orthogonal to the radial direction, in other words, in the direction in which the engaging groove or the engaging protrusion extends. Along these, these can be slid relative to each other to position the turntable unit with respect to the turntable.

Since the turntable unit can be centered and placed on the turntable by positioning in two directions orthogonal to each other in this manner, the rotation loci of the respective mounting holes formed in the turntable unit are moved up and down. Can be accurately positioned with respect to the nozzle.

The cleaning nozzle to which the cleaning liquid is supplied under this positioning is moved up and down by the operation of the nozzle driving means when the rotary table is stopped. During this ascending / descending, the cleaning nozzle is reliably passed through the die mounting holes and the upper and lower punch mounting holes formed in the rotary disk without hitting the rotary disk based on the above-described positioning. The plurality of injection holes provided in the cleaning nozzle spray the cleaning liquid supplied to the cleaning nozzle at high pressure to spray the cleaning liquid on the inner surface of each mounting hole.

Therefore, since the cleaning nozzle is moved up and down through the respective mounting holes of the rotary disk unit housed in the cleaning chamber every time the intermittent rotation of the rotary table is stopped, the inner surface of each mounting hole is the cleaning nozzle. Is exposed to high-pressure cleaning liquid ejected from the injection port. Thereby, these inner surfaces can be cleaned.

As described above, since the rotary disk unit is removed from the rotary powder compression molding machine and cleaning is performed outside the molding machine, the rotary powder compression molding machine is provided with strong waterproof and rust preventive measures. You don't need it, or you can do it if you need it. Moreover, since the rotary disc unit can be removed, the external setup can be performed, so that even during the cleaning period of the removed rotary disc unit, another rotary disc unit that has already been externally setup can be rotated by the rotary powder compression molding machine. Since this molding machine can be operated after being set to, it is useful for improving the operation rate of the rotary powder compression molding machine.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, the structure of a rotary powder compression molding machine equipped with a rotary disk unit that is cleaned by the cleaning device of the present invention will be described with reference to FIGS. FIG. 1 and FIG. 2 are cross-sectional views schematically showing a configuration of a main part of a rotary tableting machine A that manufactures tablets as an example of a rotary powder compression molding machine. The fixed main body frame 21 shown in FIG. 1 includes a lower frame 22 and an upper frame 23 arranged above the lower frame 22.
And four frame columns 24 connecting the four corners of the upper and lower frames 22 and 23, respectively.

A substantially cylindrical support body 25 projecting above the lower frame 22 is bolted to the central portion of the lower frame 22. Various lower punch cam means and various lower punch pressure rollers 26 are arranged on the lower frame 22 around the support body 25.

As the lower punch cam means, a groove cam-shaped lowering device 27 having an open upper surface, a weight adjusting rail, a transfer rail, a push-up rail and the like (not shown) are used. The lowering device 27 provided at the powder supply position lowers a lower punch described below. The weight adjusting rail, which is arranged at a weighing position adjacent to the lowering device 27 and whose height position is appropriately changed, changes the height position of the lower punch with respect to the die described later. Thereby, the filling amount of the powder taken into the die, in other words, the weight of the molded product is set to a predetermined value. The transfer rail is located adjacent to the heavy rail. The push-up rail is arranged at the take-out position of the molded product and raises the lower punch.
The lowering device 27 is arranged adjacent to the push-up rail.

The lower punch pressure roller 26 is provided at a compression molding position between the transfer rail and the push-up rail. Reference numeral 28 in FIGS. 1 and 2 denotes the lower punch pressure roller 2
A pressing force adjusting means for adjusting the height position of 6 and a detachable cam holder 29 for supporting the lower punch cam means.

A main shaft 130 is arranged in the support body 25 so as to penetrate through the support body 25 in the axial direction, and the main shaft 130 is rotatably supported by a pair of bearings 31 provided inside the support body 25. A driven gear 32 is attached to the lower end of the main shaft 130, and a drive gear 33 having a smaller diameter than this is meshed with the gear 32. The drive gear 33 is connected to a drive device (not shown) including a motor built in the lower frame 22 via a reducer (not shown).

Therefore, when the power of the drive unit is supplied to the drive gear 33 via a clutch (not shown), the driven gear 32 is decelerated and rotated, so that the main shaft 130 is rotated together with the gear 32. In the disengaged state of the clutch or the stopped state of the drive device, the driven gear 32 can be manually rotated in conjunction with the operation of a manually rotated handle (not shown).

At the upper end of the main shaft 130, a driving force transmission body 135
Is bolted. The driving force transmission body 135 is
The planar shape is circular, and one meshing convex portion 136 having a tapered shape protruding upward is provided. A central hole 139 is provided in the central portion of the driving force transmitting body 135 so as to penetrate in the thickness direction thereof and open to the upper surface of the engaging convex portion 136. The meshing convex portion 136 extends in the radial direction of the drive transmission body 135, and has both side surfaces 136 thereof.
a is inclined with respect to each other. As a result, the meshing protrusion 136 is tapered toward the tip thereof. The driving force transmission body 135 is fitted into a recess 134 formed in the upper end of the main shaft 130 and bolted to the main shaft 130.

A central hole 201 penetrates through the central portion of the main shaft 130. The upper end of the center hole 201 is opened to the bottom surface of the recess 134, the lower end is opened to the lower end of the main shaft 130, and the female screw portion 201a is formed in the middle portion.

A lower centering shaft 202, which serves as a lower rotating disk supporting means, is passed through the center hole 201.
The shaft 202 has a male screw portion 202a screwed into the female screw portion 201a in the middle portion thereof and is attached so as to be movable in the vertical direction. The moving operation is performed by a spanner engaging portion 202b formed on the lower end of the lower centering shaft 202.
It is carried out by hooking a spanner (not shown) on the lower centering shaft 202 and rotating the lower centering shaft 202 through the spanner.

A centering head 203 is integrally provided on the upper end of the lower centering shaft 202. The head 203 is slidably fitted in the center hole 139, and has a taper portion 203a having a tapered tip which is fitted in a center hole 137, which will be described later, so that the head 203 can be inserted and removed.

An upper punch pressure roller 50 is attached at a position corresponding to the lower punch pressure roller 26 of the upper frame 23. A turntable support means 51 for supporting a turntable unit, which will be described later, is attached to the center of the upper frame 23. The supporting means 51 has an upper centering shaft 52 that is prevented from rotating with respect to the upper frame 23 by a key and penetrates in the up-down direction, and a central screw hole. The screw hole is formed on the upper centering shaft 52. The worm gear 53 is provided so as to be meshed with the shaft portion, the worm 54 is meshed with the gear 53, and the drive unit 55 having a motor capable of rotating the worm 54 in the forward and reverse directions is formed. There is. The upper centering shaft 52 is the main shaft 1.
The lower end portion of the upper centering shaft 52, which is arranged on the axis of 30, has a tapered portion 52a which is tapered toward the tip.

When the motor of the drive unit 55 of the turntable support means 51 is rotated in the normal direction, the worm 54 is rotated in conjunction with this, and the worm gear 53 is decelerated. As a result, the rotation-stopped upper centering shaft 52 is moved downward through the engagement with the worm gear 53, so that the taper portion 52a thereof projects from the lower surface of the upper frame 23. On the contrary, when the motor of the drive unit 55 is reversely rotated, the upper centering shaft 52 is raised in the opposite manner to the above, and the taper portion 52a thereof is retracted into the upper frame 23. Incidentally, the turntable support means 51
In place of the above configuration, the upper centering shaft 52 may be connected to a piston rod of a hydraulic cylinder that can be moved up and down.

The lower portion of the upper frame 23 is provided with a punch operating recess 23a for taking in and out an upper punch which will be described later, and a pair of stopper protrusions is provided on a vertical wall surface 23b located below the punch operating recess 23a. The portion 56 is provided so as to project. As shown in FIG. 5, the pair of stopper protrusions 56
The stopper projections 56 have an inclined surface 56a so that they are spaced apart from each other by a predetermined distance, and the mutual distance gradually increases toward the tip thereof.

The punch operating recess 23a and the stopper protrusion 5
6 is provided on the opposite side of the upper punch pressure roller 50 with the upper centering shaft 52 as a boundary. Then, the side opposite to the upper and lower rollers 26, 50 of the main body frame 21 with the main shaft 130 and the upper centering shaft 52 arranged on the same axis as a boundary is opened, or a frame pillar 24 on the same side is provided with a space between the pillars. When a closing door member (not shown) is attached, this door member is opened to allow the turntable unit described later to be taken in and out.

Although not shown, various sensors and other electric parts for knowing the molding operation are attached to the upper frame 23. In addition to the electric wiring connected to these electric parts, an air pipe, a dust collecting pipe, or the like provided as needed is attached across both the upper and lower frames 22 and 23.

Both upper and lower frames 22 of the main body frame 21,
A turntable unit 161 is arranged between 23 in such a manner that it can be inserted into and removed from the body frame 21 in the lateral direction. This unit 161 includes a turntable 162 and an upper punch cam means 63.
, A driving force receiving body 164, and an upper positioning cylinder 66 having a tapered hole 65.

The turntable 162 has a die mounting portion 68 at an axially intermediate portion thereof and an upper punch mounting portion 69 facing the upper surface thereof.
And a lower punch attachment portion 70 that faces the lower surface of the die attachment portion 68.
It has and. Each of these mounting portions 68 to 70 extends to the outside of the turntable 162, and
2 are continuously provided in the circumferential direction.

A mortar 71 is attached to the mortar mounting portion 68, and a turret 162 is provided.
The mortars 71 are mounted so as to be positioned on the same circle drawn around the center axis of the above, and these mortars 71 are separated from each other on the same circle by a predetermined distance. In addition, 71a in FIG. 6 and FIG.
Indicates a die attachment hole into which the die 71 is fitted and attached, and the die 71 is fixed by a die stopper bolt (not shown) that is detachably screwed from the outer peripheral surface of the die attachment portion 68. Therefore, by removing this bolt, it can be removed from the die mounting portion 68.
A middle 71b indicates a die stopper hole formed of a screw hole through which a die stopper bolt is passed. A plurality of upper punch mounting holes 72 are provided in the upper punch mounting portion 69 so as to face the mortar 71, and upper punches 73 are vertically slidably passed through the punch mounting holes 72, respectively.

A plurality of lower punch mounting holes 74 are provided in the lower punch mounting portion 70 so as to face the die 71, and lower punches 75 are vertically slidably passed through these punch mounting holes 74, respectively. There is. The tip of each punch 75 is inserted into the die hole of the die 71 from below to form the die bottom. Each lower punch 75 is slid up and down by the lower punch cam means such as the lowering device 35.

A so-called upper cam is adopted as the upper punch cam means 63. The upper cam 63 has a circular planar shape, and has a cam portion 63a that is a convex portion that is continuous over the entire outer peripheral portion. The upper cam 63 is the turntable 1
It is rotatably attached to the upper end of 62 via a bearing 76. A ring-shaped waterproof seal 10 such as an oil seal or a dust seal is provided between the upper cam 63 and the turntable 162.
1 is provided, thereby waterproofing the turntable unit 161.

The upper cam 63 has a convex portion 77 protruding upward, and the convex portion 77 is inserted between the pair of stopper convex portions 56 with almost no space. The engagement of the protrusions 77 and the stopper protrusions 56 prevents the upper cam 63 from rotating.

The cam portion 63a on which the upper punch 73 slides has an ascending region portion and a descending region portion, which are not shown. Therefore, when the turntable 162 is rotated, the upper punch 74 slides on the cam portion 63a of the upper cam 63 held in a stationary state, and the upper punch 74 is moved up and down.

A driving force receiving body 164 is bolted to the center of the lower end of the turntable 162. This driving force receiving body 1
64 has a disk shape slightly larger than the driving force transmission body 135, and its lower surface is provided so as to be flush with the lower surface of the rotary disk 162. At the center of the receiving body 164, one meshing groove portion 1 fitted to the meshing convex portion 136 is formed.
78 is provided. The groove portion 178 extends in the radial direction of the driving force receiving body 164 and is open to the lower surface and the peripheral surface of the driving force transmitting body 135, respectively.

The lower surface of the turntable 162 has an engaging groove portion 17
8 is a tapered groove portion 162c connected to both ends (see FIG. 2)
Are formed respectively. These groove portions 162c are the turntable 1
The lower surface and the peripheral surface of 62 are opened respectively. Therefore,
The groove portions 162c and 178 are continuously provided in a straight line. The opposed side surfaces of the groove portion 162c and the opposed side surfaces 178a of the meshing groove portion 178 are each formed as a tapered surface, and the distance between them is gradually narrowed toward the groove bottom.

The peripheral surface of the turntable 162, for example, the die mounting portion 6
The die 71, the upper punch 73, the lower punch 7 and the lower punch 7 are attached to the circumferential surface of the upper punch 8 and the circumferential surface of the upper punch mounting portion 69 or the lower punch mounting portion 70.
A punching number corresponding to No. 5 is attached. One of them, for example, the NO1 punching number display M corresponds to one end of the engaging groove portion 178 in the longitudinal direction in a plan view of the rotary disk 162 and the driving force receiving body 164. As shown in FIG. Is provided. This punching number display M indicates that the rotary disk unit 161 is provided for the cleaning device described later.
Is used as an alignment mark for alignment for setting the in a predetermined direction. Note that FIG.
Although the number of punches is shown as an odd number, the number of punches may be even.

A centering hole 137 is provided at the center of the driving force receiving body 164. Centering hole 137
Both ends of the groove engage with the upper surface of the driving force receiving body 164 and the groove portion 17
The centering hole 137 is tapered toward the upper end while being opened at the bottom of the groove of FIG. The driving force receiving body 164 and the driving force transmitting body 135 form a kind of meshing clutch. In addition, the meshing convex portion 136 and the meshing groove portion 178 which are fitted with each other.
Is not limited to one each, and a plurality of them may be provided in parallel to these.

The upper positioning cylinder 66 is fitted in the central portion of the upper cam 63 and bolted. This positioning tube 6
6 has a taper hole 65 that tapers gradually from the upper end to the lower end. The tapered portion 52 a of the upper centering shaft 52 is removably fitted into the tapered hole 65. The axis of the tapered hole 65 and the axis of the main shaft 130 are aligned with each other, and the upper centering shaft 52 is opposed above the tapered hole 65.

In FIG. 1 and FIG. 2, reference numeral 89 denotes a powder feeder detachably supported by a fixing member (not shown), the opened lower surface of which is in contact with the upper surface of the die mounting portion 68. The powder supplied to the mortar 71 is accommodated inside the feeder 89. Further, the tableting machine A includes a scraper (not shown) provided so as to be in contact with the upper surface of the die mounting portion 68.

The assembled state of the rotary tabletting machine A having the above construction is shown in FIGS. 1 and 2. In this state, the driving force transmitting body 135 and the driving force receiving body 164 that form the meshing clutch have their meshing convex portions 136.
And the meshing groove portion 178 are meshed and connected. Therefore, the rotary disk unit 16 is attached to the main shaft 130.
1 is positioned in a direction orthogonal to the longitudinal direction of the meshing convex portion 136 and the meshing groove portion 178.

The centering shaft 52 of the upper rotary disc support means 51 is in the lowered position shown in FIG.
The tapered portion 52 a is projected from the lower surface of the upper frame 23 and is arranged at a position where it is closely fitted to the tapered hole 65 of the upper positioning cylinder 66. Further, the lower centering shaft 202 forming the lower rotary disk support means is in the raised position shown in FIG. 1, and the taper portion 203a thereof penetrates the center hole 139 and is projected upward, and the centering hole 137 of the driving force receiving body 164 is formed. Is tightly fitted to.

Therefore, the rotary disk unit 161 is centered with respect to the main shaft 130 by the upper and lower rotary disk supporting means 51 and 202, and their axes are aligned. The rotary tableting machine A in such an assembled state carries out one molding cycle every time the rotary table 162 is rotated once to manufacture tablets as follows. In this tableting, the driving force transmission body 13 fixed to the main shaft 130 is used.
5, the lower centering shaft 202, the upper cam 63 of the rotary disc unit 161, and the portion except the upper positioning cylinder 66 attached thereto are rotated together with the main shaft 130.

That is, when the die 71 is carried to the powder supply position, the powder in the powder feeder 89 is sucked into the die 71 as the lower punch 75 is lowered by the lowering device 27. As the lower punch 75 subsequently carried to the weighing position is lifted by the weight adjusting rail, the excess powder in the mortar 71 is discharged into the powder feeder 89 and returned, and a predetermined amount of powder remains in the mortar 71. Be done. After this weighing, when the die 71 is conveyed to the compression molding position, the upper punch 73 and the lower punch 75 are moved by the upper and lower punch pressure rollers 50 and 26 toward each other, and the powder material in the die 71 is compressed. To be done.

After that, since the mortar 71 is carried to the push-up position, first, the upper punch 73 is raised by the raising region of the cam portion 63a of the upper cam 63 and is pulled out of the mortar 71. Next, as the lower punch 75 is lifted by the push-up rail, the molded product (tablet) in the die 71 is pushed out onto the die 71. Finally, when the die 71 is carried to the take-out position, the extruded molded product hits the scraper, is separated from the lower punch 75, and is taken out of the turntable 162.

As described above, one molding cycle is completed every time the mortar 71 is rotated once by the turntable 162.
Hereinafter, this molding cycle is repeated to manufacture tablets one after another.

Next, the procedure for removing the turntable unit 161 from between the upper and lower frames 22 and 23 for cleaning and external setup will be described. First, the lowering device 27, which is in the take-out direction of the turntable unit 161, and interferes with the take-out.
A part of the cam holder 29 and the powder feeder 89 on which the like is placed.
Etc. are retracted to a position where they do not interfere with the removal of the turntable unit 161, or are removed. Further, when the turntable unit 161 is taken out, the lower punch 75 drops due to its own weight. Therefore, the turntable unit 161 is manually rotated to remove all the lower punches 75 in advance at the lower punch attaching / detaching portion.
Further, among the upper punches 73, at least one or a plurality of adjacent upper punches 73 arranged corresponding to the longitudinal direction of the engaging groove portion 178 of the driving force receiving body 164 are removed. Alternatively, all upper punches 73 may be removed. To remove the upper punch 73, manually rotate the turntable unit 161 to remove the punch 2
It is carried out by pulling the upper punch 73 upward in 3a.

After that, the turntable unit 161 is manually rotated so that the portion where the upper punch 73 is removed is disposed directly below the upper punch pressure roller 50. Then, the meshing convex portion 136 and the meshing groove portion 17 of the meshing clutch.
The longitudinal direction of 8 corresponds to the direction in which the turntable unit 161 is taken in and out.

Next, by operating the rotary disc support means 151, the upper centering shaft 52 is raised so that the tapered portion 52a of the shaft 52 is retracted into the upper frame 23. Further, the lower centering shaft 202 is rotated and lowered via a spanner, and the centering head 203 is moved to the centering hole 137 of the driving force transmission body 164.
Immerse yourself in.

The state in which the above pretreatment is completed is shown in FIG. Next, a fork of a forklift (not shown) is inserted from the side of the body frame 21 (the insertion direction is indicated by an arrow E in FIG. 3), and the fork is raised to support, for example, the lower surface of the turntable 162. Then retract the forklift.

Accordingly, in the turntable unit 161, first, the engagement convex portion 136 of the drive force transmission body 135, the engagement groove portion 178 of the drive force receiving body 164, and the turntable 162.
It can be pulled out of the main body frame 21 in the direction of arrow F in FIG. This withdrawal is realized by the continuous groove portions 178 and 162c opening both ends in the longitudinal direction thereof, and the convex portion 77 of the upper cam 63 is not disturbed by the pair of stopper convex portions 56. It is realized by getting out of the space.

When the rotary disk unit 161 is pulled out in the lateral direction, only this unit 161 may be slightly lifted by a forklift and pulled out in the direction of arrow F. The slight lifting in this case is combined with the fact that the upper surface 63b of the upper cam 63 of the rotary disk unit 161 is opposed to the lower surface 23b of the upper frame 23 with a gap therebetween, so that the upper punch 73 of This is possible because a gap of about 5 mm is generally secured between the upper punch pressure roller 50 and the upper punch pressure roller 50. When the turntable unit 161 is slightly lifted to pull out, the sliding resistance in the dog clutch disappears, so that the pulling operation can be performed more easily.

When the turntable unit 161 removed as described above is attached to the main body frame 21 from the lateral direction, the turntable unit 161 supported by a forklift (not shown) is subjected to the above-mentioned taking-out procedure. The procedure may be reversed.

Even in this case, the meshing groove 178 of the driving force receiving body 164 and the groove 162c of the rotary disk 162 are fitted in the meshing convex portion 136 of the driving force transmitting body 135.
The rotating disk unit 161 may be inserted while being engaged with and sliding. Alternatively, after inserting the turntable unit 161 with a slight gap provided between the groove portions 178 and 162c and the meshing convex portion 136, the unit 161 is lowered and the meshing groove portion 178 and the meshing convex portion 136 are inserted. The engagement can also be performed by connecting the dog clutches.

In any case, the engagement between the engagement groove portion 178 and the engagement protrusion portion 136 positions the drive force receiving body 164 and the drive force transmitting body 135 in the direction intersecting the longitudinal direction at right angles. Then, by the centering operation by the upper and lower turntable support means 51, 202,
The tapered portion 52a of the upper centering shaft 52 has the tapered hole 6
5 and the tapered portion 203a of the lower centering shaft 202 is fitted into the centering hole 137. Therefore, the rotary disk unit 161 is centered without being misaligned with the main shaft 130.

When the rotary disk unit 161 is centered as described above, the upper rotary disk support means 51 is first operated, and then the lower centering shaft 202 as the lower rotary disk support means is lifted. Is carried out. Accordingly, it is possible to prevent the turntable unit 161 from being pushed upward from the predetermined height position due to the raising operation of the lower centering shaft 202.

According to the rotary tableting machine A having the above-mentioned structure, the time and effort required to move the upper frame 23 of the main body frame 21 when the rotary disk unit 161 is inserted or removed, that is, the upper frame 23 is removed from a predetermined position, rotated or released upward. There is no need for trouble. Along with this, there is no need to remove and attach the electric wires, pipes and the like extending over the upper and lower frames 22 and 23 one by one. Therefore, the work involved in inserting and removing the turntable unit 161 into and from the body frame 21 can be reduced.

In addition, the turntable unit 161 has a small drive force receiving body 164 provided so as to form a part of the turntable 162 in addition to the turntable 162 and the upper cam 63, but the turntable 162 is provided. The configuration does not include a supporting shaft and other large-sized components that support the rotary disk 162. Therefore, the number of parts of the turntable unit 161 is small, the structure thereof is simple, and accordingly, the turntable unit 161 can be made small and lightweight.

Since the turntable unit 161 is small and lightweight as described above, the work involved in inserting and removing the turntable unit 161 is small, so that the main body frame 2
The workability of inserting / removing the turntable unit 161 from the side can be improved.

Moreover, as described above, the turntable unit 16
Although the upper frame 23 of the main body frame 21 is not moved even though 1 is inserted / removed for external setup, the main body frame 21 can always maintain a rigid state with high rigidity and being assembled. Therefore, since the performance of supporting the reaction force of the molding pressure during the compression molding is large,
It is suitable not only for compression molding with a small molding pressure but also for compression molding with a large molding pressure.

Further, in the structure of the rotary tableting machine A, the engaging convex portion 36 of the driving force transmitting body 135 and the engaging groove portion 178 of the driving force receiving body 164 are gradually narrowed toward the upper end. Since the double-sided taper structure is used, no gap is generated in these fittings.
As a result, the driving force transmission body 135 to the driving force receiving body 68
Power can be reliably transmitted to. Moreover, since no gap is formed between the meshing convex portion 36 and the meshing groove portion 178 as described above, the meshing clutch may vibrate due to the intermittent load acting on the rotary disk 162 during the compression molding. Absent. Therefore, not only the damage of the dog clutch is small, but also the vibration of the rotary disk 162 is small, so that it is possible to reduce adverse effects on the accuracy of powder weighing and the like.

In the rotary tableting machine A, the open ends in the extending direction of the engaging groove portions 178 may be one end instead of both ends. Similarly, in this tableting machine A, the driving force receiving body 164 is embedded in the lower end portion of the rotating disc 162 in order to reduce the height dimension of the rotating disc unit 161, but the driving force receiving body 164 is At least the portion provided with the engaging groove may be provided so as to project downward from the lower surface of the rotary disk 162. In this case, it is not necessary to provide the groove portion 162c on the rotary disc 162, and thus the number of processing steps for the rotary disc 162 can be reduced.

Next, a washing device B for automatically washing the turntable unit 161 taken out from the rotary tableting machine A having the above construction.
The configuration will be described with reference to FIGS. 6 to 13. 6 and 7 are cross-sectional views schematically showing the configuration of the main part of the cleaning device B. The device frame indicated by 321 in FIG. 6 is
A lower frame 322, an upper frame 323 disposed above the lower frame 322, and four frame pillars (not shown) that connect the four corners of the upper and lower frames 322 and 323, respectively.

The apparatus frame 321 has a cleaning chamber 321a between the upper and lower frames 322 and 323, and an opening / closing door 324 which is watertightly closed is attached to at least one side surface facing the chamber 321a. . The opening / closing door 324 is pivotally attached to the apparatus frame 321 by a hinge, and opens and closes the cleaning chamber 321a by rotating around the hinge. The opening / closing door 324 may be detachably attached to the apparatus frame 321, and the cleaning chamber 321a may be opened / closed by the attachment / detachment. Further, the opening / closing door 324 is the cleaning room 3
It is preferable to have a see-through window for seeing through the inside of 21a.

At the center of the upper wall of the lower frame 322, there is bolted a substantially cylindrical support body 325 which is arranged so as to project below the cleaning chamber 321a. A main shaft 330 is arranged in the support body 325 so as to penetrate through the support body 325 in the axial direction, and the main shaft 330 is rotatably supported by a pair of bearings 331 provided inside the support body 325.

A driven gear 332 is attached to the lower frame 322, in other words, to the lower end of the main shaft 330 projecting into the machine chamber 322a, and a gear 332 having a smaller diameter than that of the driven gear 332 is meshed with the gear 332. The driven gear 332 is fixed to the main shaft 330 by a plurality of screws 401 that pass through a fitting tubular portion 332a provided in the center thereof. The through hole 402 through which the screw 401 passes is the fitting cylindrical portion 332a.
It is formed to be long in the circumferential direction, so that the mounting position of the driven gear 332 with respect to the main shaft 330 in the axial direction can be finely adjusted.

The drive gear 333 is a motor 40 with a reducer built in the machine room 322a via a clutch (not shown).
Connected to 3. Therefore, when the power of the motor 403 is supplied to the drive gear 333 via the clutch (not shown), the driven gear 332 is decelerated and rotated, so that the main shaft 330 is rotated together with the gear 332. In addition,
In the disengaged state of the clutch or the stopped state of the motor 403, the driven gear 332 can be manually operated in conjunction with the operation of a manually operated handwheel (not shown).

A rotary table 335 is provided on the upper end of the spindle 330.
Are connected or integrally formed. The rotary table 335 has a circular planar shape, and has a diameter smaller than a circle drawn with a distance from the center of the rotary table 162 to the lower punch mounting hole 74 as a radius. As shown in FIG. 8, the rotary table 335 has an O-ring 404 attached to the upper surface of the peripheral portion thereof, and a tapered meshing ridge 336 protruding integrally upward from the inside of the ring 404. Have

The meshing protrusion 336 is the rotary table 335.
In the radial direction, and both side surfaces 336a thereof are inclined with respect to each other. As a result, the meshing ridge 336 is tapered toward the tip thereof. At the center of the rotary table 335, a center hole 339 is provided that penetrates in the thickness direction of the rotary table 335 and opens to the upper surface of the engaging projection 336.

The rotary table 335 is fitted in a recess 334 formed in the upper end of the main shaft 330 and bolted to the main shaft 330. 6 is a ring-shaped waterproof seal, which prevents water from entering the support body 325. On the peripheral portion of the rotary table 335, there are meshed ridges 3
An alignment mark 335a (see FIGS. 7 and 8) is provided at a position corresponding to one longitudinal end of 36. The mark 335a serves as a guide when the turntable unit 161 is placed on the turntable 335, and the punching number display M of N01 used as the alignment mark is aligned.

A central hole 405 is provided at the center of the main shaft 330. The upper end of the central hole 405 is opened to the bottom surface of the recess 334, the lower end is opened to the lower end of the main shaft 330, and the female screw portion 405a is formed in the middle portion.

A lower centering shaft 406 is passed through the center hole 405. The shaft 406 has a male screw portion 406a screwed into the female screw portion 405a in the middle thereof, and is attached so as to be movable in the vertical direction. The moving operation is performed by hooking a spanner (not shown) on a spanner engaging portion 406b formed at the lower end of the lower centering shaft 406 and rotating the lower centering shaft 406 via the spanner.

A centering head is provided at the center of the rotary table 335. For example, in this embodiment, a centering head 407 is integrally provided at the upper end of the lower centering shaft 406 arranged at the center of the rotary table 335, and the head 407 is slidably fitted in the center hole 339. I am combining. This centering head 407
The upper part of the is a taper portion 407a having a tapered tip, which is fitted into the centering hole 137 so as to be inserted and removed from the lower side.

As shown in FIG. 6, the driven gear 332 is provided with one detected portion 411 consisting of a small hole or a protrusion corresponding to the alignment mark 335a. A reference position sensor 412 that detects the detected portion 411 is disposed near the driven gear 332. A proximity sensor such as a magnetic sensor is used as the sensor 412.

A rotary encoder 413 is attached to the gear shaft supporting the drive gear 333. The rotation information of the main shaft 330 detected by the encoder 413 is stored in, for example, a control panel provided outside the machine room 322a. It is supplied to the rotation angle control unit 414. This control unit 414
Is supplied with the detection information of the reference position sensor 412 and the number of punches manually input as an initial value by an input unit 415 such as a keyboard provided on the control panel and operable from the outside. It

The rotation angle control unit 414 has an intermittent rotation mode and a continuous rotation mode. In the intermittent rotation mode, the intermittent rotation angle is calculated by dividing 360 ° by the input number of punches, and then the motor 403 is operated via the motor driver 416, and the reference position sensor 412 is operated based on the operation. When the detection information of the detected portion 411 is input, a reference for intermittently rotating the spindle 330 is set. Further, this control unit 414 determines from the rotation information input from the rotary encoder 413 from this point onward based on the spindle 3
The rotation angle of 30, that is, the rotation angle of the rotary table 335 is calculated, and the operation of the motor 403 is stopped for a predetermined time each time the rotation angle reaches the intermittent rotation angle. Thereby, the main shaft 330 is rotated by the intermittent rotation angle.
At the same time, the rotary table 335 is driven to rotate. This intermittent rotation is at least the rotary table 335.
It is carried out once.

The motor 403 and the drive gear 33
3, driven gear 332, main shaft 330, rotary encoder 413, motor driver 416, and rotation angle control unit 4
Reference numeral 14 constitutes a table drive means for intermittently rotating the rotary table 335 at the same angle as the arrangement pitch of the plurality of dies 71 attached to the rotary disk 162. Further, according to this driving means, since the rotation angle is set according to the number of punches inputted from the input unit 415, even when cleaning the turntable unit 161 having a different number of punches, this cleaning device B is used. Can be applied and is highly versatile.

Further, the rotation angle control section 414 controls the operation of the motor 403 so as to continuously rotate the rotary table 335 together with the main shaft 330 in the drying process or the like performed after the intermittent rotation is performed, A continuous rotation mode is implemented.

As shown in FIG. 9, the machine room 322a.
A cleaning unit 421 is provided inside. As shown in FIG. 11, this unit 421 has a configuration in which a pump 423 is connected to the outlet of a cleaning liquid tank 422 in which the cleaning liquid is stored, and an electromagnetic on-off valve 424 is connected to the outlet of this pump 423. As the cleaning liquid, warm water or warm water containing detergent is used. A liquid supply hose 425 is connected to the open / close valve 424.

As shown in FIG. 10, a hollow cylindrical convex portion 426 protruding upward is provided on a part of the upper frame 323. A cleaning nozzle 427 is provided in the cylindrical convex portion 426, and is located on an axis passing through the centers of the die attachment hole 71a, the upper punch attachment hole 72, and the lower punch attachment hole 74 that face each other in the vertical direction. . As shown in FIG. 11, the nozzle 427 has a hollow cylindrical shape extending in the vertical direction, and the inside thereof has a cleaning liquid passage 429.
Has become. The liquid supply hose 425 is connected to the upper end of the cleaning liquid passage 429.

The cleaning liquid passage 429 reaches the lower end of the cleaning nozzle 427 and is closed at this lower end. A large number of injection holes 430 are opened at intervals in the circumferential direction on the outer peripheral surface of the lower end portion of the cleaning nozzle 427. As shown in FIG. 12, these injection holes 430 are inclined in the same direction with respect to a line extending radially in the radial direction of the cleaning nozzle 427. These injection holes 430
The pressure of the cleaning liquid sprayed from is 30 Kg / cm ² or more.

As shown in FIG. 11, a cleaning nozzle 427.
A slider 431 is screwed into the upper end of the. The slider 431 is a ceiling plate 432 that closes the upper surface of the cylindrical protrusion 426.
The slide shaft 433 hangs from the slide shaft 433. The cleaning nozzle 42 is installed on the ceiling plate 432.
Air cylinder 4 as nozzle driving means for raising and lowering 7
34 is attached. The piston rod 435 of the cylinder 434 penetrates the ceiling plate 432 and passes through the slider 43.
It is connected to 1.

Therefore, when the piston rod 435 is moved up and down, the cleaning nozzle 427 moves to the slide shaft 433.
Is moved up and down by using as a guide, and is removably inserted into the die attachment hole 71a, the upper punch attachment hole 72, and the lower punch attachment hole 74 which face each other in the vertical direction. Cleaning nozzle 427
At the standby position where is stored in the cylindrical convex portion 426, the nozzle 427 is separated from above the turntable unit 161 placed on the turntable 335 and waits.

The cleaning liquid is continuously sprayed while the cleaning nozzle 427 moves up and down and passes through the die mounting hole 71a, the upper punch mounting hole 72, and the lower punch mounting hole 74 which are vertically opposed to each other. However, the injection timing is
The position of the slider 431 is detected by a large number of detection switches 436 arranged along the slide shaft 433, and the opening / closing timing of the opening / closing valve 424 is controlled by the detected position signal.

The cleaning chamber 3 is provided on the wall surface facing the cleaning chamber 321a.
21A, a fixed cleaning liquid conduit 437 is attached, for example, through the upper frame 323 at a position where it does not interfere with the loading / unloading of the turntable unit 161. The cleaning unit 42 is connected to this conduit 437 via another liquid supply hose.
The cleaning liquid is introduced from 1. The cleaning liquid conduit 437 is arranged vertically outside the rotary disk unit 161 mounted on the rotary table 335 and has first to third injection nozzles 438 to 440.

The first injection nozzle 438 is provided so as to face the recess between the die mounting portion 68 and the lower punch mounting portion 70 of the rotary disk 162, and to inject the cleaning liquid into this recess. 439 is a mortar mounting portion 68 of the turntable 162.
It is provided so as to face a recess between the upper punch mounting portion 69 and the upper punch mounting portion 69 and to inject the cleaning liquid into the recess. The third injection nozzle 440 is provided so as to face the upper punch mounting portion 69 and the peripheral portion of the upper cam 63 and inject the cleaning liquid onto these.

A drain port 441 for discharging the cleaning liquid in the cleaning chamber 321a to the outside of the cleaning chamber 321a is provided on the bottom of the cleaning chamber 321a, preferably on the upper wall of the lower frame 322.

As shown in FIG. 9, a drying unit 451 is built in the machine room 322a. This unit 4
Reference numeral 51 includes a heater that heats the air sucked from the outside of the machine room 322a, and a fan motor that blows dry air formed by this heating and having a temperature higher than room temperature. The dry air supplied from the drying unit 451 is sent into the cleaning chamber 321a through an inflow port 452 provided in the lower portion of the wall facing the cleaning chamber 321a. Cleaning room 321a
An exhaust port 453 is provided in the upper part of the wall facing the above, for example, the upper frame 322.

A pipe provided with an electromagnetic on-off valve (not shown) in the middle is connected to each of the inflow port 452 and the exhaust port 453, and these electromagnetic on-off valves are closed during the cleaning operation, and at the same time the drying operation is performed. At this time, it is opened so that dry air can pass through the inside of the cleaning chamber 321a. A dustproof filter is attached to the exhaust port 453 without connecting an exhaust pipe with an opening / closing valve to the cleaning chamber 32.
Dust may be prevented from entering the inside of 1a.

On the side wall or opening / closing door 324 facing the cleaning chamber 321a, the turntable unit 1 for the cleaning chamber 321a is provided.
At the position where 61 does not get in and out,
The fourth air nozzles 454 to 457 are attached.
These nozzles 454 to 457 are arranged so as to face the portions of the rotary disk unit 161 mounted on the rotary table 335 where the cleaning liquid is likely to remain, and to blow away the residual cleaning liquid in these portions.

That is, the first air nozzle 454 blows air into the gap between the upper punch mounting portion 69 of the turntable unit 161 mounted on the rotary table 335 and the upper cam 63. It is diagonally arranged above the peripheral portion of 69. The second air nozzle 455 blows air to the lower corner portion of the recess between the die attachment portion 68 and the upper punch attachment portion 69, and is obliquely arranged above the die attachment portion 68. The third air nozzle 456 blows air to the lower corner portion of the recess between the die mounting portion 68 and the lower punch mounting portion 70, and is obliquely arranged above the lower punch mounting portion 70. The fourth air nozzle 457 blows air to the mortar retaining holes 71b of the mortar mounting portion 68, and is arranged at a position facing the mortar retaining holes 71b. Dry air formed by the drying unit 451 is supplied to the first to fourth air nozzles 454 to 457.

Next, the cleaning of the rotary disk unit 161 by the rotary disk unit cleaning device B having the above structure will be described. As described above, the turntable unit 161 taken out from the rotary tabletting machine A by the forklift has the opening / closing door 3
In the opened state of 24, the rotary table 335 is inserted into the cleaning chamber 321a of the cleaning device B using the same forklift, and the meshing groove portion 178 of the unit 161 is fitted into the meshing protrusion 336 of the rotary table 335. Placed on top. It should be noted that this placement is based on the turntable 1
This may be performed while sliding the lower surface of 62 onto the upper surface of the rotary table 335, or after inserting the turntable unit 161 so that the engaging groove portion 178 faces and faces directly above the engaging convex ridge 336. , This unit 161 may be lowered.

At this time, the alignment mark 335a of the turntable 335 is aligned with the punching number display M of N01 of the turntable unit 161, and the turntable unit 161 moves to the cleaning chamber 321.
Since it is inserted into as, the turntable unit 161 is placed on the turntable 335 in a predetermined orientation. Thereby, as shown in FIG. 13, not only when the number of punches is even, but also when it is odd, the lower punch mounting hole 70 of the turntable unit 161 and the meshing ridge 336 of the rotary table 335 are formed. It is possible to correspond these properly without the position being changed.

As described above, the engagement groove 178 and the engagement ridge 336 forming the engagement clutch are fitted to each other, whereby the rotary disk unit 161 can receive the rotational power of the table 335 with respect to the rotary table 335. Are linked together. In this connection, since the mesh groove portion and the mesh convex portion are both tapered, there is no rattling in the fitting, and these fittings cause the rotary table 335 to rotate relative to the rotary table. The unit 161 can be positioned in the radial direction orthogonal to the direction in which the mesh groove 178 and the mesh ridge 346 extend.

Next, the lower centering shaft 406 is rotated using a spanner (not shown) and moved upward. Thereby, the centering head 40 of this shaft 406
7 projects upward from the center of the meshing projection 336 and fits into the centering hole 137 provided in the center of the driving force receiving body 164 of the rotary disk unit 161. Since both the head portion 407 and the centering hole 137 have a tapered shape that becomes narrower toward the upper side, by fitting them, a direction orthogonal to the radial direction, in other words,
The rotary disk unit 161 can be positioned with respect to the rotary table 335 by relatively sliding the meshing groove 178 and the meshing protrusion 336 in the extending direction.

That is, since the turntable unit 161 can be centered and placed on the turntable 335 by positioning in the two orthogonal directions as described above, the respective mounting holes 71a, 72, 7 formed in the turntable unit 161.
The rotation locus of No. 4 can be accurately positioned with respect to the cleaning nozzle 427 that is moved up and down.

After that, a waterproof rubber lid 461 (see FIG. 6) having a plug portion fitted into the taper hole 65 of the turntable unit 161 on the turntable 335 is attached. If necessary, the turntable unit 161 is manually turned together with the turntable 335 to remove all of the upper punch 73 and the die 71 attached to the unit 161. The removal of these and the attachment of the lid 461 may be performed in advance at a stage before the rotary disk unit 161 is inserted into the cleaning chamber 321a.

As described above, after the work of setting the turntable unit 161 in the cleaning chamber 321a is completed, the opening / closing door 324 is closed and then the cleaning operation is started. First, the motor 40
As the rotary table 335 on which the rotary disk unit 161 is mounted is rotated together with the spindle 330, the reference position sensor 412 detects the detected portion 411. Then, the rotation of the turntable 335 is temporarily stopped at that position. In this way, when the turntable unit 161 is rotated to the reference position, the set of die attachment holes 71a and the upper and lower punch attachment holes 72, 74 that face each other in the vertical direction with respect to the cleaning nozzle 427 accurately face each other. Positioned.

This positioning is performed along with the rotation stop operation associated with the detection of the reference position as described above, as well as the alignment marks M and 33 described above.
This can be realized by placing the turntable unit 161 in a predetermined orientation on the turntable 5a. When the number of punches is an even number, even if the rotary disk unit 161 is inserted on the rotary table 335 with either end of the meshing groove portion 178 in the longitudinal direction as the leading end, the above-described reference position can be detected. This can be achieved by the accompanying rotation stop operation.

After that, the cleaning unit 421 is operated, the cleaning liquid is supplied to each of the cleaning nozzles 427, and the air cylinder 434 is operated. for that reason,
The cleaning nozzle 427 is first lowered and is positioned immediately below the upper punch mounting hole 72 and the die mounting hole 71.
a and the lower pestle mounting hole 74 are inserted one after another, and then they are raised and similarly inserted through the respective mounting holes 72, 71a and 74 one after another, and then returned to the standby position and stopped. The cleaning nozzle 427 that is moved up and down in this way does not hit the rotary disc 162 based on the above-described positioning, and the die mounting hole 71a and the upper and lower punch mounting holes 7 formed in the rotary disc 162 are opened.
It is surely passed through 2, 74.

Therefore, the upper punch attachment hole 72, the die attachment hole 71a, and the lower punch attachment hole 74 are attached to the cleaning nozzle 4.
When 27 passes, the cleaning liquid sprayed from the spray hole 430 is sprayed on the inner surface of each mounting hole 72, 71a, 74 at high pressure, thereby cleaning the inner surface.

At this time, as shown in FIG.
The cleaning liquid sprayed from 30 is attached to each of the mounting holes 71a, 72,
A swirling flow flows in the circumferential direction along the inner surface of 74, and the swirling flow causes the cleaning liquid to uniformly contact the inner surfaces of the mounting holes 71a, 72, 74, and the pressure can automatically remove the adhered powder and dirt. . At this time, the injection timing of the cleaning liquid is controlled by the opening / closing operation of the opening / closing valve 424 which is operated based on the output from the detection switch 436 which detects the position of the slider 431.

At the same time, the other cleaning nozzles 438-4
Since the cleaning liquid from 40 is sprayed at a high pressure and is sprayed on the outer surface of the rotary disk unit 161, it is possible to remove powder, dirt and the like attached to the outer surface of the rotary disk 161. The cleaning liquid may be continuously ejected from the other cleaning nozzles 438 to 440.

Cleaning chamber 321 sealed as described above
The cleaning liquid sprayed into the inside a flows down to the bottom of the cleaning chamber 321a, and is discharged to the outside of the cleaning chamber 321a through the drain port 441.

When the cleaning nozzle 427 returns to the standby position as described above, the rotation angle control unit 414 causes the motor 40 to move.
3 is restarted or the clutch is connected and the main shaft 33
0 is rotated by a predetermined angle, and at the same time, the turntable unit 16
The rotary table 335 is rotated by the same angle with 1 and stopped. After that, the cleaning nozzle 427 is moved up and down again to repeat the above-described cleaning operation, and the cleaning by spraying the cleaning liquid from the other cleaning nozzles 438 to 440 is performed.

Such a cleaning operation is performed by the rotary table 335.
Repeated with intermittent rotation. When the rotary table 335 makes at least one rotation from the reference position, the above cleaning operation is stopped.

In the cleaning, the turntable unit 161
An annular waterproof seal 101 is provided between the turntable 162 and the upper cam 63, and the taper hole 65 of the upper cam 63 is sealed by a lid 461. The ring 404 waterproofs the lower surface of the turntable 162 and the turntable 335 which are in close contact with the ring 404. Therefore, the turntable unit 161
It is possible to prevent the cleaning liquid from entering the inside of the. Moreover,
The lid 46 is used to close the taper hole 65 of the rotary unit 161.
Since it was done in 1, the structure for waterproofing this part is quite simple.

After completion of this cleaning, the rotary table 335 is
Is continuously rotated and the drying unit 451 is operated. Then, air is sprayed from the air nozzles 454 to 457 to the rotary disk unit 161, so that the cleaning liquid remaining at the spraying position is rotated by the rotary disk unit 161.
Blown outside. Then, these air nozzles 454
The rotary disk unit 161 is forcibly dried by the dry air jetted from ˜457 and the dry air introduced into the cleaning chamber 321a from the inlet 452. The dried air is discharged to the outside of the cleaning chamber 321a through the exhaust port 453.

By such forced drying, the turntable unit 161 can be dried in a short time. Moreover, as described above, the residual cleaning liquid is blown off while performing forced drying,
In particular, since the cleaning liquid remaining in the die stopper holes 71b can be blown off, the drying time can be further shortened.

For the drying of the rotary disk unit 161 in the cleaning chamber 321a after cleaning, the opening / closing door 324 may be opened to allow natural drying, or the opening / closing door 324 may be opened to open from outside the cleaning chamber 321a. Air may be blown into the cleaning chamber 321a by a blower or the like to be dried.

In order to take out the rotary disk unit 161 from the cleaning chamber after the above drying, first, the lower centering shaft 406 is lowered, and its centering head 497 is positioned below the upper surface of the engaging projection 336. next,
The opening / closing door 324 is opened, a fork of a forklift (not shown) is inserted from the side of the cleaning chamber 321a, the fork is lifted to support, for example, the lower surface of the turntable 162, and then the forklift is retracted. Thereby, the turntable unit 161 can be pulled out to the outside of the cleaning chamber 321a. Instead of this procedure of pulling out, the rotary disk unit 161 may be lifted by a forklift more than the protruding dimension of the centering head 407 with respect to the upper surface of the meshing protrusion 336 and then pulled out.

As described above, the rotary disk unit cleaning device B
Is from the rotary powder compression molding machine A to the rotary disk unit 161.
Remove and wash externally. Therefore, it is not necessary to take strong waterproof and rust preventive measures for the rotary powder compression molding machine A, or even if such measures are necessary, it can be reduced.

In addition, when cleaning the turntable unit 161, the unit 161 can be removed to perform external setup. Therefore, the turntable unit 16 removed
Even during the cleaning period of 1, the other rotary disk unit that has already been externally set up can be set in the rotary powder compression molding machine A and the molding machine A can be operated. It helps to improve.

FIG. 14 shows the essential parts of the second embodiment of the present invention. The second embodiment is different from the first embodiment only in the structure for moving the lower centering shaft up and down and the structure for closing the taper hole of the upper cam.
4 has the same structure as that of the first embodiment shown in FIGS. 1 to 13 including the parts not shown in FIG. 4, the structures not shown in FIG. Are denoted by the same reference numerals as those in the first embodiment, and the description of their configuration and the description of the action and effect based thereon will be omitted. However, these same parts also form part of the configuration of the device of this embodiment. Is.

At the center of the upper frame 323, a turntable support means 351 for supporting a turntable unit 161 described later.
Is installed. The supporting means 351 has an upper centering shaft 352 which is prevented from rotating with respect to the upper frame 323 by a key and penetrates in the up-down direction, and a central screw hole, and the screw hole is formed on the upper centering shaft 352. Worm gear 353 provided in mesh with the shaft portion, and worm 3 meshed with this gear 353.
54, and a drive unit 355 having a motor capable of rotating the worm 354 in the forward and reverse directions. The upper centering shaft 352 is arranged on the axis of the main shaft 330, and the upper centering shaft 35
The lower end of 2 has a taper portion 352a that gradually tapers toward the tip.

In the turntable supporting means 351, when the motor of the driving portion 355 is rotated in the forward direction, the worm 354 is rotated in conjunction with it and the worm gear 35 is rotated.
3 is decelerated and rotated. As a result, the upper centering shaft 352, which has been prevented from rotating, is moved downward through the engagement with the worm gear 353, so that the tapered portion 35
2a is projected from the lower surface of the upper frame 323. On the contrary, when the motor of the drive unit 355 is rotated in the reverse direction, the upper centering shaft 352 is raised contrary to the above, and the taper portion 352a is retracted into the upper frame 323.

Incidentally, the rotary disc supporting means 351 may be constituted by connecting the upper centering shaft 352 to the ascending / descending piston rod of the hydraulic cylinder, instead of the above-mentioned constitution.
The taper portion 352a is fitted in the taper hole 65 of the upper cam 63 to seal the taper 65 hole. Therefore,
By operating the turntable support means 351 in a state where the turntable unit 161 is arranged in the cleaning chamber 321a, the upper centering shaft 352 is lowered, and the taper portion 352a of the upper cam 63 faces directly below. The tapered hole 65 is fitted into the tapered hole 65, whereby the upper portion of the rotary disk unit 161 can be centered and the tapered hole 65 can be closed. Since the rotary disk supporting means 351 is automatically operated prior to the cleaning, there is no possibility that the taper hole 65 is forgotten to be closed and the cleaning operation is performed.

The center hole 405 of the main shaft 330 is formed as a straight through hole, and a spring receiver 337 for closing the lower end of the center hole 405 is screwed into the lower end portion of the main shaft 330. A lower part of a lower centering shaft 406 that slides in the axial direction is fitted in the center hole 405, and a coil spring 338 is housed between the lower end of the shaft 406 and a spring receiver 337. ing. The coil spring 338 constantly urges the lower centering shaft 406 upward to cause the centering head 407 of the lower spring to project from the upper surface of the meshing protrusion 336, and when the downward load acts on the lower centering shaft 406, The lower centering shaft 406 is allowed to move downward after being deformed. 406c is the lower centering shaft 40
An upper limit position of the lower centering shaft 406 is determined by contacting a lower end surface of the rotary table 335 with a stopper formed by a collar, a step, or the like provided on the outer periphery of the middle portion of the rotary table 6.

In the structure in which the lower centering shaft 406 is biased by the coil spring 338, the rotary table 33 is provided.
5. When the turntable unit 161 is placed on the lower plate 5, the weight of the unit 161 is received and the lower centering shaft 4
When the turntable unit 161 is placed on the turntable 335, the lower centering shaft 4 is moved.
06 is less likely to get in the way. And the coil spring 3
Since the centering head 407 of the lower centering shaft 406 can be brought into close contact with the centering hole 137 of the turntable unit 161 by the urging force of 38, rattling between them, in other words, the meshing groove portion 178 and the meshing protrusion ridge. It is possible to eliminate rattling of the 336 in the longitudinal direction, and to mount the turntable unit 161 on the turntable 33.
Accurate centering with respect to 5. Moreover, since the lower centering shaft 406 is automatically moved up and down as the turntable unit 161 is attached and detached, it is not necessary to move the shaft 406 up and down for each operation.
The work of attaching and detaching the turntable unit 161 to and from the motor 35 can be facilitated.

The structure other than the above points is the same as that of the first embodiment. Therefore, also in the second embodiment, the initial object of the present invention can be achieved by the same operation as in the first embodiment.

FIG. 15 shows the essential parts of a third embodiment of the present invention. The third embodiment differs from the first embodiment only in the structure of the centering head and the structure for detecting the reference position of the rotary table, and the other structures are shown in FIG. 1 including parts not shown in FIG. Since the configuration is the same as that of the first embodiment shown in FIG. 13, the configurations not shown are substituted by FIGS. 1 to 13, and the same components shown are given the same reference numerals as those of the first embodiment. Then, although the explanation of the constitutions and the explanation of the action and effect based thereon will be omitted, these same portions also constitute a part of the constitution of the apparatus of the present embodiment.

The centering head portion 407 of the rotary table 335 is formed by the engaging ridge 33 of the table 335.
The upper surface of 6 is integrally projected. Therefore, in this embodiment, the turntable unit 1 is placed on the turntable 335.
When the unit 61 is attached or detached, the unit 161 is moved up and down by the height of the centering head 407 or more. Since the meshing protrusion 336 is integrated with the rotary table 335 in this way, the number of parts can be reduced, the structure can be simplified, and the processing of a hole penetrating the main shaft 330 in the axial direction thereof can be eliminated.

Further, a reference position detection plate 470 is fixed by a plurality of screws to the lower end surface of the main shaft 330 protruding into the machine room 322a. The detection plate 470 is a disc, and a detected portion 411 such as a hole or a projection opened on the peripheral surface is formed on the peripheral portion thereof. A through hole (not shown) through which the screw 471 of the detection plate 470 passes is formed in an arc shape along the circumferential direction, and the mounting position of the reference position detection plate 470 with respect to the spindle 330 is surrounded within the length range of these through holes. It can be finely adjusted in the direction. A reference position detection sensor 412 is arranged around the reference position detection plate 470 so as to closely face the outer peripheral surface thereof. By the fine adjustment, the positions of the reference position detection sensor 412 and the cleaning nozzle 427 can be accurately corresponded to each other, and the work can be easily performed.

The structure other than the above points is the same as that of the first embodiment. Therefore, also in the third embodiment, the initial object of the present invention can be achieved by the same operation as in the first embodiment.

Although each of the above-mentioned embodiments is constructed as described above,
The present invention is not limited to each of these embodiments. For example, in the rotary powder compression molding machine to which the present invention can be applied, the driving force receiving body of the rotary disk unit is provided with the engaging groove portion contrary to the respective embodiments, and the driving force transmitting body mounted on the main shaft is On the contrary to the respective embodiments, a meshing convex portion may be provided so that power is transmitted between the driving force transmitting body and the driving force receiving body. Therefore, the present invention can be applied to a rotary powder compression molding machine such as a rotary tableting machine having the following configuration.

A main body frame having a fixed lower frame and a fixed upper frame arranged above the main frame, a main shaft projecting above the lower frame, and a driving force transmission member provided at the upper end of the main shaft. A turntable unit that can be inserted into and removed from the body frame in the lateral direction and is arranged between the upper and lower frames, and a vertically movable tapered shape that is inserted into and removed from the turntable unit in the axial direction. A rotary disk supporting means for supporting the rotary disk unit disposed between at least one of the upper frame and the main shaft and having a tapered portion, the rotary disk unit being disposed between the upper and lower frames. The unit is a rotary disc that is rotated by receiving the rotational force of the main shaft, and an upper punch cover that is rotatably supported by the upper end of the rotary disc and is prevented from rotating with respect to the upper frame. A cam means, a taper hole provided in at least one of the cam means or the rotary disk and into which the taper portion is removably fitted, and a driving force receiving body provided in a lower end portion of the rotary disk. And at least one meshing member that extends in the radial direction or in parallel with this direction and has an end in the extending direction open to either one of the driving force transmitting body and the driving force receiving body. A rotary powder compression molding machine, characterized in that a groove portion is provided, and on the other hand, at least one meshing convex portion that can be put in and taken out along the longitudinal direction of the meshing groove portion is provided.

Therefore, the rotary table is not limited to the provision of the meshing ridges on the rotary table. When the rotary disk unit has the meshing ridges as described above, the rotary table is provided with the meshing grooves. It should be carried out.

Further, the present invention is not limited to the rotary powder compression molding machine as described above, and the rotary disk unit can be attached and detached with the movement or disassembly of the upper frame in the main body frame.
The driving force receiving body has a centering hole and an engaging groove portion or an engaging convex portion, and can be applied to a case where the rotary disk unit is detached and washed outside the main body frame.

In the present invention, a brush which is moved up and down by a lifting mechanism similar to the mechanism for moving the cleaning nozzle up and down is provided in the apparatus frame at a position displaced from the cleaning nozzle, and the cleaning liquid sprayed at the high pressure by the brush. The cleaning effect may be improved by rubbing the inner surfaces of the upper and lower punch mounting holes cleaned by. When the brush is also used in this way, the brush can be mounted at least at a position above the injection hole in the cleaning nozzle.

[0134]

As described in detail above, according to the rotary disk unit cleaning device of the rotary powder compression molding machine according to the present invention, the rotary table and the driving force receiving body of the rotary disk unit are fitted together without rattling. Position the rotary disk unit with respect to the rotary table in the radial direction orthogonal to the direction in which the engaging groove or the engaging ridge provided on the rotary table extends, and the centering head of the rotary table and the centering of the driving force receiving body By mating with the holes, the rotary disk unit is positioned with respect to the rotary table in the direction in which the meshing groove or the meshing convex stripe extends, and the rotary loci of the mounting holes formed in the rotary disk unit are moved up and down. Since it can be accurately positioned with respect to the cleaning nozzle, the cleaning nozzle moved up and down by the nozzle drive means does not hit the rotating disk. Reliably through the respective mounting holes drilled in the rotating disc, by spraying cleaning liquid jetted at high pressure from the injection hole of the cleaning nozzle to the inner surface of the mounting holes can be cleaned turntable unit. Also, by using this cleaning device, it is possible to remove the rotary disk unit from the rotary powder compression molding machine and clean it externally, so that it is not necessary to take strong waterproof and rust preventive measures for the rotary powder compression molding machine. Or if you need it, you can do it lightly. Moreover, by removing the rotary disk unit, external setup can be performed, which is useful for improving the operating rate of the rotary powder compression molding machine.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing the configuration of a main part of a rotary tableting machine.

[Fig. 2] Fig. 2 is a block diagram of a main part of the rotary tableting machine, in which the rotary platen is replaced with a rotary platen in order to take out the rotary platen unit.
Sectional drawing which shows roughly in the state rotated by 0 degree.

FIG. 3 is a cross-sectional view showing a main part of the rotary tableting machine with its turntable unit pulled out.

FIG. 4 is an exploded perspective view showing a configuration of a dog clutch of the rotary tableting machine.

5 is a sectional view taken along line ZZ in FIG.

FIG. 6 is a cross-sectional view schematically showing a configuration of a main part of a cleaning device for cleaning a rotary disk unit of the rotary tableting machine according to the first embodiment of the present invention.

FIG. 7 is a cross-sectional view schematically showing a state in which a main part of the cleaning device according to the first embodiment and a turntable unit that is inserted into and removed from the main part are separated.

FIG. 8 is an exploded perspective view showing a rotary table of the cleaning apparatus according to the first embodiment and a driving force receiving body of a rotary disk unit meshingly engaged with the rotary table.

FIG. 9 is a cross-sectional view schematically showing the device built in the lower frame of the cleaning apparatus according to the first embodiment.

FIG. 10 is a cross-sectional view showing the configuration of a cleaning mechanism portion of the cleaning device according to the first embodiment.

FIG. 11 is a cross-sectional view showing the relationship between the cleaning mechanism section of the cleaning apparatus according to the first embodiment and a part of the rotating disk.

FIG. 12 is a cross-sectional view showing a state where the cleaning liquid is sprayed from the cleaning nozzle of the cleaning apparatus according to the first embodiment.

FIG. 13 is a diagram showing the positional relationship between the cleaning nozzle, the reference position detection target portion, and the rotating disk unit of the cleaning apparatus according to the first embodiment, as viewed from the lower surface side of the rotating disk unit.

FIG. 14 is a cross-sectional view schematically showing the configuration of a main part of a cleaning device for cleaning a rotary disk unit of a rotary tableting machine according to a second embodiment of the present invention.

FIG. 15 is a cross-sectional view schematically showing a configuration of a main part of a cleaning device according to a third embodiment of the present invention for cleaning a rotary disk unit of a rotary tableting machine.

[Explanation of symbols]

 A ... Rotary tableting machine (rotary powder compression molding machine), 21 ... Main body frame, 130 ... Main shaft, 135 ... Driving force transmitting body, 178 ... Engaging groove, 137 ... Centering hole, 161 ... Rotating disk unit, 162 ... Rotating disc, 164 ... Driving force receiving body, B ... Rotating disc unit cleaning device, 321 ... Device frame, 321a ... Washing chamber, 324 ... Opening door, 330 ... Spindle (table driving means), 332 ... Driven gear (table driving) Means), 333 ... drive gear (table drive means), 335 ... rotary table, 336 ... meshing ridges, 403 ... motor (table drive means), 407 ... centering head, 413 ... rotary encoder (table drive means), 414 ... Rotation angle control section (table driving means), 416 ... Motor driver (table driving means), 427 Washing nozzle, 430 ... injection holes 434 ... air cylinder (nozzle drive means), 441 ... discharge port.

Claims (1)

(57) [Claims] 1. A rotary type powder compression molding machine is detachably attached to a main body frame, and a driving force transmission body provided at an upper end of a main shaft of the molding machine in a state of being set in the main body frame. A turntable having a plurality of dies, an upper punch, and a lower punch each detachably attached to the turntable unit that is rotated by a turning force given by a turning force; and a driving force receiving body provided below the turntable, A centering hole formed along the thickness direction in the central portion of the receiving body and tapering toward the upper side, and a centering hole formed in the driving force receiving body and formed in the radial direction of the receiving body or parallel to this direction. At least one tapered engagement groove portion that extends and is open at the end in the extension direction,
Alternatively, it has a configuration similar to that of this groove portion, and is provided with at least one tapered meshing convex portion that is fitted in the meshing groove portion provided in the driving force transmission body so as to be able to be taken in and out along the longitudinal direction thereof. In the cleaning device for cleaning the rotary disk unit by removing it from the main body frame, an apparatus frame having a cleaning chamber to which an opening / closing door is attached and in which the rotary disk unit is taken in and out under the opening of the door, A drainage port provided at the bottom of the cleaning chamber; a rotary table located above the drainage port and rotatably provided in the cleaning chamber and on which the turntable unit is detachably mounted; Table driving means for intermittently rotating the rotary table at the same angle as the arrangement pitch of the dies provided on the lower part of the rotary table, A tapered centering ridge or a tapered centering groove that is provided on the rotary table so as to extend in the radial direction thereof and is fitted in the meshing groove or the meshing convex of the rotary disk unit mounted on the rotary table. A tapered centering head provided in the center of the rotary table and fitted in the centering hole of the rotary disk unit; and a taper centering head located above the rotary disk unit housed in the cleaning chamber. A rod-shaped cleaning nozzle which is provided on the apparatus frame so as to be movable up and down and to which a cleaning liquid is supplied, and a vertical movement of the cleaning nozzle so that the die, the upper punch and the lower punch are respectively removed. Nozzle drive means that is removably inserted into the inside of the mounting hole, the upper punch mounting hole, and the lower punch mounting hole, and there is a circumferential interval on the outer peripheral surface of the cleaning nozzle. Provided, the cleaning nozzle is the mortar mounting hole, the upper punch mounting hole,
And a plurality of injection holes for injecting a cleaning liquid toward the inner surfaces of the lower punch attachment holes when these are inserted into the lower punch attachment holes, and a rotary disk unit cleaning device for a rotary powder compression molding machine.